CN104373368A - Draught fan rotating speed control method and device for refrigerator and refrigerator - Google Patents
Draught fan rotating speed control method and device for refrigerator and refrigerator Download PDFInfo
- Publication number
- CN104373368A CN104373368A CN201410636651.XA CN201410636651A CN104373368A CN 104373368 A CN104373368 A CN 104373368A CN 201410636651 A CN201410636651 A CN 201410636651A CN 104373368 A CN104373368 A CN 104373368A
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- China
- Prior art keywords
- blower fan
- refrigerator
- rotating speed
- speed
- fan
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/304—Spool rotational speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
Abstract
The invention provides a draught fan rotating speed control method for a refrigerator. The method includes the following steps of detecting the input voltage of a draught fan, obtaining the running rotating speed of the draught fan according to the input voltage, adjusting the running rotating speed of the draught fan according to the target rotating speed of the draught fan, and keeping the running rotating speed of the draught fan at the target rotating speed. According to the draught fan rotating speed control method for the refrigerator, the running rotating speed of the draught fan can be accurately adjusted, the running rotating speed of the draught fan is accurately and reliably kept close to the target rotating speed, the accurate control over the temperature of the refrigerator is achieved, and the performance of the refrigerator is improved. The invention further provides a draught fan rotating speed control device for the refrigerator and the refrigerator.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, particularly a kind of rotation speed of fan controlling method of refrigerator, device and refrigerator.
Background technique
At present, the refrigerator that some costs are higher, detects the rotating speed (cost of the blower fan of this band feedback is high) of blower fan by the Hall transducer be configured with for detecting DC fan, but, the cost of this detection architecture is higher, makes the cost of refrigerator higher, lacks the market competitiveness.
But, if can not get the running speed of blower fan, then lack the reference that rotation speed of fan is regulated, the fine adjustment of rotation speed of fan can not be accomplished well.But, the rotating speed of blower fan and cold number relevant, thus also just have impact on the stability that refrigerator temperature controls.
Summary of the invention
The present invention is intended at least one of solve the problems of the technologies described above.
For this reason, one object of the present invention is the rotation speed of fan controlling method proposing a kind of refrigerator.The method can realize the accurate control to rotation speed of fan simply and easily, promotes the performance of refrigerator.
Another object of the present invention is to the rotation speed of fan control gear proposing a kind of refrigerator.
Another object of the present invention is to propose a kind of refrigerator.
To achieve these goals, the embodiment of a first aspect of the present invention discloses a kind of rotation speed of fan controlling method of refrigerator, comprises the following steps: the input voltage detecting blower fan; The running speed of described blower fan is obtained according to described input voltage; And the running speed of described blower fan is adjusted according to the rotating speed of target of described blower fan, make the running speed of described blower fan maintain described rotating speed of target.
According to the rotation speed of fan controlling method of the refrigerator of the embodiment of the present invention, according to the feedback of the input voltage of blower fan, the running speed of blower fan can be obtained, thus can accurately adjust the running speed of blower fan, the running speed of blower fan is made accurately, reliably to maintain near rotating speed of target, realize the accurate control of the temperature of refrigerator, promote refrigerator performance.
In addition, the rotation speed of fan controlling method of refrigerator according to the above embodiment of the present invention can also have following additional technical characteristics:
Further, the described rotating speed of target according to described blower fan adjusts the running speed of described blower fan, makes the running speed of described blower fan maintain described rotating speed of target, comprises further: the rotating speed of target of more described blower fan and the running speed of described blower fan; If the difference between the running speed of the rotating speed of target of described blower fan and described blower fan is positioned at outside preset rotation speed margin of error, then control the running speed change preset rotation speed of described blower fan at interval of the scheduled time, until the difference between the running speed of the rotating speed of target of described blower fan and described blower fan is positioned within described preset rotation speed margin of error.
Further, the input voltage of described blower fan is obtained by voltage collection circuit.
