CN203517904U - A regenerative energy-saving gas stove - Google Patents

Abstract

A regenerative energy-saving gas stove comprises a gas stove shell, an outer heat insulation plate, a pot cushion, a smoke waste heat inflow port, fins, a coil pipe, an air pipe, a blower, a coil pipe outlet, a gas distribution burner, a natural air pipe, an inner heat insulation plate and a waste gas discharge pipe.

Description

A regenerative energy-saving gas stove

technical field

The utility model belongs to the technical field of cooker devices, in particular to a regenerative energy-saving gas stove.

Background technique

The gas stove is an important cooking utensil in life. At present, there are many kinds of gas stoves in the domestic market, but their working principle is the same as that of heat transfer. They all disperse natural gas on the burner cover under the control of natural gas regulating valve and damper to let it fully burn and form a flame. , and then transfer the heat of the flame to the bottom of the pot. This heat transfer method makes the thermal efficiency of the gas stove very low due to the heat dissipation of the flame to the space outside the gas stove, that is, radiation heat dissipation and convective heat dissipation.

The invention patent with the publication number CN102313303 A discloses "a jet-type gas stove". This invention accelerates the gas and sprays it to the bottom of the pot, which improves the heat transfer efficiency between the gas and the pot. However, there are still technical deficiencies, which are manifested in : Combustion-supporting air only relies on the conventional air intake method and the mesh nozzle structure in front of the burner, which cannot make the gas flow rushing to the bottom of the pot obtain a high speed, and also does not solve the problem of radiation heat dissipation from the gas stove to the space outside the gas stove Technical problem, the thermal efficiency of the gas cooker is still low.

The invention patent with the publication number CN 102102879 A discloses a "heat recovery system for gas stove". The invention reduces the radiation and convective heat dissipation from the burner to the space outside the gas stove by setting a heat recovery device around the burner, and recovers part of the gas However, there are still technical deficiencies, which are manifested in: the heat recovery device arranged around the burner reduces the natural power of the gas flow, which is equivalent to increasing the flow resistance of the gas, which leads to the same natural gas consumption. , insufficient heating at the bottom of the pan, in addition, still can not eliminate the radiation heat dissipation and convection heat dissipation to the space outside the gas range.

How to make the gas stove not only improve the heat transfer efficiency between the gas and the bottom of the pot, but also eliminate the radiation and convective heat dissipation to the space outside the gas stove, and recover and utilize the waste heat of the gas, which is the problem to be solved by the present invention .

Contents of the invention

The utility model provides a regenerative energy-saving gas cooker, which comprises a gas cooker casing, an outer heat insulation board, a pot, a pot pad, a flue gas residual heat inlet, a fin, a coil tube, an air pipe, a blower, a coil tube outlet, a The combination of components such as gas burner, natural gas pipe, inner insulation board and waste gas discharge pipe effectively avoids the technical deficiencies of the prior art gas stove, namely the low heat transfer efficiency between the gas and the bottom of the pot and the low thermal efficiency of the gas stove. 1. There is a large amount of radiation heat dissipation and convection heat dissipation to the space outside the gas stove, the waste heat of the flue gas is not well recycled, and the heat recovery device is installed around the burner to increase the gas flow resistance.

To achieve the above object, the technical solution of the utility model is:

A recuperative energy-saving gas stove, comprising a gas stove shell 1, an outer heat insulation board 2, a pot 3, a pot pad 4, a flue gas waste heat inlet 5, fins 6, a coil 7, an air pipe 8, a blower 9, Coil outlet 10, gas distribution burner 11, natural gas pipe 12, inner insulation board 13 and waste gas discharge pipe 14, the shape of the gas stove shell 5 is a cuboid with a top surface and surrounding side walls, and the gas stove shell 5 The top surface of the top surface is used as a pot stand and there is a round hole in the middle, which is used to place the cooker pot 3, and the side wall of the round hole is provided with a pot pad 4, and an airtightness is formed between the surface of the pot pad 4 and the outer wall surface of the middle and lower part of the pot bottom contact; the inner wall of the shell 1 and the bottom of the gas stove are fixed with an outer heat insulation board 2; the gas distribution burner 11 is located at the inner center of the gas stove casing 1; the gas distribution burner 11 has an inner heat insulation board 13 outside the side wall; The space formed between the heat insulation board 13 and the outer heat insulation board 2 and the coil pipe 7 with the fins 6 fixed on the outer wall form a gas stove regenerator. The outlet of the waste heat flow, the entrance of the waste heat flow of the flue gas is the waste heat flow inlet 5 of the flue gas, and the waste heat flow outlet of the flue gas is the entrance of the waste gas discharge pipe 14, and the waste heat flow inlet 5 of the flue gas is located under the panel of the gas stove casing 1 The outer insulation board 2 is the gap between the top of the gas distribution burner 11 fire cover. The hot plate 2 is fixedly connected.

