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Temperature expansion valve

A technology of temperature expansion valve and temperature-sensing cylinder, which is applied in the field of temperature expansion valve and can solve problems such as the inability to obtain a temperature expansion valve

Active Publication Date: 2014-12-24
SAGINOMIYA SEISAKUSHO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In Non-Patent Document 1, various filling methods of the temperature-sensitive cylinder are disclosed, but if no effort is made on the properties of the refrigerant (or gas) filled in the temperature-sensitive cylinder or the method of mixing with respect to the device refrigerant, then Unable to get proper temperature expansion valve

Method used

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  • Temperature expansion valve

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Embodiment Construction

[0026] Next, an embodiment of the temperature expansion valve of the present invention will be described. figure 1 It is a figure which shows the main part of the refrigeration cycle to which the temperature expansion valve of embodiment is applied. exist figure 1 Among them, 10 is a temperature expansion valve according to the embodiment, 20 is a compressor, 30 is a condenser, and 40 is an evaporator, and these components are connected in a ring shape by piping to constitute a refrigeration cycle. The temperature expansion valve 10 has a valve main body 1 , a diaphragm device 2 , a temperature sensing cylinder 3 , and a capillary 4 . The primary side joint pipe 1a of the valve body 1 is connected to the primary pipe a on the condenser 30 side, the secondary side joint pipe 1b is connected to the secondary pipe b on the evaporator 40 side, and the pressure equalizing pipe 1c is connected to the evaporator 40 on the outlet side piping c.

[0027] The compressor 20 compresses...

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Abstract

The present invention provides a temperature expansion valve, which improves the sealed manner of a temperature sensing cylinder. The superheat deviation in the control evaporation temperature region is fixed, and when the body temperature of the temperature expansion valve is lower than the temperature of the temperature sensing cylinder, superheat deviation can also be reduced. The refrigerant flowing in the refrigeration cycle apparatus uses an R32 refrigerant. The R125 refrigerant other than the R32 refrigerant and the non-condensable gas are filled into a temperature sensing tube (3) cross by using a manner of mixed gas cross charging. Alternatively, an R218 refrigerant other than the R32 refrigerant and the non-condensable gas are filled to the temperature sensing tube (3) by using a mixed gas cross filling manner. The non-condensable gas is nitrogen. The volume ratio of the R125 refrigerant and nitrogen in the superheated gaseous state is in the range of 84:16 to 61:39. The volume ratio of the R218 refrigerant and nitrogen in the superheated gaseous state is in the range of 52:48 to 36:64. The non-condensable gas is not limited to nitrogen, can also be argon, carbon dioxide, or helium.

Description

technical field [0001] The present invention relates to a temperature expansion valve which senses the evaporating temperature by means of a temperature-sensing cylinder arranged on the outlet side piping of the evaporator in a refrigeration cycle, and utilizes the internal pressure of the pressurized chamber which changes according to the sensed temperature and the uniformity introduced from the evaporator. The pressure difference of the evaporation pressure of the pressure chamber automatically adjusts the valve opening of the valve port through which the refrigerant of the device flows, and performs superheat control of the refrigeration cycle. Background technique [0002] Conventionally, the thermosensitive cylinder, capillary tube, and pressure receiving chamber of the temperature expansion valve (hereinafter referred to simply as the induction cylinder) are generally filled with the device refrigerant flowing in the refrigeration cycle. However, in order to improve low...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B41/06
Inventor 高田裕正别所直登池田忠显泽田治
Owner SAGINOMIYA SEISAKUSHO INC