JP2022044366A - Heat storage chamber - Google Patents

Abstract

To provide a heat storage chamber which can evenly heat while suppressing temperature unevenness in a chamber.SOLUTION: A heat storage chamber 1 includes a heat storage chamber body 10 and a heating unit 40. The heating unit 40 includes, in the inside of the heat storage chamber body 10, an inner duct 41 arranged in a vertical direction relative to a side wall of the heat storage chamber body 10, an outer duct 43 arranged in the vertical direction to enclose the inner duct 41 inside the heat storage chamber body 10, a first heating means 42 provided inside the inner duct 41, a second heating means 44 provided inside the outer duct 43, and a blower mechanism for sending inside air in the heat storage chamber body 10 to the inner duct 41 and the outer duct 43 from above to below. The outer duct 43 is equipped with a ventilation hole 43C for communicating the inside of the outer duct 43 with the inside of the heat storage chamber body 10.SELECTED DRAWING: Figure 3

Description

The technology disclosed herein relates to a hot storage.

Conventionally, there has been known a hot storage that can store cooked food in a state of serving tableware and heat it at a predetermined temperature. For example, Patent Document 1 has a storage unit capable of accommodating a plurality of tableware in the refrigerator, and ducts in which heater panels are arranged are provided on the left and right side surfaces and the back surface of the refrigerator, and these ducts are provided by a blower fan. A hot storage room having a structure capable of smoothly blowing air from above to below is disclosed. According to this warm storage, it is described that the air generated by the blower fan can be sent from the ducts on the side and the back to the storage unit in a uniform amount, and the temperature inside the storage unit can be made uniform.

Japanese Unexamined Patent Publication No. 2007-021000

However, even in a warm storage equipped with a blower fan, the temperature inside the storage tends to be higher in the lower direction, and there is room for improvement.
The technique disclosed herein has been completed based on such circumstances, and an object thereof is to provide a warm storage capable of suppressing temperature unevenness in the storage and uniformly heating the storage. ..

Therefore, in order to solve the above-mentioned problems, the warm storage disclosed here includes a hot storage main body for accommodating a hot storage object and a heating unit for heating the inside air of the hot storage main body. I have. The heating unit surrounds the inner duct arranged along the side wall of the warm storage body in the vertical direction inside the warm storage body and the inner duct inside the warm storage body. The outer duct arranged along the vertical direction, the first heating means provided in the inner duct, the second heating means provided in the outer duct, and the warm storage main body. The outer duct communicates the inside of the outer duct with the inside of the warm storage body, comprising a ventilation mechanism for sending the inside air of the inner duct to the inner duct and the outer duct from above to downward. It has ventilation holes.

In the above configuration, heating means are provided in each of the double ducts including the inner duct and the outer duct, and the duct is used as a heating panel. As a result, the heating area can be effectively expanded, and a hot storage with high heating efficiency (heat exchange efficiency) of the inside air can be realized. Further, the air flowing through the outer duct is sent into the refrigerator not only at the downstream end of the outer duct but also through the ventilation holes provided in the outer duct. This provides a warm storage that can suppress the occurrence of temperature unevenness due to the local heating of the lower part of the warm storage and can uniformly heat the inside of the storage.

In a preferred embodiment, the warming chamber main body includes a rectangular parallelepiped-shaped warming chamber that opens forward, and a door that opens and closes the opening of the warming chamber. The outer duct is installed on the back wall, which is the side wall opposite to the opening, and extends from both ends of the main body portion separated from the back wall toward the back wall. It is configured to include a side surface portion, and a plurality of the vent holes are provided in the main body portion and the side surface portion in the vertical direction. In the above configuration, the outer duct is provided with ventilation holes in both the main body portion and the side surface portion in the vertical direction. As a result, the occurrence of temperature unevenness in the hot storage is more preferably suppressed, and a hot storage capable of heating the inside of the storage more uniformly is provided.

In a preferred embodiment, the first heating means and the second heating means are cord heaters, respectively, and the inner duct and the outer duct are a main body portion separated from the side wall and the main body, respectively. The cord heater is configured to include side surface portions extending from both ends in the width direction of the portion toward the side wall, and the cord heater is arranged on the surface of the main body portion toward the side wall. The blower mechanism includes a cross-flow type fan that allows air to flow in a direction crossing the rotation axis of the drum-type rotary blade. According to the above configuration, since the air inside the refrigerator is circulated by a cross-flow type fan, it is possible to blow air with a large air volume and a small static pressure as compared with the case of using a propeller fan, a blower, or the like. .. As a result, the air heated by the heating unit can be efficiently circulated in the refrigerator while preventing the stored food or the like from drying. As a result, a warm storage with excellent heating efficiency and warming efficiency is provided.

In a preferred embodiment, the inner duct and the outer duct are each made of aluminum or an aluminum alloy. Since aluminum or an aluminum alloy has high thermal conductivity and is relatively lightweight, heat generated by the first heating means and the second heating means can be efficiently propagated to the inner duct and the outer duct. , The double duct can be made lighter. As a result, the heating efficiency of the air inside the hot storage can be further improved, and the weight of the hot storage can be reduced.

In a preferred embodiment, the warm storage is provided with a wind direction plate extending toward the outer duct on the surface of the inner duct facing the outer duct. According to the above configuration, the downward air flow inside the outer duct can be changed in the direction toward the plate surface of the outer duct. As a result, the contact efficiency between the outer duct and the air can be improved, and the air flowing inside the outer duct can be efficiently sent from the ventilation holes to the inside of the refrigerator. As a result, the heating efficiency and circulation efficiency of the air in the refrigerator can be further improved, and the temperature unevenness in the refrigerator can be suitably suppressed.

In a preferred embodiment, the warm storage is provided with a temperature detecting means for detecting the temperature of the inside air and a control device for controlling the operation of the heating unit. The control device has the first heating means and the second heating until the temperature of the inside air detected by the temperature detecting means reaches a first temperature lower than a preset heating temperature. After the means are continuously operated and the temperature of the inside air detected by the temperature detecting means reaches the first temperature, the inside air is heated stepwise by a predetermined temperature range. It has a configuration in which the heating means 1 and the second heating means are operated intermittently. In the warm storage, for example, when the warming temperature is high, the first and second heating means may be significantly overheated than the air (inside air) in the storage. According to the above configuration, after the temperature inside the refrigerator reaches, for example, the first temperature at which the temperature of the heating means and the temperature inside the refrigerator are likely to deviate, the first and second heating means are intermittently operated. Therefore, the temperature inside the refrigerator can be increased by a predetermined temperature range. As a result, it is possible to suppress the discrepancy between the temperature of the heating means and the temperature inside the refrigerator. As a result, for example, it is not necessary to set the heat resistant temperature of the heating unit excessively high, and the durability of the heating unit can be improved. Further, in a warm storage equipped with a safety device (for example, an overheat prevention device using a thermostat or the like), it is possible to prevent the safety device from malfunctioning.

In a preferred embodiment, the warm storage is provided with a temperature detecting means for detecting the temperature of the inside air, a time measuring means, a notification means, and a control device. The control device measures the elapsed time from the start of heating of the inside air by at least one of the first heating means and the second heating means by the timing means, and the temperature detecting means. When the temperature of the inside air is detected and the elapsed time reaches a predetermined set time, if the detected temperature of the inside air does not reach the predetermined set temperature, the first heating means activated. And at least one of the second heating means is determined to be out of order, and the notification means is provided to notify the failure. According to the above configuration, it is possible to automatically detect the failure of the first and second heating means and promptly notify the user and the like. As a result, when the first and second heating means break down due to disconnection or the like, the user can quickly grasp the situation and immediately respond to the failure of the first and second heating means. It is preferable because it is possible to do so.

In a preferred embodiment, the warm storage comprises a timekeeping means, a notification means, and a control device. The control device includes a configuration in which when the elapsed time measured by the time measuring means reaches a preset first time, the notification means notifies the arrival of the first time. According to the above configuration, for example, when the user stores the cooked food in the heat storage, the user starts the time measurement by the time measuring means, so that the heating time of the food reaches the predetermined first time. Is promptly notified to the user and the like. Thereby, for example, in the case of performing hygiene control according to HACCP, it is possible to easily carry out appropriate temperature control of the cooked food.

In a preferred embodiment, the notification means is at least one selected from the group consisting of display devices, warning lights, and alarms. According to the above configuration, it is suitable because it is possible to adopt a notification mode suitable for the user who uses the heat storage.

According to the technique disclosed herein, it is possible to provide a hot storage that can suppress temperature unevenness in the storage and heat it uniformly.

Perspective view of the heat storage according to the first embodiment Cross-sectional view along the side surface of the heat storage (AA cross-sectional view of FIG. 1) Cross-sectional view along the front of the heat storage (BB cross-sectional view of FIG. 1) Cross-sectional view of the main part along the upper surface of the heat storage (CC cross-sectional view of FIG. 1) Perspective view of outer duct and outer heater Rear view of outer duct and outer heater Perspective view of inner duct and inner heater Rear view of inner duct and inner heater Rear view of upper and lower doors Notched perspective view of packing according to the first embodiment Cross-sectional view of the main part along the upper surface of the heat storage (DD cross-sectional view of FIG. 1) Perspective view of the main parts of the upper and lower doors Cross-sectional view of the main parts of the upper and lower doors (E-E cross-sectional view of FIG. 9) Perspective view of the packing support member according to the first embodiment Sectional drawing of the main part of the heating unit which installed the wind direction plate which concerns on Embodiment 2. Front view of the main part of the heating unit (back wall) in which the wind direction plate according to the second embodiment is installed. Front view of the main part of the heating unit (inner duct) in which the wind direction plate according to the second embodiment is installed. A graph showing the state of temperature control of the heat storage according to the third embodiment. Failure detection flow of the heater of the heat storage according to the fourth embodiment Failure detection flow of the heater of the heat storage according to the fifth embodiment Front view showing the operation panel of the heat storage according to the sixth embodiment Perspective view of the packing support member according to the seventh embodiment Rear view of the upper door and the lower door of the heat storage according to the eighth embodiment. Enlarged view of the main part of FIG. 23 Cross-sectional view of the main part of the upper door and the lower door (FF cross-sectional view of FIG. 24) Schematic diagram of the packing according to the eighth embodiment (A) schematic cross-sectional view and (B) front view showing the state when the packing is misplaced (twisted) at the top and bottom. (A) sectional view and (B) front view of the upper door and the lower door of the heat storage according to the ninth embodiment. Schematic diagram of packing according to the tenth embodiment A perspective view showing a state when the packing according to the tenth embodiment is closed. Schematic diagram of the packing according to the eleventh embodiment Schematic diagram of packing according to the twelfth embodiment Schematic diagram of packing according to the thirteenth embodiment Schematic diagram of the packing according to the fourteenth embodiment Schematic cross-sectional view of (A) upper door and lower door and (B) perspective view of packing according to the fifteenth embodiment. (A) sectional view and (B) front view of the upper door and the lower door according to the sixteenth embodiment (A) sectional view and (B) front view of the packing. Schematic cross-sectional view of (A) upper door and lower door and (B) perspective view of packing according to the seventeenth embodiment. Schematic cross-sectional view of (A) upper door and lower door and (B) perspective view of packing according to the eighteenth embodiment. Schematic cross-sectional view of (A) upper door and lower door and (B) perspective view of packing according to the nineteenth embodiment. (A) sectional view and (B) front view of the upper door and the lower door according to the twenty embodiment. Schematic cross-sectional view of the upper and lower doors according to the twenty-first embodiment (A) when the door is opened and closed and (B) when the door is closed. Schematic cross-sectional view of the upper and lower doors according to the 22nd embodiment (A) when the door is opened and closed and (B) when the door is closed. Schematic cross-sectional view of the upper and lower doors according to the 23rd embodiment (A) when the door is opened and closed and (B) when the door is closed. Schematic cross-sectional view of the upper and lower doors according to the twenty-fourth embodiment (A) when the door is opened and closed and (B) when the door is closed. Perspective view of the telescopic member according to the twenty-fourth embodiment Schematic cross-sectional view of the upper and lower doors according to the 25th embodiment (A) when the door is opened and closed and (B) when the door is closed. Schematic cross-sectional view of the upper and lower doors according to the twenty-sixth embodiment (A) when the door is opened and closed and (B) when the door is closed. Perspective view of the heating chamber of the heating storage according to the twenty-sixth embodiment. Schematic cross-sectional view of the upper and lower doors according to the 27th embodiment (A) when the door is opened and closed and (B) when the door is closed. (A) sectional view and (B) rear view of the sealed structure of the upper door and the lower door according to the twenty-eighth embodiment. Schematic cross-sectional view illustrating the state of the sealing plates (A) to (F) when the upper door and the lower door are variously opened and closed in the sealed structure of the upper door and the lower door according to the twenty-eighth embodiment.

The techniques disclosed herein will be described with reference to the drawings as appropriate. The reference numerals F, Rr, L, R, U, and D shown in each figure are left and right in the front, rear, and width directions (left and right directions) when the door 30 of the heat storage 1 is the front, respectively. The direction is shown above and below in the vertical direction (vertical direction). However, the above direction is only for convenience and should not be interpreted in a limited way.

<< Embodiment 1 >>
[Warm storage]
The heat storage 1 according to the present embodiment is a transport vehicle having a heat insulating facility (so-called hot), which can store high-temperature food after cooking at a high temperature and can be moved for serving, etc., for example. Cart). The heat storage 1 is, for example, a temperature zone in which most bacteria are killed (for example, "65 ° C or higher" indicated as one of the controlled temperatures of food after cooking in the "Massive Cooking Facility Hygiene Management Manual" issued by the Ministry of Health, Labor and Welfare. As an example, the contents can be stored at an arbitrary set temperature (65 to 95 ° C.). As shown in FIGS. 1 to 3, the warm storage 1 has a substantially rectangular parallelepiped shape as a whole, and generally the warm storage main body 10 constituting the heating space is the main body, and the machine room 5 is hot storage. It is arranged above the main body 10 and supports the four corners of the main body 10 from below by four casters 7. Hereinafter, each component will be described.

The main body 10 of the heat storage has a box shape with an open front surface, and has a heat storage room 11 that can store foods and the like to be stored inside, and a door 30 that opens and closes the opening of the heat storage room 11. Have. By covering the opening of the heat storage room 11 with the door 30 in the heat storage main body 10, a heat storage space can be constructed inside the heat storage room 11. The heating chamber 11 and the door 30 have a hollow structure made of a metal plate such as stainless steel, and the inside thereof is filled with a heat insulating material such as glass wool, so that the heating space (hereinafter, simply referred to as the inside of the refrigerator) is used. In some cases), it is possible to insulate from the outside. The door 30 of the heat storage 1 of the present embodiment is composed of two doors 30 of an upper door 31 and a lower door 32, and these two doors 31 in which one opening of the heat storage room 11 is arranged vertically are arranged. , 32 can be opened and closed independently. By opening and closing one opening with two doors 31 and 32, fluctuations in the temperature inside the refrigerator can be suppressed and the object to be heated can be taken in and out of the heating chamber 11.

