CN-122015364-A - Control method and device of air source heat pump unit, storage medium and electronic equipment

CN122015364ACN 122015364 ACN122015364 ACN 122015364ACN-122015364-A

Abstract

The application discloses a control method, a device, a storage medium and electronic equipment of an air source heat pump unit, and relates to the technical field of heat pumps, wherein the method comprises the steps of calculating a temperature change value of inlet water temperature when inlet water and outlet water temperature difference, outdoor environment temperature or evaporation temperature meet preset first conditions; and if the unit heating capacity meets the preset second condition, controlling the air source heat pump unit to execute a preset defrosting action. The application can effectively improve the defrosting reliability of the air source heat pump unit.

Inventors

SONG KAI
LIN SENRONG
XIONG JUN
Zheng Shenan

Assignees

广东TCL智能暖通设备有限公司

Dates

Publication Date: 20260512
Application Date: 20260304

Claims (10)

1. The control method of the air source heat pump unit is characterized by comprising the following steps: when the inlet-outlet water temperature difference, the outdoor environment temperature or the evaporation temperature meets a preset first condition, calculating a temperature variation value of the inlet water temperature; determining whether the unit heating capacity meets a preset second condition according to the temperature change value; And if the unit heating capacity meets the preset second condition, controlling the air source heat pump unit to execute a preset defrosting action.
2. The method of claim 1, wherein when the water inlet-outlet temperature difference, the outdoor ambient temperature, or the evaporation temperature satisfies a preset first condition, comprising: When the water inlet and outlet temperature difference is smaller than a temperature difference threshold value, and the length of the unit is longer than or equal to a preset first duration or the temperature difference change rate of the water inlet and outlet temperature difference is larger than a preset change rate, the preset first condition is met; or when the outdoor environment temperature is smaller than the preset environment temperature and the unit operation time length is longer than or equal to a preset second time length, the preset first condition is met; or when the evaporation temperature is smaller than a first temperature threshold value, the preset first condition is met.
3. The method of claim 2, wherein the temperature difference threshold comprises: multiplying an initial reference temperature difference by a preset temperature difference correction coefficient to obtain the temperature difference threshold, wherein the initial reference temperature difference is the water inlet and outlet temperature difference when the starting operation of the air source heat pump unit reaches a preset stable operation duration; Or determining a preset temperature difference value as the temperature difference threshold value.
4. The method of claim 2, wherein the first temperature threshold comprises: Subtracting a preset temperature correction value from the outdoor environment temperature to obtain the first temperature threshold; or determining a preset temperature value as the first temperature threshold.
5. The method of claim 1, wherein the temperature change value comprises a feed water temperature difference between the feed water temperatures of adjacent sampling times and a rate of temperature change of the feed water temperature; determining whether the unit heating capacity meets a preset second condition according to the temperature change value comprises the following steps: Determining whether the water inlet temperature is smaller than or equal to a second temperature threshold value, wherein the second temperature threshold value is equal to the set temperature multiplied by a preset temperature correction coefficient; if the water inlet temperature is smaller than or equal to the second temperature threshold, determining whether the unit heating capacity meets the preset second condition according to the water inlet temperature difference value and the temperature change rate; if the water inlet temperature is greater than the second temperature threshold, determining whether the unit heating capacity meets the preset second condition according to the water inlet temperature difference value.
6. The method of claim 5, wherein said determining whether said unit heating capacity meets said preset second condition based on said inlet water temperature difference and said temperature change rate comprises: When the water inlet temperature difference is smaller than zero, determining that the unit heating capacity meets the preset second condition; and when the water inlet temperature difference value is greater than or equal to zero and the temperature change rate is smaller than a preset rate, determining that the unit heating capacity meets the preset second condition.
7. The method of claim 5, wherein determining whether the unit heating capacity meets the preset second condition based on the inlet water temperature difference comprises: and when the water inlet temperature difference is smaller than zero, determining that the unit heating capacity meets the preset second condition.
8. A control device of an air source heat pump unit, comprising: The calculation module is used for calculating a temperature change value of the water inlet temperature when the water inlet and outlet temperature difference, the outdoor environment temperature or the evaporation temperature meets a preset first condition; The determining module is used for determining whether the unit heating capacity meets a preset second condition according to the temperature change value; and the execution module is used for controlling the air source heat pump unit to execute a preset defrosting action if the unit heating capacity meets the preset second condition.
9. A storage medium having stored thereon a computer program which, when executed by a processor of an electronic device, causes the electronic device to perform the method of any of claims 1 to 7.
10. An electronic device comprising a memory storing a computer program, and a processor reading the computer program stored in the memory to perform the method of any one of claims 1 to 7.

