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

Abstract

The invention discloses a control method, device and equipment of an air conditioner and a storage medium, and belongs to the technical field of air conditioners. An exhaust port and an air return port of a compressor are both connected with a reversing valve, and two ports of the reversing valve are connected with an outdoor heat exchanger and an indoor heat exchanger correspondingly; the throttling device, the plate heat exchanger and the ejector are sequentially connected between the outdoor heat exchanger and the indoor heat exchanger, one port of the plate heat exchanger is connected with a high-pressure medium inlet of the ejector, and one port of the plate heat exchanger is connected with a low-pressure medium inlet of the ejector and an enthalpy spraying opening of the compressor. The outdoor environment temperature and the indoor environment temperature are obtained, the working mode of the air conditioner is adjusted according to the outdoor environment temperature and the indoor environment temperature, the evaporator obtains the saturated refrigerant liquid state, it is guaranteed that flow paths of the evaporator are evenly distributed, and the heat exchange effect is improved.

Description

Technical Field

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

[0002] The current air conditioning system heat exchanger often uses a split capillary for splitting, and designers need to spend a lot of time to adjust the heat exchanger to make the split flow uniform and obtain the best heat exchange effect. The current technical solution has the defects of complex adjustment and poor consistency, resulting in uneven liquid distribution in the final evaporator, which reduces the heat exchange effect.

[0003] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the present invention is to provide a control method, an air conditioner, a device, an equipment and a storage medium for an air conditioner, aiming to solve the technical problem of uneven liquid distribution in the evaporator in the prior art, which reduces the heat exchange effect.

[0005] To achieve the above-mentioned purpose, the present invention provides an air conditioner, which includes a compressor, a reversing valve, an ejector, a throttling device, a plate heat exchanger, an indoor heat exchanger and an outdoor heat exchanger; the exhaust port and the return air port of the compressor are both connected to the reversing valve, and the two ports of the reversing valve are respectively connected to the outdoor heat exchanger and the indoor heat exchanger; the throttling device, the plate heat exchanger and the ejector are connected in sequence between the outdoor heat exchanger and the indoor heat exchanger, the two ports of the plate heat exchanger are both connected to the throttling device, one port of the plate heat exchanger is connected to the high-pressure medium inlet of the ejector, and one port of the plate heat exchanger is connected to the low-pressure medium inlet of the ejector and the spray enthalpy port of the compressor.

[0006] Optionally, the air conditioner further comprises a control valve, wherein the control valve is arranged between a port of the plate heat exchanger and the throttling device, and the control valve comprises any one of a throttling device, an electronic expansion valve and a flow regulating valve.

[0007] Optionally, the air conditioner also includes a switching valve, which connects a port of the plate heat exchanger, the low-pressure medium inlet of the ejector and the enthalpy spray port of the compressor, and the switching valve can selectively connect a port of the plate heat exchanger with the low-pressure medium inlet of the ejector, and connect a port of the plate heat exchanger with the enthalpy spray port of the compressor.

[0008] To achieve the above object, the present invention further provides a method for controlling an air conditioner, the method for controlling an air conditioner being applied to any of the above air conditioners, the method for controlling an air conditioner comprising:

[0009] When the air conditioner is in cooling mode, obtaining the outdoor ambient temperature and the indoor ambient temperature;

[0010] The working mode of the air conditioner is adjusted according to the outdoor ambient temperature and the indoor ambient temperature.

[0011] Optionally, adjusting the working mode of the air conditioner according to the outdoor ambient temperature and the indoor ambient temperature includes:

[0012] determining a temperature difference between a set temperature and the indoor ambient temperature;

[0013] When the outdoor ambient temperature is greater than a preset temperature and the temperature difference is greater than a temperature difference threshold, the operating mode of the air conditioner is adjusted to an enthalpy injection mode, wherein when the air conditioner is in the enthalpy injection mode, a port of the plate heat exchanger is connected to the enthalpy injection port of the compressor.

[0014] Optionally, the control method of the air conditioner includes:

[0015] When the outdoor ambient temperature is less than or equal to a preset temperature and the temperature difference is less than or equal to a temperature difference threshold, the operating mode of the air conditioner is adjusted to the ejection mode, wherein when the air conditioner is in the ejection mode, one port of the plate heat exchanger is connected to the low-pressure medium inlet of the ejector.

