JP2021032522A - refrigerator - Google Patents

Abstract

To provide a refrigerator in which an amount of heat intruding into the refrigerator through a front radiation pipe is reduced at a high level.SOLUTION: In a refrigerator where a refrigerating chamber is arranged upward and a freezing chamber and a vegetable chamber are arranged below and a front radiation pipe 305 is arranged to the front surface opening part of each of the chambers, the front radiation pipe 305 is structured so that the upstream side and the downstream side of a refrigerant flow in a freezing cycle are arranged together via the same side surface wall. Thereby, an amount of heat intruding into the refrigerator through the front radiation pipe 305 is efficiently reduced to improve cooling effect and achieve energy saving.SELECTED DRAWING: Figure 4

Description

The present invention relates to a refrigerator that prevents dew condensation at the opening of the refrigerator body and reduces heat intrusion into the refrigerator due to heat dissipation.

Patent Document 1 discloses a piping configuration of a refrigerator in which heat intrusion into the refrigerator is reduced while preventing dew condensation at the opening of the refrigerator body. In the piping of this refrigerator, the front heat radiating pipe 503 is arranged in the front opening other than the refrigerator compartment of the refrigerator 500, and the side heat radiating pipe 502 arranged on the side wall of the refrigerator body is the front opening of the left and right side walls. It is arranged in a position close to. By piping in such a shape, since the front heat dissipation pipe 503 does not exist in the front opening of the refrigerator compartment, the amount of heat invading into the refrigerator compartment can be reduced, and the refrigerator compartment can be the refrigerator. Since the internal temperature is in the positive temperature range, dew condensation can be prevented with a small heat source from the side heat radiating pipe 502 arranged at a position close to the front opening.

Japanese Unexamined Patent Publication No. 2014-077615

The present disclosure provides a refrigerator in which the amount of heat entering from the front heat radiating pipe into the refrigerator is further reduced.

The refrigerator in the present disclosure is partitioned by an inner box forming an outer box and a storage chamber and a heat insulating partition wall, a refrigerator compartment is arranged above, a freezing chamber and a vegetable compartment are arranged below, and the front opening of the freezing chamber is front. In the refrigerator in which the heat radiation pipe is arranged, the front heat radiation pipe is arranged via the same side wall on both the upstream side and the downstream side of the refrigerant flow in the refrigeration cycle.

Since the refrigerator of the present disclosure is arranged via the same side wall on both the upstream side and the downstream side of the refrigerant flow of the front heat radiating pipe in the refrigeration cycle, freezing is performed from the front heat radiating pipe arranged in the front opening. Heat intrusion into the chamber is limited to the front heat dissipation pipe side arranged on one side wall surface, and the amount of heat intrusion into the freezer chamber can be efficiently reduced, the cooling effect can be improved, and further energy saving can be achieved. ..

A perspective view showing the appearance of the refrigerator according to the first embodiment. Longitudinal sectional view of the warehouse according to the first embodiment Refrigerator refrigeration cycle diagram according to the first embodiment Refrigerator cooling system piping diagram according to the first embodiment Cross-sectional plan view along the AA line of FIG. Cross-sectional plan view along line BB in FIG. Cross-sectional plan view along the CC line of FIG. Cross-sectional plan view along the DD line of FIG. Cooling system piping diagram showing a conventional refrigerator

(Knowledge, etc. that was the basis of this disclosure)
At the time when the inventors came up with the present disclosure, there was a refrigerator described in Patent Document 1. This refrigerator can reduce the amount of heat entering the refrigerator compartment and at the same time prevent dew condensation from adhering to the front opening of the refrigerator compartment. However, the piping specification of Patent Document 1 is that the front heat radiation pipe 503 is located near the opening of the refrigerator compartment. Since the side heat radiating pipes 502 exist in close proximity to each other and are in a double piping state, there is a problem that the amount of heat entering the freezer chamber becomes large and the cooling efficiency is lowered.

