CN-116085981-B - Method and device for controlling air conditioner, air conditioner and storage medium

CN116085981BCN 116085981 BCN116085981 BCN 116085981BCN-116085981-B

Abstract

The application discloses a method for controlling an air conditioner, which comprises an indoor side circulation loop, an energy storage device and an air conditioner control device, wherein the indoor side circulation loop comprises a water pump, an intermediate heat exchanger, a first electronic expansion valve and an indoor unit, the medium inflow end of the first electronic expansion valve is sequentially arranged along the medium flow direction during refrigeration, one end of the energy storage device is connected with the medium inflow end of the first electronic expansion valve, the other end of the energy storage device is connected with the medium inflow end of the water pump, the method comprises the steps of determining the actual temperature of the energy storage device when the working time period of the indoor unit is a first time period, closing the outdoor unit and determining the target temperature of the air conditioner and the indoor environment temperature when the actual temperature of the energy storage device meets the energy release condition, and controlling the opening degree of the first electronic expansion valve and the running frequency of the water pump according to the actual temperature of the energy storage device, the target temperature of the air conditioner and the indoor environment temperature. The application combines the operation frequency of the water pump and the adjustment of the opening of the electronic expansion valve to more accurately and reasonably control the flow in the circulation loop. The application also discloses a device for controlling the air conditioner, the air conditioner and a storage medium.

Inventors

LI KE
XU WENMING
WANG FEI
ZHANG XINYI
LI YANG

Assignees

青岛海尔空调器有限总公司
青岛海尔空调电子有限公司
海尔智家股份有限公司

Dates

Publication Date: 20260512
Application Date: 20230105

Claims (10)

1. A method for controlling an air conditioner is characterized by comprising an indoor side circulation loop, an energy storage device, a third electronic expansion valve, a fourth electronic expansion valve, a sixth electronic expansion valve, a seventh electronic expansion valve and a seventh electronic expansion valve, wherein the indoor side circulation loop is sequentially provided with a water pump, an intermediate heat exchanger, a first electronic expansion valve and an indoor unit along the medium flow direction, one end of the energy storage device is connected with the medium inflow end of the first electronic expansion valve, the other end of the energy storage device is connected with the medium inflow end of the water pump, the third electronic expansion valve is arranged between the water pump and the intermediate heat exchanger, the fourth electronic expansion valve is arranged between the indoor unit and the water pump, the sixth electronic expansion valve is arranged between the energy storage device and the medium outflow end of the fourth electronic expansion valve, one end of the seventh electronic expansion valve is connected between the water pump and the third electronic expansion valve, and the other end of the seventh electronic expansion valve is connected between the energy storage device and the sixth electronic expansion valve, and the method comprises the steps of: determining the actual temperature of the energy storage device under the condition that the working period of the indoor unit is a first period; under the condition that the actual temperature of the energy storage device meets the energy release condition, the outdoor unit is controlled to be closed, the third electronic expansion valve and the sixth electronic expansion valve are closed, and the opening of the fourth electronic expansion valve and the seventh electronic expansion valve are the largest; Controlling the opening degree of the first electronic expansion valve and the operation frequency of the water pump according to the actual temperature of the energy storage device, the target temperature of the air conditioner and the indoor environment temperature, wherein the opening degree of the first electronic expansion valve is controlled to be k1max and the operation frequency of the water pump is f1max multiplied by a when the actual temperature of the energy storage device is less than or equal to 2|delta T| <5 and the indoor environment temperature is less than or equal to 2, the opening degree of the first electronic expansion valve is controlled to be k1max and the operation frequency of the water pump is f1max when the actual temperature of the energy storage device is less than or equal to 2|delta T| <5 and the operation frequency of the water pump is less than or equal to 2, the opening degree of the first electronic expansion valve is controlled to be k1max when the actual temperature of the energy storage device is less than or equal to 2|delta T| <1 and the operation frequency of the water pump is less than or equal to 2, the opening degree of the first electronic expansion valve is controlled to be k1max when the actual temperature of the energy storage device is less than or equal to 2|delta T| <5 and the operation frequency of the indoor environment is less than or equal to 2, the opening degree of the first electronic expansion valve is controlled to k1max when the operation frequency of the water pump is less than or equal to 1max and the operation frequency of the first electronic expansion valve is less than or equal to 2, the operation frequency of the delta T|T| <1 is less than or equal to 2, the operation frequency is the first electric valve is controlled to 1max; Wherein DeltaT is the temperature difference between the indoor environment temperature and the target temperature of the air conditioner, dt is the temperature difference between the actual temperature of the energy storage device and the limiting use temperature of the energy storage device, k1max is the maximum opening of the first electronic expansion valve, f1max is the highest running frequency of the water pump, f1min is the lowest running frequency of the water pump, and 0< b <1,0< a <1.
2. The method of claim 1, wherein the first period is a power consumption peak period or a user-defined period.
3. The method of claim 1, wherein the step of determining the position of the substrate comprises, Under the refrigeration working condition, if T0 is less than or equal to Tup, the actual temperature of the energy storage device meets the energy release condition; under the heating working condition, if T0 is more than or equal to Tlow, the actual temperature of the energy storage device meets the energy release condition; wherein T0 is the actual temperature of the energy storage device, tup is the upper limit use temperature of the refrigeration working condition energy storage device, and Tlow is the lower limit use temperature of the heating working condition energy storage device.
4. The method of claim 1, wherein controlling the first electronic expansion valve opening and the water pump operating frequency based on the actual temperature of the energy storage device, the air conditioning target temperature, and the indoor ambient temperature, further comprises: and controlling the opening degree of the first electronic expansion valve to be k1max and the running frequency of the water pump to be f1max under the condition that the I delta T I is not less than 5.
5. The method of claim 1, wherein Δt = Tr-Tset, tr being an indoor ambient temperature, tset being an air conditioning target temperature.
6. The method according to any one of claims 1 to 5, wherein the indoor-side circulation circuit further includes a second electronic expansion valve provided between the first electronic expansion valve and the intermediate heat exchanger, a fifth electronic expansion valve having one end connected to the energy storage device and the other end connected between the first electronic expansion valve and the second electronic expansion valve, and the method further includes: and under the conditions that the working period of the indoor unit is a first period, the outdoor unit is closed and the working condition of the energy storage device is energy release, the second electronic expansion valve is controlled to be closed, and the opening of the fifth electronic expansion valve is maximum.
7. An apparatus for controlling an air conditioner comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for controlling an air conditioner according to any one of claims 1 to 6 when the program instructions are run.
8. An air conditioner, characterized in that, under refrigeration conditions, the air conditioner comprises: The indoor side circulation loop is sequentially provided with a water pump, an intermediate heat exchanger, a first electronic expansion valve and an indoor unit along the medium flow direction; One end of the energy storage device is connected with the medium inflow end of the first electronic expansion valve, and the other end of the energy storage device is connected with the medium inflow end of the water pump; the third electronic expansion valve is arranged between the water pump and the intermediate heat exchanger; the fourth electronic expansion valve is arranged between the indoor unit and the water pump; the sixth electronic expansion valve is arranged between the energy storage device and the medium outflow end of the fourth electronic expansion valve; A seventh electronic expansion valve, one end of which is connected between the water pump and the third electronic expansion valve, and the other end of which is connected between the energy storage device and the sixth electronic expansion valve, The apparatus for controlling an air conditioner as claimed in claim 7.
9. The air conditioner of claim 8, wherein the indoor side circulation loop further comprises: The second electronic expansion valve is arranged between the first electronic expansion valve and the intermediate heat exchanger; And one end of the fifth electronic expansion valve is connected with the energy storage device, and the other end of the fifth electronic expansion valve is connected between the first electronic expansion valve and the second electronic expansion valve.
10. A storage medium storing program instructions which, when executed, perform the method for controlling an air conditioner according to any one of claims 1 to 6.