[0016] Optionally, the air conditioner further comprises a control valve, wherein the control valve is arranged between a port of the plate heat exchanger and the throttling device, and the control method of the air conditioner comprises:

[0017] When the air conditioner is operated in the induced mode, obtaining the middle temperature of the indoor evaporator and the outlet temperature of the plate heat exchanger;

[0018] The opening degree of the control valve is determined according to the middle temperature of the indoor evaporator and the outlet temperature of the plate heat exchanger.

[0019] The present invention provides a control device for an air conditioner, characterized in that the control device for the air conditioner comprises:

[0020] An acquisition module, used for acquiring the outdoor ambient temperature and the indoor ambient temperature when the air conditioner is in a cooling mode;

[0021] The control module is used to adjust the working mode of the air conditioner according to the outdoor ambient temperature and the indoor ambient temperature.

[0022] In addition, to achieve the above-mentioned purpose, the present invention also proposes a control device for an air conditioner, which includes: a memory, a processor, and a control program for the air conditioner stored in the memory and running on the processor, and the control program for the air conditioner is configured to implement the control method for the air conditioner as described above.

[0023] In addition, to achieve the above-mentioned purpose, the present invention further proposes a storage medium, on which a control program of an air conditioner is stored. When the control program of the air conditioner is executed by a processor, the control method of the air conditioner as described above is implemented.

[0024] The exhaust port and return air port of the compressor in the present invention are both connected to the reversing valve, and the two ports of the reversing valve are respectively connected to the outdoor heat exchanger and the indoor heat exchanger; the throttling device, the plate heat exchanger and the ejector are connected between the outdoor heat exchanger and the indoor heat exchanger in sequence, one port of the plate heat exchanger is connected to the high-pressure medium inlet of the ejector, and one port of the plate heat exchanger is connected to the low-pressure medium inlet of the ejector and the spray enthalpy port of the compressor. When the air conditioner is in cooling mode, the outdoor ambient temperature and the indoor ambient temperature are obtained, and the working mode of the air conditioner is adjusted according to the outdoor ambient temperature and the indoor ambient temperature, so that the evaporator obtains a saturated refrigerant liquid state, ensuring that the evaporator flow path is evenly distributed and the heat exchange effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a control device of an air conditioner in a hardware operating environment involved in an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of a flow chart of a first embodiment of a method for controlling an air conditioner according to the present invention;

[0027] Figure 3 A schematic flow chart of a second embodiment of a method for controlling an air conditioner according to the present invention;

[0028] Figure 4 is a structural block diagram of a first embodiment of an air conditioner of the present invention;

[0029] Figure 5 FIG. 1 is a structural block diagram of a first embodiment of a control device for an air conditioner according to the present invention.

[0030] Description of Reference Numerals

[0031] 1 Three-way valve inlet 10 Second throttle valve 2 Three-way valve first outlet 11 Solenoid valve 3 Three-way valve second outlet 12 Plate Heat Exchanger 4 compressor 13 Three-way valve 5 Inlet 14 Ejector 6 Spray enthalpy 15 High pressure medium inlet 7 Gas-Liquid Separator 16 Low pressure medium inlet 8 Condenser 17 Temperature Sensor 9 First throttle valve

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0034] Reference Figure 1 , Figure 1 The figure is a schematic diagram of the structure of the control device of the air conditioner in the hardware operating environment involved in the embodiment of the present invention.

[0035] like Figure 1 As shown, the control device of the air conditioner may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (Wireless-Fidelity, Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM) memory, or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0036] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation on the control device of the air conditioner, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0037] like Figure 1 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a control program for the air conditioner.

[0038] exist Figure 1 In the control device of the air conditioner shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the control device of the air conditioner of the present invention can be set in the control device of the air conditioner, and the control device of the air conditioner calls the control program of the air conditioner stored in the memory 1005 through the processor 1001, and executes the control method of the air conditioner provided by the embodiment of the present invention.

[0039] The embodiment of the present invention provides a method for controlling an air conditioner, referring to Figure 2 , Figure 2 The figure is a flow chart of a first embodiment of a method for controlling an air conditioner according to the present invention.

