JP5315788B2 - refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator capable of preventing dew formation on a front face part of a refrigerator bottom part without making a user of the refrigerator feel uncomfortable due to warm air. <P>SOLUTION: The refrigerator 100 having a heat insulating case body 101 is provided with an air blowing means 324 for sending air outside the heat insulating case body 101 from the rear side of a bottom part 302 of the heat insulating case body 101 toward the front side and with a compressor 201 arranged outside an air course for making air outside the heat insulating case body 101 pass. Thus, since sucked air is blown toward the front face part of the refrigerator bottom part, retention of air around the front face part of the refrigerator bottom part can be eliminated, to prevent dew formation from being generated on the front face part of the refrigerator bottom part. Moreover, since the compressor is not arranged within the air course of the discharged air, the temperature of the air discharged from the front face of the refrigerator bottom part is not increased largely, to prevent uncomfortable feeling of the user of the refrigerator due to warm air. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a refrigerator, and more particularly, to a refrigerator that prevents dew condensation from occurring on the front portion of the bottom of the refrigerator.

  The refrigerator includes a cooling cycle composed of devices such as a compressor and a condenser that performs heat exchange. And since a compressor and a capacitor for heat dissipation become high temperature, it is necessary to cool a compressor and a capacitor for heat dissipation. For this reason, conventionally, the compressor and the heat-dissipating condenser are cooled by the air sucked from the front of the refrigerator, and hot air having a high temperature is discharged from the rear of the refrigerator (for example, see Patent Document 1).

In addition, a refrigerator that cools a compressor and a heat-dissipating capacitor with air sucked from the left side of the front of the refrigerator and discharges hot air not only from the back of the refrigerator but also from the right side of the front of the refrigerator has been proposed (for example, patents). Reference 2). Thereby, the air volume of the air for cooling is increased and the heat dissipation performance is improved.
JP 59-212669 A JP 2003-56970 A

  By the way, in order to form dew condensation on the front part of the refrigerator bottom, an electric heater, a heat radiating tube, and the like are installed on the front part of the refrigerator bottom. However, there is a desire to reduce the number of parts of the refrigerator in order to reduce costs. Further, since the electric heater uses electricity, the amount of electricity used is reduced by eliminating this heater. Further, since the temperature of the heat radiating tube cannot be freely adjusted, the amount of heat more than preventing sweating enters the cabinet, and the amount of load increases. For this reason, it has been necessary to prevent the occurrence of condensation without installing the heater and the heat radiating pipe.

  Therefore, as a result of diligent research and experiments, the inventors of the present application have found that in the conventional refrigerator, air around the front surface of the bottom of the refrigerator is stagnant, so that condensation occurs unless the heater or the radiator pipe is installed. I came to find out. In other words, the refrigerator bottom is provided with a refrigerator compartment or a freezer compartment above, and below is ambient air. For this reason, if the heater, the heat radiating pipe, or the like is not installed, condensation is likely to occur at the bottom of the refrigerator due to the temperature difference between the upper side and the lower side. And the air around the front part of the refrigerator bottom part is stagnating. For this reason, dew condensation occurs on the front part of the bottom of the refrigerator.

  Specifically, since the refrigerator disclosed in Patent Document 1 sucks air from the front of the refrigerator bottom, air flows in the front of the refrigerator bottom. However, since air is sucked from everywhere around the front of the refrigerator bottom, the sucked air does not have a flow rate enough to eliminate the retention of air around the front of the refrigerator bottom. If the air in the front part of the refrigerator bottom is stagnant, condensation occurs. For this reason, in the refrigerator currently disclosed by patent document 1, unless a heater, a heat radiating tube, etc. are installed, it cannot prevent that dew condensation generate | occur | produces in the front part of a refrigerator bottom part.

  Similarly, with respect to the refrigerator disclosed in Patent Document 2, air is sucked in from the left side of the front of the refrigerator bottom, but at this air flow rate, if a heater or a heat radiating tube is not installed, It is impossible to prevent condensation from occurring.

  Moreover, the refrigerator currently disclosed by patent document 2 discharges warm air from the right side of the front of a refrigerator bottom part. In other words, since the sucked air is blown toward the front part of the refrigerator bottom, it is possible to eliminate stagnation of air in the front part of the refrigerator bottom. However, since air flows through a high-temperature compressor, hot air is discharged from the front of the bottom of the refrigerator, so that hot air is blown to the feet of the user of the refrigerator, causing discomfort to the user. There is.

