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

Abstract

The application discloses an air conditioner control method and device, an air conditioner and a storage medium, and belongs to the technical field of air conditioners. When the air conditioner meets a heating adjustment condition, the application disconnects the connection between an economizer auxiliary path outlet and a compressor, connects the economizer auxiliary path outlet and a gas-liquid separator, and opens the electronic expansion valve wider. The ambient temperature of the space where the air conditioner is located is detected, the ambient temperature is compared with a temperature threshold range, and the opening of the electronic expansion valve is adjusted according to the comparison result, so that the air injection enthalpy increasing form of the air conditioner is adjusted and the system heating capacity is improved. In this way, the heating capacity is further improved on the basis of the air injection enthalpy increasing system, the air injection enthalpy increasing form under different ambient temperatures is changed, the evaporator refrigerant resistance is reduced, the low pressure is improved, and the EEV (Electronic Expansion Valve) opening degree of the outdoor unit can be further reduced, the system high pressure is improved, and the heating capacity is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, and particularly to an air conditioner control method and device, an air conditioner and a storage medium. BACKGROUND

[0002] In winter, air conditioner manufacturers will face various problems of poor heating effect, and the situation is even worse in the cold winter. At present, the common method to improve the heating capacity of the products on the market is: 1. Small capacity sales with large capacity units, but this method has high cost and high noise. 2. Increase the power of the electric auxiliary heating of the indoor unit as a heating compensation. However, this scheme has poor energy efficiency and greatly increases the user's usage cost. 3. Develop a jet enhancement system to improve the low-temperature heating capacity. However, in the current application scenario, the heating cost is still high and the effect needs to be improved.

[0003] The above content is only used to assist in understanding the technical solutions of the present application and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0004] The main purpose of the present application is to provide an air conditioner control method, device, air conditioner and storage medium, which aims to solve the technical problems of high cost and poor effect of the traditional jet enhancement system in the prior art.

[0005] To achieve the above purpose, the present application provides an air conditioner control method, which is used for an air conditioner, and the air conditioner comprises an economizer, a gas-liquid separator, an outdoor heat exchanger, an indoor heat exchanger, a compressor and an electronic expansion valve, the electronic expansion valve is connected with the outdoor heat exchanger and the auxiliary road inlet of the economizer respectively, the main road inlet of the economizer is connected with the indoor heat exchanger, the main road outlet of the economizer is connected with the outdoor heat exchanger, and the auxiliary road outlet of the economizer is connected with the gas-liquid separator and the compressor.

[0006] The method comprises the following steps:

[0007] When the air conditioner meets the heating adjustment condition, the connection between the economizer auxiliary road outlet and the compressor is disconnected, the connection between the economizer auxiliary road outlet and the gas-liquid separator is connected, and the opening of the electronic expansion valve is opened.

[0008] Detect the ambient temperature of the space where the air conditioner is located, compare the ambient temperature with the temperature threshold range, and adjust the opening of the electronic expansion valve according to the comparison result, so as to adjust the jet enhancement form of the air conditioner through the electronic expansion valve and improve the system heating capacity.

[0009] Optionally, the air conditioner further comprises a first electromagnetic valve and a second electromagnetic valve, the first electromagnetic valve is connected with the bypass outlet of the economizer and the gas-liquid separator respectively, and the second electromagnetic valve is connected with the bypass outlet of the economizer and the compressor respectively.

[0010] The air conditioner further comprises a first electromagnetic valve and a second electromagnetic valve, the first electromagnetic valve is connected with the bypass outlet of the economizer and the gas-liquid separator respectively, and the second electromagnetic valve is connected with the bypass outlet of the economizer and the compressor respectively.

[0011] When the air conditioner is in the heating mode and runs for a preset time length, if the exhaust temperature of the air conditioner is less than a preset exhaust temperature threshold, it is determined that the air conditioner meets the heating adjustment condition, the first electromagnetic valve is closed to disconnect the connection between the bypass outlet of the economizer and the compressor, and the second electromagnetic valve is opened to connect the connection between the bypass outlet of the economizer and the gas-liquid separator.

[0012] The opening degree of the electronic expansion valve is adjusted to a first opening degree, a second opening degree and a third opening degree in sequence every interval of a preset adjustment time length, the first opening degree is less than the second opening degree, and the second opening degree is less than the third opening degree.

[0013] Optionally, the detection of the ambient temperature of the space where the air conditioner is located, the comparison of the ambient temperature with a temperature threshold range, and the adjustment of the opening degree of the electronic expansion valve according to the comparison result, comprise:

[0014] The ambient temperature of the space where the air conditioner is located is detected, and the ambient temperature is compared with a temperature threshold range, the temperature threshold range is a threshold range greater than a first temperature threshold and less than a second temperature threshold, and the first temperature threshold is less than the second temperature threshold.

[0015] When the ambient temperature is in the temperature threshold range, the connection between the bypass outlet of the economizer and the compressor is connected, the connection between the bypass outlet of the economizer and the gas-liquid separator is disconnected, and the economizer bypass overheating degree is obtained.

[0016] The economizer bypass overheating degree is compared with a first demand threshold, and the opening degree of the electronic expansion valve is adjusted according to the comparison result.

[0017] Optionally, the adjustment of the opening degree of the electronic expansion valve according to the comparison result comprises:

[0018] According to the comparison result, the temperature difference between the economizer bypass overheating degree and the first demand threshold is determined.

[0019] The temperature difference is compared with a plurality of preset comparison parameters, and the opening degree of the electronic expansion valve is adjusted according to the comparison result.

