Refrigeration equipment control method, device, system and refrigeration equipment

Abstract

The present application relates to a refrigeration equipment control method. After detecting that the refrigeration equipment has completed defrosting, the compressor of the refrigeration equipment is controlled to start running at a preset maximum compressor speed, and the fan of the refrigeration equipment is controlled to start running at a preset minimum fan speed, so as to realize pre-cooling of the evaporator. After the pre-cooling meets the preset pre-cooling cut-off condition, the compressor is controlled to run at a preset refrigeration compressor speed, and the fan is controlled to run at a preset refrigeration fan speed, so as to realize normal refrigeration operation. Before defrosting and starting refrigeration, pre-cooling is first performed to quickly reduce the air temperature and humidity of the space where the evaporator is located. Since the speed of the fan is extremely low, the humid and hot air in the space where the evaporator is located is prevented from flowing into the storage room in large quantities to a certain extent, reducing the impact of the humid and hot air blowing into the storage room on the items in the storage room, and ensuring that dry and cold air is finally delivered to the storage room when refrigeration is performed, effectively improving the storage effect of the items in the storage room of the refrigeration equipment.

Description

Technical Field

[0001] The present application relates to the field of refrigeration technology, and in particular to a refrigeration equipment control method, device, system and refrigeration equipment. Background Art

[0002] With the development of science and technology and the continuous improvement of people's living standards, refrigerators and other refrigeration equipment are increasingly used in people's daily lives, bringing great convenience to people's daily lives. During the use of refrigeration equipment, it is easy for frost to form due to frequent opening and closing of doors, which can easily increase the power consumption of refrigeration equipment. Therefore, refrigeration equipment is generally equipped with a defrost function.

[0003] However, when the refrigeration equipment is defrosted, it needs to be defrosted through heating treatment. This process will cause the temperature and humidity of the space where the evaporator of the refrigeration equipment is located to increase. When the refrigeration is turned on, it is easy to blow the hot and humid air in the space where the evaporator is located into the storage room, seriously affecting the storage effect of the items in the storage room. Summary of the invention

[0004] Based on this, it is necessary to provide a refrigeration equipment control method, device, system and refrigeration equipment to address the problem that after the refrigeration equipment is defrosted, hot and humid air is blown into the storage compartment, seriously affecting the storage effect of the items in the storage compartment.

[0005] A refrigeration equipment control method comprises: detecting whether an evaporator of the refrigeration equipment has completed defrosting; if the evaporator has completed defrosting, controlling the compressor of the refrigeration equipment to start running at a preset maximum compressor speed, and controlling the fan of the refrigeration equipment to start running at a preset minimum fan speed, so as to pre-cool the evaporator; if the pre-cooling meets a preset pre-cooling cut-off condition, controlling the compressor to run at a preset refrigeration compressor speed, and controlling the fan to run at a preset refrigeration fan speed.

[0006] The above refrigeration equipment control method, after detecting that the refrigeration equipment has completed defrosting, controls the compressor of the refrigeration equipment to start running at a preset maximum compressor speed, and controls the fan of the refrigeration equipment to start running at a preset minimum fan speed, so as to realize pre-cooling of the evaporator. After the pre-cooling meets the preset pre-cooling cut-off condition, the compressor is controlled to run at a preset refrigeration compressor speed, and the fan is controlled to run at a preset refrigeration fan speed, so as to realize normal refrigeration operation. In the above scheme, before defrosting and starting refrigeration, pre-cooling is first performed. During this process, the compressor delivers the refrigerant to the evaporator at the highest speed, so as to quickly reduce the air temperature and humidity of the space where the evaporator is located. In addition, since the speed of the fan is extremely low, it is possible to avoid a large amount of humid and hot air in the space where the evaporator is located from flowing into the storage room to a certain extent, reduce the impact of the humid and hot air blowing into the storage room on the items in the storage room, and ensure that dry and cold air is delivered to the storage room when refrigeration is finally performed, effectively improving the storage effect of the items in the storage room of the refrigeration equipment.

[0007] In one embodiment, before detecting whether the evaporator of the refrigeration equipment has completed defrosting, the method further includes: if it is detected that the evaporator of the refrigeration equipment starts to defrost, starting a timer to obtain a defrosting duration.

