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Air source-water source composite heat pump system with intermediate air supply

A technology of intermediate air supply and heat pump system, which is applied to lighting and heating equipment, compressors with reversible circulation, fluid circulation arrangement, etc., can solve the problems of high exhaust temperature and low heating efficiency, so as to improve working conditions and prevent Wet compression, the effect of increasing the supercooling degree

Pending Publication Date: 2018-12-14
DALIAN NATIONALITIES UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the influence of outdoor ambient temperature, ordinary air source heat pump units cannot operate normally in an environment below minus 5°C, and face problems such as low heating efficiency and high exhaust temperature, which severely limits the use of air source heat pumps as an energy-saving technology in cold northern regions. usage of

Method used

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  • Air source-water source composite heat pump system with intermediate air supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 1 As shown, the exhaust port z of the intermediate air supplement scroll compressor 1 is connected to the port of the first four-way reversing valve 8a, the port of the first four-way reversing valve 8b is connected to the port of the second four-way reversing valve 9a, and the first The 8d port of the four-way reversing valve is connected with the m port of the heat exchanger 6 on the water source side, the 9d port of the second four-way reversing valve is connected with the e port of the air-conditioning side heat exchanger 5, and the 9b port of the second four-way reversing valve is connected with the The port p of the finned tube heat exchanger 4 is connected; the port 8c of the first four-way reversing valve and the port 9c of the second four-way reversing valve are connected in parallel to the inlet of the gas-liquid separator 2, and the outlet of the gas-liquid separator 2 is connected to the middle Supplementary air scroll compressor 1 is connecte...

Embodiment 2

[0022] Such as figure 1 As shown, in the heating mode of the air source heat pump, the first solenoid valve 12 is energized to open, the second solenoid valve 13 and the third solenoid valve 14 are not energized to close, the second four-way reversing valve 9 is energized, and the middle air supply vortex The exhaust gas from the rotary compressor 1 enters the a port of the first four-way reversing valve 8, discharges from the b port, enters the a port of the second four-way reversing valve 9, and then discharges from the d port, and enters the air conditioner side heat exchanger 5 , after exchanging heat with the circulating water system, it enters the liquid reservoir 3 through the fifth one-way valve 19, comes out of the liquid reservoir 3, passes through the dry filter 21 and enters the port h of the economizer 7, and flows out from the port j after heat exchange. It is divided into two paths, one path enters the port k of the economizer 7 through the air supply electronic...

Embodiment 3

[0025] Such as figure 1As shown, in the heating mode of the water source heat pump, the first solenoid valve 12 and the second solenoid valve 13 are not powered and closed, the third solenoid valve 14 is opened, the second four-way reversing valve 9 is powered, and the middle supplementary air scroll compresses Exhaust from machine 1 enters port a of the first four-way reversing valve 8, is discharged from port b, enters port a of the second four-way reversing valve 9, and then is discharged from port d to enter the heat exchanger 5 on the air-conditioning side. After heat exchange in the water system, it enters the liquid reservoir 3 through the fifth one-way valve 19, comes out of the liquid reservoir 3 and enters the port h of the economizer 7 through the dry filter 21, and flows out from the port j after heat exchange, and is divided into two One way passes through the gas supply electronic expansion valve 10 and enters the port k of the economizer 7, and after heat exchan...

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Abstract

The invention provides an air source-water source composite heat pump system with intermediate air supply. The air source-water source composite heat pump system comprises an intermediate air supply vortex compressor, an economizer, a gas-liquid separator, an air conditioner side heat exchanger, a water source side heat exchanger, a finned pipe heat exchanger, a drying filter and the like. An airsource manner and a water source manner can be independently used in the system for conducting heating and refrigerating, the highest-efficiency running mode is automatically selected according to theconditions of the air temperature and the water source temperature, and when the air source is independently used for heating running, the lowest environment temperature can reach -20 DEG C, and theusage limitation of an air source heat pump in the north cold area can be effectively avoided.

Description

technical field [0001] The invention relates to a heat pump system, in particular to an air source-water source composite heat pump system with intermediate air supply. Background technique [0002] Heating is common in the cold regions of northern my country in winter, and most of them use coal-fired centralized heating. At the same time, there are a small number of scattered regional boiler rooms, electric heaters for personal use, and small coal-fired, oil-fired, and gas-fired boilers for winter heating, which wastes energy. What has brought about is the continuous aggravation of environmental pollution. [0003] As an energy-saving and environment-friendly technology, the air source heat pump has good safety, and is easy to install and use, and has been widely used in the world. Due to the influence of outdoor ambient temperature, ordinary air source heat pump units cannot operate normally in an environment below minus 5°C, and face problems such as low heating efficienc...

Claims

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Application Information

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IPC IPC(8): F25B13/00F25B41/04F25B41/20
CPCF25B13/00F25B2313/02742F25B2400/13F25B41/20
Inventor 蒋爽杜伟毕海洋
Owner DALIAN NATIONALITIES UNIVERSITY