  Thus, in the conventional refrigerator, unless a heater, a heat radiating tube, or the like is installed, dew condensation occurs on the front portion of the bottom of the refrigerator, and the user of the refrigerator is uncomfortable with hot air.

  This invention solves the said conventional subject, and provides the refrigerator which can prevent that dew condensation generate | occur | produces in the front part of a refrigerator bottom part, without giving the refrigerator user the discomfort by warm air. For the purpose.

  In order to solve the above-described conventional problems, the refrigerator of the present invention is a refrigerator including an outer box, an inner box, and a heat insulating box made of a heat insulating material provided between the outer box and the inner box, Blower means for blowing the air outside the heat insulation box from the rear to the front of the bottom of the heat insulation box, and a compressor disposed outside the air passage through which the air is inserted. .

  Thereby, the air sucked from the back of the refrigerator is discharged from the front of the refrigerator. That is, since the sucked air is blown toward the front part of the refrigerator bottom part, the retention of air around the front part of the refrigerator bottom part can be eliminated. Therefore, the air around the front portion of the refrigerator bottom is not retained, and therefore, condensation can be prevented from occurring on the front portion of the refrigerator bottom.

  In addition, since the compressor is not disposed in the air path of the discharged air, the temperature of the air discharged from the front of the refrigerator bottom does not increase greatly. For this reason, the user of a refrigerator does not give the discomfort by warm air.

  The refrigerator of the present invention can provide a refrigerator capable of preventing the occurrence of condensation on the front surface of the bottom of the refrigerator without giving the refrigerator user unpleasant feeling due to warm air. The practical value is extremely high.

The invention according to claim 1 is a heat insulating box body including an outer box, an inner box, a heat insulating material provided between the outer box and the inner box, and air outside the heat insulating box body. Blower means for blowing air from the rear to the front of the bottom, a compressor disposed outside the air passage through which the air is inserted, and a rear portion of the bottom portion of the heat insulation box, the heat insulation An evaporating dish for storing and evaporating condensed water generated by a cooling cycle for cooling the inside of the box, and plate-like side walls extending in the front-rear direction at the bottom of the heat insulating box and forming both sides of the air path; , And has a first bottom on the rear side of the bottom of the heat insulation box and a second bottom lower than the first bottom on the front side, and the air sucked from the rear of the bottom of the heat insulation box, It is discharged from the front of the bottom of the heat insulation box so that it does not come to the side by the side wall. That. That is, since the sucked air is blown toward the front part of the refrigerator bottom part, the retention of air around the front part of the refrigerator bottom part can be eliminated. Therefore, the air around the front portion of the refrigerator bottom is not retained, and therefore, condensation can be prevented from occurring on the front portion of the refrigerator bottom.

In addition, since the compressor is not disposed in the air path of the discharged air, the temperature of the air discharged from the front of the refrigerator bottom does not increase greatly. For this reason, the user of a refrigerator does not give the discomfort by warm air. Moreover, it can prevent that the air ventilated by a refrigerator bottom part leaks to a side with a plate-shaped side wall. For this reason, since air can be efficiently blown to the front part of the bottom part of the refrigerator and the stay around the front part of the bottom part of the refrigerator can be eliminated, it is possible to prevent condensation from forming on the front part of the bottom part of the refrigerator. .

  The invention according to claim 2 is the invention according to claim 1, wherein the compressor is attached to the upper portion of the heat insulating box, so that the temperature of the high-temperature compressor is changed to the air sucked in the bottom of the refrigerator. The air is not transmitted and the air is not heated and discharged. For this reason, it is possible to prevent dew condensation from occurring on the front part of the bottom of the refrigerator without giving the refrigerator user an unpleasant feeling due to the warm air.

