CN-114992878-B - Starting control method of heat pump water heater, heat pump water heater and storage medium

CN114992878BCN 114992878 BCN114992878 BCN 114992878BCN-114992878-B

Abstract

The application belongs to the technical field of household appliances, and particularly relates to a starting control method of a heat pump water heater, the heat pump water heater and a storage medium, which are used for solving the technical problem of lack of the starting control method of an air source heat pump water heater capable of running in multiple modes in multiple different modes. The starting control method comprises the steps of determining whether the starting condition of a set starting mode is met according to the preset target temperature and the corresponding actual temperature in the set starting mode, switching the four-way reversing valve to a corresponding communication state according to the set starting mode if the starting condition of the set starting mode is met, and adjusting the first control valve, the second control valve and the third control valve to preset opening degrees. The application can improve the stability and reliability of the heat pump water heater when the heat pump water heater is started in a plurality of different modes.

Inventors

LIANG JIE
Guan Jiangyong

Assignees

青岛经济技术开发区海尔热水器有限公司
海尔智家股份有限公司

Dates

Publication Date: 20260508
Application Date: 20220428

Claims (9)

1. The starting control method of the heat pump water heater is characterized in that the heat pump water heater comprises a refrigerant circulation loop and a hot water tank; The refrigerant circulation loop comprises a compressor, a four-way reversing valve, a first heat exchanger, a second heat exchanger and a third heat exchanger, wherein one end of the first heat exchanger is connected with one end of the compressor through a first control valve and the four-way reversing valve in sequence, the other end of the first heat exchanger is connected with one end of the third heat exchanger through a second control valve, the other end of the third heat exchanger is connected with the other end of the compressor through the four-way reversing valve, one end of the second heat exchanger is connected between the output end of the compressor and the four-way reversing valve, the other end of the second heat exchanger is connected between the second control valve and the third heat exchanger through a third control valve, the first heat exchanger is used for enabling the refrigerant in the first heat exchanger to exchange heat with the indoor environment, the second heat exchanger is used for enabling the refrigerant in the second heat exchanger to exchange heat with the hot water tank, and the third heat exchanger is used for enabling the refrigerant in the second heat exchanger to exchange heat with the outdoor environment; The starting control method comprises the following steps: determining whether a set starting condition of a starting mode is met according to a preset target temperature and a corresponding actual temperature in the set starting mode, wherein the starting mode is one of a heating water mode, a refrigerating mode, a heating mode or a heating water and heating mode, and the actual temperature comprises at least one of an actual hot water temperature in the hot water tank and an actual environment temperature corresponding to an indoor environment; If the set starting condition of the starting mode is met, switching the four-way reversing valve to a corresponding communication state according to the set starting mode, and adjusting the first control valve, the second control valve and the third control valve to preset opening degrees; When the starting mode is the water heating and heating mode, determining whether the starting condition of the set starting mode is met according to the preset target temperature and the corresponding actual temperature in the set starting mode comprises the following specific steps: determining whether a heating water starting condition of the heating water and heating mode is met according to the actual heating water temperature and the heating water target temperature set in the heating water and heating mode; determining whether heating starting conditions of the heating water and heating mode are met according to the actual environment temperature and the heating target temperature set in the heating water and heating mode; If the heating water starting conditions and the heating starting conditions of the heating water and the heating mode are simultaneously met, switching the four-way reversing valve to a corresponding communication state according to the set starting mode, and adjusting the first control valve, the second control valve and the third control valve to preset opening degrees, wherein the method specifically comprises the following steps: Switching the four-way reversing valve to a state that the output end of the compressor is communicated with the first heat exchanger and the input end of the compressor is communicated with the third heat exchanger, and adjusting the first control valve, the second control valve and the third control valve to preset opening degrees corresponding to the common starting state of the heating water and the heating mode; And after the first control valve, the second control valve and the third control valve are adjusted to preset opening degrees corresponding to the common starting state of the heating water and the heating mode and kept for a first preset time, the first control valve, the second control valve and the third control valve are adjusted to preset opening degrees corresponding to the common running state of the heating water and the heating mode.
2. The startup control method according to claim 1, wherein adjusting the first control valve, the second control valve, and the third control valve to preset opening degrees corresponding to a common startup state of the heating water and the heating mode specifically includes: Adjusting the first control valve, the second control valve and the third control valve to the maximum opening; Or the first control valve is adjusted to the maximum opening degree, the second control valve is adjusted to the preset opening degree corresponding to the common starting state of the heating water and the heating mode according to at least one of the frequency of the compressor, the outdoor temperature of the third heat exchanger and the difference value between the heating target temperature set in the heating water and the heating mode and the actual ambient temperature, and the third control valve is adjusted to the preset opening degree corresponding to the common starting state of the heating water and the heating mode according to at least one of the frequency of the compressor, the outdoor temperature of the third heat exchanger and the difference value between the heating target temperature set in the heating water and the heating mode and the actual hot water temperature.
3. The startup control method according to claim 2, wherein a preset opening degree of the second control valve, a frequency of the compressor, an outdoor temperature at the third heat exchanger, and a difference between a heating target temperature set in the heating water and heating modes and the actual environmental temperature, which correspond to a common startup state of the heating water and heating modes, satisfy the following relationship: Wherein, the For the preset opening of the second control valve corresponding to the common starting state of the heating water and the heating mode, For the frequency of the compressor in question, For the said outdoor temperature of the air, For the heating target temperature set in the heating water and heating mode, For the actual ambient temperature to be mentioned, 、、 And Is the corresponding adjustment coefficient; and/or the preset opening degree of the third control valve, the frequency of the compressor, the outdoor temperature at the third heat exchanger and the difference between the target temperature of heating water and the actual temperature of heating water set in the heating water and the heating mode, which correspond to the common starting state of the heating water and the heating mode, satisfy the following relationship: Wherein, the For the preset opening of the third control valve corresponding to the common starting state of the heating water and the heating mode, For the frequency of the compressor in question, For the said outdoor temperature of the air, For the heating water target temperature set in the heating water and heating mode, For the actual hot water temperature to be mentioned, 、、 And For the corresponding adjustment factor.
