EA037076B1 - Device for air ventilation above a cooking stove - Google Patents

Abstract

The invention relates to a device for ventilation of kitchen equipment, in particular, of the kitchen space above a cooking stove, which can operate independently, or be attached to a kitchen ventilation exhaust system. As a result of heating of a thermal collector (27) heat is supplied to an inner current collector (23), i.e. heats prisms (21) made of a thermoelectrical material. Because of the temperature difference of the prism (21) bases attached to the inner current collector (23), to the external current collector (17), which is due an intense heat transfer from the cooling collector (15) to the environment, a thermal EDF appears, which causes occurrence of current closing via current-conducting segments (24) of the inner current collector (23), prisms (21), current-conducting segments (18) of the external current collector (17), terminals (26), feeding wires and drive motor. In an optional embodiment said current is also supplied to light fixtures (11). Additional use of thermal EMF reduces the amount of electrical power consumed from the external mains, i.e. improves energy efficiency of the device for air ventilation above the cooking stove.

Description

BUDGETARY EDUCATIONAL INSTITUTION OF HIGHER EDUCATION PETERSBURG STATE UNIVERSITY OF WAYS

MESSAGES OF THE EMPEROR ALEXANDER I (RU) (72) Inventor:

Kim Konstantin Konstantinovich (RU) (56) RU-U1-91751

RU-C2-2315242

EA-B1-028025

DE-AI-3918870

037076 B1

037076 Bl (57) The invention relates to a device for ventilation of kitchen equipment, in particular the kitchen space above the stove for cooking, which can work autonomously or be connected to the exhaust ventilation system of the kitchen. As a result of heating the thermal collector (27), heat is supplied to the internal current collector (23), i.e. heats the prisms (21) made of thermoelectric material. Due to the temperature difference between the bases of the prisms (21) attached to the internal current collector (23), to the external current collector (17), which is due to the intense heat transfer from the cooling collector (15) to the external environment, a thermal EMF arises, which causes the occurrence of a current that closes through the electrically conductive sections (24) of the internal current collector (23), the prisms (21), the electrically conductive sections (18) of the external current collector (17), terminals (26), supply wires and the drive motor. It is possible that this current also powers the luminaires (11). Additional use of thermo-EMF reduces the amount of electrical energy consumed from the external network, i.e. increases the energy efficiency of the device for ventilating the air above the cooking stove.

The invention relates to a device for ventilation of kitchen equipment, in particular of the kitchen space above the stove for cooking, which can work autonomously or be connected to an exhaust ventilation system of the kitchen.

Known exhaust hood for drawing and / or cleaning contaminated media (RU 2315242, F24C 15/20, 20.01.2008), containing a hood, which is installed above the kitchen equipment. The hood body contains an inlet and an outlet. A fan is located in the case. The incoming air is sucked in by the fan and passed through a filter located in the housing. After the filter, air passes through an outlet to an air duct, which discharges the air into the ventilation system or the environment. The filter is located at an angle relative to the housing. The filter is surrounded by a visor. A screen is located in front of the filter, which partially lets air through itself. Its dimensions are chosen so that a free suction gap remains, through which air that has not passed through the screen can penetrate to the filter. The fan speed is adjustable.

Due to the fact that the operation of the exhaust of polluted air is associated with the operation of the electric drive of the fan, this device consumes electrical energy, which causes its low energy efficiency.

Known is a device for ventilation of air above the cooking plate (RU 91751, F24F 7/06, 02/27/2010), selected as a prototype, containing a housing installed above the cooking plate, in which a fan with a drive motor and a filter system are installed, with In this case, the body is made with a visor located above the cooking stove from the side of its front panel, the filter system includes grease filters made of multilayer aluminum mesh and carbon filters installed downstream of the latter along the flow of the cleaned air to neutralize odors, the visor is formed by a section protruding beyond the body, smoothly a curved, downwardly bent plate forming the upper housing cover, the lower surface of the housing in its middle part is formed by grease filters made in the form of removable panels bent in the longitudinal direction into the housing, from the side of the rear wall of the housing the lower surface of the housing is formed flat a horizontal plate, in which the lamps, mainly halogen ones, are installed, and is coupled with the concave surface of the grease filters, and on the front part of the upper housing cover there is a touch control panel for the operation of the device.