[0040] In this embodiment, the control method of the air conditioner includes the following steps:

[0041] Step S10: When the air conditioner is in cooling mode, obtaining the outdoor ambient temperature and the indoor ambient temperature.

[0042] In this embodiment, the execution subject of this embodiment may be the control device of the air conditioner, which has functions such as data processing, data communication and program running, and the control device of the air conditioner may be a controller inside the air conditioner. Of course, it may also be other devices with similar functions, and this implementation condition does not limit this. For the convenience of explanation, this implementation mode is described by taking the control device of the air conditioner as an example.

[0043] It should be noted that the current air conditioning system heat exchanger often uses a split capillary for splitting, and designers need to spend a lot of time to adjust the heat exchanger to make the splitting uniform and obtain the best heat exchange effect. The current technical solution has the defects of complex adjustment and poor consistency, resulting in uneven liquid distribution in the final evaporator, which reduces the heat exchange effect.

[0044] In order to solve the above technical problems in this embodiment, the exhaust port and return air port of the compressor in this embodiment are connected to the reversing valve, and the two ports of the reversing valve are respectively connected to the outdoor heat exchanger and the indoor heat exchanger; the throttling device, the plate heat exchanger and the ejector are connected between the outdoor heat exchanger and the indoor heat exchanger in sequence, one port of the plate heat exchanger is connected to the high-pressure medium inlet of the ejector, and one port of the plate heat exchanger is connected to the low-pressure medium inlet of the ejector and the spray enthalpy port of the compressor. When the air conditioner is in cooling mode, the outdoor ambient temperature and the indoor ambient temperature are obtained, and the working mode of the air conditioner is adjusted according to the outdoor ambient temperature and the indoor ambient temperature, so that the evaporator obtains a saturated refrigerant liquid state, ensuring that the evaporator flow path is evenly distributed and the heat exchange effect is improved. Specifically, it can be achieved in the following way.

[0045] In a specific implementation, before adjusting the working mode of the air conditioner in this embodiment, it is necessary to first detect the operating mode of the air conditioner, the outdoor ambient temperature and the indoor ambient temperature. The operating mode of the air conditioner is, for example, a heating mode or a cooling mode, etc. The outdoor ambient temperature can be obtained by a temperature sensor provided in the outdoor unit, and the indoor ambient temperature can be obtained by a temperature sensor provided in the indoor unit. Specifically, in this embodiment, after obtaining the operating mode of the air conditioner, it is necessary to first determine whether the air conditioner is in the cooling mode. If it is in the cooling mode, the operating mode of the air conditioner is adjusted according to the outdoor ambient temperature and the indoor ambient temperature.

[0046] Step S20: adjusting the working mode of the air conditioner according to the outdoor ambient temperature and the indoor ambient temperature.

[0047] In a specific implementation, in this embodiment, the working mode of the air conditioner can be adjusted based on the outdoor ambient temperature and the indoor ambient temperature obtained as above.

[0048] Specifically, it is necessary to first calculate the temperature difference between the set temperature and the ambient temperature, then compare the outdoor ambient temperature with the preset temperature, and compare the temperature difference with the temperature difference threshold. If the outdoor ambient temperature is greater than the preset temperature, and the temperature difference is also greater than the temperature difference threshold, in this case, the working mode of the air conditioner will be adjusted to the spray enthalpy mode in this embodiment, and when in the spray enthalpy mode, one port of the plate heat exchanger is connected to the spray enthalpy port of the compressor. On the contrary, that is, when the outdoor ambient temperature is less than or equal to the preset temperature and the temperature difference is less than or equal to the temperature difference threshold, the working mode of the air conditioner is adjusted to the induced circulation mode. In this embodiment, the preset temperature can be set to 27°C and the temperature difference threshold can be set to 2°C. For example, when the current operating mode is the cooling mode, the current outdoor ambient temperature is greater than 27°C and the temperature difference is greater than 2°C, the working mode of the air conditioner is adjusted to the spray enthalpy mode. Of course, the above-mentioned preset temperature and temperature difference threshold can also be adjusted accordingly according to actual needs, which is not limited in this embodiment.

