CN201159568Y - Improved air channel structure of variable temperature room for refrigerator - Google Patents

Abstract

The utility model belongs to the refrigeration technical field and relates to a duct structure for the temperature changing chamber of a refrigerator; the duct structure comprises a duct frozen chamber inlet, an internal duct and a duct refrigerating chamber outlet; the duct structure is arranged at the lower part of the frozen chamber and the refrigerating chamber; the duct frozen chamber inlet is connected into a frozen drawer of the frozen chamber; the duct refrigerating chamber outlet is connected into the temperature changing chamber of the refrigerating chamber; the internal duct is connected with the inlet and the outlet; the duct is a slantingly arranged U-shaped duct structure. The utility model adopts a simple duct structure, which achieves the refrigeration of the temperature changing area of the refrigerating chamber and solves the problems of local frost or condensates in the frozen chamber.

Description

Improved air channel structure of variable temperature room for refrigerator

technical field

The utility model belongs to the technical field of refrigeration, and relates to a refrigerator, in particular to an air passage structure of a variable temperature chamber for a refrigerator.

Background technique

The use of variable temperature chambers on refrigerators can meet the storage needs of different foods, and realize the preservation and nutrition maintenance of different foods. At present, the method of realizing variable greenhouse on SBS (SIDE BY SIDE refrigerator or side-by-side refrigerator) is mainly to increase the independent section, and use the stepping motor to drive the time of the damper to control the temperature in this section. The main disadvantages of this scheme are: 1. , the cost of materials increased; 2, the use of electrical components increased, the failure rate of the refrigerator increased accordingly, and the energy consumption of the refrigerator also increased accordingly.

As shown in Figure 1, the existing refrigerator with variable room includes a freezer compartment 11, a freezer fan 12, a freezer drawer 13, an air duct EPS (expandable polystyrene or PS foam) 14, an electric damper/direct-connected Manual slide bar 15, refrigerated variable room 16, refrigerated variable room cover plate 17, refrigerator refrigerated room 18, refrigerated return air outlet 19.

When the fan inside the freezer compartment 11 was started, the cold air would enter the refrigerated variable room 16 from the passage of the air duct EPS14 because the electric damper 15 was opened, and the refrigerated variable room 16 reached the temperature difference with the refrigerator refrigerated room 18 through its cover plate 17, and at the same time , the cold air returns to the freezer through the refrigerator return air outlet 19, thereby completing the cooling of the variable room.

Because the freezer compartment 11 of the refrigerator is directly communicated with the refrigerating compartment 18 in a short distance, on the one hand, the lower drawer 13 of the refrigerating compartment is poorly insulated and the temperature is too high, which is not conducive to food preservation; , causing the hot and humid air in the refrigerator to return directly to the lower drawer 13 area of the freezer through the air duct EPS 14, causing frost to form there, and problems such as freezing of the drawer 13 under long-term work.

Utility model content

The purpose of this utility model is to provide an improved air channel structure of the variable temperature room of the refrigerator, which utilizes the temperature difference between the freezing room and the refrigerating room of the refrigerator, and uses a specially connected air channel structure. The internal air duct is connected to the pipe, and then passes through the outlet of the refrigerating room, so as to realize the cooling of the variable temperature zone of the refrigerating room. The internal air duct is an inclined air duct. When the cold air flows in the above direction, the resistance is small, and when the hot and humid air flows in the opposite direction, the resistance is relatively large.

For achieving above object, the solution of the present utility model is:

An improved air duct structure for variable temperature room of refrigerator, which includes air duct freezer entrance, internal air duct, and air duct refrigerator exit. In the freezer drawer of the refrigerator compartment, the outlet of the air duct refrigerator room is connected to the temperature-changing chamber of the refrigerator room, and the internal air duct connects the inlet and outlet.

Further, the air duct is a "U"-shaped air duct structure placed obliquely.

The height difference H between the lower edge of the inlet of the air duct and the lower edge of the outlet is 20mm-30mm.

The inclination angle of the air duct is 10-20 degrees.

The inlet of the freezer is the same size as the mouth of the internal air duct, and the area ratio of the outlet of the freezer to the inlet of the freezer is 2:1.

Due to the adoption of the above technical scheme, the utility model has the following beneficial effects: the use of a relatively simple air duct structure realizes the cooling of the refrigerated room into a greenhouse; frost phenomenon.

Description of drawings

Fig. 1 is a structural schematic diagram of a refrigerator with a temperature-changing chamber in the prior art.

Fig. 2 is a structural schematic diagram of an embodiment of the utility model.

Fig. 3 is a schematic perspective view of an embodiment of the utility model.

Fig. 4 is a schematic diagram of the front structure of the embodiment of the utility model.