[0008] In one embodiment, if the evaporator completes defrosting, the compressor of the refrigeration equipment is controlled to start running at a preset maximum compressor speed, and the fan of the refrigeration equipment is controlled to start running at a preset minimum fan speed to pre-cool the evaporator, and it also includes: starting the timing to obtain the pre-cooling duration.

[0009] In one embodiment, the pre-cooling satisfies a preset pre-cooling cut-off condition, including: the pre-cooling time reaches a preset multiple of the cumulative defrost time, and the cumulative defrost time is the defrost time when the evaporator completes defrosting.

[0010] In one embodiment, the refrigeration equipment control method further includes: acquiring the evaporator temperature of the evaporator in real time.

[0011] In one embodiment, the pre-cooling satisfies a preset pre-cooling cut-off condition, including: the evaporator temperature satisfies a preset temperature condition.

[0012] In one embodiment, the evaporator temperature meeting a preset temperature condition includes: the evaporator temperature being less than or equal to a preset temperature threshold.

[0013] In one embodiment, the method for determining the preset temperature threshold includes: obtaining the initial evaporator temperature when the refrigeration equipment starts defrosting; analyzing according to the preset temperature parameters and the preset minimum storage temperature corresponding to the storage compartment to obtain a calculated temperature; and using the minimum value of the initial evaporator temperature and the calculated temperature as the preset temperature threshold.

[0014] A refrigeration equipment control device comprises: a defrost detection module, used for detecting whether the evaporator of the refrigeration equipment has completed defrosting; a pre-cooling module, used for controlling the compressor of the refrigeration equipment to start and run at a preset maximum compressor speed if the evaporator has completed defrosting, and controlling the fan of the refrigeration equipment to start and run at a preset minimum fan speed to pre-cool the evaporator; a refrigeration module, used for controlling the compressor to run at a preset refrigeration compressor speed if the pre-cooling meets a preset pre-cooling cut-off condition, and controlling the fan to run at a preset refrigeration fan speed.

[0015] A refrigeration equipment control system comprises an evaporator, a compressor, a controller and a fan, wherein the evaporator, the compressor and the fan are respectively connected to the controller, the compressor is connected to the evaporator, and the controller is used to perform refrigeration control according to any one of the refrigeration equipment control methods described above.

[0016] In one embodiment, the refrigeration equipment control system further includes a temperature detector, which is disposed on the evaporator and connected to the controller.

[0017] A refrigeration device comprises any one of the refrigeration device control systems described above.

[0018] In one embodiment, the refrigeration device is a refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a flow chart of a refrigeration equipment control method in one embodiment of the present application;

[0021] Figure 2 This is a flow chart of a refrigeration equipment control method in another embodiment of the present application;

[0022] Figure 3 This is a flow chart of a refrigeration equipment control method in another embodiment of the present application;

[0023] Figure 4 This is a schematic diagram of the structure of a refrigeration equipment control device in one embodiment of the present application;

[0024] Figure 5This is a schematic diagram of the structure of a refrigeration equipment control system in one embodiment of the present application;

[0025] Figure 6 This is a schematic diagram of the structure of a refrigeration equipment control system in another embodiment of the present application;

[0026] Figure 7 This is a schematic diagram of the structure of a refrigeration device in another embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0028] See also Figure 1 , a refrigeration equipment control method includes step 102, step 104 and step 106.

[0029] Step 102, detecting whether the evaporator of the refrigeration equipment has completed defrosting.

[0030] Specifically, refrigeration equipment is equipment that can realize the refrigeration function and provide a low-temperature, dry environment for storing items. The specific type of refrigeration equipment is not unique, and it can be a refrigerator, a freezer, etc., which is not specifically limited. During the operation of the refrigeration equipment, the evaporator condenses into frost on its surface due to the low temperature. Defrosting refers to removing the frost condensed on the evaporator. It should be pointed out that the implementation method of the defrosting operation is not unique. In a more detailed embodiment, the refrigeration equipment is provided with an electric heating device. When defrosting, the controller only needs to control the operation of the electric heating device to heat the evaporator to increase its temperature.

[0031] It is understandable that there is not only one way to detect whether the evaporator has completed defrosting. In one embodiment, an estimated defrosting time may be set for the evaporator. When the defrosting is turned on and the estimated defrosting time is reached, the defrosting is considered to be completed. In another embodiment, the evaporator temperature may be detected to further determine whether the evaporator has completed defrosting. The specific method is not limited and can be set according to actual needs.