A pair of upper and lower hinge mechanisms 31D and 32D are attached to the doors 31 and 32 on the left side surfaces 31B and 32B thereof. Further, in the heating chamber 11, hinge mechanisms 31D and 32D are attached to the left side portion 11B of the opening edge portion (peripheral portion of the opening) at positions corresponding to the upper door 31 and the lower door 32. The doors 31 and 32 can be swung open and closed with respect to the heating chamber 11 with the hinge mechanisms 31D and 32D as swinging shafts. Each door 31 and 32 is provided with a packing 34 for ensuring airtightness with the heating chamber 11. The configuration of the packing 34 will be described in detail later. Further, as shown in FIG. 1, the doors 31 and 32 are provided with handles 33 on the right side surfaces 31C and 32C at positions closer to the center in the vertical direction of the heating chamber 11, and the heating chamber is provided. A magnet (not shown) having a high attractive force is attached to the right side portion 11C which is the opening edge portion of 11 and faces the handles 33. With such a configuration, when the upper door 31 and the lower door 32 are closed, the handle 33 is strongly attracted to the opening edge of the heating chamber 11 and is tightly sealed. Further, when opening the upper door 31 or the lower door 32, by tilting the handle 33 of the corresponding door toward you, the fixing of the upper door 31 or the lower door 32 by magnet attraction can be released by the reaction of the lever. There is.

The heating chamber 11 includes an upper wall 12A, a pair of left side wall 12B and right side wall 12C, a back wall 12D, and a bottom wall 12E. The left side wall 12B, the right side wall 12C, and the back wall 12D are examples of side walls in the present technology. As shown in FIGS. 2 and 3, a tray receiving structure 20 made of a metal such as stainless steel or an aluminum alloy is provided in the refrigerator. The tray receiving structure 20 is roughly composed of a shelf pillar 21 and a tray guide 23 (shelf support), and a tray 25 (a tray 25) on which cooked foods and tableware are placed in the heating chamber 11. (Shelves) can be placed in a single unit or in a form in which multiple items are lined up in the vertical direction. Specifically, one shelf pillar 21 is fixed to each of the left side wall 12B and the right side wall 12C in the heating chamber 11. The shelf pillar 21 is provided with a plurality of locking holes 21A at predetermined intervals in the vertical direction, and by locking the front and rear locking claws 23A of the tray guide 23 in the locking holes 21A, the left wall In each of the 12B and the right side wall 12C, the tray guide 23 is passed to the front and rear shelf columns 21 in a substantially horizontal posture, and is detachably attached so as to protrude toward the center side in the width direction. There is. The tray guides 23 are paired with the left and right shelf columns 21 installed at the same height, and one tray 25 (for example, a hotel pan) is substantially horizontal on the pair of tray guides 23. Can be placed in.

[Heating unit]
A heating unit 40 is provided behind the heating chamber 11. As shown in FIGS. 2 and 4, the heating unit 40 roughly includes an inner duct 41, an inner heater 42 (an example of the first heating means), an outer duct 43, and an outer heater 44 (of the second heating means). An example) and a fan 46 (an example of a ventilation mechanism) are provided. Of the heating units 40, the ducts 41, 43 and the heaters 42, 44 are arranged inside the heating chamber 11, but the fan 46 penetrates into the machine chamber 5 and is located in the heating chamber 11. It is arranged in the fan room 47, which is drawn above. Hereinafter, each part of the heating unit 40 will be described.

The inner duct 41 and the outer duct 43 have side surfaces extending from both ends of the main body portions 41A and 43A and the main body portions 41A and 43A, respectively, by bending a long aluminum alloy plate into a substantially U-shaped cross section. It is formed so as to include portions 41B and 43B. The outer duct 43 is configured to have larger dimensions in the width direction, the vertical direction, and the front-rear direction than the inner duct 41, and the inner duct 41 is provided with respect to the inner surface of the back wall 12D. The outer duct 43 is on the inner side, and the U-shaped bulging portion (in other words, the longitudinal direction of the main body portions 41A, 43A and the side surface portions 41B, 43B) is separated from each other so as to be along the vertical and rear directions. It is fixed. As a result, in the heating unit 40, the first air flow path F1 is provided between the back wall 12D and the inner duct 41, and the second air is provided between the inner duct 41 and the outer duct 43 in the vertical direction. The flow path F2 is formed.

As shown in FIGS. 5 and 6, the inner duct 41 is provided with an inner heater 42 on a surface facing the back wall 12D (hereinafter referred to as “back surface”). The inner heater 42 of this example is a so-called silicone cord heater (an example of a cord heater) in which a lead wire (copper wire) is coated with silicone rubber, and is arranged one by one on the right side portion and the left side portion of the inner duct 41. There is. The inner heater 42 meanders and is arranged so as to extend in parallel in the vertical direction in each of the right side portion and the left side portion of the inner duct 41, and is fixed to the back surface of the inner duct 41 by an aluminum foil tape. Both ends of the inner heater 42 are arranged upward, and are electrically connected to the control device 100 provided in the machine room 5, which will be described later, and can be connected to an external power source (not shown). The inner duct 41 also serves as a heater panel that supports the inner heater 42.

A plurality of elongated hole-shaped ventilation holes 41C for ventilating the inside and outside of the inner duct 41 are formed through the side surface portion 41B of the inner duct 41 so as to be separated from each other. A plurality of ventilation holes 41C are arranged in each of the left and right side surface portions 41B in the vertical direction, and in the inner duct 41 of this example, two in the front-rear direction and two in the vertical direction in each side surface portion 41B. A total of 34 ventilation holes 41C, 17 of which, are arranged. A ventilation hole 41C is not formed in the main body portion 41A of the inner duct 41, and an opening 41D for attaching a thermostat 45, which will be described later, is formed in the upper portion in the central portion between the attachment points of the two inner heaters 42. Has been done.

The thermostat 45 is a bimetal type temperature controller, and its heat sensitive portion is arranged between the main body portion 41A of the inner duct 41 and the main body portion 43A of the outer duct 43 through the opening 41D of the inner duct 41. , Fixed to the back wall 12D. This thermostat 45 constitutes a B contact in the power supply circuit to the inner heater 42 and the outer heater 44, and although it is normally energized (ON), the ambient temperature is a predetermined set temperature (for example, 95 ° C.). ), The contact is opened to cut off (OFF) the supply of electric power to the inner heater 42 and the outer heater 44. This makes it possible to prevent abnormal overheating of the inner heater 42 and the outer heater 44. Although not limited to this, the thermostat 45 of this example is a manual reset type that manually resets after a safety confirmation by the user when the thermostat 45 is opened at a predetermined set temperature (operating temperature) or higher. ing.

As shown in FIGS. 7 and 8, the outer duct 43 is provided with an outer heater 44 on a surface facing the back wall 12D (hereinafter referred to as “back surface”). The outer heater 44 is a so-called silicone cord heater in which a lead copper wire similar to the inner heater 42 is coated with silicone rubber, and is arranged one by one on the right side portion and the left side portion of the outer duct 43. The outer heater 44 is arranged in a meandering manner so as to extend in parallel in the vertical direction in each of the right side portion and the left side portion of the outer duct 43, and is fixed to the back surface of the outer duct 43 by an aluminum foil tape. Both ends of the outer heater 44 are arranged upward, and are electrically connected to the control device 100 and can be connected to an external power source (not shown). The outer duct 43 also serves as a heater panel that supports the outer heater 44.

Further, a plurality of elongated hole-shaped ventilation holes 43C for ventilating the inside and outside of the outer duct are provided in the main body portion 43A and the side surface portion 43B of the outer duct 43 so as to be separated from each other. In the main body 43A, ventilation holes 43C are arranged in the vertical direction at the left and right end portions and the central portion except for the portion where the outer heater 44 is attached. An inspection hole 43D is provided in the central portion at a position corresponding to the front of the thermostat 45 in place of the ventilation hole 43C. The inspection hole 43D is detachably covered from the front by a lid member 43E made of a plate material made of an aluminum alloy. A plurality of ventilation holes 43C are arranged in the vertical direction on each of the left and right side surface portions 43B. As shown in FIG. 2, the ventilation holes 43C of the side surface portion 43B of the outer duct 43 and the ventilation holes 41C of the side surface portion 41B of the inner duct 41 are arranged at positions slightly offset in the height direction. There is. In the side surface portion 43B, the number of ventilation holes 43C is smaller in the lower portion than in the upper portion. For example, in the outer duct 43 of this example, a total of 45 ventilation holes 41C, 5 in the front-rear direction and 9 in the vertical direction, are arranged in the upper portion of one side surface portion 43B, and the lower portion. In the upper portion, a total of 27 ventilation holes 41C, three in the front-rear direction and nine in the vertical direction, are arranged at positions corresponding to the front three rows.

As shown in FIG. 2, the lower end of the inner duct 41 is arranged above the lower end of the outer duct 43, and the first air flow path F1 is below the inner duct 41 and is second. It joins the air flow path F2 of. The lower end of the outer duct 43 is arranged below the tray guide 23 attached to the lowermost stage of the tray receiving structure 20, and a relatively narrow gap is formed between the lower end of the outer duct 43 and the bottom wall 12E. ing. With such a configuration, the second air flow path F2 and the first air flow path F1 are communicated with each other in the refrigerator through a gap (outlet) between the lower end of the outer duct 43 and the bottom wall 12E. ..

As shown in FIG. 2, the fan room 47 is provided so as to penetrate the upper wall 12A in the rear central portion of the upper wall 12A and project upward between the upper wall 12A and the back wall 12D. An intake port 47A is formed on the lower surface of the fan room 47 so that the air in the refrigerator can be taken into the fan room 47. The fan room 47 is provided with a thermistor 48 (an example of temperature detecting means) above the intake port 47A so as to detect the temperature of the internal air taken into the fan room 47 and send it to the control device 100. It has become. Further, the fan room 47 is provided with two cross-flow type fans as the fans 46. However, there may be only one fan. The fan 46 is electrically connected to the control device 100 and can be connected to an external power source (not shown).

The cross-flow type fan is called a cross-flow fan, a once-through fan, a line flow fan (registered trademark), a cross flow fan, a tangential fan, a cross flow fan, etc. By rotating the rotary blade (impeller) that it has inside the case, when the air on one side (intake port) is sucked (sucked) into the gap between the blades, the air crosses (crosses) the axis of rotation. Is configured to flow, and air is discharged from the gap between the blades on the other side (exhaust port). This cross-flow type fan 46 has a lower static pressure and an operating noise as compared with, for example, an axial-flow type fan typified by a propeller fan or a wide-flow type fan typified by a blower or a sirocco fan. It is characterized by being small, flat and easy to form a soft air flow. In this type of warm storage, a circulation fan is installed to keep the temperature inside the storage uniform, but cooked food is excessively exposed to high-temperature air flow without being covered with a cover or the like. Then, the surface may be dried and the taste and flavor may be impaired. The warm storage 1 disclosed here gently circulates the air inside the storage with a low static pressure by a cross-flow type fan 46, so that the food stored in the hot storage without a cover or the like is dried and blown. Deterioration of quality due to the above can be suitably suppressed. Although not limited to this, the fan 46 may be, for example, a fan having a maximum static pressure of 20 Pa or less, preferably 10 Pa or less.

Each of the two fans 46 is installed so that the rotation axis is along the width direction. Among these fans 46, the one arranged relatively rearward is referred to as a first fan 46A, and the one arranged relatively forward is referred to as a second fan 46B. The intake ports I1 and I2 of these fans 46A and 46B are both arranged in the fan room 47, and the exhaust ports O1 and O2 are located between the inner duct 41 and the back wall 12D for the first fan 46A (for the first fan 46A). That is, it is connected to the first air flow path F1), and the second fan 46B is connected between the outer duct 43 and the inner duct 41 (that is, the second air flow path F2). By driving these fans 46, the air in the refrigerator is sucked into the fan room 47 through the intake port 47A, and the first air flow path F1 and the second air flow path F2 in the ducts 41 and 43 are sucked. You can send it to.

As shown in FIGS. 2 and 3, the machine room 5 is arranged above the heating storage body 10, and accommodates the control device 100 in front of the machine room 5, and a part of the heating unit 40 (fan) behind the control device 100. Room 47) is arranged. Specifically, the machine room 5 includes a front panel 5A, a pair of side panels 5B, a back panel 5C, a bottom panel 5D, and a top panel 5E, and these panels are connected in a box shape. ing. The front panel 5A is formed in a substantially U-shape so that the top view corresponds to the door 30 arranged in front of the heating chamber 11.

As shown in FIG. 1, an operation panel 150 is installed on the front right side of the front panel 5A. The operation panel 150 provides, for example, a display unit 152 capable of displaying status information of each part of the heat storage 1 and operating conditions of the heat storage 1, and instructing and setting various operations of the heat storage 1. An input unit 154 and the like for this purpose are provided. The display unit 152 in this example is a 7-segment display, and is configured to display numbers and alphabets in a 7-segment display format in response to an instruction from the control device 100. The display unit 152 is an example of the notification means in the present technology. The input unit 154 is a user interface used for a user to input an instruction to the control device 100, and the input unit 154 in this example is configured by, for example, an operation button.

Further, as shown in FIG. 1, a main power switch 156 is installed on the right side surface of the front panel 5A. The main power switch 156 switches between supply (energized state) and stop (non-energized state) of electric power from an external power source to the warm storage 1 through an outlet plug 156A extending from the back surface of the hot storage 1.

〔Control device〕
The control device 100 is electrically connected to the inner heater 42, the outer heater 44, the first fan 46A, the second fan 46B, the thermistor 48, the operation panel 150, and the like of the heating unit 40, and controls the operation of each of these parts. .. The configuration of the control device 100 is not particularly limited, and is mainly composed of a microcomputer including a memory such as a CPU, ROM and RAM, and a timer function (an example of a timekeeping means), and is stored by wire or wirelessly. It is connected to each part of 1.

Next, the operation of the heat storage 1 will be described. When the warm storage 1 is connected to an external power source and the main power switch 156 is turned on by the user, power is supplied to the hot storage 1 and the control device 100 operates each part of the hot storage 1. To control. The control device 100 of this example starts energizing the heating unit 40 when the main power switch is turned on, the inner heater 42 and the outer heater 44 start to generate heat, and the first fan 46A and the second fan 46B Starts blowing.

When the inner heater 42 and the outer heater 44 generate heat, the inner duct 41 and the outer duct 43 that come into contact with the heaters 42 and 44 are heated, and the radiant heat of these ducts 41 and 43 causes the air around the ducts 41 and 43 to be heated. Be heated. As a result, the air in the first air flow path F1 and the second air flow path F2 is heated. First, the control device 100 heats the inside air by the inner heater 42 and the outer heater 44 until the inside temperature detected by the thermistor 48 reaches the preset heating temperature TA.