The embodiment of second aspect present invention discloses a kind of rotation speed of fan control gear of refrigerator, comprising: drive circuit, and described drive circuit is connected with blower fan, to drive described fan operation; Voltage collection circuit, the test end of described voltage collection circuit is connected with the connecting line between described drive circuit and described blower fan, to detect the input voltage of described blower fan; Control chip, described control chip is connected with described voltage collection circuit with described drive circuit respectively, to obtain the running speed of described blower fan according to described input voltage, and adjusted the running speed of described blower fan by described drive circuit according to the rotating speed of target of described blower fan, make the running speed of described blower fan maintain described rotating speed of target.
According to the rotation speed of fan control gear of the refrigerator of the embodiment of the present invention, according to the input voltage of the blower fan that voltage collection circuit collects, the running speed of blower fan can be obtained, thus drive circuit can accurately adjust the running speed of blower fan, the running speed of blower fan is made accurately, reliably to maintain near rotating speed of target, realize the accurate control of the temperature of refrigerator, promote refrigerator performance.In addition, described control gear structure is simple, cost is low.
In addition, the rotation speed of fan control gear of refrigerator according to the above embodiment of the present invention can also have following additional technical characteristics:
Further, also comprise: analog to digital conversion circuit, analog-digital conversion circuit as described is between described voltage collection circuit and described control chip.
Further, also comprise: timer, described timer is connected with described control chip, and described timer is every after a predetermined time, and described control chip controls the collection that described voltage collection circuit carries out primary voltage.
Further, described drive circuit is PWM drive circuit.
Further, described control chip is single-chip microcomputer.
The embodiment of third aspect present invention discloses a kind of refrigerator, comprising: the rotation speed of fan control gear of refrigerator as above.This refrigerator can according to collection to the input voltage of blower fan obtain the running speed of blower fan, thus drive circuit can accurately adjust the running speed of blower fan, the running speed of blower fan is made accurately, reliably to maintain near rotating speed of target, realize the accurate control of the temperature of refrigerator, promote refrigerator performance.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the flow chart of the rotation speed of fan controlling method of refrigerator according to an embodiment of the invention;
Fig. 2 is the structured flowchart of the rotation speed of fan control gear of refrigerator according to an embodiment of the invention; With
Fig. 3 is the structured flowchart of the rotation speed of fan control gear of refrigerator in accordance with another embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
With reference to description below and accompanying drawing, these and other aspects of embodiments of the invention will be known.Describe at these and in accompanying drawing, specifically disclose some particular implementation in embodiments of the invention, representing some modes of the principle implementing embodiments of the invention, but should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise fall into attached claims spirit and intension within the scope of all changes, amendment and equivalent.
Below in conjunction with accompanying drawing, rotation speed of fan controlling method, device and the refrigerator according to the refrigerator of the embodiment of the present invention is described.
Fig. 1 is the flow chart of the rotation speed of fan controlling method of refrigerator according to an embodiment of the invention.As shown in Figure 1, the rotation speed of fan controlling method of refrigerator, comprises the steps: according to an embodiment of the invention
Step S101: the input voltage detecting blower fan.
The input voltage of blower fan such as adopts voltage collection circuit to obtain.Such as: the voltage collection circuit consisted of resistance and comparator gathers the input voltage of blower fan.The input voltage of blower fan refers to the voltage of the drive singal driving fan operation.
Step S102: the running speed obtaining blower fan according to input voltage.
The rotating speed of blower fan changes along with the difference of the input voltage of blower fan, therefore, can calculate the running speed of blower fan according to the input voltage of blower fan.Such as: by test mode using multiple different input voltage as input, the running speed of blower fan detected, form a table of comparisons by corresponding with input voltage for the running speed of blower fan and be stored in refrigerator, like this, after input voltage blower fan being detected, this table of comparisons can be called, find the running speed of the blower fan corresponding with this input voltage.
