Multistage air source heat pump for producing high temperature hot water

An air-source heat pump, high-temperature hot water technology, used in fluid heaters, lighting and heating equipment, compressors with cascaded work, etc. problem, to achieve the effect of easy control, compact design and high adaptability

Active Publication Date: 2017-03-29
CLIMAVENETA CHATUNION REFRIGERATION EQUIP SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The temperature difference between the ambient air temperature and the maximum hot water temperature produced in the existing technology needs to be within a certain limit, the thermal characteristics of the refrigerant are not perfect, and the operating range is not large, the adaptability to changes in boundary conditions is poor, and the structure is extremely Complicated, inefficient defrosting cycle and other disadvantages, the purpose of the present invention is to provide a multi-stage air source heat pump for producing high temperature hot water

Method used

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  • Multistage air source heat pump for producing high temperature hot water
  • Multistage air source heat pump for producing high temperature hot water
  • Multistage air source heat pump for producing high temperature hot water

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Embodiment Construction

[0022] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] The invention discloses a multi-stage air source heat pump for producing high-temperature hot water, which includes a first refrigerant circuit 1 and a second refrigerant circuit 2. The structure and connection relationship of the above-mentioned components will be described in detail below.

[0024] Such as figure 1 , the first refrigerant circuit 1 includes a first compressor 7 , a four-way valve 8 , a first expansion valve 9 , a second expansion valve 10 , a third expansion valve 11 , and a first one-way valve 13 . The first refrigerant circuit 1 is connected to the heat exchanger 5 for the user 6 through water circulation, and the user 6 is connected to the heat exchanger 5 from the right side, and one end of the heat exchanger 5 is connected to the first compressor through a four-way valve 8 7. The four-way valve...

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Abstract

The invention discloses a multistage air source heat pump for producing high temperature hot water. The heat pump comprises a first refrigerant loop and a second refrigerant loop. The first refrigerant loop is connected with a heat exchanger, the first refrigerant loop and the second refrigerant loop are connected through a middle heat exchanger and a fin type heat exchanger, and the first refrigeration loop and the second refrigeration loop in the fin type heat exchanger are interwoven in the fins of the heat exchanger. The multistage air source heat pump optimizes the performance coefficient. The optimized performance coefficient can be maintained in a working section wide in range, so that the heat pump has high adaptability on the boundary change condition. Finally, the multistage air source heat pump is compact and simple in design, easy to control and capable of efficiently executing the necessary defrosting cycle.

Description

technical field [0001] The present invention relates to an air source heat pump, more specifically, to a multistage air source heat pump for producing high-temperature hot water. Background technique [0002] The air source heat pump unit is a cooling and heating machine that absorbs heat from the surrounding low-temperature environment through a reverse compression cycle (reverse Carnot cycle) to provide users with high-temperature hot water. The purpose of the air source heat pump is to produce a certain amount of hot water at a certain temperature or to provide a certain amount of heating QT at a temperature set by the user. Heat pump coefficient of performance (COP) is defined as the ratio of effective heat (heat supplied to the user) to total power consumption (absorbed power PA). [0003] Now there are various types of air source hot water heat pumps for producing high temperature hot water. The disadvantage of the traditional single-stage air source hot water heat p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B7/00F24H4/02F25B47/02
Inventor 金云林
Owner CLIMAVENETA CHATUNION REFRIGERATION EQUIP SHANGHAI
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