In the warm storage 1 of this example, by driving the first fan 46A, the air in the storage is sent to the first air flow path F1 and heated by the inner heater 42 and the inner duct 41. , The heated air is sent from the upper side to the lower side in the first air flow path F1. At this time, a part of the air flowing through the first air flow path F1 is sent to the second air flow path F2 through the ventilation hole 41C of the side surface portion 41B of the inner duct 41, and the rest is sent to the second air flow path F2 at the lower end of the inner duct 41. It joins the air flow path F2 of 2.

Similarly, by driving the second fan 46B, the air in the refrigerator is sent to the second air flow path F2 and heated by the outer heater 44 and the outer duct 43, and the heated air is second. The air flow path F2 is sent from above to below. Here, the outer duct 43 is provided with ventilation holes 43C in the vertical direction not only in the side surface portion 43B but also in the main body portion 43A facing forward. Therefore, the air sent to the second air flow path F2 flows toward the front and side of the outer duct 43 through the ventilation holes 43C of the main body portion 43A and the side surface portion 43B while flowing through the second air flow path F2. Will be sent to the warehouse. As a result, it is possible to prevent locally heated air from being sent to the lower part of the refrigerator, suppress temperature unevenness in the vertical direction, and uniformly heat the inside of the refrigerator.

When the thermistor 48 detects that the temperature inside the refrigerator has reached the preset heating temperature TA, the control device 100 stops energizing the inner heater 42 and the outer heater 44, and stops heating the air inside the refrigerator. do. In order to keep the temperature inside the refrigerator uniform even while the energization of the heaters 42 and 44 is stopped, the control device 100 keeps blowing air by the first fan 46A and the second fan 46B. There is. Then, when the temperature inside the refrigerator detected by the thermistor 48 is lower than the heating temperature TA by a predetermined temperature (for example, 2 ° C.), the control device 100 starts energizing the inner heater 42 and the outer heater 44 again. The air inside the refrigerator is heated until the temperature inside the refrigerator reaches the warm storage temperature TA. By repeating such heat retention operation, the temperature inside the heat storage 1 can be maintained at a high temperature storage temperature TA, and foods and the like can be stored at a target temperature TA.

〔rubber seal〕
The upper door 31 and the lower door 32 each have a substantially rectangular plate shape, and as shown in FIG. 9, the back surfaces 31A and 32A (surfaces covering the openings) facing the heating chamber 11 when the doors are closed. ), The packing 34 is attached to the peripheral edge portion (edge portion). The packing 34 is a sealing member made of an elastic body (here, silicone rubber) having heat resistance in the operating temperature range of the heat storage 1. As described above, the upper door 31 and the lower door 32 are configured to swing open and close, respectively, and are located between the upper door 31 and the lower door 32 in order to avoid interference when opening and closing the door. Is provided with a gap. However, the opening of the heating chamber 11 has a so-called pillarless structure in which a pillar member (pillar) or the like is not passed to a position facing the lower end of the upper door 31 and the upper end of the lower door 32. Therefore, when the upper door 31 and the lower door 32 are closed, the packing 34 comes into close contact with the opening edge portion of the heating chamber 11 to seal the doors 31, 32 and the opening edge portion, and the upper door 31 and the lower door 31. It is configured to seal the gap with the door 32.

Specifically, the packing 34 is attached to the upper packing 35A attached to the upper edge portion of the upper door 31, the left packing 35B attached to the left and right side edges, the right packing 35C, and the lower edge portion, respectively. The lower packing 35D, the upper packing 35E attached to the upper edge of the lower door 32, the left packing 35F attached to the left and right side edges, the right packing 35G, and the lower packing 35H attached to the lower edge, respectively. , Is included. When the upper packing 35A, the left packing 35B, and the right packing 35C of the upper door 31, and the left packing 35F, the right packing 35G, and the lower packing 35H of the lower door 32 are closed, the doors 31 and 32 are closed. It is a packing interposed between the doors 31 and 32 and the opening edge of the heating chamber 11, and is attached so as to be along the back surfaces 31A and 32A of the doors 31 and 32 as a whole. The lower packing 35D of the upper door 31 and the upper packing 35E of the lower door 32 are packings arranged in the gap between the upper door 31 and the lower door 32 when the doors 31 and 32 are closed, and at least a part thereof. Is attached so as to be located below the upper door 31 and above the lower door 32.

In a conventional heat storage room or refrigerator, different packing members having different configurations are used between the packing that comes into contact with the opening edge of the heat storage room or the cold storage room and the packing that is arranged at the pillarless position. I was doing it. On the other hand, in the warm storage 1 of this example, all packings 34 (35A to 35H) having the configuration shown in FIG. 20 are commonly used.

That is, the packing 34 is a long member having elasticity, and includes a hollow tubular portion 34A and a leg portion 34D extending like a hook from the tubular portion 34A. The tubular portion 34A has a tubular shape having a substantially D-shaped cross section, and has a flat portion 34B and a curved portion 34C. The leg portion 34D has a substantially L-shaped cross section, and has a base end portion 34E extending substantially perpendicular to the curved portion 34C with respect to the flat portion 34B from one end of the flat portion 34B, and the tip of the base end portion 34E. Includes a fixed portion 34F extending from the flat portion 34B. The base end portion 34E is thicker than the other portions to enhance the durability of the packing 34, and supports the fixed portion 34F so that the flat portion 34B and the fixed portion 34F are substantially parallel to each other in the free state. ing. The separation distance between the flat portion 34B separated by the base end portion 34E and the fixed portion 34F is about several millimeters, which is sufficiently smaller than the dimension of the fixed portion 34F in the extending direction. Further, the tip of the fixing portion 34F has a protruding portion protruding toward the side of the tubular portion 34A. The packing 34 can be manufactured, for example, by extruding silicone rubber.

Regarding the mounting structure of the packing 34 interposed between the doors 31 and 32 and the opening edge of the heating chamber 11 when the door is closed, the left packing 35F mounted on the lower door 32 shown in FIG. 11 is taken as an example. explain. The upper packing 35A, the left packing 35B, and the right packing 35C of the upper door 31 and the right packing 35G and the lower packing 35H of the lower door 32 can be similarly attached.

First, the configuration of the lower door 32 will be described. The lower door 32 includes a lower door main body 321, a reinforcing member 322, a heat insulating material 323, and a back plate 324. The lower door main body 321 is formed by bending a single stainless steel plate punched into a predetermined unfolded shape, thereby bending the front surface 321a of the lower door 32, the upper, lower, left and right side surfaces 321b, and the upper, lower, left, and right peripheral portions on the back surface 32A. It is formed in a box shape including 321c. The lower door main body 321 has a rectangular opening in a portion surrounded by the peripheral edge portion 321c, and the reinforcing member 322 and the heat insulating material 323 can be arranged inside the opening through the opening. The upper, lower, left, and right peripheral edges 321c are provided with a stepped portion 321d that projects rearward (the side facing the heating chamber 11 when the lower door 32 is closed) at the peripheral edge of the opening. As for the step portion 321d, the one provided on the upper peripheral portion 321c is arranged on the central side of the back surface 32A rather than the one provided on the left and right peripheral portions 321c of the lower door 32 and the lower peripheral portion 321c.

The reinforcing member 322 is a member that mainly reinforces the lower door main body 321 against a load applied to the lower door 32, and is a member that reinforces the lower door main body 321 in the vertical direction along the left and right side surfaces 321b inside the box-shaped lower door main body 321. It is distributed over. The reinforcing member 322 is made of a stainless steel plate that is thicker (in other words, has higher rigidity) than the stainless steel plate that constitutes the lower door main body 321. In the mounting structure of the packing 34, the reinforcing member 322 can be regarded as a part of the lower door main body 321. Since the reinforcing member 322 arranged along the left side surface 321b (corresponding to the left side surface 32B) is provided on the side of the hinge mechanism 32D of the lower door 32, in order to further increase the reinforcing strength. It has a long plate shape with a substantially U-shaped cross section, and has a side surface portion along the left side surface 321b of the lower door main body 321 and a lateral portion of this side surface portion (when the lower door 32 is closed). It includes a front portion extending along the front surface 321a from both ends in the front-rear direction) and a back surface portion extending along the peripheral edge portion 321c of the back surface 32A. On the other hand, although not specifically shown, the reinforcing member 322 arranged along the right side surface 321b (corresponding to the right side surface 32C) has a long plate piece shape having a substantially L-shaped cross section. A side surface portion along the right side surface 321b of the lower door main body 321 and a back surface portion extending from the end portion of the side surface portion on the back surface 32A side along the peripheral edge portion 321c are included. The reinforcing member 322 is not arranged at a position along the upper and lower side surfaces 321b. The tip of the portion extending along the peripheral edge portion 321c on the back surface of the reinforcing member 322 is folded outward so as to come into contact with the stepped portion 321d of the lower door main body 321 from the inside (front when the lower door 32 is closed). It is doubled. The reinforcing member 322 is screwed to the left side surface 321b of the lower door main body 321 and the hinge mechanism 32D or the handle 33.

The heat insulating material 323 is a plate-like body in which fibrous glass wool is formed into a plate shape having a predetermined density, is cut according to the shape of the lower door main body 321 and is housed inside the heat insulating material 323.
The back plate 324 has a rectangular plate shape that covers the opening of the lower door main body 321 and has four peripheral edges 322a folded inward (front when the lower door 32 is closed) in a curved state. The back plate 324 is formed so that the folded portion abuts on the peripheral edge of the step portion 321d of the peripheral edge portion 321c of the lower door main body 321 (in other words, abuts on the retracted portion of the peripheral edge portion 321c). .. The widthwise dimension of the back plate 324 is formed to be slightly smaller than the widthwise dimension of the lower door main body 321. The vertical dimension of the back plate 324 is formed so as to be slightly smaller on the lower side and further smaller on the upper side than the vertical dimension of the lower door main body 321.

Then, in the left packing 35F (34), with the tubular portion 34A arranged behind the back plate 324, between the tubular portion 34A and the leg portion 34D (more specifically, the flat portion 34B and the fixed portion 34F). It is attached to the back plate 324 so as to sandwich the left peripheral edge portion 322a of the back plate 324 (between). Then, in this state, the back plate 324 is stacked so as to cover the opening of the lower door main body 321 and screwed to the outer folded portion of the reinforcing member 322, so that the left packing 35F is attached to the peripheral edge of the back 32A of the lower door 32. Fixed along. In the portion where the reinforcing member 322 is not arranged, the back plate 324 is screwed to the lower door main body 321. Here, since the peripheral edge portion 322a of the back plate 324 is folded back with a curve, the back plate 324 can fix the left packing 35F to the lower door 32 without damaging the left packing 35F. Further, since the peripheral edge portion 322a of the back plate 324 is folded back with a curve, the curved portion is elastically deformed at the time of screwing, and the fixing portion 34F of the left packing 35F is fixed to the lower door 32 without loosening. Further, the folded portion of the back plate 324 has a length that does not suppress the protrusion in the fixing portion 34F of the left packing 35F, and with such a configuration, the left portion from between the back plate 324 and the lower door main body 321. The packing 35F is prevented from coming off.

On the other hand, the mounting structure of the packing 34 that seals the gap between the upper door 31 and the lower door 32 when the door is closed will be described by taking as an example the upper packing 35E attached to the lower door 32 shown in FIGS. 12 and 13. .. Since the lower packing 35D mounted on the upper door 31 has a vertically symmetrical mounting structure with the upper packing 35E, the same description will be omitted.

The upper packing 35E is first attached to the lower door 32 in the same manner as the left packing 35F described above. That is, as shown in FIG. 13, the upper packing 35E is above the back surface 32A of the lower door 32 with the fixing portion 34F sandwiched between the peripheral edge portion 322a of the back plate 324 and the peripheral edge portion 321c of the lower door main body 321. It is fixed to the peripheral part of the door. Next, the upper packing 35E is fixed to the leg portion 34D by the packing support member 36 so that the flat portion 34B is substantially horizontal while the fixing portion 34F is fixed along the back surface 32A (that is, along the vertical direction). The position of the cylinder portion 34A is displaced.

As shown in FIG. 9, the packing support member 36 is a member that displaces the tubular portion 34A of the upper packing 35E in the longitudinal direction thereof, and is attached to the back plate 324. Specifically, as shown in FIG. 14, the packing support member 36 is roughly a long rectangular parallelepiped box body 36A having one surface open and one long side of the opening of the box body 36A. It is provided with a mounting surface portion 36B extending on the side opposite to the opening, and is formed by bending a stainless steel plate cut out into a predetermined developed shape. The bottom surface of the box body 36A and the mounting surface portion 36B are substantially parallel to each other, and the side surface to which the mounting surface portion 36B of the box body 36A is connected has a height dimension (lower door) more than the other three side surfaces. It is designed so that the dimension in the front-rear direction when the 32 is closed) becomes large. The mounting surface portion 36B is provided with a mounting hole 36C, and a mounting hole (not shown) is also provided at the mounting position of the packing support member 36 of the back plate 324. The packing support member 36 inserts a fastener 36D such as a screw into the mounting hole 36C and the mounting hole of the back plate 324 in a state where the tubular portion 34A of the upper packing 35E is supported so that the flat portion 34B is substantially horizontal. And fasten it to the back plate 324. At this time, by making the diameter of the mounting hole 36C larger than the outer diameter of the fastener 36D (for example, φ4 mm) (for example, φ6 mm), the fixing position of the packing support member 36 is finely adjusted. By extension, the displacement amount of the tubular portion 34A can be finely adjusted.

The upper packing 35E is arranged so that the curved portion 34C projects upward due to the displacement of the tubular portion 34A by the packing support member 36. As a result, the angle formed by the flat portion 34B and the fixed portion 34F of the upper packing 35E is restricted to approximately 90 degrees. Here, as described above, the stepped portion 321d (see FIG. 11) provided on the upper peripheral edge portion 321c of the lower door main body 321 has a back surface 32A as compared with the stepped portion 321d provided on the left and right and the lower side. The upper end of the back plate 324 is also arranged on the more central side (that is, lower) of the lower door main body 321 as compared with the left and right and the lower end. Therefore, the upper packing 35E is fixed to the slightly center side (that is, downward) of the back surface 32A as compared with the left packing 35F described above. As a result, the lower portion of the curved portion 34C is arranged below the upper end of the lower door 32, and the upper portion thereof is arranged above the upper end of the lower door 32. Similarly, regarding the lower packing 35D attached to the upper door 31, the upper portion of the curved portion 34C of the lower packing 35D is arranged above the lower end of the upper door 31, and the lower portion thereof is the upper door 31. It is placed below the bottom edge of. When the upper door 31 and the lower door 32 are closed, the lower part of the upper door 31 and the lower door 32 is in contact with each other so that the cylinder portion 34A of the lower packing 35D and the cylinder portion 34A of the upper packing 35E are in contact with each other. The fixed positions of the packing 35D and the upper packing 35E are designed. Thereby, the upper packing 35E and the lower packing 35D can be attached so as to seal the gap between the upper door 31 and the lower door 32. Further, even if the lower packing 35D and the upper packing 35E rub against each other when the upper door 31 and the lower door 32 are opened and closed, the curved portion 34C of the tubular portion 34A is only deformed, and the entire tubular portion 34A is displaced. Is suppressed.

