Air conditioner, control method of air conditioner, and storage medium

By monitoring and controlling the temperature conditions of the air conditioner in real time, the problem of ethylene glycol solution freezing in ice storage air conditioners has been solved, ensuring the normal operation of the heat exchanger and improving cooling efficiency and user experience.

CN116538595BActive Publication Date: 2026-02-24GD MIDEA AIR CONDITIONING EQUIP CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202210093349.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-01-26
Publication Date
2026-02-24
Estimated Expiration
2042-01-26

AI Technical Summary

Technical Problem

In existing ice storage air conditioners, when the surface of the pipes in the heat exchanger assembly freezes, the pipes located at the center of the heat exchanger assembly cannot exchange heat efficiently in a timely manner, causing the ethylene glycol solution to freeze and affecting the cooling effect.

Method used

By monitoring the temperatures of the heat exchangers for both heat extraction and heat release in real time, it is determined whether the antifreeze conditions are met. When the conditions are met, the heat release circulation system is activated to allow the high-temperature medium to flow into the heat exchanger for heat exchange, thus preventing the ethylene glycol solution from freezing. At the same time, the operating frequency and speed of the compressor and fan are adjusted to control the temperature.

Benefits of technology

This effectively prevents the ethylene glycol solution from freezing in the heat exchanger, ensuring that the air conditioner can exchange heat normally when switched to cooling mode, thus improving cooling efficiency and user experience.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN116538595B_ABST
    Figure CN116538595B_ABST
Patent Text Reader

Abstract

The application discloses an air conditioner, a control method of the air conditioner and a storage medium. The air conditioner comprises a cold storage tank, a cold storage circulation system and a cold release circulation system. The cold storage circulation system comprises a condenser, an evaporator and a compressor. The cold release circulation system comprises a cold taking heat exchanger, a cold release heat exchanger and a first circulation pump. The evaporator and the cold taking heat exchanger are arranged in the cold storage tank. The air conditioner has a cold storage mode and a cold release mode. The control method comprises the following steps: obtaining that the cold storage circulation system runs in the cold storage mode; obtaining a first temperature Ta of the cold taking heat exchanger and a second temperature Tc of the cold release heat exchanger; judging whether the first anti-freezing condition is met based on the first temperature Ta and the second temperature Tc; and starting the cold release circulation system if the first anti-freezing condition is met. According to the control method of the air conditioner, the air conditioner can avoid the ice formation of the circulating medium in the cold taking heat exchanger to the greatest extent in the cold storage mode, so that the cold release circulation system can normally circulate and release cold when the air conditioner starts the cold release mode.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, specifically to an air conditioner, an air conditioner control method, and a storage medium. Background Technology

[0002] Ice storage air conditioners are widely used in daily life. The ice storage circulation system operates during idle periods to freeze the ice in the storage tank, achieving a cooling effect. During use, the cooling release circulation system melts the ice in the storage tank, achieving a cooling effect. Existing ice storage air conditioners generally employ static coil cooling technology. The storage material (e.g., water) uses a vapor compression refrigeration cycle to store energy through an evaporator. After freezing, the cooling capacity is output through a circulation of ethylene glycol solution in a heat exchanger. The evaporator and heat exchanger are typically placed within the storage material to form a heat exchanger assembly.

[0003] However, in the existing technology, when the surface of the pipes of the heat exchanger assembly freezes, the pipes located at the center of the heat exchanger assembly cannot exchange heat efficiently in time, which can easily cause local deep cooling during cold storage. As a result, after the freezing point of the ethylene glycol solution is reached, the ethylene glycol solution in the heat exchanger pipes will freeze, affecting its use during cooling. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, a first aspect of the present invention provides a control method for an air conditioner, which effectively solves the technical problem of ethylene glycol solution freezing in the cold storage mode of an air conditioner in the prior art.

[0005] The second aspect of this application is to propose an air conditioner.

[0006] A third aspect of this application is to provide a computer-readable storage medium.

[0007] According to a first aspect of the present invention, the air conditioner includes a cold storage tank, a cold storage circulation system, and a cold release circulation system. The cold storage circulation system includes a condenser, an evaporator, and a compressor. The cold release circulation system includes a heat exchanger for heat extraction, a heat exchanger for heat release, and a first circulation pump. The evaporator and the heat exchanger for heat extraction are both located inside the cold storage tank. The air conditioner has a cold storage mode and a cold release mode. The control method includes the following steps: obtaining information that the cold storage circulation system is operating in the cold storage mode; obtaining a first temperature Ta of the heat exchanger for heat extraction and a second temperature Tc of the heat exchanger for heat release; determining whether a first antifreeze condition is met based on the first temperature Ta and the second temperature Tc; and if the first antifreeze condition is met, controlling the cold release circulation system to start operation.

[0008] According to the control method of the air conditioner of the present invention, when the air conditioner is detected to be in cold storage mode, the first temperature Ta of the cold intake heat exchanger and the second temperature Tc of the cold release heat exchanger are acquired to determine whether the first temperature Ta and the second temperature Tc meet the first antifreeze condition. When it is determined that the first temperature Ta and the second temperature Tc meet the first antifreeze condition, the cold release circulation system is started. At this time, the high-temperature medium in the cold release heat exchanger can flow towards the cold intake heat exchanger to exchange heat with the low-temperature medium in the cold intake heat exchanger, avoiding the medium in the cold intake heat exchanger from freezing due to excessively low temperature. This effectively avoids the phenomenon that the medium in the cold intake heat exchanger does not need to circulate when the air conditioner is in the cold release circulation system. In other words, it ensures that when the air conditioner of the present application switches from cold storage mode to cold release mode, the cold release circulation system can effectively exchange heat with the indoor air to achieve cooling efficiency and improve user experience.

[0009] In some examples, the step of determining whether the first antifreeze condition is met based on the first temperature Ta and the second temperature Tc includes: determining whether the first temperature Ta is less than or equal to the first preset temperature Tb; if so, determining a first sub-condition that meets the first antifreeze condition; if the first sub-condition is determined to be met, determining whether a second sub-condition of the first antifreeze condition is met.

[0010] In some examples, the step of determining whether the second sub-condition of the first antifreeze condition is met includes: determining whether the second temperature Tc is greater than or equal to the second preset temperature Td; if so, determining that the second sub-condition of the first antifreeze condition is met; if the second sub-condition is determined to be met, controlling the cooling circulation system to start running.

