CN112856842A - Control method of water chiller and water chiller - Google Patents
Control method of water chiller and water chiller Download PDFInfo
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- CN112856842A CN112856842A CN202110100047.5A CN202110100047A CN112856842A CN 112856842 A CN112856842 A CN 112856842A CN 202110100047 A CN202110100047 A CN 202110100047A CN 112856842 A CN112856842 A CN 112856842A
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- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
- F25B1/047—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of screw type
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- 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
- F25D15/00—Devices not covered by group F25D11/00 or F25D13/00, e.g. non-self-contained movable devices
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- 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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
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- 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
- F25D29/005—Mounting of control devices
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method of a water chiller and the water chiller, wherein the control method comprises the following steps: the method comprises the following steps that a fan of the water chiller runs for a first preset time according to preset frequency, a detection module detects the ambient temperature and obtains a first detection value every second preset time within the first preset time, and the detection module detects the condensation temperature and obtains a second detection value every second preset time within the first preset time; the calculation module obtains the condensation end temperature difference delta T in a second preset time interval according to the first detection value and the second detection value, the calculation module determines the adjusting frequency according to the condensation end temperature difference delta T and the preset temperature difference T, and the adjusting module adjusts the running frequency of the fan according to the adjusting frequency. The invention solves the problem that the fan has poor adaptability to different environmental temperatures due to the fact that the change of the environmental temperature cannot be considered in the adjusting mode of the fan of the water chiller in the prior art.
Description
Technical Field
The invention relates to the technical field of water chilling units, in particular to a control method of a water chiller and the water chiller.
Background
In the prior art, most of the adjusting modes of the variable frequency fans of the air-cooled screw water chilling units generally adjust the operating frequency of the fans according to the deviation of the condensing pressure, the target value of the condensing pressure is preset by the adjusting modes, the adjusting value is calculated according to the deviation between the detected actual condensing pressure and the target value of the condensing pressure, and the operating frequency of the fans is adjusted according to the adjusting value. However, the above adjusting method cannot take into account the change of the ambient temperature, which results in poor adaptability of the fan to different ambient temperatures.
Disclosure of Invention
The invention mainly aims to provide a control method of a water chiller and the water chiller, and aims to solve the problem that the fan has poor adaptability to different environmental temperatures due to the fact that the change of the environmental temperature cannot be considered in the adjustment mode of the fan of the water chiller in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a control method of a water chiller, the control method including the steps of: the method comprises the following steps that a fan of the water chiller runs for a first preset time according to preset frequency, a detection module detects the ambient temperature and obtains a first detection value every second preset time within the first preset time, and the detection module detects the condensation temperature and obtains a second detection value every second preset time within the first preset time; the calculation module obtains the condensation end temperature difference delta T in a second preset time interval according to the first detection value and the second detection value, the calculation module determines the adjusting frequency according to the condensation end temperature difference delta T and the preset temperature difference T, and the adjusting module adjusts the running frequency of the fan according to the adjusting frequency.
Further, the control method further comprises the following steps: the calculation module calculates and acquires a condensation end temperature difference delta T every second preset time within a first preset time, the calculation module periodically acquires a plurality of condensation end temperature differences delta T within the first preset time, the calculation module calculates according to the plurality of condensation end temperature differences delta T to acquire an average condensation end temperature difference delta T ', the comparison module compares the average condensation end temperature difference delta T' with the preset temperature differences T to acquire first comparison information, and the calculation module determines the adjusting frequency according to the first comparison information.
Further, the adjustment frequency comprises a first adjustment frequency K1When DeltaT' > T +1, the first adjustment frequency K1Obtained by the following formula: k1＝k1xDeltaT' - (T +1) |, the adjusting module adjusting the frequency K according to a first adjusting frequency1Increasing the running frequency of the fan by a first adjusting frequency K1Wherein k is1Is a first adjustment factor.
