RU964U1 - Electric heater - Google Patents

Abstract

An electric heater comprising a housing with a heated medium equipped with inlet and outlet nozzles and at least one heating element installed therein with means for supplying electricity, a heat transfer unit located in the holes of the separation flange connected to the body, characterized in that the heat transfer unit is made in the form a heat pipe, on the evaporative end of which a surface resistive heater is applied by a diffuse method.

Description

ELECTRIC HEATER A utility model relates to the field of heat engineering and can

be used, for example, for heating a liquid or gaseous medium (water, air, lubricating oils, glycerin, etc.) both in the field of consumer services, and in production and technological processes that require heating of various environments in the chemical, oil, perfumery, food and other industries.

Known industrial and domestic heaters containing a housing with a heated medium, inside of which there are thermoelectric heaters of the type TEN, for example, a small-sized electric wire heater EVP produced by the cooperative TEST, the city of ftbiacca of the Chelyabinsk region (see Appendix I).

The main problem of using such heaters is their lack of reliability, determined by the rapid failure of the heater.

Also known is the EVBO-5 / 1.5 electric heater, made in accordance with GOST 23110-84, manufactured by the Omsk Production Association Irtysh, in which an electric coil is used as a heat-generating element that is in direct contact with the heated medium. The case of such an electric heater requires mandatory grounding. Such devices are not safe enough and have low reliability.

The closest in technical essence is the heater po.s. USSR F 16Г7298 F 28 Ј 15/00, dated 02.21.89, containing a housing with a heated medium equipped with inlet and outlet pipes and at least one heating element installed therein with means for supplying electricity. Transmitting

1

wael is placed in the holes of the separation flange connected to the housing. Thermosiphons were used as tesuleous nodes.

The heat transfer units of such heaters can only be oriented vertically, which is associated with the peculiarity of the thermosiphon only in almost vertical position, which limits the range of their use.

In such a device, heat transfer from a heat-generating element connected with an electric energy source and a heat-transfer unit is “ineffective”. In addition, the device is not reliable due to the use of heating elements.

The objective of the utility model is to create an electric and fireproof device, highly reliable, with well-organized transfer of heat from an electric energy source to a heated medium.

The problem is solved in that in an electric heater containing an inlet and outlet nozzles, a housing with a heated medium and at least one heating element installed therein, with means for supplying electricity, a heat transfer unit located in the openings of the separation flange is connected - ,; with a housing, the heat-transfer unit is filled in the form of a heat pipe, on the evaporative end of which a diffuse surface surface resistive heater is applied.

Applying a diffuse method to the evaporating end of the heat pipe of a surface heater,:; p using advanced modern technology (for example, the USSR AS GTZOOSSH N 05 V 3/28, R.05.88g,) allows the conversion of electrical energy and the transfer of the corresponding heat flow with a minimum temperature difference between the heating element and the heated medium, which allows you to create an electric heater with a high heating effect

The complete exclusion of direct contact of the structural elements of the electric heater with the heated medium allows to ensure high electrical and fire safety of the device during its operation, as well as significantly increase its reliability.

The utility model is illustrated by graphic materials.

In Fig. I is a perspective view of a domestic electric heater with six heat pipes for a flowing medium;

figure 2 is a perspective view of a flash-transmitting unit with a thermal connector and a surface resistive element;

in FIG. 3 is a general sectional view of an electric heater on two pipes for stagnant water;

in FIG. 4 is an embodiment of a general view of an electric heater for a chemical reactor;

in FIG. 5 - section A “A of FIG. 4.

Here are examples of the implementation of the claimed utility model. Domestic electric heater for a flowing environment with six thermal.

pipes (figure 1) contains a housing I, equipped with input ° - and output 3 nozzles. The housing I is filled with medium 4 to be heated, for example, with water. A heat-transfer unit is installed inside the casing, made in the form of a module of six heat pipes 5, located in the holes of the separation flange 6. Above the separation flange 3, there are condensation zones of the heat pipes washed by the heated medium. The evaporative ends of the heat pipes 5 are located below the separation flange 5 and do not have direct contact with the heated medium 4. A surface resistive heater 7 is applied to the evaporative ends of the heat pipes 5 or on the developed surface of the evaporative end of the heat pipes 5, made, for example, in this particular case, in the BIDE of the thermal connector 8, into which the evaporative ends of the heat pipes are pressed 5. The surface resistive heater 7 is connected directly to the means for supplying electricity 9 .