[0011] In some examples, if it is determined that the first temperature Ta is greater than the first preset temperature Tb, the operation of the cold storage cycle system is maintained, and the first antifreeze condition is further determined based on the first temperature Ta and the second temperature Tc.

[0012] In some examples, the air conditioner further includes an air duct and a fan for ventilating the air duct, the condenser and the heat exchanger are both located in the air duct, and the condenser is located upstream of the heat exchanger in the airflow path of the fan; if it is determined that the second temperature Tc is less than the second preset temperature Td; the operating frequency of the compressor and / or the speed of the fan are adjusted to raise the temperature of the condenser.

[0013] In some examples, after the cooling circulation system is started, the steps further include: determining whether the second antifreeze condition is met based on the first temperature Ta; if the second antifreeze condition is met, controlling the cooling circulation system to stop running.

[0014] In some examples, the step of determining whether the second antifreeze condition is met based on the first temperature Ta includes: determining whether the first temperature Ta is greater than or equal to a third preset temperature Te; if so, determining that the second antifreeze condition is met.

[0015] In some examples, if it is determined that the second antifreeze condition is met, the compressor is also controlled to reduce its operating frequency.

[0016] In some examples, the air conditioner further includes a second circulation pump for drawing liquid from the bottom of the cold storage tank and pumping it back to the cold storage tank. The control method further includes the following steps: obtaining the flow rate q1 of the second circulation pump; determining whether the cold storage termination condition is met based on the flow rate q1; and controlling the cold storage circulation system to stop operating if the cold storage termination condition is met.

[0017] In some examples, the step of determining whether the end-of-cold-storage condition is met based on the flow rate q1 includes: determining whether the flow rate q1 is less than or equal to a set flow rate q2; if so, determining that the end-of-cold-storage condition is met.

[0018] According to a second aspect of the present invention, a computer-readable storage medium thereon stores a control program for an air conditioner, which, when executed by a processor, implements the control method for the air conditioner according to the above embodiments.

[0019] An air conditioner according to a third aspect embodiment of the present invention includes a memory, a processor, and a control program for the air conditioner stored in the memory and executable on the processor. When the processor executes the control program for the air conditioner, it implements the control method for the air conditioner according to the above embodiments.

[0020] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of an air conditioner according to some embodiments of the present invention.

[0023] Figure 2 This is a schematic diagram of a heat exchanger assembly according to some embodiments of the present invention.

[0024] Figure 3 This is a control logic diagram of an air conditioner according to some embodiments of the present invention;

[0025] Figure 4This is a control logic diagram of an air conditioner according to other embodiments of the present invention.

[0026] Figure label:

[0027] 1000. Air conditioner;

[0028] 100. Cold storage box; 110. Storage space;

[0029] 230. Spraying unit; 240. Second circulation pump;

[0030] 300. Cold storage circulation system; 310. Condenser; 320. Evaporator; 330. Throttling element; 340. Compressor;

[0031] 400. Cooling circulation system; 410. Cooling heat exchanger; 420. Cooling heat exchanger; 430. First circulation pump;

[0032] 500. Heat exchanger assembly;

[0033] 510. Heat exchanger assembly; 511. First refrigerant flow path; 512. Second refrigerant flow path;

[0034] 520. End connecting pipe; 530. First span fitting; 540. Second span fitting;

[0035] 600. Fan. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of this invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] The following is for reference. Figures 1-4 A control method according to an embodiment of the present invention is described.

[0039] Among them, such as Figure 1As shown, the air conditioner 1000 according to an embodiment of the present invention includes a cold storage circulation system 300. The cold storage circulation system 300 includes a condenser 310, an evaporator 320, and a compressor 340. The inlet of the compressor 340 is connected to the outlet of the condenser 310, the outlet of the compressor 340 is connected to the inlet of the evaporator 320, and the outlet of the evaporator 320 is connected to the inlet of the condenser 310, thereby forming a cold storage circulation loop for circulating the refrigerant, which facilitates the purpose of cold storage. A throttling element 330 is provided between the condenser 310 and the evaporator 320.

[0040] The air conditioner 1000 also includes a cooling circulation system 400, which includes a cooling heat exchanger 410, a cooling heat exchanger 420, and a first circulation pump 430. The inlet of the cooling heat exchanger 410 is connected to the outlet of the cooling heat exchanger 420, and the outlet of the cooling heat exchanger 410 is connected to the inlet of the cooling heat exchanger 420. The first circulation pump 430 is connected between the cooling heat exchanger 410 and the cooling heat exchanger 420, thus forming a cooling circulation loop for circulating the cooling medium, facilitating the cooling purpose. The cooling medium can be an ethylene glycol solution, which has high heat exchange efficiency, thereby improving the cooling effect. The following explanation mainly uses an ethylene glycol solution as the cooling medium.

[0041] Of course, in other examples, the cold storage circulation system 300 can form a cold release circulation loop for circulating the cold medium to facilitate the refrigeration purpose, and correspondingly, the cold release circulation system 400 can form a cold storage circulation loop for circulating the refrigeration medium to facilitate the cold storage purpose.

[0042] For ease of description, this application mainly uses the cold storage circulation system 300 for cold storage and the cold release circulation system 400 for refrigeration as examples.

[0043] like Figure 1 As shown, the air conditioner 1000 also includes a cold storage tank 100, and the evaporator 320 and the heat exchanger 410 are all located inside the cold storage tank 100. The cold storage tank 100 has a containment space 110, which is suitable for containing a cold storage medium (such as water). The water is suitable for turning into ice when the cold storage circulation system 300 is activated, and also suitable for turning into water when the heat release circulation system 400 is activated. The cold storage circulation system 300 and the heat release circulation system 400 are independent of each other and continuously alternate according to the "cold storage-heat release-cold storage" cycle to ensure that the air conditioner 1000 can operate safely and stably.

[0044] The air conditioner 1000 has a cold storage mode. In this mode, the compressor 340 in the cold storage circulation system 300 starts working, causing the refrigerant to circulate between the compressor 340, condenser 310, throttling element 330, and evaporator 320. During the flow of the refrigerant, the evaporator 320 continuously cools the water in the cold storage tank 100 until the water in the cold storage tank 100 is completely frozen, completing the cold storage process. Specifically, by placing the evaporator 320 within the containing space 110, the evaporation temperature is controlled below the freezing point of water (typically -15 to -5°C). As the circulation process continues, the evaporator 320 continuously cools the cold storage tank 100 until the water in the cold storage tank 100 is completely frozen.

