CN2059486U

CN2059486U - Energy-saving infrared-radiation-type domestic gas stove

Info

Publication number: CN2059486U
Application number: CN 89221212
Authority: CN
Inventors: 牛广傚; 牛晓旭
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-12-15
Filing date: 1989-12-15
Publication date: 1990-07-18

Abstract

The utility model provides an energy-saving infrared-radiation-type domestic gas stove which belongs to the improvement of a domestic gas stove. The energy-saving infrared-radiation-type domestic gas stove is mainly characterized in that the furnace body and injector of a furnace head assembly are closed by the a shell, which causes a preheating chamber with certain volume to be formed between the shell and the furnace body, and a combustion-supporting air inlet is only arranged on the bottom face of the sealed shell. The energy-saving infrared-radiation-type domestic gas stove has the advantage of high thermal efficiency. The thermal efficiency can reach more than 65%, and the fuel saving can reach about 5-10%.

Description

Energy-saving infrared-radiation-type domestic gas stove

The energy-saving infrared radiation type household gas utensils that the utility model relates to belong to the improvement design of infrared radiation type household gas utensils.

At present, the infrared radiation type household gas utensils with its Heat stability is good, sufficient combustion, do not pollute cooker, thermal efficiency advantages of higher and being widely used, but the thermal efficiency index of the public kitchen range of this class is also had great potentialities and can be dug.The factor that existing kitchen range influence the thermal efficiency mainly contains two.The one, body of heater outer surface dissipated heat is that 330 square centimeters burner is an example with the body of heater surface area, and its body of heater temperature rise can reach 170 ℃ in combustion process, and makes heat energy dissipation account for more than 30% of fuel gross calorific power to the heat in space by high-temperature furnace body.The 2nd, the invalid air after the burning is taken away heat, combustion air is natural wind temperature lower (room temperature is about 20 ℃ usually) in the body of heater owing to enter, only there is the oxygen about 21% to play combustion-supporting effect in the combustion air, all the other account for nitrogen of 79% etc. and are heated to 800 ℃, though most of heat is passed to heated object (as cooker etc.), but its temperature is still more than 150 ℃ after leaving cooker, a part of heat is taken away, this part heat of taking away is relevant with the initial temperature of combustion air, and this part heat accounts for more than 5% of fuel gross calorific power.

The utility model improves thermal efficiency index reducing above-mentioned heat-energy losses, and then energy savings is purpose, and improving design and providing a kind of is the energy-saving infrared radiation type household gas utensils of technological means to reclaim, to utilize the body of heater dissipated heat again.

The technical scheme that achieves the above object and adopt is: utilize case body that body of heater, the injector of nozzle assembly are closed, make and form the preheating chamber with certain volume between shell and the body of heater.And only the combustion air air admission hole is set in sealing shell bottom surface.This programme also comprises the concrete structure key element design of the relative nozzle assembly of sealing shell, and has the attached improvement design that helps the injector of air inlet duct.

The utility model has the high advantage of the thermal efficiency than existing infrared family expenses kitchen range, and its thermal efficiency can reach more than 65%, and energy-conservation about 5～10%.

Accompanying drawing has provided embodiment of the present utility model.Fig. 1 is the structural representation of this energy-saving infrared radiation type family expenses infrared gas range tool.Fig. 2 is the cross section view of injector.Fig. 3 is the dextrad view of Fig. 2.

Further specify below in conjunction with accompanying drawing.Referring to Fig. 1, these kitchen range comprise the nozzle assembly of being made up of body of heater (1), pottery plate (2), injector (3), nozzle (4), and its structure of this nozzle assembly and operation principle belong to substantially that the known technology category is no longer superfluous to be stated.The characteristics of these kitchen range are also have the shell (5) that body of heater (1), injector (3) are closed, and make after the sealing and formed a preheating chamber (6) between shell (5) and the body of heater (1) with certain volume, the bottom surface that is shell (5) on the bottom panel that constitutes this preheating chamber (6) is provided with combustion air air admission hole (7), all has big gap between the circumference of sealing rear furnace body (1) and bottom surface and shell (5) housing.

