RU127434U1 - ELECTRIC WATER HEATER - Google Patents

Abstract

The inventive utility model relates to electric water heaters of a fluid, in particular water, with immersion heating elements. The essence of the utility model is to reduce energy consumption, improve usability, increase productivity and product safety. The claimed electric water heater contains a housing on which mounting brackets are located, which serve to facilitate the installation of the claimed utility model. At least two tanks are placed inside the housing, interconnected by pipes, the minimum number of which is two or more. One of the tanks has an inlet pipe used to supply cold water. In another tank there is a hot water outlet pipe, while the upper part of the pipe (intake neck inside the tank) is located between the upper and middle parts of the tank. The heating element is located in at least one of the tanks, in the lower end part, equipped with a thermostat. The cold water supply pipe is equipped with a combined device, which serves as a valve, and also serves to drain the water from the tanks and flush it. The control unit is mounted on the housing.

Description

The claimed technical solution relates to the electric power industry, in particular to heaters of the current medium, namely water, with immersion heating electric elements.

Known electric water heater (patent RU 91414, IPC F24H 1/20, published 02/10/2010), containing a plastic protective case with a lid and with mounting brackets, in which a tank is installed, having a pipe for supplying cold water, a pipe for draining hot water, safety a valve, a wiring diagram having at least one heating element, at least one temperature sensor, at least one temperature controller, a power source and an indicator connected to the control and indication unit, a cat panel cerned mounted on the front side of the housing, while the space between the tank and the housing is filled with thermal insulation, characterized in that the one-way pressure relief valve is configured and installed in the cold water supply compartment. The disadvantages of this utility model are mainly limited operational capabilities. In order to increase the useful capacity of an electric water heater with one internal tank, its internal diameter should be increased, which inevitably leads to an increase in the overall dimensions of the electric water heater as a whole.

Closest to the claimed solution is an electric water heater (patent RU 44373, IPC F24H 1/20, published March 10, 2005) containing two tanks connected by two pipes, the first heating element installed in one of the tanks, an inlet pipe for supplying cold water, located in the lower part of one of the tanks, and the outlet pipe for the release of hot water located in the upper part of the other tank, characterized in that the tanks are located inside the protective housing filled with thermal insulation, the inlet pipe for supplying cold water nabzhen reflux safety valve in one of the tanks mounted spout, and connecting pipes connect the adjacent walls of tanks in their upper and lower parts. The disadvantages of the known solutions are the presence of only a check valve located on the inlet pipe. Such a valve prevents the emptying of the tanks in the event of a loss of water supply or a pressure drop in the water supply network, but does not protect the structure from the increased pressure inside the tanks, which may occur in the event of failure of the elements of the electrical circuit. Also, a drain pipe is installed in the lower part of one of the tanks, which serves to flush the heater, the presence of an additional pipe complicates the technical production, and during operation there is an increased risk of a malfunction in the form of a water leak. Two internal tanks limit operational capabilities, and an increase in their volume inevitably leads to an increase in overall dimensions. Also, two connecting pipes, in the case of an increase in the useful volume of the tanks, are not enough for efficient circulation of water between the tanks, which leads to an increase in the time required for heating the water and, as a result, increased energy consumption.

The inventive utility model overcomes the above disadvantages and makes the proposed model of an electric water heater more reliable, safe, provides high efficiency of water heating, provides an advantage in manufacturing and assembly.

To solve the tasks, the claimed utility model contains a housing on which mounting brackets are located, which serve to facilitate the installation of the claimed utility model. Inside the housing vertically placed tanks (at least two), located relative to each other in parallel. The tanks are interconnected by pipes, the minimum number of which is two or more. In one of the parallel tanks, in the lower part, an inlet pipe is installed, which serves to supply cold water. In another tank there is a pipe for the outlet (outlet) of hot water, also mounted in the lower part of the tank, while the upper part of the pipe (intake neck inside the tank) is located between the upper and middle parts of the tank. The space between the protective casing and the tanks is filled with thermal insulation. The heating element is located in at least one of the tanks, in the lower end part, equipped with a thermostat. The cold water supply compartment is equipped with a combined device, which serves as a valve, with the possibility of automatic emergency pressure reduction when it is higher than 0.7 MPa with a constant open position of its opening, and also used to drain water from the tanks and flush it, while the water drain control handle is installed on the safety the valve and is fixed on it in the idle position with a screw. A control unit is installed on the body of the electric water heater, which can be either mechanical or electronic.

