CN-116951784-B - Water pump control method and device, electronic equipment and storage medium

CN116951784BCN 116951784 BCN116951784 BCN 116951784BCN-116951784-B

Abstract

The application relates to a water pump control method, a device, electronic equipment and a storage medium, wherein the method comprises the steps of obtaining target parameters in a water system and a heat pump system, wherein the target parameters are parameters related to water flow in a pipeline of the water system in the water system and the heat pump system; detecting water flow in a water system pipeline according to the target parameters, and controlling the working state of the water pump according to the detection result. The water flow in the water system pipeline can be detected by utilizing the target parameters in the water system and the heat pump system, and then the working state of the water pump is controlled according to the detection result, so that misjudgment caused by detecting the water flow on the water system pipeline by adopting the water flow switch in the prior art is avoided, the detection accuracy is improved, and the problem of dry grinding of the water pump is effectively solved.

Inventors

LI LONGFEI
WU LIANFA
SONG SHULI
FU YINGSHENG
NI YI
YANG LIN

Assignees

珠海格力电器股份有限公司

Dates

Publication Date: 20260508
Application Date: 20230727

Claims (8)

1. The utility model provides a water pump control method which characterized in that is applied to heat pump multi-split water system, heat pump multi-split water system includes water system and heat pump system, water system includes water system pipeline and water pump at least, the method includes: Acquiring target parameters in the water system and the heat pump system, wherein the target parameters are parameters related to water flow in a water system pipeline in the water system and the heat pump system; detecting water flow in the water system pipeline according to the target parameter; controlling the working state of the water pump according to the detection result; the target parameters comprise the temperature change rate of the fluorine side pipeline and the high pressure value detected by the high pressure sensor; the detecting the water flow in the water system pipeline according to the target parameter comprises the following steps: Comparing the temperature change rate of the fluorine side pipeline with a first preset threshold value, and comparing the high pressure value with a second preset threshold value; Determining that no water flow exists in the water system pipeline when the temperature change rate of the fluorine side pipeline is greater than the first preset threshold value and the high pressure value is greater than the second preset threshold value, wherein the temperature change rate of the fluorine side pipeline comprises a fluorine side pipeline temperature change rate and a fluorine side pipeline temperature change rate, and the temperature change rate of the fluorine side pipeline is greater than the first preset threshold value means that the fluorine side pipeline temperature change rate and the fluorine side pipeline temperature change rate are both greater than the first preset threshold value; and determining that water flow exists in the water system pipeline under the condition that the temperature change rate of the fluorine side pipeline is smaller than or equal to the first preset threshold value and/or the high pressure value is smaller than or equal to the second preset threshold value, wherein the fact that the temperature change rate of the fluorine side pipeline is smaller than or equal to the first preset threshold value means that both the temperature change rate of the fluorine side pipeline and the temperature change rate of the fluorine side outlet pipe are smaller than or equal to the first preset threshold value.
2. The method of claim 1, wherein comparing the rate of temperature change of the fluorine side conduit to a first preset threshold comprises: comparing the temperature change rate of the fluorine side inlet pipe and the temperature change rate of the fluorine side outlet pipe with the first preset threshold value respectively; Determining that the temperature change rate of the fluorine side pipeline is greater than the first preset threshold value under the condition that the temperature change rate of the fluorine side inlet pipe and the temperature change rate of the fluorine side outlet pipe are both greater than the first preset threshold value; And under the condition that the temperature change rate of the fluorine side inlet pipe and the temperature change rate of the fluorine side outlet pipe are smaller than or equal to the first preset threshold value, determining that the temperature change rate of the fluorine side pipeline is smaller than or equal to the first preset threshold value.
3. The method of claim 1, wherein prior to said comparing the rate of temperature change of the fluorine side conduit with a first preset threshold and comparing the high pressure value with a second preset threshold, the method further comprises: acquiring a corresponding running state of the heat pump system when the water demand of the water system is detected; And determining the first preset threshold value and the second preset threshold value according to the corresponding running states of the heat pump system, wherein the first preset threshold value and the second preset threshold value corresponding to the heat pump system in different running states are different.
4. The method of claim 1, wherein the controlling the operation state of the water pump according to the detection result comprises: controlling the water pump to be in an operating state under the condition that water flow exists in the water system pipeline; and controlling the water pump to be in a stop state under the condition that no water flow exists in the water system pipeline.
5. The method of claim 1, the method further comprising: and outputting a fault alarm under the condition that no water flow exists in the water system pipeline.
6. The utility model provides a water pump controlling means, its characterized in that is applied to many online water systems of heat pump, many online water systems of heat pump include water system and heat pump system, water system includes water system pipeline and water pump at least, the device includes: The acquisition module is used for acquiring target parameters in the water system and the heat pump system, wherein the target parameters are parameters related to water flow in a water system pipeline in the water system and the heat pump system; the detection module is used for detecting water flow in the water system pipeline according to the target parameter; the control module is used for controlling the working state of the water pump according to the detection result; the target parameters comprise the temperature change rate of the fluorine side pipeline and the high pressure value detected by the high pressure sensor, and the control module comprises: the comparison submodule is used for comparing the temperature change rate of the fluorine side pipeline with a first preset threshold value and comparing the high-pressure value with a second preset threshold value; A first determining submodule, configured to determine that no water flow exists in the water system pipeline when the temperature change rate of the fluorine side pipeline is greater than the first preset threshold and the high pressure value is greater than the second preset threshold, where the temperature change rate of the fluorine side pipeline includes a fluorine side pipeline temperature change rate and a fluorine side outlet pipe temperature change rate, and the temperature change rate of the fluorine side pipeline is greater than the first preset threshold is that both the fluorine side pipeline temperature change rate and the fluorine side outlet pipe temperature change rate are greater than the first preset threshold; And the second determining submodule is used for determining that water flow exists in the water system pipeline under the condition that the temperature change rate of the fluorine side pipeline is smaller than or equal to the first preset threshold value and/or the high pressure value is smaller than or equal to the second preset threshold value, wherein the fact that the temperature change rate of the fluorine side pipeline is smaller than or equal to the first preset threshold value means that the temperature change rate of the fluorine side pipeline and the temperature change rate of the fluorine side outlet pipe are smaller than or equal to the first preset threshold value.
7. The electronic equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus; A memory for storing a computer program; a processor for implementing the steps of the water pump control method according to any one of claims 1 to 5 when executing a program stored in a memory.
8. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the water pump control method according to any one of claims 1-5.