  The invention according to claim 3 is the invention according to claim 1, further comprising a plurality of storage chambers, and the storage chamber disposed at the lowermost of the storage chambers has the highest set temperature, By disposing the storage room with the highest set temperature at the lowermost part, the difference in temperature between the upper part and the lower part of the front part of the bottom of the refrigerator where condensation is likely to occur can be reduced. For this reason, even if the flow velocity of the wind which flows around the front part vicinity of a refrigerator bottom part is small, it can prevent that dew condensation generate | occur | produces in the front part of a refrigerator bottom part. Moreover, since the flow rate of the air discharged from the bottom of the refrigerator can be reduced, the user of the refrigerator is not given discomfort due to warm air.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, a high-temperature pipe on a high-temperature side of a cooling cycle for cooling the inside of the heat insulating box is disposed in the air passage so that a high temperature is obtained. The air blown at the bottom of the refrigerator is heated by the piping. Thereby, since the front part of a refrigerator bottom part can be warmed, even if the flow velocity of the wind which flows through the front part periphery of a refrigerator bottom part is small, it can prevent that dew condensation generate | occur | produces in the front part of a refrigerator bottom part.

  Moreover, the temperature of the discharged air can be controlled to a temperature that does not cause discomfort to the user by adjusting the length of the high-temperature pipe to be arranged. For this reason, since the flow velocity of the air discharged from the refrigerator bottom part can be made small and the temperature of the said air can also be controlled, the discomfort by a warm air is not given to the user of a refrigerator.

  The invention according to claim 5 is the invention according to claim 4, wherein the high-temperature pipe is arranged below the bottom surface portion of the heat insulation box and also in the front center, so that the center of the front portion of the refrigerator bottom portion is provided. The temperature of the part tends to decrease and condensation tends to occur, but the temperature of the air toward the central part can be increased. Thereby, since the front part of a refrigerator bottom part can be warmed, even if the flow velocity of the wind which flows through the front part periphery of a refrigerator bottom part is small, it can prevent that dew condensation generate | occur | produces in the front part of a refrigerator bottom part.

  Moreover, the temperature of the discharged air can be controlled to a temperature that does not cause discomfort to the user by adjusting the length of the high-temperature pipe to be arranged. For this reason, since the flow velocity of the air discharged from the refrigerator bottom part can be made small and the temperature of the said air can also be controlled, the discomfort by a warm air is not given to the user of a refrigerator.

  A sixth aspect of the present invention is the first aspect of the present invention, wherein the front plate forming the front portion of the bottom of the heat insulation box and the lowermost surface of the heat insulation box are provided to form the air passage. The bottom plate is integrally formed so that the front plate on the front surface of the bottom of the refrigerator and the bottom plate on the bottom of the heat insulating box that transmit heat are integrally formed. Heat is easily transferred to the front part of the bottom. For this reason, even if the flow velocity of the wind which flows around the front part vicinity of a refrigerator bottom part is small, it can prevent that dew condensation generate | occur | produces in the front part of a refrigerator bottom part. Moreover, since the flow rate of the air discharged from the bottom of the refrigerator can be reduced, the user of the refrigerator is not given discomfort due to warm air.

  The invention according to claim 7 is the invention according to claim 1, wherein the front plate forming the front portion of the bottom of the heat insulation box, and the high temperature on the high temperature side of the cooling cycle provided on the side wall of the heat insulation box. Since the heat is transferred to the front part of the refrigerator bottom by the heat conductive member by joining the pipe with the heat conductive member, the flow velocity of the wind flowing around the front part of the refrigerator bottom Even if it is small, it can prevent that dew condensation generate | occur | produces on the front part of a refrigerator bottom part. Moreover, since the flow rate of the air discharged from the bottom of the refrigerator can be reduced, the user of the refrigerator is not given discomfort due to warm air.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the conventional example or the embodiments described above, and detailed descriptions thereof will be omitted. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a front view of the refrigerator according to Embodiment 1 of the present invention.

  As shown in FIG. 1, a refrigerator 100 according to the present embodiment is a refrigerator 100 having a double-spread door at the top, and in a heat insulating box 101 that separates the inside and the outside of the refrigerator 100 in a heat insulating state. A storage compartment divided into a plurality of compartments is provided.

  The storage compartment divided into a plurality of the refrigerator 100 has a first refrigeration chamber 102, an ice making chamber 105, a switching chamber 106 in which the temperature inside the refrigerator can be changed, a second refrigeration chamber 103, and a freezer. It may be referred to as distinguished from the chamber 104 or the like.

