JP2008039240A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive refrigerator capable of ensuring reliability and safety, in a refrigerator provided with an automatic icemaker. <P>SOLUTION: The water supply pipe 206 of the automatic icemaker partitioned by a partitioning wall 104, and arranged below a refrigerating room 102 and above a freezing compartment 103, is arranged below a water supply tank 201. To enable the water supply pipe 206 to be mounted and demounted, the part of the partitioning wall 104 above the water supply pipe is constituted of a heat insulating member 207 made from foam material, and an inexpensive resin is used as materials for the water supply pipe 206. Since resin material has electric insulation, even though the resin material is directly attached to the water supply pipe, the resin material can be surely insulated from an antifreezing heater, and safety can be ensured. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a refrigerator provided with an automatic ice making device.

  Conventionally, in this type of refrigerator, a heater is disposed at the lower portion of the water supply tank for preventing freezing of the water supply tank and the water in the water supply tank placed on the partition wall between the refrigerator compartment and the freezer compartment (for example, Patent Documents). 1, see Patent Document 2).

  FIG. 7 is a cross-sectional view of a conventional automatic ice making device described in Patent Document 1, and FIG. 8 is a cross-sectional view of a configuration of a water supply pipe and a freeze prevention heater described in Patent Document 2.

  In FIG. 7, a freezer compartment 702 is provided at the lower part of the refrigerator compartment 701 and the refrigerator compartment 701. Between the refrigerator compartment 701 and the freezer compartment 702, foaming is performed as a heat insulating material due to the ease of assembly and the fluidity of urethane. A partition wall 703 in which a material is incorporated is provided. A water supply tank 704 for storing water and a member for supplying the water to the freezer compartment 702 side are provided on the upper part of the partition wall 703. The water supply tank 704 is a tank for changing water, has a structure that can be freely inserted into and removed from the refrigerator compartment 701, and has a suction pipe portion 705 for supplying water in the water supply tank 704. A member for supplying water to the freezing chamber 702 side includes a water supply pump 706 for sucking up water from the inside of the water supply tank 704 and a pipe joint member 707 for connecting the suction pipe portion 705 of the water supply tank 704. A water supply pipe 709 leading to the water supply pump 706 and the ice tray 708 is disposed on the side through a partition wall 703 from the back side of the water supply pump 706. The heat insulating member 710 is covered. On the other hand, on the freezer compartment 702 side, an ice tray 708 for making ice and temperature detecting means 711 for detecting the temperature in the ice tray 708 are configured. An ice removing motor 712 for rotating the ice tray 708 is disposed, and an ice tray 713 for receiving the formed ice is disposed below the ice tray 708. In the above configuration, the water stored in the water supply tank 704 is sucked up by the water supply pump 706, passes through the suction pipe portion 705 and the pipe joint member 706, passes through the water supply pump 706, passes through the water supply pipe 709, and is fixed to the ice tray 708. A quantity of water is supplied. The ice tray 708 detects that the ice has been purified when the temperature of the ice tray 708 falls below a certain temperature by the temperature detection means 711 that detects the temperature in the ice tray 708, and the ice tray 711 is rotated and deiced by the ice-breaking motor 712. It is a mechanism for dropping ice into the ice tray 713.

  Next, a configuration cross-sectional view of a conventional water supply pipe and a freeze prevention heater will be described with reference to FIG.

The water supply pipe 709 is made of a metal material 801, the surface is covered with an insulating material 802, a freeze prevention heater 803 is attached to the outer periphery, and the water supply pipe 709 and the freeze prevention heater 803 are electrically insulated. It has become. The anti-freezing heater 803 is energized appropriately so that water or the like does not freeze in the water supply pipe 709 when in the mode of using automatic ice making.
Japanese Patent Laid-Open No. 11-83271 JP-A-6-26745

  However, in the above conventional configuration, the material of the water supply pipe 709 is composed of an expensive metal material 801, and an insulating material 802 is required between the anti-freezing heater 803 and the water supply pipe 709, which makes the specification very expensive. It becomes. That is, the user has a problem of increasing the cost burden.

  The present invention solves the above-mentioned conventional problems. The material of the water supply pipe is good moldability and uses an inexpensive resin, and since the resin material is electrically insulating, it is directly attached to the water supply pipe. Another object of the present invention is to provide a refrigerator equipped with an automatic ice making device that secures insulation with a freeze prevention heater, ensures safety, and ensures the temperature of the water supply pipe tip to the freeze prevention temperature.

