CN204574645U - A kind of novel choke valve denoising device - Google Patents

Abstract

The utility model discloses a novel noise reduction device for a throttle valve, which comprises a sound-absorbing shell, one end of the sound-absorbing shell has an inlet pipe, and the other end has an outlet pipe. The flow cross-section and the flow cross-section of the outlet pipe, the outlet end of the throttle valve body is connected to the inlet pipe, and the outlet end of the throttle valve body is connected to a noise reducer; the noise reducer includes a mesh seat, and the mesh seat has In the annular slot, the bottom edge of the filter screen device is inserted into the annular slot and clamped between the two side walls of the annular slot. It allows the throttling fluid to pass through the noise reducer. Because the head end of the multi-layer filter device is sealed, the fluid can only flow through the small holes on the side. The fluid is dispersed into multiple streams of fine fluid, and the flow rate is reduced, resulting in noise. At the same time, the fluid flows into a large space, making the gas expand in the large space, further reducing the noise, and the noise reduction effect is good.

Description

A New Type of Throttle Valve Noise Reduction Device

Technical field:

The utility model relates to the technical field of air-conditioning noise reduction, in particular to a novel throttle valve noise reduction device.

Background technique:

In the existing air conditioners, a muffler is generally connected to the throttling part for noise reduction. However, the existing muffler is generally formed with two flow nozzles on the silencer shell, and the flow cross section of the two flow nozzles It should be smaller than the flow section of the silencer shell of the muffler, so that the incoming refrigerant enters the silencer shell through the port, and the flow rate of the refrigerant is reduced through the large space inside the silencer shell, and buffered to reduce noise. However, because there is no other speed that can prevent the flow of refrigerant in the sound-absorbing shell, the middle part of the refrigerant is directly passed through the flow pipe of the sound-absorbing shell and passed through the flow pipe at the other end. Discharge, which greatly reduces the effect of noise reduction, making the noise reduction not ideal.

Utility model content:

The purpose of this utility model is to overcome the deficiencies of the prior art and provide a new type of throttle valve noise reduction device, which allows the throttled fluid to pass through the noise reducer. It can only flow through the small holes on the side, the fluid is dispersed into multiple streams of fine fluid, the flow velocity is reduced, and the noise generated is reduced. At the same time, the fluid flows into a large space, making the gas expand in the large space, further reducing noise and reducing noise The effect is good.

The scheme that the utility model solves described technical problem is:

A new type of throttle valve noise reduction device, including a sound-absorbing shell, one end of the sound-absorbing shell has an inlet pipe, and the other end has an outlet pipe, and the flow section in the middle of the sound-absorbing shell is larger than the flow section of the inlet pipe and the outlet pipe The flow section of the throttle valve body is connected to the inlet pipe at the outlet end of the throttle valve body, and a noise reducer is connected to the outlet end of the throttle valve body;

The noise reducer includes a net seat with an annular slot, and the bottom edge of the filter screen device is inserted into the annular slot and clamped between the two side walls of the annular slot.

The filter screen device is composed of at least three layers of filter screens, the three layers of filter screens are sequentially inserted and sleeved together, and the bottom of the three-layer filter screen is inserted into the annular slot and clamped between the two side walls of the annular slot.

The outlet end of the throttle valve body extends into the inlet pipe to the middle of the sound-absorbing housing, and the end of the throttle valve body is inserted into a sleeve and fixed with a net seat.

A valve seat is fixed in the part of the throttle body protruding into the sound-absorbing housing, and an axial through hole is formed on the valve seat.

A groove is formed on the outer wall of the valve seat, and the ribs formed on the inner wall of the throttle valve body corresponding to the groove are clamped in the groove to form the fixing between the valve seat and the throttle valve body.

The bottom of the outermost filter screen in the three-layer filter screen is a sealing part.

The outstanding effect of the present utility model is:

Compared with the prior art, it allows the throttling fluid to pass through the noise reducer. Since the head end of the multi-layer filter device is sealed, the fluid can only flow through the small holes on the side, and the fluid is dispersed into multiple streams of fine fluid. The flow velocity is reduced, and the noise generated is reduced. At the same time, the fluid flows into a large space, causing the gas to expand in the large space, further reducing the noise, and the noise reduction effect is good.

Description of drawings:

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

FIG. 2 is a partially enlarged view of FIG. 1 .

Detailed ways:

The utility model is described in detail below in conjunction with the accompanying drawings and specific preferred embodiments, so that the advantages and characteristics of the utility model can be more easily understood by those skilled in the art. These embodiments are only for illustrative purposes and are not intended to The scope of the present utility model is limited.