Further, the packing support member 36 has a smaller dimension in the front-rear direction of the other three side surfaces than the side surface to which the mounting surface portion 36B is connected, and is configured not to press the vicinity of the base end portion 34E of the packing 34. This makes it possible to easily avoid a situation in which the flat portion 34B of the packing 34 is sandwiched between the lower door main body 321 (or the back plate 324) when the packing support member 36 is attached. Further, when the fixed portion 34F is displaced from the flat portion 34B of the packing 34 to approximately 90 degrees, it is possible to suppress the concentration of stress in the vicinity of the base end portion 34E.

As shown in FIGS. 16 and 19, the lower packing 35D and the upper packing 35E arranged in the gap between the upper door 31 and the lower door 32 are the opening edges of the doors 31 and 32 and the heating chamber 11 when the door is closed. It is arranged in a portion corresponding to the opening of the heating chamber 11 so that the tubular portion 34A is not crushed in the front-rear direction by being sandwiched between the two. Here, the lower packing 35D and the upper packing 35E have exposed cut surfaces at both left and right ends so that the inside of the hollow tubular portion 34A can be seen. Therefore, the lower ends of the left packing 35B and the right packing 35C are arranged adjacent to each other at the left and right ends of the lower packing 35H of the upper door 31 so as to block the opening of the tubular portion 34A of the lower packing 35D from the outside. ing. Further, the upper ends of the left packing 35F and the right packing 35G are arranged adjacent to each other on the left and right ends of the upper packing 35E of the lower door 32 so as to block the opening of the cylinder portion 34A of the upper packing 35E from the outside. ing.

Here, since the upper ends of the left packing 35F and the right packing 35G are adjacent to the ends of the upper packing 35E as described above, they protrude upward from the upper end of the lower door 32 and are fixed to the lower door 32. It is in a state where it has not been done. Therefore, it is conceivable that the upper ends of the left packing 35F and the right packing 35G swing due to the opening and closing of the lower door 32. Therefore, as shown in FIG. 19, the left packing 35F and the right packing 35G may increase the rigidity of the protruding portion by sealing the opening at the upper end. If the cut surface is exposed at the upper ends of the left packing 35F and the right packing 35G, the appearance is not good and dust and dirt easily enter the inside of the cylinder 34A. By sealing the opening at the upper end, these inconveniences can be eliminated. Further, as shown in FIG. 19, a support member 38 may be inserted above the left packing 35F and the right packing 35G. The material constituting the support member 38 is not particularly limited as long as the packings 35F and 35G can stand on their own, but for example, a lightweight, deformable material having heat insulating properties such as a sponge (foam). Is preferable. However, the left packing 35F and the right packing 35G may be made of a material having rigidity that allows them to stand on their own even when they are not fixed to the lower door 32.

As described above, the warm storage 1 disclosed here is for heating the inside air of the hot storage main body 10 for accommodating cooked foods, tableware and other hot storage objects. The heating unit 40 and the like are provided. The heating unit 40 has an inner duct 41 arranged in the vertical direction with respect to the back wall 12D (an example of a side wall) of the warm storage main body 10 inside the hot storage main body 10, and the warm storage main body 10. Inside, an outer duct 43 arranged along the vertical direction so as to surround the inner duct 41, an inner heater 42 (first heating means) provided in the inner duct 41, and an outer duct 43 provided in the outer duct 43. It is provided with an outer heater 44 (second heating means) and a fan 46 (blower mechanism) that sends the inside air of the heat storage body 10 to the inner duct 41 and the outer duct 43 from the upper side to the lower side. The outer duct 43 is provided with a ventilation hole 43C that communicates the inside of the outer duct 43 with the inside of the heat storage body 10.

The heat storage 1 is provided with heaters 42 and 44 in a double duct composed of an inner duct 41 and an outer duct 43, respectively, and the ducts 41 are heated by the heaters 42 and 44 to heat the ducts 41. , 43 function as a heating panel. As a result, the heating area of the heating means can be effectively expanded, and the heating storage 1 having high heating efficiency (heat exchange efficiency) of the air in the storage can be realized. Since the inner duct 41 and the outer duct 43 are doubly arranged along the back wall, the heating area by the heating means can be increased without enlarging the widthwise dimension of the heat storage 1. Is possible. Thereby, for example, when the front-rear direction is set as the traveling direction, the width dimension of the passage required for the movement of the heat storage 1 can be suppressed to a small size. Further, the air flowing inside the outer duct 43 is sent into the refrigerator not only from the downstream end of the outer duct 43 but also from the ventilation hole 43C provided in the outer duct 43. As a result, it is possible to prevent the lower part of the warm storage 1 from being locally heated to cause temperature unevenness, and to uniformly heat the inside of the storage.

In the above-mentioned warm storage 1, the hot storage main body 10 includes a rectangular parallelepiped-shaped warm storage chamber 11 that opens forward, and a door 30 that opens and closes the opening of the warm storage chamber 11. The outer duct 43 is installed on the back wall 12D which is a side wall opposite to the opening, and extends from both ends of the main body portion 43A separated from the back wall 12D toward the back wall 12D. The side surface portion 43B is provided, and a plurality of ventilation holes 43C are provided in the main body portion 43A and the side surface portion 43B in the vertical direction. According to such a configuration, the heated air flowing downward through the outer duct 43 can be sent into the refrigerator in the middle of the flow, and the occurrence of temperature unevenness in the refrigerator can be more preferably suppressed. can. As a result, the inside of the warm storage 1 can be heated more uniformly.

Further, in the above-mentioned warm storage 1, the inner duct 41 is installed on the back wall 12D which is the side wall opposite to the opening, and the main body 41A and the main body 41A separated from the back wall 12D. A side surface portion 41B extending from both ends thereof toward the back wall 12D is provided, and a plurality of ventilation holes 41C are provided in the side surface portion 41B in the vertical direction. According to such a configuration, the heated air flowing downward through the inner duct 41 can be sent to the inside of the outer duct 43 in the middle of the flow, and is sent from the outer duct 43 into the refrigerator in the middle of the flow. The amount of air produced can be increased. As a result, the circulation of the heated air in the refrigerator can be promoted, the heating efficiency can be improved, and the occurrence of temperature unevenness can be more preferably suppressed.

In the above-mentioned heat storage 1, the inner heater 42 (first heating means) and the outer heater 44 (second heating means) are cord heaters, respectively, and the inner duct 41 and the outer duct 43 are back walls 12D (respectively). It is configured to include a main body portion 43A separated from an example of a side wall, and a side surface portion 43B extending from both ends of the main body portion 43A toward the back wall 12D. The cord heater is arranged on the surface of the main body 43A on the side facing the back wall 12D, and the fan 46 (blower mechanism) blows air in a direction crossing the rotation axis of the drum type rotary blade. It is equipped with a cross-flow type fan. According to the above configuration, since the air in the refrigerator is circulated by the cross flow type fan 46, the air volume is relatively increased while the static pressure is reduced as compared with the case where a propeller fan, a blower, or the like is used. Can send air. It is also preferable in that a wide and uniform airflow suitable for the cross-sectional shape of the ducts 41 and 43 can be created. As a result, the air heated by the heating unit 40 can be efficiently circulated in the refrigerator while preventing the stored food from drying. As a result, a heating storage 1 that is excellent in heating efficiency and heating efficiency and is suitable for heating cooked foods is realized. Such a hot storage 1 is also advantageous in that, for example, it is not necessary to provide a humidifying member for humidifying the inside of the storage.

In the above-mentioned heat storage 1, cord heaters are used as the first and second heating means, and are arranged in a high area in the vertical direction on the surface of the inner duct 41 and the outer duct 43 on the side facing the back surface. Has been done. Although the cord heater is not bulky, it generates a large amount of heat, and if the cord heater is densely arranged on the heater panel, it may cause abnormal overheating of the heating unit 40, cause a local rise in the temperature inside the refrigerator, or cause temperature unevenness. There was a risk of becoming. On the other hand, the hot storage 1 disclosed here has a double duct 41 and 43 structure, and the cord heater is divided into an inner duct 41 and an outer duct 43 and arranged to avoid overcrowding. Further, the cord heater is separately arranged on the right side portion and the left side portion of the inner duct 41 and the outer duct 43. Further, the inner duct 41 and the outer duct 43 are provided with ventilation holes 41C and 43C in the vertical direction to promote circulation of heated air in the refrigerator. In particular, in the outer duct 43, the ventilation holes 43C are arranged in the vertical direction between the right side portion and the left side portion provided with the cord heater. With such a configuration, the warm storage 1 disclosed here adopts a cord heater as a heating means, but causes abnormal overheating of the heating unit 40, local rise in the temperature inside the storage, and temperature unevenness. It is said that it can be suitably suppressed.

In the above-mentioned heat storage 1, the inner duct 41 and the outer duct 43 are each made of an aluminum alloy. Since aluminum or an aluminum alloy has high thermal conductivity and is relatively lightweight, the inner duct 41 and the outer duct 43 are made of aluminum or an aluminum alloy to form an inner heater 42 (first heating means) and. The heat generated by the outer heater 44 (second heating means) can be efficiently propagated to the inner duct 41 and the outer duct 43, and the heat is easily transferred from the inner duct 41 and the outer duct 43 to the surrounding air. It has become. Further, the double duct including the inner duct 41 and the outer duct 43 can be made lighter. As a result, the heating efficiency of the air inside the warm storage 1 can be further increased, and the weight of the hot storage 1 can be reduced.

<< Embodiment 2 >>
The hot storage according to the second embodiment will be described with reference to FIGS. 15 to 17. This heat storage is different from the heat storage 1 of the first embodiment in that the wind direction plate 50 is attached to the front surface of the inner duct 141 and the back wall 112D. Since the other configurations of the hot storage are the same as those of the hot storage 1 according to the first embodiment, only the configurations different from the hot storage 1 of the first embodiment will be described below, and the same configuration will be implemented. The same reference numerals are given to those of the first embodiment, and the description of the action and effect thereof will be omitted (the same applies to the third and subsequent embodiments).

In the present embodiment, the inner duct 141 and the back wall 112D are attached with a wind direction plate 50 extending toward the outer duct 43 and the inner duct 141, respectively, as shown in FIG. The wind direction plate 50 has a shape like a rectangular flat stainless steel plate bent so that the angle formed by the angle exceeds 90 degrees (for example, 100 degrees or more and 150 degrees or less, for example 120 degrees). .. Then, in the wind direction plate 50, the flat surface portion 50A on one side of the bent portion is fixed to the inner duct 141 or the back wall 112D, so that the flat surface portion 50B on the other side is fixed from the inner duct 141 or the back wall 112D. It is sticking out forward. At this time, the wind direction plate 50 is fixed to the inner duct 141 or the back wall 112D in a posture in which the plate surface of the flat surface portion 50B on the other side is inclined in a front view.

For example, as shown in FIG. 16, the wind direction plate 50 attached to the front surface of the back wall 112D tilts downward toward the right on the right side of the back wall 112D, and tilts toward the left on the left side of the back wall 112D. It is fixed in a downward leaning posture. As a result, the air flowing through the first air flow path F1 is changed in flow toward the inner duct 141, and easily comes into contact with the inner duct 141, so that the heating efficiency of the air is improved. Further, the air flowing through the first air flow path F1 flows toward both left and right ends, and is easily sent to the second air flow path F2 through the ventilation hole 41C formed in the side surface portion 41B of the inner duct 141. It has become.

Further, as shown in FIG. 17, for example, the wind direction plate 50 attached to the front surface of the inner duct 141 is fixed in the central portion of the inner duct 141 in a posture of tilting downward toward the center in the width direction, and the inner duct 141 is fixed. In the left part of the above, it is fixed in a posture of tilting downward toward the left, and in the left part, it is fixed in a posture of tilting downward toward the left. As a result, the air flowing through the second air flow path F2 is changed in flow toward the outer duct 43, and easily comes into contact with the outer duct 43, so that the heating efficiency of the air is improved. Further, the air flowing through the central portion of the second air flow path F2 is changed toward the center in the width direction, and the inside of the refrigerator is passed through the ventilation hole 43C formed in the central portion of the main body portion 43A of the outer duct 43. It is easier to send to. Further, the air flowing through the left side portion and the right side portion of the second air flow path F2 is changed in flow toward the left and right ends, and is sent into the refrigerator through the ventilation hole 43C formed in the side surface portion 43B of the outer duct 43. It is easy to get rid of.

In the above-mentioned heat storage, a wind direction plate 50 extending toward the outer duct 43 is provided on the surface (here, the front surface) of the inner duct 141 toward the outer duct 43. Further, in the above-mentioned warm storage, a wind direction plate 50 extending toward the inner duct 141 is provided on the surface (here, the front surface) of the back wall 112D on the side toward the inner duct 141.
According to such a configuration, the downward air flow in the inner duct 141 and the outer duct 43 can be changed in the direction toward the plate surface of the inner duct 141 and the outer duct 43. As a result, the contact efficiency between the inner duct 141 and the outer duct 43 and the air flowing in the duct can be improved, and the air flowing in the duct can be efficiently heated. Further, the air flowing in the inner duct 141 (first air flow path F1) can be efficiently sent from the ventilation hole 41C into the outer duct 43, and the inside of the outer duct 43 (second air flow path F2) can be efficiently sent. The flowing air can be efficiently sent into the refrigerator from the ventilation hole 43C. As a result, the heating efficiency and circulation efficiency of the air in the refrigerator can be further improved, and the temperature unevenness in the refrigerator can be suitably suppressed. The installation mode of the wind direction plate 50 is not limited to the above example, and a similar effect can be obtained if the air flow toward the downstream in the first air flow path F1 and the second air flow path F2 can be disturbed. be able to.

<< Embodiment 3 >>
The control of the heat storage according to the third embodiment will be described with reference to FIG. In the heat storage of the third embodiment, the control mode of the heating unit 40 by the control device 200 is different from the examples of the first embodiment and the second embodiment. Other configurations may be the same as those of the first and second embodiments, and the description of the same configurations, actions and effects will be omitted.
In the heating chamber of the third embodiment, when the heating temperature TA becomes a high temperature (for example, 90 ° C.) exceeding the first temperature T1 (for example, 80 ° C.) where abnormal overheating of the heating unit 40 may occur. (TA> T1) First, as in the first embodiment, the control device 200 continuously operates the inner heater 42 and the outer heater 44 to start heating the air in the refrigerator. Then, when the temperature inside the refrigerator detected by the thermistor 48 reaches the first temperature T1, the control device 200 changes the operation of the heating unit 40.

