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

Abstract

The invention discloses an air conditioner control method and device, an air conditioner and a storage medium, and the air conditioner control method comprises the steps that after the air conditioner is started in a heating mode, a first electromagnetic valve is started after the temperature of the inlet end of a heat exchange flow path of an outdoor heat exchanger triggers the opening condition of the first electromagnetic valve; after the first electromagnetic valve is opened, according to the temperature of the inlet end of the heat exchange flow path when the first electromagnetic valve is closed, the first interval duration between the time when the first electromagnetic valve is opened next time and the time when the first electromagnetic valve is closed is determined, and the first electromagnetic valve is opened after the first interval duration; and / or, according to the temperature of the inlet end of the heat exchange flow path when the first electromagnetic valve is closed, the first duration for opening the first electromagnetic valve next time is determined; the opening interval time and / or duration of the first electromagnetic valve can be adjusted according to the temperature of the inlet end of the heat exchange flow path of the outdoor heat exchanger, and then the outdoor heat exchanger is effectively defrosted in time when the outdoor heat exchanger is frosted.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioner equipment, and in particular to an air conditioner control method, device, air conditioner and storage medium. Background Art

[0002] Azeotropic refrigerant refers to a refrigerant composed of a mixture of two or more substances. Due to the different boiling points of its components, one component evaporates first and the other component evaporates later during evaporation, and the opposite is true during condensation, resulting in temperature changes during constant pressure phase change, which is the temperature slip phenomenon that non-azeotropic refrigerants will experience during evaporation or condensation; when the air conditioner is in heating mode, due to the temperature slip phenomenon, there will be a large temperature difference between the working fluid inlet and the working fluid outlet of the outdoor heat exchanger, that is, the temperature of the working fluid inlet is lower and the temperature of the working fluid outlet is higher, which makes it easy for frost and ice to form at the working fluid inlet, resulting in a decrease in the working efficiency of the outdoor heat exchanger. Summary of the invention

[0003] The main purpose of the embodiments of the present invention is to provide an air conditioning control method, device, air conditioner and storage medium, aiming to improve the technical problem in the prior art that the outdoor heat exchanger is prone to frost and ice due to the temperature slip of the non-azeotropic mixed refrigerant.

[0004] An embodiment of the present invention provides an air conditioning control method for controlling an air conditioner, the air conditioner comprising a compressor and an outdoor heat exchanger, a bypass branch being connected between the compressor and the outdoor heat exchanger, the outdoor heat exchanger having at least one heat exchange flow path, a first solenoid valve being arranged on the bypass branch, the air conditioner using a non-azeotropic mixed refrigerant, the air conditioning control method comprising:

[0005] After the air conditioner is turned on in the heating mode, the first solenoid valve is turned on after the temperature at the inlet end of the heat exchange flow path of the outdoor heat exchanger triggers the first solenoid valve opening condition;

[0006] After the first solenoid valve is opened, a first interval between the next opening of the first solenoid valve and the current closing of the first solenoid valve is determined according to the inlet end temperature of the heat exchange flow path when the first solenoid valve is closed, and the first solenoid valve is opened after the first interval has passed;

[0007] And / or, according to the inlet temperature of the heat exchange flow path when the first solenoid valve is closed, a first duration for opening the first solenoid valve next time is determined, and the first duration for opening the first solenoid valve next time is determined.

[0008] In some embodiments of the present invention, determining the first interval between the next opening of the first solenoid valve and the current closing of the first solenoid valve according to the inlet end temperature of the heat exchange flow path when the first solenoid valve is closed includes:

[0009] Determining a first adjustment amount according to the inlet temperature of the heat exchange flow path and the outdoor temperature;

[0010] The first interval duration is determined according to the first basic duration and the first adjustment amount.

[0011] In some embodiments of the present invention, determining the first adjustment amount according to the inlet temperature of the heat exchange flow path and the outdoor temperature includes:

[0012] When the temperature at the inlet end of the heat exchange flow path is greater than the first temperature and less than the second temperature, determining the first adjustment amount to be 0;

[0013] When the temperature at the inlet end of the heat exchange flow path is less than or equal to the first temperature or the temperature at the inlet end of the heat exchange flow path is greater than or equal to the second temperature, determining a first adjustment coefficient according to the outdoor temperature;

[0014] The first adjustment amount is determined according to the first adjustment coefficient and the inlet temperature of the heat exchange flow path.

[0015] In some embodiments of the present invention, determining the first duration of opening the first solenoid valve next time according to the inlet temperature of the heat exchange flow path when the first solenoid valve is closed includes:

[0016] Determining a second adjustment amount according to the inlet temperature of the heat exchange flow path and the outdoor temperature;

[0017] The first duration is determined according to the second basic duration and the second adjustment amount.

