WO2014048214A1

WO2014048214A1 - Refrigerator

Info

Publication number: WO2014048214A1
Application number: PCT/CN2013/082567
Authority: WO
Inventors: 马坚; 肖长亮; 刘越; 谢玉刚; 吴有志
Original assignee: 海尔集团公司; 青岛海尔特种电冰柜有限公司
Priority date: 2012-09-26
Filing date: 2013-08-29
Publication date: 2014-04-03
Also published as: CN103673468B; CN103673468A

Abstract

A refrigerator comprises a frost resisting apparatus (1) used for communicating the interior with the exterior of the refrigerator. The frost resisting apparatus (1) comprises a dehumidification tube (10), and a dehumidification agent is filled in the dehumidification tube (10). The refrigerator is further provided with a water-proof gas-permeable membrane, the water-proof gas-permeable membrane being close to an inner side of a refrigerator body. An external opening is disposed on a back of a refrigerator case (3) of the refrigerator, and an internal opening is disposed on a refrigerator opening (2) of the refrigerator. One of the dehumidification tube (10) is connected to the external opening, and the other end is connected to the internal opening. A refrigerator case connector (30) with an air hole is disposed on the external opening, and a refrigerator opening connector (20) with an air hole is disposed in the internal opening. The dehumidification tube (10) is connected to the refrigerator opening connector (20) through a soft pipe (40). The refrigerator can effectively reduce frosting quantity in the refrigerator body, extend the defrosting cycle for a user, and reduce energy consumption.

Description

Cold rejection

The invention relates to a cold rejection, in particular to a frost-resistant device of a refrigerator. Background technique

The direct-cooling freezer product is cooled by a entangled evaporator or a tube-and-tube evaporator, and is usually frosted quickly on the inner wall of the evaporator or the tube-tube evaporator. The frost-forming vapor is from the stored food, but More is the water vapor leaking from the door seal. The temperature fluctuation in the tank caused by the compressor opening and stopping will continue to cause the gas in the tank to change continuously with respect to the outside air pressure, so that the door seal water vapor leaks continuously. The traditional venting opening on the door seal for easy door opening exacerbates the frosting process.

Currently, frost-free products in frozen products generally use air-cooled, time-controlled automatic cream. In the inner wall of the box and the shelf that the user can see, there is really no frost residue, but the actual such products are frosted faster, but only to the surface of the evaporator that the user cannot see, because the fan increases the gas inside the box. The flow makes the moisture of the gas in the box condense on the surface of the evaporator faster. Once it exceeds a certain time, the surface of the evaporator will accumulate more frost and water, resulting in lower heat exchange efficiency, poor cooling, and severe frost. The evaporator fin gap is completely blocked and will not be completely cooled, so the frost on the evaporator must be timed out.

It is usually timed to stop the natural temperature defrosting or electric heating defrosting. The former works for refrigerated products with a small amount of frosting, but for frozen products, it takes a long time to defrosting each time, so electric heating cream must be used. The electric heating defrosting can heat the evaporator faster and the frost melts, but the electric heating causes an increase in power consumption, and after the defrosting is finished, the excess heat is balanced, and an additional power consumption is required. For frost-free products, it is more difficult to achieve high levels of energy consumption.

And too much water accumulates frost, and the source of moisture is usually from food. Therefore, frost-free products are prone to food drying problems and need to increase moisturizing. There is currently no good solution to this problem. Therefore, for some products with high freshness requirements, it is generally recommended. Straight cold. However, there are many problems with frost and defrosting. For horizontal freezer cabinets, excessive frosting on the inner wall of the liner causes a decrease in heat exchange efficiency and an increase in power consumption. For vertical products, when the evaporator is severely frosted, the drawer or the door body is frozen, resulting in failure to operate normally. If the user manually defrosts, it is very inconvenient to disconnect the power and take out all the goods.

At present, in order to solve this problem, a new defrosting scheme uses an electromagnetic varnish to change the frozen refusal liner to iron, the evaporator is entangled normally, and the defrosting needs to be powered off, and the electromagnetic defrosting device is aimed at the inner tank. The electromagnetic heat effect generated causes the temperature of the inner liner to rise, so that the thick water frost layer melts rapidly from the attachment surface, thereby facilitating the falling off. The invention can quickly cure the frost.

