Throttling device and refrigeration cycle system equipped with the throttling device
A technology of throttling device and refrigerant, applied in the direction of fluid circulation arrangement, refrigerator, refrigeration components, etc., can solve the problems of having to replace the shell, not easy to remove, bite and so on
Active Publication Date: 2018-04-06
SAGINOMIYA SEISAKUSHO INC
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Problems solved by technology
[0008] As shown in Patent Document 1, when the discharge amount is set by the above-mentioned fixed port, when the set discharge amount deviates due to manufacturing errors of components constituting each throttle device, in order to adjust the discharge amount to an appropriate amount, there are cases where the housing must be replaced
In addition, in case foreign matter in the refrigerant not captured by the filter clogs the fixing port, it is not easy to remove the foreign matter, and the housing must be replaced.
In addition, if the valve body moves in the direction to close the valve hole, the substantially conical surface of the valve body may bite into the valve seat formed on the periphery of the opening end of the valve hole.
Method used
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Embodiment Construction
[0027] figure 2 The configuration of the first embodiment of the expansion device of the present invention, which is applied to one example of the refrigeration cycle system, is schematically shown together with the refrigeration cycle system.
[0028] Throttling devices such as figure 2 As shown, it is disposed between the outlet of the condenser 6 and the inlet of the evaporator 2 in the piping of the refrigeration cycle system. The throttle device is joined to the primary side piping Du1 at one end 10E1 of the tube main body 10 described later, and is joined to the secondary side piping Du2 at the other end 10E2 of the tube main body 10 for discharging refrigerant. The primary pipe Du1 is connected to the outlet of the condenser 6 and the throttle device, and the secondary pipe Du2 is connected to the inlet of the evaporator 2 and the throttle device. Such as figure 2 As shown, between the outlet of the evaporator 2 and the inlet of the condenser 6 , the compressor 4 ...
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The invention provides a throttling device and a refrigeration cycle system equipped with the throttling device. In the throttling device, the discharge amount can be adjusted, and even if the valve body moves in a direction to close the valve hole, the valve body can be prevented from biting the valve seat. In the throttling device, at a position corresponding to the opening end of the valve port (18P) on the outer peripheral portion of the tapered portion (20P) of the needle member (20), the outer peripheral portion of the tapered portion (20P) is positioned at a position relative to the valve port ( 18P) is disposed so that a predetermined gap corresponding to the thickness of the pad member (22) is formed on the periphery of the opening end.
Description
technical field [0001] The present invention relates to a throttling device and a refrigeration cycle system provided with the throttling device. Background technique [0002] In a refrigeration cycle system in an air conditioner, it has been proposed to include a differential pressure type throttle instead of a capillary tube as a throttle. For example, the differential pressure throttling device disclosed in Patent Document 1 is used to properly control the pressure of the refrigerant between the condenser outlet and the evaporator inlet in order to operate the compressor efficiently according to the outside air temperature, and In the refrigerating cycle system in which the number of revolutions of the compressor can be changed, the pressure of the refrigerant according to the number of revolutions of the compressor is optimally controlled from the viewpoint of labor saving. For example, the expansion device is connected to a primary-side pipe connected to the condenser ...
Claims
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IPC IPC(8): F25B41/06F25B41/31
CPCF25B2341/06F25B41/37
Inventor 高田裕正当山雄一郎
Owner SAGINOMIYA SEISAKUSHO INC