CN218882464U

CN218882464U - Silencer for refrigeration compressor

Info

Publication number: CN218882464U
Application number: CN202223411587.4U
Authority: CN
Inventors: 周正红; 言伟
Original assignee: Jiangsu Baixue Refrigeration Electromechanical Co ltd
Current assignee: Jiangsu Baixue Refrigeration Electromechanical Co ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-04-18
Anticipated expiration: 2032-12-16

Abstract

The utility model belongs to the technical field of the compressor technique and specifically relates to a muffler for compressor, including being located inside amortization chamber, with the air inlet of amortization chamber fluid intercommunication and the air duct that is located the top, be injectd in the air duct and have the outflow passageway of switch-on amortization chamber, the top of outflow passageway is formed with the gas outlet, when the muffler is installed on compressor's end cover, the fluid inlet of gas outlet switch-on compressor, its characterized in that has a pair of first thermal-insulated cavity that is located the gas outlet left and right sides and is located the gas outlet downside and control the thermal-insulated cavity of a pair of second that sets up in the pipe wall of air duct. The utility model discloses the muffler that technical scheme provided is provided with a pair of first thermal-insulated cavity and a pair of second thermal-insulated cavity in the pipe wall of its air duct, and this first, the thermal-insulated cavity of second can reduce by a wide margin from the outside heat transfer to in the outflow passageway of air duct to maintain the lower temperature of heat transfer medium in the outflow passageway.

Description

Silencer for refrigeration compressor

Technical Field

The utility model belongs to the technical field of the compressor technology and specifically relates to a muffler for compressor.

Background

A refrigeration compressor is a core component of refrigeration equipment (such as refrigerators, freezers, and air conditioners) and is capable of compressing a low-pressure heat transfer medium into a high-pressure heat transfer medium and delivering the medium downstream. The periodic suction and discharge of the refrigeration compressor is a major source of noise in the refrigeration equipment. The muffler for the refrigeration compressor is generally installed on an end cover at a fluid inlet of the refrigeration compressor, and a large-space muffling chamber is arranged inside the muffler. The silencing chamber can reflect and resonate the sound wave transmitted from the fluid inlet of the refrigerating compressor, so as to reduce the noise.

However, when the refrigeration compressor is operating, the temperature of the end caps is significantly higher than the temperature of the heat transfer medium within the muffler, and there is heat transfer from the end caps to the heat transfer medium within the muffler. This heat transfer increases the temperature of the heat transfer medium therein, i.e. increases the refrigerant compressor inlet temperature, thereby reducing the compression efficiency of the respective refrigerant compressor.

SUMMERY OF THE UTILITY MODEL

To there being the heat transfer between above-mentioned end cover and the heat transfer medium and having reduced this relevant technical problem of corresponding compressor's compression efficiency, the utility model aims at providing a silencer for compressor, this silencer can effectively reduce the heat transfer between end cover and the heat transfer medium.

In order to achieve the above object, the present invention provides the following technical solutions: a silencer for a refrigeration compressor comprises a silencing cavity, an air inlet and an air guide pipe, wherein the silencing cavity is located inside the silencer, the air inlet is communicated with fluid of the silencing cavity, the air guide pipe is located at the top, an outflow channel communicated with the silencing cavity is defined in the air guide pipe, an air outlet is formed in the top of the outflow channel, and when the silencer is installed on an end cover of the refrigeration compressor, the air outlet is communicated with a fluid inlet of the refrigeration compressor.

In the above technical solution, preferably, the second insulating cavity extends to the bottom of the gas-guide tube.

In the above technical solution, preferably, the outer side wall of the gas-guide tube is provided with a plurality of grooves, and the end cover defines an installation cavity adapted to the gas-guide tube; when the silencer is arranged on the end cover of the refrigeration compressor, at least part of the air duct is positioned in the installation cavity, and a plurality of cavities are formed by the grooves and the inner wall of the installation cavity.

In the above technical solution, preferably, the muffler for a refrigeration compressor further includes a housing and an upper cover detachably connected to a top of the housing, the muffling chamber is defined by the housing and the upper cover, and the gas-guiding pipe is integrated at the top of the upper cover.

In the above technical solution, preferably, the pair of first insulating cavities are in fluid communication with each other.

In the above technical solution, preferably, the pair of second insulating cavities are in fluid communication with each other.

Compared with the prior art, the utility model discloses technical scheme provides a silencer is provided with a pair of first thermal-insulated cavity and a pair of second thermal-insulated cavity in the pipe wall of its air duct, and this first, the thermal-insulated cavity of second can reduce the coefficient of heat conductivity of air duct, reduces the heat transfer in to the outflow passageway from the air duct outside then by a wide margin to maintain the lower temperature of heat transfer medium in the outflow passageway.

Drawings

Fig. 1 is a schematic perspective view of a silencer according to the present invention;

FIG. 2 is a front view of the muffler of FIG. 1; wherein, the muffler is connected to the cylinder cover of the refrigeration compressor;

FIG. 3 is a partial cross-sectional view of the airway tube of FIG. 2.

The figure is marked with:

100. a muffler; 10. an end cap;

1. a housing; 11. an air inlet;

2. an upper cover; 21. a cover plate; 22. a gas-guide tube; 221. a bonding surface; 222. a groove; 223. a bonding convex portion; 23. an outflow channel; 24. an air outlet; 25. a first insulating cavity; 26. a second insulating cavity; there is no necessary link between the heights of H1, H2 and H3.