[0020] Optionally, the detecting the ambient temperature of the space where the air conditioner is located, comparing the ambient temperature with a temperature threshold range, and adjusting the opening degree of the electronic expansion valve according to the comparison result comprises:

[0021] detecting the ambient temperature of the space where the air conditioner is located, comparing the ambient temperature with a temperature threshold range, the temperature threshold range being a threshold range less than a first temperature threshold and less than a second temperature threshold, the first temperature threshold being less than the second temperature threshold;

[0022] when the ambient temperature is not in the temperature threshold range and the ambient temperature is less than or equal to the first temperature threshold, disconnecting the connection between the economizer auxiliary path outlet and the compressor, connecting the connection between the economizer auxiliary path outlet and the gas-liquid separator, and obtaining the main path inlet temperature and the main path outlet temperature of the economizer;

[0023] adjusting the opening degree of the electronic expansion valve according to the main path inlet temperature, the main path outlet temperature, the ambient temperature, a second demand threshold, and a third demand threshold.

[0024] Optionally, the adjusting the opening degree of the electronic expansion valve according to the main path inlet temperature, the main path outlet temperature, the ambient temperature, a second demand threshold, and a third demand threshold comprises:

[0025] comparing the ambient temperature with a second demand threshold to obtain a first comparison result;

[0026] calculating a main path temperature difference of the economizer according to the main path inlet temperature and the main path outlet temperature;

[0027] comparing the main path temperature difference with a third demand threshold to obtain a second comparison result;

[0028] adjusting the opening degree of the electronic expansion valve according to the first comparison result and the second comparison result.

[0029] Optionally, the air conditioner further comprises an outdoor electronic expansion valve, one end of the outdoor electronic expansion valve being connected with an outdoor heat exchanger, and the other end of the outdoor electronic expansion valve being connected with the electronic expansion valve and the main path outlet of the economizer;

[0030] after the adjusting the opening degree of the electronic expansion valve according to the main path inlet temperature, the main path outlet temperature, the ambient temperature, a second demand threshold, and a third demand threshold, the method further comprises:

[0031] after the adjusting the opening degree of the electronic expansion valve, reducing the opening degree of the outdoor electronic expansion valve by a fourth opening degree, and adjusting the outdoor electronic expansion valve according to a target exhaust temperature every interval of a preset adjustment time length.

[0032] In addition, to achieve the above object, the present application also provides an air conditioner control device, which comprises:

[0033] a superheat adjustment module, configured to disconnect the connection between the economizer auxiliary path outlet and the compressor, connect the connection between the economizer auxiliary path outlet and the gas-liquid separator, and open the electronic expansion valve when the air conditioner meets a heating adjustment condition;

[0034] a jet-enhanced enthalpy adjustment module, configured to detect the ambient temperature of the space where the air conditioner is located, compare the ambient temperature with a temperature threshold range, and adjust the opening degree of the electronic expansion valve according to the comparison result, so as to adjust the jet-enhanced enthalpy form of the air conditioner through the electronic expansion valve and improve the system heating capacity.

[0035] In addition, to achieve the above object, the present application also provides an air conditioner, which 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 as described above.

[0036] In addition, to achieve the above object, the present application also provides a storage medium, which stores an air conditioner control program, wherein the air conditioner control program is executed by a processor to implement the air conditioner control method as described above.

[0037] The application is used for an air conditioner, which comprises an economizer, a gas-liquid separator, an outdoor heat exchanger, an indoor heat exchanger, a compressor and an electronic expansion valve, the electronic expansion valve is connected with the outdoor heat exchanger and an auxiliary path inlet of the economizer respectively, a main path inlet of the economizer is connected with the indoor heat exchanger, a main path outlet of the economizer is connected with the outdoor heat exchanger, an auxiliary path outlet of the economizer is connected with the gas-liquid separator and the compressor; when the air conditioner meets a heating adjustment condition, the connection between the auxiliary path outlet of the economizer and the compressor is disconnected, the connection between the auxiliary path outlet of the economizer and the gas-liquid separator is connected, and the opening of the electronic expansion valve is enlarged; the ambient temperature of the space where the air conditioner is located is detected, the ambient temperature is compared with a temperature threshold range, and the opening of the electronic expansion valve is adjusted according to the comparison result, so as to adjust the jet-incremental-enthalpy form of the air conditioner through the electronic expansion valve and improve the system heating capacity. In this way, when the air conditioner meets the heating adjustment condition, the superheat degree is adjusted first, then the ambient temperature of the space where the air conditioner is located is detected, and the opening of the electronic expansion valve is adjusted according to the comparison result of the ambient temperature and the temperature threshold range, so as to further improve the heating capacity on the basis of the jet-incremental-enthalpy system, change the jet-incremental-enthalpy form under different ambient temperatures, reduce the refrigerant resistance of the evaporator, improve the low pressure, and then the EEV opening of the outdoor unit can be further reduced, so as to improve the system high pressure and the heating capacity. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of the air conditioner of the hardware running environment involved in the embodiment scheme of the application.

[0039] Figure 2 It is a flowchart of the first embodiment of the air conditioner control method of the application.

[0040] Figure 3 It is a structural schematic diagram of the air conditioner in the embodiment of the air conditioner control method of the application.

[0041] Figure 4 It is a flowchart of the second embodiment of the air conditioner control method of the application.

[0042] Figure 5 It is a flowchart of the third embodiment of the air conditioner control method of the application.

[0043] Figure 6 It is a complete flowchart of the air conditioner control logic in the embodiment of the air conditioner control method of the application.

[0044] Figure 7 It is a structural block diagram of the first embodiment of the air conditioner control device of the application.