Embodiment, as shown in Figures 1 to 2, a new type of noise reduction device for a throttle valve includes a sound-absorbing housing 10, one end of the sound-absorbing housing 10 has an inlet pipe 11, and the other end has an outlet pipe 12. The flow section in the middle of the housing 10 is larger than the flow section of the inlet pipe 11 and the flow section of the outlet pipe 12, the outlet end of the throttle valve body 2 is connected to the inlet pipe 11, and the outlet end of the throttle valve body 2 is connected to a noise reducer 20;

Further, the noise reducer 20 includes a net seat 1, which has an annular slot 11, and the bottom edge of the filter screen device 3 is inserted into the annular slot 11 and clamped on the two sides of the annular slot 11. between the side walls.

Further, the filter screen device 3 is composed of at least three layers of filter screens 31, the three layers of filter screens 31 are sequentially inserted together, and the bottom of the three layers of filter screens 31 is inserted into the annular slot 11 and clamped in the annular slot 11. Between the two side walls of the slot 11.

Further speaking, the outlet end of the throttle valve body 2 extends into the inlet pipe 11 to the middle of the muffler housing 10 , and the end of the throttle valve body 2 is inserted into a sleeve and fixed with the net seat 1 .

Further speaking, a valve seat 4 is fixed in the part of the throttle valve body 2 protruding into the sound-absorbing housing 10 , and an axial through hole 41 is formed on the valve seat 4 .

Furthermore, a groove 42 is formed on the outer wall of the valve seat 4, and the ribs formed on the inner wall of the throttle valve body 2 corresponding to the groove 42 are clamped in the groove 42 to form the valve seat 4. Fixing with throttle valve body 2.

Further speaking, the bottom of the outermost filter screen 31 among the three layers of filter screens 31 is a sealing part 32 .

It makes the throttling fluid pass through the noise reducer 20, the fluid is dispersed into a plurality of fine fluids, and a part of the energy carried by the fluid is consumed when it hits the filter screen 31 to do work, the total energy of the fluid is reduced, and the flow rate is reduced , and the noise generated is reduced. At the same time, the bottom of the outermost filter screen 31 in the three-layer filter screen 31 is a sealing part 32, so that the fluid can only flow from the side of the filter screen 31, thus flowing to the sound-absorbing shell 10, allowing the gas to expand in a large space, thereby further reducing noise.

The above embodiments are only used to illustrate the utility model, but not to limit the utility model. Those of ordinary skill in the relevant technical fields can also make various changes and modifications without departing from the spirit and scope of the utility model. , so all equivalent technical solutions also belong to the category of the utility model, and the patent protection scope of the utility model should be defined by the claims.

Claims (6)

1. A novel throttle valve noise reduction device, comprising a sound-absorbing housing (10), characterized in that: one end of the sound-absorbing housing (10) has an inlet pipe (11), and the other end has an outlet pipe (12) , the flow section in the middle of the muffler housing (10) is larger than the flow section of the inlet pipe (11) and the flow section of the outlet pipe (12), and the outlet end of the throttle valve body (2) is connected to the inlet pipe (11), The outlet end of the throttle valve body (2) is connected with a noise reducer (20); The noise reducer (20) includes a net base (1), which has an annular slot (11), and the bottom edge of the filter screen device (3) is inserted and sleeved in the annular slot (11) and clamped Hold between the two side walls of the annular slot (11). 2. A novel throttle valve noise reduction device according to claim 1, characterized in that: the filter screen device (3) is composed of at least three layers of filter screens (31), and the three layers of filter screens (31) The bottoms of the three layers of filter screens (31) are inserted and sleeved in the annular slot (11) and clamped between the two side walls of the annular slot (11). 3. A new type of throttle valve noise reduction device according to claim 1, characterized in that: the outlet end of the throttle valve body (2) extends into the inlet pipe (11) to the muffler housing (10) In the middle, the end of the throttle valve body (2) is plugged into a sleeve and fixed with a net seat (1). 4. A new type of throttle valve noise reduction device according to claim 1, characterized in that: a valve seat is fixed in the part of the throttle valve body (2) extending into the silencer housing (10) (4), the valve seat (4) is formed with an axial through hole (41). 5. A novel throttle valve noise reduction device according to claim 4, characterized in that: grooves (42) are formed on the outer wall of the valve seat (4), and the throttle valve body (2) The ridge formed on the inner wall corresponding to the groove (42) is clamped in the groove (42) to form the fixing of the valve seat (4) and the throttle valve body (2). 6. A novel throttle valve noise reduction device according to claim 2, characterized in that: the bottom of the outermost filter screen (31) in the three-layer filter screen (31) is a sealing part (32 ).