The disadvantage of the prototype is its low energy efficiency, which is due to the need to consume electrical energy by the drive motor.

The objective of the invention is to improve the energy efficiency of the device for ventilation of air above the stove for cooking by reducing the consumed electrical energy from the external network to power the drive motor.

The technical result is achieved by the fact that in a device for ventilation of air above the cooking stove, comprising a housing installed above the cooking stove, in which a fan with a driving motor and a filter system are rigidly fixed, the housing is made with a visor located above the cooking stove, the filter system includes grease filters, behind which carbon filters are installed along the flow of the cleaned air, the visor is formed by a section of a smoothly curved, downwardly curved plate protruding beyond the body, forming the upper housing cover, the lower surface of the body in its middle part is formed by grease filters, on the lower surface of the case, the lamps are rigidly fixed, a button panel for controlling the operation of the device is installed on the front of the upper case cover, the upper case cover is made in the form of a cooling collector, on the inner surface of which an electrical insulating layer is rigidly fixed a junction to which an external current collector is rigidly attached, which is a periodic system of alternating electrically conductive and electrically insulating sections, on each electrically conductive section with the help of a cold junction commutating solder two prisms made of n- or p-type thermoelectric material are fixed by their bases, and their others the bases are attached to the outer surface of the internal current collector, which is a periodic system of alternating electrically conductive and electrically insulating sections, with the help of a hot junction commutation solder, and periodic systems of alternating electrically conductive and electrically insulating sections of the external and internal current collectors are oriented in such a way that opposite the electrically conductive section of the external current collector collector, an electrically insulating section of the internal current collector is located, and the two extreme electrically conductive sections of the external current collector are equipped with terminals, which They are connected to the drive motor, a heat collector is rigidly attached to the internal current collector.

Current collector terminals can also be connected to luminaires.

FIG. 1 shows a longitudinal section of a device for ventilating air above the cooking plate, and FIG. 2 shows a cross-section of a fragment of the upper housing cover.

The device for ventilation of air above the cooking plate contains a housing 1 installed above the cooking plate (not shown in the drawing), in which valves are installed

- 1 037076 torus 2 with drive motor 3 and filter system. The body 1 is made with a visor 4 located above the cooking plate from the side of its front panel. The filter system includes grease filters 5 made of multilayer aluminum mesh and carbon filters 6 installed downstream of the latter along the flow of the cleaned air to neutralize odors. The visor 4 is formed by a section of a smoothly curved, bent down plate that extends beyond the body 1, forming the upper cover 7 of the body 1. The lower surface 8 of the body 1 in its middle part is formed by grease filters 5 made of a multilayer aluminum mesh in the form of removable, curved concave in the longitudinal towards the inside of the housing 1 of the panels. On the side of the rear wall 9 of the housing 1, the lower surface 8 of the housing 1 is formed by a flat horizontal plate 10, in which lamps 11 are installed, for example, from incandescent or halogen lamps, and is mated with the concave surface of the grease filters 5. On the front part of the upper cover 7 of the housing 1 is installed button panel for controlling the operation of the device 12. The upper wall 13 of the housing 1 is made with openings 14 for the outlet of purified air from the device. The openings 14 can be made closer to the rear wall 9 of the housing 1, if the purified air is directed into the exhaust pipe of the kitchen ventilation system, or closer to the top cover 7 of the housing 1, if a circulating air ventilation system is organized in the kitchen through the ventilation device.