The utility model promptly will reach energy-conservation purpose in the improvement design to the infrared radiation type household gas utensils, CO content meets national standard when making the kitchen range burning work after the improvement again, so the inventor is to improve the thermal efficiency, reducing CO content is starting point, and the structural element of kitchen range has been carried out improving design.The inventor draws as drawing a conclusion through theoretical calculating and a large amount of experiment:

The size of the volume of choose reasonable preheating chamber (6) and combustion air air admission hole (7) at first.If consider that with the raising preheated air temperature volume of preheating chamber (6) is the smaller the better from reducing body of heater (1) radiation loss, but this contradicts with the content that reduces CO again.So being 1:5.5, the ratio of the volume of the volume of body of heater (1) and preheating chamber (6) is the best to 1:6.The formation of the size of same air admission hole (7) and the air duct of preheating chamber (6) also has a significant impact CO content.The choose reasonable of these kitchen range is that the ratio of infra-red radiation pottery plate (2) area and shell (5) floor space is 1:4; And the ratio of the air admission hole (7) of shell (5) bottom surface and shell (5) base area is that 1:20 is to 1:22.As long as after the size of selected pottery plate (2) (present embodiment selects pottery plate (2) to be of a size of 178 millimeters of φ), convert like this, can obtain comparatively ideal kitchen range structural element by the aforementioned proportion relation.

Next is the structure improvement of injector (3).Referring to Fig. 2, Fig. 3.In order to increase by the preheated air amount of injection, reduce CO content in the waste gas, established the attached air inlet duct (8) that helps in two roads newly on the ground of injector (3) conical surface position two side symmetries.Injector after the improvement (3) can increase injection air area about 20%.

Why the energy-saving infrared radiation type household gas utensils that present embodiment provides can reach the effect of the thermal efficiency more than 65%, the fuel savings energy 5～10%, reason is to be formed with preheating chamber (6) by shell (5) sealing burner (1), the existence of this preheating chamber (6) has reduced body of heater (1) radiation loss on the one hand, collected body of heater (1) dissipated heat and make body of heater (1) thus hull-skin temperature raise to improve body of heater (1) inner cavity chamber's temperature (can improve 10～20 ℃); Be closed in the preheating chamber (6) because of injector (3) on the other hand, combustion air is preheated during by preheating chamber (6) by air admission hole (7), can make about air at room temperature (general 20 ℃)) preheating rises to about 70～80 ℃, inject injector (3) when the high pressure fuel gas through nozzle (4) and enter the while in body of heater (1) furnace chamber, form negative pressuren zone at the inlet end of injector (3) and the attached air inlet duct place that helps of injector (3), make preheating combustion air in injector is brought body of heater (1) furnace chamber into, like this because the raising of temperature in the chamber that between body of heater (1) and pottery plate (2), forms, and the temperature that enters the combustion air in this chamber increases substantially, the molecular motion of interior combustion gas of chamber and combustion-supporting gas is quickened, and the two is mixed fully, temperature raises, thereby make fuel combustion more abundant effectively, reach energy-conservation purpose.

Accompanying drawing 1 is the book extract accompanying drawing as an illustration.

Claims

1, a kind of energy-saving infrared radiation type household gas utensils, comprise the nozzle assembly of forming by body of heater (1), pottery plate (2), injector (3), nozzle (4), it is characterized in that: also have the shell (5) that body of heater (1), injector (3) are closed, be formed with preheating chamber (6) between shell after the sealing (5) and the body of heater (1), and this sealing shell (5) bottom surface is provided with combustion air air admission hole (7).

2,, it is characterized in that the ratio of the volume of the volume of said body of heater (1) and preheating chamber (6) can be 1:5.5～1:6 by the described kitchen range of claim 1.

3, by the described kitchen range of claim 1, it is characterized in that the area of said pottery plate (2) and the ratio of shell (5) base area can be 1:4.

4,, it is characterized in that the hole area of the air admission hole (7) that said shell (5) bottom surface is provided with and the ratio of shell (5) base area can be 1:20～1:22 by claim 1 or 3 described kitchen range.

5,, it is characterized in that also having the attached air inlet duct (8) that helps at the conical surface position of said injector (3) by the described kitchen range of claim 1.