Specifically, as shown in FIG. 12, the control device 200 stops the operation of the inner heater 42 and the outer heater 44 when the temperature inside the refrigerator reaches the first temperature T1 (here, 80 ° C.). Then, when the temperature inside the refrigerator detected by the thermistor 48 drops by a predetermined temperature (for example, 2 ° C.) from the time when the operation is stopped (80 ° C.) (that is, when the temperature reaches 78 ° C.), the control device 200 sets the inner heater 42 and The operation of the outer heater 44 is restarted.
Next, when the temperature inside the refrigerator detected by the thermistor 48 reaches a temperature higher by a predetermined temperature (for example, 4 ° C.) than when the operation is stopped (that is, 80 ° C.), the control device 200 reaches 84 ° C. Then, the operation of the inner heater 42 and the outer heater 44 is stopped again.

Further, the control device 200 is detected by the thermistor 48 when the temperature inside the refrigerator detected by the thermistor 48 is lowered by a predetermined temperature (2 ° C.) from the time when the operation is stopped (84 ° C.) (for example, when the temperature reaches 82 ° C.). The inner heater 42 and the outer heater 44 are operated until the temperature inside the refrigerator reaches a temperature (88 ° C.) higher than that when the operation is stopped (that is, 84 ° C.) by a predetermined temperature (4 ° C.). As described above, the control device 200 is configured to operate the inner heater 42 and the outer heater 44 step by step by a predetermined temperature range (for example, 4 ° C.) when the temperature inside the refrigerator reaches the first temperature T1. There is. When the temperature inside the refrigerator reaches the heat storage temperature TA, the control device 200 executes the normal heat retention operation.

The above-mentioned warm storage is provided with a thermistor 48 (temperature detecting means) for detecting the temperature inside the storage (temperature of the inside air) and a control device 200 for controlling the operation of the heating unit 40. The control device 200 has an inner heater 42 (first heating means) and an outer heater until the internal temperature detected by the thermistor 48 reaches the first temperature T1 which is lower than the preset heating temperature TA. 44 (second heating means) is continuously operated. Then, after the temperature inside the refrigerator detected by the thermistor 48 reaches the first temperature T1, the inner heater 42 and the outer heater 44 are intermittently operated so that the inside air is heated stepwise by a predetermined temperature range. It has a configuration to make it.

In the heating storage having the above configuration, for example, when the heating temperature TA is high, the inner heater 42 (first heating means) and the outer heater 44 (second heating means) are more than the air (inside air) in the storage. Can also be significantly overheated. However, according to the above configuration, after the temperature inside the refrigerator reaches, for example, the first temperature at which the temperature of the heating means is likely to deviate from the temperature inside the refrigerator, the heating means is intermittently operated to raise the temperature inside the refrigerator. Can be gradually increased by a predetermined temperature range. As a result, it is possible to suppress the discrepancy between the temperature of the heating means and the temperature inside the refrigerator, and as a result, for example, it is not necessary to set the heat resistant temperature of the heating unit 40 excessively high, and the durability of the heating unit 40 is improved. Can be enhanced. Further, according to a warm storage equipped with a safety device (for example, an overheat prevention device using a thermostat 45 or the like), it is possible to prevent the safety device from malfunctioning.

<< Embodiment 4 >>
The control of the hot storage according to the fourth embodiment will be described with reference to FIG. The heating storage of the fourth embodiment is different from the examples of the first to third embodiments in that the failure detection of the heating unit 40 by the control device 300 is performed. Other configurations may be the same as those of the first to third embodiments, and the description of the same configurations, actions and effects will be omitted.

The warm storage of the fourth embodiment is connected to an external power source by the user, and when the main power switch 156 is turned on (S01), energization of the inner heater 42 and the outer heater 44 is started, and the inside of the storage is started. The heating of the air is started. Further, the control device 1200 measures the elapsed time from the start of energization (in other words, the start of heating of the air in the refrigerator) in a predetermined time span by the timer function (timekeeping means). , Thermistor 48 detects the temperature inside the refrigerator.

Then, in the control device 300, the temperature inside the refrigerator 48 detected by the thermistor 48 is set to a predetermined temperature before the elapsed time from the start of heating reaches a predetermined set time (for example, 2 hours) by the timer function (NO in S03). (For example, it is determined whether or not the temperature has reached 80 ° C.) (S02). Here, when the temperature inside the refrigerator reaches a predetermined temperature (YES in S02), the control device 300 states that the air inside the refrigerator is being heated smoothly, and the inner heater 42 and the outer heater 44 are normal. Judgment (S04). On the other hand, when the temperature inside the refrigerator has not reached the predetermined temperature (NO in S02) and the elapsed time from the start of heating reaches the predetermined set time (YES in S03), the air in the refrigerator is heated. Is not performed smoothly, and the control device 300 determines that at least one of the inner heater 42 and the outer heater 44 is out of order (S05). If it is determined in step S05 that the heater is out of order, the control device 300 displays an error code on the display unit 152 and turns on a warning light, so that the heaters 42 and 44 are out of order. Is notified.

According to the above configuration, a failure of the inner heater 42 (first heating means) and the outer heater 44 (second heating means) can be automatically detected and promptly notified to the user or the like. As a result, for example, when the inner heater 42 or the outer heater 44 fails due to a disconnection or the like, the user can quickly grasp the situation and immediately respond to the failure of the inner heater 42 or the outer heater 44. be able to.

<< Embodiment 5 >>
The control of the heat storage according to the fifth embodiment will be described with reference to FIG. The hot storage of the fifth embodiment is different from the examples of the first to fourth embodiments in that the control device 400 detects a failure different from that of the fourth embodiment. Other configurations may be the same as those of the first to fourth embodiments, and the description of the same configurations, actions and effects will be omitted.

The warm storage of the fifth embodiment is connected to an external power source by the user, and when the main power switch 156 is turned on (S11), energization of the inner heater 42 and the outer heater 44 is started, and the inside of the storage is started. The heating of the air is started. The control device 400 measures the elapsed time from the start of energization (in other words, the start of heating of the air in the refrigerator) in a predetermined time span (for example, every 30 seconds) by a timer function (timekeeping means). The temperature inside the refrigerator is detected by the thermistor 48. Further, the control device 400 calculates the temperature gradient for the change in the temperature inside the refrigerator from the detection result of the temperature inside the refrigerator.

Then, as shown in FIG. 20, the control device 400 is in the refrigerator before the elapsed time from the start of heating measured by the timer function reaches a predetermined set time (for example, 30 minutes) (NO in S13). It is determined whether or not the temperature gradient of the temperature has reached a predetermined threshold value (for example, 1 ° C./30 seconds) (S12). Here, when the temperature gradient reaches the threshold value (YES in S12), the control device 400 determines that the air in the refrigerator is satisfactorily heated and the inner heater 42 and the outer heater 44 are normal (YES). S14). On the other hand, when the temperature gradient has not reached the threshold value (NO in S012) and the elapsed time from the start of heating reaches a predetermined set time (YES in S03), the air in the refrigerator is heated. Is not performed smoothly, and the control device 400 determines that at least one of the inner heater 42 and the outer heater 44 is out of order (S15). If it is determined in step S15 that the heater is out of order, the control device 400 displays an error code on the display unit 152 and turns on a warning light to cause the heaters 42 and 44 to fail in the surroundings. Is notified.

According to the above configuration, since the failure is determined by calculating the temperature gradient of the temperature inside the refrigerator, the determination can be made in a relatively short time (for example, 30 minutes) as compared with the case of the fourth embodiment. .. Further, for example, when the environmental temperature is extremely low, the temperature gradient of the internal temperature in the refrigerator at the initial stage of heating tends to be low, but it depends on the environmental temperature by setting an appropriate set time until it is determined to be a failure. The effect on the temperature gradient can be reduced. As a result, the same effect as that of the fourth embodiment can be obtained in a shorter time.

<< Embodiment 6 >>
The hot storage according to the sixth embodiment will be described with reference to FIG. 21. As shown in FIG. 15, the heat storage of the sixth embodiment is additionally provided with a dedicated switch 154S (an example of an input unit) for measuring the heat storage time on the operation panel 250. Further, the control device 500 is provided with a function of measuring the elapsed time from the time when the switch is pressed. Other configurations may be the same as those of the first to fifth embodiments, and the description of the same configurations, actions and effects will be omitted.

That is, when the switch 154S is pressed and a signal is input, the control device 500 of the warm storage measures the elapsed time from the time when the switch is pressed by the timer function. Then, the control device 500 sets the elapsed time measured by the timer function as a desirable time until the food after cooking is eaten in the preset first time (for example, in the above-mentioned "mass cooking facility hygiene management manual"). When the indicated time (2 hours) is reached, a message indicating that the predetermined elapsed time has been reached is displayed on the display unit 152 (an example of the notification means), a warning light is turned on, and a buzzer (an example of an alarm device) is displayed. ) Is sounded to notify the surroundings.

Specifically, the user places a plate on which cooked food is served on a tray 25 (hotel pan) in a hotel kitchen or the like, and the temperature inside the refrigerator becomes a preset heating temperature TA. It is inserted into the tray guide 23 of the hot storage and stored. Then, the user accommodates all the trays 25 in the heat storage, closes the door 30, and then presses the switch 154S. As a result, the control device 500 of the hot storage measures the hot storage time of the above-mentioned food in the hot storage. Then, when the storage time reaches the first hour (here, 2 hours), the display unit 152 (an example of the notification means) displays a message indicating that the predetermined elapsed time has been reached, and turns on the warning light. And notify the surroundings. At this time, if the food is not served until the warming time reaches the first hour, the user can take measures such as disposing of the food. Thereby, for example, in the case of performing hygiene control according to HACCP, it is possible to easily carry out appropriate temperature control of the cooked food.

<< Embodiment 7 >>
The warm storage according to the seventh embodiment will be described with reference to FIG. 22. In the warm storage of the seventh embodiment, the mounting hole 136C of the packing support member 136 is a long hole that is long in the direction in which the upper door 31 and the lower door 32 are lined up (that is, in the vertical direction). Therefore, it is different from the example of the sixth embodiment. Other configurations may be the same as those of the first to sixth embodiments, and the description of the same configurations, actions and effects will be omitted.

As shown in FIG. 22, the cooling chamber 310 has an elongated mounting hole 136C that is long in the vertical direction. With such a configuration, the mounting position of the packing support member 136 with respect to the doors 31, 32 and the packings 35D and 35E is set in the vertical direction in a state where the packing support member 136 is temporarily fixed to the doors 31 and 32 by the fastener 36D. Can be fine-tuned with. As a result, for example, even if the product dimensions of the packings 35D and 35E vary, or the mounting mode of the lower packing 35D and the upper packing 35E to the upper door 31 and the lower door 32 varies. The displacement amount of the tubular portion 34A of the packings 35D and 35E can be adjusted by the support member 136, and as a result, the contact condition between the lower packing 35D and the upper packing 35E can be adjusted. In other words, the airtightness between the lower packing 35D and the upper packing 35E when the door is closed can be suitably adjusted.

<< Embodiment 8 >>
The warm storage according to the eighth embodiment will be described with reference to FIGS. 23 to 26. The warm storage of the eighth embodiment is different from the examples of the first to seventh embodiments in the closed structure of the gap between the upper door 31 and the lower door 32. Other configurations may be the same as those of the first to seventh embodiments, and the description of the same configurations, actions and effects will be omitted.

23 and 24 are views of the upper door 31 and the lower door 32 as viewed from the rear side, and for reference, the outline of the heating chamber and the outline of the opening of the heating chamber 11 are drawn by virtual lines. It is also shown.
A lower packing 135D is attached to the lower edge of the upper door 31 and an upper packing 135E is attached to the upper edge of the lower door 32 to the upper door 31 and the lower door 32 of the heat storage. The lower packing 135D and the upper packing 135E each have a long rectangular sheet shape as shown in FIG. 26, and are formed by a long plate piece-shaped packing holding member 236 as shown in FIG. 24 and the like. It is attached to the back surfaces 31A and 32A of the doors 31 and 32, respectively. In FIG. 26, the packings 135D and 135E are shown separated in the vertical direction (the same applies to the following embodiments). Although these packings 135D and 135E are made of a flexible material such as silicone rubber, they are oriented so that the longitudinal direction is horizontal and the lateral direction is along the vertical direction, for example, like the upper packing 135E. When the lower end is fixed, it is supposed to have enough rigidity to stand on its own without bending. As shown in FIG. 24, the longitudinal dimension of the lower packing 135D and the upper packing 135E is smaller than the width dimension of the heating chamber main body 10 in order to cover the opening of the heating chamber 11 in the width direction. It is formed larger than the dimension in the width direction of. The dimensions of the lower packing 135D and the upper packing 135E in the lateral direction are such that the lower end of the lower packing 135D and the upper end of the upper packing 135E overlap when attached to the upper door 31 and the lower door 32 in the closed door state. There is.

As shown in FIG. 25, the packing holding member 236 has a step slightly smaller than the thickness of the packing 135D and 135E, and the upper door 31 and the upper door 31 and the packing holding member 236 are held in a state where the packing 135D and 135E are suppressed in the step portion without damaging the packing 135D and 135E. It is fixed to the lower door 32. The packing holding member 236 has an opening in the longitudinal direction (width direction) so as to fit inside the opening of the heating chamber 11 in order to ensure the airtightness between the doors 31 and 32 of the heating storage and the opening edge. It is designed to be smaller than the width dimension.

Since the packings 135D and 135E having the above configuration have a simple shape, they can be manufactured at low cost and can be easily attached, which is advantageous. Further, in the above-mentioned warm storage, the lower end of the lower packing 135D and the upper end of the upper packing 135E overlap each other in the closed state, so that the upper door 31 and the lower door 32 can be hermetically sealed. Further, when opening either the upper door 31 or the lower door 32, one packing 135D or 135E can bend and get over the other packing 135E or 135D as needed, so that the doors 31 and 32 can be smoothly operated. It can be opened and closed.

<< Embodiment 9 >>
The warm storage according to the ninth embodiment will be described with reference to FIGS. 27 and 28. The heat storage of the ninth embodiment is different from the heat storage of the eighth embodiment in that a cover member 37 is further provided in the gap between the upper door 31 and the lower door 32. Other configurations may be the same as those of the first to eighth embodiments, and the description of the same configurations, actions and effects will be omitted.

FIG. 27 shows that in the heat storage chamber of the eighth embodiment, when the doors 31 and 32 were opened and closed, one packing 135D and 135E did not completely get over the other packing 135E and 135D, and they were misplaced in the middle of the width direction. It is (A) sectional view and (B) front view which show the (twisted) state. As described above, even if the lower packing 135D and the upper packing 135E are misaligned at the overlapping portion, there is a problem that the appearance is not good, although the warming effect of the hot storage is not significantly affected. Therefore, the warm storage of the ninth embodiment is a cover that hides at least one of the upper door 31 and the lower door 32 (in this example, the upper door 31) so that the overlapping portions of the packings 135D and 135E are not exposed to the front. It includes a member 37.