[0045] The objectives, functional characteristics and advantages of the present application will be further illustrated in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] It should be understood that the specific embodiments described herein are merely illustrative of the present application and do not limit the present application.

[0047] Reference Figure 1 , Figure 1 The structure schematic diagram of an air conditioner related to the hardware running environment of the embodiment of the present application.

[0048] As Figure 1 shown, the air conditioner can include a processor 1001, for example, a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to realize the connection and communication between the components. The user interface 1003 can include a display, an input unit such as a keyboard, and optionally the user interface 1003 can further include a standard wired interface, a wireless interface. The network interface 1004 can optionally include a standard wired interface, a wireless interface (such as a wireless fidelity (Wi-Fi) interface). The memory 1005 can be a high-speed random access memory (RAM) memory, or a stable non-volatile memory (NVM) such as a disk memory. The memory 1005 can also be a storage device independent of the aforementioned processor 1001.

[0049] Those skilled in the art can understand that Figure 1 the structure shown in the above does not constitute a limitation on the air conditioner, and can include more or fewer components than the diagram, or combine certain components, or different component arrangements.

[0050] As Figure 1 shown, the memory 1005 as a storage medium can include an operating system, a network communication module, a user interface module, and an air conditioner control program.

[0051] In Figure 1 the air conditioner shown, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the air conditioner of the present application can be arranged in the air conditioner, and the air conditioner calls the air conditioner control program stored in the memory 1005 through the processor 1001, and executes the air conditioner control method provided by the embodiment of the present application.

[0052] The embodiment of the present application provides an air conditioner control method, referring to Figure 2 , Figure 2 FIG. 1 is a flowchart of an air conditioner control method according to a first embodiment of the present application.

[0053] In the embodiment, the air conditioner control method comprises the following steps:

[0054] Step S10: when the air conditioner satisfies a heating adjustment condition, disconnecting the connection between the economizer auxiliary path outlet and the compressor, connecting the connection between the economizer auxiliary path outlet and the gas-liquid separator, and opening the EEV.

[0055] In the embodiment, the execution subject of the embodiment can be the air conditioner, which has functions of data processing, data communication and program running, and the air conditioner can be any type of air conditioner. Of course, it can also be other devices with similar functions, and the embodiment is not limited in this regard. For the convenience of description, the embodiment is described by taking the air conditioner as an example.

[0056] It should be understood that, as Figure 3 FIG. 1 is a structure diagram of the air conditioner in the embodiment, wherein T DSH is an exhaust superheat degree, T P is an exhaust temperature, T DSH-1 is an economizer auxiliary path superheat degree T 1b -T 1a , T 1a is an economizer auxiliary path inlet temperature, T 1b is an economizer auxiliary path outlet temperature, T1 is an economizer main path inlet temperature, T2 is an economizer main path outlet temperature, EEV is an outdoor electronic expansion valve, EEV1 is a combined jet augmenting electronic expansion valve, i.e., the electronic expansion valve in the embodiment, and SV1 and SV2 are respectively a first electromagnetic valve and a second electromagnetic valve.

[0057] It should be understood that at present, all air conditioning manufacturers will face various problems of poor heating effect in winter, and the situation will be more severe in cold winter. How to improve the heating capacity of the currently marketed products to improve the heating means is generally: 1. Small capacity sales with large capacity units, but this measure is high in cost and high in noise. 2. Increase the power of the indoor unit to supplement the heating. But this scheme has poor energy efficiency, and the user's use cost increases significantly. 3. Develop a jet enhancement system to improve low-temperature heating capacity. But this scheme is still high in heating cost and the effect needs to be improved in the current application scenario. The jet enhancement control of the air conditioner using the scheme of the embodiment does not need to use a large-capacity unit to make a small capacity, the cost can be reduced by 20-30%, and the noise is small, the user experience effect is better. The high-power electric auxiliary heating can be cancelled, the cost increase is small, the safety and reliability are improved, and the user's heating cost is also reduced by 5-10%. The user's fresh feeling is increased, which can drive new growth.

[0058] In a specific implementation, the heating adjustment condition is to determine whether the current state of the air conditioner can be over-heated and the subsequent enthalpy operation, and the heating adjustment condition is determined based on the running state and the discharge temperature of the air conditioner.

[0059] It should be noted that the connection between the outlet of the economizer auxiliary path and the compressor is disconnected, and the connection between the outlet of the economizer auxiliary path and the gas-liquid separator is connected, which is realized by the opening and closing of the electromagnetic valve.

[0060] Further, in order to accurately overheat adjustment, as shown in Figure 3 The air conditioner further comprises a first electromagnetic valve and a second electromagnetic valve, and whether the air conditioner meets the heating adjustment condition is mainly determined by judging: after the air conditioner receives a start signal to start running, it is in a heating mode, and has run for a preset time length, and the discharge temperature of the compressor of the air conditioner is less than a preset discharge temperature threshold, at this time, it is determined that the air conditioner meets the heating adjustment condition, and if any of the above conditions is not met, it is determined that the heating adjustment condition is not met, wherein the preset time length can be 5 minutes, or any running time, which is not limited by the embodiment; the preset discharge temperature threshold can be set to 90, or other integer values, which are not limited by the embodiment.

[0061] It should be understood that when it is determined that the air conditioner meets the heating adjustment condition, the first electromagnetic valve is closed, and the second electromagnetic valve is opened, so as to realize the connection of the compressor to the outlet of the auxiliary path of the economizer, and the disconnection of the gas-liquid separator from the outlet of the auxiliary path of the economizer.

