CN116136348A

CN116136348A - refrigerator

Info

Publication number: CN116136348A
Application number: CN202111355812.4A
Authority: CN
Inventors: 赵振雨; 朱小兵; 张延庆; 宋向鹏; 张方友; 王昊
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2023-05-19
Also published as: EP4435356A1; EP4435356A4; WO2023088152A1; WO2023088152A8

Abstract

The invention provides a refrigerator, comprising: a case; the door body is pivotally connected to the box body through a hinge; the refrigeration system comprises a compressor, a condenser and a door body evaporator which are sequentially connected, wherein the compressor and the condenser are arranged on one side of the box body, and the door body evaporator is arranged on one side of the door body; the condenser is connected with the door evaporator through an air inlet pipe, and the door evaporator is connected with the compressor through an air return pipe; the box body is provided with a pipeline opening, and the air return pipe penetrates into the heat insulation layer of the box body through the pipeline opening after penetrating out from the hinge shaft at one side of the door body; the air return pipe comprises an air return hose which extends from at least one hinge shaft at one side of the door body to one side of the box body, and a heating wire is buried in the pipe wall of the air return hose between at least one hinge shaft at one side of the door body and the pipeline opening. According to the refrigerator, the heating wire is arranged in the air return hose between the refrigerator body and the door body, so that condensation of the air return hose is avoided.

Description

Refrigerator with a refrigerator body

Technical Field

The invention relates to the field of household appliances, in particular to a refrigerator.

Background

In order to meet the demands of users for ice, an ice making compartment is arranged on a refrigeration door body of a part of the refrigerator, an ice making device and an independent ice making evaporator for supplying cool air to the ice making compartment are arranged in the ice making compartment, a compressor and a condenser are often arranged in a press bin on one side of the refrigerator body, the ice making evaporator and the compressor are connected through an air return pipe, and the air return pipe penetrates out of a hinge shaft of the refrigeration door body and then enters into a heat insulation layer of the refrigerator body, but because the temperature of refrigerant in the air return pipe is lower, and the air return pipe between the refrigeration door body and the refrigerator body is exposed to the outside, condensation can be generated.

In the prior art, a foam heat-insulating pipe is sleeved outside the air return pipe to prevent the air return pipe from condensation, but the foam heat-insulating pipe has larger volume, is inconvenient to penetrate into the hinge shaft, occupies large space, affects the attractiveness and is easy to damage.

Disclosure of Invention

In order to solve the problems, the invention provides a refrigerator which can prevent the condensate from occurring in an air return pipe between a refrigerator body and a door body.

In order to achieve one of the above objects, an embodiment of the present invention provides a refrigerator including:

a case;

the door body is pivotally connected to the box body through a hinge;

the refrigeration system comprises a compressor, a condenser and a door body evaporator which are sequentially connected, wherein the compressor and the condenser are arranged on the side of the box body, and the door body evaporator is arranged in the door body; the condenser is connected with the door evaporator through an air inlet pipe, and the door evaporator is connected with the compressor through an air return pipe;

the box body is provided with a pipeline opening, and the air return pipe penetrates into the heat insulation layer of the box body through the pipeline opening after penetrating out from the hinge shaft at one side of the door body;

the air return pipe comprises an air return hose which extends from at least one hinge shaft at one side of the door body to one side of the box body, and a heating wire is buried in the pipe wall of the air return hose between at least one hinge shaft at one side of the door body and the pipeline opening.

As a further improvement of an embodiment of the present invention, the heating wire includes a plurality of resistance wires spaced along a circumferential side of the muffler.

As a further improvement of one embodiment of the present invention, a heating wire equal in length to the air return hose is embedded in the wall of the air return hose.

As a further improvement of an embodiment of the present invention, the refrigeration system further includes a door capillary tube, and the door capillary tube is disposed on the door side and between the condenser and the door evaporator.

As a further improvement of an embodiment of the invention, the box body comprises a shell and a liner, wherein the heat insulation layer is positioned between the shell and the liner, and the liner forms a storage compartment.

As a further improvement of an embodiment of the present invention, the box side is provided with a press bin for installing the compressor, the air return pipe comprises an air return hose and an air return copper pipe, and the air return hose penetrates through the hinge shaft of the door side from the pipeline opening into the box heat insulation layer and enters the press bin through the box heat insulation layer to be connected with the air return copper pipe.