[0032] Step 104, if the evaporator has completed defrosting, the compressor of the refrigeration equipment is controlled to start running at a preset maximum compressor speed, and the fan of the refrigeration equipment is controlled to start running at a preset minimum fan speed to pre-cool the evaporator.

[0033] Specifically, the preset maximum compressor speed is the preset maximum speed that the compressor of the current refrigeration device can reach during operation. The preset minimum fan speed is the preset minimum speed that the fan of the current refrigeration device can reach during operation.

[0034] If the controller detects that the evaporator has completed defrosting, the refrigeration equipment will be controlled to enter the pre-cooling operation state. In this operation state, the controller controls the compressor of the refrigeration equipment to start running at the preset maximum compressor speed, and controls the fan of the refrigeration equipment to start running at the preset minimum fan speed. Since the compressor runs at a high speed, the temperature of the evaporator can be quickly reduced, and the water molecules in the air in the space where the evaporator is located can also begin to condense, quickly reducing the air humidity, thereby obtaining dry and cold air. At the same time, the fan is turned on and the fan speed is set to the preset minimum fan speed to ensure that the low-speed fan cannot blow the airflow into the storage room of the refrigeration equipment. At this time, the fan speed is too low, the operation is not stable, but it will produce weak vibrations and extremely low wind speeds. The vibrations can help the residual water droplets on the evaporator to fall off, and the low wind flow will transport the hot and humid air in the space where the evaporator is located to the vicinity of the evaporator. Since the temperature of the evaporator drops rapidly to a low level, the water molecules in the gas disappear quickly through physical liquefaction or condensation, so that the air in the space where the evaporator of the refrigeration equipment is located returns to a cold and dry state, and the gas with low humidity will achieve a better effect of refrigerating and preserving food.

[0035] It should be noted that the preset maximum compressor speed and the preset minimum fan speed are not unique, and their specific sizes may vary depending on the actual model of the refrigeration equipment. For example, in a more specific embodiment, the preset maximum compressor speed may be set to 4000 rpm; the preset minimum fan speed may be set to any value between 100 rpm and 300 rpm, such as 200 rpm.

[0036] Step 106: If the pre-cooling meets the preset pre-cooling cut-off condition, the compressor is controlled to run at a preset refrigeration compressor speed, and the fan is controlled to run at a preset refrigeration fan speed.

[0037] Specifically, the preset refrigeration compressor speed is a preset speed corresponding to the compressor when the current refrigeration device is in normal refrigeration. The preset refrigeration fan speed is a preset speed corresponding to the fan when the current refrigeration device is in normal refrigeration.

[0038] After controlling the compressor and fan to start pre-cooling, the controller can also monitor the progress of pre-cooling in real time, and end the pre-cooling operation when the pre-cooling meets the preset pre-cooling cut-off condition. Correspondingly, at this time, the controller will control the compressor to switch from the preset maximum compressor speed to the preset cooling compressor speed, and control the fan to switch from the preset minimum fan speed to the preset cooling fan speed.

[0039] It should be noted that the preset refrigeration compressor speed is not unique. In combination with different actual compressor types, the corresponding preset refrigeration compressor speed may also be different. For example, in a more detailed embodiment, the preset refrigeration compressor speed may be set to 2000 rpm. Similarly, the preset refrigeration fan speed is not unique. In combination with different actual fan types, the corresponding preset refrigeration fan speed may also be different. For example, in a more detailed embodiment, the preset refrigeration fan speed may be set to 1200 rpm.

[0040] The above refrigeration equipment control method, after detecting that the refrigeration equipment has completed defrosting, controls the compressor of the refrigeration equipment to start running at a preset maximum compressor speed, and controls the fan of the refrigeration equipment to start running at a preset minimum fan speed, so as to realize pre-cooling of the evaporator. After the pre-cooling meets the preset pre-cooling cut-off condition, the compressor is controlled to run at a preset refrigeration compressor speed, and the fan is controlled to run at a preset refrigeration fan speed, so as to realize normal refrigeration operation. In the above scheme, before defrosting and starting refrigeration, pre-cooling is first performed. During this process, the compressor delivers the refrigerant to the evaporator at the highest speed, so as to quickly reduce the air temperature and humidity of the space where the evaporator is located. In addition, since the speed of the fan is extremely low, it is possible to avoid a large amount of humid and hot air in the space where the evaporator is located from flowing into the storage room to a certain extent, reduce the impact of the humid and hot air blowing into the storage room on the items in the storage room, and ensure that dry and cold air is delivered to the storage room when refrigeration is finally performed, effectively improving the storage effect of the items in the storage room of the refrigeration equipment.

