High-energy-efficiency air source heat pump during partial load operation

An air source heat pump, part load technology, used in heat pumps, lighting and heating equipment, compressors with reversible cycles, etc., can solve problems such as low energy efficiency and idle fin heat exchangers

Inactive Publication Date: 2021-09-03
河北中实新能源设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-energy-efficiency air-source heat pump during part-load operation, to solve the problem of low energy efficiency caused by part of the fin heat exchangers being idle when the air-source heat pump is under part-load operation

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  • High-energy-efficiency air source heat pump during partial load operation
  • High-energy-efficiency air source heat pump during partial load operation

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Embodiment Construction

[0019] Such as Figure 1-2 As shown, a high-energy-efficiency air source heat pump in part-load operation includes two subsystems arranged symmetrically, and the two subsystems share a shell-and-tube heat exchanger 3, and each of the subsystems is connected to two Fin heat exchanger 9, the inlet front ends of the two fin heat exchangers 9 are connected in parallel through the first Y-type three-way valve 14 and the second Y-type three-way valve 15, and the two fin heat exchangers 9 The rear end of the outlet is connected in parallel through the third Y-type three-way valve 16 and the fourth Y-type three-way valve 17. The subsystem includes a compressor 1, a four-way valve 2, a balance tank 4, a two-way dry filter 5, an economizer 6 and gas-liquid separator 11, the compressor 1, the four-way valve 2, the shell-and-tube heat exchanger 3, the balance tank 4, the two-way dry filter 5 and the economizer 6 are connected in sequence , the pipeline between the economizer 6 and the fi...

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Abstract

The invention discloses a high-energy-efficiency air source heat pump during partial load operation. The high-energy-efficiency air source heat pump comprises two subsystems which are symmetrically arranged, wherein the two subsystems share one shell-and-tube heat exchanger, and each subsystem is connected with two finned heat exchangers; the front ends of inlets of the two finned heat exchangers are connected in parallel through a first Y-type three-way valve and a second Y-type three-way valve, and the rear ends of outlets of the two finned heat exchangers are connected in parallel through a third Y-type three-way valve and a fourth Y-type three-way valve; each subsystem comprises a compressor, a four-way valve, a balance tank, a bidirectional drying filter, an economizer and a gas-liquid separator; and a main electronic expansion valve is arranged on a pipeline between each economizer and the first Y-type three-way valve. During partial load operation, the two finned heat exchangers both work, so that the capacity and energy efficiency are higher; and meanwhile, before the Y-type three-way valves, a refrigerant is in a low-pressure state after being throttled by the main electronic expansion valve and cannot migrate at the Y-type three-way valves, so that stability of the refrigerant flow and the lubricating oil circulation amount is guaranteed.

Description

technical field [0001] The invention relates to the technical field of air source heat pumps, in particular to an air source heat pump with high energy efficiency during partial load operation. Background technique [0002] At present, more and more central heating projects start to use air source heat pump as heat source for heating. The roof or the ground can be placed arbitrarily, without occupying the effective use area of ​​the building, and the construction and installation are very simple. There are many types of air source heat pumps. For dual-system air source heat pumps, the current mainstream is divided into air source heat pumps that are independent of each other between the two systems. Parallel connection with compressor, parallel connection of fin heat exchanger and parallel connection of shell-and-tube heat exchanger are dual-system parallel air source heat pumps. [0003] The two systems of the air source heat pump system are independent of each other. Duri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B30/06F25B39/00F25B13/00F25B41/40F25B41/34F25B41/20F25B43/00
CPCF25B30/06F25B39/00F25B13/00F25B43/003
Inventor 王鹏沈玉麒刘建忠
Owner 河北中实新能源设备制造有限公司
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