As a further improvement of an embodiment of the present invention, the air inlet pipe includes an air inlet hose and an air inlet copper pipe, and the air inlet hose is connected with the air inlet copper pipe by passing through the hinge shaft on the door body side, the air inlet hose passes through the pipe opening, enters the box heat insulation layer, and passes through the box heat insulation layer, and enters the press cabin.

In order to achieve one of the above objects, an embodiment of the present invention provides a refrigerator, wherein a compressor compartment for installing the compressor is provided at a side of the refrigerator, the return air pipe includes a return air hose and a return air copper pipe, the return air copper pipe passes through the heat insulation layer of the refrigerator from the compressor compartment to pass through the heat insulation layer of the refrigerator, and the return air hose passes through the hinge shaft to extend to the side of the refrigerator to be connected with the return air copper pipe.

As a further improvement of an embodiment of the invention, the air inlet pipe comprises an air inlet hose and an air inlet copper pipe, the air inlet copper pipe penetrates through the heat insulation layer of the box body from the press bin and penetrates out of the pipeline opening, the air inlet copper pipe penetrates out of the side of the extending box body from the hinge shaft at one side of the door body and is connected with the air inlet copper pipe, the box body is provided with a pipeline accommodating groove and a cover plate for sealing the pipeline accommodating groove, the pipeline opening is arranged in the pipeline accommodating groove, and the interface between the air inlet hose and the air inlet copper pipe and the interface between the air return hose and the air return copper pipe are arranged in the pipeline accommodating groove.

As a further improvement of an embodiment of the present invention, the storage compartment formed in the case includes a refrigerating compartment and a freezing compartment, an ice making compartment is provided on a refrigerating door for opening and closing the refrigerating compartment, and the door evaporator is provided in the ice making compartment.

According to the refrigerator provided by the invention, the heating wire is directly embedded in the pipe wall of the return air hose between the door body and the refrigerator body, so that the problem of condensation of the exposed return air hose between the door body and the refrigerator body can be solved. The heater strip is directly buried in the pipe wall of return air hose, and overall structure is compact, and occupation space is little, and easy to assemble makes, and the heater strip is not directly exposed in the outside, and the pipe wall of return air hose can protect the heater strip, and the security is high, and the toughness of return air hose can be increased to the heater strip toughness good, can not harm the life-span of return air hose.

Drawings

Fig. 1 is a perspective view of a refrigerator according to an embodiment of the present invention;

fig. 2 is an exploded view of the refrigerator shown in fig. 1;

FIG. 3 is a schematic view of a refrigeration system of the refrigerator shown in FIG. 1;

fig. 4 is an exploded view of a refrigerator according to another embodiment of the present invention;

FIG. 5 is a cross-sectional view of a return air hose according to yet another embodiment of the present invention;

FIG. 6 is a partial schematic view of a further embodiment of the present invention;

fig. 7 is a schematic cross-sectional view of the intake hose and return air hose shown in fig. 6.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

Referring to fig. 1 and 2, in order to provide a refrigerator 100 according to an embodiment of the present invention, the refrigerator 100 includes a case 110 and a door 120 for opening and closing the case 110, the door 120 is pivotally connected to the case 110 through a hinge 130, the hinge 130 has a hinge plate fixedly connected to the case 110 and a hinge shaft 132 pivotally connected to the door 120, a door shaft is provided on the case 110, and the hinge shaft 132 is connected to the door shaft so that the door can rotate relative to the case. The case 110 and the door 120 may be provided with a heat insulating layer to prevent the cool air in the refrigerator 100 from being lost. Specifically, the case 110 may include a housing and an inner container, a heat insulation layer is disposed between the housing and the inner container, the door 120 may include a door shell and a door liner, and a heat insulation layer is disposed between the door shell and the door liner, and the heat insulation layer may be a foaming material. The inner container of the case 110 forms a storage compartment, which may include a refrigerating compartment and a freezing compartment.

The door body 120 of the refrigerating compartment may be provided with an ice making compartment and an ice making small door for opening and closing the ice making compartment, and the ice making small door is filled with a heat insulating material to isolate the ice making compartment from the refrigerating compartment, and an ice making device and an ice storage device may be installed in the ice making compartment.

The refrigerator 100 further includes a refrigeration system 200, referring to fig. 2 and 3, the refrigeration system 200 may include a compressor 230, a condenser 240, a door capillary 250, and a door evaporator 260, which are sequentially connected. The compressor 230 and the condenser 240 may be installed at one side of the case 110, for example, one side of the case 110 may be provided with a press bin, the press bin may be disposed at the bottom of the case 110, and the compressor 230 and the condenser 240 may be installed in the press bin.