Further, since the front heat radiating pipe 503 of the partition wall under the refrigerating room is configured to bridge the left side and the right side, one or three heat radiating pipes are provided in the partition wall between the refrigerating room and the freezing room ( It will be arranged in the partition wall (turn twice). If there is only one heat dissipation pipe in the partition wall, the temperature of the front opening of the partition wall cannot be secured and dew condensation may occur. In the case of three, there is a possibility that dew condensation will occur. There is a problem that the amount of heat entering the freezing chamber at the bottom of the wall increases and the cooling effect of the refrigerator is lowered. In other words, there is still room for improvement in terms of reducing the amount of heat entering the freezing room and the refrigerating room and at the same time preventing dew condensation from adhering to the front opening of the refrigerating room. The inventors have found such a problem and have come to construct the subject matter of the present disclosure in order to solve the problem.

Therefore, the present disclosure provides a refrigerator in which a part of the front heat radiating pipe arranged in the vicinity of the opening is reduced and the amount of heat invading from the opening is more strongly reduced.

Hereinafter, embodiments will be described in detail with reference to the drawings. However, more detailed explanation than necessary may be omitted. For example, detailed explanations of already well-known matters or duplicate explanations for substantially the same configuration may be omitted. This is to prevent the following explanation from becoming unnecessarily redundant and to facilitate the understanding of those skilled in the art.

It should be noted that the accompanying drawings and the following description are provided for those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[1-1. Constitution]
(Embodiment 1)
Hereinafter, the first embodiment will be described with reference to FIGS. 1 to 5D.

FIG. 1 is a perspective view showing the appearance of the refrigerator 100, and FIG. 2 is a vertical sectional view of the refrigerator 100. The refrigerator 100 includes a metal (for example, iron plate) outer box 111, a hard resin (for example, ABS) inner box 112, a vacuum heat insulating material 115 attached to the outer box 111, and an outer box 111 and an inner box 112. It is composed of a foam heat insulating material 117 (for example, hard urethane) filled between the two.

The refrigerator 100 includes a plurality of storage chambers including a refrigerator compartment 200, a switching chamber 201, an ice making chamber 202, a freezing chamber 203, and a vegetable compartment 204, and is opened and closed by doors 101, 102, 103, 104, and 105, respectively. ..

The refrigerating room 200 is set to a refrigerating temperature zone in which the stored material does not freeze for refrigerating storage. The vegetable compartment 204 is set to a temperature zone slightly higher than that of the refrigerator compartment 200 as a temperature suitable for storing vegetables. The freezing chamber 203 is set to a freezing temperature zone for freezing storage. The temperature zone of the switching chamber 201 can be switched to a temperature zone desired by the user from among a plurality of temperature zones.

Further, the refrigerator 100 includes a first machine room 205 located at the upper part of the refrigerator 100, a second machine room 207 located at the lower part of the refrigerator 100, and a cooling room 208 located at the back surface of the refrigerator 100. The cooling chamber 208 includes a cooler 209 that generates cold air, a defrost heater for removing frost adhering to the cooler 209, and the like.

In the first machine room 205, a compressor 206, an outer capacitor described later, and the like are expropriated. The second machine room 207 houses a defrosting dish (not shown), a defrosting fan (not shown), and the like.

FIG. 3 is a freezing cycle diagram of this refrigerator. The refrigerator 100 incorporates the refrigeration cycle 300 shown in FIG. The refrigeration cycle 300 includes a compressor 206, an outer condenser 301 arranged in the machine chamber, a back heat radiating pipe 302 arranged on the back wall, a side heat radiating pipe 303 arranged on the side wall, and a bottom heat radiating pipe 304 arranged on the bottom wall. It has a front heat radiating pipe 305, a second back heat radiating pipe 308, a capillary tube 306, and a cooler 209 arranged in the front opening, and is configured by connecting these in an annular shape.

FIG. 4 is a piping diagram of the cooling system of this refrigerator.

The front heat radiating pipe 305 is connected to the bottom heat radiating pipe 304 in the second machine room 207, passes through the lower part of the left side wall 114, and extends to the front front opening. After that, it passes through the flange on the left side of the vegetable compartment 204 at the bottom, and is arranged by turning inside the partition wall 210 (see FIG. 2, the same applies hereinafter) between the freezing chamber 203 located at the upper part of the vegetable compartment 204. Passing through the left side of the freezing room 203, it turns in the partition wall 210 between the freezing room 203 and the ice making room 202 and the switching room 201 located at the upper part to return to the left side of the front opening, and then the left side of the ice making room 202. It passes through the upper refrigerating chamber 200 and the partition wall 210 that partitions the upper and lower parts, and further passes through the left side wall 114 and is guided into the second machine chamber 207.