  The front opening of the first refrigerator compartment 102 located at the top of the refrigerator 100 is provided with a rotary heat insulating door 107 filled with foam heat insulating material such as urethane to form a shelf-shaped storage space. Yes.

  Further, the ice making chamber 105, the switching chamber 106, the second refrigeration chamber 103, and the freezing chamber 104 disposed below the first refrigeration chamber 102 are drawer-type storage spaces. Each drawer is provided with a heat insulating plate 108 as a front plate, thereby sealing the storage chamber so as not to leak cold air.

  The heat insulating box 101 is a rectangular parallelepiped box that is formed by filling a heat insulating material such as hard foam urethane between a metal outer box and a resin inner box. The heat insulating box 101 has a function of blocking heat that tends to flow into the heat insulating box 101 from the outside atmosphere (atmosphere).

  The second refrigerating room 103 as a refrigerating room is a storage room which is arranged at the lowermost part of the heat insulating box 101 and is maintained at a low temperature so that the contents are not frozen mainly for the purpose of refrigerating vegetables. ing. Moreover, the 2nd refrigerator compartment 103 is set as the highest temperature setting in a store room. As a minimum of specific temperature, it is 0 to 7 degreeC, Preferably it is 2 to 7 degreeC, More preferably, it is 5 to 7 degreeC. In addition, the 2nd refrigerator compartment 103 may be set to 8 degreeC-15 degreeC as a preservation | save room | chamber of the seasoning and vegetables, fruits, etc. which are products of a warm region for the purpose of providing the storage space as what is called a cool dark place. .

  FIG. 2 is a perspective view showing the refrigerator according to the first embodiment of the present invention from the back side.

  As shown in FIG. 2, a recess is formed in the upper part of the refrigerator 100 so as to form a downward step shape toward the back of the refrigerator 100, and the first machine chamber 200 is formed in the recess. Yes. In other words, the first machine room 200 is formed in a state of being bitten into the uppermost rear region outside the heat insulating box 101.

  The first machine chamber 200 is a space that mainly stores the compressor 201 and a fan (not shown) for cooling the compressor 201, as well as components on the high-pressure side of the cooling cycle.

  The compressor 201 is one of components that form a cooling cycle, and is a device that can compress a refrigerant. The compressor 201 is placed on a vibration-proof rubber (not shown) and attached to the first machine chamber 200.

  In addition, a groove-like recess that opens in the back direction is formed in the lower portion of the refrigerator 100, and the second machine chamber 300 is formed in the recess. That is, the second machine room 300 is formed in a state where it has digged into the lowermost rear region outside the heat insulation box 101.

  Here, conventionally, one machine room is generally provided in the rear region of the lowermost storage room of the heat insulating box 101. For this reason, the mode in which the machine room is divided into the first machine room 200 and the second machine room 300 significantly improves the capacity of the lowermost storage room of the second refrigeration room 103 compared to the conventional refrigerator. In addition, since a dead space that is difficult to reach at the top of the first refrigerator compartment 102 can be used as the first machine room 200, the actual capacity of the refrigerator 100 can be improved.

  Normally, the first machine room 200 and the second machine room 300 are covered with a cover (not shown) to prevent noise.

  FIG. 3 is a perspective view showing the second machine room of the refrigerator in the first embodiment of the present invention.

  As shown in FIG. 3, an evaporating dish 301 is disposed at the bottom of the second machine chamber 300. The evaporating dish 301 is provided with a blowing means 324.

  The evaporating dish 301 is one of the components that form a cooling cycle, and is a device that stores and evaporates condensed water generated by the cooling cycle. A heating tube 325 for storing and evaporating this condensed water is disposed on the evaporating dish 301.

  The heating pipe 325 is a pipe arranged so as to be placed on the lowest part of the evaporating dish 301, through which a high-temperature refrigerant pumped from the compressor 201 passes. Since the heating pipe 325 constitutes a part of the cooling cycle and is immersed in the condensed water stored in the evaporating dish 301 and comes into contact with the condensed water, it is desirable to perform a rust prevention treatment. Further, unlike other cooling cycle components, only the heating tube 325 may be made of a material having high water resistance, such as stainless steel. The heating pipe 325 is included in the “high temperature piping” described in the claims. In addition, the heating pipe 325 can provide appropriate heating by using a high-temperature pipe at a condensing intermediate portion without using a pipe immediately after discharge of the compressor 201.