In the present embodiment, the door evaporator 260 may be installed in the door 120, and in particular, the door evaporator 260 may be installed inside the ice making compartment for supplying cool air to the ice making compartment. The case 110 is further provided at one side thereof with a case evaporator 280 and a case capillary 270, the case evaporator 280 may be used to supply cool air to the refrigerating and freezing compartments, and the case evaporator 280 and the door evaporator 260 may share the compressor 230 and the condenser 240. Specifically, the compressor 230 is connected to the condenser 240 through a refrigerant pipe, the condenser 240 is connected to a first in-second out solenoid valve 290 to supply refrigerant to the door evaporator 260 and the box evaporator 280, respectively, and the refrigerant flowing through the door evaporator 260 and the box evaporator 280 is returned to the compressor 230 of the press cabin.

In the present embodiment, the condenser 240 may be connected to the door evaporator 260 through the intake pipe 210, and the door evaporator 260 may be connected to the compressor 230 through the return pipe 220. The air inlet pipe 210 can penetrate through the heat insulation layer of the box body 110 from the press bin and then penetrate into the heat insulation layer of the door body 120 to be connected with the door body evaporator 260, one end of the air return pipe 220 is connected with the door body evaporator 260 and penetrates through the heat insulation layer of the door body 120 and then penetrates into the heat insulation layer of the box body 110, and finally penetrates into the press bin to be connected with the compressor 230.

In an embodiment of the present invention, the case 110 is provided with the pipe opening 111, the pipe opening 111 may be disposed at the top of the case 110, and the air return pipe 220 penetrates the door shaft of the door 120 from the inside of the heat insulation layer of the door 120, penetrates the hinge shaft 132 of the door 120, and penetrates the inside of the heat insulation layer of the case 110 from the pipe opening 111 of the case 110. The refrigerator 100 further includes a heat-insulating hinge cover plate 131, and the hinge cover plate 131 covers at least the exposed return air duct 220 disposed between the hinge shaft 132 and the duct opening 111. The hinge cover 131 may be directly installed on the case 110 by using a screw or other fastening means, and since the hinge cover 131 insulates heat and covers the portion of the muffler 220 exposed to the outside of the case 110 and the door 120, the muffler 220 does not directly contact with the outside, and thus, condensation does not occur on the outside of the muffler 220 at low temperature. The hinge cover plate 131 wraps the muffler 220, so that the whole device is attractive, compact in structure and convenient to install and manufacture.

In this embodiment, the hinge cover 131 includes a hinge housing and a thermal insulation foam fixed on the inner side of the hinge housing, and the thermal insulation foam can be fastened and fixed on the inner side of the hinge housing, and in the installation and manufacturing process, the hinge cover 131 can be directly installed after the refrigeration system 200 is installed, and the installation process is simple.

The box 110 may further be provided with a line guide box 140, and specifically, the line guide box 140 may be disposed at an edge of a top box opening side of the box 110, the line guide box 140 includes a line guide groove 141 disposed at a side close to the hinge 130, and the air inlet pipe 210 and the air return pipe 220 may penetrate into the line opening 111 after passing through the line guide groove 141. The hinge cover plate 131 covers the pipe guide groove 140 and abuts against the side wall of the pipe guide groove 141, and the pipe guide groove 141 can guide and position the pipe while limiting the hinge cover plate 131.

Further, a guide groove for receiving the muffler 220 may be further provided on the hinge cover 131. Specifically, the guiding groove can be arranged on the thermal insulation foam, when the hinge cover plate 131 is installed on the door body 120, the air return pipe 220 penetrates through the guiding groove of the hinge cover plate 131 after penetrating out of the hinge shaft 132 on one side of the door body 120, penetrates into the thermal insulation layer of the box body 110 from the pipeline opening 111 on the box body 110, and can position the air return pipe 220, so that the air return pipe 220 is tightly coated, and the anti-condensation effect is improved.

