RU2793037C1 - Mobile heater - Google Patents

Abstract

FIELD: electric heating.

SUBSTANCE: invention relates to systems of the so-called "warm floor", and can be used to create mobile heating devices for heating and drying. The mobile heater includes a heating panel and an electrical cable connected to it for connection to the power supply network, made in the form of a solid plate with the following items attached to it with the help of an electrical insulating compound: a solid sealed hollow frame, a heating cable, a metal mesh, thermostats and (or) temperature sensors. In this case, the reflective thermal insulation and the bottom panel are made removable, and the electrical wiring is placed in the frame cavity.

EFFECT: increase in the efficiency, safety and reliability of the heater.

5 cl, 2 dwg

Description

The field of technology.

The invention relates to resistive electric heating, namely to systems of the so-called "warm floor" and can be used to create mobile heating devices for heating and drying.

When used horizontally (on the floor), for example, for drying shoes or warming feet, the mobile heater is a durable heating panel with a wear-resistant surface, equipped with a cable for connecting to a power supply. The surface of the heater is formed by a solid plate, on which, from the inside, with the help of a heat-resistant electrical insulating compound, the following are fixed: a metal mesh, a heating cable, thermostats and (or) temperature sensors. The plate is fixed on a hollow, sealed, durable frame. Elastic supports are installed at the bottom of the frame. The metal mesh, which has an electrically conductive contact with the ground wire, provides protection for the user from electromagnetic radiation and, acting as a reinforcement, partially protects the heating cable from damage in case of mechanical destruction of the plate. To minimize heat loss and increase the efficiency of the heater, a reflective thermal insulation is installed under the heating cable, which is held in place by a removable bottom panel. Cables and wires are placed in the frame cavity, and access to the wire connection points is provided through holes for installing elastic supports. Through the hole in the end of the frame for the output of the power cable, it is possible to implement a scheme for parallel connection of several heaters with the control of one thermostat with a minimum number of cables from the outside. The thermostat, switch, can be installed in the break of the supply cable or built into the heater frame. 4 w.p. f-ly, 2 ill.

State of the art

Closest to the claimed invention in its technical essence is a flat mobile air heater (cable electric floor heating) (RU 132164, IPC F 24D 13/02, publ. 2013.09.10). The flat mobile heater includes a flexible heating panel and an electric cable connected to it for connection to the power supply network.

The disadvantages of this technical solution are:

- flexibility of the heating panel, which leads to low mechanical strength "for puncture" and "for bending". Limits application on uneven ground (gravel, earth, etc.)

- low maximum temperature of 30°C. Drying on the heater stretches over time, and the effect of warming up the body is mild.

- the absence of a sealed power outlet for the implementation of a scheme for parallel connection of several heaters with the control of one thermostat with a minimum number of cables from the outside. If it is necessary to use several heaters in a limited area, a large number of power cables from the outside can create inconvenience for the user.

- lack of a thermostat and, as a result, the possibility of overheating.

Disclosure of the essence of the invention.

The objective of the invention is to eliminate these disadvantages. The technical result consists in increasing the efficiency, safety and reliability of the heater by changing the strength, heat-resistant and structural characteristics. The problem is solved, and the technical result is achieved by the fact that the mobile heater is made in the form of a sealed hollow solid frame and a solid plate, a metal mesh, a heating cable, thermostats and (or) temperature sensors, reflective thermal insulation, a bottom panel, and electrical wiring with thermostat. The essence of the proposed technical solution is illustrated by the following graphic material:

Brief description of the drawings.

in fig. 1 general view of the heater.

in fig. 2 heater detail. (view from below).

Where:

1 - plug-support

2 - bottom panel

3 - reflective thermal insulation

4 - heating cable

5 - frame

6 - metal mesh

7 - plate

8 - switch

9 - wiring

10 - power cable

11 - thermostat

12 - thermostats and (or) temperature sensors

13 - plug

14 - carrying handle

15 - holes for pulling electrical wiring

16 - holes for plugs-supports 1

Implementation of the invention.