[0045] The air conditioner 1000 also has a cooling mode. In the cooling mode, the first circulation pump 430 starts to work, causing the cooling medium to circulate between the cooling heat exchanger 410 and the cooling heat exchanger 420. When the cooling medium circulates to the cooling heat exchanger 410, since the cooling heat exchanger 410 is located in the housing space 110, the cooling medium at this time is used to exchange heat with the ice in the housing space 110 to reduce the temperature of the cooling medium. Then, under the action of the first circulation pump 430, the cooling medium flows to the cooling heat exchanger 420 and exchanges heat with the outside air, releasing the cold energy to achieve the cooling effect.

[0046] Since the evaporator 320 and the heat exchanger 410 are generally not used simultaneously, in order to maximize heat exchange efficiency, combined with Figure 1 and Figure 2 As shown, the heat exchanger 410 and the evaporator 320 are formed as a single unit to construct a heat exchanger assembly 500. The heat exchanger assembly 500 includes at least one row of heat exchange groups 510. A first refrigerant flow path 511 and a second refrigerant flow path 512 are respectively arranged side by side in each row of heat exchange groups 510. The first refrigerant flow path 511 is used for the heat exchanger 410, and the second refrigerant flow path 512 is used for the evaporator 320. This can be understood as follows: the first refrigerant flow path 511 is used for the flow of the cooling medium, and the second refrigerant flow path 512 is used for the flow of the refrigerant. Since the heat exchanger 410 and the evaporator 320 are generally not used at the same time, when the air conditioner 1000 starts the cold storage mode, the refrigerant can exchange heat with water through the second refrigerant flow path 512 to achieve the purpose of cold storage; when the air conditioner 1000 starts the cooling mode, the cooling medium can exchange heat with ice through the evaporator 320 to achieve the purpose of cooling, thus making the heat exchanger 410 and the evaporator 320 form an integrated unit.

[0047] In a specific example, each heat exchanger group 510 includes multiple heat exchange tubes, end connecting pipes 520, and multiple fins. The multiple heat exchange tubes are interspersed on multiple fins. A flowing cooling medium or refrigerant is provided inside the heat exchange tubes. Some heat exchange tubes are connected through the end connecting pipes 520 to form a connected first refrigerant flow path 511, and another part of the heat exchange tubes are connected through the end connecting pipes 520 to form a connected second refrigerant flow path 512.

[0048] In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0049] It should be noted that by alternating the first refrigerant flow path 511 and the second refrigerant flow path 512, this application ensures that each row of heat exchange groups 510 can be used for heat exchange when the cooling medium exchanges heat with ice or when the refrigerant exchanges heat with water, thus further avoiding the waste of fin area.

[0050] Optionally, the heat exchange tube can be a straight tube, and the end connecting pipe 520 can be a bent tube. The bent tube can be arc-shaped, and the heat exchange tube can be a copper tube, but the invention is not limited to this. The heat exchange tube can also be a tube that serves the same function as a copper tube, for example, an aluminum tube. The end connecting pipe 520 can be welded to the heat exchange tube to improve the connection strength between the heat exchange tube and the end connecting pipe 520, preventing leakage of the cooling medium or refrigerant during flow.

[0051] It should be noted that by setting the heat exchange tube as a straight tube, the structure of the heat exchange tube can be simplified and the assembly of the heat exchange tube and the fins can be facilitated. In addition, by setting the end connecting pipe 520 as a bent pipe, interference between the first refrigerant flow path 511 and the second refrigerant flow path 512 can be avoided, thereby preventing adjacent end connecting pipes 520 from being damaged, extending the service life of the end connecting pipe 520, and also facilitating the connection between the end connecting pipe 520 and the heat exchange tube.

[0052] Optionally, such as Figure 2 As shown, the heat exchanger assembly 500 includes a multi-row heat exchange group 510. The multi-row heat exchange group 510 can simultaneously exchange heat with the cold storage medium in the cold storage box 100, further improving the heat exchange efficiency of the heat exchanger assembly 500 and improving the quality of cold storage or release.

[0053] Optionally, the first refrigerant flow path 511 and the second refrigerant flow path 512 of two adjacent heat exchanger groups 510 are staggered to avoid interference between the first refrigerant flow path 511 and the second refrigerant flow path 512.

[0054] Optionally, such as Figure 2As shown, the first refrigerant flow path 511 of adjacent rows of heat exchange groups 510 is connected by a first cross pipe fitting 530. Connecting the first refrigerant flow path 511 of adjacent rows of heat exchange groups 510 through the first cross pipe fitting 530 allows each row of heat exchange groups 510 to simultaneously have a cooling medium, thereby enabling the cooling medium to flow in multiple rows of heat exchange groups 510. The cooling medium in multiple rows of heat exchange groups 510 simultaneously exchanges heat with the cold storage medium, improving heat exchange efficiency and thus improving the cooling efficiency of the air conditioner 1000.

[0055] Optionally, such as Figure 2 As shown, the second refrigerant flow paths 512 of adjacent rows of heat exchange groups 510 are connected by a second cross pipe fitting 540. Connecting the second refrigerant flow paths 512 of adjacent rows of heat exchange groups 510 through the second cross pipe fitting 540 allows each row of heat exchange groups 510 to simultaneously contain refrigerant, thereby enabling the refrigerant to flow in multiple rows of heat exchange groups 510. The refrigerant in multiple rows of heat exchange groups 510 simultaneously exchanges heat with the cold storage medium, improving heat exchange efficiency and thus improving the cold storage efficiency of the air conditioner 1000.

[0056] Optionally, the shape of the first span fitting 530 is the same as that of the second span fitting 540. This arrangement simplifies the structure of the first span fitting 530 and the second span fitting 540, facilitates their production, and allows for the production of both span fittings using only one set of molds or a single mold. This reduces the need for mold development and thus lowers the production cost of the first span fittings 530 and the second span fitting 540.

[0057] Optionally, the flow space is defined by spacing between adjacent rows of heat exchanger groups 510. This ensures that the flow space between adjacent rows of heat exchanger groups 510 contains a cold storage medium, thereby increasing the heat exchange area between the heat exchanger assembly 500 and the cold storage medium, making the heat exchange between the cold storage medium and the heat exchanger assembly 500 more uniform, and reducing the temperature difference between different areas of the cold storage medium.