Further, in an embodiment of the present invention, the door capillary 250 may be disposed in the door 120, specifically, the door capillary 250 may be disposed in a heat insulation layer of the door 120, the condenser 240 is connected to the door capillary 250 through a first air inlet pipe, the door capillary 250 is connected to the door evaporator 260 through a second air inlet pipe, and the first air inlet pipe penetrates through a hinge shaft 132 on one side of the door 120 from the heat insulation layer of the box 110, penetrates through a door shaft of the door 120, and then enters the heat insulation layer of the door 120 to be connected to the door capillary 250. The door capillary 250 may also extend partially into the door shaft of the door 120, and the first air inlet connection may be connected to the door capillary 250 by the hinge shaft 132 on one side of the door 120 entering the door shaft. The gate capillary 250 forms a tube bundle with the return air duct 220 at least partially so that the heat exchanging effect can be ensured.

The portion of the first air inlet pipe between the door 120 and the case 110 is exposed outside the door 120 and the case 110, but since the door capillary 250 is disposed in the door 120, the refrigerant flowing through the first air inlet pipe is normal temperature refrigerant, and the first air inlet pipe does not generate condensation problem.

Further, the air inlet pipe 210 may penetrate through the hinge shaft 132 at one side of the door 120 into the door shaft of the door 120 after penetrating out of the pipe opening 111 on the box 110, and then penetrates into the heat insulation layer of the door 120, and the heat insulation hinge cover 131 may cover the air inlet pipe 210 disposed between the hinge shaft 132 and the pipe opening 111. In this way, even if the door capillary 250 is provided at one side of the cabinet 110, the air inlet pipe 210 does not generate a condensation problem.

The air return pipe 220 may include an air return hose 221 and an air return copper pipe 222 connected to the air return hose 221, the air inlet pipe 210 may include an air inlet hose 211 and an air inlet copper pipe 212, the air inlet hose 211 and the air return hose 221 extend from at least the hinge shaft 132 on one side of the door 120 to one side of the box 110, so that the door 120 is not obstructed, the toughness of the hose is high, the door 120 is not easy to damage due to rotation, and the air inlet copper pipe 212 and the air return copper pipe 222 can ensure a good heat exchange effect.

Specifically, the air inlet pipe 210 may include an air inlet copper pipe disposed at one side of the door 120 and an air inlet copper pipe 212 disposed at one side of the box 110, the air inlet copper pipe at one side of the door 120 may be buried in a heat insulating layer of the door 120, and two ends of the air inlet hose 211 may be connected to the air inlet copper pipe at one side of the door 120 and the air inlet copper pipe 212 at one side of the box 110, respectively. The air inlet hose 211 may penetrate into the door shaft of the door 120 from the hinge shaft at the door 120 side, be connected to the air inlet copper pipe at the door 120 side in the door shaft of the door 120, or directly extend into the heat insulation layer of the door 120, and be connected to the air inlet copper pipe at the door 120 side in the heat insulation layer of the door 120. The inlet copper tube 212 on one side of the housing 110 may be connected to the condenser 240 in the press bin, and the inlet copper tube on one side of the door 120 may be connected to the door capillary 250.

The return copper pipe 222 also includes a return copper pipe 222 disposed at one side of the case 110 and a return copper pipe disposed at one side of the door 120, the return copper pipe 222 at one side of the case 110 is connected to the refrigerant inlet of the compressor 230, the return copper pipe at one side of the door 120 is connected to the refrigerant outlet of the door evaporator 260, and both ends of the return hose 221 are respectively connected to the inlet copper pipe 212 at one side of the case 110 and the inlet copper pipe at one side of the door 120. The air return hose 221 may be inserted into the door shaft of the door body 120 from the hinge shaft at the door body 120 side, connected to the air return copper pipe at the door body 120 side in the door shaft, or the air return hose 221 may be inserted into the heat insulation layer of the door body 120 after inserted into the door shaft, and connected to the air return copper pipe at the door body 120 side in the heat insulation layer of the door body 120.

Further, in an embodiment of the present invention, the axis of the pipe opening 111 on the case 110 is parallel to the axis of the hinge shaft 132, and the hinge cover 131 covers the hinge shaft 132 and the pipe opening 111.

In this embodiment, the air return pipe 220 and the air inlet pipe 210 can simultaneously pass through the hinge shaft 132 of the door 120 and then pass through the inside of the case 110 from the pipe opening 111, the axis of the pipe opening 111 is parallel to the hinge shaft 132, and damage to the air return pipe 220 and the air inlet pipe 210 can be reduced during the rotation of the door 120.