The upper cover 7 of the housing 1 is made in the form of a cooling collector 15 (Fig. 2), which can be made with cooling fins, which are not shown in the drawing, and on the inner surface of which an electrical insulating layer 16 is rigidly fixed, to which the external current collector 17 is rigidly attached, which is a periodic system of alternating electrically conductive 18, for example, copper or aluminum, and electrically insulating 19 sections, for example, mica or fluoroflogopite, on each electrically conductive section 18 with the help of a cold junction 20 commutating solder, two prisms 21 made of thermoelectric material n - or p-type, and their other bases are attached to the outer surface of the internal current collector 23, which is a periodic system of alternating electrically conductive 24 and electrically insulating 25 sections, with the help of a commutation solder of a hot junction 22, and periodic systems of alternating electrically conductive their 18, 24 and electrical insulating sections 19, 25 of the external and internal current collectors 17, 23 are oriented in such a way that the electrical insulating section 19 of the internal current collector 23 is located opposite the electrically conductive 18 section of the external current collector 17, and the two extreme electrically conductive sections 18 of the external current collector 17 equipped with terminals 26, a thermal collector 27 is rigidly attached to the internal current collector 23.

Terminals 26 are connected by wires to the drive motor 3 (Fig. 1). A variant is possible when the terminals 26 (Fig. 2) are also connected to the lamps 11 (Fig. 1).

The device operates as follows. The sucked cleaned air by the operating fan 2 (Fig. 1) is first sucked into the grease filters 5, where, due to the turbulence of the flow created by the aluminum nets, the fat droplets are deposited on the surface of the nets, and then passes through the carbon filters 6, where the remaining tiny particles of fat and other substances are retained , which create a smell, after which the fan 2 of the purified air from the housing 1 of the device returns to the kitchen or is directed into the exhaust pipe (not shown in the drawing).

As a result of heating the heat collector 27 (Fig. 2) by hot air flows, heat is supplied to the internal current collector 23, i.e. on the electrically conductive 24 sections, and subsequently heats the prisms 21 made of thermoelectric material. Moreover, the bases of the prisms 21 attached to the electrically conductive sections 24 have a temperature higher than the bases of the prisms 21 attached to the inner surface of the external current collector 17. This is due to the intense heat transfer from the cooling collector 15 to the external environment. As a result of the specified temperature difference, a thermoelectromotive force arises on the prisms 21, which causes the occurrence of a current that closes through the electrically conductive sections 24 of the internal current collector 23, the prisms 21, the electrically conductive sections 18 of the external current collector 17, the terminals 26, the lead wires and the drive motor 3. The mode is possible work, when the current of thermoelectromotive force also goes to power the lamps 11 (Fig. 1) of the operating device for ventilation of air above the stove for cooking.

As can be seen, the additional use of the thermoelectromotive force, which is caused by the heating of the housing 1 of the device for ventilating the air above the cooking plate, lowers the value of the electrical energy consumed from the external network, i.e. increases its energy efficiency.

Claims (2)

1. A device for ventilation of air above the cooking stove, comprising a housing installed above the cooking stove, in which a fan with a drive is rigidly fixed - 2 037076 electric motor and a filter system, the body is made with a visor located above the stove for cooking, the filter system includes grease filters, behind which carbon filters are installed along the flow of the cleaned air, the visor is formed by a section protruding outside the body, smoothly curved, bent down the plate forming the upper housing cover, the lower surface of the housing in its middle part is formed by grease filters, lamps are rigidly fixed on the lower surface of the housing, a button panel for controlling the operation of the device is installed on the front part of the upper housing cover, characterized in that the upper housing cover is made in the form of a collector cooling, on the inner surface of which an electrical insulating layer is rigidly fixed, to which an external current collector is rigidly attached, which is a periodic system of alternating electrically conductive and electrically insulating sections, on each electrically conductive Two prisms made of n- or p-type thermoelectric material are fixed by their bases with the help of a cold junction commutating solder, and their other bases are attached to the outer surface of the internal current collector, which is a periodic system of alternating electrically conducting and electrical insulating sections, and periodic systems of alternating electrically conductive and electrically insulating sections of the external and internal current collectors are oriented in such a way that an electrically insulating section of the internal current collector is located opposite the electrically conductive section of the external current collector, and the two extreme electrically conductive sections of the external current collector are equipped with terminals that are connected to the drive electric motor, a heat collector is rigidly attached to the internal current collector. 2. A device for ventilation of air above the cooking plate according to claim 1, characterized in that the terminals of the current collector are connected to the lamps.