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Compound heat pump unit and central heating system

A heat pump unit and a composite technology, applied in hot water central heating systems, heating systems, household heating, etc., can solve problems such as increased head and insufficient head of primary water inlet, and achieve primary water pressure drop reduction, Reduce the primary water pressure drop and increase the flow velocity in the pipe

Active Publication Date: 2018-05-08
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to increase the return temperature of the primary water, the composite heat exchange unit proposed in the Chinese patent application No. 201310681969.5 causes the lift of the primary water to further increase, because the lift of the primary water inlet is provided by the central heating network ( Generally within 10m), there is often a situation where the primary water inlet lift is insufficient, and it is necessary to add another water pump on the primary side to increase the primary water lift

Method used

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  • Compound heat pump unit and central heating system
  • Compound heat pump unit and central heating system
  • Compound heat pump unit and central heating system

Examples

Experimental program
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Effect test

no. 1 example

[0050] figure 1 It is a schematic diagram of the principle of the composite heat pump unit according to the first embodiment of the present invention.

[0051] Such as figure 1 As shown, the composite heat pump unit of the first embodiment includes an absorption heat pump 10 , a compression refrigerator 20 , a heat exchanger 30 , a primary side pipeline 40 and a secondary side pipeline 50 .

[0052] The absorption heat pump 10 includes a generator 11 , an absorption heat pump condenser 12 , an absorber 13 and an absorption heat pump evaporator 14 .

[0053] The compression refrigerator 20 includes a compression refrigerator evaporator 21 and a compression refrigerator condenser 22 .

[0054] The primary side pipeline 40 is connected in series with the generator 11, heat exchanger 30 and compression refrigerator evaporator 21 along the water flow direction, and the primary side pipeline 40 is only connected with the generator 11 and the absorption heat pump evaporator 14. De...

no. 2 example

[0065] figure 2 It is a schematic diagram of the principle of the composite heat pump unit according to the second embodiment of the present invention.

[0066] Such as figure 2 As shown, the difference between the second embodiment and the first embodiment is that the second end of the first branch pipe 51 located at the secondary water outlet end of the condenser 22 of the compression refrigerating machine and the second end of the first branch pipe 51 located at the secondary water outlet end of the heat exchanger 30 The second ends of the second branch pipes 52 respectively output secondary water outlets. Therefore, the secondary water outlet at the second end of the second branch pipe 52 and the secondary water outlet at the second end of the first branch pipe 51 are respectively used to provide heat for the user.

[0067] The flow process of primary water and secondary water in the second embodiment will be described below.

[0068] The primary water first enters th...

no. 3 example

[0073] image 3 It is a schematic diagram of the principle of the composite heat pump unit according to the third embodiment of the present invention.

[0074] Such as image 3 As shown, the composite heat pump unit of the third embodiment includes an absorption heat pump 10 , a compression refrigerator 20 , a heat exchanger 30 , a primary side pipeline 40 and a secondary side pipeline 50 .

[0075] The absorption heat pump 10 includes a generator 11 , an absorption heat pump condenser 12 , an absorber 13 and an absorption heat pump evaporator 14 .

[0076] The compression refrigerator 20 includes a compression refrigerator evaporator 21 and a compression refrigerator condenser 22 .

[0077] The primary side pipeline 40 is connected in series with the generator 11, heat exchanger 30 and compression refrigerator evaporator 21 along the water flow direction, and the primary side pipeline 40 is only connected with the generator 11 and the absorption heat pump evaporator 14. De...

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Abstract

The invention discloses a composite heat pump unit and a centralized heating system. The compound heat pump unit includes absorption heat pump, compression refrigerator, heat exchanger, primary side pipeline and secondary side pipeline, and absorption heat pump includes generator, absorption heat pump condenser, absorber and absorption heat pump evaporator , the compression refrigerator includes a compression refrigerator evaporator and a compression refrigerator condenser, and the primary side pipeline is connected in series with the generator, heat exchanger and compression refrigerator evaporator along the water flow direction, and the primary side pipeline Only connected to generators and generators in absorption heat pump evaporators. The composite heat pump unit of the invention can reduce the primary water pressure drop and at the same time ensure a relatively low return temperature of the primary water.

Description

technical field [0001] The invention relates to the field of heating equipment, in particular to a composite heat pump unit and a centralized heating system. Background technique [0002] The central heating system is widely used in heating in cities and towns in northern my country. Taking the central heating system that uses the heat of the combined heat and power system for heating as an example, reducing the primary water return temperature of the central heating system is conducive to recovering the condensation heat at the condenser as the heat source in the combined heat and power system. The return water is heated to increase the temperature, which can improve the efficiency of the combined heat and power system. [0003] The Chinese patent with the patent number ZL200810101065.X and the title of the invention "a central heating system with a large temperature difference" proposes a central heating system with a large temperature difference. Absorption heat pump uni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24D3/18F25B25/02
Inventor 王娟王升陆超刘华张治平
Owner GREE ELECTRIC APPLIANCES INC
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