[0058] It should be noted that the above-mentioned heat exchanger 410 and evaporator 320 are integrated into a single unit to form heat exchanger assembly 500. The innovative structure of heat exchanger assembly 500 is particularly advantageous for turning the water phase into ice and making the ice temperature lower, thereby improving the cold storage quality. However, the lower ice temperature can also easily cause the cooling medium in the heat exchanger 410 to freeze, that is, it can easily cause the ethylene glycol solution to freeze, affecting the cooling effect. Therefore, this application innovatively provides the following control method for air conditioner 1000.

[0059] like Figure 3 As shown, the control method of the air conditioner 1000 according to an embodiment of the present invention includes the following steps:

[0060] S1. The cold storage circulation system 300 is operating in cold storage mode;

[0061] Specifically, when the user does not need to use the air conditioner 1000, they can control the compressor 340 in the cold storage circulation system 300 to work. At this time, the air conditioner 1000 enters the cold storage mode, and the evaporator 320 will continuously cool the water in the cold storage tank 100 until the water in the cold storage tank 100 is completely frozen, so as to achieve the purpose of cold storage.

[0062] S2. Obtain the first temperature Ta of the cold-exhausting heat exchanger 410 and the second temperature Tc of the cold-releasing heat exchanger 420.

[0063] Specifically, since both the evaporator 320 and the heat exchanger 410 are located inside the cold storage tank 100, as the running time of the cold storage mode increases, the evaporator 320 will lower the temperature inside the cold storage tank 100, thereby lowering the temperature of the heat exchanger 410. This causes the temperature of the heat exchanger 410 to change continuously with the increase of the running time of the cold storage mode. Therefore, when the air conditioner 1000 enters the cold storage mode, this application starts to detect the first temperature Ta of the heat exchanger 410 and the second temperature Tc of the heat exchanger 420 to determine the first temperature Ta of the heat exchanger 410 in real time, so as to avoid the ethylene glycol solution inside the heat exchanger 410 from freezing due to the low first temperature Ta of the heat exchanger 410.

[0064] It should be noted that the first temperature Ta of the heat exchanger 410 mentioned here is actually the temperature of the ethylene glycol solution inside the heat exchanger 410, in order to monitor the temperature of the ethylene glycol solution inside the heat exchanger 410 in real time, and thus determine whether the freezing point of the ethylene glycol solution has been reached; correspondingly, the second temperature Tc of the heat exchanger 420 is actually the temperature of the ethylene glycol solution inside the heat exchanger 420, in order to monitor the temperature of the ethylene glycol solution inside the heat exchanger 420 in real time.

[0065] Optionally, a first sensor is provided on the heat exchanger 410 for cooling and a second sensor is provided on the heat exchanger 420 for cooling. The first sensor is used to detect the first temperature Ta of the heat exchanger 410 in real time, and the second sensor is used to detect the second temperature Tc of the heat exchanger 420 in real time. Both the first and second sensors can be temperature sensors.

[0066] S3. Determine whether the first antifreeze condition is met based on the first temperature Ta and the second temperature Tc.

[0067] In other words, after detecting and obtaining the first temperature Ta of the heat exchanger 410 and the second temperature Tc of the heat exchanger 420, it will also determine whether the first temperature Ta and the second temperature Tc meet the first antifreeze condition based on the detection results, thereby determining whether the ethylene glycol solution in the heat exchanger 410 has reached the freezing point and whether the ethylene glycol solution in the heat exchanger 420 can be heated by the ethylene glycol solution in the heat exchanger 410.

[0068] S4. If the first antifreeze condition is met, start the cooling circulation system 400.

[0069] In other words, when the sensor detects that the ethylene glycol solution in the heat exchanger 410 has reached its freezing point and that the ethylene glycol solution in the heat exchanger 420 can be heated by the ethylene glycol solution in the heat exchanger 410, the first circulation pump 430 starts to work. At this time, the ethylene glycol solution in the heat exchanger 420 moves towards the heat exchanger 410 to circulate, so that the ethylene glycol solution with a higher temperature outside the cold storage tank 100 can circulate, thereby exchanging heat with the ethylene glycol solution in the cold storage tank 100, so that the temperature of the ethylene glycol solution in the heat exchanger 410 can be raised, and the ethylene glycol solution is prevented from freezing.

[0070] At the same time, the cold storage circulation system 300 continues to store ice to achieve the purpose of cold storage.

[0071] According to the air conditioner 1000 control method of the present invention, in the cold storage mode, the first temperature Ta of the cold heat exchanger 410 is detected in real time to determine whether the ethylene glycol solution in the cold heat exchanger 410 has reached the freezing point. After the ethylene glycol solution in the cold heat exchanger 410 reaches the freezing point, the cold release circulation system 400 is started to use the ethylene glycol solution in the cold release heat exchanger 420 to raise the temperature of the ethylene glycol solution in the cold heat exchanger 410, thereby minimizing the freezing of the ethylene glycol solution in the cold storage box 100. In this way, when the air conditioner 1000 starts the cold release mode, the ethylene glycol solution in the cold storage box 100 can be effectively used to exchange heat with the outside air to achieve the purpose of cooling, thereby meeting user needs and improving user experience.

[0072] According to some embodiments of the present invention, such as Figure 4 As shown, the steps for determining whether the first antifreeze condition is met based on the first temperature Ta and the second temperature Tc include:

[0073] Determine whether the first temperature Ta is less than or equal to the first preset temperature Tb;

[0074] If so, determine that the first sub-condition of the first antifreeze condition is met;

[0075] If the first sub-condition is satisfied, determine whether the second sub-condition of the first antifreeze condition is satisfied.

[0076] Specifically, a first temperature sensor is installed on the heat exchanger 410. In the cold storage mode, the compressor 340 starts to work, causing the refrigerant to circulate in the condenser 310, evaporator 320 and throttling element 330. When the refrigerant circulates into the evaporator 320, the lower-temperature refrigerant exchanges heat with the water in the cold storage tank 100. The water turns into ice after being cooled. At this time, since the heat exchanger 410 is located in the cold storage tank 100, when the lower-temperature refrigerant exchanges heat with the water in the cold storage tank 100, it will also exchange heat with the ethylene glycol solution in the heat exchanger 410 to change the temperature of the ethylene glycol solution. During this process, the first temperature sensor detects the first temperature Ta of the ethylene glycol in the heat exchanger 410 in real time.