That is, the front heat radiating pipe 305 of the front opening is arranged in the front opening of the switching chamber 201, the ice making chamber 202, the freezing chamber 203, and the vegetable compartment 204 below the partition wall 210 under the refrigerating chamber 200. .. The front heat radiating pipe 305 is arranged on both the upstream side a and the downstream side b of the refrigerant flow in the refrigeration cycle via the same side wall, and one side wall of the left and right side walls (in the case of the present embodiment). It is not routed to the right side wall 113) side.

That is, the front heat radiating pipe 305 of the front opening is arranged on the left side flange of the switching chamber 201, the ice making chamber 202, the freezing chamber 203, and the vegetable compartment 204 below the partition wall 210 under the refrigerating chamber 200, and is arranged on the right side. It is not arranged on the flange of.

The front heat radiating pipe 305 is connected to the second back heat radiating pipe 308 (see FIG. 3, not shown in FIG. 4) in the second machine room 207. The second back heat dissipation pipe 308 is arranged on the back wall, is connected to a dryer (not shown) in the first machine room 205, and is connected to the compressor 206 via the capillary tube 306 and the cooler 209. It constitutes a cooling system.

On the other hand, the side heat radiating pipe 303 is connected to the back heat radiating pipe 302 in the second machine room 207, and then the inside of the side wall is disposed through the lower side wall, and the inside of the top wall of the refrigerator 100 is disposed. It is bridged to the side wall side on the opposite side. After that, the inside of the side wall on the opposite side is arranged, and the lower side wall is connected to the bottom heat radiating pipe 304 in the second machine room 207.

That is, the side heat radiating pipe 303 is arranged on the right side wall 113 and the left side wall 114 of the outer box 111, and is upstream of the side heat radiating pipe 303 on the front opening side of the right side wall 113 in the depth direction. A side portion is arranged, and a pipe on the downstream side is formed toward the rear so that the refrigerant flows in the height direction of the refrigerator 100.

After that, it is arranged on the left side wall 114 via the top wall, and a pipe is formed so that the refrigerant flows in the height direction of the refrigerator 100 from the rear in the depth direction toward the front opening side.

Here, the side heat radiating pipe 303 arranged on the right side wall 113 where the front heat radiating pipe 305 is not arranged has an opening side arranging portion 307 for arranging the vicinity of the front opening of the freezing chamber 203. The opening-side arrangement portion 307 is arranged on the front side of the side heat-dissipating pipe 303a arranged on the side wall (left side side wall 114) on the side where the front heat-dissipating pipe 305 is arranged. As a result, only the opening-side arrangement portion 307 of the side heat-dissipating pipe 303 is located near the opening on the right side of the freezing chamber 203 and the switching chamber 201, and only the front heat-dissipating pipe 305 described above is located near the opening on the left side. It becomes a form to do.

The piping of the side heat radiating pipe 303a connected from the opening side arranging portion 307 to the refrigerating chamber 200 side is arranged at a position shifted rearward from the front opening as in the case of the side radiating pipe 303 disposed on the left side wall 114. It is installed.

The side heat radiating pipe 303 and the front heat radiating pipe 305 arranged on the left side wall 114 are arranged so that heat exchange does not occur between the heat radiating pipes when they intersect or approach each other.

FIG. 5A is a cross-sectional plan view taken along the line AA of FIG.

The front heat radiating pipe 305 is not arranged in the front opening on the left side of the refrigerator compartment 200.

The side heat radiating pipe 303 of the left side wall 114 is fixed to the left side wall 114 with aluminum tape or the like, and at a position shifted rearward from the front opening, in the groove of the vacuum heat insulating material 115 attached to the left side wall 114. It is arranged.

FIG. 5B is a cross-sectional plan view taken along the line BB of FIG.