The air inlet hose 211 and the air return hose 221 are respectively connected with the air inlet copper pipe 212 and the air return copper pipe 222 in the press bin after penetrating out of the hinge shaft 132 at one side of the door 120, penetrating into the heat insulation layer of the box body 110 from the pipeline opening 111 and penetrating into the press bin. The refrigerator 100 may be further provided with a water supply device, the water supply device may supply water to the ice making device in the ice making compartment, and a water pipe of the water supply device may also pass through the hinge shaft 132 at one side of the door 120 from the heat insulation layer of the door 120 and then enter the heat insulation layer of the box 110 through the pipe opening 111, and the water pipe, the air return hose 221 and the air intake hose 211 may form a tube bundle, so that the installation and the manufacture are convenient. And the interfaces of the air return hose 221 and the air return copper pipe 222 on one side of the box body 110 and the interfaces of the air inlet hose 211 and the air inlet copper pipe 212 are all arranged in the press bin, so that the hinge cover plate 131 directly covers the area between the hinge shaft 132 and the pipeline opening 111 on one side of the door body 120 without arranging an extra connecting space on the box body 110, and the anti-condensation of the air return pipe 220 can be realized, and the whole structure is compact.

Referring to fig. 4, in another embodiment of the present invention, a pipe receiving groove 112 and a heat insulating cover 113 closing the pipe receiving groove 112 are provided on a case 110, and a pipe port 111 may be provided in the pipe receiving groove 112. The air inlet copper pipe 212 and the air return copper pipe 222 penetrate into the heat insulation layer of the box body 110 from the press bin and are respectively connected with the air inlet hose 211 and the air return hose 221 after penetrating out from the pipeline opening 111 on the box body 110. The interface between the air inlet hose 211 and the air inlet copper pipe 212 and the interface between the air return hose 221 and the air return copper pipe 222 are all arranged in the pipeline accommodating groove 112.

In this embodiment, the top of the case 110 is concaved inwards to form the pipe receiving slot 112, the pipe opening 111 is disposed on the side wall of the pipe receiving slot 112, the heat insulation cover 113 and the hinge cover 131 are detachably disposed, the air return hose 221 penetrates into the hinge cover 131 from the hinge shaft 132 of the door 120, then penetrates out of the hinge cover 131 into the heat insulation cover 113, and the heat insulation cover 113 and the hinge cover 131 jointly cover the air return pipe 220 between the hinge shaft 132 and the pipe opening 111 on one side of the door 120. The heat insulation cover 113 is a part of the hinge cover 131, and the heat insulation cover 113 and the hinge cover 131 can be integrally formed, so that the installation and the manufacture are more convenient.

Therefore, the hose has a higher price than the copper pipe, so the length of the hose can be reduced, the production and manufacturing cost can be reduced, and the installation and the manufacturing are convenient.

Referring to fig. 5, in another embodiment of the present invention, a heating wire 223 is buried in a wall of the return air hose 221 between at least one hinge shaft 132 of the door 120 and the pipe opening 111 of the case 110. The return air hose 221 extends from at least the hinge shaft 132 at the door 120 side to the case 110 side to prevent the return air pipe 220 from obstructing the opening and closing of the door 120, and to extend the service life of the return air pipe 220.

The heating wire 223 may be connected to a wire harness penetrating into the inside of the door 120 or the cabinet 110 of the refrigerator 100 from an end surface of one end of the return air hose 221, and the control board of the refrigerator 100 may control the opening and closing of the heating wire 223, for example, the heating wire 223 may be opened only when the compressor 230 is operated to supply the refrigerant to the door evaporator 260.

The portion of the return air hose 221 disposed between the hinge shaft 132 at one side of the door 120 and the pipe port 111 of the case 110 is exposed to the external environment, and the refrigerant flowing through the return air hose 221 is a low-temperature refrigerant, so that condensation is easily generated at the outside of the return air hose 221. And through burying the heater strip 223 in the pipe wall of the return air hose 221 of this part, heater strip 223 and return air hose 221 integrated into one piece can solve the condensation problem of return air hose 221, simultaneously, heater strip 223 buries in the pipe wall of return air hose 221, whole occupation space is little, and during the installation, and convenient, the closing of return air hose 221 can play the guard action to heater strip 223, and the toughness of heater strip 223 is higher simultaneously, also can strengthen the toughness of return air hose 221, increases the life-span of return air hose 221.