  In order to solve the above-described conventional problems, the refrigerator of the present invention is partitioned by a partition wall, the refrigerator compartment is disposed at the top, the freezer compartment is disposed at the bottom, and a water supply tank placed on the bottom surface of the refrigerator compartment; The ice tray provided in the freezer compartment, a water supply pump for introducing water from the water supply tank to the ice tray, and a water supply pipe are provided. The water supply pipe is made of a resin material, and the surface has anti-freezing for preventing freezing. A heater is disposed inside the partition wall, the water supply pipe is disposed at a lower portion of the water supply tank, and the water supply pipe upper portion of the partition wall is made of foam material so that the water supply pipe can be attached and detached. It is comprised with the heat insulation member comprised by.

  As a result, the water supply pipe material uses inexpensive resin, and the resin material is electrically insulative, so even if affixed directly to the water supply pipe, the antifreeze heater and insulation should be secured to ensure safety. I can do it.

  In the refrigerator of the present invention, the material of the water supply pipe has good moldability, uses inexpensive resin, and the resin material is electrically insulating, so even if it is attached directly to the water supply pipe, it ensures insulation from the antifreeze heater Thus, safety can be ensured, and the temperature of the tip of the water supply pipe can be secured up to the freezing prevention temperature.

  The invention according to claim 1 is partitioned by a partition wall, the refrigerating chamber is disposed in the upper portion, the freezing chamber is disposed in the lower portion, the water supply tank placed on the lower surface of the refrigerating chamber, and the freezing chamber An ice tray, a water supply pump for guiding water from the water tank to the ice tray, and a water pipe are provided. The water pipe is made of a resin material, and a freezing prevention heater for preventing freezing is formed inside the partition wall on the surface. The water supply pipe is disposed at a lower portion of the water supply tank, and the upper portion of the water supply pipe of the partition wall is made of a foam material so that the water supply pipe can be attached and detached. The water supply pipe is made of an inexpensive resin, and the resin material is electrically insulating. Ensure sex Can.

  According to a second aspect of the present invention, in the first aspect of the present invention, a rib is formed in the vicinity of the water supply pipe tip position on the freezer compartment side of the partition wall, and the antifreeze heater up to the water supply pipe tip limit. Therefore, the reliability of the freeze prevention can be further improved.

  According to a third aspect of the present invention, in the first aspect of the present invention, a rib is formed on the partition wall so that the discharged cold air does not directly hit the tip of the water supply pipe in the internal circulation air passage of the freezer compartment. As a result, the tip temperature of the water supply pipe can be further increased, so that the reliability of freeze prevention can be further improved.

  The invention according to claim 4 is the invention according to claim 1, wherein an insulating material is attached to a terminal portion of the antifreeze heater at the tip of the water supply pipe in the structure of the water supply pipe and the antifreeze heater, By sticking the metal material to the surface of the insulating material up to the position of the water supply pipe tip, the temperature of the water supply pipe tip can be further increased, so that the reliability of freeze prevention can be further improved.

  The invention according to claim 5 is the invention according to claim 4, wherein the insulating material is a heat-shrinkable tube, thereby ensuring insulation from the anti-freezing heater, ensuring anti-freezing reliability, and Workability can be improved.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, a rib is formed in the vicinity of the water supply pipe tip position on the freezer compartment side of the partition wall, and in the internal circulation air passage of the freezer compartment By forming ribs on the partition wall so that the discharged cold air does not directly hit the tip of the water supply pipe, insulation with the anti-freezing heater is ensured, reliability of anti-freezing is further ensured, and workability is improved. Can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

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

  In FIG. 1, a refrigerator main body 101 is partitioned by a partition wall 104 into a refrigeration chamber 102 disposed at an upper portion and a freezing chamber 103 disposed at a lower portion, and the refrigeration chamber 102 is directly cooled by natural convection of cold air. This is a room to be cooled, and an evaporator 106 is disposed on the inner surface of the inner box 105. The freezer compartment 103 is an indirect cooling method using a blower 107, and the evaporator 108 is disposed on the inner surface of a duct 109 for constructing an air passage. Reference numeral 110 denotes an automatic ice making unit.

  2A is a cross-sectional view of the automatic ice making device according to Embodiment 1 of the present invention, and FIG. 2B is a cross-sectional view taken along the line AB of FIG. 2A.

  In FIG. 2, a water supply tank 201 for storing water and a member for supplying the water to the freezer compartment 103 side are provided on the partition wall 104. The water supply tank 201 is a tank that changes water, has a structure that can be freely inserted into and removed from the refrigerator compartment 102, and has a suction pipe portion 202 for supplying water in the water supply tank 201. A member for supplying water to the freezer compartment 103 side is constituted by a water supply pump 203 for sucking up water from the inside of the water supply tank 201 and a pipe joint member 204 that connects the suction pipe portion 202 of the water supply tank 201. A water supply pipe 206 that leads to the water supply pump 203 and the ice tray 205 is disposed on the side through the partition wall 104 from the back side of the water supply pump 203, and a heat insulating member 207 that insulates the water supply pipe 206 is covered on the water supply pipe 206. It has a configuration.