[0018] In some embodiments of the present invention, determining the second adjustment amount according to the inlet temperature of the heat exchange flow path and the outdoor temperature includes:

[0019] When the temperature at the inlet end of the heat exchange flow path is greater than the first temperature and less than the second temperature, determining the second adjustment amount to be 0;

[0020] When the temperature at the inlet end of the heat exchange flow path is less than or equal to the first temperature or the temperature at the inlet end of the heat exchange flow path is greater than or equal to the second temperature, determining a second adjustment coefficient according to the outdoor temperature;

[0021] The second adjustment amount is determined according to the second adjustment coefficient and the inlet temperature of the heat exchange flow path.

[0022] In some embodiments of the present invention, after the temperature at the inlet end of the heat exchange flow path of the outdoor heat exchanger triggers the first solenoid valve opening condition, opening the first solenoid valve comprises:

[0023] When it is determined that the inlet temperature of the heat exchange flow path is less than or equal to the first temperature, it is determined that the inlet temperature of the heat exchange flow path triggers the first solenoid valve opening condition, and the first solenoid valve is opened.

[0024] In some embodiments of the present invention, the air conditioning control method further includes:

[0025] When the outdoor ambient temperature is greater than or equal to a set temperature, the first solenoid valve is closed.

[0026] In some embodiments of the present invention, an air conditioning control device is also provided, comprising:

[0027] An acquisition module, used to acquire the inlet temperature of the heat exchange flow path of the outdoor heat exchanger;

[0028] A judgment module, used to judge whether the inlet temperature of the heat exchange flow path triggers the opening condition of the first solenoid valve;

[0029] A control module, for opening the first solenoid valve after the air conditioner is turned on in a heating mode and the temperature at the inlet end of the heat exchange path of the outdoor heat exchanger triggers the opening condition of the first solenoid valve; for determining, after opening the first solenoid valve, a first interval between the next opening of the first solenoid valve and the current closing of the first solenoid valve according to the temperature at the inlet end of the heat exchange path when the first solenoid valve is closed, and opening the first solenoid valve after the first interval; and for determining a first duration for the next opening of the first solenoid valve according to the temperature at the inlet end of the heat exchange path when the first solenoid valve is closed, and opening the first solenoid valve for the first duration the next time the first solenoid valve is opened.

[0030] In some embodiments of the present invention, an air conditioner is also provided, including a compressor, an outdoor heat exchanger, a memory and a processor, a bypass branch is connected between the compressor and the outdoor heat exchanger, the bypass branch is used to transport the refrigerant in the compressor to the heat exchange branch of the outdoor heat exchanger, the bypass branch is provided with a first solenoid valve that can control the conduction and closing of the bypass branch, the air conditioner uses a non-azeotropic mixed refrigerant, the memory stores a computer program, and the processor is used to run the computer program in the memory to execute the steps in the above-mentioned air conditioning control method.

[0031] In some embodiments of the present invention, a storage medium is further provided, wherein the storage medium stores a computer program, and the computer program is loaded and executed by a processor to execute the steps in the above-mentioned air conditioning control method.

[0032] An embodiment of the present invention provides an air-conditioning control method, device, air conditioner and storage medium. The air-conditioning control method is used to control the air conditioner. It connects a bypass branch between the compressor and the outdoor heat exchanger, and after triggering the opening condition of the first solenoid valve on the bypass branch, adjusts the opening interval and / or duration of the first solenoid valve according to the inlet end temperature of the heat exchange flow path of the outdoor heat exchanger after the first solenoid valve is closed, so as to timely and effectively defrost the outdoor heat exchanger when the non-azeotropic refrigerant temperature slips and causes frost on the outdoor heat exchanger, and at the same time avoids excessive opening of the first solenoid valve when the outdoor heat exchanger does not need to be defrosted, thereby avoiding affecting the heating performance of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0034] Figure 1 A schematic flow chart of an air conditioning control method according to an embodiment of the present invention;

[0035] Figure 2 A schematic diagram of the structure of an air conditioning control device according to an embodiment of the present invention;

[0036] Figure 3 A schematic diagram of the structure of an air conditioner according to an embodiment of the present invention;

[0037] Figure 4 The figure is a schematic diagram of the connection structure between the compressor and the outdoor heat exchanger of an air conditioner according to an embodiment of the present invention.