Further, the adjustment frequency comprises a second adjustment frequency K2When the delta T' is less than or equal to T-1, the second adjusting frequency K2Obtained by the following formula: k2＝k2xDeltaT' - (T-1) |, the adjusting module adjusting the frequency K according to a second adjusting frequency2Reducing the operating frequency of the fan by a second regulation frequency K2Wherein k is2Is the second adjustment factor.
Further, the adjustment frequency comprises a third adjustment frequency K3When T-1 is less than delta T' ≦ T +1, K30, the regulating module regulates the frequency K according to the third regulation frequency3And controlling the running frequency of the fan to be kept unchanged.
Further, the control method for the fan of the water chiller to run for the first preset time according to the preset frequency further comprises the following steps: the detection module detects the environment temperature and obtains an initial environment temperature value T0The comparison module compares the initial environment temperature value T0And presetting a temperature value and acquiring second comparison information, and outputting a preset frequency by the output module according to the second comparison information.
Further, the preset temperature value comprises a first preset temperature value T1The predetermined frequency includes a first predetermined frequency A when T0＞T1And when the fan is started according to the first preset frequency A.
Further, the preset temperature value also comprises a second preset temperature value T2And a second preset temperature value T2Less than a first preset temperature value T1The preset frequency also comprises a second preset frequency B when T is0≤T2The fan is driven according to a second preset frequency BAnd (5) starting.
Further, when T is2＜T0≤T1And when the fan is in a standby state.
According to another aspect of the invention, the water chiller is provided, and comprises a detection module, a calculation module and an adjustment module, wherein the detection module is used for detecting the ambient temperature and acquiring a first detection value every second preset time within a first preset time, and the detection module is used for detecting the condensation temperature and acquiring a second detection value every second preset time within the first preset time; the calculation module is used for acquiring a condensation end temperature difference delta T within a second preset time interval according to the first detection value and the second detection value, and determining the adjusting frequency according to the condensation end temperature difference delta T and the preset temperature difference T; the adjusting module is used for adjusting the operating frequency of the fan according to the adjusting frequency.
By applying the technical scheme of the invention, the detection module detects the ambient temperature and obtains a first detection value every second preset time within a first preset time, the detection module detects the condensation temperature and obtains a second detection value every second preset time within the first preset time, meanwhile, the calculation module calculates and obtains the condensation end temperature difference Delta T of the condensation end within the second preset time according to the first detection value and the second detection value within the same second preset time interval, and the calculation module determines the adjusting frequency according to the condensation end temperature difference Delta T and the preset temperature difference T, so that the adjusting module adjusts the operating frequency of the fan according to the adjusting frequency, the fan can be ensured to take into account the change of the ambient temperature, and the adaptability of the fan to different ambient temperatures is further improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a flow diagram of a control method of a water chiller according to an alternative embodiment of the invention;
fig. 2 shows a schematic view of a control method of the water chiller of fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a control method of a water chiller and the water chiller, and aims to solve the problem that the fan has poor adaptability to different environmental temperatures due to the fact that the change of the environmental temperature cannot be considered in the adjusting mode of the fan of the water chiller in the prior art.
It should be noted that, in the present application, the water chiller is the water chiller described above and below, and the water chiller includes a detection module, a calculation module, and an adjustment module, where the detection module is configured to detect the ambient temperature and obtain a first detection value at every second preset time within a first preset time, and the detection module detects the condensation temperature and obtains a second detection value at every second preset time within the first preset time; the calculation module is used for acquiring a condensation end temperature difference delta T within a second preset time interval according to the first detection value and the second detection value, and determining the adjusting frequency according to the condensation end temperature difference delta T and the preset temperature difference T; the adjusting module is used for adjusting the operating frequency of the fan according to the adjusting frequency.
