CN205262003U - Thermostatic expansion valve that makes an uproar falls - Google Patents

Abstract

A noise-reducing thermal expansion valve, including a valve body, a diaphragm installed on the top of the valve body and capable of changing according to the temperature and pressure of the refrigerant from the evaporator, and a push rod that transmits the change. There is a longitudinal hole through the channel on the valve body, and the ejector rod is installed at the longitudinal hole, and the transverse limit on the longitudinal hole is equipped with a damping clip for clamping the ejector rod; the damping clip includes an annular part with a gap, and the annular part The left and right notches are provided with elastic detours that detour toward the inner hole of the annular part, and the ends of the two elastic detours are provided with arcs, and the clamping area for elastically clamping the ejector rod is formed between the two arcs; the damping clip is located at below the passage. The utility model has ingenious and reasonable structural design and is worthy of popularization and application.

Description

Noise reduction thermal expansion valve

technical field

The utility model relates to a valve, in particular to a thermal expansion valve.

Background technique

The expansion valve is an important part of the refrigeration system, and is generally installed between the liquid storage cylinder and the evaporator. The expansion valve throttles the medium-temperature and high-pressure liquid refrigerant into low-temperature and low-pressure wet steam, and enters the evaporator to absorb heat to achieve refrigeration. The expansion valve can control the flow rate of the valve through the change of superheat at the end of the evaporator, so as to prevent the underutilization of the evaporator area or the phenomenon of frosting.

The main source of vibration of expansion valves on the market is medium-temperature and high-pressure refrigerant whose gas directly impacts the slender mandrel, which causes the slender mandrel to be repeatedly impacted and reset by impact, resulting in high-frequency vibration. It will directly affect the vibration frequency of the expansion valve. If it is close to the vibration frequency of the automobile air-conditioning compressor, it will cause resonance, and the vibration of the expansion valve will intensify, which will directly damage the expansion valve.

Utility model content

The utility model aims to solve the above-mentioned shortcomings of the prior art, and provides a noise-reducing thermal expansion valve capable of damping the vibration of the ejector rod and reducing the vibration of the expansion valve, which meets the user's requirement for small vibration during the use of the thermal expansion valve.

The technical solution adopted by the utility model to solve its technical problems: this noise-reducing thermal expansion valve includes a valve body, a diaphragm installed on the top of the valve body and capable of changing according to the temperature and pressure of the refrigerant from the evaporator, and a push rod that transmits the change , there is a channel radially penetrating through the valve body under the diaphragm, and a longitudinal hole through the channel is opened on the valve body. The ejector rod is installed at the longitudinal hole, and the transverse limit on the longitudinal hole is equipped with a damping clip for clamping the ejector rod; The damping clip includes an annular portion with a notch, and the left and right notches of the annular portion are provided with elastic detours that detour toward the inner hole of the annular portion, and the ends of the two elastic detours are provided with arcs, and an elastic loop is formed between the two arcs. Clamping area that clamps the ram; the damping clamp is located under the channel. With this setting, when the medium-temperature and high-pressure gaseous refrigerant blows the ejector rod through the channel, the ejector rod is blown and shaken by the gas. At this time, the arc-shaped part of the damping clip clamping the ejector rod can dampen and slow down the swing of the ejector rod. It can avoid the violent vibration of the ejector rod, which can significantly reduce the vibration of the expansion valve. It can also avoid the vibration frequency similar to that of the automobile air-conditioning compressor, avoiding resonance of the expansion valve, and avoiding damage to the expansion valve.

To further improve, a jack sleeve is installed on the longitudinal hole, and the center of the jack sleeve is provided with a center hole that runs through its upper and lower end faces, and the clearance of the jack fits at the center hole of the jack sleeve. With this arrangement, the ejector sleeve can be used to make the medium-temperature and high-pressure refrigerant impact the ejector sleeve, thereby further avoiding the impact and shaking of the ejector rod.

Further perfected, the ring part is a circular ring. This setting is convenient for processing.

Further improvement, the cross section of the annular part is circular. This setting is convenient for processing.

Further improvement, the ring part, the elastic detour part, and the arc part are all made of spring steel wire to form a damping clip. This damping clip is convenient for mass processing, and the product quality is more stable and the cost is lower.