  The air blowing means 324 is a fan having a function of forcibly blowing air to the evaporating dish 301 and promoting evaporation of condensed water on the evaporating dish 301. In other words, the evaporation efficiency is hindered by the moisture evaporated from the evaporation tray 301 and staying above the evaporation tray 301, but the humidity above the evaporation tray 301 is forcibly excluded by the blowing means 324. Can be reduced to promote evaporation. In addition, since the ventilation means 324 is attached exclusively for evaporation promotion, it is attached at a position where the above effect can be sufficiently exerted.

  FIG. 4 is a cross-sectional view showing only the lower part of the refrigerator in the first embodiment of the present invention.

  As shown in FIG. 4, the heat insulating box 101 includes a first bottom portion 321 on the back side and a second bottom portion 322 on the near side, and an inner box 303 is provided inside the heat insulating box body 101. .

  The first bottom portion 321 is a part of the heat insulating box body 101 that is arranged along the horizontal plane across the entire width direction of the refrigerator 100 on the bottom side of the refrigerator 100.

  The second bottom portion 322 is a part of the heat insulating box 101 that is disposed along the horizontal plane across the entire width direction of the refrigerator 100 on the front side of the bottom of the refrigerator 100.

  And the bottom part 302 of the heat insulation box 101 is comprised by the 1st bottom part 321 and the 2nd bottom part 322. As shown in FIG. A bottom surface portion 331 is provided on the bottom surface of the bottom portion 302, and a front surface portion 332 is provided on the front side.

  That is, the bottom surface portion 331 and the front surface portion 332 are part of the outer box constituting the heat insulating box body 101. The bottom surface portion 331 is a metal plate provided on the lowermost surface of the heat insulating box 101. The front portion 332 is a metal plate that forms the front portion of the bottom portion 302 of the heat insulating box 101.

  The bottom surface portion 331 and the front surface portion 332 are integrally formed. The bottom surface portion 331 corresponds to a “bottom plate” described in the claims, and the front surface portion 332 corresponds to a “front plate” described in the claims.

  Further, the inner box 303 is a box that is drawn out following the heat insulating plate 108 that is a front plate of the drawer, and accommodates an object to be accommodated such as a large plastic bottle containing vegetables and drinking water inside. This is a box.

  Next, a description will be given of the occurrence of condensation in the front part at the bottom of the refrigerator 100 and a configuration for preventing it.

  As shown in FIG. 4, the bottom portion 302 of the heat insulating box 101 is provided with the second refrigerating chamber 103 having a low temperature on the upper side, and the lower side is ambient air. For this reason, dew condensation is likely to occur on the front surface portion 332 due to this temperature difference. In particular, when the air around the front surface portion 332 shown in FIG.

  Here, the air sucked from the back surface of the lower portion of the refrigerator 100 is discharged from the front surface of the lower portion of the refrigerator 100 according to the air paths W1 and W2 shown in FIG. That is, the air sucked from the rear of the lower part of the refrigerator is blown forward toward the front surface portion 332. In particular, the central portion of the front portion 332 has low heat conduction from the side surface, so that the temperature is likely to decrease and condensation tends to occur. However, the air blowing means 324 blows air toward the central portion of the front portion 332, so You can blow air into.

  Therefore, when this air is blown to the periphery F of the front surface portion 332, the air in the periphery F of the front surface portion 332 does not stay and it is possible to prevent dew condensation on the front surface portion 332. In addition, the flow rate of the air blown by the blowing unit 324 is set to a flow rate that does not cause discomfort to the user of the refrigerator 100.

  The compressor 201 is attached to the upper part of the refrigerator 100. For this reason, since the compressor 201 is not disposed in the air paths W1 and W2 of the air blown by the blower 324, the temperature of the air discharged from the front of the lower portion of the refrigerator 100 does not increase greatly. In particular, the temperature of the high-temperature compressor 201 is not transmitted to the air blown by the blower 324, and the air is not heated and discharged. For this reason, the user of the refrigerator 100 is not given discomfort due to warm air.