[0049] The exhaust port and return air port of the compressor in this embodiment are both connected to the reversing valve, and the two ports of the reversing valve are respectively connected to the outdoor heat exchanger and the indoor heat exchanger; the throttling device, the plate heat exchanger and the ejector are connected between the outdoor heat exchanger and the indoor heat exchanger in sequence, one port of the plate heat exchanger is connected to the high-pressure medium inlet of the ejector, and one port of the plate heat exchanger is connected to the low-pressure medium inlet of the ejector and the spray enthalpy port of the compressor. When the air conditioner is in cooling mode, the outdoor ambient temperature and the indoor ambient temperature are obtained, and the working mode of the air conditioner is adjusted according to the outdoor ambient temperature and the indoor ambient temperature, so that the evaporator obtains a saturated refrigerant liquid state, ensuring that the evaporator flow path is evenly distributed and the heat exchange effect is improved.

[0050] refer to Figure 3 , Figure 3 It is a flow chart of a second embodiment of a method for controlling an air conditioner according to the present invention.

[0051] Based on the first embodiment, the control method of the air conditioner in this embodiment further includes after step S20:

[0052] Step S30: when the air conditioner is operated in the induced mode, obtaining the middle temperature of the indoor evaporator and the outlet temperature of the plate heat exchanger.

[0053] Step S40: determining the opening of the control valve according to the middle temperature of the indoor evaporator and the outlet temperature of the plate heat exchanger.

[0054] In a specific implementation, after obtaining the working mode of the air conditioner, the target subcooling degree can be determined based on different working modes in this embodiment. For example, when the working mode is the injection enthalpy mode, the corresponding target subcooling degree can be set to 3 to 8°C, and when the working mode is the induced circulation mode, the corresponding target subcooling degree can be set to -1 to 1°C. The above subcooling degree setting is only for example. In actual application, it can be set accordingly according to the actual adjustment requirements, and this embodiment does not limit this.

[0055] It should be noted that after passing through the plate heat exchanger, the refrigerant can flow into the high-pressure medium inlet and the low-pressure medium inlet of the ejector respectively with the help of the three-way valve. The throttling device can control the refrigerant flow rate flowing into the ejector, thereby realizing the adjustment of the injection and introduction ratio of the ejector. The change of the injection and introduction ratio of the ejector corresponds to the change of the subcooling degree of the evaporator. Therefore, the subcooling degree can be adjusted by adjusting the opening of the throttling device.

[0056] Further, if the working mode is the enthalpy injection mode, in the enthalpy injection mode, the target subcooling in this embodiment is set to the first subcooling, and in the induced circulation mode, the target subcooling in this embodiment is set to the second subcooling, wherein the first subcooling can be set to 3 to 8°C, and the second subcooling can be set to -1 to 1°C. In actual applications, it can also be adjusted accordingly according to specific control requirements, which is not limited in this embodiment.

[0057] It should be noted that the calculation method of subcooling is different in different working modes. In the injection enthalpy mode, the first subcooling is determined by the outlet temperature and the inlet temperature of the plate heat exchanger. Specifically, the first subcooling can be the temperature difference between the outlet temperature and the inlet temperature. In the induced circulation mode, the second subcooling is determined by the middle temperature of the indoor heat exchanger and the outlet temperature of the plate heat exchanger. Specifically, the second subcooling can be the temperature difference between the middle temperature of the indoor heat exchanger and the outlet temperature of the plate heat exchanger. Furthermore, adjusting the opening of the throttling device will affect the subcooling degree, and the subcooling degree is related to the temperature difference between different temperatures. Therefore, in this embodiment, adjusting the opening of the throttling device is actually to ensure that the temperature difference is within the temperature range corresponding to the superheating degree. For example, when the first subcooling degree is set to 3-8°C, adjusting the opening of the throttling device is to control the temperature difference between the outlet temperature and the inlet temperature to be within the range of 3-8°C. For example, when the second subcooling degree is set to -1-1°C, adjusting the opening of the throttling device is to control the temperature difference between the middle temperature of the indoor heat exchanger and the outlet temperature of the plate heat exchanger to be within the range of -1-1°C.

[0058] Further, in the injection enthalpy mode, when the temperature difference between the outlet temperature and the inlet temperature is within the range of 3 to 8°C, in this case, the inlet of the three-way valve is connected to the first outlet to form an injection enthalpy path. Alternatively, before the injection circulation mode, the inlet of the three-way valve is connected to the second outlet.