Further, in an embodiment of the present invention, the heating wire 223 with the same length as the air return hose 221 is embedded in the wall of the air return hose 221, that is, the heating wire 223 is embedded in the wall of the whole air return hose 221, so that the manufacturing is more convenient, and the anti-condensation effect is better.

The heater strip 223 includes a plurality of resistance wires that set up along muffler 220 week side interval, and the toughness of resistance wire is better, and difficult fracture just can be better promote the toughness of return air hose 221. The plurality of resistance wires are arranged at intervals along the peripheral side of the air return pipe 220, and the intervals between any two adjacent resistance wires can be equal, so that the air return pipe 220 is heated more uniformly, and the anti-condensation effect is improved.

Referring to fig. 6 and 7, in the refrigerator 100 according to still another embodiment of the present invention, in the present embodiment, the compressor 230 and the condenser 240 of the refrigeration system 200 are installed in the press compartment at one side of the cabinet 110, and the door capillary 250 and the door evaporator 260 are installed in the door 120, so that the refrigerant flowing through the air inlet pipe 210 between the condenser 240 and the door capillary 250 is normal temperature refrigerant during the cooling process, and the air inlet pipe 210 does not have a condensation problem.

In the present embodiment, the air inlet pipe 210 and the air return pipe 220 are penetrated from the hinge shaft 132 at one side of the door 120 through the pipe opening 111 of the case 110 and into the heat insulation layer of the case 110. The air inlet duct 210 includes an air inlet hose 211 extending from at least the hinge shaft 132 of the door 120 side to the case 110 side, the air return duct 220 includes an air return hose 221 extending from at least the hinge shaft 132 of the door 120 side to the case 110 side, and the air return hose 221 between at least the hinge shaft 132 of the door 120 side and the duct opening 111 is disposed in the air inlet hose 211.

The refrigerant in the return air hose 221 between the hinge shaft 132 at one side of the door 120 and the pipe port 111 is a low temperature refrigerant, and if the return air hose 221 is directly exposed to the external environment, condensation may occur in the return air hose 221. The return air hose 221 is arranged inside the air inlet hose 211, so that the return air hose 221 can be prevented from being directly exposed in the external environment, the outside of the return air hose 221 is wrapped by the air inlet hose 211 and normal-temperature refrigerating fluid at the same time, the return air hose 221 cannot be exposed, the whole structure is compact, additional space cannot be occupied, and the opening and closing of the door 120 and the service life of a pipeline cannot be influenced due to the fact that the air inlet hose 211 and the return air hose 221 are mutually nested.

Further, the air return pipe 220 comprises an air return copper pipe 222 connected with the air return hose 221, the air inlet pipe 210 comprises an air inlet copper pipe 212 connected with the air inlet hose 211, and the air return hose 221 is integrally arranged inside the air inlet hose 211, so that the anti-condensation effect can be improved through connection and manufacture.

The air return hose 221 and the air intake hose 211 can be integrally formed, and the supporting rib 224 can be arranged between the air return hose 221 and the air intake hose 211, so that the air return pipe 220 is fixed relative to the air intake pipe 210, a pipeline between the air return pipe 220 and the air intake pipe 210 is fixed relative to each other, and the refrigerant from the compressor 230 can smoothly enter the door capillary 250 through a channel between the air intake pipe 210 and the air return pipe 220, so that the refrigerating effect cannot be influenced, and meanwhile, the supporting rib 224 can also enhance the stability of the integral structure and the strength of the pipeline, and is convenient to install and manufacture.

Further, in an embodiment of the present invention, the refrigerator 100 further includes a shunt connection member 300, and the shunt connection member 300 connects the air intake hose 211, the air intake copper pipe 212, the air return hose 221, and the air return copper pipe 222. The shunt connection 300 may include a shunt connection 300 disposed at one side of the case 110 and a shunt connection 300 disposed at one side of the door 120. During the cooling process, the refrigerant from the compressor 230 enters the air inlet hose 211 from the air inlet copper pipe 212 through the split connection 300, then enters the air inlet copper pipe on one side of the door 120 through the split connection 300, flows into the air return copper pipe on one side of the door 120 after flowing through the door capillary 250 and the door evaporator 260, then enters the air return hose 221 through the split connection 300 on one side of the door 120, enters the air return copper pipe 222 on one side of the box 110 after flowing through the split connection 300 on one side of the box 110, and returns into the compressor 230.