[0041] See also Figure 2 In one embodiment, before step 102 , the method further includes step 202 .

[0042] Step 202: If it is detected that the evaporator of the refrigeration equipment starts to defrost, a timer is started to obtain a defrost duration.

[0043] Specifically, during the operation of the refrigeration equipment, the controller can monitor the operation of the refrigeration equipment in real time in combination with the operating status parameters of the refrigeration equipment. When the defrosting of the refrigeration equipment is detected, the timing is started to obtain the defrosting time, and finally after the defrosting is completed, the cumulative defrosting time is obtained. This solution counts the defrosting time, which makes it easier for the controller to know the operating status of the refrigeration equipment in a timely manner and realize the operation monitoring of the refrigeration equipment.

[0044] It should be noted that the method for detecting the start of defrosting of the evaporator is not unique. In one embodiment, when the controller sends an on instruction to the electric heating device for defrosting, it is considered that the defrosting starts.

[0045] It is understood that in one embodiment, the controller has a timing function, and the timing operation can be directly implemented by the controller. In another embodiment, an additional timer can be set in the refrigeration equipment, and the controller performs the corresponding timing function by controlling the timer to start. The specific method is not limited here.

[0046] See also Figure 3 In one embodiment, after step 104 , the method further includes step 302 .

[0047] Step 302, start timing to obtain the pre-cooling time.

[0048] Specifically, the pre-cooling duration is the duration of the controller controlling the compressor and the fan to start pre-cooling. In the solution of this embodiment, after the controller controls to start pre-cooling, it will also start timing to obtain the pre-cooling duration, so that the controller can timely know the operating status of the refrigeration equipment and realize the operation monitoring of the refrigeration equipment.

[0049] In one embodiment, the pre-cooling satisfies a preset pre-cooling cut-off condition, including: the pre-cooling time reaches a preset multiple of the cumulative defrost time, and the cumulative defrost time is the defrost time when the evaporator completes defrosting.

[0050] Specifically, the pre-cooling cut-off condition is not unique. In the solution of this embodiment, the duration of pre-cooling is used as the basis for judging whether the preset cut-off condition is met. When the pre-cooling time reaches the preset multiple of the cumulative defrosting time, it is considered that the pre-cooling cut-off condition is met, that is, the pre-cooling is completed. This solution realizes the pre-cooling cut-off detection by detecting whether the pre-cooling time reaches the preset multiple of the cumulative defrosting time, which has the advantages of simple detection method and high detection efficiency.

[0051] It should be noted that the size of the preset multiple is not unique, as long as it is less than the accumulated defrosting time. For example, in a more specific embodiment, the preset multiple can be set to 1 / 6. That is, when the controller starts pre-cooling and timing, the timing time reaches 1 / 6 times the accumulated defrosting time, and the pre-cooling operation is completed.

[0052] In one embodiment, the refrigeration equipment control method further includes: acquiring the evaporator temperature of the evaporator in real time.

[0053] Specifically, during the defrosting process, the evaporator needs to be heated for defrosting, which causes the temperature of the evaporator to rise sharply. When entering the pre-cooling state, the evaporator temperature drops rapidly due to the transmission of the refrigerant. Therefore, during the process of the evaporator being turned on and running, the controller can obtain the evaporator temperature of the evaporator in real time, so as to monitor the operating status of the evaporator according to the evaporator temperature.

[0054] It should be noted that the method for obtaining the evaporator temperature is not unique. In one embodiment, a temperature detector may be provided on the evaporator to detect the evaporator temperature in real time through the temperature monitor and send it to the controller.

[0055] In one embodiment, pre-cooling satisfies a preset pre-cooling cut-off condition, including: the evaporator temperature satisfies a preset temperature condition.

[0056] Specifically, in the solution of this embodiment, since the evaporator temperature will drop rapidly during pre-cooling, the evaporator temperature can be used as a basis for judging whether the pre-cooling meets the preset pre-cooling cut-off condition. When the controller analyzes the received evaporator temperature and obtains that the evaporator temperature meets the preset temperature condition, it is considered that the pre-cooling meets the preset pre-cooling cut-off condition, that is, the pre-cooling ends.