The above signs are significant and interconnected causation, together sufficient to achieve a technical result.

Figure 1 (a schematic representation of the surface of the tank, the control unit on it), figure 2 (an embodiment of an electric water heater), figure 3 (combined device), the essence of the proposed utility model is explained.

The proposed utility model is illustrated by a specific implementation example, which is not the only possible one, but clearly demonstrates the possibility of achieving a set of essential features of a given technical result.

The proposed utility model contains a housing 1 on which mounting brackets are located (not shown in the figure), which serve to facilitate the installation of the claimed utility model. Inside the housing there are tanks 2 (at least two) located parallel to each other. The tanks are interconnected by pipes 3, the minimum number of which is two or more. In one of the parallel tanks, in the lower part, an inlet pipe 4 is installed, which serves to supply cold water. In another tank there is a hot water outlet (outlet) 5, also mounted in the lower part of the tank, while the upper part of the pipe 6 (intake neck inside the tank) is located between the upper and middle parts of the tank 2. The space between the protective casing and the tanks is filled with thermal insulation 7 The heating element 8 is located in at least one of the tanks 2, in the lower end part, equipped with a thermostat. The cold water supply pipe is equipped with a combined device (figure 3), which serves as a valve, with the possibility of automatic emergency pressure reduction when it exceeds 0.7 MPa with a constant open position of its opening 9, and also serves to drain water from tanks 2 and flush it, while the handle the water discharge control 10 is installed on the safety valve and fixed to it in the inoperative position (position 1) with a screw 11. On the body of the electric water heater (figure 1) 8, a control unit 12 is installed, which It can be made both mechanical and electronic.

Electric water heater operates as follows.

The cold water supply pipe 4 is connected to the water supply system, which ensures filling the tanks with cold water. Before connecting to the network, the tanks must be filled with water. Cold water through the inlet pipe 4 enters the first tank, and then through the connecting pipes 3 enters the adjacent tanks. As soon as the tanks are full, water through the outlet pipe for hot water 5 will flow out. After filling the tanks with water, the electric water heater is connected to the mains, the power indicator lights up. Protection against overheating is provided due to the fact that the heating element 8 does not heat up from the beginning to the end, since the temperature limiter switch is activated. When the temperature of the water in tank 2 reaches the set value, the power turns off automatically and the heating procedure stops, the heating indicator goes off and the heater switches to the temperature maintenance mode. When the water temperature in the tank drops to a certain level, the heating mode will automatically turn on. The temperature in tank 2 can be selected in any range from 20 ° C to 75 ° C. To drain the water from the tank 2, first close the water supply tap, open the water drain tap, then use the tools to unscrew the screw 11 on the combination device (Figure 3) and set the handle 10 to the water drain position (position 2).

The utility model meets the condition of patentability "industrial applicability", since its implementation is possible using existing means of production using known technological processes.

Claims (6)

1. An electric water heater, including a protective case, two tanks are vertically located inside the case, placed parallel to each other, the tanks are interconnected by two pipes, in one of the parallel tanks in the lower part there is an inlet pipe used to supply cold water, in the second tank there is a hot water outlet pipe mounted in its lower part, and its intake neck inside the tank is located between the upper and middle parts of the tank, the heating element is located in one of the tanks in the lower end part and is equipped with a thermostat, the space between the body and tanks is filled with thermal insulation, characterized in that the cold water supply pipe is equipped with a combined device serving as a valve, with the possibility of automatic emergency pressure reduction when it exceeds 0.7 MPa with a constant open position holes, as well as serving to drain the water from the tanks and flush it, while the handle to control the water drain is installed on the safety valve and is fixed on it in the idle position when screw help. 2. Electric water heater according to claim 1, characterized in that the tanks are interconnected by at least three connecting pipes. 3. The electric water heater according to claim 1, characterized in that it contains at least three tanks, interconnected by pipes. 4. An electric water heater according to any one of claims 1 to 3, characterized in that it is equipped with at least one additional heating element. 5. The electric water heater according to claim 1, characterized in that the control unit located on the protective housing is mechanical. 6. The electric water heater according to claim 1, characterized in that the control unit located on the protective housing is made electronic.

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