Fig. 5 is a top view structural diagram of an embodiment of the utility model.

Detailed ways

Below in conjunction with the embodiment shown in the accompanying drawings the utility model is further described.

The utility model includes a refrigerator freezer 1, a freezer fan 2, a freezer drawer 3, an air duct freezer entrance 4, an internal air duct 5, an air duct freezer outlet 6, a refrigerated variable room 7, a refrigerated variable room cover plate 8, and an air return port 9. Refrigerator refrigerating room 10, refrigerating room electric damper 20.

What the utility model discloses is a new type of air duct for a refrigerated variable temperature room. In addition, the shapes of the freezer compartment 1 and the freezer compartment 10 of the refrigerator need to be coordinated.

An assembly hole is added between the freezer compartment 1 and the freezer compartment 10 for installing the internal air duct 5, and a hole is opened in the rear side of the freezer drawer 3 in the freezer compartment 1 to assemble the air duct freezer compartment entrance 4. The rear side of the refrigerated variable room 7 also has a hole to assemble the air duct refrigerating room outlet 6 to form an air duct structure connecting the freezing room 1 and the refrigerating room 10. At the same time, the freezer must be equipped with a device for forced cold air convection circulation. The air duct structure is an obliquely placed "U"-shaped air duct structure composed of an inlet 4, an internal air duct 5, and an outlet 6, wherein the height difference H between the lower edge of the air duct inlet 4 and the lower edge of the outlet 6 in Fig. 4 is about It is 25mm, and its inclination α is about 10-20 degrees (as shown in Figure 5). Freezing chamber inlet 4 is consistent with the nozzle size of internal air duct 5, and the opening of refrigerating chamber outlet 6 is slightly larger, and the area ratio with freezing chamber inlet 4 is about 2: 1, which can be adjusted appropriately according to the design temperature of the refrigerated variable room. The utility model utilizes the height difference between the inlet 4 and the outlet 6 and the inclination angle of the air duct 5. On the one hand, the cold air in the freezer can be used to cool the refrigerated variable room; The backflow of the area to the local area of the freezer will cause the problem of local frost or condensation in the freezer.

The specific functions are as follows:

1. When the freezer fan 2 is running, cold air enters the refrigerator room 10 from the freezer room 1 along two routes, and one route enters the refrigerator room 10 from the upper electric damper 20 to lower the temperature of the refrigerator room; 7. Directly make the refrigerating room 7 cool, and the return air of the refrigerating room 10 returns to the freezing room 1 through the air return port 9 to complete the refrigerating cycle.

2. When the refrigerating chamber 10 is cooling, due to the density difference between the cold and hot air, the cold air sinks, and the hot and humid air rises, and the outlet 6 of the refrigerating chamber of the variable room air duct 5 is located higher than the inlet 4 of the freezing chamber, thus increasing the humidity and heat The resistance of air entering the freezing inlet 4 from the refrigerating outlet 6 along the air passage 5 reduces the possibility of partial frosting in the freezing chamber to a certain extent.

The above description of the embodiments is for those of ordinary skill in the technical field to understand and use the utility model. It is obvious that those skilled in the art can easily make various modifications to these embodiments, and apply the general principles described here to other embodiments without creative efforts. Therefore, the utility model is not limited to the above-mentioned embodiments, and the improvements and modifications made by those skilled in the art according to the disclosure of the utility model should be within the protection scope of the utility model.

Claims (6)

1. An improved air duct structure for variable temperature room of refrigerator, which includes air duct freezer entrance, internal air duct, and air duct refrigerator outlet, characterized in that: the air duct structure is installed in the lower part of the freezer and refrigerator compartments, and the air duct The inlet of the freezer is connected to the freezer drawer of the freezer, the outlet of the air duct refrigerator is connected to the variable temperature room of the refrigerator, and the internal air duct is connected to the inlet and the outlet. 2. The improved air duct structure of the refrigerator temperature-changing room according to claim 1, characterized in that: said air duct is a "U"-shaped air duct structure placed obliquely. 3. The improved air channel structure of the variable temperature room of the refrigerator according to claim 1, wherein the height difference H from the lower edge of the air channel inlet to the lower edge of the outlet is 20mm-30mm. 4. The improved air channel structure of the variable temperature room of the refrigerator according to claim 2, wherein the inclination angle of the air channel is 10-20 degrees. 5. The improved air channel structure of the variable temperature room of the refrigerator according to claim 1, wherein the size of the inlet of the freezing room is the same as that of the inner air channel. 6. The improved air duct structure of a variable temperature room for a refrigerator according to any one of claims 1 to 5, wherein the area ratio of the outlet of the refrigerating chamber to the inlet of the freezing chamber is 2:1.

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