[0038] Figure numerals: 10, air conditioning control device; 100, acquisition module; 200, judgment module; 300, control module; 400, outdoor heat exchanger; 410, bypass branch; 411, first solenoid valve; 500, compressor; 601, processor; 602, memory; 603, power supply; 604, input unit. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] like Figure 1-Figure 4 As shown, the present invention provides an air conditioning control method for controlling an air conditioner, the air conditioner comprising a compressor 500 and an outdoor heat exchanger 400, a bypass branch 410 is connected between the compressor 500 and the outdoor heat exchanger 400, at least one heat exchange flow path is provided in the outdoor heat exchanger 400, the bypass branch 410 is used to transport the refrigerant in the compressor 500 to the outdoor heat exchanger 400, and a first solenoid valve 411 that can control the conduction and closing of the bypass branch 410 is provided on the bypass branch 410, the air conditioner adopts a non-azeotropic mixed refrigerant, and the air conditioning control method comprises:

[0044] S100, after the air conditioner is turned on in the heating mode, the first solenoid valve 411 is opened after the inlet temperature of the heat exchange flow path of the outdoor heat exchanger 400 triggers the opening condition of the first solenoid valve 411.

[0045] Among them, when the first solenoid valve 411 is opened, the bypass branch 410 is connected, and the high-temperature refrigerant in the compressor 500 can enter the outdoor heat exchanger 400 through the bypass branch 410; when the first solenoid valve 411 is closed, the bypass branch 410 is closed, and the high-temperature refrigerant in the compressor 500 cannot enter the outdoor heat exchanger 400 through the bypass branch 410.

[0046] Among them, the inlet temperature of the heat exchange flow path is generally the temperature near the inlet of the heat exchange flow path. For example, the temperature sensor can be set at the first U-shaped pipe section of the heat exchange tube close to the inlet to obtain the inlet temperature of the heat exchange flow path.

[0047] Generally, when the temperature at the inlet end of the heat exchange flow path is less than or equal to 0° C., it is determined that the temperature at the inlet end of the heat exchange flow path triggers the opening condition of the first solenoid valve 411 .

[0048] Among them, due to the characteristics of non-azeotropic refrigerant, when temperature slip occurs, the tube temperature of the entire heat exchange flow path generally increases gradually from the inlet to the outlet, that is, the temperature at the inlet end of the heat exchange flow path is the lowest. Therefore, it is necessary to judge whether the outdoor heat exchanger 400 needs to be defrosted based on the temperature at the inlet end of the heat exchange flow path.

[0049] S200, after opening the first solenoid valve 411, determine the first interval time between the next opening of the first solenoid valve 411 and the current closing of the first solenoid valve 411 according to the inlet temperature of the heat exchange flow path when the first solenoid valve 411 is closed, and open the first solenoid valve 411 after the first interval time.

[0050] Among them, after the air conditioner is turned on in the heating mode, the first solenoid valve 411 needs to be triggered to open for the first time by the inlet temperature of the heat exchange flow path. After the first solenoid valve 411 is opened for the first time, the opening time of the first solenoid valve 411 is determined according to the inlet temperature of the heat exchange flow path, that is, the first interval time between the next opening of the first solenoid valve 411 and the current closing of the first solenoid valve 411 is determined according to the inlet temperature of the heat exchange flow path when the first solenoid valve 411 is closed.

[0051] Among them, the first interval between the next opening of the first solenoid valve 411 and the current closing of the first solenoid valve 411 is determined according to the inlet temperature of the heat exchange flow path when the first solenoid valve 411 is closed. Generally, if the inlet temperature of the heat exchange flow path is lower, the first interval is shorter, and if the inlet temperature of the heat exchange flow path is higher, the first interval is longer.

[0052] And / or, S300, determining a first duration for opening the first solenoid valve 411 next time according to the inlet temperature of the heat exchange path when the first solenoid valve 411 is closed, and opening the first solenoid valve 411 for the first duration next time.

[0053] The longer the first duration is, the longer the opening time of the first solenoid valve is, and the better the defrosting effect on the outdoor heat exchanger is. Therefore, the opening time of the first solenoid valve 411 can be adaptively adjusted according to the frosting condition of the outdoor heat exchanger.

[0054] The control method of the air conditioner may adopt both S200 and S300 at the same time, or may adopt only one of S200 and S300 according to the situation.

[0055] It can be understood that the air-conditioning control method connects a bypass branch 410 between the compressor 500 and the outdoor heat exchanger 400, and after triggering the opening condition of the first solenoid valve 411 on the bypass branch 410, adjusts the opening interval time and / or duration of the first solenoid valve 411 according to the inlet end temperature of the heat exchange flow path of the outdoor heat exchanger 400, thereby timely and effectively defrosting the outdoor heat exchanger 400 when the outdoor heat exchanger 400 is frosted, and at the same time avoids excessive opening of the first solenoid valve when the outdoor heat exchanger 400 does not need to be defrosted, thereby avoiding affecting the heating performance of the air conditioner.

[0056] In some embodiments, S200, according to the inlet temperature of the heat exchange flow path when the first solenoid valve 411 is closed, determining the first interval between the next opening of the first solenoid valve 411 and the current closing of the first solenoid valve 411 includes:

[0057] S210, determining a first adjustment amount according to the inlet temperature of the heat exchange flow path and the outdoor temperature.