The beneficial effects of the utility model are: the structure design of the utility model is ingenious and reasonable, and the setting of the damping clip installed on the ejector rod under the passage can play a role in damping the vibration of the ejector rod, and the ejector rod is covered with a top The role of the rod sleeve makes the medium-temperature and high-pressure refrigerant directly impact the ejector rod sleeve, thereby further reducing the pressure vibration of the ejector rod, avoiding the vibration of the ejector rod directly causing the vibration of the expansion valve, and also avoiding the vibration of the ejector rod. The resonance phenomenon of the expansion valve is caused by the similar vibration frequency of the compressor, which is worthy of popularization and application.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the structural representation of damping clip in the utility model;

Fig. 4 is a B-B sectional view of Fig. 3 .

Explanation of reference numerals: valve body 1, channel 1-1, longitudinal hole 1-2, diaphragm 2, ejector rod 3, damping clip 4, annular part 4-1, elastic detour part 4-2, arc part 4- 3. Clamping area a.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described:

Referring to the accompanying drawings: This noise-reducing thermal expansion valve includes a valve body 1, a diaphragm 2 installed on the top of the valve body 1 and capable of changing according to the temperature and pressure of the refrigerant from the evaporator, and a push rod 3 that transmits the change, and the diaphragm 2 There is a passage 1-1 radially penetrating through the valve body 1 at the bottom, and a longitudinal hole 1-2 passing through the passage 1-1 is opened on the valve body 1. The ejector rod 3 is installed at the longitudinal hole 1-2, and the longitudinal hole 1-2 The upper lateral limit is fitted with a damping clip 4 for clamping the ejector rod 3;

The damping clip 4 includes an annular portion 4-1 with a notch, and the left and right notches of the annular portion 4-1 are provided with an elastic detour 4-2 that detours to the inner hole of the annular portion 4-1, and the two elastic detours 4-2 The ends are provided with arc-shaped parts 4-3, and the clamping area a for elastically clamping the ejector rod 3 is formed between the two arc-shaped parts 4-3;

Damping clip 4 is located below channel 1-1.

A push rod cover 5 is installed on the longitudinal hole 1-2, and the push rod 3 clearance fits at the center hole of the push rod cover 5 .

The annular part 4-1 is circular.

The cross section of the annular portion 4-1 is circular.

The annular part 4-1, the elastic detour part 4-2, and the arc part 4-3 are all integrally made of a damping clip 4 made of a spring steel wire material.

The expansion valve utilizes the setting of the damping clip 4 installed on the ejector rod 3 under the passage 1-1, which can play the role of damping the ejector rod vibration, and the ejector rod 3 is covered with the ejector rod sleeve 5, so that the medium temperature The high-pressure gaseous refrigerant directly impacts the ejector rod sleeve 5 instead of the ejector rod 3, thereby further reducing the pressure vibration of the ejector rod 3, avoiding the vibration of the ejector rod 3 directly causing the vibration of the expansion valve, and also avoiding The resonance phenomenon of the expansion valve caused by the vibration frequency similar to that of the automobile air-conditioning compressor is worthy of popularization and application.

Although the present invention has been illustrated and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made within the scope of the claims.

Claims (5)

1. a noise reduction heating power expansion valve, comprise valve body (1), be installed on valve body (1) top and can be according to carrying out flash-pot refrigerant temperature, pressure change diaphragm (2) and transmit the push rod (3) of this variation, diaphragm (2) below has the passage (1-1) that radially runs through valve body (1), it is characterized in that: the longitudinal hole (1-2) that has penetrating via (1-1) on described valve body (1), described push rod (3) is installed on longitudinal hole (1-2) and locates, the upper cross spacing of described longitudinal hole (1-2) is combined with the damping folder (4) for clamping push rod (3),

Described damping folder (4) comprises notched ring part (4-1), on the left and right breach of described ring part (4-1), be all provided with the elasticity roundabout portion (4-2) roundabout to ring part (4-1) endoporus, described in two, the end of the roundabout portion of elasticity (4-2) is all provided with curved portions (4-3), forms the clamp area (a) of resilient clamp push rod (3) between two curved portions (4-3);

Described damping folder (4) is positioned at passage (1-1) below.

2. noise reduction heating power expansion valve according to claim 1, is characterized in that: top stem casing (5) is installed on described longitudinal hole (1-2), and described push rod (3) matched in clearance is in the central hole of top stem casing (5).

3. noise reduction heating power expansion valve according to claim 1, is characterized in that: described ring part (4-1) is annular.

4. noise reduction heating power expansion valve according to claim 3, is characterized in that: the cross section of described ring part (4-1) is for circular.

5. noise reduction heating power expansion valve according to claim 4, is characterized in that: described ring part (4-1), the roundabout portion of elasticity (4-2), curved portions (4-3) all utilize spring steel wire material to be made into integration damping folder (4).