Description

Water pump control method and device, electronic equipment and storage medium Technical Field The application relates to the technical field of multi-split water systems of heat pumps, in particular to a water pump control method, a device, electronic equipment and a storage medium. Background The heat pump multi-split water system has the advantages of energy conservation, high efficiency, high comfort, environmental protection and the like, so that the heat pump multi-split water system is more and more popular in daily life of people. However, if the water system of the heat pump multi-split air conditioner is in the running process, the problem of dry grinding of the water pump exists when no water flows exist in the water system pipeline. In the prior art, a water pump is controlled in a manner that a water flow switch connected in series on a water system pipeline is used for detecting whether water flow exists on the water system pipeline, and then the water pump is started and stopped according to a detection result. However, when the water flow switch is used for detecting the water flow on the water system pipeline, the water flow switch can be operated only when the water flow is large enough, so that the water flow switch is easy to be misjudged as no water when the water flow is small, and the water flow switch can not be operated and is misjudged as no water when the air exists in the water system pipeline. Therefore, the existing water pump control method is easy to cause the problem of dry grinding of the water pump due to misjudgment of water flow on a water system pipeline. Disclosure of Invention The application provides a water pump control method, a device, electronic equipment and a storage medium, which are used for solving the problem that the existing water pump control mode is easy to cause dry grinding of a water pump due to misjudgment of water flow on a water system pipeline. In a first aspect, the present application provides a water pump control method applied to a multi-split heat pump water system, where the multi-split heat pump water system includes a water system and a heat pump system, and the water system includes at least a water system pipeline and a water pump, and the method includes: Acquiring target parameters in the water system and the heat pump system, wherein the target parameters are parameters related to water flow in a water system pipeline in the water system and the heat pump system; detecting water flow in the water system pipeline according to the target parameter; and controlling the working state of the water pump according to the detection result. Optionally, the heat pump system comprises at least a fluorine side pipeline, a high pressure sensor and a condenser pipeline; the acquiring target parameters in the water system and the heat pump system comprises: Acquiring operation parameters of the water system and the heat pump system in a preset duration under the condition that the water demand of the water system is detected and the heat pump system is started to operate; And acquiring the target parameter from the operation parameter, wherein the target parameter comprises at least one of the temperature change rate of the fluorine side pipeline, the high pressure value detected by the high pressure sensor, the temperature change rate of the water system pipeline and the temperature value of the condenser pipeline in the preset time period. Optionally, the target parameters include a rate of temperature change of the fluorine-side conduit and the high pressure value; the detecting the water flow in the water system pipeline according to the target parameter comprises the following steps: Comparing the temperature change rate of the fluorine side pipeline with a first preset threshold value, and comparing the high pressure value with a second preset threshold value; Determining that no water flow exists in the water system pipeline under the condition that the temperature change rate of the fluorine side pipeline is larger than the first preset threshold value and the high pressure value is larger than the second preset threshold value; And determining that water flow exists in the water system pipeline under the condition that the temperature change rate of the fluorine side pipeline is smaller than or equal to the first preset threshold value or the high pressure value is smaller than or equal to the second preset threshold value. Optionally, the temperature change rate of the fluorine side pipeline comprises a fluorine side pipeline temperature change rate and a fluorine side pipeline temperature change rate; the comparing the temperature change rate of the fluorine side pipeline with a first preset threshold value comprises the following steps: comparing the temperature change rate of the fluorine side inlet pipe and the temperature change rate of the fluorine side outlet pipe with the first preset threshold value respectively; Determining that