The shunt connection 300 includes a fluid chamber 310, an intake hose connection 320 and an muffler connection 330 that extend through the fluid chamber 310. The end of the air intake hose 211 is connected to the air intake hose connection portion 320, the air return hose 221 passes through the fluid chamber 310 from the air intake hose connection portion 320 side to be connected to the air return pipe connection portion 330, an air intake chamber communicating with the air intake hose 211 is formed between the air return hose 221 and the side wall of the fluid chamber 310, the shunt connection member 300 further includes an air intake copper pipe connection portion 330 penetrating through the fluid chamber 310, and the air intake copper pipe 212 is connected to the air intake copper pipe connection portion 340.

In this embodiment, the fluid chamber 310 is cylindrical, the inner diameter of the fluid chamber 310 is larger than the outer diameter of the air return tube 221, the end surfaces at both ends of the fluid chamber 310 are opened, an air inlet tube connecting portion 320 connected with the air inlet tube 211 and an air return tube connecting portion 330 connected with the air return tube 220 are respectively provided, and an air inlet copper tube connecting portion 340 for connecting with the air inlet copper tube 212 is formed at the upper opening of the side wall of the fluid chamber 310. The return copper pipe 222 may be directly connected to the return hose 221, or may be connected to the return hose 221 via the return pipe connection 330. Fig. 6 is a schematic diagram of a split-flow connector at one side of a tank, in which arrows represent the flow direction of a refrigerant, and during a refrigeration process, the refrigerant flows from an intake copper pipe 212 into an intake cavity between an air return hose 221 and a fluid cavity 310, and then directly flows between an intake hose 211 and the air return hose 221, and the refrigerant in the air return hose 221 can directly flow into an air return copper pipe 222 connected thereto.

The air return pipe connection portion 330 may include a connection sleeve 331 disposed at one side of the fluid chamber 310, the air return hose 221 is disposed in the connection sleeve 331 through the fluid chamber 310, the air return hose 221 is in interference fit with the connection sleeve 331, and the air return copper pipe 222 may be disposed in the air return hose 221 to be in interference fit with the air return hose 221. Specifically, the air return copper pipe 222 and the air return hose 221 can be both disposed in the connecting sleeve 331, and the air return copper pipe 222 is disposed in the air return hose 221, that is, the connecting sleeve 331, the air return hose 221, and the air return copper pipe 222 are sequentially disposed from outside to inside, and the connecting sleeve 331, the air return hose 221, and the air return copper pipe 222 are in interference fit with each other in a mechanical press fit manner.

The air intake hose connection part 320 includes a screw connection sleeve 321, one end of the screw connection sleeve 321 is engaged with the air intake hose 211, and the other end is screw-connected to the outer wall of the fluid chamber 310. In the present embodiment, the screw connection sleeve 321 may be engaged with the intake hose 211 or may be screwed. The end part of the air inlet hose 211 and the thread connecting sleeve 321 are both sleeved on the outer wall of the fluid cavity 310, external threads are arranged on the outer wall of the fluid cavity 310, internal threads are arranged on the thread connecting sleeve 321, and when the air inlet hose 211 is installed, the air inlet hose 211 can be connected to the split-flow connecting piece 300 through the thread connecting sleeve 321. The inlet copper tube connecting portion 340 may be an opening formed on a sidewall of the fluid chamber 310, and the inlet copper tube 212 may be directly adhered to the inlet copper tube connecting portion 340 by metal glue.

Further, in one embodiment of the present invention, the split connection 300 on the side of the housing 110 is placed in the press magazine on the side of the housing 110. In the present embodiment, the air intake hose 211 and the air return hose 221 are respectively inserted from the hinge shaft 132 at the door 120 side, then pass through the heat insulation layer of the box 110 through the pipe opening 111 on the box 110, and enter the press cabin at the box 110 side, and the air intake hose 211 and the air return hose 221 are connected with the air intake copper pipe 212 and the air return copper pipe 222 through the shunt connector 300 in the press cabin.

In this embodiment, only one refrigerant pipe needs to be inserted from the inside of the case 110 in the manufacturing process, the manufacturing is simple, and the muffler 220 is placed in the air inlet pipe 210 to directly penetrate into the foaming layer from the pipe opening 111 on the case 110, so that the muffler 220 does not have any exposed part on the outside, and no condensation phenomenon occurs, and no additional structure is required.

