JP4187611B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator, and more particularly to a refrigerator in which a condenser for condensing refrigerant is disposed at the bottom of a main body.

A conventional refrigerator in which a condenser is arranged at the bottom of the main body is disclosed in Patent Document 1. This refrigerator is provided with a duct at the bottom of the main body, and the inside of the duct is divided into front and rear. A front chamber in which a condenser is arranged is provided at the front of the duct. A machine room in which a compressor is arranged is provided at the rear of the duct. A blower is arranged at the boundary between the front chamber and the machine room, and an air inlet and an air outlet are formed on the front side and the back side of the duct, respectively. The outside air taken in from the intake port by driving the blower flows through the front chamber and the machine chamber and is exhausted from the exhaust port. Thereby, the condenser and compressor which become high temperature are cooled, and the improvement of the cooling efficiency of the refrigerating cycle operated by the drive of a compressor is aimed at.
JP 2000-310473 A (2nd page-4th page, Fig. 2)

  According to the conventional refrigerator, the storage room isolated through the duct and the heat insulating wall is cooled by the operation of the refrigeration cycle. The heat insulating wall is formed by filling a foamed resin between resin molded products forming the casing of the refrigerator main body, and the front side filled with the foamed resin is closed by the base plate. When the open / close door that opens and closes the storage chamber is closed, the packing provided on the periphery of the open / close door contacts the base plate. In order to seal the storage chamber, the packing is provided with a magnet and the base plate is made of metal.

  When the open / close door is closed, the upper part of the base plate is covered with the open / close door and comes into contact with the cool air in the storage chamber, so that the base plate becomes cold. There is a problem in that dew condensation occurs on the base plate because the room temperature outside air comes into contact with the lower part of the base plate which has become low temperature. In particular, the air inlet formed on the front side of the duct is disposed in the vicinity of the base plate. For this reason, room temperature outside air flowing into the intake port is always in contact with the lower part of the base plate, and condensation easily occurs. Furthermore, if the storage room is a freezing room, the base plate becomes cooler and condensation easily occurs.

  In order to prevent dew condensation, it is possible to incorporate a hot pipe on the heat insulating wall, but there is a problem that the heat load of the refrigerator increases and the number of parts increases. It is also possible to form a U-shaped passage in the duct, exhaust the air heat exchanged with the condenser and the compressor from the front, raise the temperature of the base plate with the exhaust heat, and prevent condensation. However, there is a problem that the heat exchange efficiency is lowered due to the reduction of the air volume due to the reduction of the intake area.

  An object of this invention is to provide the refrigerator which can prevent condensation easily.

In order to achieve the above object, the present invention is arranged on the bottom of the main body , and the fin is spirally wound around the refrigerant pipe that is folded back at the end so that the front side is the upstream portion and the back side is the downstream portion and is parallel to the front-rear direction. In the refrigerator comprising: a condenser provided; a claw portion provided on the bottom of the main body, and fixing the condenser ; and a storage chamber adjacent to the upper side of the condenser via a heat insulation wall; and a front surface of the heat insulation wall A base plate that covers the side and contacts the open / close door of the storage chamber; a bottom plate that covers the bottom surface of the heat insulating wall and contacts the base plate; and an upper part of the upstream portion of the condenser, comprising a heat-conducting member made of butyl rubber communicating the condenser heat in the base plate, and with the lower surface of the heat conducting member and the fin is inserted, the bottom plate is abutted on the upper surface It is characterized by a door. According to this configuration, the front surface side of the heat insulating wall is covered with the base plate, and a part of the heat of the condenser that becomes the high temperature side by the operation of the refrigeration cycle is transmitted to the base plate via the heat conducting member. As a result, the temperature of the base plate that is brought into contact with the air in the storage chamber and becomes low in temperature is raised.

  According to the present invention, in the refrigerator having the above-described configuration, the condenser is installed and a duct having an intake port for taking in the cooling air of the condenser is provided on the front side. According to this configuration, the air inlet is disposed below the base plate, and the condenser is cooled by the air taken into the duct from the front side without a shield.