A major problem with electromagnetic defrosting is the need to use electromagnetics, which require special attention in terms of safety. The inner tank uses iron, which has low heat transfer efficiency and consumes a lot of electricity. Moreover, the solution is only convenient for the defrosting process, can not reduce the number of defrosting, can not fully meet the needs of users, and the cost of this module is relatively high. Summary of the invention

In view of the above, it is an object of the present invention to provide a cold rejection which can fundamentally reduce the amount of frost.

To achieve the above object, the present invention provides a cold rejection, including a frost-resistant device for connecting the inside and outside of the refrigerator.

By setting the frost-resisting device on the cold rejection, the frosting amount in the refrigerator can be effectively reduced, and the frost-proof device can be replaced with the cold-rejecting inner and outer portions, thereby replacing the balanced vent hole provided on the door seal on the refrigerator to optimize the product structure.

Preferably, the frost-resistant device comprises a dehumidification tube.

Preferably, the dehumidification tube is filled with a dehumidifying agent.

By filling the desiccant tube with a desiccant, the air entering the freezer can be effectively dried, thereby reducing the amount of frost.

Preferably, in the dehumidifying tube, a waterproof gas permeable membrane is disposed, and the waterproof gas permeable membrane is disposed adjacent to the inner side of the rejecting body.

The waterproof gas permeable membrane is disposed in the dehumidification tube at a position close to the inner side of the reject body, and can be effective The air with moisture is prevented from entering the cabinet, and the moisture in the dehumidifying agent in the dehumidifying tube is brought to the outside by the drying gas from the body, so that the service life of the desiccant can be prolonged.

Preferably, the cold-returning cabinet is provided with an external opening, and the cold-removing cabinet opening is provided with an internal opening, one end of the dehumidifying tube communicates with the external opening, and the other end communicates with the internal opening .

Preferably, the outer opening is provided on the back side of the rejector of the refrigerator. The external opening is arranged on the back of the freezer body, which is invisible from the user's angle, so that the setting is more reasonable, and the internal opening is arranged on the cabinet mouth. Because of the proximity to the door body, the balance effect on the air pressure can be affected quickly. The door body makes it easier to open the door.

Preferably, in the present invention, a detachment connector having a vent hole is provided on the outer opening, and a venting connector having a vent is provided in the inner opening.

Preferably, in the present invention, a grid is provided on the air hole.

Providing a grille on the air hole prevents foreign matter from entering and blocking the nozzle and affecting the effect. Preferably, in the present invention, a flange is provided at the inner nozzle of the cabinet port connector. Setting the flange prevents the ice from the outside of the air vent from flowing into the pipe.

Preferably, in the present invention, the dehumidification tube and the refusal connection are connected by a hose. By replacing hoses of different lengths, it is possible to correspond to different types of cold rejections with different wall thicknesses.

According to the refrigerator of the present invention, by providing a frost-proof device having a dehumidification tube on the body, the amount of frost in the body can be effectively reduced, the defrosting cycle of the user can be prolonged, and the energy consumption in the cold rejection can be reduced. DRAWINGS

Figure 1 is a schematic view showing the explosion structure of the frost-resistant device;

Figure 2 is a schematic view showing the explosion structure of the dehumidification pipe;

Figure 3 is a cross-sectional view showing the assembled structure of the dehumidification pipe;

Figure 4 is a schematic view showing the explosion structure of the cabinet connector; Figure 5 is a schematic view showing the assembly structure of the cabinet connector;

Figure 6 is a schematic view showing the structure of the cabinet connecting member;

Figure 7 is a schematic view showing the mounting structure of the frost-resistant device;

Figure 8 is a schematic view showing a mounting position of the frost-resistant device on the body;

Fig. 9 is a view showing the mounting position of the frost-resistant device on the repellency.