As shown in FIG. 28, the cover member 37 is a long plate material having an L-shaped cross section, and the other flat surface portion is in a posture of hanging down on the front side of the upper door 31, and one flat surface portion is the upper door. It is fixed to the lower side surface 32E of 31. The dimensions of the cover member 37 in the longitudinal direction (width direction) are similar to or slightly larger than the dimensions of the lower packing 135D and the upper packing 135E in the longitudinal direction. The vertical dimension of the other flat portion of the cover member 37 can hide the misplaced parts of the packings 135D and 135E in the misplaced state from the front, and swings and closes the upper door 31 and the lower door 32 independently. The dimensions should be such that they do not interfere with the lower door 32 (the door to which the cover member 37 is not attached) when the door is moved. As a result, when the lower packing 135D and the upper packing 135E are misaligned at the overlapping portion, it is possible to avoid a situation in which the appearance is deteriorated.

<< Embodiment 10 >>
The lower packing 235D of the upper door 31 and the upper packing 235E of the lower door 32 according to the tenth embodiment will be described with reference to FIGS. 29 and 30. The tenth embodiment is different from the eighth and nine embodiments in that the slits S1 are provided in the packings 235D and 235E that seal the gap between the upper door 31 and the lower door 32. Other configurations may be the same as those of the first to nine embodiments, and the description of the same configurations, actions and effects will be omitted.

As shown in FIG. 29, the lower packing 235D and the upper packing 235E of the tenth embodiment have the lower end of the lower packing 235D and the upper end of the upper packing 235E in a posture attached to the doors 31 and 32. Linear slits S1 are provided at predetermined intervals, respectively. The positions of the slits S1 provided in the lower packing 235D and the upper packing 235E may be the same in the width direction or may be different positions. Preferably, the slits S1 are provided at different positions in the width direction. The depth of the slit S1 may be slightly larger than the dimension in which the lower packing 235D and the upper packing 235E overlap in the vertical direction when the packings 235D and 235E are attached to the doors 31 and 32.

If the overlap between the lower packing 235D and the upper packing 235E is misplaced in the middle of the width direction, as shown in FIG. 28, the packings 235D and 235E can be greatly bent in the front-rear direction at the misplaced portion. However, according to the above configuration, when the lower packing 235D and the upper packing 235E are misplaced in the middle of the width direction, the force acting on the bending portion is released in the slit S1, and as shown in FIG. 30, the lower part is released. The packing 235D and the upper packing 235E are fitted in the slit S1 and the bending is eliminated. As a result, it is possible to improve the airtightness between the upper door 31 and the lower door 32 as compared with the case where the packings 235D and 235E are greatly bent in the front-rear direction and enter each other. The slit S1 may be provided only in either the lower packing 235D or the upper packing 235E (the same applies to the following embodiments).

<< Embodiment 11 >>
The lower packing 335D of the upper door 31 and the upper packing 335E of the lower door 32 according to the eleventh embodiment will be described with reference to FIG. 31. In the eleventh embodiment, the shapes of the slits S2 formed in the lower packing 335D and the upper packing 335E are different from those in the tenth embodiment. Other configurations may be the same as those of the first to tenth embodiments, and the description of the same configurations, actions and effects will be omitted.

In the lower packing 335D and the upper packing 335E of the eleventh embodiment, as shown in FIG. 31, the innermost part (base end portion) of the linear slit S2 is a round hole. With such a configuration, even if an external force acts in the opposite direction on both sides of the slit S2 due to the opening and closing of the doors 31 and 32, the situation where the packings 235D and 235E are torn in the slit S2 is suppressed. .. Thereby, the durability of the lower packing 335D and the upper packing 335E can be enhanced.

<< Embodiment 12 >>
The lower packing 435D of the upper door 31 and the upper packing 435E of the lower door 32 according to the twelfth embodiment will be described with reference to FIG. 32. In the twelfth embodiment, the form of the slit S3 formed in the lower packing 435D and the upper packing 435E is different from the embodiments 10 and 11. Other configurations may be the same as those of the first to eleventh embodiments, and the description of the same configurations, actions and effects will be omitted.

As shown in FIG. 32, the lower packing 435D and the upper packing 435E of the twelfth embodiment have different densities of the linear slits S3 in the width direction. That is, the number of slits S3 provided in the lower packing 435D and the upper packing 435E is increased as they approach the hinge mechanisms 31D and 32D of the doors 31 and 32 (in this example, toward the left) in the width direction. ing. In other words, it is designed so that the distance between the adjacent slits S3 becomes smaller as the hinge mechanisms 31D and 32D are approached. In the region close to the hinge mechanisms 31D and 32D, the turning radius when opening and closing the doors 31 and 32 is small, so when the packings 235D and 235E are bent due to the misplacement of the packings 235D and 235E, the slits S3 that eliminate this are misplaced. A situation may occur that does not exist in the vicinity of the part. However, according to the above configuration, since the slits S3 are provided at high density in the regions where the turning radii of the doors 31 and 32 are small, the slits S3 are easily arranged in the bent portions of the packings 235D and 235E. As a result, the bending of the packings 235D and 235E can be suitably eliminated in the slit S3 portion.

<< Embodiment 13 >>
The lower packing 535D of the upper door 31 and the upper packing 535E of the lower door 32 according to the thirteenth embodiment will be described with reference to FIG. 33. In the thirteenth embodiment, the shapes of the free ends of the lower packing 535D and the upper packing 535E are different from those of the first embodiment to the twelfth embodiment. Other configurations may be the same as those of the first to the twelfth embodiments, and the description of the same configurations, actions and effects will be omitted.

In the lower packing 535D and the upper packing 535E of the thirteenth embodiment, the slits S4 are provided at the same position in the vertical direction as shown in FIG. 33. Further, the slit S4 is designed so that the distance between the adjacent slits S3 becomes smaller as it approaches the hinge mechanisms 31D and 32D (in this example, as it goes to the left). The lower end of the lower packing 535D and the upper end of the upper packing 535E have a zigzag shape in which the shape is concave at the position of the slit S4 in the vertical direction and is convex between the adjacent slits S4. According to such a configuration, the area of the overlapping portion (in other words, the contact area) of the lower packing 535D and the upper packing 535E is reduced, and the contact resistance for eliminating the bending in the misplaced portion is reduced. As a result, the bending at the overlapping portion between the lower packing 535D and the upper packing 535E can be eliminated more smoothly. In this example, the tip shapes of the lower packing 535D and the upper packing 535E are zigzag, but the notch shape of the tip of the packings 535D and 535E is not limited as long as the above contact resistance can be reduced.

<< Embodiment 14 >>
The lower packing 635D of the upper door 31 and the upper packing 635E of the lower door 32 according to the fourteenth embodiment will be described with reference to FIG. 34. In the 14th embodiment, the shapes of the lower packing 635D and the upper packing 635E are different from those of the first embodiment to the thirteenth embodiment. Other configurations may be the same as those of the first to thirteenth embodiments, and the description of the same configurations, actions and effects will be omitted.

As shown in FIG. 34, the lower packing 635D of the fourteenth embodiment gradually becomes smaller in the vertical direction from one end (for example, the right end) in the width direction to the other end (for example, the left end). Designed for. On the other hand, the upper packing 635E is designed so that the vertical dimension gradually increases from one end (right end) in the width direction to the other end (left end). The dimensions of the lower packing 635D and the upper packing 635E overlapping in the vertical direction are the same in the width direction. Further, the lower packing 635D and the upper packing 635E do not have a slit.

According to such a configuration, the overlapping portion between the lower packing 635D and the upper packing 635E is inclined instead of horizontally, and the overlapping portion is displaced in the vertical direction by opening and closing the doors 31 and 32. As a result, when the lower packing 635D and the upper packing 635E are misplaced, the force acting on the bending is easily released, and the misplacement (twisting) between the lower packing 635D and the upper packing 635E can be suitably eliminated. can. In the example shown in FIG. 34, the overlap of the packings 635D and 635E is tilted downward as it goes to the right, but in the mode of tilting the overlapped portion, the overlapped portion is formed by opening and closing the doors 31 and 32. It is not limited to the range of displacement in the vertical direction. For example, the overlapping portions of the packings 635D and 635E may be tilted downward toward the left, or may be tilted downward toward the center in the width direction (V-shaped), and may be tilted at both ends in the width direction. It may be tilted downward (character-shaped).

<< Embodiment 15 >>
The lower packing 735D of the upper door 31 and the upper packing 735E of the lower door 32 according to the fifteenth embodiment will be described with reference to FIG. 35. In the fifteenth embodiment, the shapes of the lower packing 735D and the upper packing 735E are different from those of the first embodiment to the fourteenth embodiment. Other configurations may be the same as those of the first to the fourteenth embodiments, and the description of the same configurations, actions and effects will be omitted.

FIG. 35 (A) is a cross-sectional view in a state where the lower packing 735D is fixed to the lower surface of the upper door 31 and the upper packing 735E is fixed to the upper surface of the lower door 32, and the solid line in FIG. 35 (B) is the lower packing 735D. And a perspective view showing only the upper packing 735E is shown, and the virtual line shows the state of the lower packing 735D when the upper door 31 is opened. As shown in FIG. 35, the upper packing 735E of the lower door 32 is thicker than the sheet-shaped packing of the 8th to 14th embodiments, has relatively high rigidity, and is lower at the lower end surface. It is fixed to the upper surface of the door 32 with an adhesive, double-sided tape, or the like. The dimensions of the upper packing 735E in the longitudinal direction are the same as those of the sheet-shaped packing of Embodiments 8 to 14, but the dimensions in the lateral direction are compared with the sheet-shaped packings of Embodiments 8 to 14. Is small. Further, the lower packing 735D of the upper door 31 has a form in which a thin thin portion 735L is extended from the lower end of the upper packing 735E, and an adhesive or the like is applied to the lower surface of the upper door 31 at the upper end surface. It is stuck. The thickness of the thin portion 735L is thin, and it is easily bent as compared with the sheet-shaped packing of the 8th to 14th embodiments.

When the door is closed, the thick portion of the lower packing 735D does not come into contact with the upper packing 735E, but the thin portion 735L extending downward from the thick portion of the lower packing 735D comes into contact with the upper end of the upper packing 735E from behind. There is. With such a configuration, the space between the upper door 31 and the lower door 32 can be sealed by the lower packing 735D and the upper packing 735E. When the upper door 31 is closed after the lower door 32 is closed, the thin-walled portion 735L also seals the gap between the upper door 31 and the lower door 32 by abutting the upper end of the upper packing 735E from the front. be able to. Further, since the rigidity of the thin portion 735L of the lower packing 735D and the upper packing 735E are significantly different, the lower packing 735D (thick portion) and the upper packing 735E may be misaligned (twisted) in the front-rear direction. sea bream. As a result, the gap between the upper door 31 and the lower door 32 can be more reliably sealed. Further, since the thin portion 735L has higher flexibility, the contact resistance with the upper packing 735E can be suppressed to a low level. As a result, the doors 31 and 32 can be opened and closed smoothly. The method of fixing the doors 31 and 32 of the lower packing 735D and the upper packing 735E is not limited to the above example (the same applies to the following embodiments).

<< Embodiment 16 >>
The lower packing 835D of the upper door 31 and the upper packing 835E of the lower door 32 according to the sixteenth embodiment will be described with reference to FIG. 36. In the 16th embodiment, the shapes of the lower packing 835D and the upper packing 835E are different from those of the first embodiment to the fifteenth embodiment. Other configurations may be the same as those of the first to fifteenth embodiments, and the description of the same configurations, actions and effects will be omitted.

FIG. 36 is a cross-sectional view (A) and a front view (B) in a state where the lower packing 835D is fixed to the lower surface of the upper door 31 and the upper packing 835E is fixed to the upper surface of the lower door 32. Both the lower packing 835D and the upper packing 835E have a long triangular prism shape, and the cross section orthogonal to the longitudinal direction thereof forms an isosceles triangle with a narrow base. The lower packing 835D and the upper packing 835E are fixed to the lower surface of the upper door 31 and the upper surface of the lower door 32 with an adhesive or the like on the surface corresponding to the bottom surface. The vertical dimension (dimension corresponding to the height of the isosceles triangle) of the lower packing 835D and the upper packing 835E is such that the tips of the lower packing 835D and the upper packing 835E come into contact with each other when the door is closed. In other words, it is configured to reduce the overlap margin when the door is closed.

According to the above configuration, the lower packing 835D and the upper packing 835E become thinner toward the tip and become more flexible, and the packings 835D and 835E are twisted due to the opening and closing of the doors 31 and 32. It is said to be a difficult structure. Further, the cross-sectional shape of the packings 835D and 835E is triangular, so that the rigidity and the balance between the tip portion (apex side) and the base end portion (bottom side) can be easily maintained even when various materials are used. Can be adjusted.

<< Embodiment 17 >>
The lower packing 935D of the upper door 31 and the upper packing 935E of the lower door 32 according to the 17th embodiment will be described with reference to FIG. 37. In the 17th embodiment, the shapes of the lower packing 935D and the upper packing 935E are different from those of the first embodiment to the 16th embodiment. Other configurations may be the same as those of the first to sixteenth embodiments, and the description of the same configurations, actions and effects will be omitted.

Both the lower packing 935D and the upper packing 935E have a long plate shape having substantially the same width and front-rear dimensions as the doors 31 and 32, and are formed on the lower surface of the upper door 31 and the upper surface of the lower door 32. Each is fixed with an adhesive or the like. The lower packing 935D and the upper packing 935E have a plurality of triangular ridges (seven in FIG. 37) on the surfaces facing each other when the door is closed, and have ridge-shaped ridges extending in the longitudinal direction. The orthogonal cross sections have a zigzag shape as a whole. The lower packing 935D and the upper packing 935E are configured to come into contact with each other at the tip portions of these ridges when the door is closed.

According to the above configuration, when the door is closed, the lower packing 835D and the upper packing 835E abut at the tips of the plurality of ridges, so that a plurality of seals are formed along the thickness direction of the doors 31 and 32. It will be. Further, an air layer is formed between the adjacent ridges. As a result, the airtightness and heat retention (heat insulating property) of the heat storage can be highly improved.

<< Embodiment 18 >>
The warm storage according to the eighteenth embodiment will be described with reference to FIG. 38. In the heat storage chamber of the eighteenth embodiment, the structure of the upper door 131 and the lower door 132 and the closed structure of the gap thereof are different from those of the first embodiment to the seventeenth embodiment. Other configurations may be the same as those of the first to the seventeenth embodiments, and the description of the same configurations, actions and effects will be omitted.

As shown in FIG. 38 (A), the lower end portion of the upper door 131 is provided with a hollow packing chamber 131A extending in the width direction at the central portion in the thickness direction (front-back direction when the door is closed). There is. Both ends of the packing chamber 131A are opened on the left and right side surfaces 31B and 31C of the upper door 131, and the packing chamber 131A is above through a line-shaped opening 131B provided along the width direction at the lower end of the packing chamber 131A. It is open on the lower surface of the door 131. The thickness direction dimension of the packing chamber 131A is larger than the thickness direction dimension of the opening 131B, and the height direction dimension of the packing chamber 131A is designed to be larger than the thickness direction dimension of the packing chamber 131A. There is. Further, the upper surface of the lower door 132 has a chevron shape in which the central portion along the thickness direction projects upward in the width direction. The packing chamber 131A is equipped with a packing 146 that seals between the lower surface of the upper door 131 and the chevron-shaped upper surface of the lower door 132.

