CN213955696U

CN213955696U - Air return pipe assembly of refrigerating machine

Info

Publication number: CN213955696U
Application number: CN202023185709.3U
Authority: CN
Inventors: 黄光宇
Original assignee: Chongqing Le'er Cooling And Heating Equipment Manufacturing Co ltd
Current assignee: Chongqing Le'er Cooling And Heating Equipment Manufacturing Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-08-13
Anticipated expiration: 2030-12-25

Abstract

The utility model provides a refrigerator muffler assembly, which comprises a muffler and at least one capillary tube, wherein the tube wall of the muffler is inwards sunken to form a U-shaped mounting groove, and the U-shaped mounting groove extends along the axial direction of the muffler; the number of the U-shaped mounting grooves is the same as that of the capillaries, and the capillaries are embedded into the U-shaped mounting grooves in a one-to-one correspondence manner; the outer wall of the capillary tube, which faces one side of the opening of the U-shaped mounting groove, is provided with an arc surface, and the arc surface and the outer wall of the air return pipe are on the same cylindrical surface. The utility model discloses a form U type mounting groove on the muffler, with the capillary embedding in U type mounting groove, effectively increased the area of contact between muffler and the capillary to the heat exchange efficiency of return air pipe assembly has been improved.

Description

Air return pipe assembly of refrigerating machine

Technical Field

The utility model relates to a muffler technical field, concretely relates to refrigerator return air pipe subassembly.

Background

In order to improve the refrigerating efficiency of a refrigerating system, a capillary tube on a refrigerator of equipment such as a refrigerator and a freezer needs to exchange heat with a gas return pipe in parallel, and a gas return pipe assembly formed by the capillary tube and a heat return pipe forms a heat return circulating device. In order to meet the requirement of regenerative cycle, the contact length between the low-pressure air return pipe and the capillary tube is at least more than 0.7m when the evaporator is installed, so that the capillary tube and the air return pipe can carry out sufficient heat exchange, the refrigerant in the capillary tube is further cooled, the supercooling degree of the refrigerant is improved, and the refrigerating capacity of the evaporator is increased. In a conventional regenerative tube assembly of a refrigerator, a capillary tube is generally welded directly to the surface of a return tube, and the contact area between the return tube and the capillary tube is small, so that the heat exchange efficiency is low.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a refrigerator return air pipe subassembly to area of contact between increase return air pipe and the capillary, thereby improve heat exchange efficiency.

In order to achieve the above purpose, the present invention is implemented by the following technical solutions:

a refrigerator muffler assembly comprises a muffler and at least one capillary tube, wherein the wall of the muffler is inwards recessed to form a U-shaped mounting groove, and the U-shaped mounting groove extends along the axial direction of the muffler;

the number of the U-shaped mounting grooves is the same as that of the capillaries, and the capillaries are embedded into the U-shaped mounting grooves in a one-to-one correspondence manner;

the outer wall of the capillary tube, which faces the opening side of the U-shaped mounting groove, is provided with an arc surface, and the arc surface and the outer wall of the air return pipe are on the same cylindrical surface.

Preferably, the outer wall of the capillary tube is formed with a contact surface which is in contact with the muffler, and the shape of the contact surface is matched with the groove wall of the U-shaped mounting groove.

Preferably, a heat-conducting silicone grease layer is arranged between the outer wall of the capillary tube and the wall of the U-shaped mounting groove.

Preferably, the refrigerator muffler assembly further comprises a protective sleeve, and the protective sleeve completely and tightly covers the muffler and the capillary tube.

Preferably, the protective sleeve is a heat shrink sleeve.

Preferably, the muffler is an aluminum tube, and the capillary tube is a copper tube.

The utility model has the advantages that:

the utility model provides a refrigerator return air pipe assembly, through forming U type mounting groove on the muffler, imbed the capillary in U type mounting groove, effectively increased the area of contact between muffler and the capillary to the heat exchange efficiency of return air pipe assembly has been improved; the capillary tube is embedded in the U-shaped groove of the air return pipe, welding is not needed, production and maintenance are more convenient, and the capillary tube can be matched with various refrigerating machines of a refrigerating system through the number of the grooves, so that the application range of the air return pipe assembly is expanded, and meanwhile, the production cost can be effectively reduced; because the outer wall of capillary towards the opening one side of U type mounting groove is the arc surface on same face of cylinder with the outer wall of muffler, makes capillary and muffler equipment back like this, whole muffler subassembly wholly is cylindricly, is convenient for to the cladding of muffler subassembly.

Drawings

Fig. 1 is a schematic cross-sectional view of an air return pipe assembly according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a return air pipe assembly according to another embodiment of the present invention;

fig. 3 is a schematic perspective view of an air return pipe assembly according to an embodiment of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In this application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present application, it is to be understood that the terms "longitudinal," "lateral," "horizontal," "top," "bottom," "upper," "lower," "inner" and "outer" and the like are used in the orientation or positional relationship shown in the drawings, which are used for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in fig. 1-3, an embodiment of the present invention provides a refrigerator return air pipe assembly, which includes a return air pipe 1 and at least one capillary tube 2, wherein a pipe wall of the return air pipe 1 is recessed inwards to form a U-shaped mounting groove 11, and the U-shaped mounting groove 11 extends along an axial direction of the return air pipe 1; the number of the U-shaped mounting grooves 11 is the same as that of the capillary tubes 2, and the capillary tubes 2 are embedded into the U-shaped mounting grooves 11 in a one-to-one correspondence manner; the outer wall of the capillary tube 2 facing the opening side of the U-shaped mounting groove 11 is formed with an arc surface 21, and the arc surface 21 and the outer wall of the muffler 1 are on the same cylindrical surface.