[Marking instructions in the figure]

1 frost-resistant device; 2 cabinet mouth; 3 cabinet shell; 10 dehumidification tube; 11 tube body; 111 main body; 112 protrusion; 113 externally threaded tube; 12 dehumidification filter; 121 dehumidification net body (preferably waterproof and breathable film attached Here); 122 fixed ring; 13 filter; 14 tube cover; 141 cylindrical cover; 141 1 locking hole; 142 cylindrical connection; 20 cabinet connection; 21 refusal mounting; 211 cover; 2111 vent; 212 tubular; 2121 protrusion; 22 connecting shell; 221 cylindrical housing; 221 1 locking hole; 222 externally threaded tube; 30 cabinet connector; 31 cap; 311 vent; 32 cylinder Body; 40 hoses. detailed description

1 to 9 show a cold rejection, the refrigerator has a frost-resistant device 1, and the frost-resistant device 1 comprises: a dehumidification pipe 10, a cabinet connection member 20, a shell-removing connector 30, and A hose 40 is connected between the reject connector 20 and the reject connector 30.

The dehumidification tube 10 is located in the foam layer, and includes a tube body 11, a dehumidification filter screen 12, a filter screen 13, and a tube cover 14. The tube body 11 is a long tube shape penetrating in the axial direction, and includes a main body 111 having a larger diameter and An externally threaded tube 113 having a diameter smaller than that of the main body 1 11 extending in the axial direction and continuously provided at one end of the main body 111 is provided in the circumferential direction of the outer tube wall near the nozzle at the other end of the main body 111 There is a pair of protrusions 112.

The dehumidification filter screen 12 is disposed inside the main body near the outer threaded pipe 113 side of the main body 11 1 , and includes: a fixing ring 122 and a dehumidification net main body 121 . The dehumidifying net main body 121 has a stepped cylindrical shape, and the larger diameter side end surface is open, and the smaller diameter side end surface is in the form of a mesh having an array hole, and the fixing ring 122 is sleeved on the outer peripheral surface of the smaller diameter side of the dehumidifying net main body 121. on, A waterproof gas permeable membrane is provided on the end surface of the mesh, and is fixed to the dehumidification net main body 121 by a fixing ring 122.

The screen 13 has a cylindrical shape and is disposed inside the tubular body 11 on the side opposite to the externally threaded tube 113 of the tubular body 11, and has one end surface open and the other end surface in the form of a mesh having an array of holes.

A dehumidifying agent is filled between the dehumidifying filter 12 and the screen 13 in the pipe body 11.

The tube cover 14 is composed of a cylindrical portion 141 having a larger diameter and a cylindrical connecting portion 142 having a smaller diameter which is continuously provided in the vertical direction of the cylindrical lid portion 141. The cylindrical lid portion 141 is formed. The cylindrical connecting portion 142 is communicated with the inside, and a pair of locking holes 1411 corresponding to the protrusions 112 on the main body 11 1 are provided on the circumferential surface of the cylindrical cover portion 141, and the locking holes 1411 and the main tube are provided through the locking holes 1411. The locking engagement of the projections 112 of the body 111 causes the tube cover 14 to be mounted and fixed to the main body 111.

The shell-removing connector 30 is mounted on the back side of the reject shell 3 of the refrigerator, has a substantially cylindrical shape and penetrates in the axial direction, and has a cap-shaped body 31 having a large diameter at one end, and the other end is continuous with the cap-shaped body 31. An elliptical cylindrical body 32 having a small diameter is disposed, and the cylindrical body 32 is sleeved inside the cylindrical connecting portion 142 of the tube cover 14, so that the cabinet connecting member 30 is in the axial direction and the dehumidifying tube The 10-phase vertical mounting is fixed to the tube cover 14. The communicating pores 311 on the outer surface of the cap 31 have a cross-shaped grid shape. Further, a snap ring is provided on the inner side surface of the cap body 31 at the outer side of the circumference of the cylindrical body 32, and the knockout connecting member 30 can be fixedly attached to the reject case 3 by the snap ring.

