Machine for checking tightness of pressure retaining valve of air conditioning indoor unit
A technology of air-conditioning internal unit and pressure-holding valve, which is applied in the direction of liquid-tightness measurement using liquid/vacuum degree, and detecting the appearance of fluid at the leakage point, etc., which can solve the problem of low efficiency, no pressure-holding valve, and difficult to grasp the detection standard and other issues, to achieve the effect of high degree of mechanization, accelerated detection speed, and improved product qualification rate
Inactive Publication Date: 2010-07-28
潘炎忠
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Problems solved by technology
At present, there is no special testing equipment for the pressure maintaining valve, and it can only be tested manually by connecting the pneumatic machine; not only the efficiency is low, but also the testing standard is difficult to grasp
Method used
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[0025] Further explanation is given below.
[0026] Figure 9 Shown is the testing product of the present invention - pressure maintaining valve F. The valve core in the inner cavity of the valve realizes the opening and closing of the valve port by the pressure exerted by the spring; therefore, the sealing performance of the valve port determines the sealing performance of the pressure maintaining valve; quality.
[0027] The air-conditioning internal unit pressure-holding valve airtightness testing machine shown in the figure includes a frame 1; several guide posts 3 parallel to each other are vertically fixed on the frame, and the middle parts of the tops of these guide posts are suspended and fixed There is a sealed cavity 10 isolated from the outside world, and the sides of the sealed cavity are surrounded by transparent baffles 10-1, so that the operator can check whether there is any leakage of the pressure-holding valve in the sealed cavity by observation. A group o...
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The invention relates to a machine for checking the tightness of a pressure retaining valve of an air conditioning indoor unit, and aims to endow the provided machine with the characteristics of high detection quality, high working efficiency and labor-saving and convenient test. The invention adopts the technical scheme that: the machine for checking the tightness of the pressure retaining valve of the air conditioning indoor unit comprises a stander; a plurality of guide poles in parallel with one another are vertically fixed on the stander; a sealing cavity is fixed on a central part above the guide poles in a suspension way; transparent baffles are arranged around the sealing cavity; a bottom plate of the sealing cavity is provided with a group of through holes matched with the outline of the pressure retaining valve, while a top plate is provided with a windpipe joint and a water pipe joint respectively; a positioning plate capable of vertically moving is arranged below the bottom plate; a plurality of guide sleeves correspondingly embedded with the guide poles are arranged around a bedplate of the positioning plate; the positioning plate is provided with a group of positioning points which are correspondingly and vertically aligned with the through holes on the bottom plate respectively; a ventilation hole communicated with a high-pressure air source is formed in the centre of each positioning point; and thrust is applied to the bottom end of the positioning plate by a power mechanism.
Description
technical field [0001] The invention relates to a testing device, in particular to a testing machine for the sealing performance of a pressure maintaining valve of an air conditioner internal unit. Background technique [0002] The pressure maintaining valve is an important part of the air conditioner internal unit. One end of the component is tightened on the joint of the refrigeration pipe of the air conditioner internal unit; the rubber plug of the pressure maintaining valve can be opened at the other end by using the connecting sleeve of the inflator to directly press the air conditioner internal unit. Inflate, when inflated to the specified pressure, the connecting sleeve can be pulled out, relying on the spring pressure of the pressure maintaining valve and the pressure of the gas, the rubber plug is pressed tightly on the inverted inner conical surface to produce a sealing effect. The sealing performance of the pressure maintaining valve is directly related to the sea...
Claims
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IPC IPC(8): G01M3/04
Inventor 潘炎忠
Owner 潘炎忠