[0059] In this embodiment, after adjusting the temperature difference between the outlet temperature and the inlet temperature of the plate heat exchanger according to the first subcooling degree, the inlet of the three-way valve is connected to the first outlet to form an enthalpy spray path, and the first outlet is connected to the enthalpy spray port of the compressor; or, before adjusting the temperature difference between the middle temperature of the indoor heat exchanger and the outlet temperature of the plate heat exchanger according to the second subcooling degree, the inlet of the three-way valve is connected to the second outlet, and the second outlet is connected to the low-pressure medium inlet of the ejector, and when the working mode is the enthalpy spray mode, the first subcooling degree is used as the target subcooling degree; when the working mode is the ejection cycle mode, the second subcooling degree is used as the target subcooling degree, and the temperature difference between the outlet temperature and the inlet temperature of the plate heat exchanger is adjusted according to the first subcooling degree; or, the temperature difference between the middle temperature of the indoor heat exchanger and the outlet temperature of the plate heat exchanger is adjusted according to the second subcooling degree. In the above manner, the subcooling degree of the indoor unit evaporator can be effectively controlled to improve the heat exchanger effect.

[0060] refer to Figure 4 , Figure 4 This is a structural block diagram of a first embodiment of an air conditioner according to the present invention.

[0061] like Figure 4As shown, in this embodiment, the air conditioner includes a compressor, a reversing valve, an ejector, a throttling device, a plate heat exchanger, an indoor heat exchanger and an outdoor heat exchanger; the exhaust port and the return port of the compressor are both connected to the reversing valve, and the two ports of the reversing valve are respectively connected to the outdoor heat exchanger and the indoor heat exchanger; the throttling device, the plate heat exchanger and the ejector are sequentially connected between the outdoor heat exchanger and the indoor heat exchanger, the two ports of the plate heat exchanger are both connected to the throttling device, one port of the plate heat exchanger is connected to the high-pressure medium inlet of the ejector, and one port of the plate heat exchanger is connected to the low-pressure medium inlet of the ejector and the spray enthalpy port of the compressor, the air conditioner also includes a control valve, the control valve is arranged between one port of the plate heat exchanger and the throttling device, and the control valve includes any one of a throttling device, an electronic expansion valve and a flow regulating valve. Furthermore, the air conditioner further comprises a switching valve, the switching valve connects one port of the plate heat exchanger, the low-pressure medium inlet of the ejector and the enthalpy spray port of the compressor, and the switching valve can selectively connect one port of the plate heat exchanger with the low-pressure medium inlet of the ejector, and connect one port of the plate heat exchanger with the enthalpy spray port of the compressor. The reversing valve may be a four-way valve, and the switching valve may be a three-way valve.

[0062] In a specific implementation, the structure of the air conditioner can refer to Figure 4 As shown, the air conditioner in this embodiment includes an indoor unit side and an outdoor unit side. The outdoor unit side is composed of a compressor 4, a gas-liquid separator 7, a condenser 8, a first throttle valve 9, a second throttle valve 10, a solenoid valve 11, a plate heat exchanger 12, a three-way valve 13 and an ejector 14. The compressor 4 is also provided with an air intake port 5 and an enthalpy injection port 6. The three-way valve 11 is a one-inlet and two-outlet type. The three-way valve 11 includes a three-way valve inlet 1, a three-way valve first outlet 2 and a three-way valve second outlet 3. The ejector 14 has a high-pressure medium inlet 15 and a low-pressure medium inlet 16. The nozzle of the ejector 14 exchanges heat with the indoor unit. The three-way valve is connected to the low-pressure medium inlet 16 of the ejector 14 and the outlet of the plate heat exchanger 12. After throttling by the second throttle valve, the refrigerant passes through the second outlet 3 of the three-way valve 14 to the low-pressure medium inlet 16 of the ejector 14. The other refrigerant directly enters the high-pressure medium inlet 15 of the ejector 14. The medium-pressure refrigerant is generated from the nozzle by mixing the high-pressure refrigerant and the low-pressure refrigerant. In this way, the injection and introduction ratio can be adjusted to control the evaporator inlet at a very small degree of subcooling, so that the evaporator obtains a saturated refrigerant liquid state and the evaporator flow path can be evenly distributed.