[0077] When Ta ≤ Tb, it indicates that the temperature of the ethylene glycol solution in the heat exchanger 410 is low, reaching the freezing point of ethylene glycol, which satisfies the first sub-condition, indicating that the temperature of the ethylene glycol solution in the heat exchanger 410 needs to be increased. Here, Tb is the first preset temperature. When the first temperature Ta is higher than the first preset temperature Tb, it means the first temperature Ta is normal, meaning the ethylene glycol solution in the heat exchanger 410 will not freeze. When the first temperature Ta is equal to or lower than the first preset temperature Tb, it indicates that the temperature of the ethylene glycol solution in the heat exchanger 410 is low, posing a risk of freezing, and the ethylene glycol solution needs to be heated.

[0078] Optionally, in other examples, in addition to determining whether the first temperature Ta is less than or equal to the first preset temperature Tb, it is also possible to determine whether the first temperature Ta and the first preset temperature Tb satisfy a certain relationship, such as whether the difference between the first temperature Ta and the first preset temperature Tb is less than or equal to the value 5.

[0079] Optionally, if it is determined that the first temperature Ta is greater than the first preset temperature Tb, that is, if the temperature value of the first temperature Ta is determined to be normal and the ethylene glycol solution in the heat exchanger 410 will not freeze, the cold storage circulation system 300 is maintained in operation. At this time, the cold storage circulation system 300 continues to control the circulation of the refrigerant to continue to turn the water phase in the cold storage box 100 into ice, so as to achieve the purpose of cold storage and prepare for the air conditioner 1000 to start the cooling mode.

[0080] Optionally, such as Figure 4As shown, when it is determined that the first temperature Ta is greater than the first preset temperature Tb and the cold storage circulation system 300 is maintained in operation, the system continues to determine whether the first antifreeze condition is met based on the first temperature Ta and the second temperature Tc. That is, when the air conditioner 1000 is in cold storage mode, it will continuously detect the first temperature Ta and the second temperature Tc, and continuously determine whether there is a risk of freezing of the ethylene glycol solution in the cold heat exchanger 410 based on the first temperature Ta and the second temperature Tc, thereby avoiding freezing of the ethylene glycol solution in the cold heat exchanger 410.

[0081] Optionally, such as Figure 4 As shown, the steps for determining whether the second sub-condition of the first antifreeze condition is met include:

[0082] Determine whether the second temperature Tc is greater than or equal to the second preset temperature Td;

[0083] If so, determine that the second sub-condition of the first antifreeze condition is met;

[0084] If the second sub-condition is met, the cooling cycle system 400 is started.

[0085] In other words, when it is determined that the first temperature Ta is less than or equal to the first preset temperature Tb, which means that there is a risk of freezing of the ethylene glycol solution in the heat exchanger 410, the system begins to determine whether the second temperature Tc of the heat exchanger 420 is greater than or equal to the second preset temperature Td. If the second temperature Tc of the heat exchanger 420 is greater than or equal to the second preset temperature Td, it means that the temperature of the ethylene glycol solution in the heat exchanger 420 is high. At this time, the air conditioner 1000's cooling circulation system 400 is turned on, so that the ethylene glycol solution in the cooling circulation system 400 is circulated. This facilitates the use of the ethylene glycol solution in the heat exchanger 420 to raise the temperature of the ethylene glycol solution in the heat exchanger 410, thus preventing the ethylene glycol solution in the heat exchanger 410 from freezing.

[0086] Specifically, a second temperature sensor is installed on the heat exchanger 420 to detect the temperature Tc of the ethylene glycol solution inside the heat exchanger 420 in real time. Because the heat exchanger 420 is located outside the cold storage tank 100, in cold storage mode, when the evaporator 320 lowers the temperature of the water inside the cold storage tank 100, it will not affect the ethylene glycol solution inside the heat exchanger 420; that is, it will not lower the temperature of the ethylene glycol solution inside the heat exchanger 420.

[0087] When Tc ≥ Td, it indicates that the temperature of the ethylene glycol solution in the cooling heat exchanger 420 is relatively high. At this time, the cooling circulation system 400 of the air conditioner 1000 is activated, allowing the ethylene glycol solution in the cooling heat exchanger 420 to move towards the cooling heat exchanger 410. This enables the high-temperature ethylene glycol solution to exchange heat with the low-temperature ethylene glycol solution in the cooling heat exchanger 410, thereby raising the temperature of the ethylene glycol solution in the cooling heat exchanger 410 and preventing it from freezing. Here, Td is the second preset temperature. When the second temperature Tc is higher than the second preset temperature Td, it indicates that the second temperature Tc is high. In this case, the ethylene glycol solution in the cooling heat exchanger 420 can be used to raise the temperature of the ethylene glycol solution in the cooling heat exchanger 410, ensuring that the temperature rise of the ethylene glycol solution in the cooling heat exchanger 410 is normal.

[0088] It should be noted that during the start-up and operation of the cooling circulation system 400, the cold storage circulation system 300 continues to perform cold storage work. That is, at this time, the cooling circulation system 400 and the cold storage circulation system 300 of the air conditioner 1000 are in a synchronous start-up state.

[0089] Optionally, in some other examples, in addition to determining whether the second temperature Tc is greater than or equal to the second preset temperature Td, it is also possible to determine whether the second temperature Tc and the second preset temperature Td satisfy a certain relationship, such as whether the difference between the second temperature Tc and the second preset temperature Td is greater than or equal to the value 5.

[0090] When the second temperature Tc is lower than the second preset temperature Td, it indicates that the temperature of the ethylene glycol solution in the cooling heat exchanger 420 is low. Using this temperature to raise the temperature of the ethylene glycol solution in the cooling heat exchanger 410 may not effectively guarantee the normal temperature rise of the ethylene glycol solution in the cooling heat exchanger 410. Therefore, to ensure the normal temperature rise of the ethylene glycol solution in the cooling heat exchanger 410, the air conditioner 1000 of this application further includes the following structure.