Step S103: according to the running speed of the rotating speed of target adjustment blower fan of blower fan, make the running speed of blower fan maintain rotating speed of target.
As a concrete example, comprising:
1, the rotating speed of target of blower fan and the running speed of blower fan is compared.
If the difference between the rotating speed of target of 2 blower fans and the running speed of blower fan is positioned at outside preset rotation speed margin of error, then control the running speed change preset rotation speed of blower fan at interval of the scheduled time, until the difference between the rotating speed of target of blower fan and the running speed of blower fan is positioned within preset rotation speed margin of error.In this example, suppose that the rotating speed of target of inner blower per minute and the running speed of blower fan differ within 20 turns, think that the difference between the rotating speed of target of blower fan and the running speed of blower fan is positioned within preset rotation speed margin of error, namely using one minute as standard, then preset rotation speed margin of error is but is not limited to [-20 turns, 20 turns].
Embodiment described above, if the difference between the running speed of blower fan and rotating speed of target is comparatively large, then by repeatedly adjusting, can maintain rotating speed of target to make the running speed of blower fan.Such as: rotating speed of target is 1200 revs/min, the input voltage of every 30 seconds detection primary air fans, each adjustment rotating speed 20 revs/min.If now actual speed is 1100 revs/min, by 5 adjustment, the running speed of blower fan is adjusted to differ with rotating speed of target be positioned at ± 20 revs/min within.Like this, under blower fan may operate at constant input voltage, run under making blower fan remain on rotating speed of target.
According to the rotation speed of fan controlling method of the refrigerator of the embodiment of the present invention, according to the feedback of the input voltage of blower fan, the running speed of blower fan can be obtained, thus can accurately adjust the running speed of blower fan, the running speed of blower fan is made accurately, reliably to maintain near rotating speed of target, realize the accurate control of the temperature of refrigerator, promote refrigerator performance.
Fig. 2 is the structured flowchart of the rotation speed of fan control gear of refrigerator according to an embodiment of the invention.As shown in Figure 2, the rotation speed of fan control gear 200 of refrigerator according to an embodiment of the invention, comprising: drive circuit 210, voltage collection circuit 220 and control chip 230.
Wherein, drive circuit 210 is connected with blower fan 240, runs to drive blower fan 240.The test end of voltage collection circuit 220 is connected with the connecting line between drive circuit 210 and blower fan 240, to detect the input voltage of blower fan 240.Control chip 230 is connected with voltage collection circuit 220 with drive circuit 210 respectively, to obtain the running speed of blower fan 240 according to input voltage, and adjusted the running speed of blower fan 240 by drive circuit 210 according to the rotating speed of target of blower fan 240, make the running speed of blower fan 240 maintain rotating speed of target.Wherein, drive circuit 210 is such as pulse-width modulation PWM drive circuit.
Specifically, voltage collection circuit 220 is such as the voltage collection circuit 220 be made up of resistance and comparator.The input voltage of blower fan 240 refers to the voltage of the drive singal driving blower fan 240 to run.The rotating speed of blower fan 240 changes along with the difference of the input voltage of blower fan 240, therefore, can calculate the running speed of blower fan 240 according to the input voltage of blower fan 240.Such as: by test mode using multiple different input voltage as input, the running speed of blower fan 240 detected, form a table of comparisons by corresponding with input voltage for the running speed of blower fan 240 and be stored in control chip 230, like this, after input voltage blower fan 240 being detected, control chip 230 can call this table of comparisons, finds the running speed of the blower fan 240 corresponding with this input voltage.
In one embodiment of the invention, control chip 230 is such as single-chip microcomputer, has safe and reliable and that cost is low advantage.
In one embodiment of the invention, control chip 230 such as controls the running speed of blower fan 240 in the following way.Specifically:
1, the rotating speed of target of blower fan 240 and the running speed of blower fan 240 is compared.