[0057] This solution uses the evaporator temperature as the basis for judging whether pre-cooling is terminated, combines the pre-cooling operation with the evaporator temperature, improves the accuracy of pre-cooling, and ensures the operational reliability of the refrigeration equipment.

[0058] In one embodiment, the evaporator temperature satisfies a preset temperature condition including: the evaporator temperature is less than or equal to a preset temperature threshold.

[0059] Specifically, the scheme of this embodiment, when analyzing whether pre-cooling is terminated in combination with the steam temperature, specifically compares and analyzes the evaporator temperature with the preset temperature threshold. Only when the evaporator temperature is less than or equal to the preset temperature threshold, is it considered that pre-cooling meets the pre-cooling termination condition.

[0060] It should be pointed out that the size of the preset temperature threshold is not unique. In a more detailed embodiment, the preset temperature threshold can be set directly in the controller in combination with the actual usage scenario. For example, the preset temperature threshold is set to minus 28 degrees Celsius (-28°C), etc., without specific limitation.

[0061] Furthermore, in one embodiment, the method for determining the preset temperature threshold includes: obtaining the initial evaporator temperature when the refrigeration equipment starts defrosting; analyzing according to the preset temperature parameters and the preset minimum storage temperature corresponding to the storage compartment to obtain the calculated temperature; and using the minimum value of the initial evaporator temperature and the calculated temperature as the preset temperature threshold.

[0062] Specifically, the initial evaporator temperature is the temperature data collected and sent by the temperature detector installed in the evaporator when the evaporator is turned on for defrosting. Before the evaporator starts to defrost, the evaporator is already in a frosted state, and the temperature of the storage compartment is controlled at this temperature state. At this time, the evaporator temperature is generally low and can meet the refrigeration demand. During the operation of the storage compartment of the refrigeration equipment, a preset minimum storage temperature and a preset maximum storage temperature are often set. The temperature of the storage compartment during operation is generally maintained between the preset minimum storage temperature and the preset maximum storage temperature to meet the storage demand of items.

[0063] In the solution of this embodiment, after the refrigeration device is turned on for defrosting, the initial evaporator temperature when the refrigeration device is just turned on for defrosting and the preset minimum storage temperature when the storage compartment is in refrigeration operation are obtained, and the calculated temperature is obtained by analyzing the preset temperature parameters, and finally the smaller value of the initial evaporator temperature and the calculated temperature is used as the preset temperature threshold and stored. When the refrigeration device enters the pre-cooling operation state, the obtained evaporator temperature is compared and analyzed with the preset temperature threshold, and the pre-cooling operation is terminated when the evaporator temperature is less than or equal to the preset temperature threshold.

[0064] It should be noted that the method of obtaining the calculated temperature by analyzing the preset temperature parameters and the preset minimum storage temperature corresponding to the storage compartment is not unique. In one embodiment, the calculated temperature may be obtained by subtracting the preset minimum storage temperature from the preset temperature parameters.

[0065] It is understandable that the preset temperature parameter and the preset minimum storage temperature are not unique, and they are different in combination with the actual refrigeration equipment. For example, in a more detailed embodiment, the preset temperature parameter can be set to 10°C, and the preset minimum storage temperature can be set to -18°C. Accordingly, in one embodiment, the calculated temperature is -18°C-10°C=-28°C. At this time, it is only necessary to compare the initial evaporator temperature with -28°C. If the initial evaporator temperature is greater than -28°C, -28°C is used as the preset temperature threshold.

[0066] In order to facilitate understanding of the technical solution of the present application, the present application is explained below in conjunction with more detailed embodiments.

[0067] First, the refrigeration equipment detects that the defrost conditions are met. At this time, the controller will control the refrigeration equipment to start defrosting. When the electric heating device is turned on for defrosting, the temperature detector is turned on to obtain the evaporator temperature in real time, and the evaporator temperature obtained at the moment of defrosting is used as the initial evaporator temperature and sent to the controller. At the same time, the controller starts timing to obtain the defrost duration.

