RU169541U1 - HOUSEHOLD ELECTRIC HEATER - Google Patents

Abstract

The utility model relates to electric heating devices and is intended for heating residential and domestic premises when using electricity from renewable sources. The technical result of the utility model is to reduce the heating time when the appliance is turned on and after the power supply voltage drops, which is achieved due to the fact that the household electric heater contains stone panel and heating element, characterized in that the stone panel is made of porcelain, on one side of which The metal case is formed by the rear, upper, lower and side walls, on the inside on the back wall of the case there is a heating element, which is made in the form of a metal cable in silicone heat-resistant insulation, on the outside there is a temperature control unit that is connected to a bimetallic temperature regulator and a thermostat, which are connected in series through the heating element and to which the power cable is connected.

Description

The utility model relates to electric heating devices and is intended for heating residential and domestic premises when using electricity from renewable sources [F24H 3/04, Н05В 3/12].

In the winter season, with the massive use of electric heaters, short-term up to 10 minutes are possible. the voltage drop of the supply network, while the heating elements cool in proportion to the voltage drop, and thereby reduces the total thermal radiation of electric heaters, which leads to a significant decrease in air temperature in the heated room. Also, this effect is observed when wind generators are used as a source of electrical energy, the output voltage of which is proportional to the wind speed, while a drop in wind speed leads to a decrease in the supply voltage and a decrease in temperature in a heated room.

The prior art ELECTRIC HEATING PANEL [patent of Ukraine for utility model No. 73933], made in the form of a frame of racks mounted on supports, between which there is a wire heating element with a breathable screen.

A disadvantage of the analogue is the low thermal inertia of the electric heating panel, which results in a sharp drop in the thermal radiation in a heated room and a decrease in ambient temperature when the supply voltage drops.

Also known in the prior art is the ELECTRIC HEATING PANEL [RF patent for utility model No. 19986], comprising a metal casing inside which an electric heating element is located.

The disadvantage of this analogue is also the small thermal inertness of the thin-walled metal case, the consequence of which, when the voltage of the supply network drops, is a sharp drop in thermal radiation in a heated room and a decrease in ambient temperature.

The closest in technical essence is the ELECTRIC HEATING PANEL [German patent for utility model No. 3711035], consisting of a heat-absorbing panel with an electric heating element fixed to its inner side and a reflecting panel with a mirrored inner surface, interconnected, while the heat-absorbing panel is made of natural stone , and on the surface of both panels are made offset through holes for mounting them with bolts.

The disadvantage of the prototype is the long time required to heat a heat-sensitive panel, which has a large thermal inertness, and as a result, it takes a long time to heat up when the appliance is turned on, as well as after a voltage drop in the supply network.

The technical result of the utility model is to reduce the heating time when the appliance is turned on and after the power supply voltage drops.

The specified technical result is achieved due to the fact that the household electric heater, comprising a stone panel and a heating element, is characterized in that the stone panel is made of porcelain stoneware, on one side of which there is a metal casing formed by the rear, upper, lower and side walls, on the inside on the back wall of the housing there is a heating element, which is made in the form of a metal cable in silicone heat-resistant insulation, on the outside there is a block temperature control, which is connected to the bimetallic thermostat and thermostat, which are connected in series through the heating element and to which is connected supply cable.

In particular, the housing is adapted to be mounted to a wall, while holes are provided in the rear wall of the housing, provided with nuts, to which suspension brackets are mounted using screws, in which holes are made for mounting to a vertical surface.

In particular, the casing is made with the possibility of installation on the floor, while in the lower wall of the casing a pair of holes are provided with nuts, to which horizontal bearings with rollers mounted on them are installed with screws.

Brief Description of the Drawings

In FIG. 1 shows a side view of a wall-mounted domestic electric heater.

In FIG. 2 shows a side view of a floor-standing domestic electric heater.

In FIG. 3 is a rear view of a wall-mounted domestic electric heater.

In FIG. 4 is a front view of a floor-standing domestic electric heater.

In FIG. 5 is an electrical diagram of a household electric heater.

In FIG. 6 is an electrical diagram of a heating system of several household electric heaters.

In FIG. Figure 7 shows the diagrams of the supply voltage, heat dissipation by the metal case - a thin line and a porcelain tile - a thick line.

The figures indicate: 1 - body, 2 - granite panel, 3 - temperature control unit, 4 - hanging brackets, 5 - horizontal supports, 6 - rollers, 7 - temperature regulator, 8 - thermostat, 9 - screws, 10 - holes, 11 - heating element, 12 - wall-mounted temperature controller.

Utility Model Implementation

A household electric heater consists of a hollow metal housing 1 (see Fig. 1) formed by the rear, upper, lower and side walls. An electric heating element 11 is installed inside the housing 1 on the inner surface of the rear wall, which is connected to the temperature control unit 3, while the temperature control unit 3 is installed on the outside of the rear wall of the housing 1 (see Fig. 3) and includes a bimetallic temperature controller 7 and a thermostat 8, which are connected in series through the heating element 11 (see Fig. 5). A power cable with an electric plug is connected to the thermostat 7 and thermostat 8.

