Expansion valve components, one-way expansion valve and two-way circulation expansion valve

A technology for expansion valves and components, which is applied in the fields of expansion valve components, one-way expansion valves, two-way flow expansion valves, and mechanical automatic expansion valves. It can solve problems such as increasing energy consumption of air conditioners, increasing refrigerant resistance, and reducing service life. Effect of improving service life, reducing wear and improving life

Active Publication Date: 2013-01-16
浙江泽顺制冷科技有限公司
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AI-Extracted Technical Summary

Problems solved by technology

In reverse circulation, it can only flow through the orifice on the valve core, and the diameter of the valve cannot be changed, which increases unnecessary resistance when the refrigerant circulates and increases the energy consumption of the ...
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Method used

Refrigerant enters the inlet end 2b of passage 2a, and when the flow rate is small, the refrigerant passes through the small orifice 1b2 in front of the valve seat 1b, reaches the hollow groove 1b1, passes through the three-way passage 1c3 on the valve core 1c, and finally flows out This valve. At the same time, the refrigerant reaches the inner chamber 1a2 of the valve body 1a, ensuring that the pressure of the inner chamber 1a2 and the outlet 1a1 of the expansion valve assembly 1 are consistent. At this time, if the refrigeration equipment is just started, the pressure diffe...
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Abstract

The invention provides expansion valve components, a one-way expansion valve and a two-way circulation expansion valve, belonging to the technical field of refrigeration of variable frequency air conditioners. The invention solves the problem that the service life of a valve is shortened due to frequent abrasion of the conventional valve cores and the conventional vale bases. The two-way circulation expansion valve comprises a valve block which is provided with two parallel channels, wherein each channel is provided with an inlet end and an outlet end; an expansion valve component which is provided with a damping structure is connected to each outlet end; a bypass hole for communicating an outlet of the expansion valve component on one channel with the inlet end of the other channel is formed in the valve block; and a protection cover for preventing a medium from being leaked when flowing through the bypass hole and the outlet is welded at each outlet end. The two expansion valve components are arranged in parallel to ensure that a function of two-way circulation is realized; and the movement of a valve core is reduced by the damping structures, so that the service life of the expansion valve components is prolonged and the energy efficiency ratio of the expansion valve components is improved, thereby being of great significance for energy conservation and emission reduction.

Application Domain

Check valvesValve members for absorbing fluid energy +4

Technology Topic

Parallel channelEngineering +5

Image

  • Expansion valve components, one-way expansion valve and two-way circulation expansion valve
  • Expansion valve components, one-way expansion valve and two-way circulation expansion valve
  • Expansion valve components, one-way expansion valve and two-way circulation expansion valve

Examples

  • Experimental program(7)

Example Embodiment

[0048] Example 1
[0049] like figure 1 As shown, the present expansion valve assembly includes a valve body 1a having an inlet 1a3 and an outlet 1a1, a valve seat 1b fixed in the valve body 1a, a valve core 1c, and a spring 1d that causes the valve core 1c to move toward the valve seat 1b. The valve core 1c has a conical head 1c1, the valve seat 1b is provided with a conical hole matching the head 1c1 of the valve core 1c, and between the valve core 1c and the valve seat 1b there is a buffer which can buffer the valve core 1c. Damping structure.
[0050] Specifically, as figure 2 , image 3 , Figure 4 As shown, the valve body 1a is in the shape of a straight cylinder, the inlet 1a3 is located at the port of the straight cylinder valve body 1a, the outlet 1a1 is opened on the side wall of the valve body 1a, and the valve core 1c also has a cylindrical shape connected to the head 1c1 of the valve core 1c. The tail of 1c2. The head 1c1 of the valve core 1c has a front cylinder 1c8, a front throttle cone 1c9, a transition cone, a rear cylinder 1c10, a rear throttle cone 1c11 in sequence, and the cone hole of the valve seat 1b sequentially has a corresponding front cylinder hole 1b4, front throttle The tapered hole 1b5, the permeable groove, the rear cylindrical hole 1b6 and the rear throttle tapered hole 1b7.
[0051] The damping structure includes a three-way channel 1c3 opened in the valve core 1c. One end of the three-way channel 1c3 can be communicated with the permeable groove 1b1, the other end can be communicated with the outlet 1a1 of the valve body 1a, and the other end can be communicated with the valve body 1a. The inner cavity 1a2 of the valve body 1a2 (ie the rear damping cavity) is connected, and the valve seat 1b is also provided with a throttling orifice 1b2 which communicates with the through-hole groove 1b1 and the inlet 1a3 of the valve body 1a. A capillary tube is embedded in the orifice 1b2, so as to change the flow rate of the orifice 1b2.
[0052] A damping ring 5 with an opening is sleeved on the tail portion 1c2 of the valve core 1c, and the damping ring 5 is arranged in a damping ring groove opened on the cylindrical surface where the tail portion 1c2 of the valve core 1c is in close contact with the valve body 1a. Of course, a closed damping ring 5 with a smaller diameter can also achieve the same effect as a damping ring 5 with an opening. A spring seat 3 is fixed at the bottom of the inner cavity 1a2 of the valve body 1a. One end of the spring 1d abuts on the spring seat 3, and the other end abuts on the valve core 1c. The spring seat 3 has a limit rod 3a for restricting the swing of the spring 1d.

Example Embodiment

[0053] Embodiment 2
[0054] The structure and principle of the second embodiment are basically similar to those of the first embodiment, such as Figure 5 As shown, the difference from the first embodiment is the damping structure. The damping structure of the second embodiment includes a three-way channel 1c3 opened in the valve core 1c. The outlet 1a1 of the expansion valve assembly 1 is communicated with, and the other end can be communicated with the inner cavity 1a2 of the valve body 1a. Compared with the first embodiment, the setting of the orifice 1b2 is canceled.

Example Embodiment

[0055] Embodiment 3
[0056] The structure and principle of the third embodiment are basically similar to those of the second embodiment, such as Image 6 As shown, the difference from the second embodiment lies in the damping structure. The damping structure of the third embodiment includes a two-way channel 1c4 opened in the valve core 1c. One end can communicate with the inner cavity 1a2 of the valve body 1a. Compared with the second embodiment, the third embodiment cancels the transmission relationship of the refrigerant between the inside of the valve core 1c and the outlet 1a1, and directly flows through the gap between the two.
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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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