[0058] The first adjustment amount is determined according to the outdoor temperature and the inlet temperature of the heat exchange flow path, and can directly affect the first interval duration.

[0059] S220: Determine a first interval duration according to the first basic duration and the first adjustment amount.

[0060] Among them, when the air conditioner is turned on in heating mode for a preset time, the air conditioner is in the initial operation, and the temperature slip phenomenon of the non-azeotropic refrigerant has little effect on the coil of the outdoor heat exchanger 400. Therefore, the first basic time is generally longer, and the value is generally 10 minutes.

[0061] Among them, the first interval duration is t 1间 , the first basic duration is t 1基 , the first adjustment amount is h; then the first interval duration is t 1间 =t 1基 +h.

[0062] Among them, that is, t 1间 =10+h, that is, t 1间 The unit is minutes.

[0063] In some embodiments, S210, determining a first adjustment amount according to the inlet temperature of the heat exchange flow path and the outdoor temperature includes:

[0064] S211, when the inlet temperature of the heat exchange flow path is greater than the first temperature and less than the second temperature, determine the first adjustment amount to be 0.

[0065] Among them, the first temperature is generally 0°C and the second temperature is 4.

[0066] Specifically, when the temperature when the first solenoid valve 411 is closed is greater than 0°C and less than 4°C, such as 2°C, the first adjustment amount is determined to be 0, that is, h=0, and the first interval duration is the first basic duration.

[0067] S212, when the temperature at the inlet end of the heat exchange flow path is less than or equal to the first temperature or the temperature at the inlet end of the heat exchange flow path is greater than or equal to the second temperature, determining a first adjustment coefficient according to the outdoor temperature.

[0068] Among them, the first adjustment coefficient is k1, and the value of k1 is related to the outdoor temperature and the inlet temperature of the heat exchange flow path. Generally, a plurality of outdoor temperature ranges are stored in the controller of the air conditioner, and each temperature range corresponds to a different first adjustment coefficient. Among them, for the same outdoor temperature range, the inlet temperature of the heat exchange flow path is less than or equal to the first temperature and the inlet temperature of the heat exchange flow path is greater than or equal to the second temperature, which correspond to different first adjustment coefficients respectively.

[0069] The corresponding relationship between the first adjustment coefficient and the outdoor temperature can be found in the following table:

[0070]

[0071]

[0072] Among them, k1 is the first adjustment coefficient, T 盘管 is the inlet temperature of the heat exchange flow path of the outdoor heat exchanger 400, T 室外 is the outdoor temperature, T 第一 is the first temperature, T 第二 is the second temperature; generally, T 第一 =0℃, T 第二 4℃.

[0073] S213, determining a first adjustment amount according to the first adjustment coefficient and the inlet temperature of the heat exchange flow path.

[0074] Wherein, determining the first adjustment amount according to the first adjustment coefficient and the inlet temperature of the heat exchange flow path includes:

[0075] When the inlet temperature of the heat exchange flow path is less than or equal to the first temperature, a first difference between the inlet temperature of the heat exchange flow path and the first temperature is determined, and then a first adjustment amount is determined based on the first difference and the first adjustment coefficient.

[0076] Specifically: h = k1*|T 盘管 -T 第一 |, that is, h = k1*|(T 盘管 -0)|.

[0077] When the inlet temperature of the heat exchange flow path is greater than or equal to the second temperature, a second difference between the inlet temperature of the heat exchange flow path and the second temperature is determined, and then a first adjustment amount is determined based on the second difference and the first adjustment coefficient.

[0078] Specifically: h = k1*|T 盘管 -T 第二 |, that is, h = k1*|T 盘管 -4|.

[0079] For example, when the outdoor temperature is 5°C and the inlet temperature of the heat exchange path is -1°C, k1 = -1, h = -1*|-1-0|=-1, then the first interval duration is: t 1间 =10+h=10-1=9, that is, the first interval is 9 minutes.

[0080] For example, when the outdoor temperature is -5°C and the inlet temperature of the heat exchange path is 6°C, k1 = 1, h = 1*|6-4| = 2, then the first interval duration is: t 1间 =10+h=10+2=12, that is, the first interval duration is 12 minutes.

[0081] In some embodiments, when it is determined that the first interval time is less than the first standard time, the first solenoid valve 411 is fully opened, and after the first time interval, the temperature is determined again according to the inlet temperature of the heat exchange flow path, and the above steps are repeated. For example, if the first standard time is 0.5 minutes and the first time is 1 minute, when the first interval time is determined to be 0.4 minutes, the first solenoid valve 411 is continuously fully opened, and after the first time interval is 1 minute, the first interval time is determined again according to the inlet temperature of the heat exchange flow path. If the first interval time is still determined to be 0.4 minutes, the above steps are repeated.

