Unlock instant, AI-driven research and patent intelligence for your innovation.

Frost-free air source heat pump system device and method for membrane distillation regeneration

An air source heat pump and system device technology, applied in heat recovery systems, heating methods, space heating and ventilation details, etc., can solve problems such as increased system complexity, energy waste, and difficult implementation

Active Publication Date: 2020-12-11
ZHEJIANG SCI-TECH UNIV
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Packed towers are widely used in antifreeze regeneration equipment, but the disadvantage of packed tower regeneration is that during the regeneration process, the air and hot antifreeze are in direct contact. When the water in the antifreeze evaporates and transfers to the air, a considerable part of the heat will also be used Heats the ambient air, resulting in a significant waste of energy
The patent application with the application number CN201410208575.2, in order to achieve heat recovery, uses a closed air circulation during regeneration, which can effectively prevent unnecessary heating of the outdoor air, and at the same time utilizes an outdoor heat exchanger with a surface temperature higher than 0 degrees to recycle air significantly. Heat and latent heat. Although this method has a certain heat recovery effect, the system is complex and difficult to realize. During regeneration, the heat pump system’s heat absorption from the outdoor low-temperature environment will be interrupted, and the regeneration energy efficiency is not high. In order to improve this point, you can The heat storage device is used to supplement heat to the evaporator of the heat pump system, but this measure will further increase the complexity of the system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Frost-free air source heat pump system device and method for membrane distillation regeneration
  • Frost-free air source heat pump system device and method for membrane distillation regeneration
  • Frost-free air source heat pump system device and method for membrane distillation regeneration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Embodiment 1, Frost-free air source heat pump system device type 1 for membrane distillation regeneration, such as figure 1 Shown, including heat pump system and regenerative system.

[0073] The heat pump system includes a four-way reversing valve 1 , a compressor 2 , an indoor heat exchanger 4 , an economizer 5 , an outdoor spray heat exchanger 6 , a main flow valve 10 and an auxiliary throttle valve 9 . The regeneration system includes a solution heater 3 , a regenerator 7 , a vacuum pump 8 , a regulating valve 11 , a solution circulation pump 12 , a filter 13 and a condensate pump 14 .

[0074] The four-way reversing valve 1 is provided with a first port 101 , a second port 102 , a third port 103 and a fourth port 104 .

[0075] The compressor 2 is provided with a compressor inlet 201 , a compressor air supply port 202 and a compressor outlet 203 .

[0076]The top of the outdoor spray heat exchanger 6 is provided with a first refrigerant inlet and outlet 601, and ...

Embodiment 2

[0116] Embodiment 2, Frost-free air source heat pump system device type 2 for membrane distillation regeneration, such as figure 2 shown;

[0117] In Embodiment 1, "the first port 101 of the four-way reversing valve is divided into two paths after sequentially passing through the refrigerant passage of the solution heater 3 and the refrigerant passage of the indoor heat exchanger 4" to "the four-way reversing valve The first port 101 sequentially passes through the refrigerant passage of the indoor heat exchanger 4 and the refrigerant passage of the solution heater 3 and then divides into two paths", and the rest is the same as in Embodiment 1.

[0118] Frost-free air source heat pump system device type 2 with membrane distillation regeneration is divided into summer operation mode and winter operation mode in actual use.

[0119] In the summer operation mode, the refrigerant passes through the main heat exchange channel of the economizer 5, then flows through the refrigeran...

Embodiment 3

[0121] Embodiment 3, device type three of the frost-free air source heat pump system regenerated by membrane distillation, such as image 3 shown;

[0122] Cancel the economizer 5, the auxiliary throttle valve 9 and the air supply port 202 of the compressor in Embodiment 1;

[0123] The first port 101 of the "four-way reversing valve" in Example 1 is divided into two paths through the refrigerant channel of the solution heater 3 and the refrigerant channel of the indoor heat exchanger 4 in sequence, and one path is connected through the auxiliary throttle valve 9 The auxiliary heat exchange channel of the economizer 5 is connected to the air supply port 202 of the compressor, and the other route passes through the main heat exchange channel of the economizer 5, passes through the main throttle valve 10, and then enters the refrigerant of the outdoor spray heat exchanger 6 for the first time. Outlet 601 connection" is changed to "four-way reversing valve. The first port 101 pa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a frost-free air source heat pump system device for membrane distillation regeneration: it includes a heat pump system and a regeneration system, and the heat pump system includes a four-way reversing valve, a compressor, an indoor heat exchanger, an outdoor spray heat exchanger and a main flow The regeneration system includes a solution heater, a regenerator, a vacuum pump, a regulating valve, a solution circulation pump, a filter, and a condensate pump; the present invention also provides a method for using a frost-free air source heat pump regenerated by membrane distillation, including the following steps: The high-temperature and high-pressure gaseous refrigerant flowing out of the compressor outlet passes through the second port of the four-way reversing valve and then flows out from the third port of the four-way reversing valve. The low-temperature and low-pressure refrigerant gas flowing into the compressor inlet is compressed into high-temperature and high-pressure The gas then flows out from the compressor outlet. The present invention does not have a frosting process during heating operation in winter, and the system does not need complex switching in the regeneration mode, and does not affect normal heating.

Description

technical field [0001] The invention relates to the technical field of air conditioning and refrigeration, in particular to a frost-free air source heat pump system device and method for membrane distillation regeneration. Background technique [0002] The air source heat pump system is widely used in the field of building air conditioning. It has dual-purpose functions in winter and summer. It is convenient and simple to install, does not occupy the area of ​​the underground computer room, and has a high market share and recognition. The main problem of the current air source heat pump system is that the outdoor heat exchanger is prone to frost in winter, which causes the system to interrupt the normal operation and perform frequent defrosting operations, which not only affects the normal heating, but also reduces the life of the unit. [0003] Currently, proposed new solutions to the frosting problem include group defrosting technology and anti-frost technology. The forme...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F25B13/00F25B41/00F24F13/22F25B41/40
CPCF24F13/222F25B13/00F25B41/00Y02B30/52
Inventor 王厉
Owner ZHEJIANG SCI-TECH UNIV