As shown in fig. 1 and 2, the control method of the water chiller includes the steps of: the method comprises the following steps that a fan of the water chiller runs for a first preset time according to preset frequency, a detection module detects the ambient temperature and obtains a first detection value every second preset time within the first preset time, and the detection module detects the condensation temperature and obtains a second detection value every second preset time within the first preset time; the calculation module obtains the condensation end temperature difference delta T in a second preset time interval according to the first detection value and the second detection value, the calculation module determines the adjusting frequency according to the condensation end temperature difference delta T and the preset temperature difference T, and the adjusting module adjusts the running frequency of the fan according to the adjusting frequency.
The detection module detects the ambient temperature and obtains a first detection value at every second preset time within a first preset time, the detection module detects the condensation temperature and obtains a second detection value at every second preset time within the first preset time, meanwhile, the calculation module calculates and obtains the condensation end temperature difference delta T of the condensation end within the second preset time according to the first detection value and the second detection value within the same second preset time interval, and the calculation module determines the adjusting frequency according to the condensation end temperature difference delta T and the preset temperature difference T, so that the adjusting module adjusts the operating frequency of the fan according to the adjusting frequency, the fan is ensured to be capable of considering the change of the ambient temperature, and the adaptability of the fan to different ambient temperatures is further improved.
Optionally, the first preset time is 60 seconds, the second preset time is 5 seconds, the fan operates at a preset frequency for 60 seconds, the ambient temperature and the condensation temperature are detected every 5 seconds, a condensation end temperature difference Δ T is calculated and recorded according to the ambient temperature and the condensation temperature, in addition, the condensation end temperature difference Δ T is a value obtained by subtracting the ambient temperature from the condensation temperature, the condensation temperature is a saturation temperature corresponding to the condensation pressure, the detection module includes a temperature sensor and a pressure sensor, the temperature sensor is used for detecting the ambient temperature, the pressure sensor is used for detecting the condensation pressure, and the condensation pressure is directly detected by the pressure sensor.
Alternatively, the preset temperature difference T is 15 ℃.
As shown in fig. 1 and 2, the control method further includes the steps of: the calculation module calculates and acquires a condensation end temperature difference delta T every second preset time within a first preset time, the calculation module periodically acquires a plurality of condensation end temperature differences delta T within the first preset time, the calculation module calculates according to the plurality of condensation end temperature differences delta T to acquire an average condensation end temperature difference delta T ', the comparison module compares the average condensation end temperature difference delta T' with the preset temperature differences T to acquire first comparison information, and the calculation module determines the adjusting frequency according to the first comparison information. Therefore, the calculation module determines the adjusting frequency according to the average condensing end temperature difference delta T 'and the preset temperature difference T by calculating the average condensing end temperature difference delta T' of the plurality of condensing end temperature differences delta T, and the adjusting module is ensured to adjust the operating frequency of the fan according to the adjusting frequency.
As shown in fig. 1 and 2, the adjustment frequency comprises a first adjustment frequency K1When DeltaT' > T +1, the first adjustment frequency K1Obtained by the following formula: k1＝k1xDeltaT' - (T +1) |, the adjusting module adjusting the frequency K according to a first adjusting frequency1Increasing the running frequency of the fan by a first adjusting frequency K1Wherein k is1Is a first adjustment factor. Therefore, the operating frequency of the fan can be timely adjusted along with the change of the environmental temperature, and the adaptability of the fan to different environmental temperatures is improved.
Optionally, the period of the calculation module periodically acquiring the multiple condensation end temperature differences Δ T is 10 seconds, that is, the multiple condensation end temperature differences Δ T in the previous 10 seconds are averaged, and when Δ T' > T +1, the operating frequency of the fan is increased by the first adjustment frequency K1And the fan keeps the current adjusted running frequency to run for 10 seconds, the condensing temperature and the environment temperature are detected every 5 seconds in the period, then the condensing end temperature difference delta T of the condensing end is calculated and recorded one by one, and after the 10 seconds are finished, the average condensing end temperature difference delta T' is calculated for a plurality of just recorded condensing end temperature differences delta T again.