As shown in FIG. 38 (B), the packing 146 is generally composed mainly of a long sheet-shaped seal portion 146B corresponding to the widthwise dimensions of the doors 131 and 132, and the short side of the seal portion 146B. A thick head 146A is provided along one end in the direction. The head 146A of this example has an elliptical cross section orthogonal to the longitudinal direction, and a seal portion 146B extends along the long axis thereof. The other end of the seal portion 146B has a tapered shape with tapers on both sides. The thickness direction dimension of the seal portion 146B is smaller than the thickness direction dimension of the opening 131B, the thickness direction dimension of the head 146A is larger than the thickness direction dimension of the opening portion 131B, and the thickness direction of the packing chamber 131A. It is designed to be smaller than the size of. Further, the dimension of the seal portion 146B in the lateral direction (vertical direction) is slightly larger than the dimension from the bottom surface of the packing chamber 131A to the top of the upper surface of the lower door 132 when the door is closed, and the dimension in the height direction of the entire packing 146. Is designed to be smaller than the dimension from the ceiling surface of the packing chamber 131A when the door is closed to the top of the upper surface of the lower door 132. The packing 146 is made of a material having a slightly higher rigidity than the packings 34 of the first to 17th embodiments, so that the packing 146 is less likely to bend, has low friction, and has good slidability. Examples of such a material include, but are not limited to, a low-sliding silicone resin, a fluororesin, a nitrile / silicone rubber, and the like.

The packing 146 is formed by inserting the head 146A into the packing chamber 131A in a state where the seal portion 146B is inserted into the opening 131B from the opening at the end in the width direction of the upper door 131. It is attached to the lower end of. In the open door state, as shown by the solid line in FIG. 38 (A), the head 146A of the packing 146 is caught by the bottom of the packing chamber 131A due to its own weight, and the seal portion 146B hangs down from the upper door 131. When the door is closed, the lower end of the sealing portion 146B of the packing 146 first comes into contact with the upper surface of the lower door 132, and the lower end is gradually displaced upward along the upper surface. As shown by a virtual line in 38 (A), the packing 146 is lifted by the upper surface of the lower door 132 and is arranged upward inside the packing chamber 131A. As a result, the space between the upper door 131 and the lower door 132 is sealed. The openings at both ends in the width direction of the packing chamber 131A after the packing 146 is mounted may be sealed with a lid member or the like.

According to the above configuration, the packing 146 arranged inside the upper door 131 can move up and down inside the packing chamber 131A. That is, when the door is closed, the packing 146 comes into contact with the upper surface of the lower door 132 at the lower end below the packing chamber 131A, and then is pushed up by the lower door 132 and moves above the packing chamber 131A to a wide height position. Can be maintained in a sealed state. Since the vertical movement of the packing 146 is performed by the weight of the packing 146 and the opening / closing operation of the doors 131 and 132, no other driving force (for example, the magnetic force in the embodiment described later) or the like is required. As a result, the space between the upper door 131 and the lower door 132 can be sealed without being affected by the variation in the manufacturing dimensions of the packing 146 and the variation in the dimensions of the gap between the upper door 131 and the lower door 132.

<< Embodiment 19 >>
The warm storage according to the nineteenth embodiment will be described with reference to FIG. 39. In the warm storage of the nineteenth embodiment, the shape of the packing 246 is different from that of the eighteenth embodiment. Other configurations may be the same as those of the first to the eighteenth embodiments, and the description of the same configurations, actions and effects will be omitted.

As shown in FIG. 39B, the packing 246 has a different shape of the head portion 246A and a shape of the tip portion of the sealing portion 246B as compared with the packing 146 of the embodiment 18, and the length of the head portion 246A is different. The cross section orthogonal to the direction is substantially circular, and the cross section at the tip of the seal portion 246B is also substantially circular. The thickness direction and height direction dimensions (that is, corresponding to the diameter) of the head 246A are larger than the thickness direction dimension of the opening 131B and smaller than the thickness direction dimension of the packing chamber 131A. The dimensions in the thickness direction and the height direction (that is, corresponding to the diameter) of the substantially circular portion at the tip of the seal portion 246B are set to be slightly larger than the dimensions in the thickness direction of the seal portion 246B. According to such a configuration, the tip of the seal portion 246B is prevented from being worn due to the sliding between the tip of the seal portion 246B of the packing 246 and the upper surface of the lower door 132 due to the opening and closing of the doors 131 and 132. As a result, the durability of the packing 246 can be lengthened.

<< Embodiment 20 >>
The hot storage according to the twenty-first embodiment will be described with reference to FIG. 40. The warm storage of the 20th embodiment is different from the 1st to 19th embodiments in the sealed structure between the upper door 31 and the lower door 32. Other configurations may be the same as those of the first to the nineteenth embodiments, and the description of the same configurations, actions and effects will be omitted.

A brush-like member 346 in which a large number of fibrous hairs are densely transplanted is fixed to the lower surface of the upper door 31 and the upper surface of the lower door 32 so that the fiber axial direction is along the vertical direction. The brush-shaped member 346 is provided over the width direction of the doors 31 and 32, and the hairs are arranged so as to form a plurality of rows in the thickness direction of the doors 31 and 32. The brush-like member 346 provided on the lower surface of the upper door 31 and the brush-like member 346 provided on the upper surface of the lower door 32 have a length in which the tips of the brush-like members abut each other (overlap in front view) when the door is closed. Designed for. The brush-shaped member 346 is not particularly limited in the material constituting the hair, and can be made of, for example, various synthetic resins such as polyethylene and polypropylene.

In the brush-shaped member 346, since the hairs are densely arranged over a plurality of rows, the air flow in the gap between the upper door 31 and the lower door 32 can be blocked. Further, since one hair itself constituting the brush-shaped member 346 is thin, the hair from the upper door 31 and the hair from the lower door 32 can alternately enter the gap, and the brush-shaped member 346 of the upper door 31 can be inserted. And the brush-like member 346 of the lower door 32 do not enter (twist). Therefore, even with such a configuration, the gap between the upper door 31 and the lower door 32 can be sealed.

<< Embodiment 21 >>
The hot storage according to the twenty-first embodiment will be described with reference to FIG. 41. The warm storage of the 21st embodiment is different from the 1st to 20th embodiments in the sealed structure between the upper door 31 and the lower door 32. Other configurations may be the same as those of the first to twenty embodiments, and the description of the same configurations, actions and effects will be omitted.

A flexible cylindrical tubular member 446 is fixed to the lower surface of the upper door 31 and the upper surface of the lower door 32, respectively, over the width direction of the doors 31 and 32 with an adhesive or the like. The tubular member 446 bends when an external force is applied, and can return to its original shape when the external force is removed. The tubular member 446 provided on the lower surface of the upper door 31 and the tubular member 446 provided on the upper surface of the lower door 32 have a substantially circular cross section in the free state when the door is opened. However, when the door is closed, the tube diameter, the thickness of the tube wall, etc. are designed so that the upper door 31 and the lower door 32 can be accommodated in the gap between the upper door 31 and the lower door 32 in a state of being loosened to each other. The material constituting the tubular member 446 is not particularly limited as long as it has the flexibility as described above, and can be made of, for example, various synthetic resins such as polyethylene and polypropylene.

The tubular member 446 provided in the upper door 31 and the lower door 32 is housed in the gap between the upper door 31 and the lower door 32 when the door is closed, so that the air in the gap between the upper door 31 and the lower door 32 can be removed. The flow can be blocked. Even with such a configuration, the gap between the upper door 31 and the lower door 32 can be sealed.

<< Embodiment 22 >>
The warm storage according to the 22nd embodiment will be described with reference to FIG. 42. The warm storage of the 22nd embodiment is different from the 1st to 21st embodiments in the sealed structure between the upper door 31 and the lower door 32. Other configurations may be the same as those of the first to 21st embodiments, and the description of the same configurations, actions and effects will be omitted.

A gel-like member 546A, which is solid but has a gel-like appearance similar to a liquid, is fixed to the lower surface of the upper door 31 with an adhesive or the like over the width direction of the upper door 31. The gel-like member 546A may be easily deformed when an external force is applied, and may return to its original shape when the external force is removed. Such a gel-like member 546A can be typically composed of a gel-like resin having a low crosslink density (for example, silicone gel), but by filling a flexible resin sheet with a liquid. It may be configured. The cross section of the gel-like member 546A along the thickness direction of the door 31 has a semicircular shape in the free state when the door is opened.
An elastic member 546B having elasticity is fixed to the upper surface of the lower door 32 with an adhesive or the like over the width direction of the lower door 32. The elastic member 546B can be made of an elastic material (for example, silicone rubber). The cross section of the elastic member 546B along the thickness direction of the door 32 is semicircular.

When the door is closed, the gel-like member 546A provided on the lower surface of the upper door 31 is deformed while being in contact with the elastic member 546B provided on the upper surface of the lower door 32, and the upper surface of the elastic member 546B and the lower surface of the upper door 31 are formed. It is designed to fit in the state of being squeezed in the meantime. As a result, the air flow in the gap between the upper door 31 and the lower door 32 can be blocked. Further, since the gel-like member 546A is in contact with the elastic member 546B in a loosened state, the gap between the upper door 31 and the lower door 32 is shielded with a large area. As a result, the gap between the upper door 31 and the lower door 32 can be more reliably sealed.

<< Embodiment 23 >>
The warm storage according to the 23rd embodiment will be described with reference to FIG. 43. The warm storage of the 23rd embodiment is different from the 1st to 22nd embodiments in the sealed structure between the upper door 31 and the lower door 32. Other configurations may be the same as those of the first to 22nd embodiments, and the description of the same configurations, actions and effects will be omitted.

An elastic member 646D having elasticity is fixed to the upper surface of the lower door 32 with an adhesive or the like over the width direction of the lower door 32. The elastic member 646D can be made of an elastic material (for example, silicone rubber). The cross section of the elastic member 646D along the thickness direction of the door 32 is rectangular.
On the lower surface of the upper door 31, a deformable member 646A formed by laminating an elastic member 646B having elasticity and a sponge member 646C that can be sponge deformable in this order is formed by an adhesive or the like over the width direction of the upper door 31. It is fixed. The elastic member 646B may be the same as the elastic member 646D of the lower door 32. The sponge member 646C is made of a resin foam and is easily deformed when an external force is applied, and can return to its original shape when the external force is removed. The cross section of the deformable member 646A along the thickness direction of the door 31 has a semicircular shape in the free state when the door is opened.

When the door is closed, the deformable member 646A provided on the lower surface of the upper door 31 comes into contact with the elastic member 646D provided on the upper surface of the lower door 32, and the sponge member 646C is deformed to deform the upper surface of the elastic member 646D and the upper door. It is designed to fit in a loose state between the lower surface of 31 and the lower surface. As a result, the air flow in the gap between the upper door 31 and the lower door 32 can be blocked. Further, since the sponge member 646C is in contact with the elastic member 646D in a crushed state, the gap between the upper door 31 and the lower door 32 is shielded with a large area. As a result, the gap between the upper door 31 and the lower door 32 can be more reliably sealed.

<< Embodiment 24 >>
The hot storage according to the twenty-fourth embodiment will be described with reference to FIGS. 44 and 45. The warm storage of the 24th embodiment is different from the 1st to 23rd embodiments in the sealed structure between the upper door 31 and the lower door 32. Other configurations may be the same as those of the first to the 23rd embodiments, and the description of the same configurations, actions and effects will be omitted.

As shown in FIG. 44, a ferromagnetic member 746A having a property of being attracted to a magnet (ferromagnetism) is fixed to the lower surface of the upper door 31 by an adhesive or the like over the width direction of the upper door 31. .. The ferromagnetic member 746A can be made of a ferromagnet (eg, an alloy containing iron, nickel, cobalt, and any of these elements). The cross section of the ferromagnetic member 746A along the thickness direction of the door 31 is rectangular.
An elastic member 746B that can be expanded and contracted in the vertical direction is fixed to the upper surface of the lower door 32 with an adhesive or the like over the width direction of the lower door 32. As shown in FIG. 45, the telescopic member 746B includes a bellows portion 746D having a bellows structure that can be expanded and contracted in the vertical direction, and a magnet portion 746C arranged above the bellows portion 746D. .. Although FIGS. 44 and 45 show a square tubular bellows portion 746D having a hollow structure, the shape of the bellows portion 746D is not limited to this, and may be a flat plate type or the like. The magnet portion 746C is composed of a magnetized (magnetized) ferromagnet (eg, an alloy containing iron, nickel, cobalt, and any of these elements) in the thickness direction of the door 32 of the magnet portion 746C. The cross section along is a rectangle.

As shown in FIG. 44A, the telescopic member 746B provided on the upper surface of the lower door 32 is in a state in which the bellows portion 746D is contracted by the weight of the magnet portion 746C. When the door is closed, as shown in FIG. 44 (B), the magnet portion 746C is attracted to the ferromagnetic member 746A provided on the lower surface of the upper door 31 and magnetized, and the bellows portion 746D is in an extended state. The air flow in the gap between the upper door 31 and the lower door 32 is blocked. As a result, the gap between the upper door 31 and the lower door 32 can be sealed.

<< Embodiment 25 >>
The hot storage according to the 25th embodiment will be described with reference to FIG. 46. The warm storage of the 25th embodiment is different from the 1st to 24th embodiments in the sealed structure between the upper door 31 and the lower door 32. Other configurations may be the same as those of the first to 24th embodiments, and the description of the same configurations, actions and effects will be omitted.

The closed structure of the 25th embodiment has a configuration in which the ferromagnetic member 746A and the magnet portion 746C in the closed structure of the 24th embodiment are replaced. That is, as shown in FIG. 46, a magnet member 846A made of a magnetic ferromagnetic material is arranged on the lower surface of the upper door 31 in place of the ferromagnetic member 746A. Further, on the upper surface of the lower door 32, an elastic member 846B having the same form as the elastic member 746B of the embodiment 24 is arranged, and the elastic member 846B has a bellows portion 846D and a bellows portion 846D similar to those of the embodiment 24. It is configured to include a ferromagnetic portion 846C disposed above the above. Even in such a configuration, when the door is opened, the bellows portion 846D is contracted by the weight of the ferromagnetic portion 846C, and when the door is closed, the ferromagnetic portion 846C is provided on the lower surface of the upper door 31. The bellows portion 846D is in an extended state due to being attracted to the door and magnetized, thereby blocking the flow of air in the gap between the upper door 31 and the lower door 32. As a result, the gap between the upper door 31 and the lower door 32 can be sealed.