4. The start-up control method according to any one of claims 1 to 3, wherein if one of a heating water start-up condition and a heating start-up condition of the heating water and heating modes is satisfied separately, switching the four-way selector valve to a corresponding communication state according to the set start-up mode, and adjusting the first control valve, the second control valve, and the third control valve to preset opening degrees, specifically comprising: switching the four-way reversing valve to a state in which the output end of the compressor is communicated with the first heat exchanger and the input end of the compressor is communicated with the third heat exchanger; the first control valve and the third control valve are adjusted to the maximum opening degree according to the preferential heating water state of the heating water and the heating mode corresponding to the heating water starting conditions of the heating water and the heating mode which are independently met, or the first control valve and the second control valve are adjusted to the maximum opening degree according to the preferential heating state of the heating water and the heating mode corresponding to the heating water and the heating mode which are independently met; after the other one of the heating water start condition and the heating start condition of the heating water and the heating mode is satisfied, adjusting the first control valve, the second control valve, and the third control valve to a preset opening degree further includes: deactivating the heat pump water heater to a steady state; After the heat pump water heater is stopped to a steady state, determining whether the heating water starting condition of the heating water and the heating mode is met or not according to the actual hot water temperature and the heating water target temperature set in the heating water and the heating mode, and determining whether the heating starting condition of the heating water and the heating mode is met or not according to the actual environment temperature and the heating target temperature set in the heating water and the heating mode; If the heating water starting condition and the heating starting condition of the heating water and the heating mode are simultaneously met, the method comprises the following steps: Switching the four-way reversing valve to a state that the output end of the compressor is communicated with the first heat exchanger and the input end of the compressor is communicated with the third heat exchanger, and adjusting the first control valve, the second control valve and the third control valve to preset opening degrees corresponding to the common starting state of the heating water and the heating mode; And after the first control valve, the second control valve and the third control valve are adjusted to preset opening degrees corresponding to the common starting state of the heating water and the heating mode and kept for a first preset time, the first control valve, the second control valve and the third control valve are adjusted to preset opening degrees corresponding to the common running state of the heating water and the heating mode.
5. A start control method according to any one of claims 1 to 3, wherein when the start mode is a water heating mode, determining whether a start condition of the set start mode is satisfied according to the actual temperature and a target temperature preset in the set start mode, specifically includes: Determining whether a starting condition of the heating water mode is met according to the actual environment temperature and the heating water target temperature set in the heating water mode; If the starting condition of the water heating mode is met, switching the four-way reversing valve to a corresponding communication state according to the set starting mode, and adjusting the first control valve, the second control valve and the third control valve to preset opening degrees, wherein the method specifically comprises the following steps: and switching the four-way reversing valve to a state that the output end of the compressor is communicated with the first heat exchanger, the input end of the compressor is communicated with the third heat exchanger, adjusting the third control valve to the maximum opening degree, and adjusting the second control valve to the small opening degree opening state.
6. The startup control method according to claim 5, wherein if a startup condition of the heating water mode is satisfied, adjusting the first control valve, the second control valve, and the third control valve to a preset opening degree, further comprises: comparing the outdoor temperature at the third heat exchanger with an upper limit of the outdoor ambient temperature of the heating mode; If the outdoor temperature is less than or equal to the upper limit of the outdoor environment temperature of the heating mode, the first control valve is modulated to the maximum opening; And if the outdoor temperature is greater than the upper limit of the outdoor environment temperature of the heating mode, modulating the first control valve to a closed state.
7. The startup control method according to any one of claims 1 to 3, wherein when the startup mode is a heating mode or a cooling mode, determining whether a startup condition of the set startup mode is satisfied according to the actual temperature and a target temperature preset in the set startup mode specifically includes: Determining whether a starting condition of the heating mode is satisfied according to the actual ambient temperature and a heating target temperature set in the heating mode, or determining whether a starting condition of the cooling mode is satisfied according to the actual ambient temperature and a cooling target temperature set in the cooling mode; If the starting condition of the heating mode is met, switching the four-way reversing valve to a corresponding communication state according to the set starting mode, and adjusting the first control valve, the second control valve and the third control valve to preset opening degrees, wherein the four-way reversing valve is switched to a state that the output end of the compressor is communicated with the first heat exchanger, the input end of the compressor is communicated with the third heat exchanger, the first control valve and the second control valve are adjusted to maximum opening degrees, and the third control valve is adjusted to a small opening degree opening state; And/or if the starting condition of the refrigeration mode is met, switching the four-way reversing valve to a corresponding communication state according to the set starting mode, and adjusting the first control valve, the second control valve and the third control valve to preset opening degrees, wherein the method specifically comprises the steps of switching the four-way reversing valve to a state that the input end of the compressor is communicated with the first heat exchanger, the output end of the compressor is communicated with the third heat exchanger, adjusting the first control valve to the maximum opening degree, adjusting the second control valve to the throttling state and adjusting the third control valve to the small opening degree opening state.
8. A heat pump water heater, characterized in that a start control method of the heat pump water heater as claimed in any one of claims 1 to 7 is adopted.
9. A storage medium storing computer-executable instructions which, when executed by a processor, are adapted to carry out a method of controlling the start-up of a heat pump water heater as claimed in any one of claims 1 to 7.