If the difference between the rotating speed of target of 2 blower fans 240 and the running speed of blower fan 240 is positioned at outside preset rotation speed margin of error, then control the running speed change preset rotation speed of blower fan 240 at interval of the scheduled time, until the difference between the running speed of the rotating speed of target of blower fan 240 and blower fan 240 is positioned within preset rotation speed margin of error.In this example, suppose that the rotating speed of target of inner blower 240 per minute and the running speed of blower fan 240 differ within 20 turns, think that the difference between the rotating speed of target of blower fan 240 and the running speed of blower fan 240 is positioned within preset rotation speed margin of error, namely using one minute as standard, then preset rotation speed margin of error is but is not limited to [-20 turns, 20 turns].
Embodiment described above, if the difference between the running speed of blower fan 240 and rotating speed of target is comparatively large, then by repeatedly adjusting, can maintain rotating speed of target to make the running speed of blower fan 240.Such as: rotating speed of target is 1200 revs/min, the input voltage of every 30 seconds detection primary air fans, each adjustment rotating speed 20 revs/min.If now actual speed is 1100 revs/min, by 5 adjustment, the running speed of blower fan 240 is adjusted to differ with rotating speed of target be positioned at ± 20 revs/min within.Like this, under blower fan 240 may operate at constant input voltage, run under making blower fan 240 remain on rotating speed of target.
As shown in Figure 3, the rotation speed of fan control gear 200 of the refrigerator of the embodiment of the present invention also comprises: analog to digital conversion circuit 250 (such as A/D converter), analog to digital conversion circuit 250 is between voltage collection circuit 220 and control chip 230.Namely analog to digital conversion circuit 250 is processed by control chip 230 after the analogue signal that voltage collection circuit 220 collects can being converted to digital signal.Thus the input voltage facilitating control chip 230 to use voltage collection circuit 220 to collect.
Shown in composition graphs 3, the rotation speed of fan control gear 200 of the refrigerator of the embodiment of the present invention also comprises: timer 260, timer 260 is connected with control chip 230, timer 260 is every after a predetermined time (as 30 seconds), and control chip 230 control voltage Acquisition Circuit 220 carries out the collection of primary voltage.Such as: rotating speed of target is 1200 revs/min, the input voltage of every 30 seconds detection primary air fans, each adjustment rotating speed 20 revs/min.If now actual speed is 1100 revs/min, by 5 adjustment, the running speed of blower fan 240 is adjusted to differ with rotating speed of target be positioned at ± 20 revs/min within.Like this, under blower fan 240 may operate at constant input voltage, run under making blower fan 240 remain on rotating speed of target.
According to the rotation speed of fan control gear of the refrigerator of the embodiment of the present invention, according to the input voltage of the blower fan that voltage collection circuit collects, the running speed of blower fan can be obtained, thus drive circuit can accurately adjust the running speed of blower fan, the running speed of blower fan is made accurately, reliably to maintain near rotating speed of target, realize the accurate control of the temperature of refrigerator, promote refrigerator performance.In addition, described control gear structure is simple, cost is low.
Embodiments of the invention disclose a kind of refrigerator, comprising: the rotation speed of fan control gear of the refrigerator as described in above-described embodiment.This refrigerator can according to collection to the input voltage of blower fan obtain the running speed of blower fan, thus drive circuit can accurately adjust the running speed of blower fan, the running speed of blower fan is made accurately, reliably to maintain near rotating speed of target, realize the accurate control of the temperature of refrigerator, promote refrigerator performance.
In addition, other formation of the refrigerator of the embodiment of the present invention and effect are all known for a person skilled in the art, in order to reduce redundancy, do not repeat.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalency thereof.