  Further, the material of the water supply pipe 206 is made of a resin material, and a freezing prevention heater 211 is directly formed on the surface. The freezing prevention heater 211 can also be touched by a human hand from the refrigerator compartment 102 side or the freezer compartment 103 side. It is arranged at a position where it can not be. Further, the freeze prevention heater 211 can cut the cool air transferred from the freezer compartment 103 to the surface of the water supply pipe 206 and the air, and also prevents the surface water condensation of the water supply pipe 206 on the refrigerator compartment 102 side and frost formation. ing. On the other hand, on the freezer compartment 103 side, an ice tray 205 for making ice and a temperature detecting means 208 for detecting the temperature in the ice tray 205 are configured. An ice removing motor 209 for rotating the ice tray 205 is disposed, and an ice tray 210 for receiving the formed ice is disposed below the ice tray 205. The operation and action of the above configuration will be described below.

  Water stored in the water supply tank 201 is sucked up by the water supply pump 203, passes through the suction pipe portion 202 and the pipe joint member 204, passes through the water supply pump 203, passes through the water supply pipe 206, and is supplied to the ice tray 205 by a certain amount. The ice tray 205 detects that the ice has been purified when the temperature is below a certain temperature by the temperature detection means 208 that detects the temperature in the ice tray 205, and the ice tray 205 is rotated and deiced by the ice removing motor 209. It is a mechanism for dropping ice into the ice tray 210.

  As described above, in the present embodiment, the refrigeration room and the freezing room or the ice making room are provided. A water supply tank that is divided by the partition wall and placed on the partition wall, an ice tray that is disposed in the freezer compartment, a water supply pump that guides water from the water tank to the ice tray, and a water supply pipe are disposed. Further, an evaporator for cooling the inside of the freezer compartment, a circulation fan, and an air duct are configured, and the air duct is an air path that promotes cooling of the ice tray. The water supply pipe is made of a resin material, and on the surface, an anti-freezing heater for preventing freezing is arranged inside the partition wall, and the outside cannot contact the anti-freezing heater. It has become. The water supply pipe is arranged at the lower part of the water supply tank, and the upper part of the water supply pipe of the partition wall is made of a heat insulating member made of foam material so that the water supply pipe can be attached and detached, and the material of the water supply pipe is an inexpensive resin In addition, since the resin material is electrically insulative, it is possible to ensure the safety with the anti-freezing heater even if it is directly attached to the water supply pipe.

(Embodiment 2)
FIG. 3A is a cross-sectional view of the automatic ice making device according to Embodiment 2 of the present invention, and FIG. 3B is a cross-sectional view taken along the line AB of FIG.

  A difference from the first embodiment is that the rib 301 is formed near the tip of the water supply pipe 302 on the freezing chamber side of the partition wall 303, and the antifreeze heater 304 can be extended to the limit of the water supply pipe tip.

  As described above, in the present embodiment, the rib 301 is formed near the tip of the water supply pipe 302 on the freezing chamber side of the partition wall 303, and the antifreeze heater 304 is extended to the limit of the water supply pipe tip, thereby Since the temperature can be raised, the reliability of freeze prevention can be further improved.

(Embodiment 3)
4A is a cross-sectional view of the automatic ice making device according to Embodiment 3 of the present invention, and FIG. 4B is a cross-sectional view taken along the line AB of FIG. 4A.

  A difference from the first embodiment is that ribs 401 are formed on the partition wall 403 so that the discharged cold air does not directly hit the tip of the water supply pipe 402 in the internal circulation air path 404 of the freezer compartment.

  As described above, in the present embodiment, the rib 401 is formed on the partition wall 403 so that the discharged cool air does not directly hit the tip of the water supply pipe 402 in the internal circulation air path 404 of the freezer compartment. Since the tip temperature of the water supply pipe can be further increased, the reliability of freeze prevention can be further improved.

(Embodiment 4)
FIG. 5A is a cross-sectional view of the automatic ice making device according to Embodiment 4 of the present invention, and FIG. 5B is a cross-sectional view taken along the line AB of FIG. 5A.

  The difference from the first embodiment is that the insulating material 501 is attached to the end of the antifreezing heater 504 at the tip of the water supply pipe in the configuration of the water supply pipe 503 and the antifreezing heater 504, and the metal 502 is attached to the surface of the insulating material 501. The metal material 502 is pasted up to the tip of the water supply pipe 503.