[0082] Generally, the first standard time length and the first time length are time data pre-stored in the air conditioner controller.

[0083] In some embodiments, the air conditioning control method further includes:

[0084] In some embodiments, S300, according to the inlet temperature of the heat exchange flow path when the first solenoid valve 411 is closed, determining the first duration of opening the first solenoid valve 411 next time includes:

[0085] S310, determining a second adjustment amount according to the inlet temperature of the heat exchange flow path and the outdoor temperature.

[0086] The second adjustment amount is determined according to the outdoor temperature and the inlet temperature of the heat exchange flow path, and can directly affect the first duration of the opening of the first solenoid valve 411 .

[0087] S320: Determine the first duration according to the second basic duration and the second adjustment amount.

[0088] Among them, generally speaking, the second basic duration is generally shorter, usually taking a value of 20 seconds.

[0089] Among them, the first duration is t 持续 , the second basic duration is t 2基 , the second adjustment amount is m; then the first duration is t 持续 =t 2基 +m.

[0090] Among them, that is, t 持续 =20+m, that is, t 2间 The unit is seconds.

[0091] In some embodiments, S310, determining a second adjustment amount for a second time period according to the inlet temperature of the heat exchange flow path and the outdoor temperature includes:

[0092] S311, when the inlet temperature of the heat exchange flow path is greater than the first temperature and less than the second temperature, determine the second adjustment amount to be 0.

[0093] Among them, the first temperature is generally 0°C, and the second temperature is generally 4°C.

[0094] That is, when the temperature when the first solenoid valve 411 is closed is greater than 0°C and less than 4°C, such as 2°C, the second adjustment amount is determined to be 0, that is, m=0, and the first duration is the second basic duration.

[0095] S312, when the temperature at the inlet end of the heat exchange flow path is less than or equal to the first temperature or the temperature at the inlet end of the heat exchange flow path is greater than or equal to the second temperature, determining a second adjustment coefficient according to the outdoor temperature.

[0096] Among them, the second adjustment coefficient is k2, and the value of k2 is related to the outdoor temperature and the inlet temperature of the heat exchange flow path. Generally, a plurality of outdoor temperature ranges are stored in the controller of the air conditioner, and each temperature range corresponds to a different second adjustment coefficient. Among them, for the same outdoor temperature range, the inlet temperature of the heat exchange flow path is less than or equal to the first temperature and the inlet temperature of the heat exchange flow path is greater than or equal to the second temperature, which correspond to different second adjustment coefficients respectively.

[0097] The corresponding relationship between the second adjustment coefficient and the outdoor temperature can be found in the following table:

[0098]

[0099]

[0100] Among them, k2 is the first adjustment coefficient, T 盘管 is the inlet temperature of the heat exchange flow path of the outdoor heat exchanger 400, T 室外 is the outdoor temperature, T 第一 is the first temperature, T 第二 is the second temperature; generally, T 第一 =0℃, T 第二 4℃

[0101] S313, determining a second adjustment amount according to the second adjustment coefficient and the inlet temperature of the heat exchange flow path.

[0102] Wherein, determining the second adjustment amount according to the second adjustment coefficient and the inlet temperature of the heat exchange flow path includes:

[0103] When the inlet temperature of the heat exchange flow path is less than or equal to the first temperature, a first difference between the inlet temperature of the heat exchange flow path and the first temperature is determined, and then a second adjustment amount is determined according to the first difference and the second adjustment coefficient.

[0104] Specifically: m = k2*|T 盘管 -T 第一 |, that is, m = k2*|T 盘管 -0|.

[0105] When the inlet temperature of the heat exchange flow path is greater than or equal to the second temperature, a second difference between the inlet temperature of the heat exchange flow path and the second temperature is determined, and then a second adjustment amount is determined according to the second difference and the second adjustment coefficient.

[0106] Specifically: m = k2*|T 盘管 -T 第二 |, that is, h = k1*|T 盘管 -4|.

[0107] For example, when the outdoor temperature is 5°C and the inlet temperature of the heat exchange path is -1°C, k2 = 1, m = 1*|-1-0|=1, then the first duration is: t 持续 =20+m=20+1=21, that is, the first duration is 21 seconds.

[0108] For example, when the outdoor temperature is -5°C and the inlet temperature of the heat exchange path is 6°C, k2 = -1, m = -1*|-1-0|=-1, then the first duration is: t 持续=20+m=20-1=19, that is, the first duration is 19 seconds.

[0109] In some embodiments, when it is determined that the first duration is less than the second standard duration, the first solenoid valve 411 is closed, and after the second duration is exceeded, the first duration is determined again according to the inlet temperature of the heat exchange flow path, and if it is determined again that the first duration is less than the second standard duration, the above steps are repeated. For example, the second standard duration is 3 seconds and the second duration is 1 minute. When the first duration is determined to be 2 seconds, the first solenoid valve 411 is closed, and after the second minute is exceeded, the first duration is determined again according to the inlet temperature of the heat exchange flow path, and if it is determined again that the first duration is 2 seconds, the above steps are repeated.