[0091] Optionally, such as Figure 1 As shown, the air conditioner 1000 also includes an air duct and a fan 600. The fan 600 ventilates the air duct, and the condenser 310 and the cooling heat exchanger 420 are both located inside the air duct. Thus, as the fan 600 rotates, it drives the air that has undergone heat exchange within the air duct to flow, thereby achieving air delivery. For example, when the air conditioner 1000 is in cold storage mode, the air temperature inside the air duct is high, and the fan 600 can blow out hot air; when the air conditioner 1000 is in cooling mode, the air temperature inside the air duct is low, and the fan 600 can blow out cool air, achieving the purpose of cooling and ensuring the safe and stable operation of the air conditioner 1000.

[0092] Optionally, in the airflow path of the fan 600, the condenser 310 is located upstream of the heat exchanger 420. Since the condenser 310 and the heat exchanger 420 are generally not used simultaneously, placing them in the same air duct, i.e., sharing a single air duct, can maximize heat exchange efficiency, and the condenser 310 is located upstream of the heat exchanger 420. In cold storage mode, the condenser 310 is at a high temperature, which can heat the air in the air duct, thereby blowing out hot air. Since the heat exchanger 420 is also located in the air duct, when the air conditioner 1000 activates the cold storage mode and blows out hot air using the fan 600, some of the hot air will act on the heat exchanger 420 to raise the temperature of the ethylene glycol solution in the heat exchanger 420, thereby achieving the purpose of heating the ethylene glycol solution in the heat exchanger 420.

[0093] It should be noted that, with the above configuration, this application only requires one fan 600 to drive the airflow to exchange heat with the condenser 310 and the heat exchanger 420, thereby reducing the number of fans 600, thus reducing the cost of the air conditioner 1000 and simplifying its structure.

[0094] Optionally, such as Figure 4 As shown, if the second temperature Tc is determined to be less than the second preset temperature Td;

[0095] Adjust the operating frequency of compressor 340 to raise the temperature of condenser 310.

[0096] Specifically, if the second temperature Tc is less than the second preset temperature Td, it indicates that the temperature of the ethylene glycol solution in the cooling heat exchanger 420 is low. If this temperature is used to raise the temperature of the ethylene glycol solution in the cooling heat exchanger 410, it may not effectively guarantee the normal temperature rise of the ethylene glycol solution in the cooling heat exchanger 410. Therefore, this application begins to adjust the operating frequency of the compressor 340, specifically by increasing the operating frequency of the compressor 340. Increasing the operating frequency of the compressor 340 causes the condenser 310 to heat up rapidly, and under the effect of heat conduction, the second temperature Tc rises rapidly.

[0097] Optionally, after the second temperature Tc of the cooling heat exchanger 420 rises rapidly, it is also used to detect the second temperature Tc and determine whether the second temperature Tc is greater than or equal to the second preset temperature Td. When the second temperature Tc is greater than or equal to the second preset temperature Td, the cooling circulation system 400 is controlled to start operation so as to use the ethylene glycol solution in the cooling heat exchanger 420 to raise the temperature of the ethylene glycol solution in the cooling heat exchanger 410, thereby preventing the ethylene glycol solution in the cooling heat exchanger 410 from freezing.

[0098] In other instances, such as Figure 4As shown, the condenser 310 can also be heated by adjusting the speed of the fan 600. Specifically, if the second temperature Tc is detected to be lower than the second preset temperature Td, this application starts to adjust the speed of the fan 600. Specifically, the speed of the fan 600 can be increased. After the speed of the fan 600 is increased, the condenser 310 side heats up rapidly. Under the action of heat conduction, the second temperature Tc rises rapidly, thereby ensuring that the temperature of the ethylene glycol solution in the heat exchanger 420 can be effectively used to heat the ethylene glycol solution in the heat exchanger 410.

[0099] Advantageously, such as Figure 4 As shown, when the second temperature Tc is detected to be less than the second preset temperature Td, the operating frequency of the compressor 340 and the speed of the fan 600 are increased simultaneously. At this time, the condenser 310 side can be heated up as quickly as possible, thereby improving the heat exchange efficiency and heat exchange quality between the condenser 310 and the heat exchanger 420. This ensures that the ethylene glycol solution in the heat exchanger 420 can be heated up in a short time, and also helps to improve the heat exchange efficiency between the ethylene glycol solution in the heat exchanger 420 and the ethylene glycol solution in the heat exchanger 410. This allows the ethylene glycol solution in the heat exchanger 410 to be heated up in a short time, thereby preventing the ethylene glycol solution in the heat exchanger 410 from freezing.

[0100] According to some embodiments of the present invention, such as Figure 4 As shown, after the cooling circulation system 400 is started and running, the following steps are also included:

[0101] Determine whether the second antifreeze condition is met based on the first temperature Ta.

[0102] If the second antifreeze condition is confirmed to be met, the cooling circulation system 400 will stop operating.

[0103] In other words, after the cooling circulation system 400 starts running, it will continue to monitor the temperature of the ethylene glycol solution in the cooling heat exchanger 410. Specifically, after the cooling circulation system 400 starts running, it will use the first temperature sensor to detect the first temperature Ta of the cooling heat exchanger 410, and will also determine whether the first temperature Ta meets the second antifreeze condition based on the detection result, thereby determining whether the ethylene glycol solution in the cooling heat exchanger 410 has risen in temperature and the temperature is higher than the freezing point of the ethylene glycol solution.

[0104] When it is determined that the ethylene glycol solution in the heat exchanger 410 has been effectively heated and its temperature is above the freezing point of the ethylene glycol solution, the cooling circulation system 400 is shut down to stop heating the ethylene glycol solution in the heat exchanger 410. This is because the ethylene glycol solution in the heat exchanger 410 has already been effectively heated and its temperature exceeds the freezing point of the ethylene glycol solution, meaning that the ethylene glycol solution in the heat exchanger 410 will not freeze at this point. Shutting down the cooling circulation system 400 in a timely manner can prevent the water in the cold storage tank 100 from failing to turn into ice due to the high temperature of the ethylene glycol solution in the heat exchanger 410; it can also reduce the energy consumption of the air conditioner 1000.

[0105] In other words, when the first temperature Ta meets the second antifreeze condition, this application controls the cooling circulation system 400 to stop operating, which can ensure that the water in the cold storage box 100 can effectively turn into ice, thereby improving the cold storage quality and cold storage efficiency of the air conditioner 1000.