As shown in fig. 1 and 2, the adjustment frequency comprises a second adjustment frequency K2When the delta T' is less than or equal to T-1, the second adjusting frequency K2Obtained by the following formula: k2＝k2xDeltaT' - (T-1) |, the adjusting module adjusting the frequency K according to a second adjusting frequency2Reducing the operating frequency of the fan by a second regulation frequency K2Wherein k is2Is the second adjustment factor. Therefore, the operating frequency of the fan can be timely adjusted along with the change of the environmental temperature, and the adaptability of the fan to different environmental temperatures is improved。
It should be noted that, in the present application, when the ambient temperature is greater than 35 ℃, the ambient temperature is calculated by substituting 35 ℃ for the ambient temperature in the process of calculating the condensation end temperature difference Δ T of the condensation end, that is, "Δ T ═ condensation temperature-35 ℃" instead of "Δ T ═ condensation temperature — ambient temperature"; when the ambient temperature is less than or equal to 15 ℃, replacing the delta T with the condensation temperature-15 ℃.
Optionally, a first adjustment factor k1And a second adjustment coefficient k2Are all 2.
As shown in fig. 1 and 2, the adjustment frequency includes a third adjustment frequency K3When T-1 is less than delta T' ≦ T +1, K30, the regulating module regulates the frequency K according to the third regulation frequency3And controlling the running frequency of the fan to be kept unchanged. Therefore, when the operating frequency of the fan is matched with the ambient temperature, the operating frequency of the fan is not adjusted, and the energy saving performance of the air conditioner is ensured.
As shown in fig. 1 and 2, the control method for operating the fan of the water chiller for a first preset time according to a preset frequency further includes the following steps: the detection module detects the environment temperature and obtains an initial environment temperature value T0The comparison module compares the initial environment temperature value T0And presetting a temperature value and acquiring second comparison information, and outputting a preset frequency by the output module according to the second comparison information. Therefore, the fan can output corresponding starting and operating frequency according to the ambient temperature, and the energy conservation of the air conditioner is facilitated.
Optionally, the water chiller includes a temperature sensor for detecting ambient temperature.
As shown in fig. 2, the preset temperature values include a first preset temperature value T1The predetermined frequency includes a first predetermined frequency A when T0＞T1And when the fan is started according to the first preset frequency A. Therefore, the fan can output corresponding starting frequency according to different environmental temperatures.
Optionally, a first preset temperature value T1At 15 deg.C, the first predetermined frequency A is 25Hz, i.e., T0When the temperature is higher than 15 ℃, the fan is started according to the starting frequency of 25Hz and the water cooler is startedThe condenser of (a) performs a heat dissipation operation,
as shown in fig. 2, the preset temperature values further include a second preset temperature value T2And a second preset temperature value T2Less than a first preset temperature value T1The preset frequency also comprises a second preset frequency B when T is0≤T2And the fan is started according to a second preset frequency B. Therefore, the fan can output corresponding starting frequency according to different environmental temperatures.
Optionally, a second preset temperature value T2At 5 ℃ and a second predetermined frequency B of 10Hz, i.e. T0And when the temperature is less than or equal to 5 ℃, the fan is started according to the starting frequency of 10Hz and carries out heat dissipation operation on the condenser of the water chiller.
When T is shown in FIG. 22＜T0≤T1And when the fan is in a standby state. Thus, i.e. 5 ℃ < T0When the temperature is less than or equal to 15 ℃, the condenser does not need to dissipate heat.
Optionally, when the water chiller is stopped and the compressor is turned off, the fan is turned off after a delay of 30 seconds, and finally the output frequency of the fan is 0.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A control method of a water chiller is characterized by comprising the following steps:
the method comprises the following steps that a fan of the water chiller runs for a first preset time according to a preset frequency, a detection module detects the ambient temperature and obtains a first detection value at intervals of a second preset time within the first preset time, and the detection module detects the condensation temperature and obtains a second detection value at intervals of the second preset time within the first preset time;
the calculation module acquires a condensation end temperature difference delta T in the second preset time interval according to the first detection value and the second detection value, the calculation module determines an adjusting frequency according to the condensation end temperature difference delta T and a preset temperature difference T, and the adjusting module adjusts the running frequency of the fan according to the adjusting frequency.
