Antifreeze method of casing heat exchanger

A technology of heat exchanger and casing type, which is applied in the field of antifreeze of casing type heat exchangers, which can solve the problems of casing and refrigerant pipes that are easy to freeze and crack, and achieve good ductility and avoid freezing cracks

Active Publication Date: 2017-12-19
GUANGDONG BILAI ENERGY SAVING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During use, since the casing heat exchanger is installed outdoors, when the outdoor temperature is lower than 0°C, the water in the casing may freeze, causing the casing and refrigerant pipes to freeze and crack easily.

Method used

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  • Antifreeze method of casing heat exchanger
  • Antifreeze method of casing heat exchanger
  • Antifreeze method of casing heat exchanger

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Experimental program
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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] see Figure 1 to Figure 3 As shown, a casing heat exchanger 100 antifreeze structure includes a refrigerant pipe 3, a casing 1, a water storage tank 21 and a control circuit 19. The refrigerant pipe 3 is arranged in the casing 1, and the outer wall of the refrigerant pipe 3 is connected to the casing 1 The water heating chamber 2 is jointly surrounded by the inner walls, and one end of the water heating chamber 2 communicates with the water storage tank 21; it is characterized in that: it also includes a circulating water pump 7 electrically connected to the control circuit 19, an outdoor temperature sensor 20 and a water level switch 22; The circulating water pump 7 is provided with a water inlet 8 and a water outlet 15, and the water inlet 8 is respectively connected with the water inlet pipe 11 and the water storage tank 21 through the electri...

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PUM

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Abstract

The invention relates to an antifreeze structure and an antifreeze method for a casing heat exchanger. The structure includes a refrigerant pipe, a casing, a water storage tank and a control circuit. A water heating chamber is formed, and one end of the water heating chamber communicates with the water storage tank; it is characterized in that it also includes a circulating water pump, an outdoor temperature sensor and a water level switch electrically connected to the control circuit; the circulating water pump is provided with a water inlet and a water outlet, The water inlet is respectively connected to the water inlet pipe and the water storage tank through the electric three-way regulating valve, and the water outlet is connected to the other end of the water heating chamber; the water level switch is located in the water storage tank, and the water storage capacity in the water storage tank corresponds to the height of the water level switch. Greater than or equal to the water storage capacity of the water heating chamber. The anti-freezing structure of this type of casing heat exchanger can drive the water in the water heating chamber to flow through the circulating water pump, thereby slowing down its freezing speed to a certain degree.

Description

technical field [0001] The invention relates to the technical field of heat pump water heaters, in particular to an antifreezing method for a casing heat exchanger of a heat pump water heater. Background technique [0002] The casing heat exchanger of the existing heat pump water heater is composed of a refrigerant pipe and a casing. The refrigerant pipe is arranged in the casing. It is made into a coil shape, and the surface of the coil-shaped casing is provided with an insulating layer. During use, since the casing heat exchanger is installed outdoors, when the outdoor temperature is lower than 0°C, the water in the casing may freeze, causing the casing and refrigerant pipes to freeze and crack easily. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a casing type heat exchanger antifreeze method with simple and reasonable structure, good antifreeze effect and improved c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H9/20F24H4/02
Inventor 巫宗进
Owner GUANGDONG BILAI ENERGY SAVING EQUIP
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