Outdoor unit of air conditioner

a technology for outdoor units and air conditioners, which is applied in indirect heat exchangers, heating types, lighting and heating apparatus, etc., can solve the problems of power consumption and increase in flow rate, and achieve the effect of maintaining the heat exchanger performance of outdoor units and increasing compressor power

Pending Publication Date: 2022-03-10
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]According to the present invention, for example, in an outdoor unit of an air conditioner used for applications such as data centers, it is possible to make an increase in compressor power due to the increase in pressure loss in the refrigerant flow path in the heat exchanger equal to or less than when a high-pressure refrigerant is used while maintaining the heat exchanger performance of the outdoor unit even when a low-pressure refrigerant is used.

Problems solved by technology

However, the aforementioned structure has the following issues.
However, in the case of a low-pressure refrigerant (for example, a fluorine compound gas having a vapor pressure of 1 MPa or less when stored and transported in a normal environment), since the amount of heat that can be moved per unit flow rate is small, despite the fact that a greater flow is required in order to obtain the required cooling capacity, a reduction of power consumption accompanying the increase in the flow rate was not given special consideration in Japanese Unexamined Patent Application Publication No.

Method used

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  • Outdoor unit of air conditioner
  • Outdoor unit of air conditioner
  • Outdoor unit of air conditioner

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Experimental program
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first embodiment

[0017]The first embodiment according to the present invention will be described. FIG. 2 shows a conceptual diagram of a cross section of the outdoor unit according to the present embodiment as viewed from the front, and FIG. 3 shows a schematic diagram of a part of the piping structure in the vicinity of the heat exchangers.

[0018]The structure of the outdoor unit 10 according to the present embodiment is provided with a housing 100, a plurality of small heat exchangers 200, a vapor pipe 300 as a header for supplying a refrigerant to each small heat exchanger 200, a liquid pipe 400 as a header for collecting the refrigerant from each small heat exchanger 200, an adjusting mechanism 500, and a fan 600.

[0019]The housing 100 includes an intake port 110 at the lower part and an exhaust port 120 at the upper part. The small heat exchangers 200 are installed in two rows in a V shape when viewed from the front. That is, the small heat exchangers 200 are arranged so as to be inclined with re...

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PUM

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Abstract

An outdoor unit includes a fan, a heat exchanger, a vapor pipe, a liquid pipe, and a refrigerant flowing through these pipes, in which the heat exchanger is a parallel flow heat exchanger divided into a plurality and connected in parallel between the vapor pipe and the liquid pipe. The heat exchanger is connected from the vapor pipe via a vapor branch pipe, and the heat exchanger is connected from the vapor pipe via the vapor branch pipe. In addition, the liquid pipe is connected from the heat exchanger via the liquid branch pipe, and the liquid pipe is connected from the heat exchanger via the liquid branch pipe.

Description

BACKGROUND OF THE INVENTIONField of the Invention[0001]The present invention relates to a cooling device for an electronic device. In particular, it relates to an outdoor unit of an air conditioner for a data center using a refrigeration cycle.Description of Related Art[0002]An air conditioner that uses a refrigeration cycle, which is generally called a packaged air conditioner, is used for cooling a server room of a data center.[0003]A large heat exchanger is used for the outdoor unit of an air conditioner, with one or two heat exchangers being installed obliquely inside the housing in order to secure a heat dissipation area. Generally, as a large heat exchanger, a serpentine heat exchanger (a heat exchanger in which flow paths of the refrigerant are connected in series) is used. The fan is installed horizontally at the upper part of the housing. The structure is such that air is taken in from the lower part of the housing and exhausted from the upper part of the housing.[0004]Howe...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F25B41/45F25B41/20F24F1/38
CPCF25B41/45F24F1/38F25B41/20F24F1/18F24F1/16F24F1/14F25B39/02F25B39/04F28D1/024F28D1/0443F28D2021/007
Inventor HACHIYA, MAHIROYOSHIKAWA, MINORU
Owner NEC CORP
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