[0062] In a specific implementation, after the first electromagnetic valve and the second electromagnetic valve are adjusted, the opening degree of the electronic expansion valve is adjusted again, and the adjustment is performed every preset adjustment time length, which can be any length of time (for example, 1 min), which is not limited in this embodiment, and the first opening degree, the second opening degree and the third opening degree are opening degrees that are sequentially increased and are multiples of 4, for example: the first opening degree, the second opening degree and the third opening degree are X, X+16 and X+32 respectively.

[0063] In this way, the overheat adjustment according to the target change is realized by adjusting the opening degree of the electronic expansion valve in the preparation stage.

[0064] Step S20: detecting the ambient temperature of the space where the air conditioner is located, comparing the ambient temperature with the temperature threshold range, and adjusting the opening degree of the electronic expansion valve according to the comparison result to adjust the jet enthalpy increase form of the air conditioner and improve the system heating capacity through the electronic expansion valve.

[0065] It should be noted that after the overheat adjustment, the temperature of the space where the air conditioner is located is obtained as the ambient temperature, and then the ambient temperature and the temperature threshold range are compared, so that the opening degree of the electronic expansion valve is adjusted according to the comparison result, and the jet enthalpy increase form that has the best effect is selected according to the different ambient temperatures to improve the system efficiency.

[0066] It should be understood that when the ambient temperature is in the temperature threshold range, T DSH >10℃ for 30s, then EEV1 is restored to overheat adjustment, and receives defrosting, fault shutdown, temperature reaching shutdown, EVI inlet or outlet sensor fault signal, etc. EEV1 is closed and the count is cleared.

[0067] In a specific implementation, when the ambient temperature is not in the temperature threshold range, the defrosting and oil return signals are received, EEV2 is immediately closed, and after 5 minutes, the adjustment is performed again according to the above process.

[0068] It should be noted that the form and mode of the jet enthalpy increase of the air conditioner adjusted by the electronic expansion valve can improve the system efficiency and heating effect in the most optimal effect and efficiency.

[0069] In this embodiment, overheat adjustment is first performed when the air conditioner meets the heating adjustment condition, and then the ambient temperature of the space where the air conditioner is located is detected, and the opening degree of the electronic expansion valve is adjusted according to the comparison result of the ambient temperature and the temperature threshold range. The heating capacity is further improved on the basis of the jet enthalpy increase system, the jet enthalpy increase form under different ambient temperatures is changed, the evaporator refrigerant resistance is reduced, the low pressure is improved, and the outdoor unit electronic expansion valve EEV outer opening degree is further reduced, and the system high pressure is improved to improve the heating capacity.

[0070] Reference Figure 4 , Figure 4 is a flowchart of a second embodiment of a control method of an air conditioner.

[0071] Based on the first embodiment, the air conditioner control method of the present embodiment comprises the following steps in step S20:

[0072] Step S201: detecting the ambient temperature of the space where the air conditioner is located, and comparing the ambient temperature with a temperature threshold range, the temperature threshold range being a threshold range greater than a first temperature threshold and less than a second temperature threshold, the first temperature threshold being less than the second temperature threshold.

[0073] It should be noted that the ambient temperature of the space where the air conditioner is located is first detected, and then the ambient temperature is compared with the temperature threshold range, which is composed of two end point temperature values, i.e. the first temperature threshold and the second temperature threshold, wherein the first temperature threshold is less than the second temperature threshold, and the value range between the first temperature threshold and the second temperature threshold is the temperature threshold range, the value of the first temperature threshold can be selected from -7 to 0, and the value of the second temperature threshold can be selected from 15 to 20.

[0074] Step S202: when the ambient temperature is in the temperature threshold range, connecting the economizer auxiliary path outlet and the compressor, disconnecting the economizer auxiliary path outlet and the gas-liquid separator, and obtaining the economizer auxiliary path superheat degree.

[0075] It should be understood that when it is determined that the ambient temperature is in the temperature threshold range, SV1 is closed, then SV2 is opened, the economizer auxiliary path outlet is connected with the compressor, then the economizer auxiliary path outlet is connected with the gas-liquid separator, and then the economizer auxiliary path superheat degree is obtained, the economizer auxiliary path superheat degree being T DSH-1 = degree T 1b- T 1a .

[0076] Step S203: comparing the economizer auxiliary path superheat degree with a first demand threshold, and adjusting the opening degree of the electronic expansion valve according to the comparison result.

[0077] In specific implementation, the first demand threshold is a pre-set demand threshold, which can be 3-6.

[0078] It should be noted that the economizer auxiliary path superheat degree is first compared with the first demand threshold, so that the difference can be obtained, and then the opening degree adjustment strategy of the electronic expansion valve is determined according to the difference.

[0079] Further, in order to accurately adjust the opening degree of the electronic expansion valve, first, the temperature difference between the economizer auxiliary path superheat degree and the first demand threshold value is calculated according to the comparison result, and then the temperature difference is compared with a plurality of preset comparison parameters to determine how to adjust the electronic expansion valve.

[0080] It should be understood that the size relationship of the economizer auxiliary path superheat degree, the first demand threshold value and each preset comparison parameter can be obtained according to the temperature difference. When T DSH-1 > the first demand threshold value, adjust as follows: T DSH-1 > the first demand threshold value + m, EEV1 current opening degree + 2Y. T DSH-1 > the first demand threshold value + n, EEV1 current opening degree + Y. The first demand threshold value < T DSH-1 ≤ the first demand threshold value + n, EEV1 current opening degree is maintained. Wherein Y is a preset comparison parameter value set according to needs (4~16 can be advanced), and m and n are also preset comparison parameters, m > n > 1. When T DSH-1 ≤ the first demand threshold value, adjust as follows: the first demand threshold value - 2 ≤ T DSH-1 ≤ the first demand threshold value, EEV1 maintains the current opening degree. T DSH-1 < the first demand threshold value - 2, EEV1 current opening degree - Y. T DSH-1 = 0, EEV1 current opening degree - 3Y.