  Even when the compressor 201 is not disposed in the air passages W1 and W2, if the compressor 201 is attached to the lower part of the refrigerator 100, the noise of the compressor 201 is air blown by the blower 324. May be transmitted to the front surface of the refrigerator 100. For this reason, it is possible to prevent the noise of the compressor 201 from being transmitted to the front surface of the refrigerator 100 by attaching the compressor 201 to the upper portion of the refrigerator 100.

  Moreover, since the temperature of the compressor 201 rises when the load of the refrigerator 100 is high, when the compressor 201 is attached to the lower part of the refrigerator 100, the temperature of the lower part of the refrigerator 100 rises and the load of the refrigerator 100 is increased. It gets even higher. For this reason, by attaching the compressor 201 to the upper part of the refrigerator 100, when the load of the refrigerator 100 is high, it can prevent that the load of the refrigerator 100 becomes still higher.

  In this manner, it is possible to prevent condensation on the front surface portion 332 while suppressing the load on the refrigerator 100 while suppressing noise.

  Further, the sucked air is blown to the periphery F of the front surface portion 332, so that dust attached to the periphery F of the front surface portion 332 can be eliminated.

  Moreover, the 2nd refrigerator compartment 103 arrange | positioned above the front-surface part 332 is a vegetable room with the highest preset temperature in a storage room. For this reason, the difference of the temperature of the upper part of the front part 332 which tends to generate | occur | produce condensation and the downward direction can be made small. Therefore, even if the flow velocity of the wind flowing around the front F part 332 is small, it is possible to prevent condensation on the front part 332. Moreover, since the flow velocity of the air discharged from the lower part of the refrigerator 100 can be reduced, the user of the refrigerator 100 is not given discomfort due to warm air.

  Further, the bottom surface portion 331 and the front surface portion 332 of the heat insulating box body 101 are integrally formed. Here, the bottom surface portion 331 is a metal plate that forms the air paths W1 and W2 and transmits heat. That is, since the bottom surface portion 331 and the front surface portion 332 that transmit heat to the front surface portion 332 are integrally formed, heat is easily transmitted to the front surface portion 332. For this reason, even if the flow velocity of the wind flowing around the front F part 332 is small, it is possible to prevent dew condensation from occurring on the front part 332. Moreover, since the flow velocity of the air discharged from the lower part of the refrigerator 100 can be reduced, the user of the refrigerator 100 is not given discomfort due to warm air.

  FIG. 5 is a diagram for explaining a configuration of a heating tube arranged on the evaporating dish of the refrigerator in the first embodiment of the present invention.

  As shown in FIG. 5, the heating tube 325 includes a heating tube side portion 325a and a heating tube front portion 325b. That is, the heating tube side portion 325 a and the heating tube front portion 325 b are connected to constitute a part of the heating tube 325.

  The heating tube side portion 325a is disposed in the air path of the air blown by the blowing means 324. Specifically, the heating tube side portion 325a is arranged in the vicinity of the front side of the refrigerator of the air blowing means 324.

  The heating tube front portion 325b is disposed below the bottom surface portion 331 of the heat insulation box 101 and at the front center. Specifically, the heating tube front portion 325b is a pipe that extends the central portion of the evaporating dish 301 from the refrigerator back side to the refrigerator front side. The evaporating dish 301 includes a receiving portion 301a that protrudes toward the front of the refrigerator in order to place the heating tube front portion 325b.

  The air blown by the blowing means 324 is heated by the heating tube side portion 325a and the heating tube front portion 325b of the heating tube 325. In addition, the temperature rise of the air discharged from the refrigerator 100 lower part is controllable by adjusting the position and length of the heating pipe side part 325a and the heating pipe front part 325b. Here, in the heating tube side portion 325a and the heating tube front portion 325b, the rising temperature of the air discharged from the lower portion of the refrigerator 100 is set to 2 degrees or less as the rising temperature that does not cause discomfort to the user of the refrigerator 100. Is arranged.

  In addition, although the temperature of the central portion of the front surface portion 332 is likely to decrease and condensation tends to occur, the temperature of the air toward the central portion can be increased by the heating tube front portion 325b.

  Therefore, by arranging the heating tube side portion 325a and the heating tube front portion 325b, the front surface portion 332 can be actively heated, and the front surface portion 332 can be obtained even if the flow velocity of the wind flowing around the front surface 332 is small. It is possible to prevent dew condensation from occurring.