  As described above, in the present embodiment, the insulating material 501 is attached to the terminal portion of the antifreezing heater 504 at the tip of the water supply pipe in the configuration of the water supply pipe 503 and the antifreezing heater 504, and the metal is applied to the surface of the insulating material 501. By sticking the metal material 502 to the tip of the water supply pipe 503, the tip temperature of the water supply pipe can be further increased, so that the reliability of freeze prevention can be further improved.

(Embodiment 5)
The difference from the fourth embodiment is that the insulating material 501 is a heat-shrinkable tube.

  As described above, in the present embodiment, the insulating material 501 is a heat-shrinkable tube, thereby ensuring insulation from the anti-freezing heater 504, ensuring anti-freezing reliability, and improving workability. I can do it.

(Embodiment 6)
6A is a cross-sectional view of the automatic ice making device according to Embodiment 6 of the present invention, and FIG. 6B is a cross-sectional view taken along the line AB of FIG. 6A.

  The difference from the fifth embodiment is that a rib 603 is formed in the vicinity of the tip of the water supply pipe 602 on the freezer compartment side of the partition wall 601, and the discharged cold air is directly directed to the tip of the water supply pipe 602 in the freezer circulation air passage. A rib 604 is formed on the partition wall 601 so as not to hit.

  As described above, in the present embodiment, the rib 603 is configured near the position of the tip of the water supply pipe 602 on the freezer compartment side of the partition wall 601, and the discharged cold air directly flows into the internal circulation air passage of the freezer compartment. By forming the rib 604 on the partition wall 601 so as not to hit the tip, it is possible to ensure insulation from the anti-freezing heater, further ensure the reliability of anti-freezing, and improve workability. .

  As described above, the refrigerator with an automatic ice making device according to the present invention can be made of an inexpensive material as a means for solving freezing prevention and insulation of the heater, so that it can be used not only for home refrigerators but also for various refrigeration devices. Can also be applied.

Sectional drawing of the refrigerator in Embodiment 1 of this invention (A) Sectional view of automatic ice making device in embodiment 1 of the present invention (b) Sectional view taken along line AB of FIG. 2 (a) (A) Cross-sectional view of automatic ice making device according to Embodiment 2 of the present invention (b) Cross-sectional view taken along line AB of FIG. 3 (a) (A) Cross-sectional view of automatic ice making device according to Embodiment 3 of the present invention (b) Cross-sectional view taken along line AB of FIG. 4 (a) (A) Sectional view of automatic ice making device in embodiment 4 of the present invention (b) Sectional view taken along line AB of FIG. 5 (a) (A) Cross-sectional view of automatic ice making device according to Embodiment 6 of the present invention (b) A-B cross-sectional view of FIG. 6 (a) Cross section of conventional automatic ice making equipment Cross-sectional view of conventional water supply pipe and anti-freezing heater

Explanation of symbols

102 cold storage room 103 freezing room 104,303,403,601 partition wall 201 water supply tank 205 ice tray 206,302,402,503,602 water supply pipe 207 heat insulating member 211,304,504 antifreeze heater 301 rib 401 rib 404 inside Circulation air passage 501 Insulating material 502 Metal material 603 Rib 604 Rib

Claims (6)

  A water supply tank that is partitioned by a partition wall and has a refrigerator compartment at the top and a freezer compartment at the bottom, and is placed on the lower surface of the refrigerator compartment, an ice tray placed in the freezer compartment, and water in the water tank The water supply pipe is made of a resin material, and a freezing prevention heater for preventing freezing is arranged inside the partition wall on the surface. The water supply pipe is disposed at a lower portion of the water supply tank, and the water supply pipe upper portion of the partition wall is formed of a heat insulating member made of a foam material so that the water supply pipe can be attached and detached. refrigerator.   The refrigerator according to claim 1, wherein a rib is formed in the vicinity of a tip end position of the water supply pipe on the freezing chamber side of the partition wall.   The refrigerator according to claim 1, wherein a rib is formed on the partition wall so that the discharged cold air does not directly hit the tip of the water supply pipe in the internal circulation air path of the freezer compartment.   In the structure of the water supply pipe and the antifreeze heater, an insulating material is attached to the end of the antifreeze heater at the tip of the water supply pipe, and a metal material is attached to the surface of the insulating material up to the position of the tip of the water supply pipe. The refrigerator according to claim 1, wherein the refrigerator is attached.   The refrigerator according to claim 4, wherein the insulating material is a heat shrinkable tube.   A rib is formed in the vicinity of the water supply pipe tip position on the freezer compartment side of the partition wall so that the discharge cold air does not directly hit the tip of the water supply pipe in the internal circulation air passage of the freezer compartment. The refrigerator according to claim 5, comprising a rib.

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