<< Embodiment 26 >>
The hot storage according to the twenty-sixth embodiment will be described with reference to FIGS. 47 and 48. The warm storage of the 26th embodiment is different from the 1st to 25th embodiments in the sealed structure between the upper door 31 and the lower door 32. Other configurations may be the same as those of the first to the 25th embodiments, and the description of the same configurations, actions and effects will be omitted.

As shown in FIG. 48, a semicircular groove is formed at a position corresponding between the upper door 31 and the lower door 32 on the surfaces of the left side wall 12B and the right side wall 12C of the heating chamber 11 toward the inside of the refrigerator, respectively. The guide groove member 12F is provided. The groove of the guide groove member 12F connects the vicinity of the lower end of the upper door 31 and the vicinity of the upper end of the lower door 32 in a substantially arc shape. The guide groove member 12F may be embedded in the left side wall 12B and the right side wall 12C.

As shown in FIG. 47, a sealing member 946 is provided on the upper peripheral edge of the back surface 32A of the lower door 32. The sealing member 946 includes a long plate-shaped lid portion 946A, a long plate-shaped fixing portion 946C, and a hinge 946B for rotatably connecting the lid portion 946A and the fixing portion 946C. It is configured to include a guide portion 946D projecting from both ends of the lid portion 946A in the longitudinal direction. The lengthwise dimension of the lid portion 946A is the same as or slightly smaller than the widthwise dimension of the opening of the heating chamber 11. The fixing portion 946C is attached to the back surface 32A substantially horizontally so that the longitudinal direction is along the width direction of the lower door 32 and the front plate surface faces the back surface 32A. The lid portion 946A is fixed to the fixing portion 946C via the hinge 946B so that the plate surfaces can be flush with each other along the upper end portion of the fixing portion 946C. The hinge 946B rotates about the rotation axis along the longitudinal direction (width direction) so that the lid portion 946A can form an angle of 180 degrees with respect to the fixed portion 946C (so that they are flush with each other). The rotation of the lid portion 946A is restricted so that the lid portion 946A does not rotate backward by 90 degrees or more with respect to the fixed portion 946C. The guide portion 946D of this example is composed of two columnar pieces, and is both ends in the longitudinal direction (width direction) of the lid portion 946A, and the lid portions are directed to both sides in the longitudinal direction on the side opposite to the rotation axis. A part of it is arranged so as to protrude from 946A.

In the sealing member 946, when the lower door 32 is opened, the lid portion 946A is arranged in a posture of tilting backward at a position of 90 degrees with respect to the fixing portion 946C by its own weight. When the lower door 32 is closed, first, the guide portions 946D attached to both ends of the lid portion 946A at a 90-degree position invade the grooves of the guide groove member 12F of the heating chamber 11. As the lower door 32 closes, the guide portion 946D is guided upward along the groove to increase the angle of the lid portion 946A with respect to the fixing portion 946C. Then, in a state where the lower door 32 is completely closed, the guide portion 946D is arranged at the upper end of the guide groove, and the lid portion 946A is raised substantially vertically so as to be in contact with the back surface 31A of the upper door 31. Stand up. When the lower door 32 has such a configuration, when the upper door 31 and the lower door 32 are closed, the air flow in the gap between the upper door 31 and the lower door 32 is blocked by the lid portion 946A in an upright posture. The door. As a result, the gap between the upper door 31 and the lower door 32 can be sealed.

<< Embodiment 27 >>
The warm storage according to the 27th embodiment will be described with reference to FIG. 49. The hot storage of the 27th embodiment is different from the 26th embodiment in that the sealing member 1046 is provided on the upper door 31 and the configuration thereof is slightly modified. Other configurations may be the same as those of the first to 26th embodiments, and the description of the same configurations, actions and effects will be omitted.

A sealing member 1046 is provided on the upper peripheral edge of the back surface 31A of the upper door 31. The sealing member 1046 includes a lid portion 1046A, a fixing portion 1046C, a hinge 1046B, a guide portion 1046D, and a regulation member 1046E. The configuration of the lid portion 1046A, the fixing portion 10946C, and the guide portion 1046D is the same as that of the 26th embodiment. The hinge 1046B of this example does not have a function of regulating the rotation angle of the lid portion 1046A with respect to the fixing portion 1046C, and instead, the regulating member 1046E regulates the rotation range of the lid portion 1046A. ing. The regulating member 1046E of this example is composed of a tension spring. That is, the fixing portion 1046C is attached to the lower peripheral edge of the back surface 31A of the upper door 31, and the lid portion 1046A can have a plate surface flush with each other along the lower end portion of the fixing portion 1046C. As described above, it is fixed to the fixing portion 1046C via the hinge 1046B. The restricting member 1046E is connected to the back surface of the fixing portion 1046C and the back surface of the lid portion 1046A so that the angle formed by the back surface of the fixing portion 1046C and the back surface of the lid portion 1046A is 90 degrees in the free state of the tension spring. It is designed.

In the sealing member 1046, when the upper door 31 is opened, the lid portion 1046A is arranged by the regulating member 1046E in a posture of being lifted to a position of 90 degrees rearward with respect to the fixing portion 946C. When the upper door 31 is closed, first, the guide portions 1046D attached to both ends of the lid portion 1046A at the position of 90 degrees enter the grooves of the guide groove member 12F of the heating chamber 11. As the upper door 31 closes, the guide portion 1046D is guided upward along the groove and expands the angle of the lid portion 1046A with respect to the fixing portion 1046C against the elasticity of the tension spring. Then, in a state where the upper door 31 is completely closed, the guide portion 1046D is arranged at the lower end of the guide groove, and the lid portion 1046A is pulled down substantially vertically to hang down in a posture of contacting the back surface 32A of the lower door 32. Let me. By providing the upper door 31 with such a configuration, when the upper door 31 and the lower door 32 are closed, the air flow in the gap between the upper door 31 and the lower door 32 is blocked by the lid portion 1046A in the hanging posture. The door. As a result, the gap between the upper door 31 and the lower door 32 can be sealed.

<< Embodiment 28 >>
The hot storage according to the twenty-eighth embodiment will be described with reference to FIGS. 50 and 51. The warm storage of the 28th embodiment is different from the 1st to 27th embodiments in the sealed structure between the upper door 31 and the lower door 32. Other configurations may be the same as those of the first to 27th embodiments, and the description of the same configurations, actions and effects will be omitted.

FIG. 50B is a view of the upper door 31 and the lower door 32 when the door is closed, as viewed from the rear side. It is also shown by a virtual line.
The back surfaces 31A and 32A of the upper door 31 and the lower door 32 are provided with the same packing 34 as in the first embodiment. However, the upper door 31 and the lower door 32 are not provided with the packing support member 36, and the lower packing 35D of the upper door 31 and the upper packing 35E of the lower door 32 are different packings 35A (not shown). ), 35B, 35C, 35F, 35G, 35H (not shown), the doors 31 and 32 are arranged along the back surfaces 31A and 32A. A long upper magnet M1 is provided above the lower packing 35D along the lower packing 35D, and a long lower magnet M2 is provided along the upper packing 35E below the upper packing 35E. There is.

On the back surfaces 31A and 32A of the upper door 31 and the lower door 32, a sealing plate P is arranged so as to be able to pass between the upper door 31 and the lower door 32. The sealing plate P has a long, substantially rectangular plate shape made of a ferromagnetic material, is arranged so that the longitudinal direction is along the width direction of the doors 31 and 32, and is attached to and detached from the upper magnet M1 and the lower magnet M2. It can be magnetized freely. The dimension in the longitudinal direction of the sealing plate P is larger than the dimension in the width direction of the opening of the heating chamber 11, for example, at the distance between the centers of the left and right packings 35B, 35C, 35F, 35G of the upper and lower doors 31 and 32. The dimensions are equal to each other, and the dimensions in the lateral direction (vertical direction) are such that the upper magnet M1 and the lower magnet M2 can be covered in the vertical direction from the rear. When the door is closed, such a sealing plate P crushes the packings 35B, 35C, 35D of the upper door 31 and the packings 35E, 35F, 35G of the lower door 32 while crushing the upper door. By magnetizing the back surfaces 31A and 32A of the 31 and the lower door 32, the gap between the upper door 31 and the lower door 32 can be closed.

FIG. 51 shows the state of the sealing plate P as the upper door 31 and the lower door 32 are opened and closed. That is, (A) when the door is closed, the sealing plate P is magnetically attached to the upper door 31 and the lower door 32 by the upper magnet M1 and the lower magnet M2. Here, when (B) the upper door 31 is opened, the sealing plate P is sandwiched between the lower door 32 and the heating chamber 11, and is therefore detached from the upper door 31. In this state, if the lower door 32 is to be opened wider than the upper door 31, the sealing plate P first moves together with the lower door 32 in a state of being magnetically attached to the lower door 32, and (C) the lower door 32. And the upper door 31 are magnetically attached to both the lower door 32 and the upper door 31 when the door opening degree is the same. Then, (E) when the lower door 32 has a larger opening degree than the upper door 31, the sealing plate P is magnetically attached to the upper door 31 and stays at the position of the upper door 31. Detachable from 32, only the lower door 32 moves. Similarly, when (A) the lower door 32 is opened from the closed state, the sealing plate P is sandwiched between the upper door 31 and the heating chamber 11, and is therefore detached from the lower door 32. .. In this state, if the upper door 31 is to be opened wider than the lower door 32, the sealing plate P first moves together with the upper door 31 in a state of being magnetically attached to the upper door 31, and (C) the upper door 31. And the lower door 32 are magnetically attached to both the upper door 31 and the lower door 32 when the door opening degree is the same. Then, (F) when the upper door 31 has a larger opening degree than the lower door 32, the sealing plate P is magnetically attached to the lower door 32 and stays at the position of the lower door 32. Detachable from 31 and only the upper door 31 moves. In this way, the sealing plate P is arranged on the doors 31 and 32 in a state of being magnetized to at least one of the upper door 31 and the lower door 32, and closes the gap between the upper door 31 and the lower door 32 when the door is closed. Designed for.

<Other embodiments>
The techniques disclosed herein are not limited to those disclosed in the above embodiments, and for example, the following aspects are also included in the technical scope disclosed herein. In addition, the techniques disclosed herein can be implemented in various modified embodiments without departing from their essence.
(1) In the above embodiment, the packing 34 made of silicone rubber has been exemplified, but the material constituting the packing 34 is not limited to this. For example, it may be made of a material having low friction and good slidability such as fluororubber or nitrile / silicone rubber.
(2) In the above embodiment, a display device, a warning light, an alarm device, and the like are mentioned as the notification means, but various known notification means can be adopted. As an example of such a notification means, there is a notification mode using e-mail, a smartphone application, a telephone call, an fragrance device, or the like.
(3) The operation contents (heating operation, heat insulation operation, etc.) of the heat storage by the control device in the above embodiment are merely examples, and various other operation methods can be adopted.

1 ... Warm storage, 10 ... Warm storage body, 11 ... Warm room, 12B ... Left wall, 12C ... Right wall, 12D, 112D ... Back wall, 30 ... Door, 31, 131 ... Upper door, 31A, 32A Back, 32, 132 ... Lower door, 34, 146 ... Packing, 34A ... Cylinder, 34D ... Leg, 35D, 135D ... Lower packing, 35E, 135E ... Upper packing, 36, 136 ... Packing support member, 40 ... Heating unit, 41, 141 ... Inner duct, 41A ... Main body, 41B ... Side, 41C ... Vent, 42 ... Inner heater, 43 ... Outer duct, 43A ... Main body, 43B ... Side, 43C ... Vent, 44 ... outer heater, 46 ... fan, 46A ... first fan, 46B ... second fan, 50 ... wind direction plate, 100, 200, 300, 400, 500 ... control device

Claims (9)

The main body of the heat storage for accommodating the object to be warmed,
A heating unit for heating the inside air of the main body of the heat storage, and
Equipped with
The heating unit is
Inside the warm storage body, an inner duct arranged along the vertical direction with respect to the side wall of the warm storage body,
Inside the main body of the heat storage, an outer duct arranged along the vertical direction so as to surround the inner duct, and
The first heating means provided in the inner duct and
The second heating means provided in the outer duct and
A ventilation mechanism that sends the inside air of the warm storage body from above to below to the inner duct and the outer duct.
Equipped with
The outer duct is a warm storage having a ventilation hole for communicating the inside of the outer duct with the inside of the warm storage main body. The main body of the heat storage is
A rectangular parallelepiped-shaped heat storage room that opens forward,
A door that opens and closes the opening of the storage room,
Equipped with
The outer duct is
It is installed on the back wall, which is the side wall on the opposite side of the opening, and
A main body portion separated from the back wall, and side surface portions extending from both ends of the main body portion toward the back wall.
Is configured with
The warm storage according to claim 1, wherein a plurality of the ventilation holes are provided in the main body portion and the side surface portion in the vertical direction. The first heating means and the second heating means are cord heaters, respectively.
The inner duct and the outer duct have a main body portion separated from the side wall, and side surface portions extending from both ends in the width direction of the main body portion toward the side wall, respectively.
Is configured with
The cord heater is arranged on the surface of the main body on the side facing the side wall, and is also arranged.
The warm storage according to claim 1 or 2, wherein the ventilation mechanism includes a cross-flow type fan that allows air to flow in a direction crossing the rotation axis of the drum-type rotary blade. The warm storage according to any one of claims 1 to 3, wherein the inner duct and the outer duct are each made of aluminum or an aluminum alloy. The warm storage according to any one of claims 1 to 4, wherein a wind direction plate extending toward the outer duct is provided on the surface of the inner duct on the side facing the outer duct. The temperature detecting means for detecting the temperature of the inside air and
A control device that controls the operation of the heating unit,
Equipped with
The control device is
The first heating means and the second heating means are continuously used until the temperature of the inside air detected by the temperature detecting means reaches a first temperature lower than a preset heating temperature. Activate,
After the temperature of the inside air detected by the temperature detecting means reaches the first temperature, the first heating means and the second heating means are used so that the inside air is heated stepwise by a predetermined temperature range. The hot storage according to any one of claims 1 to 5, further comprising a configuration in which the heating means of the above is intermittently operated. A temperature detecting means for detecting the temperature of the inside air, a time measuring means, a notification means, a control device, and the like.
Equipped with
The control device is
By the time measuring means, the elapsed time from the start of heating of the inside air by at least one of the first heating means and the second heating means is measured, and the elapsed time is measured.
The temperature of the inside air is detected by the temperature detecting means,
If the detected temperature of the inside air does not reach the predetermined set temperature when the elapsed time reaches the predetermined set time, the activated first heating means and the second heating means are activated. Judging that at least one of them is out of order
The warm storage according to any one of claims 1 to 6, further comprising a configuration for notifying a failure by the notification means. It is equipped with a timekeeping means, a notification means, and a control device.
The control device has a configuration in which when the elapsed time measured by the timekeeping means reaches a preset first time, the notification means notifies the arrival of the first time. The warm storage according to any one of 6 to 6. The warm storage according to claim 7 or 8, wherein the notification means is at least one selected from the group consisting of a display device, a warning light, and an alarm device.

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