Claims (9)
1. a rotation speed of fan controlling method for refrigerator, is characterized in that, comprise the following steps:
Detect the input voltage of blower fan;
The running speed of described blower fan is obtained according to described input voltage; And
Adjust the running speed of described blower fan according to the rotating speed of target of described blower fan, make the running speed of described blower fan maintain described rotating speed of target.
2. the rotation speed of fan controlling method of refrigerator according to claim 1, is characterized in that, the described rotating speed of target according to described blower fan adjusts the running speed of described blower fan, makes the running speed of described blower fan maintain described rotating speed of target, comprises further:
The rotating speed of target of more described blower fan and the running speed of described blower fan;
If the difference between the running speed of the rotating speed of target of described blower fan and described blower fan is positioned at outside preset rotation speed margin of error, then control the running speed change preset rotation speed of described blower fan at interval of the scheduled time, until the difference between the running speed of the rotating speed of target of described blower fan and described blower fan is positioned within described preset rotation speed margin of error.
3. the rotation speed of fan controlling method of refrigerator according to claim 1, is characterized in that, the input voltage of described blower fan is obtained by voltage collection circuit.
4. a rotation speed of fan control gear for refrigerator, is characterized in that, comprising:
Drive circuit, described drive circuit is connected with blower fan, to drive described fan operation;
Voltage collection circuit, the test end of described voltage collection circuit is connected with the connecting line between described drive circuit and described blower fan, to detect the input voltage of described blower fan;
Control chip, described control chip is connected with described voltage collection circuit with described drive circuit respectively, to obtain the running speed of described blower fan according to described input voltage, and adjusted the running speed of described blower fan by described drive circuit according to the rotating speed of target of described blower fan, make the running speed of described blower fan maintain described rotating speed of target.
5. the rotation speed of fan control gear of refrigerator according to claim 4, is characterized in that, also comprise: analog to digital conversion circuit, and analog-digital conversion circuit as described is between described voltage collection circuit and described control chip.
6. the rotation speed of fan control gear of refrigerator according to claim 4, it is characterized in that, also comprise: timer, described timer is connected with described control chip, described timer is every after a predetermined time, and described control chip controls the collection that described voltage collection circuit carries out primary voltage.
7. the rotation speed of fan control gear of the refrigerator according to any one of claim 4-6, is characterized in that, described drive circuit is PWM drive circuit.
8. the rotation speed of fan control gear of the refrigerator according to any one of claim 4-6, is characterized in that, described control chip is single-chip microcomputer.
9. a refrigerator, is characterized in that, comprising: the rotation speed of fan control gear of the refrigerator as described in any one of claim 4-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410636651.XA CN104373368B (en) | 2014-11-12 | 2014-11-12 | Draught fan rotating speed control method and device for refrigerator and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410636651.XA CN104373368B (en) | 2014-11-12 | 2014-11-12 | Draught fan rotating speed control method and device for refrigerator and refrigerator |
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| Publication Number | Publication Date |
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| CN104373368A true CN104373368A (en) | 2015-02-25 |
| CN104373368B CN104373368B (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410636651.XA Active CN104373368B (en) | 2014-11-12 | 2014-11-12 | Draught fan rotating speed control method and device for refrigerator and refrigerator |
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Cited By (4)
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| CN104729193A (en) * | 2015-03-31 | 2015-06-24 | 海信容声(广东)冰箱有限公司 | Method and device for controlling fan in air-cooled refrigerator to work at steady speed |
| CN105020858A (en) * | 2015-07-31 | 2015-11-04 | 广东美的暖通设备有限公司 | Air conditioner and method and device for stepless speed regulation of indoor direct current fan in air conditioner |
| CN107084147A (en) * | 2017-06-05 | 2017-08-22 | 广东美的暖通设备有限公司 | Blower fan guard method, blower fan protection system and blower fan |
| CN112032916A (en) * | 2020-08-24 | 2020-12-04 | 珠海格力电器股份有限公司 | Motor control system and air conditioner |
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| CN104373368B (en) | 2017-05-24 |
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