In a wall-mounted embodiment, two rows of holes are made in the rear wall of the housing 1 (not shown in the figures), provided with nuts (not shown in the figures) on the inside, to which pendant brackets 4 are fastened with screws 9, in which double holes 10 are made for fastenings to a vertical surface.

In the floor embodiment, holes are made in the bottom wall of the housing 1 (not shown in the figures), provided with nuts on the inside (not shown in the figures), to which, in the floor embodiment of the heater, horizontal screws are attached using screws (not shown in the figures) supports 5 with rollers 6 (see. Fig. 2).

The electric heater contains two heat-emitting surfaces with low and high thermal inertness - a metal casing 1, which quickly heats up and quickly cools when the power supply is turned on / off or a drop in voltage, as well as a ceramic granite panel 2, which heats up a long time and slowly cools down when turned on / off or mains voltage drop.

For large heated areas, several wall-mounted electric heaters are combined into a heating system under the control of a wall temperature controller 12 (see Fig. 6), while the number of electric heaters is selected based on the volume and insulation of the room.

A household electric heater is used as follows.

Initially, a household electric heater in accordance with an embodiment is located in a heated room.

For the wall-mounted version, the electric heater is attached to the wall of the heated room through the holes 10 through the holes 10.

For the floor-mounted version, horizontal supports 5 are screwed to the bottom wall of the housing 1 with the rollers 6 mounted on them and an electric heater is placed on the floor of the heated room.

After that, the heating temperature is set on the thermostat 7 and the electric heater is connected to the electric network.

Initially, at time t ₀ -t _{1, the} heating element 11 heats the rear wall of the housing 1 and the air in the volume of the housing 1, while the rear wall of the housing ₁ reaches a predetermined heating temperature and thermal radiation power over a period of time t ₀ -t ₁ .

In the period of time t ₀ -t ₂ heats up the granite panel 2, which at time t ₂ reaches the nominal temperature and the healing power.

Suppose that at time t ₂ a voltage drop occurs in the supply network, while in the period t ₂ -t _{3 the} metal case 1 cools to the maximum possible temperature at a given voltage level of the supply network, while the heat flux from the metal case 1 decreases in proportion to the temperature decrease heated room. During the period of time t ₃ -t _{4 the} voltage of the supply network is stably low, while the heat flux from the metal housing 1 has a minimum value. Also, in the period of time t ₂ -t _{4, the} porcelain tile 2 gradually cools down, while the heat flux from it slightly decreases.

Let the voltage of the supply network begin to increase at time t ₄ , while at the same time t ₄ -t _5, following an increase in voltage, the heat flux from the metal case 1 increases, and the heat flux from the ceramic granite panel 1 continues to decrease briefly.

At time t _6, heat fluxes from the metal casing 1 and the granite panel 2 take a nominal value.

When stabilizing the voltage of the supply network in case of overheating of the heating element 11, the thermostat 7 is activated, which cuts off the voltage supply to the heating element 11, thereby protecting it from burnout.

The use of two heat-emitting surfaces - a ceramic granite panel 2 and a metal case 1 with different inertia of heating and cooling, as well as the location of the heating element on the rear wall of the case 1 allows you to quickly warm up when you turn on the device, and also provide a sufficiently large total thermal radiation power when the supply voltage drops network.

The technical result of the utility model is to reduce the heating time when the appliance is turned on and after the power supply voltage drops, due to the fact that the metal case 1 is formed by the rear, upper, lower and side walls, a heating element 11 is located on the rear side of the housing 1, which is made in the form of a metal cable in silicone heat-resistant insulation, on the outside on the housing 1 is a temperature control unit 3, which includes a bimetallic thermoreg trimmer 8 and the thermostat 7, which are connected in series through the heating element 11 and to which is connected supply cable.

Also, a reduction in heating time when the appliance is turned on and after a voltage drop in the supply network is achieved by stabilizing thermal radiation during short-term voltage drops in the supply network. This is ensured by the fact that the electric heating device contains two heat-emitting surfaces with a large and low thermal inertness of heating and cooling - a granite panel 2, on one side of which there is a metal housing 1 formed by the rear, upper, lower and side walls.

Claims (3)

1. A household electric heater comprising a stone panel and a heating element, characterized in that the stone panel is made of porcelain stoneware, on one side of which there is a metal housing formed by a rear, upper, lower and side walls, a heating element is located on the inside of the rear wall of the housing , which is made in the form of a metal cable in silicone heat-resistant insulation, on the outside on the case is a temperature control unit that is connected to the bimetal Thermostat and thermostat are connected in series through the heating element and to which the power cable is connected. 2. An electric heater according to claim 1, characterized in that the housing is adapted to be fixed to the wall, while holes are provided in the rear wall of the housing, equipped with nuts, to which suspension brackets are mounted using screws, in which holes are made for mounting to a vertical surface . 3. An electric heater according to claim 1, characterized in that the housing is configured to be installed on the floor, while in the lower wall of the housing there are a pair of holes provided with nuts, to which horizontal bearings with rollers mounted on them are installed with screws.

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