JPS62190376A - Heating apparatus for box for cold and hot storage - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a heating device that enables a refrigerating insulation box, which is mainly used for loading/vehicles into automobiles, to also be used as a hot storage. Sekibaru.

[Conventional technology uj] The so-called cool box, which uses foamed plastic as an insulating material and has excellent heat retention, is a reusable cooling box packed with a heat storage material with a large heat capacity and a V (
It is widely used for various purposes.

Also, as seen in JP-A-F'58-53539J,
There is also known a heating box in which an electric hot air generator is built into a portable box with good heat insulation similar to the above.

[Problems to be Solved by the Invention] The present invention provides a portable insulating box that can be easily removed during the summer when a heating function is not required, and can be easily and quickly installed in the box when it is needed. The purpose is to provide a heating device for

[Means for Solving the Problems] In order to achieve the above object, a heater for a cold/hot storage box according to the present invention is provided.
An electric resistance heater for warming the inside of a cold/warm storage box as a heat insulating container, a fixing means for the heater, and a connector for connecting to a power source on one end (the old power supply A configuration is adopted in which the cord and the cord connecting means for connecting it to the heater mentioned above can be viewed from above while the other end of the power supply cord is inserted into the drain hole.

[Operation and Effects of the Invention] If you want to use an insulated container used as a cold storage in the summer as a non-heated storage in the winter, fix the heater inside the insulated container using a fixing means, and also provide a drainage hole. By using the connection means to connect the power supply cord to the electric resistance heater to a power source installed outside the heat insulating container in a one-touch manner, a temperature R function is provided.

When you want to use the refrigerator again next spring or summer, you can simply and quickly remove the unnecessary heating device that has become a nuisance by performing the reverse procedure to the above.

[Example] A specific configuration of the present invention will be described below based on an example shown in the accompanying drawings.

1 to 3 all show the first embodiment, and the heating device A according to the present invention is a heating device for cold and hot storage, which has the same structure as those commercially available as “cool boxes” etc. It is freely attached to the bottom of the box B.

The cold and hot storage box B has a two-wheeled wall structure, and has a main body part that is similar to the main body 1 and has a main body part in which the space between the walls of the box body 1 with an open top is filled with a heat insulating material 3 such as synthetic resin foam. Double wall insulation MA
It has a structure in which a lid body 2 with a structure is connected through a hinge part, and a drain hole 4 is provided at the bottom for draining water generated by condensation and cleaning water. . 4
A is a threaded groove into which the drain hole plug is screwed, and 5 is a flange of the box B.

The heating device includes a positive temperature coefficient thermistor 11 with a honeycomb structure as an electric resistance heating element, and an electric fan 12 for blowing air from the cooling/warming box B onto the 4J-mister 11. It is constructed by being housed within a heater case 13 as a frame member. Heater case 13
is a box-like body made of Al heat and flame-resistant synthetic 4Bi resin or metal and divided into upper and lower halves, and includes an air inlet 13a and an air outlet 131) and a flange for fitting the motor 12A of the electric fan 12. A fan mounting hole 13c with a shaped edge is provided.

A plug body 14 made of synthetic resin as a means for fixing the heater is fixed to the lower surface of the heater case 13 by either integrally molding it with the case 13 or by making it separately and assembling it. The outer periphery of the stopper 14 is provided with a threaded groove for screwing into the drain hole 4 of the cooling/heating box B.

A pair of conductive parts 015a and 15b made of spring pieces are embedded inside the plug body 14 to be brought into pressure contact with the pair of power receiving terminals 11a of the positive temperature coefficient thermistor 11, respectively, and the upper end side thereof is embedded in the plug body 14. It is exposed on the upper surface of the body 14 and squeezes the pair of power receiving terminals 11a of the thermistor 11, and the lower end side is inside the plug body 14 and is shaped to form a contact point of an electric outlet. And morph 12 of electric fan 7・n12
Δ is connected to the conductive portions 15a and 151) by wiring after being in parallel with the υ-mister 11.

17 is a power supply cord for the →nomister 11 and the electric fan 12, with a lightning source plug 18 on the E side and a cliff part of the cord connection means on the other end.
9 is attached (hanged). This intermediate plug 19 is connected to the stopper body 1.
4, and the other half of the cord connection means is inserted into said electrical outlet 1.

Next, an explanation will be given of the method of assembling and electric power, taking as an example the case where the above-mentioned embodiment device is assembled into an existing so-called cool box for use in a car and converted into a warming box.

In order to transform an existing cool box into a cold/hot storage box B by installing the heating device A according to the present invention, first remove the sealing plug of the water drain hole 4 of the box.
Yuzuzu. After that, by screwing the plug 14 fixed to the lower surface of the heater case 13 into the drain hole 4,
The removal of heater case 13 to box B is completed in one step. Then, connect the intermediate plug 19 of the power supply cord 17 to the electrical outlet 1 built into the plug body 14, and connect the power plug 18 to the power outlet 1 installed in the driver's seat panel of the automobile. By inserting it, electricity can be applied to the heater A, and the cold/warm storage box B enters the state of being used as a hot storage.

The n-temperature coefficient thermistor 11, which serves as an electrical resistance heating element, is gradually heated during energization (3) based on the electrical resistance characteristics, which vary depending on the type of thermistor.
Because each 9-mister has the property of rapidly increasing its electrical resistance when heated to the Curi point temperature,
So to speak, a self-constant temperature maintenance function occurred, and from then on Hariichi Mister 1
The surface temperature of the cucumber 1 is maintained at around the temperature at one point of the cucumber.