[0106] Optionally, such as Figure 4 As shown, the steps for determining whether the second antifreeze condition is met based on the first temperature Ta include:

[0107] Determine whether the first temperature Ta is greater than or equal to the third preset temperature Te;

[0108] If so, then the second antifreeze condition is met.

[0109] Specifically, after the cooling circulation system 400 is started, the first temperature sensor starts to detect the first temperature Ta of the cooling heat exchanger 410 to ensure that the ethylene glycol solution in the cooling heat exchanger 410 is effectively heated. When it is determined that the first temperature Ta is greater than or equal to the third preset temperature Te, it means that the ethylene glycol solution in the cooling heat exchanger 410 has been effectively heated and the temperature of the ethylene glycol solution will not cause the ethylene glycol solution to freeze. At this time, in order to ensure that the air conditioner 1000 can store cold in the cold storage box 100 normally, the cooling circulation system 400 is stopped.

[0110] In the description of this invention, the features defined as "first," "second," and "third" are used to distinguish the descriptive features, without any order or distinction of importance.

[0111] Optionally, if the second antifreeze condition is determined to be met, the compressor 340 is also controlled to reduce its operating frequency. That is, while controlling the cooling circulation system 400 to stop operating, the operating frequency of the compressor 340 is also reduced to reduce the energy consumption of the air conditioner 1000 and improve the user experience.

[0112] Of course, in some other instances, when it is determined that the second temperature Tc is less than the second preset temperature Td, and the speed of the fan 600 is adjusted, it is also necessary to control the fan 600 to reduce its speed when it is determined that the second antifreeze condition is met.

[0113] Optionally, when it is determined that the second antifreeze condition is not met based on the first temperature Ta, that is, when it is determined that the first temperature Ta is less than the third preset temperature Te, the operation state of the cooling circulation system 400 is maintained, so that the ethylene glycol solution in the cooling heat exchanger 420 can continue to heat the ethylene glycol solution in the cooling heat exchanger 410.

[0114] Optionally, while maintaining the operation of the cooling circulation system 400, it is also used to detect the first temperature Ta of the cooling heat exchanger 410 in real time, so as to accurately determine the relationship between the first temperature Ta and the third preset temperature Te.

[0115] According to some embodiments of the present invention, such as Figure 1 As shown, the air conditioner 1000 also includes a second circulation pump 240, which is used to extract liquid from the bottom of the cold storage tank 100 and pump it back into the cold storage tank 100. This accelerates the flow of liquid, reduces the temperature difference inside the cold storage tank 100, and increases the cold storage speed. The liquid mentioned here is the aforementioned cold storage medium, namely water.

[0116] Optionally, the second circulation pump 240 is installed inside the cold storage tank 100 and located at the bottom of the cold storage tank 100. Firstly, the second circulation pump 240 can be directly placed inside the cold storage tank 100 without the need for additional connecting pipes, thus simplifying the structure of the air conditioner 1000. Secondly, the side wall of the cold storage tank 100 can protect the second circulation pump 240, thereby extending its service life. Thirdly, the cold storage medium located at the bottom of the containing space 110 can also be circulated through the second circulation pump 240, so that the water in the cold storage tank 100 can all be converted into ice, thereby improving the cold storage quality.

[0117] Of course, in some other examples, the second circulation pump 240 may also be located outside the cold storage tank 100 and connected to the cold storage tank 100 via pipeline.

[0118] Optionally, such as Figure 1 As shown, the air conditioner 1000 also includes a spray unit 230. The spray unit 230 is connected to a second circulation pump 240 through a pipeline. The second circulation pump 240 is used to draw liquid from the containing space 110 and supply it to the spray unit 230. After receiving the liquid, the spray unit 230 sprays water into the cold storage box 100 to accelerate the circulation of the liquid.

[0119] In some instances, such as Figure 1As shown, the spray unit 230 is installed inside the cold storage box 100 and located on top of the evaporator 320. When the spray unit 230 receives water and sprays it into the cold storage box 100, some of the liquid can be sprayed onto the evaporator 320 and directly exchange heat with the refrigerant in the evaporator 320 to improve the cold storage efficiency.

[0120] Optionally, when the air conditioner 1000 turns on the compressor 340 to store cold, the second circulation pump 240 turns on simultaneously.

[0121] Optionally, when the air conditioner 1000 includes a second circulation pump 240, such as Figure 4 As shown, the control method for the air conditioner 1000 also includes the following steps:

[0122] Obtain the flow rate q1 of the second circulation pump 240;

[0123] Determine whether the conditions for ending cold storage are met based on the flow rate q1;

[0124] If the conditions for ending cold storage are met, control the cold storage cycle system 300 to stop operating.

[0125] Specifically, a third sensor is installed on the second circulation pump 240. When the air conditioner 1000 turns on the cold storage mode and the second circulation pump 240 starts to draw liquid from the cold storage tank 100, the third sensor starts to detect the flow rate q1 of the liquid flowing through the second circulation pump 240, and determines whether the cold storage end condition is met based on the flow rate q1, that is, whether the cold storage tank 100 has completed cold storage. When it is determined that the cold storage tank 100 has completed cold storage, the cold storage circulation system 300 is controlled to stop running. At this time, the compressor 340 stops running and the second circulation pump 240 stops drawing liquid from the cold storage tank 100, thus completing the cold storage work.

[0126] Optionally, the third sensor may be a flow sensor, which accurately obtains the flow rate q1 based on the flow rate detected by the flow sensor flowing through the second circulation pump 240.

[0127] Optionally, such as Figure 4 As shown, the steps for determining whether the cold storage termination condition is met based on the flow rate q1 include:

[0128] Determine if the flow rate q1 is less than or equal to the set flow rate q2;

[0129] If so, confirm that the conditions for ending cold storage have been met.

[0130] Specifically, when the air conditioner 1000 turns on the cold storage mode and the second circulation pump 240 draws liquid from the cold storage tank 100, the third sensor starts to detect the liquid flow rate q1 flowing through the second circulation pump 240 and compares the flow rate q1 with the set flow rate q2. When the flow rate q1 is less than or equal to the set flow rate q2, it indicates that there is less liquid in the cold storage tank 100. At this time, it is reflected that most of the liquid in the cold storage tank 100 has turned into ice. It is determined that the air conditioner 1000 meets the conditions for ending cold storage, so the cold storage circulation system 300 is controlled to stop running.