  When the base plate is made of metal, the refrigerator body is reinforced and the storage chamber is sealed by adsorption with a magnet or the like provided on the opening / closing door. The heat conducting member may be formed of butyl rubber having a heat transfer effect and a vibration isolating effect.

  Further, a metal bottom plate that covers and reinforces the bottom surface side of the heat insulating wall may be provided in contact with the base plate, and the heat of the condenser may be transmitted to the base plate via the heat conducting member and the bottom plate.

  When the storage room is a freezing room, the temperature of the base plate that comes into contact with the cooler air in the freezing room is raised by the heat of the condenser.

  Moreover, the present invention is characterized in that in the refrigerator having the above-described configuration, the freezer compartment is formed by dividing the lower part of the main body into left and right portions by a partition wall, and the heat conducting member is disposed in the freezer compartment below. According to this configuration, the heat of the condenser is transmitted from the heat conducting member to the base plate on the freezer compartment side that is at a lower temperature.

  According to the present invention, in the refrigerator having the above-described configuration, a compressor that operates a refrigeration cycle is provided, and a back condenser that cools the refrigerant is provided between the compressor and the condenser. According to this configuration, the refrigerant cooled by the back condenser flows into the condenser, and the heat generation of the condenser is suppressed.

  According to the present invention, since the heat conducting member that transfers the heat of the condenser to the base plate is provided, the base plate that comes into contact with the cool air in the storage chamber and becomes low temperature is heated, and condensation of the base plate is prevented.

  In addition, according to the present invention, an intake port for taking in the cooling air of the condenser is provided in front of the duct where the condenser is installed, so that a sufficient amount of air is taken in from the front side without a shield to improve the cooling efficiency of the condenser. it can. At this time, air flows into the air intake port disposed below the base plate, so that the base plate is heated by the heat conducting member to prevent condensation of the base plate even when ambient air is constantly in contact with the base plate.

  According to the present invention, since the base plate with which the door is in contact is made of metal, the housing can be reinforced and the storage chamber can be sealed by adsorption with a magnet or the like provided on the door. At this time, even if the base plate becomes cold due to contact with the cool air in the storage chamber, the base plate in the exposed portion is heated by the heat conducting member to prevent condensation of the base plate coming into contact with the outside air.

  According to the present invention, since the heat conducting member is made of butyl rubber, the heat of the condenser can be easily transmitted to the base plate, and vibration can be prevented. Further, it is possible to absorb the variation in the gap between the condenser and the heat insulating wall and reliably transfer the heat of the condenser to the base plate.

  According to the present invention, since the heat conducting member and the base plate are connected via the metal bottom plate covering the bottom side of the heat insulating wall, the heat of the condenser is transmitted to the base plate via the heat conducting member and the bottom plate. . Thereby, the tolerance of the position shift of a heat conductive member increases, and a manufacturing man-hour can be reduced.

  Further, according to the present invention, since the storage chamber adjacent to the condenser is composed of the freezer compartment, even if the base plate comes into contact with the air in the freezer compartment and becomes lower in temperature, the base plate is heated by the heat conducting member to cause condensation of the base plate. Is prevented.

  Further, according to the present invention, since the heat conducting member is disposed below one freezer compartment in which the lower part of the main body is divided into left and right, the condenser from the heat conducting member to the base plate on the freezer compartment where condensation is likely to occur at a lower temperature. Heat is transmitted and condensation on the base plate is prevented.

  Further, according to the present invention, since the back condenser for cooling the refrigerant is provided between the compressor and the condenser, the deterioration of the heat conduction member such as butyl rubber and the adhesion peeling due to the condenser becoming too hot is prevented. be able to.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a refrigerator according to an embodiment. The refrigerator 1 has a refrigerator compartment 13 in the upper part, and a vegetable compartment 14 and a freezer compartment 15 that are divided into left and right via a partition wall (not shown). The refrigerator compartment 13, the vegetable compartment 14, and the freezer compartment 15 can be opened and closed by doors 13a, 14a, and 15a, respectively. At the bottom of the main body below the vegetable compartment 14 and the freezer compartment 15, a duct 3 having an air inlet 3a on the front surface is provided.