[0081] In a specific implementation, during the EEV1 adjustment according to the superheat degree, if the exhaust gas superheat degree T DSH < the minimum value required by the compressor, EEV1 is immediately adjusted as follows: EEV1 = current opening degree - 3Y, and the adjustment is performed every 30 seconds.

[0082] The embodiment realizes jet enthalpy increase by opening the second electromagnetic valve to guide the refrigerant into the medium pressure cavity of the compressor under the condition that the temperature is at a medium or low temperature, so that the best effect of enthalpy increase is realized under the medium or low temperature condition.

[0083] Reference Figure 5 , Figure 5 is a flowchart of a third embodiment of a control method of an air conditioner.

[0084] Based on the above-mentioned first embodiment, the air conditioner control method of the embodiment comprises the following steps in step S20:

[0085] Step S21: detecting the ambient temperature of the space where the air conditioner is located, and comparing the ambient temperature with a temperature threshold range, the temperature threshold range being a threshold range less than a first temperature threshold value and less than a second temperature threshold value, the first temperature threshold value being less than the second temperature threshold value.

[0086] It should be noted that the ambient temperature of the space where the air conditioner is located is first detected, and then the ambient temperature is compared with a temperature threshold range, which is composed of two end temperature values, i.e., a first temperature threshold and a second temperature threshold, wherein the first temperature threshold is less than the second temperature threshold, and the value range between the first temperature threshold and the second temperature threshold is the temperature threshold range, the value of the first temperature threshold can be selected from -7 to 0, and the value of the second temperature threshold can be selected from 15 to 20.

[0087] Step S22: When the ambient temperature is not in the temperature threshold range and the ambient temperature is less than or equal to the first temperature threshold, disconnect the economizer auxiliary path outlet from the compressor, connect the economizer auxiliary path outlet to the gas-liquid separator, and obtain the main path inlet temperature and the main path outlet temperature of the economizer.

[0088] It should be understood that when the ambient temperature is not in the temperature threshold range and the ambient temperature is less than or equal to the first temperature threshold, SV1 is opened and SV2 is closed, so as to disconnect the economizer auxiliary path outlet from the compressor and connect the economizer auxiliary path outlet to the gas-liquid separator.

[0089] In a specific implementation, after the path adjustment, the main path inlet temperature and the main path outlet temperature of the economizer are obtained by the temperature sensor.

[0090] Step S23: Adjust the opening degree of the electronic expansion valve according to the main path inlet temperature, the main path outlet temperature, the ambient temperature, a second demand threshold and a third demand threshold.

[0091] It should be noted that the main path inlet temperature, the main path outlet temperature and the ambient temperature are obtained, and then a pre-set second demand threshold and a third demand threshold are obtained, so as to compare the ambient temperature with the second demand threshold, then calculate the main path temperature difference from the main path inlet temperature and the main path outlet temperature, so as to compare the main path temperature difference with the third demand threshold, and finally determine how to adjust the opening degree of the electronic expansion valve according to the two comparison results.

[0092] Further, in order to adjust the opening degree of the electronic expansion valve, first, compare the ambient temperature with the second demand threshold, i.e., perform a size comparison, to obtain a first comparison result, then obtain the difference between the main path inlet temperature and the main path outlet temperature as the main path temperature difference, compare the main path temperature difference with the third demand threshold to obtain a second comparison result, and finally determine the adjustment strategy in combination with the first comparison result and the second comparison result.

[0093] It should be understood that EEV1 is adjusted once every X seconds (X ranges from 30 to 60s), and the adjustment range is from minimum to 480P. When T4≤H℃ and T1-T2<D, EEV1 current opening + 3N. When H+13≤T4<H℃ and T1-T2<D-18, EEV1 current opening + 2N. When T1-T2>target value, EEV1 is closed N every 30s until ≤target value-2. Note: N is (16-24 optional). Wherein, H is the second demand threshold, and D is the third demand threshold.

[0094] In a specific implementation, EEV1 is controlled according to T4 temperature zone and T1-T2, that is, when T4≤H℃ (-13~-20℃ optional), the target demand is D=T1-T2. When H+13≤T4<H℃, the target demand T1-T2 is D-18. Note: the value of D is confirmed according to system configuration.

[0095] Further, as shown in Figure 6 the whole implementation process of the embodiment scheme is shown, in order to change the outdoor electronic expansion valve EEV outer opening and further reduce the system high pressure and improve the heating capacity, as shown in Figure 3 , first, an outdoor electronic expansion valve is arranged between the outdoor heat exchanger and the electronic expansion valve (the main path outlet of the economizer), and after step S23, the opening of the outdoor electronic expansion valve is adjusted with EEV1, EEVy is adjusted synchronously with EEV1, that is, from the current opening-m (48-64 optional), wherein m is the fourth opening. Then, according to the target discharge temperature adjustment, the preset adjustment time can be 60s, that is, adjusted once every 60s.

[0096] It should be noted that when T4>H+15℃ for 2min or more, EEV1 current opening is reduced to C opening for 1min, and then switched to the scheme when the ambient temperature is in the temperature threshold range and operated according to the step instructions, and EEV outer is adjusted from the current opening to the previous opening when the ambient temperature is not in the temperature threshold range and the ambient temperature is less than or equal to the first temperature threshold.