[0063] Furthermore, due to the presence of the enthalpy spray port 6, in the air conditioner of this embodiment, in the refrigeration mode with a large load, the solenoid valve 11 is opened, and the first outlet 2 of the three-way valve 11 is connected to the enthalpy spray port 6, and the cold medium-temperature liquid refrigerant is divided into two routes, one route passes through the plate heat exchanger 12 to the first fluid inlet of the ejector 14, and the other route passes through the plate heat exchanger 12 to the three-way valve 11 after throttling, and then returns to the enthalpy spray port 6 of the compressor 4, thereby improving the system capacity and energy efficiency. The indoor side unit is provided with an evaporator, and the evaporator is also provided with a temperature sensor 17, which can detect the middle temperature of the evaporator, etc. By adding a three-way valve to the air conditioner, an ejector can meet the requirements of spraying enthalpy during low-temperature heating, and can also increase the system heat exchange when no enthalpy is sprayed. The three-way valve can select to spray enthalpy or not to spray enthalpy and enter the ejector after throttling through a set control method. It should also be emphasized that the above method can reduce the pressure before the throttle valve entering the system, reduce the impact on the expansion valve, and effectively avoid the problem of throttling sound caused by excessive pressure drop. It should also be further explained that the conduction path of the three-way valve in different working modes is also different. Specifically, the working modes in this embodiment include the spray enthalpy mode and the induced circulation mode. In the spray enthalpy mode, the three-way valve will conduct the spray enthalpy path from the inlet 1 to the first outlet 2. In the induced circulation mode, the three-way valve will conduct the inlet 1 to the second outlet 3, so that after the refrigerant is throttled, it passes through the plate heat exchanger to the three-way valve, and then returns to the compressor spray enthalpy port, thereby improving efficiency.

[0064] The exhaust port and return air port of the compressor in this embodiment are both connected to the reversing valve, and the two ports of the reversing valve are respectively connected to the outdoor heat exchanger and the indoor heat exchanger; the throttling device, the plate heat exchanger and the ejector are connected in sequence between the outdoor heat exchanger and the indoor heat exchanger, one port of the plate heat exchanger is connected to the high-pressure medium inlet of the ejector, and one port of the plate heat exchanger is connected to the low-pressure medium inlet of the ejector and the spray enthalpy port of the compressor. Through the structural setting of the above-mentioned air conditioner, the evaporator obtains a saturated refrigerant liquid state, which ensures that the evaporator flow path is evenly distributed and improves the heat exchange effect.

[0065] In addition, an embodiment of the present invention further provides a storage medium, on which a control program for an air conditioner is stored. When the control program for the air conditioner is executed by a processor, the steps of the control method for the air conditioner described above are implemented.

[0066] Since the storage medium adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0067] Reference Figure 5 , Figure 5 FIG. 1 is a structural block diagram of a first embodiment of a control device for an air conditioner according to the present invention.

[0068] like Figure 5 As shown, the control device of the air conditioner provided in the embodiment of the present invention comprises:

[0069] The acquisition module 10 is used to acquire the outdoor ambient temperature and the indoor ambient temperature when the air conditioner is in cooling mode.

[0070] In this embodiment, the execution subject of this embodiment may be the control device of the air conditioner, which has functions such as data processing, data communication and program running, and the control device of the air conditioner may be a controller inside the air conditioner. Of course, it may also be other devices with similar functions, and this implementation condition does not limit this. For the convenience of explanation, this implementation mode is described by taking the control device of the air conditioner as an example.

[0071] It should be noted that the current air conditioning system heat exchanger often uses a split capillary for splitting, and designers need to spend a lot of time to adjust the heat exchanger to make the splitting uniform and obtain the best heat exchange effect. The current technical solution has the defects of complex adjustment and poor consistency, resulting in uneven liquid distribution in the final evaporator, which reduces the heat exchange effect.