  FIG. 2 is a plan view showing the configuration inside the duct 3. The inside of the duct 3 is divided by an L-shaped partition wall 4, and a condenser 5 in which fins 5 a are spirally wound around a refrigerant pipe through which a refrigerant flows is arranged in the front chamber 16 at the front part. A machine room 17 is provided at the rear, and a blower 19 is provided at the boundary with the front room 16. A compressor 18 is disposed in the machine room 17, and an exhaust port 3b is provided on the back surface. An evaporating dish 20 for collecting drain water from a cooler (not shown) is disposed in the front chamber 16.

  One end of the compressor 18 is connected to the condenser 5 through a back condenser, and the other end is connected to a cooler (not shown). An inner condenser, a dryer, and a capillary tube are provided between the condenser 5 and the cooler. Thus, a refrigeration cycle is configured, and the cooler on the low temperature side is cooled by the operation of the refrigeration cycle by driving the compressor 18. The air in the refrigerator compartment 13, the vegetable compartment 14, and the freezer compartment 15 is cooled by exchanging heat with a cooler.

  Also, the indoor air that has flowed into the duct 3 from the intake port 3a by driving the blower 19 cools the condenser 5 and the compressor 18, and is exhausted from the exhaust port 3b. Thereby, the condenser 5 and the compressor 18 which become high temperature by the driving | operation of a refrigerating cycle can be cooled, and the cooling efficiency of a refrigerating cycle can be improved.

  FIG. 3 is a side sectional view showing the bottom of the refrigerator 1. Although the figure shows the cross section of the freezer compartment 15, the cross sectional shape of the vegetable compartment 14 is also the same. The freezer compartment 15 and the duct 3 are insulated and insulated by the heat insulation wall 7. The heat insulating wall 7 is formed by filling a foamed resin 22 between an inner box 21 made of a resin molded product and a bottom plate 11 made of metal for reinforcement. The front side filled with the foamed resin 22 is closed by the base plate 9.

  A packing 8 having a magnet (not shown) is provided around the opening / closing door 15a that opens and closes the freezer compartment 15. The base plate 9 is made of metal for reinforcement of the heat insulating wall 7 and adsorption with the magnet. As a result, the magnet is attracted to the base plate 9 so that the inside of the freezer compartment 15 is sealed.

  The condenser 5 is fixed by a claw portion 6 provided in the duct 3, and the fin 5 a wound around the condenser 5 increases the surface area of the condenser 5 to increase the heat radiation amount. A heat conducting member 10 is provided at the front of the duct 3. The heat conducting member 10 is made of butyl rubber having high heat conductivity, and is bonded so that the upper end of the tip is in contact with the base plate 9, and the bottom side is in contact with the fin 5a.

  Thereby, a part of the heat generated by the condenser 5 on the high temperature side by the operation of the refrigeration cycle is transmitted to the base plate 9 via the heat conducting member 10. Since the upper part of the base plate 9 is covered with the open / close door 15a and comes into contact with the cold air in the freezer compartment 15, the temperature becomes low. However, since the temperature of the lower part of the base plate 9 is raised by the heat transmitted by the heat conducting member 10, it is possible to prevent condensation due to contact with the outside air. Condensation can be similarly prevented when the base plate 9 is made of a material other than metal. However, when the base plate 9 is made of metal, it is easy to transmit cold heat in the freezer compartment 15, so that condensation is likely to occur and the effect of preventing condensation is greater.

  Further, since the air inlet 3 a is provided on the front side of the duct 3, a large amount of air can be taken into the duct 3 from the front without an obstruction. At this time, air at room temperature is always in contact with the base plate 9 disposed in the vicinity of the intake port 3a and condensation tends to occur. However, condensation can be prevented by the heat transmitted by the heat conducting member 10.

