Unlock instant, AI-driven research and patent intelligence for your innovation.

A heat pump hot water unit and its method for controlling abnormal water flow

A control method, heat pump hot water technology, applied in refrigerators, compressors, refrigeration and liquefaction, etc., can solve problems such as cracking of heat exchangers

Active Publication Date: 2021-05-07
GREE ELECTRIC APPLIANCES INC
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem that during the defrosting process, the second heat exchanger (water side heat exchanger) produces low-temperature water, and when the water flow is abnormal, when the water temperature is lower than 0°C, it is very easy to cause the heat exchanger to freeze and crack

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A heat pump hot water unit and its method for controlling abnormal water flow
  • A heat pump hot water unit and its method for controlling abnormal water flow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus their repeated descriptions will be omitted.

[0024] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or mo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

In the heat pump hot water unit and its method for controlling abnormal water flow of the present invention, when the unit is in defrosting operation, the temperature of the water entering and leaving the second heat exchanger is detected, and according to the above temperature difference, it is judged whether the water flow is abnormal, and the operation of the unit is controlled. . According to the range of the temperature difference between the two, the operation of the unit is controlled, and combined with the ambient temperature, judgment is made to control the operation of the unit. Through the above control method, the present invention can effectively judge whether the water flow of the hot water unit is abnormal and whether there is a risk of freezing, so as to prevent the unit from freezing and ensure its safe operation.

Description

technical field [0001] The invention belongs to the field of heating, and in particular relates to a heat pump water heater unit and a method for controlling abnormal water flow thereof. Background technique [0002] The heat pump hot water unit absorbs the low-temperature heat source in the air. Whether it is cold winter, night, or rainy, snowy and other bad weather, it can provide hot water for daily life 24 hours a year, and can be connected to heating in winter The heating operation can be carried out with radiators or floor heating to meet the requirements of all-weather operation. [0003] During the defrosting process of the heat pump unit, the four-way valve can be used to switch the flow direction of the refrigerant (refrigerant) to achieve defrosting, but at this time, the water-side heat exchanger has a short-term cooling water process. When the user's water pump fails or the water flow in the water system pipeline fluctuates during the defrosting process of the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F25B13/00
CPCF25B13/00F25B2313/0314
Inventor 罗建飞曾奕郭庆唐于淞郭旭
Owner GREE ELECTRIC APPLIANCES INC