[0097] It should be understood that during the adjustment of EEV1, if T DSH <the minimum value required by the compressor for 1min, EEV1 is immediately closed, and when TDSH>10℃ is detected for 30s, the above process is adjusted again.

[0098] In a specific implementation, when the unit receives the defrosting and oil return signal, EEV2 is immediately closed, and after 5min, the above process is adjusted again.

[0099] It should be noted that the form and manner of adjusting the air conditioner jet enthalpy by the electronic expansion valve can improve the system efficiency and heating effect in the optimal effect and efficiency.

[0100] The embodiment realizes the air supplement at low temperature and the optimal enthalpy increase by introducing the refrigerant into the gas-liquid separator, that is, the low-pressure side return gas side by opening the first electromagnetic valve at low temperature.

[0101] In addition, the embodiment of the present application also provides a storage medium, wherein the storage medium stores an air conditioner control program, and the air conditioner control program realizes the steps of the air conditioner control method as described above when executed by a processor.

[0102] Since the storage medium adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0103] Reference Figure 5 , Figure 5 is a structural block diagram of the first embodiment of the air conditioner control device of the present application.

[0104] As Figure 5 shown, the air conditioner control device provided by the embodiment of the present application comprises:

[0105] The superheat adjustment module 10 is configured to disconnect the connection between the economizer auxiliary path outlet and the compressor, connect the connection between the economizer auxiliary path outlet and the gas-liquid separator, and open the electronic expansion valve when the air conditioner meets the heating adjustment condition.

[0106] In the embodiment, the execution subject of the embodiment can be the air conditioner, which has functions of data processing, data communication and program running, and can be any type of air conditioner. Of course, it can also be other devices with similar functions, which are not limited by the embodiment. For the convenience of description, the embodiment is described by taking the air conditioner as an example.

[0107] It should be understood that Figure 3 is a structural schematic diagram of the air conditioner in the embodiment, wherein T DSH is the exhaust gas superheat degree, T P is the exhaust gas temperature, T DSH-1 is the economizer auxiliary path superheat degree T 1b -T 1a , T 1a is the economizer auxiliary path inlet temperature, and T 1bEconomizer auxiliary road export temperature, T1, economizer main road import temperature, T2, economizer main road export temperature, EEV is an outdoor electronic expansion valve, EEV1 is a combined jet enhancement electronic expansion valve, that is, the electronic expansion valve in the embodiment, SV1 and SV2 are first and second solenoid valves, respectively.

[0108] It should be understood that at present, from winter to winter, various air conditioning manufacturers will face various problems of poor heating effect, and the situation will be more severe in cold winter. How to improve the heating capacity of the currently marketed products to improve the heating means is generally: 1. Small capacity sales with large capacity units, but this measure is high in cost and high in noise. 2. Increase the power of the indoor unit to supplement the heating. But this scheme has poor energy efficiency, and the user's use cost increases significantly. 3. Develop a jet enhancement system to improve low-temperature heating capacity. But this scheme still has high heating cost and effect in the current application scenario. The jet enhancement control of the air conditioner using the scheme of the embodiment does not need to use a large-capacity unit to make a small capacity, the cost can be reduced by 20-30%, the noise is small, and the user experience effect is better. The high-power electric auxiliary heating can be cancelled, the cost increase is small, the safety and reliability are improved, and the user's heating cost is also reduced by 5-10%. The user's freshness is increased, which can drive new growth.

[0109] In a specific implementation, the heating adjustment condition is to determine whether the current state of the air conditioner can be over-heated and the subsequent enhancement operation, and the heating adjustment condition is determined based on the running state and the exhaust temperature of the air conditioner.

[0110] It should be noted that the connection between the outlet of the economizer auxiliary road and the compressor is disconnected, and the connection between the outlet of the economizer auxiliary road and the gas-liquid separator is connected, which is realized by opening and closing of the solenoid valve.

[0111] Further, in order to accurately overheat adjustment, as shown in Figure 3 The air conditioner further comprises a first solenoid valve and a second solenoid valve, and the determination of whether the air conditioner meets the heating adjustment condition is mainly determined by judging: after the air conditioner receives a start signal to start running, it is in a heating mode, and has run for a preset time length, and the exhaust temperature of the compressor of the air conditioner is less than a preset exhaust temperature threshold, at this time, it is determined that the air conditioner meets the heating adjustment condition, and if any of the above conditions is not met, it is determined that the heating adjustment condition is not met, wherein the preset time length can be 5 minutes, or any running time, which is not limited in the embodiment; the preset exhaust temperature threshold can be set to 90, or other integer values, which are not limited in the embodiment.

[0112] It should be understood that when it is determined that the air conditioner meets the heating adjustment condition, the first electromagnetic valve is closed, and the second electromagnetic valve is opened, so as to realize that the compressor is connected to the auxiliary road outlet of the economizer, and the gas-liquid separator is disconnected from the auxiliary road outlet of the economizer.

[0113] In a specific implementation, after the adjustment of the first electromagnetic valve and the second electromagnetic valve, the opening degree of the electronic expansion valve is adjusted again, and the adjustment is performed every preset adjustment time length, which can be any time length (for example, 1 min), which is not limited in the embodiment, and the first opening degree, the second opening degree and the third opening degree are opening degrees that are sequentially increased and are multiples of 4, for example: the first opening degree, the second opening degree and the third opening degree are X, X+16 and X+32 respectively.

[0114] In this way, the opening degree of the electronic expansion valve is adjusted in the preparation stage to adjust the superheat according to the target change.