The refusal connector 20 includes a refusal mounting portion 21 and a connection housing 22, and the refusal mounting portion 21 is formed by an elliptical larger diameter cover portion 211 at one end and an elliptical continuation with the cover portion 211 at the other end. The circular tubular portion 212 is configured to have a cross-shaped grid-shaped air hole 2111 at a substantially intermediate position of the lid portion 211. The end surface of the tubular portion 212 opposite to the lid portion 211 is at an angle to the end surface of the lid portion 211. It is inclined, and the inclination angle corresponds to the inclination angle of the repulsion opening 2. A protrusion 2121 is provided on the circumferential outer surface of the opposite surface of the cylindrical portion 212. The connecting housing 22 is provided with a cylindrical casing 221 that is sleeved with the tubular portion 212 of the refusal mounting portion 21, and a locking hole 2211 is provided on the circumferential surface of the cylindrical casing 221, through which the card is passed The cooperation of the hole 2211 with the protrusion 2121 on the cabinet mounting portion 21 makes the cabinet mouth The mounting portion 21 is mounted and fixed to the connection housing 22. In addition, the connecting housing 22 is provided with an outwardly extending externally threaded tube 222 perpendicular to the upper and lower surfaces of the cylindrical housing 221, and the externally threaded tube 222 is continuously disposed with the cylindrical housing 221, The flange of the externally threaded tube 222 in the cylindrical housing 221 is provided with a flange for preventing water from being brought into the conduit by the external inlet of the air hole 21 11 . An end surface of the cylindrical casing 221 that is sleeved with the tubular portion 212 of the cabinet mounting portion 21 has an inclined shape that matches the inclined end surface of the tubular portion 212.

One end of the hose 40 is attached to the externally threaded tube 113 of the desiccant tube 10, and the other end is connected to the externally threaded tube 222 of the reject connector 20.

In the present embodiment, the frost-resistant device 1 is substituted for the vent hole on the door seal, and in the case where the temperature (pressure) fluctuates due to the opening and closing of the compressor in the cold-rejected interior, in the process of performing internal and external gas exchange, The outside of the cabinet enters the gas that is rejected, is dried by the dehumidifying agent, and is blocked by the waterproof gas permeable membrane, so that the gas entering the refusal has a small amount of moisture, and when the gas flows out from the inside of the cabinet to the outside of the cabinet, The moisture in the desiccant is carried away by the dry air from the reject, and the service life of the desiccant can be prolonged.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are included in the spirit and scope of the present invention, should be included in the present invention. Within the scope of protection.

For example, in the present embodiment, the moisture-removing treatment of the air is performed by filling the dehumidifying tube with the dehumidifying agent and providing the waterproof gas permeable membrane. However, the present invention is not limited thereto, and the waterproof gas permeable membrane may be omitted or may be passed through the dehumidifying tube. The tortuous path is set in the middle and the desiccant is omitted. In addition, the opening of the cabinet of the frost-resistant device can also be arranged on the inner casing, and the dehumidification pipe can also be mounted on the cabinet or on the inner casing.

For example, in the present embodiment, a spring device may be added to the dehumidifying tube to pressurize the dehumidifying agent, and the sealing and dehumidifying effects may be increased.

Alternatively, the frost-resistant device may be mounted on the door body.

Claims

Claim

A cold rejection characterized in that it comprises a frost-resistant device (1) for connecting the inside and outside of the cold rejection.

2. The cold rejection according to claim 1, wherein the frost-resistant device comprises a dehumidification tube (10).

The cold rejection according to claim 2, characterized in that the dehumidification tube (10) is filled with a dehumidifying agent.

The cold rejection according to claim 2 or 3, wherein the dehumidification tube (10) is provided with a waterproof gas permeable membrane, and the waterproof gas permeable membrane is disposed adjacent to the inner side of the reject body.

5. The cold rejection according to claim 2, wherein an outer opening is provided on the cold-rejecting shell (3), and an inner opening is provided in the cabinet opening (2) of the refrigerator. One end of the desiccant tube (10) communicates with the external opening, and the other end communicates with the internal opening.

6. The refrigerator according to claim 5, characterized in that the external opening is provided on the back side of the cabinet (3).

7. The cold rejection according to claim 5, wherein the outer opening is provided with a shell connection member (30) having a gas hole (311), and the inner opening is provided with a gas hole (2111) cabinet connection (20).

The refrigerator according to claim 7, characterized in that a grid is provided on the air holes (311, 2111).

9. The cold reject according to claim 7, wherein a flange is provided at an inner nozzle of the reject connector (20).

10. A freezer according to claim 7, characterized in that the dehumidification tube (10) and the cabinet connection (20) are connected by a hose (40).