In the embodiment, the U-shaped mounting groove 11 is formed on the air return pipe 1, and the capillary tube 2 is embedded in the U-shaped mounting groove 11, so that the contact area between the air return pipe 1 and the capillary tube 2 is effectively increased, and the heat exchange efficiency of the air return pipe assembly is improved; the capillary tubes 2 are embedded in the U-shaped grooves of the air return pipe 1, welding is not needed, production and maintenance are more convenient, and the number of the grooves is needed, so that the air return pipe assembly is adaptive to various refrigerating machines of a refrigerating system, the application range of the air return pipe assembly is expanded, and meanwhile, the production cost can be effectively reduced, as shown in fig. 1 and 3, the number of the U-shaped mounting grooves 11 and the number of the capillary tubes 2 are respectively one, as shown in fig. 2, the number of the U-shaped mounting grooves 11 and the number of the capillary tubes 2 are respectively two, and the two capillary tubes 2 are correspondingly mounted in the two U-shaped mounting grooves 11 one by one; because the outer wall of capillary 2 towards the opening one side of U type mounting groove 11 is the arc surface 21 on same face of cylinder with muffler 1's outer wall, makes capillary 2 and muffler 1 equipment back like this, and whole muffler subassembly is whole to be cylindricly, is convenient for to the cladding of muffler subassembly.

In one embodiment, as shown in fig. 1, the outer wall of the capillary tube 2 is formed with a contact surface 22 for keeping contact with the muffler 1, and the shape of the contact surface 22 is adapted to the groove wall of the U-shaped mounting groove 11. Thus, the contact surface 22 on the capillary tube 2 is in surface contact with the groove wall of the U-shaped mounting groove 11 of the muffler 1, and the shape of the contact surface 22 is matched with the groove wall of the U-shaped mounting groove 11, so that the contact area between the muffler 1 and the capillary tube 2 is effectively increased, and the heat exchange efficiency between the muffler 1 and the capillary tube 2 is improved.

In one embodiment, as shown in FIG. 2, a heat conductive silicone layer 3 is disposed between the outer wall of the capillary 2 and the wall of the U-shaped mounting groove 11. Like this, heat conduction silicone grease can be in the same place capillary 2 and muffler 1 links closely, not only can fix capillary 2 in muffler 1's U type mounting groove 11 well, and heat conduction silicone grease can effectively fill the gap between the cell wall of capillary 2's outer wall and U type mounting groove 11 moreover, reduces the thermal resistance, further improves the heat exchange efficiency between muffler 1 and capillary 2.

In one embodiment, as shown in fig. 2 and 3, the air return pipe assembly of the refrigerator further comprises a protective sleeve 4, and the protective sleeve 4 completely and tightly covers the air return pipe 1 and the capillary tube 2. Through setting up protective sheath 4, not only can play the guard action to muffler 1 and capillary 2 for muffler 1 and capillary 2 are difficult to damaged, can be with the inseparable cladding of muffler 1 and capillary 2 moreover, make muffler 1 and capillary 2 contact inseparabler, so that carry out the heat transfer better, can also fix capillary 2 in muffler 1's U type inslot well, play the effect of fixed capillary 2.

In one embodiment, the protective sleeve 4 is a heat shrink. The heat-shrinkable sleeve is convenient to disassemble and assemble, the capillary tube 2 and the air return tube 1 can be fixed together by simple heating, and the production cost is effectively reduced. When the device is installed, the heat-shrinkable tube is sleeved outside the air return tube 1 and the capillary tube 2, and then the heat-shrinkable tube is heated to shrink, so that the air return tube 1 and the capillary tube 2 can be tightly coated; when the capillary tube 2 or the air return pipe 1 needs to be replaced, the heat-shrinkable sleeve is heated to be softened, and then the heat-shrinkable sleeve is cut and peeled by a cutter or scissors.

In one embodiment, the muffler 1 is an aluminum tube and the capillary tube 2 is a copper tube. Because the capillary tube 2 is a copper tube and the muffler 1 is an aluminum tube, compared with the prior art that the muffler 1 also uses a copper tube, the cost is reduced.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The air return pipe assembly of the refrigerator is characterized by comprising an air return pipe and at least one capillary pipe, wherein the pipe wall of the air return pipe is inwards sunken to form a U-shaped mounting groove, and the U-shaped mounting groove extends along the axial direction of the air return pipe;

2. The refrigerator return air pipe assembly according to claim 1, wherein the outer wall of the capillary tube is formed with a contact surface which is in contact with the return air pipe, and the shape of the contact surface is matched with the groove wall of the U-shaped mounting groove.

3. The refrigerator return air pipe assembly according to claim 1, wherein a heat conductive silicone layer is disposed between an outer wall of the capillary tube and a wall of the U-shaped mounting groove.

4. The refrigerator return air pipe assembly according to any one of claims 1 to 3, further comprising a protective sheath that completely and tightly covers the return air pipe and the capillary tube.

5. The chiller return air duct assembly of claim 4, wherein the protective sleeve is a heat shrink.

6. The chiller return air tube assembly of claim 5, wherein the return air tube is an aluminum tube and the capillary tube is a copper tube.