JPH0242266Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention has the property of storing or releasing heat while maintaining a constant temperature when a substance transforms from solid to liquid or vice versa. For example, in the nap bed of a truck,
This heat storage mat stores heat by utilizing power generated while the truck is running, and radiates heat while the truck is stopped and taking a nap, thereby keeping the inside of the bed at a comfortable temperature.

[Conventional technology]

Regarding pine that uses a latent heat storage agent that stores or radiates heat at the transformation temperature to maintain a constant temperature without being affected by the surrounding temperature, a separate application for utility model registration was filed in 1988. 195773
The application has been filed as No.

This mat is made by sandwiching a bag containing a heat storage agent and an electric heater unit polymerized into the bag in an insulating cushion material, and enclosing the bag in a bag cover.When the mat is not in use, the electric heater is energized. The heat is stored in the heat storage agent as latent heat, and even if the electricity is cut off, the inside of the mat is maintained at a predetermined temperature for a certain period of time by discharging the heat storage agent.

For example, the driver of a truck, etc.
When stopping the engine and taking a nap in cold weather, there is no need to use the battery as a heat source, so there is no risk of over-discharge of the battery, which is convenient.

[The problem that the idea aims to solve]

However, for the human body, it is more comfortable to sleep when the temperature is closer to the feet, but since the above-mentioned mat has a uniform temperature distribution, it cannot be said that the bed is sufficiently comfortable.

[Means to solve the problem]

The present invention involves polymerizing electric heater units in a plurality of bags filled with heat storage agents with different transformation temperatures to form a plurality of heating elements with different heat generation temperatures, and then creating a cushion in which these heating elements are sandwiched. When forming the mat by enclosing it in the cover, the above-mentioned problem is solved by appropriately arranging each heating element within the mat depending on the purpose of use of the mat.

[Effect]

In the pine of the present invention, heating elements having a plurality of heat storage agents having different transformation temperatures are appropriately arranged, so the temperature distribution of the pine when the heat storage agent releases heat can be set as desired. Can be done.

〔Example〕

The drawing shows an embodiment in which the present invention is applied to a mat for a nap bed in a truck.
Each compartment bag 1a contains an upper layer cushion 3 made of polyurethane foam, a middle layer cushion 4 made of polyurethane chips, and a lower layer cushion 5 made of polyurethane foam.

Three compartment bags 1a on the right side of Matsutto in Figure 1
A first heating element 6, a second heating element 7, and a third heating element 8 are sandwiched in order between the upper cushion 3 and the middle cushion 4 from the left in FIG. 1.

Each heating element 6, 7, 8 has a sodium acetate-based heat storage agent 10 having a large latent heat of transformation and an impregnated base material 11 such as polyester felt enclosed in a flat bag body 9 made of laminated aluminum foil. A meandering string-like cord heater 12, which is a heating wire covered with a heat-resistant insulating material such as silicone rubber, is covered with an aluminum foil 13 coated with an adhesive and adhered to the bottom surface of the bag body 9. It is formed by

The transformation temperature of the heat storage agent 10 of each heating element 6, 7, 8 is 50°C for the first heating element 6, 55°C for the second heating element 7,
The temperature of the third heating element 8 is 58°C.

A temperature switch 14 is provided at the important point of the cord heater 12 of each heating element 6, 7, 8, and both ends of each cord heater 12 are connected to a power source such as a cigarette lighter by a power cord 15, a connector 16, and a plug 17. It is now possible to connect to

In the above-mentioned mat, when each cord heater 12 is energized, the generated heat is stored as latent heat while each heat storage agent 10 liquefies, and the power is cut off by opening the temperature switch 14 or pulling out the plug 17 from the power supply. Also, while the heat storage agent 10 is solidifying, the stored latent heat is released to maintain each part of the mat at a predetermined temperature.

Note that as the heat storage agent 10, polyethylene glycol or the like can also be effectively used instead of sodium acetate.

The present invention does not limit the number of partition bags to four. Further, it may be divided along each partition line 2.

[Effect of idea]

In the mat of the present invention, the transformation temperature of the heat storage agent in the plurality of heating elements to be stored differs, so by appropriately arranging these heating elements in the pine, the temperature distribution of the pine when the heat storage agent releases heat can be controlled. It can be adjusted as desired and is very effective when used, for example, as a nap bed in a truck.

In addition, since changes in temperature distribution are not dependent on the density of the heater used in conventional electric blankets, stable constant temperature characteristics can be obtained regardless of the heat retention of the surrounding area, which is good for health. preferable.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is an enlarged longitudinal sectional side view of the main part of FIG. 1...Cover, 1a...Divider bag, 2...Partition line, 3, 4, 5...Cushion, 6...First heating element, 7...Second heating element, 8...Third heating element, 9...
... Bag body, 10 ... Heat storage agent, 11 ... Impregnated base material, 1
2... Cord heater, 13... Aluminum foil, 14... Temperature switch, 15... Power cord, 16... Connector, 17... Plug.

Claims (1)

[Scope of utility model registration request] A plurality of heating elements are formed by polymerizing electric heater units in each of a plurality of flat bags filled with latent heat storage agents having different transformation temperatures, and each heating element is sandwiched within an insulating cushion material. A heat storage mat enclosed within a bag-like cover.