[0110] The second standard time length and the second time length are time data pre-stored in the air conditioner controller.

[0111] That is, by continuously adjusting the first opening duration of the first solenoid valve 411 through the inlet temperature of the heat exchange flow path and the outdoor temperature, it is possible to ensure that the coil of the outdoor heat exchanger 400 avoids frosting. At the same time, when the high-temperature refrigerant of the compressor 500 does not need to be introduced for a long time, the first opening duration of the first solenoid valve 411 is shortened, thereby avoiding affecting the heating performance of the air conditioner.

[0112] In some embodiments, S100, after the inlet temperature of the heat exchange flow path of the outdoor heat exchanger 400 triggers the opening condition of the first solenoid valve 411, opening the first solenoid valve 411 includes:

[0113] When it is determined that the inlet temperature of the heat exchange flow path is less than or equal to the first temperature, it is determined that the inlet temperature of the heat exchange flow path triggers the opening condition of the first solenoid valve 411, and the first solenoid valve 411 is opened.

[0114] The first temperature is 0°C. When the inlet temperature of the heat exchange flow path is less than or equal to 0°C, it means that the inlet temperature of the heat exchange flow path is at a temperature that is more prone to frost, and therefore the first solenoid valve 411 needs to be opened.

[0115] In some embodiments, the air conditioning control method further includes:

[0116] S400: When the outdoor ambient temperature is greater than or equal to the set temperature, close the first solenoid valve 411. 。

[0117] Among them, the set temperature is the temperature pre-stored in the controller of the air conditioner, and the set temperature is generally determined by the composition of the non-azeotropic refrigerant temperature. It can be understood that the minimum temperature of the non-azeotropic refrigerant temperature slip can be determined according to the composition of the non-azeotropic refrigerant. When the minimum temperature of the non-azeotropic refrigerant temperature slip is determined, the set temperature can be determined.

[0118] If the minimum temperature of the temperature glide of the non-azeotropic refrigerant in the air conditioner is -7°C, the set temperature is 10°C. At this time, the minimum temperature of the inlet end of the heat exchange flow path is -7°C. However, when the outdoor ambient temperature is 10°C, the outdoor heat exchanger will also slow down the frosting speed or not frost if the first solenoid valve is not opened.

[0119] In some embodiments, the present invention further provides an air conditioning control device 10, comprising an acquisition module 100, a judgment module 200 and a control module 300. The acquisition module 100 is used to acquire the inlet temperature of the heat exchange flow path of the outdoor heat exchanger 400. The judgment module 200 is used to judge whether the inlet temperature of the heat exchange flow path triggers the opening condition of the first solenoid valve 411. The control module 300 is used to open the first solenoid valve 411 for a first set time after the air conditioner is turned on in the heating mode if the inlet temperature of the heat exchange flow path of the outdoor heat exchanger 400 triggers the opening condition of the first solenoid valve 411. The control module 300 is also used to determine the first interval time between the next opening of the first solenoid valve 411 and the current closing of the first solenoid valve 411 according to the inlet temperature of the heat exchange flow path when the first solenoid valve 411 is closed after the first solenoid valve 411 is opened, and open the first solenoid valve 411 after the first interval time. The control module is also used to determine the first duration of opening the first solenoid valve 411 next time according to the inlet temperature of the heat exchange flow path when the first solenoid valve 411 is closed, and to open the first solenoid valve 411 for the first duration next time.

[0120] The acquisition module 100 may be a temperature sensor, which is generally disposed near the inlet of the heat exchange flow path and is used to acquire the inlet temperature of the heat exchange flow path.

[0121] In some embodiments, the present invention also provides an air conditioner, which may include components such as a processor 601 with one or more processing cores, a memory 602 with one or more computer-readable storage media, a power supply 603, and an input unit 604. The air conditioner also includes a compressor 500 and an outdoor heat exchanger 400. A bypass branch 410 is connected between the compressor 500 and the outdoor heat exchanger 400. The bypass branch 410 is used to transport the refrigerant in the compressor 500 to the heat exchange branch of the outdoor heat exchanger 400. The bypass branch 410 is provided with a first solenoid valve 411 that can control the conduction and closing of the bypass branch 410. The air conditioner uses a non-azeotropic mixed refrigerant. Those skilled in the art can understand that the structure of the above-mentioned air conditioner does not constitute a limitation on the air conditioner, and may include more or fewer components, or a combination of certain components, or different component arrangements. Among them:

[0122] The processor 601 is the controller of the air conditioner, and uses various interfaces and lines to connect various parts of the entire air conditioner. By running or executing software programs and / or modules stored in the memory 602, and calling data stored in the memory 602, the processor 601 performs various functions of the air conditioner and processes data, thereby monitoring the air conditioner as a whole. Optionally, the processor 601 may include one or more processing cores; preferably, the processor 601 may integrate an application processor 601 and a modem processor 601, wherein the application processor 601 mainly processes the operating system, user interface and computer programs, etc., and the modem processor 601 mainly processes wireless communications. It is understandable that the above-mentioned modem processor 601 may not be integrated into the processor 601.

