Vehicle air conditioner double pressure switch

Abstract

The invention discloses a vehicle air conditioner double pressure switch which comprises a shell and a pressure chamber. The vehicle air conditioner double pressure switch is characterized by also comprises a plastic membrane, a high-pressure membrane, a low-pressure membrane, an insulating transmission rod, a pressure control panel, a movable terminal pin and a stationary terminal pin, wherein the movable terminal pin and the stationary terminal pin with relative positions are arranged inside the shell; the plastic membrane is arranged at the inner side of the bottom of the shell, and the plastic membrane is connected with the high-pressure membrane at the top of the plastic membrane; the top of the high-pressure membrane is provided with the pressure control panel for controlling the opening and closing of the movable terminal pin and the stationary terminal pin; and the low-pressure membrane is arranged at the bottoms of the movable terminal pin and the stationary terminal pin, and the bottom of the low-pressure membrane is provided with the pressure control panel. The invention overcomes the defects of complex installation structure and easiness in causing refrigerant leakage existing in the traditional vehicle air conditioner pressure switch and provides a vehicle air conditioner double pressure switch with novel structure.

Description

Technical field [0001] The invention relates to a pressure switch, in particular to a dual pressure switch for automobile air conditioners. Background technique [0002] Automobile air-conditioning and refrigeration systems generally install various forms of pressure switches to detect and control the pressure of the refrigerant in the air-conditioning refrigeration system. According to the principle of thin shell instability and displacement mutation, the air-conditioning pressure switch can control the size of the pressure chamber to make it instability under the set pressure, and push the force transmission device to control the on and off of the switch. Currently, two pressure control switches are used to control the low pressure and high pressure in the air conditioning refrigeration system. The two pressure control switches result in a complicated installation structure, the overall is not compact enough, and the cost is high. At the same time, two switches need to be insta...

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to overcome the defect that the existing automotive air-conditioning pressure switch has a complicated installation structure and easily cause refrigerant leakage, thereby providing a dual-pressure switch of an automotive air-conditioning with a new structure, which can simultaneously control the low pressure in the air-conditioning refrigeration system. pressure and high pressure, which saves a switch and reduces an installation point, which also reduces a possible refrigerant leakage point, which is more suitable for practical use and has industrial utilization value

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