2. The control method according to claim 1, characterized by further comprising the steps of:
the calculation module calculates and acquires one condensation end temperature difference delta T every second preset time within the first preset time, the calculation module periodically acquires a plurality of condensation end temperature differences delta T within the first preset time, the calculation module calculates according to the plurality of condensation end temperature differences delta T to acquire an average condensation end temperature difference delta T ', the comparison module compares the average condensation end temperature difference delta T' with the preset temperature difference T to acquire first comparison information, and the calculation module determines the adjusting frequency according to the first comparison information.
3. Control method according to claim 2, characterized in that the regulation frequency comprises a first regulation frequency K1When DeltaT' > T +1, the first regulation frequency K1Obtained by the following formula: k1＝k1xDeltaT' - (T +1) |, the adjusting module adjusts the frequency K according to the first adjusting frequency1Increasing the operating frequency of the fan by the first regulation frequency K1Wherein k is1Is a first adjustment factor.
4. Control method according to claim 2, characterized in that the regulation frequency comprises a second regulation frequency K2When DeltaT' is less than or equal to T-1, the second adjustment frequency K2Obtained by the following formula: k2＝k2xDeltaT' - (T-1) |, the adjusting module adjusts the frequency K according to the second2Reducing the operating frequency of the fan by the second regulation frequency K2Wherein k is2Is the second adjustment factor.
5. Control method according to claim 2, characterized in that the regulation frequency comprises a third regulation frequency K3When T-1 is less than delta T' ≦ T +1, K30, the regulation module regulates the frequency K according to the third regulation frequency3And controlling the running frequency of the fan to be kept unchanged.
6. The control method of claim 1, wherein the control method of the fan of the water chiller operating at a preset frequency for a first preset time further comprises the steps of:
the detection module detects the ambient temperature and obtains an initial ambient temperature value T0The comparison module compares the initial environment temperature value T0And presetting a temperature value and acquiring second comparison information, and outputting the preset frequency by an output module according to the second comparison information.
7. Control method according to claim 6, characterized in that said preset temperature value comprises a first preset temperature value T1The preset frequency comprises a first preset frequency A when T0＞T1And when the fan is started according to the first preset frequency A.
8. The control method according to claim 7, wherein the preset temperature value further comprises a second preset temperature value T2And the second preset temperature value T2Is less than the first preset temperature value T1The preset frequency also comprises a second preset frequency B when T is0≤T2And then, the fan is started according to a second preset frequency B.
9. The control method of claim 8, wherein when T is2＜T0≤T1And when the fan is in a standby state.
10. A water chiller as claimed in any one of claims 1 to 9 comprising:
the detection module is used for detecting the ambient temperature and acquiring a first detection value every second preset time within a first preset time, and detecting the condensation temperature and acquiring a second detection value every second preset time within the first preset time;
the calculation module is used for acquiring a condensation end temperature difference delta T within a second preset time interval according to the first detection value and the second detection value, and determining adjustment frequency according to the condensation end temperature difference delta T and a preset temperature difference T;
and the adjusting module is used for adjusting the running frequency of the fan according to the adjusting frequency.
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Cited By (1)
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| CN114063677A (en) * | 2021-11-19 | 2022-02-18 | 法特迪精密科技（苏州）有限公司 | Water temperature adjusting time optimization method for water chiller |
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| CN108826822A (en) * | 2018-06-15 | 2018-11-16 | 合肥美的电冰箱有限公司 | The control method and refrigerator of refrigerator |
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Application publication date: 20210528 |