Detailed Description

To explain the technical contents, structural features, objects and functions of the present invention in detail, the embodiments of the present invention will be described with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a detailed description of various exemplary embodiments or modes of practice of the invention. However, various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. Moreover, the various exemplary embodiments may be different, but are not necessarily exclusive. For example, the particular shapes, configurations and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

Furthermore, in the present disclosure, spatially relative terms such as "under 8230; …," under 823030, ..., below, "" under ...30, below 8230, upper, lower, at 8230, above 823030, upper, side (e.g., as in "side wall"), etc., thereby describe the relationship of one element to another (other) element as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "at" ... below "may include both an orientation of above and below. Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1 shows a muffler 100 (hereinafter referred to as a muffler) for a refrigeration compressor according to the present invention, which can be fixedly installed at a fluid inlet of a corresponding refrigeration compressor and can reduce noise generated from the refrigeration compressor.

As shown in fig. 1, the muffler 100 includes a housing 1 and an upper cover 2 detachably mounted on the top of the housing 1. The casing 1 and the upper cover 2 together define a silencing chamber (not shown) inside, which can emit and resonate the noise sound wave transmitted from the refrigeration compressor, thereby achieving the effect of reducing the noise. An air inlet 11 is provided on a side wall of the casing 1, and the air inlet 11 is exposed to the outside for the heat transfer medium to flow into the muffler 100.

Referring to fig. 2-3, the upper cover 2 includes a cover plate 21 fixedly disposed on the top of the housing 1 and an air duct 22 integrally formed with the cover plate 21, wherein an upper portion of the air duct 22 protrudes upward relative to the cover plate 21. An outflow channel 23 for the heat transfer medium to flow out of the muffler 100 is defined in the gas guide tube 22, and the gas inlet 11, the muffling chamber and the outflow channel 23 are in turn in fluid communication. The top of the outflow channel 23 is formed with an outlet 24, which outlet 24 is in communication with the fluid inlet of the refrigeration compressor when the muffler 100 is fixedly mounted on the end cap 10 of the corresponding refrigeration compressor.

The outer circumferential surface of the air duct 22 includes a coupling surface 221 at the top, a coupling protrusion 223 at the bottom, and a plurality of grooves 222 between the coupling surface 221 and the coupling protrusion 223. The end cover 10 of the refrigeration compressor defines a mounting cavity (not shown) therein adapted to the gas duct 22, the mounting cavity having an engagement groove (not shown) at the bottom. When the silencer 100 is fixedly arranged on the end cover 10, the combining surface 221 contacts with the inner surface of the mounting cavity; the coupling protrusion 223 is positioned in the coupling groove to prevent the muffler 100 from being separated from the end cap 10; the plurality of grooves 222 and the inner contour of the mounting groove are formed with a plurality of cavities to reduce the contact area of the air duct 22 and the end cap 10 and the heat transfer therebetween.

The walls of the airway tube 22 are provided with a plurality of insulating cavities which serve to reduce the thermal conductivity of the airway tube 22 and thereby reduce the heat transfer from the exterior of the airway tube 22 (i.e. the end cap 10) to the outflow channel 23. These insulation cavities include a pair of first insulation cavities 25 disposed on the upper portion of the air duct 22 and opposed to each other in the left-right direction, and a pair of second insulation cavities 26 respectively disposed on the lower sides of the pair of first insulation cavities 25. A pair of first insulating cavities 25 are preferably in fluid communication with each other; likewise, a pair of second insulating cavities 26 may also be in fluid communication with each other. The gas-guide tube 22 has a first height H1, and a pair of first heat-insulating cavities 25 are respectively positioned at two sides of the gas outlet 24 and have a second height H2; a pair of second insulating cavities 26 are respectively located at the lower side of the air outlet 24 and vertically extend to the bottom of the air duct 22, and each second insulating cavity 26 has a third height H3. It will be appreciated that the ratio (H3 + H2)/H1 should be maximized to achieve good thermal insulation while meeting the strength requirements of the airway tube 22.

The utility model discloses the muffler 100 that technical scheme provided has reduced air duct 22's coefficient of heat conductivity through setting up first, the thermal-insulated cavity of second, has reduced the heat transfer of the heat transfer medium in compressor end cover 10 to the air duct 22 then. Thus, the muffler 100 facilitates the maintenance of a relatively low temperature of the heat transfer medium in the gas guide tube 22 and an increase in the compression efficiency of the corresponding refrigeration compressor.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration only, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims, specification and equivalents thereof.

Claims

1. A muffler for a refrigeration compressor comprises a silencing cavity positioned inside, an air inlet communicated with the silencing cavity in a fluid mode and an air guide pipe positioned at the top, wherein an outflow channel communicated with the silencing cavity is defined in the air guide pipe, an air outlet is formed at the top of the outflow channel, and the air outlet is communicated with a fluid inlet of the refrigeration compressor when the muffler is installed at an end cover of the refrigeration compressor; the air duct is characterized in that a pair of first heat insulation cavities positioned at the left side and the right side of the air outlet and a pair of second heat insulation cavities positioned at the lower side of the air outlet and arranged at the left side and the right side are arranged in the duct wall of the air duct.

2. The muffler of claim 1, wherein each of the second insulating cavities extends to a bottom of the airway tube.

3. The silencer of claim 1, wherein the outer side wall of the gas-guide tube is provided with a plurality of grooves, and the end cover defines a mounting cavity matched with the gas-guide tube; when the silencer is arranged on the end cover of the refrigeration compressor, at least part of the air duct is positioned in the installation cavity, and a plurality of cavities are formed by the grooves and the inner wall of the installation cavity.

4. The muffler of claim 1, further comprising a housing and a cover removably attached to a top of the housing, wherein the muffler chamber is defined by the housing and the cover, and wherein the air duct is integrated into the top of the cover.

5. The muffler of claim 1, wherein the pair of first insulating cavities are in fluid communication with each other.

6. The muffler of claim 1 wherein the pair of second insulating cavities are in fluid communication with each other.