The front heat radiating pipe 305 is not arranged in the front opening on the right side of the refrigerator compartment 200.

The side heat radiating pipe 303 (303a) of the right side wall 113 is fixed to the right side wall 113 with aluminum tape or the like as in the case of the left side, and is attached to the right side wall 113 at a position shifted rearward from the front opening. It is arranged in the groove of the heat insulating material 115.

FIG. 5C is a cross-sectional plan view taken along the line CC of FIG.

The front heat radiating pipe 305 on the left side of the freezing chamber 203 is fixed to the flange portion 116 of the outer box 111 so that the distance between the heat radiating pipe and the inside of the freezing chamber 203 is as far as possible.

FIG. 5D is a cross-sectional plan view along the DD line of FIG.

The side heat radiating pipe 303 has an opening side arranging portion 307 for arranging the vicinity of the front opening of the freezing chamber 203, and the opening side arranging portion 307 is arranged on the left side wall 114 (FIG. (Refer to 5C), it is arranged in the front part.

Further, the opening side arrangement portion 307 is arranged on the front side of the front side end portion of the vacuum heat insulating material 115 attached to the right side wall 113.

Further, the opening side arrangement portion 307 is fixed to the flange portion 116 of the outer box 111 in the same manner as the front heat dissipation pipe 305 on the left side of the freezing chamber 203, so that the distance between the heat dissipation pipe and the inside of the refrigerator is kept as far as possible.

[1-2. motion]
The utility of the refrigerator configured as described above will be described. Since the front heat dissipation pipe 305 of this refrigerator is arranged on the left side wall 114, that is, the same side wall on both the upstream side a and the downstream side b of the refrigerant flow in the refrigeration cycle, the upstream side a and the downstream side b are on the left and right. Compared to the conventional one, which is divided into side walls and has a double piping state with the side heat dissipation pipe, the amount of heat intrusion from the front heat dissipation pipe 305 into each room such as the freezing room 203 and the switching room 201 can be reduced. Can be planned.

That is, according to the configuration of the present embodiment in which both the upstream side a and the downstream side b of the front heat radiating pipe 305 are arranged on the same side wall, one side wall of the refrigerator (in the case of the present embodiment, the right side wall 113). Since the front heat radiating pipe 305 arranged is eliminated, heat intrusion from the front heat radiating pipe 305 arranged in the front opening into the freezer chamber 203 and the switching chamber 201 is performed on one side wall surface (in the present embodiment). In this case, only from the front heat dissipation pipe 305 arranged on the left side wall 114), the amount of heat invading the freezer chamber 203 and the like is greatly reduced as compared with the conventional case. Further, in the present embodiment, the side heat radiating pipe 303 is also located on the rear side of the downstream side b of the front heat radiating pipe 305 in the left side wall 114 in which the upstream side a and the downstream side b of the front heat radiating pipe 305 are arranged. Therefore, the heat intrusion from the side heat dissipation pipe 303 can be reduced to a negligible degree.

Further, the left side wall 114 provided with the front heat radiating pipe 305 is provided with a vacuum heat insulating material 115 between the outer box 111 and the inner box 112, and is stored with respect to at least a part of the front heat radiating pipe 305 passing through the left side wall 114. Since the vacuum heat insulating material 115 is arranged inside, the invading heat from the front heat radiating pipe 305 arranged on the side wall on both the upstream side a and the downstream side b can be reduced by the vacuum heat insulating material 115.

Further, since the front heat radiating pipe 305 of the front opening is arranged below the partition wall 210 under the refrigerating chamber 200, the front radiating pipe 305 arranged in the partition wall 210 is placed in the refrigerator, that is, in the refrigerating chamber 200. The amount of heat entering the refrigerator compartment 200 from the lower front opening can also be reduced. Moreover, in the present embodiment, the number of front heat radiating pipes 305 to be arranged in the partition wall 210 is two instead of one or three as in the conventional case, so that the front portion of the partition wall 210 under the refrigerating chamber 200 The amount of heat entering the refrigerating chamber 200 can be reduced while ensuring the dew condensation prevention action.