  That is, the temperature of the front surface portion 332 is raised by giving a minimum amount of heat to the air in accordance with the front center portion where the temperature tends to decrease.

  In addition, by adjusting the length of the heating tube side portion 325a and the heating tube front portion 325b of the heating tube 325 to be arranged, the temperature of the discharged air can be controlled to a temperature that does not cause discomfort to the user. it can. For this reason, since the flow velocity of the air discharged from the bottom part of the refrigerator 100 can be reduced and the temperature of the air can be controlled, the user of the refrigerator 100 is not given discomfort due to warm air.

  FIG. 6 is a perspective view showing the refrigerator according to Embodiment 1 of the present invention from below.

  As shown in FIG. 6, a plate-like side wall 401 is disposed on the bottom surface of the refrigerator 100. Specifically, the side wall 401 protrudes downward from the front portion of the bottom surface portion 331 of the heat insulation box 101 and the bottom surface portion of the evaporating dish 301 and extends in the front-rear direction of the heat insulation box body 101. It is. In addition, two side walls 401 are arranged in total, one on each of the left and right sides of the bottom surface of the refrigerator 100. The side wall 401 is a soft member, for example, rubber.

  The side wall 401 forms both sides of the air path of the air blown by the blowing means 324, and prevents the air from leaking to the side of the refrigerator. For this reason, since air can be efficiently blown to the front surface part 332 and the stay of the periphery F of the front surface part 332 can be eliminated, it is possible to prevent dew condensation from occurring on the front surface part 332.

  In this embodiment, the side wall 401 extends parallel to the front-rear direction of the heat insulation box. However, the side wall 401 is shaped like a letter C in accordance with the front center part where the temperature is likely to decrease. The wind may be actively sent to the front center so as not to cause discomfort.

  FIG. 7 is a diagram illustrating a member that transfers heat to front surface portion 332 of bottom portion 302 of the refrigerator according to Embodiment 1 of the present invention. In FIG. 7, for convenience of explanation, parts other than the front surface portion 332 and the heating tube 325 are omitted.

  As shown in FIG. 7, the front surface portion 332 and the heating tube 325 are joined by a thermally conductive member A. For this reason, since the heat of the heating tube 325 is transmitted to the front surface portion 332 by this member A, it is possible to prevent condensation on the front surface portion 332 even when the flow velocity of the wind flowing around the front surface 332 is small. can do. Moreover, since the flow velocity of the air discharged from the lower part of the refrigerator 100 can be reduced, the user of the refrigerator 100 is not given discomfort due to warm air.

  The member A may be any member as long as it is thermally conductive, for example, hot melt or aluminum tape.

  As described above, according to the present invention, it is possible to prevent dew condensation from occurring on the front surface portion 332 without causing the user of the refrigerator 100 to feel uncomfortable with hot air.

  In addition, a sensor that detects an outside air temperature is provided, and a control unit that controls the operation of the air blowing unit 324 with a predetermined setting according to the detected outside air temperature is provided. The predetermined setting is a setting that increases the operating time when the outdoor temperature is high, assuming that there is a lot of humidity in the summer, and assumes a dry condition in winter when the outdoor temperature is low. Energy saving is improved by setting to shorten the operation time.

  Moreover, the sensor which detects the internal temperature of the 2nd refrigerator compartment 103 is provided, and the control means which controls the driving | operation of the ventilation means 324 by predetermined setting according to the detected internal temperature is provided. The predetermined setting is a setting in which the operating time is shortened because the temperature difference between the upper part and the lower part of the front part is small when the internal temperature is high, and the upper part of the front part when the internal temperature is low. Since the temperature difference below and is large, the operation time is set longer and energy saving is improved.

  Moreover, the control apparatus which controls the operation | movement of the ventilation means 324 with a predetermined | prescribed setting according to the adjusted internal temperature is provided with the adjusting device which can set the temperature of the 2nd refrigerator compartment 103 by the user. If the temperature setting of the regulator is high, the temperature difference is small so that the operation time is shortened.If the temperature setting of the regulator is low, the temperature difference is large, so the operation time is long. Energy saving is improved.