  Since the bottom plate 11 is made of metal, the bottom plate 11 may be provided in contact with the base plate 9 and the heat conducting member 10 may be bonded to the bottom plate 11. Even in this way, the heat of the condenser 5 is transmitted to the base plate 9 through the heat conducting member 10 and the bottom plate 11, and the same effect as described above can be obtained.

  Note that the heat conductive member 10 may be replaced with butyl rubber to form another heat conductive putty, or another member having high heat conductivity may be provided. For example, a metal plate coated with a heat conductive grease can be used. However, since the heat conduction putty such as butyl rubber has elasticity, the vibration of the compressor 18 and the like can be damped and the variation of the gap between the condenser 5 and the heat insulating wall 7 can be absorbed to reliably transfer the heat of the condenser 5 to the base plate 9. Can tell. Furthermore, by attaching the butyl rubber so as to insert the fin 5a having a small thickness as viewed from the top, the contact area between the fin 5a and the butyl rubber can be widened to efficiently transfer heat.

  Further, since a back condenser (not shown) is provided between the compressor 18 and the condenser 5, the refrigerant that has flowed out of the compressor 18 and lowered in temperature by the back condenser flows into the condenser 5. Thereby, deterioration and adhesion peeling of butyl rubber by the condenser 5 becoming too high temperature can be prevented.

  In addition, the base plate 9 below the vegetable compartment 14 can similarly prevent condensation by the heat conducting member 10. However, in the case of the vegetable room 14 or the like having a relatively high internal temperature, the amount of dew generation is small, so the heat conducting member 10 is not provided, and the freezer room 15 is transmitted to the base plate 9 on the freezer room 15 side where the temperature is lower. The heat conducting member 10 may be provided only below. Thereby, cost reduction can be aimed at.

  According to the present invention, since the heat conduction member for transferring the heat of the condenser is provided on the base plate arranged on the front surface of the heat insulating wall that separates the condenser and the storage chamber, there is no increase in the number of parts and a decrease in cooling efficiency. A refrigerator that can easily prevent condensation can be provided.

These are front views which show the refrigerator of embodiment of this invention. These are top views which show the inside of the duct of the refrigerator of embodiment of this invention. These are side surface sectional drawings which show the duct part of the refrigerator of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator 3 Duct 3a Intake port 3b Exhaust port 5 Condenser 5a Fin 7 Heat insulation wall 8 Packing 9 Base plate 10 Thermal conduction member 11 Bottom plate 13 Refrigeration room 13a, 14a, 15a Open / close door 14 Vegetable room 15 Freezer room 17 Machine room 18 Compression Machine 19 Blower

Claims (6)

A condenser which is arranged at the bottom of the main body and spirally wraps fins around a refrigerant pipe which is folded back at the end so that the front side is the upstream part and the back side is the downstream part and is parallel to the front-rear direction ;
A claw portion provided at the bottom of the main body and fixing the condenser;
A storage chamber adjacent above the condenser via an insulating wall ;
In the refrigerator with
A base plate that covers the front side of the heat insulating wall and contacts the open / close door of the storage chamber;
A bottom plate made of metal that covers the bottom side of the heat insulating wall and contacts the base plate;
A heat conducting member made of butyl rubber that is disposed on the upper part of the upstream portion of the condenser and that transfers heat of the condenser to the base plate ;
Equipped with a,
The refrigerator, wherein the fin is inserted into a lower surface of the heat conducting member, and the bottom plate is brought into contact with an upper surface .   The refrigerator according to claim 1, wherein a duct having an intake port for taking in cooling air of the condenser is provided on the front side while the condenser is installed.   The refrigerator according to claim 1 or 2, wherein the base plate is made of metal. The refrigerator according to any one of claims 1 to 3, wherein the storage room is a freezing room . The refrigerator according to claim 4 , wherein the freezer compartment is formed by one of a main body lower part divided into right and left by a partition, and the heat conducting member is disposed below the freezer compartment . The refrigerator according to any one of claims 1 to 5 , further comprising a compressor that operates a refrigeration cycle, and a back condenser that cools the refrigerant is provided between the compressor and the condenser .

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