Further, the front heat dissipation pipe 305 prevents dew condensation on the front opening on the left side wall 114 side of the freezing chamber 203 and the switching chamber 201, and the right side wall 113 prevents dew condensation on the front opening on the right side wall 113 side. This is performed by electric heat from the side heat radiating pipe 303 arranged in.

At this time, the side heat radiating pipe 303 arranged on the right side wall 113, that is, the other side (right side wall 113) different from the one side (left side wall 114) on which the front heat radiating pipe 305 is arranged. The arranged side heat radiating pipe 303 has an opening side arranging portion 307, and the opening side arranging portion 307 is arranged on the front side of the side radiating pipe 303 on the side on which the front heat radiating pipe 305 is arranged. Therefore, the rate at which the heat radiated from the opening-side arrangement portion 307 on the upstream side of the refrigerant flow is transferred to the side wall of the outer box 111 and reaches the front opening is greatly improved. Therefore, dew condensation on the front opening of the freezing chamber 203, the switching chamber 201, etc. can be reliably prevented.

Further, since the opening side arrangement portion 307 of the side heat radiating pipe 303 replaces the role of preventing dew condensation, one side of the left and right sides of the front heat radiating pipe 305, which has conventionally played a role of preventing dew condensation, is on the right side in this embodiment. The side can be eliminated and reduced as described above, and the material cost of the front heat radiating pipe 305 can be reduced.

By significantly reducing the number of heat radiating pipes, the heat entering the refrigerator can be reduced, but the amount of heat radiated from the condenser such as the heat radiating pipe in the cooling system may be reduced, which may deteriorate the system efficiency. By improving the heat dissipation capacity of the outer capacitor 301 arranged in, it is possible to reduce heat intrusion into the refrigerator while maintaining system efficiency.

[1-3. Effect, etc.]
As described above, in the present embodiment, the front heat radiating pipe 305 arranged in the front opening of the refrigerator is arranged on the same side wall on both the upstream side and the downstream side of the refrigerant flow in the refrigeration cycle. The amount of heat invading from the front heat radiating pipe 305 arranged in the opening into the freezing temperature zone such as the freezing chamber 203 can be efficiently reduced, the cooling effect can be improved, and energy saving can be achieved.

Further, a vacuum heat insulating material 115 is provided between the outer box 111 and the inner box 112 of the left side wall 114, and the vacuum heat insulating material 115 is arranged inside the refrigerator with respect to at least a part of the front heat radiating pipe 305 passing through the left side wall 114. Therefore, the heat entering from the front heat radiating pipe 305 arranged on the side wall can be reduced.

Further, since the front heat radiating pipe 305 of the front opening is arranged below the partition wall 210 under the refrigerating chamber 200, the amount of heat entering the refrigerating room from the front heat radiating pipe 305 arranged in the partition wall 210 is also increased. Can be reduced.

Further, the side heat radiating pipe 303 is provided with an opening side arranging portion 307 on the other side different from the one side on which the front radiating pipe 305 is arranged, and the opening side arranging portion 307 is the front heat radiating pipe. Since the side heat radiating pipe 303 arranged on the left side wall 114 where the 305 is arranged is arranged in front of the side heat radiating pipe 303, the heat radiated from the side heat radiating pipe 303 on the upstream side is efficiently dissipated in the freezer chamber 203. Heat is transferred to the front opening, and dew condensation on the front opening can be effectively prevented.

Moreover, the opening side arrangement portion 307 of the side heat radiating pipe 303 is arranged on the front side of the front side end portion of the vacuum heat insulating material 115 attached to the right side wall 113, and the heat radiating pipe and the vacuum heat insulating material are arranged. Since the metal layer of the outer packaging material of 115 does not come into contact with each other, it is possible to suppress heat bridging into the refrigerator such as the freezer chamber 203 while preventing dew condensation, and it is possible to reduce heat intrusion into the refrigerator by the heat bridge.

Further, since the opening side arrangement portion 307 of the side heat radiating pipe 303 is fixed to the flange portion 116 of the outer box 111 like the front heat radiating pipe 305 on the left side, the distance between the heat radiating pipe and the inside of the refrigerator should be kept as far as possible. The heat is transferred from the side heat radiating pipe 303 to the inside of the refrigerator including the refrigerating room 200, the switching room 201, the vegetable room 204, etc. as well as the freezing room 203 via the outer box 111, the inner box 112, and the foamed heat insulating material. Can be suppressed. Moreover, since it can be reliably fixed to the outer box 111, it is possible to provide a refrigerator with reduced mounting variations.