In another embodiment of the present invention, the box 110 is provided with a pipe receiving slot 112 and a heat insulation cover 113 for closing the pipe receiving slot 112, the shunt connector 300 is disposed in the pipe receiving slot 112, the air inlet copper pipe 212 and the air return copper pipe 222 are connected with the shunt connector 300 from the press bin through the heat insulation layer of the box 110 from the pipe opening 111 and into the pipe receiving slot 112, and the air return hose 221 and the air inlet hose 211 are connected with the shunt connector 300 from the hinge shaft 132 at one side of the door 120 to one side of the box 110.

In the present embodiment, the lengths of the return air hose 221 and the intake air hose 211 are reduced, so that the cost can be reduced, but condensation may occur at the shunt connection member 300, and therefore, the shunt connection member 300 is prevented from occurring at the shunt connection member 300 by providing the pipe receiving groove 112 on the case 110 and sealing the pipe receiving groove 112 with the heat insulating cover 113.

It should be understood that although the present disclosure describes embodiments in terms of examples, not every embodiment is provided with a single embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present invention, and is not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.

Claims

1. A refrigerator, comprising:

box;

a door body, the door body is pivotally connected to the box body through a hinge;

Refrigeration system, which includes a compressor, a condenser, and a door evaporator connected in sequence, the compressor and the condenser are arranged on one side of the box, and the door evaporator is arranged on one side of the door side; the condenser is connected to the door body evaporator through an air intake pipe, and the door body evaporator is connected to the compressor through a return air pipe;

It is characterized in that a pipe opening is provided on the box body, and the air return pipe penetrates into the heat insulation layer of the box body through the pipe opening after passing through the hinge shaft on one side of the door body;

The air return pipe includes at least an air return hose extending from the hinge shaft on one side of the door body to one side of the box body, at least the air return hose between the hinge shaft on one side of the door body and the pipe opening A heating wire is embedded in the tube wall.

2 . The refrigerator according to claim 1 , wherein the heating wire comprises a plurality of resistance wires arranged at intervals along the circumference of the air return pipe. 3 .

3 . The refrigerator according to claim 1 , wherein a heating wire with the same length as the return air hose is embedded in the pipe wall of the air return hose. 4 .

4. The refrigerator according to claim 1, wherein the refrigeration system further comprises a door capillary, the door capillary is arranged on one side of the door, and is located between the condenser and the door between the evaporators.

5. The refrigerator according to claim 1, wherein the box body comprises an outer shell and an inner container, the heat insulation layer is located between the outer shell and the inner container, and the inner container forms a storage compartment.

6. The refrigerator according to claim 1, wherein a compressor compartment for installing the compressor is arranged on the side of the box, the air return pipe includes an air return hose and an air return copper pipe, the The air return hose passes through the hinge shaft on the side of the door body, passes through the pipe opening, passes through the heat insulation layer of the box body, enters the press chamber, and is connected with the air return copper pipe.

7. The refrigerator according to claim 6, wherein the air intake pipe includes an air intake hose and an air intake copper pipe, and the air intake hose passes through the hinge shaft on the side of the door body through the The pipe mouth passes through the heat insulation layer of the box body and enters the press chamber to be connected with the intake copper pipe.

8. The refrigerator according to claim 1, wherein a compressor compartment for installing the compressor is arranged on the side of the box, the air return pipe includes an air return hose and an air return copper pipe, and the The return air copper pipe passes through the heat insulation layer of the box from the press chamber and passes through the pipe opening, and the return air hose passes through the hinge shaft and extends to the side of the box to connect with the return air. Copper pipe connections.

9. The refrigerator according to claim 8, wherein the air intake pipe comprises an air intake hose and an air intake copper pipe, and the air intake copper pipe passes through the compartment of the box body from the press chamber. The heat layer passes through the pipe opening, and the air intake copper pipe passes through the hinge shaft on one side of the door body to extend the side of the box body to connect with the air intake copper pipe, and the box body is provided with a pipeline The accommodating tank and the heat insulation cover that closes the pipeline accommodating tank, the pipeline opening is arranged in the pipeline accommodating tank, the interface between the air inlet hose and the air inlet copper pipe and the air return soft The interface between the pipe and the return gas copper pipe is placed in the pipeline accommodation groove.

10. The refrigerator according to claim 1, wherein the storage compartment formed in the box includes a refrigerating compartment and a freezing compartment, and the refrigerating door for opening and closing the refrigerating compartment is provided with a In the ice-making compartment, the door evaporator is arranged in the ice-making compartment.