[0115] The jet enthalpy adjustment module 20 is configured to detect the ambient temperature of the space where the air conditioner is located, compare the ambient temperature with the temperature threshold range, and adjust the opening degree of the electronic expansion valve according to the comparison result, so as to adjust the jet enthalpy form of the air conditioner through the electronic expansion valve and improve the system heating capacity.

[0116] It should be noted that after the superheat adjustment, the temperature of the space where the air conditioner is located is obtained as the ambient temperature, and then the ambient temperature and the temperature threshold range are compared, so that the opening degree of the electronic expansion valve is adjusted according to the comparison result, so as to select the best jet enthalpy form to improve the system efficiency according to the different ambient temperatures.

[0117] It should be understood that when the ambient temperature is in the temperature threshold range, if T DSH >10℃ for 30s, EEV1 is restored according to the superheat, and receives defrosting, fault shutdown, temperature reaching shutdown, EVI inlet or outlet sensor fault signal and the like, EEV1 is closed and the count is cleared.

[0118] In a specific implementation, when the ambient temperature is not in the temperature threshold range, the defrosting and oil return signals are received, EEV2 is immediately closed, and after 5 min, the adjustment is performed again according to the above process.

[0119] The embodiment first adjusts the superheat degree when the air conditioner meets the heating adjustment condition, then detects the ambient temperature of the space where the air conditioner is located, and adjusts the opening degree of the electronic expansion valve according to the comparison result of the ambient temperature and the temperature threshold range, further improves the heating capacity on the basis of the jet augmenting system, changes the jet augmenting form under different ambient temperatures, reduces the refrigerant resistance of the evaporator, improves the low pressure, and changes the EEV opening degree of the outdoor unit, so that the EEV opening degree can be further reduced, the system high pressure is improved, and the heating capacity is improved.

[0120] It should be understood that the above is only an example, and does not constitute any limitation on the technical solutions of the present application. In specific applications, those skilled in the art can set up according to the needs, and the present application does not limit this.

[0121] It should be noted that the above-described workflow is only illustrative and does not limit the scope of the present application. In actual application, those skilled in the art can select part or all of them to achieve the purpose of the embodiment scheme according to actual needs, which is not limited here.

[0122] In addition, technical details not described in detail in the embodiment can refer to the air conditioner control method provided by any embodiment of the present application, which will not be repeated here.

[0123] In addition, it should be noted that in this document, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or system. Without more limitations, the element defined by the statement "includes a" does not exclude the presence of other identical elements in the process, method, article or system including the element.

[0124] The above-mentioned embodiment number of the present application is only for description, not representing the advantages and disadvantages of the embodiments.

[0125] Those skilled in the art can clearly understand the above-mentioned example method can be realized by means of software and the necessary general hardware platform, of course, also can be through hardware, but in many cases the former is a better implementation. Based on such understanding, the technical solutions of the present application essentially or say the part of the prior art contribution can be embodied in the form of software products, the computer software product is stored in a storage medium (such as read only memory (Read Only Memory, ROM) / RAM, disk, optical disc), including a number of instructions to make a terminal device (may be a mobile phone, computer, server, or network equipment, etc.) executes the method described in various embodiments of the present application.

[0126] The above is only the preferred embodiment of the present application, not therefore limit the patent scope of the present application, any equivalent structure or equivalent flow transformation made by using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An air conditioner control method characterized by comprising: The air conditioner control method is used for an air conditioner, the air conditioner comprising an economizer, a gas-liquid separator, an outdoor heat exchanger, an indoor heat exchanger, a compressor and an electronic expansion valve, the electronic expansion valve being connected with the outdoor heat exchanger and an auxiliary path inlet of the economizer respectively, a main path inlet of the economizer being connected with the indoor heat exchanger, a main path outlet of the economizer being connected with the outdoor heat exchanger, an auxiliary path outlet of the economizer being connected with the gas-liquid separator and the compressor, the air conditioner further comprising a first electromagnetic valve and a second electromagnetic valve, the first electromagnetic valve being connected with the auxiliary path outlet of the economizer and the gas-liquid separator respectively, the second electromagnetic valve being connected with the auxiliary path outlet of the economizer and the compressor respectively; The air conditioner control method comprises: When the air conditioner meets a heating adjustment condition, connecting the connection between the auxiliary path outlet of the economizer and the compressor, disconnecting the connection between the auxiliary path outlet of the economizer and the gas-liquid separator, and opening the electronic expansion valve, comprising: when the air conditioner is in a heating mode and runs for a preset time length, if the exhaust temperature of the air conditioner is less than a preset exhaust temperature threshold, it is determined that the air conditioner meets the heating adjustment condition, the first electromagnetic valve is closed to connect the connection between the auxiliary path outlet of the economizer and the compressor, and the second electromagnetic valve is opened to disconnect the connection between the auxiliary path outlet of the economizer and the gas-liquid separator; the opening of the electronic expansion valve is adjusted to a first opening, a second opening and a third opening in turn every interval of a preset adjustment time length, the first opening is less than the second opening, and the second opening is less than the third opening; Detecting the ambient temperature of the space where the air conditioner is located, comparing the ambient temperature with a temperature threshold range, and adjusting the opening of the electronic expansion valve according to the comparison result, so as to adjust the jet gas enthalpy form of the air conditioner through the electronic expansion valve and improve the system heating capacity.