[0068] If the defrost time reaches a certain value and the defrost end condition is met, the electric heater stops running, the defrost ends, and the controller obtains the accumulated defrost time. After that, the controller detects that the evaporator of the refrigeration equipment has completed defrosting, and will control the compressor to start running at the preset maximum compressor speed, and at the same time control the fan of the refrigeration equipment to start running at the preset minimum fan speed to pre-cool the evaporator. After the compressor and the fan start running, the controller starts timing, and compares and analyzes the pre-cooling time obtained by timing with the accumulated defrost time of the preset multiple (1 / 6) (for example, 30*1 / 6=5 minutes). When the pre-cooling time reaches 5 minutes, the pre-cooling end condition is met. At this time, the compressor is controlled to run at the preset refrigeration compressor speed, and the fan is controlled to run at the preset refrigeration fan speed, and the normal refrigeration mode is entered.

[0069] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0070] Based on the same inventive concept, the embodiment of the present application also provides a refrigeration equipment control device for implementing the refrigeration equipment control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more refrigeration equipment control device embodiments provided below can refer to the limitations of the refrigeration equipment control method above, and will not be repeated here.

[0071] See also Figure 4 , a refrigeration equipment control device includes a defrost detection module 402, a pre-cooling module 404 and a refrigeration module 406.

[0072] The defrost detection module 402 is used to detect whether the evaporator of the refrigeration equipment has completed defrosting; the pre-cooling module 404 is used to control the compressor of the refrigeration equipment to start and run at a preset maximum compressor speed if the evaporator has completed defrosting, and to control the fan of the refrigeration equipment to start and run at a preset minimum fan speed to pre-cool the evaporator; the refrigeration module 406 is used to control the compressor to run at a preset refrigeration compressor speed, and to control the fan to run at a preset refrigeration fan speed if the pre-cooling meets the preset pre-cooling cut-off condition.

[0073] In one embodiment, the defrost detection module 402 is further configured to start timing to obtain the defrost duration if it is detected that the evaporator of the refrigeration equipment starts to defrost.

[0074] In one embodiment, the pre-cooling module 404 is further used to start timing to obtain the pre-cooling duration.

[0075] In one embodiment, the refrigeration module 406 is further configured to obtain the evaporator temperature of the evaporator in real time.

[0076] Each module in the above refrigeration equipment control device can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0077] The above refrigeration equipment control device, after detecting that the refrigeration equipment has completed defrosting, controls the compressor of the refrigeration equipment to start running at a preset maximum compressor speed, and controls the fan of the refrigeration equipment to start running at a preset minimum fan speed, so as to realize pre-cooling of the evaporator. After the pre-cooling meets the preset pre-cooling cut-off condition, the compressor is controlled to run at a preset refrigeration compressor speed, and the fan is controlled to run at a preset refrigeration fan speed, so as to realize normal refrigeration operation. In the above scheme, before defrosting and starting refrigeration, pre-cooling is first performed. During this process, the compressor delivers the refrigerant to the evaporator at the highest speed, so as to quickly reduce the air temperature and humidity of the space where the evaporator is located. In addition, since the speed of the fan is extremely low, it can avoid the hot and humid air in the space where the evaporator is located from flowing into the storage room in large quantities to a certain extent, reduce the impact of the hot and humid air blowing into the storage room on the items in the storage room, and ensure that dry and cold air is delivered to the storage room when refrigeration is finally performed, effectively improving the storage effect of the items in the storage room of the refrigeration equipment.

[0078] See also Figure 5 A refrigeration equipment control system includes an evaporator 501, a compressor 503, a controller 505 and a fan 507. The evaporator 501, the compressor 503 and the fan 507 are respectively connected to the controller 505, the compressor 503 is connected to the evaporator 501, and the controller 505 is used to perform refrigeration control according to any of the above-mentioned refrigeration equipment control methods.

[0079] Specifically, during the operation of the refrigeration device, frost condenses on the surface of the evaporator 501 due to the low temperature, and defrosting refers to removing the frost condensed on the evaporator 501. It should be noted that the implementation method of the defrosting operation is not unique. In a more detailed embodiment, the refrigeration device is provided with an electric heating device. When defrosting, the controller 505 only needs to control the operation of the electric heating device to heat the evaporator 501 to increase its temperature.

[0080] The preset maximum compressor speed is the preset maximum speed that the compressor 503 of the current refrigeration device can reach during operation. The preset minimum fan speed is the preset minimum speed that the fan 507 of the current refrigeration device can reach during operation.