The inlet end of the coil pipe 7 is fixedly connected to the outlet end of the air pipe 8, and the outlet end of the air pipe 8 is fixedly connected to the inlet end of the gas distribution burner 11; the air pipe 8 is located outside the gas stove shell 1, and the air pipe 8 The inlet port of the gas stove is connected with the blower 9; the waste gas discharge pipe 14 is located outside the gas stove shell 1.

The gas distribution burner 11 is a Venturi tube, the lower part is a hot air pipe, the middle throat is connected with a natural gas pipe 12 and is a mixing chamber for natural gas and hot air, and the upper part is a combustion chamber in which there is an electric pulse ignition Head 17; there is a sub-fire cover 16 at the outlet of the upper part of the Venturi tube, and a transparent shrinkage nozzle 15 is distributed on the sub-fire cover 17.

Compared with the prior art, the utility model also has the following advantages:

1) By setting the pot pad of the gas stove to form an airtight contact with the outer wall of the middle and lower part of the bottom of the pot, prevent the flame of the gas stove and the heat flow of the flue gas from escaping, and eliminate the radiation and convective heat dissipation of the gas stove to the environment;

2) By setting the regenerator to recover the waste heat of the flue gas, reduce the exhaust gas temperature of the gas stove;

3) Set up a blower to pressurize the combustion-supporting air to enhance the effect of the burner flue gas flow on the outer wall of the pot bottom

heating intensity;

4) Compared with the gas stove of the existing technology, the thermal efficiency can be increased from 55% to more than 80%, and the energy saving and environmental protection

The protection effect is very significant.

Description of drawings

Fig. 1 is a structural schematic diagram of a regenerative energy-saving gas stove;

Figure 2 is a schematic structural view of the gas distribution burner.

Detailed ways

The utility model is described further below by specific embodiment:

As shown in Figure 1 and Figure 2, the regenerative energy-saving gas stove, the regenerative energy-saving gas stove, includes a gas stove shell 1, an outer heat insulation board 2, a pot 3, a pot pad 4, a flue gas waste heat inlet 5, and a fin. sheet 6, coil pipe 7, air pipe 8, blower 9, coil pipe outlet 10, gas distribution burner 11, natural gas pipe 12, inner heat shield 13 and exhaust gas discharge pipe 14, and the shape of the gas stove shell 5 is belt It is a cuboid with a top surface and surrounding side walls. The top surface of the gas stove shell 5 is used as a pot support and there is a round hole in the middle. An airtight contact is formed between the surface and the outer wall of the middle and lower part of the bottom of the pot to prevent the flame of the gas stove and the heat flow of the flue gas from escaping; The external heat transfer of the gas stove; the gas distribution burner 11 is used to match the natural gas with the combustion-supporting air, the natural gas is burned to generate high-temperature flue gas, and the outer bottom surface of the pot 3 is heated, which is located in the inner center of the gas stove shell 1; the gas distribution burner 11 There is an inner insulation board 13 outside the side wall, and the inner insulation board 13 is used to prevent the heat transfer around the side wall of the gas distribution burner 11 and enhance the flame temperature; between the inner insulation board 13 and the outer insulation board 2 The space formed and the coil 7 with fins 6 fixed on the outer wall form a gas stove regenerator, which is used to recover the waste heat of the flue gas flow of the gas stove and heat the combustion-supporting air in the coil 7. The gas stove regenerator The heater has the inlet of the flue gas waste heat flow and the outlet of the flue gas waste heat flow, the entrance of the flue gas waste heat flow is the flue gas waste heat flow inlet 5, the outlet of the flue gas waste heat flow is the entrance of the waste gas discharge pipe 14, and the flue gas waste heat flow The inflow port 5 is located in the gap between the outer heat insulation board 2 attached under the panel of the gas stove shell 1 and the top of the gas distribution burner 11 fire cover. The entrance of 14 is fixedly connected with the outer heat insulation board 2 of gas cooker casing 1 bottom.