[0123] The memory 602 can be used to store software programs and modules. The processor 601 executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, a computer program required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the server, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory may also include a memory controller to provide the processor 601 with access to the memory.

[0124] The air conditioner also includes a power supply 603 for supplying power to each component. Preferably, the power supply 603 can be logically connected to the processor 601 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. The power supply can also include any components such as one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators.

[0125] The air conditioner may further include an input unit 604, which may be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0126] Although not shown, the air conditioner may further include a display unit, etc., which will not be described in detail herein. Specifically, in this embodiment, the processor 601 in the air conditioner will load the executable files corresponding to the processes of one or more computer programs into the memory 602 according to the following instructions, and the processor 601 will run the computer programs stored in the memory 602 to perform the following steps:

[0127] After the air conditioner is turned on in the heating mode, if the inlet temperature of the heat exchange flow path of the outdoor heat exchanger 400 triggers the opening condition of the first solenoid valve 411, the first solenoid valve 411 is opened for a first set time;

[0128] After the first solenoid valve 411 is opened, the first interval between the next opening of the first solenoid valve 411 and the current closing of the first solenoid valve 411 is determined according to the inlet temperature of the heat exchange flow path when the first solenoid valve 411 is closed, and the first solenoid valve 411 is opened after the first interval.

[0129] By executing the above steps, the opening interval of the first solenoid valve 411 is adjusted according to the inlet temperature of the heat exchange flow path of the outdoor heat exchanger 400, so that the outdoor heat exchanger 400 is defrosted in a timely and effective manner when frosted, and at the same time, the outdoor heat exchanger 400 is prevented from being opened too much when defrosting is not needed, thereby preventing the heating performance of the air conditioner from being affected.

[0130] A person skilled in the art will appreciate that all or part of the steps in any of the methods in the above embodiments may be completed by a computer program, or by controlling related hardware through a computer program. The computer program may be stored in a computer-readable storage medium and loaded and executed by the processor 601.

[0131] In some embodiments, the present invention further provides a storage medium, the storage medium stores a computer program, and the computer program is loaded and executed by a processor to perform the following steps:

[0132] After the air conditioner is turned on in the heating mode, if the inlet temperature of the heat exchange flow path of the outdoor heat exchanger 400 triggers the opening condition of the first solenoid valve 411, the first solenoid valve 411 is opened for a first set time;

[0133] After the first solenoid valve 411 is opened, the first interval between the next opening of the first solenoid valve 411 and the current closing of the first solenoid valve 411 is determined according to the inlet temperature of the heat exchange flow path when the first solenoid valve 411 is closed, and the first solenoid valve 411 is opened after the first interval.

[0134] By executing the above steps, the opening interval of the first solenoid valve 411 is adjusted according to the inlet temperature of the heat exchange flow path of the outdoor heat exchanger 400, so that the outdoor heat exchanger 400 is defrosted in a timely and effective manner when frosted, and at the same time, the outdoor heat exchanger 400 is prevented from being opened too much when defrosting is not needed, thereby preventing the heating performance of the air conditioner from being affected.

[0135] It will be appreciated by those skilled in the art that any reference to memory, storage, database or other medium used in the embodiments provided by the present invention may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink), DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0136] Since the computer program stored in the storage medium can execute the steps in the air conditioner air conditioning control method in any embodiment provided by the present invention, the beneficial effects that can be achieved by the air conditioner air conditioning control method in any embodiment provided by the present invention can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0137] The specific implementation of the above operations can be found in the previous embodiments, which will not be described in detail here.

[0138] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the detailed description of other embodiments above, and will not be repeated here.

[0139] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, within the application concept of the present invention are included in the patent protection scope of the present invention.

Claims

1. An air conditioning control method, characterized in that: The method is used to control an air conditioner, the air conditioner comprising a compressor and an outdoor heat exchanger, a bypass branch is connected between the compressor and the outdoor heat exchanger, the outdoor heat exchanger has at least one heat exchange flow path, a first solenoid valve is arranged on the bypass branch, the air conditioner adopts a non-azeotropic mixed refrigerant, and the air conditioning control method comprises: After the air conditioner is turned on in the heating mode, the first solenoid valve is turned on after the temperature at the inlet end of the heat exchange flow path triggers the first solenoid valve opening condition; After the first solenoid valve is opened, a first interval between the next opening of the first solenoid valve and the current closing of the first solenoid valve is determined according to the inlet end temperature of the heat exchange flow path when the first solenoid valve is closed, and the first solenoid valve is opened after the first interval has passed; And / or, according to the inlet temperature of the heat exchange flow path when the first solenoid valve is closed, a first duration for opening the first solenoid valve next time is determined, and the first duration for opening the first solenoid valve next time is determined.