In FIG. Figure 2 shows a fragment of an electric heater module, in which the elements of the module are conventionally spaced into spaces for understanding the internal structure of the module. The dotted line conventionally shows the location of the separation flange 0.

The device operates as follows.

The inlet pipe 2 is connected via a connecting hose to a source of flowing medium, for example, a water supply network. The outlet pipe H is connected to the consumer using a connecting hose. The housing 1 is filled with a flowing medium, for example, water from the dividing flange 6 to the level of the outlet pipe 3. The device is connected to the network using means for supplying electric energy., 9. In this case, heating of the surface reeistive heater 7 occurs as a result of the conversion of electrical energy into heat and almost all of the generated heat flow through the heat connector 8 is transferred to the non-existent end of the heat pipes 5. Then, through the heat pipes 5 with a small temperature difference, bypassing the separation flange о, heat; -7

 Your flow is transferred to the condensation zone of the heat pipes 5. Due to the fact that the temperature field from the condensation zone of the heat pipes 5 is almost uniform, a uniform and fairly fast transfer of heat from the heat pipes 5 to the heated medium 4 occurs inside the device’s case. Thus, the flow medium 4, washing the condensation zone of the heat pipes 5, heats up to a predetermined temperature and the heated medium through the outlet pipe 3 enters the consumer.

Consider an example of an electric heater on two heat pipes for a non-flowing medium (Fig.Z). The electric heater contains a housing 1, equipped with an input 2 (refueling) and output 3 (drain) pipes. Case I is filled with medium 4 to be heated. Inside the housing I, a heat transfer unit is installed, made in the form of a module of two heat pipes 5, located in the holes of the separation flange b. A surface resistive heater 7 is applied to a heat connector 8 into which the evaporative ends of the heat pipes 5 are pressed in. The surface resistive heater is connected to means for supplying electricity 9.

The device operates as follows. Through the inlet pipe 3 the housing .T of the device is filled with medium 4 to be heated, while the outlet pipe 3 is closed. Through the means of supply 9 connect the device to a source of electricity. The surface resistive heater 7 is heated. The heat flux is transferred to the medium in the same way as described above. Moreover, in a non-flowing medium, the heat transfer process between the condensation zone of heat-ix pipes 5 and medium 4 occurs by natural convection of the heated medium. After heating the medium 4 to a predetermined temperature, the device is disconnected from the network and the heated medium is supplied to the consumer through the outlet pipe 3. This design of the electric heater is advisable to use in electric heaters, samovars, kettles, etc.

Consider an example of the use of an electric heater for a chemical reactor (Fig. 4 and Fig. 5).

For,; .... obtaining a high-quality final chemical product R chemical reactor 10, it is necessary to supply ingredients with a given temperature and uniform temperature distribution throughout the volume. In a specific example, nine ingredients are supplied to reactor 10, each of which is in a separate section II.

3, in turn, each section II is structurally an electric heater, shown in FIG. I. In FIG. 5 shows the arrangement of sections in the space under the TO reactor. In a section A-A, an electric heater body T filled with an ingredient (a heated medium) and modules of six heat pipes 5 are visible, the vaporization of which does not come into contact with the ingredient.

The process of heating each ingredient is similar to that described above. Then, the uniformly heated ingredient is fed to the chemical reactor 10.

The electric heater of the claimed design is technologically advanced to manufacture, easy to operate, fireproof and provides effective uniform heating of the medium throughout the volume.

Authors-applicants: fc Novitskaya T.Ya. Shcherbakov AL. -ffi Max ° RT ° va L, M, C4yam Kozyreva S.N. 2d # Postolov Yu.M. / Htx TynKaflo H.A.

Claims (1)

An electric heater comprising a housing with a heated medium equipped with inlet and outlet nozzles and at least one heating element installed therein with means for supplying electricity, a heat transfer unit located in the holes of the separation flange connected to the body, characterized in that the heat transfer unit is made in the form a heat pipe, on the evaporative end of which a surface resistive heater is applied by a diffuse method.