The inlet end of the coil pipe 7 is fixedly connected to the outlet end of the air pipe 8, and the outlet end of the air pipe 8 is fixedly connected to the inlet end of the gas distribution burner 11; the air pipe 8 is located outside the gas stove shell 1, and the air pipe 8 The inlet end of the gas stove is connected to the blower 9; the blower 9 is used to suck the ambient air outside the gas stove into the air pipe 8; the exhaust gas discharge pipe 14 is located outside the gas stove shell 1, and is used to remove the exhaust gas after reheating.

The gas distribution burner 11 is a Venturi tube, the lower part is a hot air pipe, the middle throat is connected with a natural gas pipe 12 and is a mixing chamber for natural gas and hot air, and the upper part is a combustion chamber in which there is an electric pulse ignition Head 17; there is a sub-fire cover 16 at the outlet of the upper part of the Venturi tube, and a transparent shrinkage nozzle 15 is distributed on the sub-fire cover 17.

The working principle of the utility model is to set the pot pad of the gas stove to form an airtight contact with the outer wall surface of the middle and lower part of the bottom of the pot, so as to prevent the flame of the gas stove and the heat flow of the flue gas from escaping; a regenerator is set to recover the flue gas The residual heat reduces the exhaust gas temperature of the gas stove; the blower is set to pressurize the combustion air to enhance the heating intensity of the burner flue gas flow to the outer wall of the bottom of the pot.

Claims (3)

1. A regenerative energy-saving gas stove, characterized in that it includes a gas stove shell (1), an outer heat insulation board (2), a pot (3), a pot pad (4), a flue gas waste heat inlet (5), Fin (6), coil (7), air pipe (8), blower (9), coil outlet (10), gas distribution burner (11), natural gas pipe (12), inner heat shield (13 ) and exhaust gas discharge pipe (14), the shape of the gas stove casing (5) is a cuboid with a top surface and surrounding side walls, the top surface of the gas stove casing (5) is used as a pot support and there is a round hole in the middle, the The round hole is used to place the cooker pot (3), and the side wall of the round hole is provided with a pot pad (4), and an airtight contact is formed between the surface of the pot pad (4) and the outer wall surface of the middle and lower part of the bottom of the pot; The outer heat insulation board (2) is fixed on the wall and the bottom of the gas stove; the gas distribution burner (11) is located at the inner center of the gas stove casing (1); the gas distribution burner (11) has an inner heat insulation board outside the side wall ( 13); the space formed between the inner heat insulation board (13) and the outer heat insulation board (2) and the coil (7) with fins (6) fixed on the outer wall form a gas stove regenerator, the gas stove The regenerator has the inlet of the flue gas waste heat flow and the outlet of the flue gas waste heat flow, the inlet of the flue gas waste heat flow is the flue gas waste heat flow inlet (5), and the outlet of the flue gas waste heat flow is the exhaust gas discharge pipe (14). Inlet, flue gas residual heat flow The inlet (5) is located in the gap between the outer heat insulation board (2) attached under the panel of the gas stove shell (1) and the top of the fire cover for the gas distribution burner (11), and the flue gas residual heat flow The inlet (5) is a circular channel opening, and the inlet of the waste gas discharge pipe (14) is fixedly connected with the outer heat shield (2) at the bottom of the gas stove casing (1). 2. A regenerative energy-saving gas stove according to claim 1, characterized in that the inlet end of the coil (7) is fixedly connected to the outlet end of the air pipe (8), and the air pipe (8) The outlet end is fixedly connected to the inlet end of the gas distribution burner (11); the air pipe (8) is located outside the gas stove casing (1), and the inlet end of the air pipe (8) is connected to the blower (9); the waste gas discharge pipe (14 ) is located outside the gas hob housing (1). 3. A regenerative energy-saving gas stove according to claim 1 or 2, characterized in that the gas distribution burner (11) is a Venturi tube, the lower part is a hot air tube, and the middle throat It is connected with a natural gas pipe (12) and is a mixing chamber of natural gas and hot air. The upper part is a combustion chamber, and there is an electric pulse ignition head (17) in the combustion chamber; there is a fire cover (16) at the outlet of the upper part of the Venturi tube. Permeable shrinkage nozzles (15) are distributed on the fire cover (17).

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