  Further, at least a part of the air is blown while the flow of the cold air in the second refrigerating chamber 103 is stopped by the operation of the air blowing means and the cold air circulation control means, and the heat conduction from the second refrigerating chamber 103 is reduced. Energy savings are improved by stopping the means 324.

  As mentioned above, although the refrigerator concerning this invention was demonstrated using the said embodiment, this invention is not limited to this.

  That is, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  For example, in the present embodiment, the compressor 201 is attached to the upper part of the refrigerator 100, but the compressor 201 is the lower part of the refrigerator 100 and the air path W1 of the air blown by the blower 324. And may be arranged outside W2. For example, air for cooling the compressor 201 is sucked in from the back of the refrigerator, inserted through an air path different from the air paths W1 and W2, and discharged to the back of the refrigerator by another blowing means. Thereby, the user of a refrigerator does not give the discomfort by warm air.

  Moreover, the air for cooling the compressor 201 is sucked in from the back of the refrigerator, branched into the air passages W1 and W2 and another air passage, and after cooling the compressor 201, the air is discharged to the back of the refrigerator. Thereby, the user of a refrigerator does not give the discomfort by warm air.

  As described above, the refrigerator according to the present invention can prevent the occurrence of dew condensation on the front part of the refrigerator bottom without causing discomfort due to warm air to the user of the refrigerator. It can be applied to refrigerators of various sizes such as for commercial use.

Front view of the refrigerator in Embodiment 1 of the present invention The perspective view which shows the refrigerator in Embodiment 1 of this invention from a back surface The perspective view which shows the 2nd machine room of the refrigerator in Embodiment 1 of this invention. Sectional drawing which shows only the lower part of the refrigerator in Embodiment 1 of this invention The figure for demonstrating the structure of the heating pipe arrange | positioned on the evaporating dish of the refrigerator in Embodiment 1 of this invention. The perspective view which shows the refrigerator in Embodiment 1 of this invention from the downward direction The figure explaining the member which transmits heat to the front part of the bottom part of the refrigerator in Embodiment 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Refrigerator 101 Heat insulation box 102 1st refrigerator compartment 103 2nd refrigerator compartment 104 Freezer compartment 105 Ice making room 106 Switching room 107 Heat insulation door 108 Heat insulation board 200 1st machine room 201 Compressor 300 2nd machine room 301 Evaporating dish 302 Bottom part 321 1st bottom part 322 2nd bottom part 324 Blowing means 325 Heating pipe (high temperature piping)
331 Bottom (bottom plate)
332 Front (front plate)
401 Side wall A Thermally conductive member

Claims (7)

A heat insulating box made of an outer box, an inner box, and a heat insulating material provided between the outer box and the inner box, and air outside the heat insulating box from the rear to the front of the bottom of the heat insulating box By the cooling cycle which cools the inside of the heat insulation box, it is arranged under the rear part of the bottom part of the bottom of the heat insulation box, the air blower which blows, the compressor arranged outside the air passage through which the air is inserted An evaporating dish that stores and evaporates the generated condensed water, and plate-like side walls that extend in the front-rear direction at the bottom of the heat insulating box and form both sides of the air passage, It has a first bottom part on the rear side of the bottom part and a second bottom part lower than the first bottom part on the front side, and the air sucked from the rear part of the bottom part of the heat insulation box is not laterally moved by the side wall. Thus, the refrigerator discharged from the bottom part of the heat insulation box body .   The refrigerator according to claim 1, wherein the compressor is attached to an upper portion of the heat insulating box.   The refrigerator according to claim 1, further comprising a plurality of storage rooms, wherein a storage room arranged at a lowermost part of the storage rooms has a highest set temperature.   Furthermore, the high temperature piping of the high temperature side of the cooling cycle which cools the said heat insulation box inside is arrange | positioned in the said air path.   The refrigerator according to claim 4, wherein the high-temperature pipe is disposed below and at the front center of the bottom surface portion of the heat insulating box.   The refrigerator according to claim 1, wherein the front plate forming the front portion of the bottom portion of the heat insulating box and the bottom plate provided on the lowermost surface of the heat insulating box and forming the air passage are integrally formed.   The front plate which forms the front part of the bottom part of the said heat insulation box, and the high temperature piping of the high temperature side of the cooling cycle provided in the side wall of the said heat insulation box are joined by a heat conductive member. Refrigerator.