Description

Control method and device of air source heat pump unit, storage medium and electronic equipment Technical Field The application relates to the technical field of heat pumps, in particular to a control method and device of an air source heat pump unit, a storage medium and electronic equipment. Background The defrosting strategy of the traditional air source heat pump unit is to detect single factors such as outdoor environment temperature and the like, and trigger defrosting according to whether the single factors meet single conditions. According to the traditional mode, defrosting is easy to trigger under the conditions of serious frosting, temperature point failure and the like in high-temperature and high-humidity weather, so that the performance of the unit is seriously reduced, and defrosting is easy to trigger under the conditions of no frosting, very thin frosting layer and the like in low-temperature and dry weather, so that energy waste and comfort level fluctuation are caused. Therefore, the defrosting strategy of the traditional air source heat pump unit has the problem of poor defrosting reliability. Disclosure of Invention The embodiment of the application provides a control scheme of an air source heat pump unit, which can effectively improve the defrosting reliability of the air source heat pump unit. The embodiment of the application provides the following technical scheme: According to one embodiment of the application, the control method of the air source heat pump unit comprises the steps of calculating a temperature change value of a water inlet temperature when a water inlet and outlet temperature difference, an outdoor environment temperature or an evaporation temperature meet a preset first condition, determining whether unit heating capacity meets a preset second condition according to the temperature change value, and controlling the air source heat pump unit to execute a preset defrosting action if the unit heating capacity meets the preset second condition. In some embodiments of the present application, when the temperature difference between the inlet water and the outlet water, the outdoor ambient temperature or the evaporation temperature meets a preset first condition, the preset first condition is met when the temperature difference between the inlet water and the outlet water is smaller than a temperature difference threshold value and the unit operation time is longer than or equal to a preset first time period or the temperature difference change rate of the temperature difference between the inlet water and the outlet water is larger than a preset change rate, or the preset first condition is met when the outdoor ambient temperature is smaller than the preset ambient temperature and the unit operation time is longer than or equal to a preset second time period, or the evaporation temperature is smaller than a first temperature threshold value. In some embodiments of the application, the temperature difference threshold comprises the step of multiplying an initial reference temperature difference by a preset temperature difference correction coefficient to obtain the temperature difference threshold, wherein the initial reference temperature difference is the water inlet and outlet temperature difference when the starting operation of the air source heat pump unit reaches a preset stable operation duration, or the preset temperature difference is determined to be the temperature difference threshold. In some embodiments of the present application, the first temperature threshold includes subtracting a preset temperature correction value from the outdoor ambient temperature to obtain the first temperature threshold, or determining a preset temperature value as the first temperature threshold. In some embodiments of the present application, the temperature change value includes a temperature difference value between the water inlet temperatures of adjacent sampling times and a temperature change rate of the water inlet temperatures, and the determining whether the unit heating capacity meets a preset second condition according to the temperature change value includes determining whether the water inlet temperature is equal to or less than a second temperature threshold value, the second temperature threshold value being equal to a preset temperature multiplied by a preset temperature correction coefficient, determining whether the unit heating capacity meets the preset second condition according to the water inlet temperature difference value and the temperature change rate if the water inlet temperature is equal to or less than the second temperature threshold value, and determining whether the unit heating capacity meets the preset second condition according to the water inlet temperature difference value if the water inlet temperature is greater than the second temperature threshold value. In some embodiments of the present application, the determining whether the unit