2. The air conditioner control method of claim 1, wherein, The detection of the ambient temperature of the space where the air conditioner is located, the comparison of the ambient temperature with a temperature threshold range, and the adjustment of the opening of the electronic expansion valve according to the comparison result, comprising: Detecting the ambient temperature of the space where the air conditioner is located, comparing the ambient temperature with a temperature threshold range, the temperature threshold range being a threshold range greater than a first temperature threshold and less than a second temperature threshold, the first temperature threshold being less than the second temperature threshold; When the ambient temperature is in the temperature threshold range, connecting the connection between the auxiliary path outlet of the economizer and the compressor, disconnecting the connection between the auxiliary path outlet of the economizer and the gas-liquid separator, and obtaining the economizer auxiliary path superheat degree; Comparing the economizer auxiliary path superheat degree with a first demand threshold, and adjusting the opening of the electronic expansion valve according to the comparison result.

3. The air conditioner control method of claim 2, wherein, The adjustment of the opening of the electronic expansion valve according to the comparison result, comprising: Determining the temperature difference between the economizer auxiliary path superheat degree and the first demand threshold according to the comparison result; Comparing the temperature difference with a plurality of preset comparison parameters, and adjusting the opening of the electronic expansion valve according to the comparison result.

4. The air conditioner control method of claim 1, wherein, The detecting the ambient temperature of the space where the air conditioner is located, comparing the ambient temperature with a temperature threshold range, and adjusting the opening degree of the electronic expansion valve according to the comparison result, comprises: detecting the ambient temperature of the space where the air conditioner is located, comparing the ambient temperature with a temperature threshold range, the temperature threshold range is a threshold range less than a first temperature threshold and less than a second temperature threshold, the first temperature threshold is less than the second temperature threshold; when the ambient temperature is not in the temperature threshold range and the ambient temperature is less than or equal to the first temperature threshold, disconnecting the connection between the economizer auxiliary road outlet and the compressor, connecting the connection between the economizer auxiliary road outlet and the gas-liquid separator, and obtaining the main road inlet temperature and the main road outlet temperature of the economizer; adjusting the opening degree of the electronic expansion valve according to the main road inlet temperature, the main road outlet temperature, the ambient temperature, the second demand threshold and the third demand threshold.

5. The air conditioner control method according to claim 4, wherein The adjustment of the opening degree of the electronic expansion valve according to the main road inlet temperature, the main road outlet temperature, the ambient temperature, the second demand threshold and the third demand threshold, comprises: comparing the ambient temperature with the second demand threshold to obtain a first comparison result; calculating the main road temperature difference of the economizer according to the main road inlet temperature and the main road outlet temperature; comparing the main road temperature difference with the third demand threshold to obtain a second comparison result; adjusting the opening degree of the electronic expansion valve according to the first comparison result and the second comparison result.

6. The air conditioner control method according to claim 4, wherein The air conditioner further comprises an outdoor electronic expansion valve, one end of the outdoor electronic expansion valve is connected with an outdoor heat exchanger, the other end of the outdoor electronic expansion valve is connected with the electronic expansion valve and the main road outlet of the economizer; after adjusting the opening degree of the electronic expansion valve according to the main road inlet temperature, the main road outlet temperature, the ambient temperature, the second demand threshold and the third demand threshold, further comprising: after adjusting the opening degree of the electronic expansion valve, reducing the opening degree of the outdoor electronic expansion valve by a fourth opening degree, and adjusting the outdoor electronic expansion valve according to a target exhaust temperature every interval of a preset adjustment time.

7. An air conditioner control device characterized by comprising: The air conditioner comprises: an economizer, a gas-liquid separator, an outdoor heat exchanger, an indoor heat exchanger, a compressor and an electronic expansion valve, the electronic expansion valve is connected with the outdoor heat exchanger and the auxiliary road inlet of the economizer respectively, the main road inlet of the economizer is connected with the indoor heat exchanger, the main road outlet of the economizer is connected with the outdoor heat exchanger, the auxiliary road outlet of the economizer is connected with the gas-liquid separator and the compressor, the air conditioner further comprises a first electromagnetic valve and a second electromagnetic valve, the first electromagnetic valve is connected with the auxiliary road outlet of the economizer and the gas-liquid separator respectively, and the second electromagnetic valve is connected with the auxiliary road outlet of the economizer and the compressor respectively; the air conditioner control device comprises: The superheat adjustment module is configured to connect the economizer auxiliary path outlet with the compressor, disconnect the economizer auxiliary path outlet with the gas-liquid separator, and open the electronic expansion valve when the air conditioner meets the heating adjustment condition. The superheat adjustment module includes: when the air conditioner is in the heating mode and runs for a preset time length, if the exhaust temperature of the air conditioner is less than a preset exhaust temperature threshold, it is determined that the air conditioner meets the heating adjustment condition, the first electromagnetic valve is closed to connect the economizer auxiliary path outlet with the compressor, and the second electromagnetic valve is opened to disconnect the economizer auxiliary path outlet with the gas-liquid separator; the opening degree of the electronic expansion valve is adjusted to a first opening degree, a second opening degree and a third opening degree in sequence every interval of a preset adjustment time length, the first opening degree is less than the second opening degree, and the second opening degree is less than the third opening degree; The jet enthalpy adjustment module is configured to detect the ambient temperature of the space where the air conditioner is located, compare the ambient temperature with a temperature threshold range, and adjust the opening degree of the electronic expansion valve according to the comparison result, so as to adjust the jet enthalpy form of the air conditioner through the electronic expansion valve and improve the system heating capacity.

8. An air conditioner characterized by comprising: The air conditioner includes a memory, a processor, and an air conditioner control program stored on the memory and running on the processor, and the air conditioner control program is configured to implement the air conditioner control method of any one of claims 1 to 6.

9. A storage medium, characterized by The storage medium stores an air conditioner control program, and the air conditioner control program is executed by the processor to implement the air conditioner control method of any one of claims 1 to 6.

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