2. The air conditioning control method according to claim 1, characterized in that: The determining, according to the inlet end temperature of the heat exchange flow path when the first solenoid valve is closed, a first interval between the next opening of the first solenoid valve and the current closing of the first solenoid valve comprises: Determining a first adjustment amount according to the inlet temperature of the heat exchange flow path and the outdoor temperature; The first interval duration is determined according to the first basic duration and the first adjustment amount.

3. The air conditioning control method according to claim 2, characterized in that: The determining of the first adjustment amount according to the inlet temperature of the heat exchange flow path and the outdoor temperature includes: When the temperature at the inlet end of the heat exchange flow path is greater than the first temperature and less than the second temperature, determining the first adjustment amount to be 0; When the temperature at the inlet end of the heat exchange flow path is less than or equal to the first temperature or the temperature at the inlet end of the heat exchange flow path is greater than or equal to the second temperature, determining a first adjustment coefficient according to the outdoor temperature; The first adjustment amount is determined according to the first adjustment coefficient and the inlet temperature of the heat exchange flow path.

4. The air conditioning control method according to claim 1, characterized in that: The determining, according to the inlet end temperature of the heat exchange flow path when the first solenoid valve is closed, a first duration of opening the first solenoid valve next time comprises: Determining a second adjustment amount according to the inlet temperature of the heat exchange flow path and the outdoor temperature; The first duration is determined according to the second basic duration and the second adjustment amount.

5. The air conditioning control method according to claim 4, characterized in that: The determining the second adjustment amount according to the inlet temperature of the heat exchange flow path and the outdoor temperature includes: When the temperature at the inlet end of the heat exchange flow path is greater than the first temperature and less than the second temperature, determining the second adjustment amount to be 0; When the temperature at the inlet end of the heat exchange flow path is less than or equal to the first temperature or the temperature at the inlet end of the heat exchange flow path is greater than or equal to the second temperature, determining a second adjustment coefficient according to the outdoor temperature; The second adjustment amount is determined according to the second adjustment coefficient and the inlet temperature of the heat exchange flow path.

6. The air conditioning control method according to claim 1, characterized in that: After the temperature at the inlet end of the heat exchange flow path of the outdoor heat exchanger triggers the first solenoid valve opening condition, opening the first solenoid valve comprises: When it is determined that the inlet temperature of the heat exchange flow path is less than or equal to the first temperature, it is determined that the inlet temperature of the heat exchange flow path triggers the first solenoid valve opening condition, and the first solenoid valve is opened.

7. The air conditioning control method according to claim 1, characterized in that: The air conditioning control method further includes: When the outdoor ambient temperature is greater than or equal to a set temperature, the first solenoid valve is closed.

8. An air conditioning control device, characterized in that: include: An acquisition module, used to acquire the inlet temperature of the heat exchange flow path of the outdoor heat exchanger; A judgment module, used to judge whether the inlet temperature of the heat exchange flow path triggers the opening condition of the first solenoid valve; A control module, for opening the first solenoid valve after the air conditioner is turned on in a heating mode and the temperature at the inlet end of the heat exchange path of the outdoor heat exchanger triggers the opening condition of the first solenoid valve; for determining, after opening the first solenoid valve, a first interval between the next opening of the first solenoid valve and the current closing of the first solenoid valve according to the temperature at the inlet end of the heat exchange path when the first solenoid valve is closed, and opening the first solenoid valve after the first interval; and for determining a first duration for the next opening of the first solenoid valve according to the temperature at the inlet end of the heat exchange path when the first solenoid valve is closed, and opening the first solenoid valve for the first duration the next time the first solenoid valve is opened.

9. An air conditioner, characterized in that: The air conditioner comprises a compressor, an outdoor heat exchanger, a memory and a processor, wherein a bypass branch is connected between the compressor and the outdoor heat exchanger, and the bypass branch is used to transport the refrigerant in the compressor to the heat exchange branch of the outdoor heat exchanger, and a first solenoid valve which can control the conduction and closing of the bypass branch is arranged on the bypass branch, and the air conditioner adopts a non-azeotropic mixed refrigerant, and the memory stores a computer program, and the processor is used to run the computer program in the memory to execute the steps in the air conditioning control method described in any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium stores a computer program, and the computer program is loaded and executed by the processor to execute the steps in the air conditioning control method according to any one of claims 1 to 7.

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