[0072] In order to solve the above technical problems in this embodiment, the exhaust port and return air port of the compressor in this embodiment are connected to the reversing valve, and the two ports of the reversing valve are respectively connected to the outdoor heat exchanger and the indoor heat exchanger; the throttling device, the plate heat exchanger and the ejector are connected between the outdoor heat exchanger and the indoor heat exchanger in sequence, one port of the plate heat exchanger is connected to the high-pressure medium inlet of the ejector, and one port of the plate heat exchanger is connected to the low-pressure medium inlet of the ejector and the spray enthalpy port of the compressor. When the air conditioner is in cooling mode, the outdoor ambient temperature and the indoor ambient temperature are obtained, and the working mode of the air conditioner is adjusted according to the outdoor ambient temperature and the indoor ambient temperature, so that the evaporator obtains a saturated refrigerant liquid state, ensuring that the evaporator flow path is evenly distributed and the heat exchange effect is improved. Specifically, it can be achieved in the following way.

[0073] In a specific implementation, before adjusting the working mode of the air conditioner in this embodiment, it is necessary to first detect the operating mode of the air conditioner, the outdoor ambient temperature and the indoor ambient temperature. The operating mode of the air conditioner is, for example, a heating mode or a cooling mode, etc. The outdoor ambient temperature can be obtained by a temperature sensor provided in the outdoor unit, and the indoor ambient temperature can be obtained by a temperature sensor provided in the indoor unit. Specifically, in this embodiment, after obtaining the operating mode of the air conditioner, it is necessary to first determine whether the air conditioner is in the cooling mode. If it is in the cooling mode, the operating mode of the air conditioner is adjusted according to the outdoor ambient temperature and the indoor ambient temperature.

[0074] The control module 20 is used to adjust the working mode of the air conditioner according to the outdoor ambient temperature and the indoor ambient temperature.

[0075] In a specific implementation, in this embodiment, the working mode of the air conditioner can be adjusted based on the outdoor ambient temperature and the indoor ambient temperature obtained as above.

[0076] Specifically, it is necessary to first calculate the temperature difference between the set temperature and the ambient temperature, then compare the outdoor ambient temperature with the preset temperature, and compare the temperature difference with the temperature difference threshold. If the outdoor ambient temperature is greater than the preset temperature, and the temperature difference is also greater than the temperature difference threshold, in this case, the working mode of the air conditioner will be adjusted to the spray enthalpy mode in this embodiment, and when in the spray enthalpy mode, one port of the plate heat exchanger is connected to the spray enthalpy port of the compressor. On the contrary, that is, when the outdoor ambient temperature is less than or equal to the preset temperature and the temperature difference is less than or equal to the temperature difference threshold, the working mode of the air conditioner is adjusted to the induced circulation mode. In this embodiment, the preset temperature can be set to 27°C and the temperature difference threshold can be set to 2°C. For example, when the current operating mode is the cooling mode, the current outdoor ambient temperature is greater than 27°C and the temperature difference is greater than 2°C, the working mode of the air conditioner is adjusted to the spray enthalpy mode. Of course, the above-mentioned preset temperature and temperature difference threshold can also be adjusted accordingly according to actual needs, which is not limited in this embodiment.

[0077] The exhaust port and return air port of the compressor in this embodiment are both connected to the reversing valve, and the two ports of the reversing valve are respectively connected to the outdoor heat exchanger and the indoor heat exchanger; the throttling device, the plate heat exchanger and the ejector are connected between the outdoor heat exchanger and the indoor heat exchanger in sequence, one port of the plate heat exchanger is connected to the high-pressure medium inlet of the ejector, and one port of the plate heat exchanger is connected to the low-pressure medium inlet of the ejector and the spray enthalpy port of the compressor. When the air conditioner is in cooling mode, the outdoor ambient temperature and the indoor ambient temperature are obtained, and the working mode of the air conditioner is adjusted according to the outdoor ambient temperature and the indoor ambient temperature, so that the evaporator obtains a saturated refrigerant liquid state, ensuring that the evaporator flow path is evenly distributed and the heat exchange effect is improved.

[0078] It should be understood that the above is only an example and does not constitute any limitation on the technical solution of the present invention. In specific applications, technicians in this field can make settings as needed, and the present invention does not limit this.

[0079] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of the present invention. In practical applications, technicians in this field can select part or all of them according to actual needs to achieve the purpose of the present embodiment, and no limitation is made here.