The mobile heater includes a solid sealed hollow frame 5 with holes 16 for elastic plugs-supports 1 and holes 15 for pulling electrical wiring 9, 10 and mounting a switch 8. A solid plate 7, a shielding mesh 6, a heating cable 4 and thermostats and (or) temperature sensors 12. The bottom panel 2 fixes the reflective thermal insulation 3 in the housing. The carrying handle 14 is fixed on the frame body 5. The plug 13 is installed in the hole 15. It is advisable to install a thermostat 11 between the heater and the mains.

Hollow frame 6 is a solid frame and forms a sealed cavity for electrical wiring 9, 10. Solid plate 7, heating cable 4, screening-reinforcing mesh 6, thermostats and (or) temperature sensors 12 are fixed to the frame using a heat-resistant electrical insulating compound. The shielding-reinforcing metal mesh 6 has an electrically conductive contact with the ground wire, provides protection for the user from electromagnetic radiation and, acting as a reinforcement, partially protects the heating cable from damage in case of mechanical destruction of the front panel. Reflective thermal insulation 3 is designed to minimize heat loss. The bottom panel 2 serves to hold the reflective thermal insulation and is fixed in the frame with the possibility of dismantling. The carrying handle 14 is for ease of movement and is optional. Holes 16 in the frame provide access to the wire connections and are hermetically sealed with elastic plugs 1. The second purpose of the elastic plugs 1 is anti-slip supports. Hole 15 for the output of the supply wire is designed to implement a scheme for parallel connection of several heaters with the control of one thermostat. Temperature controller 11, switch 8, can be installed in the break of the supply cable or built into the heater body. All components of the heater are selected taking into account the strength, tightness, heat resistance, electrical safety, corrosion resistance and safety of the heater as a whole.

In a specific implementation example, the frame is made of steel shaped pipes connected by a sealed weld and painted with a heat-resistant paint to protect against corrosion. Ceramic floor tiles were used as the front plate. The binder for the front panel, frame, heating cable, metal mesh, thermostats is a silicone electrical insulating compound. A heating cable made of carbon fiber is used as a heating element. Between the turns of the heating cable there are two thermostats that break the power circuit at 65°C. The shielding metal mesh has an electrically conductive contact with the metal frame and the earth cable. The foil layer on mineral wool is laid in a frame and fixed with a lower metal panel with the possibility of dismantling. The electrical wiring is connected using WAGO terminal blocks, which makes it possible to maintain the wire connection points and change the connection schemes during operation. The cable for parallel connection of a similar heater is laid in the frame cavity and can be led out through hole 15. The tightness of the leads is ensured by the use of rubber sealing rings and plugs. The temperature regulator is a 220 V AC voltage regulator-switch installed in the power wire break outside the heater body. A waterproof switch with a backlight is installed in the heater body and, in addition to the main function on, off, signals the active mode of the heater and helps in identifying the location of the heater in low light conditions. The heater is connected to a 220V network with grounding.

Thus, the proposed invention makes it possible to provide moisture protection according to the IP67 standard, and the class of protection against electric shock I.

Claims (5)

1. A mobile heater that includes a heating panel and an electrical cable connected to it for connecting to the power supply network, characterized in that it is made in the form of a solid plate with fixed on it with an electrical insulating compound: a strong sealed hollow frame, a heating cable, a metal mesh, thermostats and (or) temperature sensors, while the reflective thermal insulation and the bottom panel are mounted removable, and the electrical wiring is placed in the frame cavity. 2. The heater according to claim 1, characterized in that the metal mesh has an electrically conductive contact with the ground cable. 3. The heater according to claim 1, characterized in that the openings in the frame that provide access to the wire connections are hermetically sealed with elastic plugs. 4. The heater according to claim 1, characterized in that the elastic plugs in the horizontal application of the heater are anti-slip supports. 5. The heater according to claim 1, characterized in that a parallel connection of several heaters is implemented with the control of one thermostat with a minimum number of cables from the outside.

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