Exhaust valve, compressor and pump driving loop heat pipe

A technology of exhaust valves and exhaust holes, which is applied in the direction of machines/engines, pump components, mechanical equipment, etc., can solve the problems of reduced energy-saving effect in the working mode of pump-driven heat pipes, achieve energy efficiency and improve operation stability, and improve operation Reliability, the effect of avoiding overcompression

Pending Publication Date: 2019-08-23
BEIJING UNIV OF TECH
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AI-Extracted Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the energy-saving effect of the pump-driven heat pipe working mode is reduced due to the absence of a specially designed air pump in ...
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Method used

[0037] The present invention also provides a pump drive circuit heat pipe or two-phase cooling circuit, which includes the above-mentioned compressor. By setting the ratio of the thickness of the valve plate to the diameter of the exhaust hole at 0.010≤δ/d<0.025, the pressure increase of the compressor using the exhaust valve can adapt to the flow resistance characteristics in the cooling system to the greatest exte...
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Abstract

The invention discloses an exhaust valve, a compressor and a pump driving loop heat pipe. The exhaust valve comprises a valve disc, a limiting plate, a connecting piece, a supporting piece or a valveplate and the like, wherein the valve plate is provided with an exhaust hole with the aperture or equivalent aperture of d, the valve plate is further provided with a connecting piece mounting hole, the distance between the exhaust hole and the mounting hole is L, the valve disc is an elastic flat plate with a thickness of delta, the mounting ends of the valve disc and the limiting plate are provided with through holes through which the connecting piece passes, the portion, near the through hole, of the limiting plate is flat, and the other end of the limiting plate warps upwards. During assembly, the end, without the through hole, of the valve disc covers the exhaust hole, the other end of the valve disc is pressed on the mounting hole in the valve plate by the limiting plate, and the valve disc, the limiting plate and the valve plate are assembled into a whole through the connecting piece. The relation between delta and d of the exhaust valve meets the relation that delta divided byd is less than 0.025 and equal to or greater than 0.010, and the relation between delta and L meets the relation that delta divided by L is greater than 70 and equal to or less than 150. The operatingenergy efficiency ratio and reliability of the compressor adopting the exhaust valve can be effectively improved, and exhaust noise can be obviously lowered.

Application Domain

Technology Topic

Loop heat pipeEngineering +3

Image

  • Exhaust valve, compressor and pump driving loop heat pipe
  • Exhaust valve, compressor and pump driving loop heat pipe
  • Exhaust valve, compressor and pump driving loop heat pipe

Examples

  • Experimental program(1)

Example Embodiment

[0028] The present invention will be described in detail below with reference to the drawings and embodiments.
[0029] reference figure 1 The exhaust valve includes a valve plate (1), a limit plate (2), a screw (3), a support (4), etc. The valve plate (4) is provided with an exhaust hole with a diameter of d, and the support (4) The upper end cover (19) of the compressor, the upper end cover (19) has screw (3) mounting holes, the distance between the exhaust hole and the mounting hole is L, the valve plate (1) is an elastic flat plate, and its thickness is δ, the mounting end of the valve disc (1) and the limit plate (2) has a through hole for the screw (3) to pass through. The limit plate (2) is flat near the through hole, and the other end is warped upward, And the relationship between δ and d is: 0.010≤δ/d <0.025, Figure 5 It is a graph of the change between the compressor energy efficiency ratio (COP) and δ/d of the present invention; when assembling, one end of the valve plate (1) without a through hole is covered with the exhaust hole, and the other end is covered by a limit plate (2) The valve plate (4) is pressed against the installation hole of the valve plate (4), and the valve plate (1), the limit plate (2) and the valve plate (4) are assembled into one body by screws (3).
[0030] The relationship between δ and L of the above exhaust valve is: 70
[0031] For the above exhaust valve, when the exhaust holes are multiple or non-circular holes, if the area of ​​all exhaust holes is A, the equivalent diameter is d 2 = 4A/π.
[0032] The valve disc material of the above exhaust valve is 20C, 7C27Mo2, 3Cr13, or high-strength strip steel such as AISI 1095, AISI 420, UHBSS716, AISI 301 (18-8) and 17-7PH.
[0033] A sealing edge protruding from 0.05 mm to 0.5 mm is provided around the exhaust hole of the exhaust valve.
[0034] The profile line of the limit plate (2) of the above exhaust valve is a circular arc.
[0035] The compressor including the above exhaust valve is a rolling piston compressor. This is the preferred structural form of the compressor of the present invention.
[0036] The compressor is characterized in that the compressor is or is a sliding vane compressor, a piston compressor, a screw compressor, a scroll compressor, and the like. Image 6 It is a graph of the change between compressor noise and δ/L of the present invention.
[0037] The present invention also provides a heat pipe or two-phase cooling circuit of a pump driving circuit, which includes the above-mentioned compressor. By setting the ratio of the thickness of the valve plate to the discharge aperture at 0.010≤δ/d <0.025, the pressure increase of the compressor using this exhaust valve can adapt to the flow resistance characteristics in the cooling system to the greatest extent; the ratio of the valve plate thickness to the valve plate length is set at 70
[0038] The biggest difference from the prior art is that most of the prior art is suitable for refrigeration and air-conditioning conditions. This patent is suitable for use in air pump-driven heat pipe natural cooling systems, that is, the applicable field is different; the thickness of the valve plate of this patent Obviously thinner, which can be seen from the parameter range.
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Description & Claims & Application Information

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