In addition, since the front heat radiating pipe 305 is arranged on the same left side of the left and right sides of the front opening of each room, it is easy to install the front heat radiating pipe 305 in the outer box 111, and the outside is easy to perform. It is possible to reduce breakage and breakage of the front heat radiating pipe 305 in the bending process of the box 111.

(Other embodiments)
As described above, the first embodiment has been described as an example of the technology disclosed in the present application. However, the technique in the present disclosure is not limited to this, and can be applied to embodiments in which changes, replacements, additions, omissions, etc. have been made. It is also possible to combine the components described in the first embodiment to form a new embodiment.

For example, in the present embodiment, the front heat radiating pipe 305 is arranged on the left side of the front opening, and the opening side arranging portion 307 of the side heat radiating pipe 303 is arranged on the right side. It may be arranged in the above, and the same effect can be obtained.

Further, in the present embodiment, the opening side arrangement portion 307 of the side heat radiating pipe 303 is provided in the front opening of the freezing chamber 203 and the vegetable compartment 204, but only the freezing chamber 203 is provided, and the front opening side of the vegetable compartment 204 is provided. The side heat radiating pipe 303 may be arranged at a position shifted rearward from the front opening as in the refrigerating chamber 200.

Further, the machine room in the present embodiment is divided into a first machine room 205 and a second machine room 207, and an integrated machine room is provided in the lower part of the refrigerator in the machine room. A compressor 206, an outer condenser 301, a defrosting dish, a defrosting fan, and the like may be accommodated.

Further, the refrigerating cycle shown in FIG. 3 is not limited to this order, and the order of the heat radiating pipes for arranging the wall surface of the refrigerator may be different.

As described above, the technique in the present disclosure can be modified, replaced, added, omitted, etc. within the scope of claims or the equivalent thereof.

As described above, the refrigerator according to the present disclosure can more strongly reduce the heat entering from the front opening at a high level, so that it can be used as a freezing application product such as a refrigerator or a cold storage for home or business use that requires high energy saving. Applicable.

100 Refrigerator 111 Outer box 112 Inner box 113 Right side wall 114 Left side wall 115 Vacuum heat insulating material 116 Flange part 200 Refrigerator room 203 Freezing room 204 Vegetable room 210 Partition wall 303, 303a Side heat dissipation pipe 305 Front heat dissipation pipe 307 Open side arrangement Department

Claims (6)

It was partitioned by an inner box forming a storage chamber and an outer box and a heat insulating partition wall, and a refrigerator compartment was arranged above, a freezing chamber and a vegetable compartment were arranged below, and a front heat radiation pipe was arranged at the front opening of the freezing chamber. In a refrigerator, the front heat radiation pipe is arranged via the same side wall on both the upstream side and the downstream side of the refrigerant flow in the refrigeration cycle. The vacuum heat insulating material is provided between the outer box and the inner box of the side wall, and the vacuum heat insulating material is arranged inside the refrigerator with respect to at least a part of the front heat radiating pipe passing through the side wall. The refrigerator according to claim 1. The refrigerator according to claim 1 or 2, wherein the front heat radiating pipe of the front opening is arranged below the partition wall under the refrigerator compartment. The side heat radiating pipe provided on the side wall and arranged on the side wall on the other side different from the side on which the front heat radiating pipe is arranged is provided with the front heat radiating pipe. The refrigerator according to any one of claims 1 to 3, wherein the refrigerator is arranged on the front side of the side heat radiating pipe arranged on the side wall of the side to be formed. The side heat radiating pipe arranged on the side wall of the other side different from the side on which the front heat radiating pipe is arranged is characterized in that the side heat radiating pipe is arranged on the front side of the front end portion of the vacuum heat insulating material. The refrigerator according to claim 4. The refrigerator according to claim 4 or 5, wherein the outer box has a flange portion, and the side heat radiating pipe is fixed to the flange portion.

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