Description

Starting control method of heat pump water heater, heat pump water heater and storage medium Technical Field The present application relates to the field of household appliances, and in particular, to a method for controlling starting of a heat pump water heater, and a storage medium. Background With the continuous development of technology and the continuous improvement of living standard of people, heat pump water heater has gradually moved into more and more families and offices. At present, the traditional heat pump water heater generally only comprises a water heating function, indoor refrigeration and heating are generally carried by refrigeration and heating equipment, the traditional heat pump water heater and the refrigeration and heating equipment are low in equipment utilization rate, and occupied installation space is large, so that the space utilization rate is low. Therefore, the novel heat pump water heater integrates the functions of heating water, refrigerating and heating, has the characteristics of multiple functions, and can improve the equipment utilization rate and the space utilization rate. However, a method of controlling the start-up of a heat pump water heater operable in a plurality of modes in a plurality of different modes has yet to be further studied. Disclosure of Invention The application provides a starting control method of a heat pump water heater, the heat pump water heater and a storage medium, which can improve the stability and reliability of the heat pump water heater when starting in a plurality of different modes. In a first aspect, an embodiment of the present application provides a method for controlling starting of a heat pump water heater, the heat pump water heater includes a refrigerant circulation loop and a hot water tank, the refrigerant circulation loop includes a compressor, a four-way reversing valve, a first heat exchanger, a second heat exchanger and a third heat exchanger, one end of the first heat exchanger is connected with one end of the compressor through the first control valve and the four-way reversing valve in sequence, the other end of the first heat exchanger is connected with one end of the third heat exchanger through the second control valve, the other end of the third heat exchanger is connected with the other end of the compressor through the four-way reversing valve, one end of the second heat exchanger is connected between an output end of the compressor and the four-way reversing valve, the other end of the second heat exchanger is connected between the second control valve and the third heat exchanger through the third control valve, the first heat exchanger is used for exchanging heat between a refrigerant in the first heat exchanger and an indoor environment, the second heat exchanger is used for exchanging heat between the refrigerant in the first heat exchanger and the hot water tank, and the third heat exchanger is used for exchanging heat between the refrigerant in the first heat exchanger and an outdoor environment. The starting control method comprises the following steps: and determining whether the starting condition of the set starting mode is met or not according to the preset target temperature and the corresponding actual temperature in the set starting mode, wherein the starting mode is one of a heating water mode, a refrigerating mode, a heating mode or a heating water and heating mode, and the actual temperature comprises at least one of the actual hot water temperature in the hot water tank and the actual environment temperature corresponding to the indoor environment. If the starting condition of the set starting mode is met, the four-way reversing valve is switched to a corresponding communication state according to the set starting mode, and the first control valve, the second control valve and the third control valve are adjusted to preset opening degrees. In the above preferred technical solution of the method for controlling start of a heat pump water heater, when the start mode is a heating mode, determining whether a start condition of the set start mode is satisfied according to a target temperature preset in the set start mode and a corresponding actual temperature, specifically includes: and determining whether the heating water starting conditions of the heating water and the heating mode are met according to the actual heating water temperature and the heating water target temperature set in the heating water and the heating mode. And determining whether heating starting conditions of the heating water and heating mode are met according to the actual environment temperature and the set heating target temperature in the heating water and heating mode. If the heating water starting condition and the heating starting condition of the heating water and the heating mode are simultaneously met, the four-way reversing valve is switched to a corresponding communication state according to the set starting mod