[0131] It should be noted that the aforementioned control of the cold storage circulation system 300 to stop operation can be a reminder to the user, allowing the user to manually shut down the cold storage circulation system 300, or it can be that the air conditioner 1000 automatically controls the cold storage circulation system 300 to shut down.

[0132] The set flow rate q2 is a preset value. When the flow rate q1 is less than or equal to the set flow rate q2, it means that there is less liquid in the cold storage box 100. When the flow rate q1 is greater than the set flow rate q2, it means that there is more water in the cold storage box 100 that has not been converted into ice. At this time, the cold storage circulation system 300 is maintained to continue the cold storage work.

[0133] Specifically, when q1≤q2, it indicates that the amount of liquid in the cold storage tank 100 is relatively small. This can also be understood as most of the liquid in the cold storage tank 100 has already turned into ice, and the cold storage work is complete. As a result, the second circulation pump 240 cannot extract too much liquid from the cold storage tank 100, causing the flow rate q1 flowing through the second circulation pump 240 to be less than or equal to the set flow rate q2. At this time, the cold storage circulation system 300 is controlled to stop operating. This reduces the energy consumption of the air conditioner 1000 and also prevents the second circulation pump 240 from burning out due to dry pumping of air from the cold storage tank 100, thereby extending the service life of the second circulation pump 240.

[0134] Optionally, the set flow rate q2 can be zero. When the flow rate q1 is equal to the set flow rate q2, the conditions for ending the cold storage are met. At this point, all the water in the cold storage tank 100 has changed to ice, and the cold storage operation is complete.

[0135] According to an embodiment of the present invention, a computer-readable storage medium is provided thereon storing a control program for an air conditioner 1000, which, when executed by a processor, implements the control method for the air conditioner 1000 according to the above embodiment.

[0136] An air conditioner 1000 according to an embodiment of the present invention includes a memory, a processor, and a control program for the air conditioner 1000 stored in the memory and executable on the processor. When the processor executes the control program for the air conditioner 1000, it implements the control method for the air conditioner 1000 according to the above embodiment.

[0137] Other configurations and operations of the air conditioner 1000 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0138] In the description of this specification, references to terms such as "embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0139] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A control method for an air conditioner, characterized in that, The air conditioner includes a cold storage tank, a cold storage circulation system, and a cold release circulation system. The cold storage circulation system includes a condenser, an evaporator, and a compressor. The cold release circulation system includes a heat exchanger for heat extraction, a heat exchanger for heat release, and a first circulation pump. The evaporator and the heat exchanger for heat extraction are both located inside the cold storage tank. The air conditioner has a cold storage mode and a cold release mode. The control method includes the following steps: The cold storage cycle system is found to be operating in cold storage mode; Obtain the first temperature Ta of the heat exchanger that draws out the cold and the second temperature Tc of the heat exchanger that releases the cold. Determine whether the first antifreeze condition is met based on the first temperature Ta and the second temperature Tc. If the first antifreeze condition is met, the cooling circulation system is started and put into operation.

2. The control method for an air conditioner according to claim 1, characterized in that, The step of determining whether the first antifreeze condition is met based on the first temperature Ta and the second temperature Tc includes: Determine whether the first temperature Ta is less than or equal to the first preset temperature Tb; If so, determine that the first sub-condition of the first antifreeze condition is met; If the first sub-condition is satisfied, determine whether the second sub-condition of the first antifreeze condition is satisfied.

3. The control method for an air conditioner according to claim 2, characterized in that, The step of determining whether the second sub-condition of the first antifreeze condition is met includes: Determine whether the second temperature Tc is greater than or equal to the second preset temperature Td; If so, determine that the second sub-condition of the first antifreeze condition is met; If the second sub-condition is determined to be met, the cooling cycle system is started and operated.

4. The control method for an air conditioner according to claim 2, characterized in that, If it is determined that the first temperature Ta is greater than the first preset temperature Tb; Maintain the operating state of the cold storage cycle system, and continue to determine whether the first antifreeze condition is met based on the first temperature Ta and the second temperature Tc.

5. The control method for an air conditioner according to claim 3, characterized in that, The air conditioner also includes an air duct and a fan for ventilating the air duct. The condenser and the heat exchanger are both located in the air duct. The condenser is located upstream of the heat exchanger in the airflow path of the fan. If it is determined that the second temperature Tc is less than the second preset temperature Td; Adjust the operating frequency of the compressor and / or the speed of the fan to raise the temperature of the condenser.

6. The control method for an air conditioner according to claim 1, characterized in that, After the cooling cycle system is started and running, the following steps are also included: Based on the first temperature Ta, determine whether the second antifreeze condition is met; If the second antifreeze condition is determined to be met, the cooling circulation system is controlled to stop operating.

7. The control method for an air conditioner according to claim 6, characterized in that, The step of determining whether the second antifreeze condition is met based on the first temperature Ta includes: Determine whether the first temperature Ta is greater than or equal to the third preset temperature Te; If so, then the second antifreeze condition is met.

8. The control method for an air conditioner according to claim 6, characterized in that, If the second antifreeze condition is determined to be met, the compressor is also controlled to reduce its operating frequency.

9. The control method for an air conditioner according to any one of claims 1-8, characterized in that, The air conditioner further includes a second circulation pump, which is used to extract liquid from the bottom of the cold storage tank and pump it back to the cold storage tank. The control method further includes the following steps: Obtain the flow rate q1 of the second circulating pump; Based on the flow rate q1, determine whether the conditions for ending cold storage are met; If the conditions for ending cold storage are met, the cold storage cycle system is controlled to stop operating.

10. The control method for an air conditioner according to claim 9, characterized in that, The step of determining whether the end-of-cold-storage condition is met based on the flow rate q1 includes: Determine whether the flow rate q1 is less than or equal to the set flow rate q2; If so, confirm that the conditions for ending cold storage are met.

11. A computer-readable storage medium, characterized in that, It stores the control program of the air conditioner, which, when executed by the processor, implements the control method of the air conditioner according to any one of claims 1-10.

12. An air conditioner, characterized in that, The device includes a memory, a processor, and a control program for an air conditioner stored in the memory and executable on the processor. When the processor executes the control program for the air conditioner, it implements the control method for the air conditioner according to any one of claims 1-10.

Citation Information

Patent Citations

  • Air conditioner unit and evaporator anti-freezing method, device and system

    CN109028466A

  • Air conditioner and freezing-prevention control method thereof

    CN111189199A