Description

Method and device for controlling air conditioner, air conditioner and storage medium Technical Field The application relates to the technical field of refrigeration intelligent household appliances, in particular to a method and a device for controlling an air conditioner, the air conditioner and a storage medium. Background Currently, in the application of household appliances, in order to separate the refrigerant circulation circuit and the water circulation circuit from each other, heat exchange between the two circulation circuits is achieved by an intermediate heat exchanger. Specifically, as shown in fig. 1, for example, a water pump 1, an intermediate heat exchanger 2, a first stop valve 3, and an indoor unit 4 are sequentially disposed in the water circulation loop along the water flow direction, and a compressor 5, an outdoor unit 6, a second stop valve 7, and an intermediate heat exchanger 2 are sequentially disposed in the refrigerant circulation loop along the refrigerant flow direction. The water and the refrigerant exchange heat in the intermediate heat exchanger and flow in opposite directions. However, this has a problem of low energy efficiency of the system, and is difficult to meet the use requirements of users. In order to improve the energy efficiency of the system, the related art discloses a phase-change heat accumulating type heat supply system and a control method thereof, wherein the phase-change heat accumulating type heat supply system comprises the steps of controlling and switching control on heat accumulating operation of a heat accumulator, independent heat supply of the heat accumulator, independent hot water preparation of a heat pump, heating of the heat pump and combined heat supply mode of the heat accumulator. When the heat storage mode is required to be executed, the first stop valve, the second stop valve, the third stop valve and the three-way valve are controlled to be opened, the first stop valve and the three-way valve are controlled to be closed, when the independent heat storage mode is required to be executed, the second stop valve and the three-way valve are controlled to be opened, the second water pipe and the hot water outlet are controlled to be communicated (communicated, the first stop valve and the third stop valve are controlled to be closed, and when the combined heat supply mode of heat pump heating and heat storage is required to be executed, the first stop valve, the second stop valve, the third stop valve and the three-way valve are controlled to be opened, and the second water pipe and the hot water outlet are controlled to be communicated, and when the independent heat pump mode is required to be executed, the first stop valve, the third stop valve and the three-way valve are controlled to be opened, and the second water pipe and the hot water outlet are controlled to be communicated, and the second stop valve is controlled to be closed. In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: In the related art, only the opening and closing of the valve is controlled to switch the operation mode, so that the air conditioner cannot adjust the flow in the circulation loop according to the actual working condition. Therefore, no matter the flow required by the system is large or small, only the flow with the same size can be adopted, so that the energy saving is not facilitated, and the effect of improving the energy efficiency of the system is not obvious. It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art. Disclosure of Invention The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows. The embodiment of the disclosure provides a method and a device for controlling an air conditioner, the air conditioner and a storage medium, so that the flow in a circulation loop is set to be more fit with the actual working condition, and the air conditioner is further energy-saving. In some embodiments, a refrigeration working condition is taken as an example, the air conditioner comprises an indoor side circulation loop, an energy storage device and an air conditioner control device, wherein the indoor side circulation loop comprises a water pump, an intermediate heat exchanger, a first electronic expansion valve and an indoor machine, the medium inflow end of the first electronic expansion valve is sequentially arranged along the medium flow directio