[0081] If the controller 505 detects that the evaporator 501 has completed defrosting, the refrigeration equipment will be controlled to enter the pre-refrigeration operation state. In this operation state, the controller 505 controls the compressor 503 of the refrigeration equipment to start running at the preset maximum compressor speed, and controls the fan 507 of the refrigeration equipment to start running at the preset minimum fan speed. Since the compressor 503 runs at a high speed, the temperature of the evaporator 501 can be quickly reduced, and the water molecules in the air in the space where the evaporator 501 is located can also start to condense, quickly reduce the air humidity, and obtain dry and cold air. At the same time, the fan 507 is turned on and the fan speed is set to the preset minimum fan speed to ensure that the low-speed fan 507 cannot blow the airflow into the storage compartment of the refrigeration equipment. At this time, the fan speed is too low, the operation is not stable, but it will produce weak vibrations and extremely low wind speeds. The vibrations can help the water droplets remaining on the evaporator 501 to fall off, and at the same time, the low wind flow will transport the hot and humid air in the space where the evaporator 501 is located to the vicinity of the evaporator 501. Since the temperature of the evaporator 501 drops rapidly to a relatively low level, the water molecules in the gas disappear rapidly through physical liquefaction or condensation, so that the air in the space where the evaporator 501 of the refrigeration equipment is located returns to a cold and dry state, and the low-humidity gas will achieve a better effect of refrigerating and preserving food.

[0082] After the controller 505 controls the compressor 503 and the fan 507 to start pre-cooling, it can also monitor the progress of pre-cooling in real time, and end the pre-cooling operation when the pre-cooling meets the preset pre-cooling cut-off condition. Correspondingly, at this time, the controller 505 will control the compressor 503 to switch from the preset maximum compressor speed to the preset cooling compressor speed, and control the fan 507 to switch from the preset minimum fan speed to the preset cooling fan speed.

[0083] See also Figure 6 In one embodiment, the refrigeration equipment control system further includes a temperature detector 509 , which is disposed on the evaporator 501 and connected to the controller 505 .

[0084] Specifically, during the defrosting process, the evaporator 501 needs to be heated for defrosting, which causes the temperature of the evaporator 501 to rise sharply. When entering the pre-cooling state, the temperature of the evaporator 501 drops rapidly due to the transmission of the refrigerant. Therefore, a temperature detector 509 can be set on the evaporator 501 to detect the temperature of the evaporator 501 in real time through the temperature monitor and send it to the controller 505. In this way, the controller 505 can monitor the operating state of the evaporator 501 according to the temperature of the evaporator 501.

[0085] The above refrigeration equipment control system, after detecting that the refrigeration equipment has completed defrosting, controls the compressor 503 of the refrigeration equipment to start running at a preset maximum compressor speed, and controls the fan 507 of the refrigeration equipment to start running at a preset minimum fan speed, so as to realize pre-cooling of the evaporator 501. After the pre-cooling meets the preset pre-cooling cut-off condition, the compressor 503 is controlled to run at a preset refrigeration compressor speed, and the fan 507 is controlled to run at a preset refrigeration fan speed, so as to realize normal refrigeration operation. In the above scheme, before defrosting ends and refrigeration begins, pre-cooling is first performed. During this process, the compressor 503 delivers the refrigerant to the evaporator 501 at the highest speed, so as to quickly reduce the air temperature and humidity of the space where the evaporator 501 is located. In addition, since the speed of the fan 507 is extremely low, it is possible to avoid a large amount of hot and humid air in the space where the evaporator 501 is located from flowing into the storage room to a certain extent, reduce the impact of the hot and humid air blowing into the storage room on the items in the storage room, and ensure that dry and cold air is delivered to the storage room when refrigeration is finally performed, effectively improving the storage effect of the items in the storage room of the refrigeration equipment.

[0086] A refrigeration device comprises any one of the above refrigeration device control systems.

[0087] For more information, please refer to refrigeration equipment. Figure 7, the specific structure of the refrigeration equipment control system is shown in the above embodiments and the accompanying drawings, and will not be repeated here. The above refrigeration equipment, after detecting that the refrigeration equipment has completed defrosting, controls the compressor of the refrigeration equipment to start running at a preset maximum compressor speed, and controls the fan of the refrigeration equipment to start running at a preset minimum fan speed, so as to achieve pre-cooling of the evaporator. After the pre-cooling meets the preset pre-cooling cut-off condition, the compressor is controlled to run at a preset refrigeration compressor speed, and the fan is controlled to run at a preset refrigeration fan speed, so as to achieve normal refrigeration operation. In the above scheme, before defrosting ends and refrigeration begins, pre-cooling is first performed. During this process, the compressor delivers the refrigerant to the evaporator at the highest speed, thereby quickly reducing the air temperature and humidity in the space where the evaporator is located. In addition, since the speed of the fan is extremely low, a large amount of humid and hot air in the space where the evaporator is located is prevented from flowing into the storage room to a certain extent, reducing the impact of the humid and hot air blowing into the storage room on the items in the storage room, and ensuring that dry and cold air is delivered to the storage room when refrigeration is finally performed, effectively improving the storage effect of the items in the storage room of the refrigeration equipment.

