Valve core component and thermal expansion valve using same

A valve core and component technology, used in the field of thermal expansion valves, can solve the problems of poor parallelism between the upper end face and the support part, affecting the valve adjustment accuracy and sealing, and the inability to guarantee the coaxiality of the valve port.

Active Publication Date: 2012-05-09
ZHEJIANG SANHUA CLIMATE & APPLIANCE CONTROLS GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the valve core part of this structure, since the valve core is directly pressed to the valve core seat by the spring, the coaxiality of the valve core and the valve port on the valve core seat cannot be guaranteed, and the spring support seat as a butterfly retaining ring is called a cold stamping part. , the poor parallelism between the upper end surface and the supporting part can cause the force of the

Method used

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  • Valve core component and thermal expansion valve using same
  • Valve core component and thermal expansion valve using same
  • Valve core component and thermal expansion valve using same

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Embodiment Construction

[0057] Figure 9 A typical refrigerating flow diagram of a thermal expansion valve applied to a refrigerating system given in the present invention.

[0058] Such as Figure 9shown. In this refrigeration system, an expansion valve 100 is connected between an evaporator 200 and a condenser 300 . The expansion valve 100 includes a valve body 102 , and an inner cavity 107 extending longitudinally through the valve body 102 , the flow path inlet 108 communicates with the condenser 300 , and the flow path outlet 109 communicates with the evaporator 200 . One end of the valve body 102 is fixed with an air box head as a temperature-sensitive part 103, and the air box head is made up of an air box seat 1031, a transmission plate 1032, a diaphragm 1033, and an air box cover 1034 welded together, and the diaphragm 1033 and the air box cover 1034 are welded. The sealed cavity between them is filled with refrigerant, and communicates with the inner cavity of the sensor 500 arranged at ...

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Abstract

The invention relates to a valve core component and a thermal expansion valve using same, belonging to the technical field of refrigeration control. The valve core component comprises a valve sleeve (7), a valve core seat (1), a valve core (2), an elastic body and a support seat (6), wherein the valve core seat (1) is fixed on the valve sleeve (7) and is provided with a valve port (12); the valve core (2) is placed into the inner cavity of the valve core seat (1); and the support seat (6) is used for supporting the valve core (2) through the elastic body. The valve core component is characterized by further comprising a valve core guide piece (3) which is fixed in the inner cavity of the valve core seat (1) and is provided with a plurality of flow channels, and a valve core support seat (4). In the invention, the axis deviation of the valve core is controlled by setting the valve core guide piece, and the valve port (12) of the valve core seat (1) and the valve core support seat (4) are butted with the valve core (2) through cambered surfaces, so that transverse stress of the valve core (2) can be eliminated, the requirement of coaxiality between the valve core (2) and the valve port (12) is met, and the adjusting accuracy and closing air tightness of a valve are enhanced.

Description

technical field [0001] The invention belongs to the technical field of refrigeration control and is suitable for vapor compression heat pump systems (such as air-conditioning systems) and the like, and in particular relates to a valve core component and a thermal expansion valve using the component. Background technique [0002] The expansion valve as a throttling device is widely used in the circuits of refrigeration systems such as air conditioners, refrigerators, and heat pumps. It controls the flow of refrigerant by sensing the temperature / pressure of the refrigerant at a specific location. It plays the role of throttling and reducing pressure and regulating the flow of refrigerant. In large-scale refrigeration equipment, replaceable core thermal expansion valves are often used. For valves of this type of structure, the valve core parts can be replaced according to the system configuration requirements. The main part can be Universal, so the valve with this structure has...

Claims

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Application Information

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IPC IPC(8): F16K1/38F16K27/08F16K1/32F16K1/42F25B41/06
Inventor 宋红敏陈伯汀刘长青刘杰
Owner ZHEJIANG SANHUA CLIMATE & APPLIANCE CONTROLS GRP CO LTD
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