[0080] In addition, for technical details that are not described in detail in this embodiment, reference can be made to the air conditioner control method provided in any embodiment of the present invention, and will not be repeated here.

[0081] In addition, it should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0082] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0083] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory (ROM) / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0084] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

[0085] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are displayed in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and it can be performed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

Claims

1. An air conditioner, characterized in that: The air conditioner includes a compressor, a reversing valve, an ejector, a throttling device, a plate heat exchanger, an indoor heat exchanger and an outdoor heat exchanger; the exhaust port and the return air port of the compressor are both connected to the reversing valve, and the two ports of the reversing valve are respectively connected to the outdoor heat exchanger and the indoor heat exchanger; the throttling device, the plate heat exchanger and the ejector are connected in sequence between the outdoor heat exchanger and the indoor heat exchanger, the two ports of the plate heat exchanger are both connected to the throttling device, one port of the plate heat exchanger is connected to the high-pressure medium inlet of the ejector, and one port of the plate heat exchanger is connected to the low-pressure medium inlet of the ejector and the spray enthalpy port of the compressor.

2. The air conditioner according to claim 1, characterized in that: The air conditioner further comprises a control valve, which is arranged between a port of the plate heat exchanger and the throttling device, and the control valve comprises any one of a throttling device, an electronic expansion valve and a flow regulating valve.

3. The air conditioner according to claim 1, characterized in that: The air conditioner also includes a switching valve, which connects a port of the plate heat exchanger, a low-pressure medium inlet of the ejector and an enthalpy spray port of the compressor. The switching valve can selectively connect a port of the plate heat exchanger with the low-pressure medium inlet of the ejector, and connect a port of the plate heat exchanger with the enthalpy spray port of the compressor.

4. A method for controlling an air conditioner, characterized in that: The control method of the air conditioner is applied to the air conditioner according to any one of claims 1 to 3, and the control method of the air conditioner comprises: When the air conditioner is in cooling mode, obtaining the outdoor ambient temperature and the indoor ambient temperature; The working mode of the air conditioner is adjusted according to the outdoor ambient temperature and the indoor ambient temperature.

5. The air conditioner control method according to claim 4, characterized in that: The step of adjusting the working mode of the air conditioner according to the outdoor ambient temperature and the indoor ambient temperature includes: determining a temperature difference between a set temperature and the indoor ambient temperature; When the outdoor ambient temperature is greater than a preset temperature and the temperature difference is greater than a temperature difference threshold, the operating mode of the air conditioner is adjusted to an enthalpy injection mode, wherein when the air conditioner is in the enthalpy injection mode, a port of the plate heat exchanger is connected to the enthalpy injection port of the compressor.

6. The control method of the air conditioner according to claim 5, characterized in that: The control method of the air conditioner comprises: When the outdoor ambient temperature is less than or equal to a preset temperature and the temperature difference is less than or equal to a temperature difference threshold, the operating mode of the air conditioner is adjusted to the ejection mode, wherein when the air conditioner is in the ejection mode, one port of the plate heat exchanger is connected to the low-pressure medium inlet of the ejector.

7. The air conditioner control method according to claim 6, characterized in that: The air conditioner further comprises a control valve, wherein the control valve is arranged between a port of the plate heat exchanger and the throttling device, and the control method of the air conditioner comprises: When the air conditioner is operated in the induced mode, obtaining the middle temperature of the indoor evaporator and the outlet temperature of the plate heat exchanger; The opening degree of the control valve is determined according to the middle temperature of the indoor evaporator and the outlet temperature of the plate heat exchanger.

8. A control device for an air conditioner, characterized in that: The control device of the air conditioner comprises: An acquisition module, used for acquiring the outdoor ambient temperature and the indoor ambient temperature when the air conditioner is in a cooling mode; The control module is used to adjust the working mode of the air conditioner according to the outdoor ambient temperature and the indoor ambient temperature.

9. A control device for an air conditioner, characterized in that: The air conditioner control device comprises: a memory, a processor, and an air conditioner control program stored in the memory and running on the processor, wherein the air conditioner control program is configured to implement the air conditioner control method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium stores a control program of the air conditioner, and when the control program of the air conditioner is executed by the processor, the control method of the air conditioner according to any one of claims 1 to 7 is implemented.

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