[0088] Furthermore, the refrigeration equipment is a device that can realize the refrigeration function and provide a low temperature and dry environment for storing items. The specific type is not limited, and it can be a refrigerator, a freezer, etc., without specific limitation.

[0089] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A refrigeration equipment control method, characterized in that: include: Detecting whether the evaporator of the refrigeration equipment has completed defrosting; If the evaporator is defrosted, the compressor of the refrigeration equipment is controlled to start running at a preset maximum compressor speed, and the fan of the refrigeration equipment is controlled to start running at a preset minimum fan speed to pre-cool the evaporator; If the pre-cooling meets the preset pre-cooling cut-off condition, the compressor is controlled to run at a preset refrigeration compressor speed, and the fan is controlled to run at a preset refrigeration fan speed.

2. The refrigeration equipment control method according to claim 1, characterized in that: Before detecting whether the evaporator of the refrigeration equipment has completed defrosting, the method further includes: If it is detected that the evaporator of the refrigeration equipment starts to be defrosted, the timing is started to obtain the defrost duration.

3. The refrigeration equipment control method according to claim 2, characterized in that: If the evaporator is defrosted, the compressor of the refrigeration equipment is controlled to start running at a preset maximum compressor speed, and the fan of the refrigeration equipment is controlled to start running at a preset minimum fan speed to pre-cool the evaporator, and the method further includes: Turn on the timing to get the pre-cooling time.

4. The refrigeration equipment control method according to claim 3, characterized in that: The pre-cooling meets the preset pre-cooling cut-off condition, including: The pre-cooling time reaches a preset multiple of the cumulative defrost time, and the cumulative defrost time is the defrost time when the evaporator completes defrosting.

5. The refrigeration equipment control method according to claim 1, characterized in that: Also includes: The evaporator temperature of the evaporator is obtained in real time.

6. The refrigeration equipment control method according to claim 5, characterized in that: The pre-cooling meets the preset pre-cooling cut-off condition, including: The evaporator temperature meets a preset temperature condition.

7. The refrigeration equipment control method according to claim 6, characterized in that: The evaporator temperature meets the preset temperature condition including: The evaporator temperature is less than or equal to a preset temperature threshold.

8. The refrigeration equipment control method according to claim 7, characterized in that: The method for determining the preset temperature threshold includes: Obtaining the initial evaporator temperature of the refrigeration equipment when defrosting is turned on; Analyze the preset temperature parameters and the preset minimum storage temperature corresponding to the storage compartment to obtain the calculated temperature; The minimum value between the initial evaporator temperature and the calculated temperature is used as the preset temperature threshold.

9. A refrigeration equipment control device, characterized in that: include: A defrost detection module, used to detect whether the evaporator of the refrigeration equipment has been defrosted; A pre-cooling module, for controlling the compressor of the refrigeration equipment to start running at a preset maximum compressor speed, and controlling the fan of the refrigeration equipment to start running at a preset minimum fan speed, if the evaporator has completed defrosting, so as to pre-cool the evaporator; The refrigeration module is used to control the compressor to run at a preset refrigeration compressor speed and control the fan to run at a preset refrigeration fan speed if the pre-refrigeration meets the preset pre-refrigeration cut-off condition.

10. A refrigeration equipment control system, characterized in that: It includes an evaporator, a compressor, a controller and a fan, the evaporator, the compressor and the fan are respectively connected to the controller, the compressor is connected to the evaporator, and the controller is used to perform refrigeration control according to the refrigeration equipment control method according to any one of claims 1-8.

11. The refrigeration equipment control system according to claim 10, characterized in that: It also includes a temperature detector, which is arranged on the evaporator and connected to the controller.

12. A refrigeration device, characterized in that: A refrigeration equipment control system comprising any one of claims 10-11.

13. The refrigeration device according to claim 12, characterized in that: The refrigeration equipment is a refrigerator.

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