Therefore, for example, the inside of box B for 4a should be heated to 55 to 60°C.
If you want to keep the temperature close to 4, if you rely on a 12V car battery as the power source, the temperature at one cucumber point will be approximately 65℃.
If a positive energy coefficient 4 no mister 11 of the order of magnitude is selected and used as a heating element, the intended purpose will be achieved.

The electric fan 12 connected to the power supply in parallel with the thermistor 11 sucks air in the heating box B C113a.
It is sucked into the heater case 13 and sprayed toward the thermistor 11. Since the heated air is pushed out of the case 13 from the outlet 13b, the heating box B
Inside the box B, a circulating air flow is formed which passes through the heating device Δ, as indicated by the arrow in FIG.

When the season changes to a time when heating is not required, the heating device △ that comes into existence with GJ can be used to effectively utilize the space inside the refrigerator. can be removed.

In the case of the device of this embodiment, if the car is equipped with a special outlet other than a cigarette lighter, the power plug 18 may of course be inserted into the outlet 1.

4 and 5 show a second embodiment. The difference from the first embodiment lies in the method of connecting the power supply cord to the heater Δ through the water drain hole of the cold storage box B, and the intermediate plug 19 of the previous example is omitted.

The upper ends of a pair of conductive members 22a and 22b embedded in a plug 21 fixed in the heater case 13 form connection terminals to the thermistor 11, and the power supply cord 23 is soldered to the lower end. Something is being done to me. Adopt this connection method? To do this, connect the power plug of the power supply cord to
It is necessary to make the outer diameter of the drain hole 4 smaller than the inner diameter of the drain hole 4.

In this case, when carrying the box, the power supply cord is connected to 1. A means for wrapping the cord is attached to prevent it from becoming damaged.
It is good.

FIG. 6 is a partial vertical cross-sectional view of a device showing a third embodiment, in which a panel-like or sheet-like heating element 30 is used as an electric resistance heater, and is equipped with a heating element structure similar to an electric blanket and a constant temperature maintenance mechanism. are using.

The panel-shaped heating element 30 has a planar area somewhat smaller than the internal bottom area of the box 1, and its outer surface is covered with a waterproof material, such as a heat-resistant synthetic resin layer. The panel-shaped heating element 30 is freely attached to the inner bottom surface of the box body by means of a vacuum suction cup 32 placed on the W surface thereof. Alternatively, instead of the suction cup, the heating element 30 may be fixed by the force acting on the elastic spring 38 fitted to the outer peripheral edge of the panel-shaped heating element 30. .

33 is a power supply cord pulled out from the heating element 30;
A plug 34 for connection to a thunderbolt, which is large enough to be inserted into the drain hole 4 of the box body 1, is connected to its end.

Instead of a panel-shaped heating element as a rigid body, a lifting platform that uses a sheet-shaped heating element made of a highly flexible material as a heater uses commercially available Velcro tape (
(product name) may be used.

When such a heating element whose heating area is as wide as the inner bottom area of the box 1 is used, a fan for diffusing the generated heat is almost unnecessary.

Warm air becomes lighter and rises, so there is no need to intentionally connect the drain holes 4 to 4.

Instead of the positive temperature coefficient 4 nomister or panel-shaped heating element as the heating element used in the above embodiment, the heat storage f with a large heat capacity, which has been used in the past by being incorporated into electric anchors etc.
1 item cost and its heating? A heat accumulating heating element consisting of a combination of 7i thermal heaters may also be used.

In this case, after sufficient thermal energy has been stored in the heat storage material, the heating box that has been disconnected from the power source can be moved freely and used for quite a long time. It is particularly suitable for mounting mica.

In the above embodiment, the device of the present invention is used to utilize an existing so-called "cool box" during the winter.As explained in J.U. In that case, the means for connecting the power supply cord to the heater can be more easily operated and the appearance can be finished smartly.

[Brief explanation of drawings]

1 to 3 are views of a first embodiment, in which FIG. 1 is a vertical cross-sectional view of a cold/hot storage box incorporating the device of the present invention, and FIG.
The figure is a partial sectional view illustrating a method of connecting the power supply cord to the heater through the drain hole of the box, and FIG. 3 is an exploded perspective view of the heater. Figures 4 and 5 are diagrams of the second embodiment, in which Figure 4 is a partial sectional view of the cold/warm storage box showing the connection status of the power supply cord to the heater, and Figure 5 is the diagram of the second embodiment. 4 is a partially enlarged view of FIG. 4. FIG. 6 is a partial cross-sectional view of a cold/warm storage box as a third embodiment, showing the installation of a heater different from the above-mentioned embodiment.

Claims (1)

[Scope of Claims] 1) An electric resistance heater for warming the inside of a cold/hot storage box serving as a heat insulating container with a lid having a water drain hole, means for fixing the heater, and a power source on one end side. and a cord connecting means for connecting the other end of the power cord to the heater while the other end of the power cord is inserted through the drain hole. A heating device for cold and hot storage boxes. 2) The heater consists of a positive temperature coefficient thermistor, a fan for blowing air in the box onto the thermistor, and a frame member for assembling both of them, and the fixing means is fixed to the frame member. and a plug that can be screwed or fitted into the drain hole, and the cord connecting means is a power distribution connector attached to the plug and the other end of the power supply cord, respectively. A heating device for a cooling/warming box according to claim 1. 3) The heating device for cold and hot storage according to claim 1, wherein the heater is a panel-like or sheet-like electric heater with a thermostat having a surface area approximately equal to the bottom area of the box. Box heating device. 4) The heating device for a cold/hot storage box according to claim 1 or 3, wherein the fixing means for the heater is a vacuum suction cup. 5) The cold/hot storage box according to claim 1 or 4, wherein the heater includes a heat storage material having a large heat capacity and an electric heater for heating the material housed in a casing. heating device.