Air conditioner

A technology of air conditioner and pressure reducer, which is applied in the direction of high-efficiency regulation technology, compression machine with reversible cycle, damage protection, etc. It can solve the problems of increased pressure loss, enlarged heater structure, and increased refrigerant circulation volume, etc. Achieve the effects of small pressure fluctuations, reduced volume, and improved operational reliability

Inactive Publication Date: 2006-04-12
PANASONIC CORP
View PDF1 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In addition, at the above-mentioned refrigerant confluence, the amount of refrigerant circulation will increase, and the pressure loss will also incr

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
  • Air conditioner
  • Air conditioner
  • Air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] figure 1 It is a structural diagram of the air conditioner in the present invention. exist figure 1 Among them, the outdoor unit 20 is equipped with: a compressor 1, a four-way valve 2, a pressure reducer 4, an outdoor heat exchanger 5, a first bypass circuit 6, a two-way valve for refrigerant heating 7, and a refrigerant heater 8. The second bypass circuit 9, the two-way valve 10 for defrosting, the two-way valve 11 of the second bypass circuit, the two-way valve 12 of the first bypass circuit, the refrigerant heating device 13, and the refrigerant passing pipe 14 , heat storage unit 15, check valve 16 and outdoor fan 19. The indoor unit 18 is provided with an indoor heat exchanger 3 and an indoor fan 17 . The pressure reducer 4 here may be an electromagnetic expansion valve.

[0042] Figure 4 Shown in the control system block diagram of embodiment 1 of the present invention, Figure 5 The working sequence diagram for the operation of the control system. Fig...

Embodiment 2

[0053] Next, pass figure 2 Embodiment 2 of the present invention will be described.

[0054] The difference between the present embodiment and the first embodiment is that the decompressor 4 is constituted by using a two-way valve 4 a that does not have a depressurization function but only performs opening and closing operations of the refrigerant. In such a case, defrosting may be performed while continuing heating.

[0055] The operation of the two-way valve 4a is as follows. At the same time as the two-way valve 7 for refrigerant heating is controlled to be opened or a little later, the two-way valve 4a is controlled to be closed.

Embodiment 3

[0057] pass below image 3 Embodiment 3 will be described.

[0058] The difference between this embodiment and Embodiment 1 is that there is no pressure reducer between the two-way valve 7 for heating the refrigerant and the heater 8, but a pressure reducer between the indoor heat exchanger 3 and the pressure reducer 4 Reducer 12.

[0059] With such an arrangement, the first bypass circuit 6 can be simplified, thereby reducing the volume of the body and reducing the manufacturing cost.

[0060] In addition, a gas-liquid separator 21 is provided on the suction side of the compressor 1 .

[0061] Due to the different specifications of the compressors 1 , some compressors 1 have a weaker tolerance to liquid return. In such a case, it is necessary to provide such a gas-liquid separator 21 .

[0062] In particular, liquid return is more during defrosting operation, so the impact of liquid return on compressor reliability needs to be considered.

[0063] In addition, by constit...

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

To provide an air conditioner performing a defrosting operation while continuing a heating operation. This air conditioner comprises a first bypass circuit 6 connecting a part between an indoor heat exchanger 3 and a decompressor 4 of a heat pump type refrigerating cycle to the suction side of a compressor 1, the first bypass circuit 6 including a two-way valve 7, and a refrigerant heater 8; and a second bypass circuit 9 connecting a part between a four-way valve 2 connected to the refrigerating cycle and the indoor heat exchanger 3 to an outdoor heat exchanger 5, the second bypass circuit 9 including a two-way valve 10. When the outdoor heat exchanger 5 is defrosted, the two-way valve 7 of the first bypass circuit 6 and the two-way valve 10 of the second bypass circuit 9 are opened to perform heating and defrosting operations.

Description

technical field [0001] The present invention relates to an air conditioner capable of defrosting frost adhering to an outdoor heat exchanger while performing a heating operation by a heat pump. Background technique [0002] At present, the defrosting method in the heat pump air conditioner generally adopts a defrosting method in which the four-way valve is switched to reverse the flow of the refrigerant in the refrigeration cycle. [0003] That is, the refrigerant flow direction during the defrosting operation is the same as that during cooling, and the high-temperature and high-pressure refrigerant flows in the outdoor heat exchanger, thereby melting the frost attached to the heat exchanger. [0004] However, in such a defrosting method, since the heat exchanger on the indoor side becomes an evaporator during defrosting, there is a problem that the indoor temperature drops and the user suddenly feels chilly. [0005] As a solution to this problem, it has been proposed to p...

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
IPC IPC(8): F25B47/02
CPCF25B13/00F25B2341/065F25B2313/0211F25B2313/008Y02B30/72F25B47/022F25B2400/24F25B2500/01F25B41/34Y02B30/70
Inventor 西原义和佐藤新一内山邦泰
Owner PANASONIC CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap