CN215713205U

CN215713205U - Gas furnace and gas furnace system

Info

Publication number: CN215713205U
Application number: CN202122355180.3U
Authority: CN
Inventors: 付超; 张虎; 任志恒; 朱凯; 孔凡磊; 战斗
Original assignee: Zhongke Zhuoyi Environmental Technology Dongguan Co ltd; Songshan Lake Materials Laboratory
Current assignee: Zhongke Zhuoyi Environmental Technology Dongguan Co ltd; Songshan Lake Materials Laboratory
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-02-01
Anticipated expiration: 2031-09-27

Abstract

The application provides a gas furnace and gas furnace system relates to heating device technical field. A gas furnace comprises a furnace body, a plurality of supporting plates and a plurality of furnace doors, wherein the supporting plates and the furnace doors are arranged in the furnace body. The supporting plates divide a hearth in the furnace body into a plurality of independent combustion chambers, and each supporting plate is provided with a burner which is configured to uniformly heat materials in the combustion chambers. An oven door is provided to each combustion chamber for opening or closing the combustion chamber. The application provides a gas furnace has multilayer structure, and multilayer combustion chamber is independent each other, can carry out the thermal treatment process of different conditions to a plurality of panels simultaneously. Every layer of combustion chamber is equipped with the combustor, and this combustor heats the combustion chamber through the heat radiation, makes the temperature in the combustion chamber reach preset temperature, provides the high heating environment of temperature homogeneity. The gas heating speed is fast, and compared with the electric heating energy consumption is low, easy control.

Description

Gas furnace and gas furnace system

Technical Field

The application relates to the technical field of heating devices, in particular to a gas furnace and a gas furnace system.

Background

Resistance furnaces are used in the mechanical industry for pre-metal forging heating, metal heat treatment heating, brazing, powder metallurgy sintering, glass ceramic firing and annealing, low melting metal melting, drying of sand molds and paint film layers, and the like. The existing multilayer box type resistance furnace adopts a heating pipe for heating, the heating speed is low, the temperature is not uniform, the heating effect is poor, and the working efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a gas furnace and a gas furnace system so as to solve the technical problems of nonuniform temperature and high energy consumption of a box type resistance furnace.

In a first aspect, the embodiment of the present application provides a gas furnace, which includes a furnace body, a plurality of support plates disposed in the furnace body, and a plurality of furnace doors. The supporting plates divide a hearth in the furnace body into a plurality of independent combustion chambers, and each supporting plate is provided with a burner which is configured to uniformly heat materials in the combustion chambers. An oven door is provided to each combustion chamber for opening or closing the combustion chamber.

The application provides a gas furnace has multilayer structure, and multilayer combustion chamber is independent each other, can carry out the thermal treatment process of different conditions to a plurality of panels simultaneously. Every layer of combustion chamber is equipped with the combustor, and this combustor heats the combustion chamber through the heat radiation, makes the temperature in the combustion chamber reach preset temperature, provides the high heating environment of temperature homogeneity. The gas heating speed is fast, and compared with the electric heating energy consumption is low, easy control.

In a possible implementation manner, the burner comprises a body, a fiber board and a porous medium, wherein an air inlet cavity is arranged inside the body, the air inlet cavity is provided with an air inlet and an air outlet, and the fiber board and the porous medium are sequentially arranged at the air outlet.

If the gas is ignited only at the gas outlet, the temperature is not easy to control because the flame size is not easy to control. The gas outlet department in this application is equipped with fibreboard and porous medium in proper order. The fiber board is used for preventing backfire, flame burns in the porous medium, and the heat emitted by burning and trace smoke are radiated to the material to be processed above the burner so as to carry out heat treatment on the material. The heating mode of the heat radiation has better temperature uniformity, is favorable for the uniform heating of the material to be processed, and has better heat treatment effect.

In one possible implementation, the air inlet is disposed at a side end of the body, and the air outlet is disposed at a top of the body.

Because the material to be processed is placed above the combustor, in order to enable the combustion heat to act on the material to be processed better, the air inlet is arranged at the side end of the body, and the air outlet is arranged at the top of the body.

In a possible implementation manner, the cross sections of the body and the air inlet cavity are both of long strip-shaped structures.

Because it has multilayer combustion chamber to fire burning furnace, and the space of combustion chamber is the cuboid, in order to with the structure phase-match in the combustion chamber, the body is rectangular shape structure with the cross-section in chamber of admitting air.

In a possible implementation mode, two ends of the body are respectively provided with a fixing part, and the fixing parts are embedded into the side wall of the furnace body.

This structure makes the burning heating position of body directly to the combustion chamber heating, avoids the body directly to be connected with the lateral wall of furnace body and produces the heat transfer, influences the heating effect. Simultaneously, the body is internally provided with an air inlet cavity, so that the stability of the body is reduced, and unstable conditions are avoided.

In one possible implementation, the burner is provided with a plurality of supports for supporting the material. The supporting pieces are used for supporting the material to be processed, and the material to be processed is prevented from being directly contacted with the burner, so that the heating is not uniform.

In one possible implementation, a plurality of combustion chambers are arranged in a longitudinal direction to form a multi-layer structure. The structure is simple, and the plate is easy to place and take out.

In a possible realization mode, the bottom of the supporting plate is provided with a supporting beam, the supporting beam is fixed on the side wall of the body, and a gap is reserved between the supporting beam and the adjacent combustor.

Because the backup pad is the flat board, the face size is great, if only through backup pad itself and furnace body fixed connection, the unstable problem of fixing easily appears. In this embodiment, the bottom of the two ends of the supporting plate are respectively provided with a supporting beam. The support beam is fixed to the side wall of the body, and a gap is formed between the support beam and the adjacent combustor, so that the gap is convenient for maintenance or other operation of the combustor from the side.

In one possible implementation, the material of the supporting plate is a heat insulating material. The heat insulating material can reduce the heat transfer between two adjacent combustion chambers to a greater extent, and is favorable for improving the temperature maintenance and uniformity in the combustion chambers.

In a second aspect, there is provided a gas burner system comprising a gas burner as described above.

The beneficial effects of this application include at least:

the application provides a gas furnace has multilayer structure, and multilayer combustion chamber is independent each other, can carry out the thermal treatment process of different conditions to a plurality of panels simultaneously. Be equipped with the combustor in every combustion chamber, this combustor sets up fibreboard and porous ceramic medium in the gas outlet of body for the gas burns in porous ceramic medium when burning, and the heat radiation of burning and the micro-flue gas heat the combustion chamber, and the temperature in the messenger combustion chamber reaches preset temperature, provides the high heating environment of temperature homogeneity. The gas heating speed is fast, and compared with the electric heating energy consumption is low, easy control.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic structural diagram of a gas furnace provided by the embodiment of the application;

FIG. 2 is a schematic structural diagram of a combustor provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a combustor provided in an embodiment of the present application.

Icon: 100-gas furnace; 101-furnace body; 1011-a housing; 1013-furnace lining; 110-a combustion chamber; 111-a support plate; 112-a first support beam; 113-a second support beam; 115-furnace door; 120-a burner; 121-body; 123-fiberboard; 125-porous media; 126-a support; 127-an air intake chamber; 1271-air inlet; 1273-air outlet; 128-a first fixed part; 129-second fixing part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Most of the existing gas furnaces are provided with a furnace box for carrying out heat treatment on a large amount of processing materials. Generally, the same kind of materials need to be subjected to heat treatment under the same conditions, and flexible heat treatment under multiple conditions and multiple temperatures is not easy to realize. And the existing gas stove box has large volume and inconvenient operation.

The box-type resistance furnace has the characteristics of small volume, novel structure, convenient operation and flexible control. However, the resistance furnace adopts the resistance heating element, so that compared with gas heating, the heating speed is low, the temperature uniformity is poor, the energy consumption is high, the resistance furnace is not suitable for hot stamping forming of bare plates and aluminum alloy pieces, and the application range is limited.

Based on this, this application provides a multilayer gas furnace, through to the improvement of structure for this gas furnace has multilayer structure, can carry out heat treatment to the material under high temperature, medium temperature, low temperature condition. Good temperature uniformity, good heat treatment effect, low cost and wide application range. Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a gas furnace 100 provided in this embodiment, and fig. 2 is a schematic structural diagram of a combustion chamber 110 provided in this embodiment.

The present embodiment provides a gas furnace 100 for heat-treating a metal material. The gas furnace 100 includes a furnace body 101, a plurality of support plates 111 disposed inside the furnace body 101, and a plurality of furnace doors 115. The furnace body 101 used in the present application includes a housing 1011 and a lining 1013, and the lining 1013 is provided inside the housing 1011. The outer case 1011 serves to protect the furnace structure and maintain the sealing of the furnace body 101. The function of the furnace lining 1013 is to protect the furnace temperature and reduce the heat loss. The furnace lining 1013 is composed of a refractory material and a heat-insulating material, the heat-insulating material is an outer layer and is close to the outer shell 1011, and the refractory material is an inner layer. The refractory material can be a refractory layer built by high-alumina bricks, and the heat-insulating material can be light firewood soil bricks, diatomite powder, frog stone powder or fiber products and the like. The furnace body 101 adopted by the embodiment is a rectangular body, and the hearth is a rectangular body. This structure facilitates the layering thereof.

In order to increase the application range and processing efficiency of the gas furnace 100, in the present embodiment, the plurality of supporting plates 111 are used to divide the furnace chamber in the furnace body 101 into a plurality of independent combustion chambers 110, and the plurality of independent combustion chambers 110 can perform heat treatment on the material to be processed under different conditions. In some embodiments of the present application, the supporting plates 111 are flat plate structures, and each supporting plate 111 is horizontally disposed in the furnace body 101 to divide the furnace chamber into a plurality of layers of combustion chambers 110 arranged in the longitudinal direction. The gas burner 100 in this embodiment has five combustion chambers 110, each combustion chamber 110 being of the same size, in other embodiments of the present application the distance between the support plates 111 may be different to obtain combustion chambers 110 of different sizes.

The supporting plate 111 in the embodiment of the present application is a heat insulating material, which can greatly reduce the heat transfer between two adjacent combustion chambers 110, and is beneficial to improving the temperature maintenance and uniformity in the combustion chambers 110.

Because the backup pad 111 is the flat board, the face size is great, if only through backup pad 111 itself and furnace body 101 fixed connection, the unstable problem of fixing easily appears. In this embodiment, the bottom portions of both ends of the support plate 111 are provided with a first support beam 112 and a second support beam 113, respectively. The first support beam 112 and the second support beam 113 are respectively fixed to the side walls of the body 121, and the support plate 111 is firmly fixed to the first support beam 112 and the second support beam 113. Preferably, the supporting beam is made of a heat insulating material, so that the heat dissipation in the combustion chamber 110 can be reduced, and the temperature in the combustion chamber 110 can be ensured to a greater extent.

The conventional gas furnace 100 or resistance furnace has a furnace door 115, and since the present application has a plurality of combustion chambers 110, when heat treatment is performed under different conditions in each combustion chamber 110, one furnace door 115 is inconvenient to operate, which is not advantageous for performing heat treatment under different conditions. Each combustion chamber 110 in the embodiment of the present application is provided with an oven door 115 for opening or closing the combustion chamber 110. This structure allows each combustion chamber 110 to be independently controlled to independently perform heat treatment without mutual influence. The oven door 115 in the embodiment of the application has better sealing property and heat insulation property, and reduces heat loss. The oven door 115 in this embodiment may be made of cast iron or steel plate, and a safety limit switch is installed on the opening device of the oven door 115, so that an observation window may be provided on the oven door 115 in order to observe the heating condition in the combustion chamber 110.

A burner 120 is provided on each support plate 111, and the burner 120 is configured to uniformly heat the material placed in the combustion chamber 110. The existing burner 120 has limited combustion range, and the flame size is not easy to control, so that the local temperature is high, the temperature uniformity is poor, and the burner is not suitable for large-scale high-temperature heat treatment. The combustor 120 that this application adopted is different from current combustor 120, and the combustor 120 of this application can satisfy high temperature, medium temperature, microthermal thermal treatment, and the homogeneity is good. The high temperature can be above 1000 ℃, the medium temperature can be 600-1000 ℃, and the low temperature can be below 600 ℃.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a burner according to an embodiment of the present disclosure.

In some embodiments of the present application, the combustor 120 includes a body 121, a fiber sheet 123, and a porous medium 125. The interior of the body 121 has an inlet chamber 127, the inlet chamber 127 having an inlet 1271 and an outlet 1273. Gas enters the inlet chamber 127 through the inlet 1271 and is combusted at the outlet 1273. Since the material to be processed is placed above the burner 120, in order to make the heat of combustion better act on the material to be processed, the air inlet 1271 is disposed at the side end of the body 121, and the air outlet 1273 is disposed at the top of the body 121. The body 121 in this embodiment is made of refractory material.

If the gas is ignited only at the outlet 1273, the temperature is not easily controlled due to the difficulty in controlling the flame size. The outlet 1273 in this application is provided with a fiber plate 123 and a porous medium 125 in this order. The fiber plate 123 is used to prevent backfire, flame burning in the porous medium 125, and heat emitted from the burning and a minute amount of smoke are radiated to the material to be processed above the burner 120 to heat-treat the material. The heating mode of the heat radiation has better temperature uniformity, is favorable for the uniform heating of the material to be processed, and has better heat treatment effect.

In this embodiment, the fiber sheet 123 completely covers the outlet 1273 to completely cover and prevent the flame from the outlet 1273. The porous medium 125 is then disposed on the fiber sheet 123 and completely covers the fiber sheet 123. The thickness of the fiber sheet 123 and the thickness of the porous medium 125 are set according to actual needs, and are not limited in this application. The porous medium 125 used in the embodiment of the present application may be a porous ceramic material, or may be other materials having the same function.

Because the gas furnace 100 is provided with the plurality of layers of combustion chambers 110, the space of the combustion chambers 110 is a cuboid, in order to match with the structure in the combustion chambers 110, the burner 120 is a cuboid, and the sections of the body 121 and the air inlet cavity 127 of the burner 120 are both in a long strip structure. In other embodiments of the present application, the cross-sections of the body 121 and the intake cavity 127 may have a bent structure, and the specific structure is adjusted according to the structure of the combustion chamber 110.

In order to achieve uniform heating of the plate, a plurality of burners 120 are uniformly disposed on the support plate 111. In this embodiment, the body 121 is a rectangular body, the plurality of burners 120 are symmetrically disposed left and right, and the two side-by-side burners 120 are disposed adjacently, that is, there is no gap between the two side-by-side burners 120, so that the heating range of the burners 120 covers the whole combustion chamber 110. Optionally, 6-8 burners 120 are mounted on each support plate 111.

Referring to fig. 2, the main body 121 has a first fixing portion 128 and a second fixing portion 129 at two ends thereof, and the first fixing portion 128 and the second fixing portion 129 are embedded in the sidewall of the furnace body 101 to fix the main body 121. This structure makes the burning heating position of body 121 directly heat combustion chamber 110, avoids body 121 directly to be connected with the lateral wall of furnace body 101 and produces the heat transfer, influences the heating effect. Meanwhile, the body 121 is internally provided with the air inlet cavity 127, so that the stability of the body 121 is reduced, and unstable conditions are avoided.

The first and second support beams 112 and 113 are located above the first and second fixing

portions

128 and 129, respectively. In the present embodiment, there is a gap between the first and second support beams 112 and 113 and the first and second fixing

portions

128 and 129, i.e. there is a gap between the support beam and the adjacent burner 120. The gap facilitates maintenance or other operations of the combustor 120 by workers from the side of the combustion chamber 110. Further, the first support beam 112 and the second support beam 113 are respectively located right above the first fixing portion 128 and the second fixing portion 129, and the body 121 of the burner 120 corresponds to the support plate 111 between the first support beam 112 and the second support beam 113, that is, the projection of the support plate 111 between the first support beam 112 and the second support beam 113 on the burner 120 completely coincides with the burner 120. This structure allows the heating range of the burner 120 to be matched with the space inside the combustion chamber 110, and does not waste the heat emitted from the burner 120.

In other embodiments of the present application, the first support beam 112 and the second support beam 113 may be disposed at the first fixing portion 128 and the second fixing portion 129, such that the first support beam 112, the support plate 111, the second support beam 113 and the burner 120 are surrounded.

The plurality of supporting members 126 are disposed on the burner 120 to prevent the material to be processed from directly contacting the burner 120, which may result in uneven heating. The plurality of supports 126 are used to support the material to be processed. In this embodiment, the plurality of supporting members 126 are arranged in a matrix. The supporting member 126 is made of a heat insulating material, so that heat transfer generated on the contact surface between the supporting member 126 and the material to be processed is avoided, and the material to be processed is heated unevenly.

In this embodiment, the supporting member 126 is a cylindrical body, the bottom end of the supporting member 126 is fixedly connected to the porous medium 125, and the supporting member 126 is tapered from the bottom end to the top end. The bottom end of the supporting member 126 is provided with a certain size so as to ensure the fixing stability, the top end is smaller so as to reduce the contact area between the supporting member 126 and the material to be processed, the covering area of the supporting member 126 on the material to be processed is reduced, the exposure of the surface of the material to be processed is ensured to a greater extent, and the heating uniformity is ensured.

The working principle is as follows: the door 115 of the combustion chamber 110 is opened, and the material to be processed, such as a bare plate member, an al-si coated plate member, or an al alloy plate member, is placed on the supporter 126 of the supporting plate 111, and the door 115 is closed. Gas is input into the gas inlet 1271 of the burner 120, the gas is ignited after the gas inlet cavity 127 is filled with the gas, the gas quantity is controlled so that the combustion heat radiation of the gas reaches a certain temperature, and the material to be processed is subjected to heat treatment. After the heat treatment is completed, the burner 120 is closed, and when the temperature is reduced to a certain temperature, the oven door 115 is opened, and the heat-treated workpiece is taken out. If a plurality of different materials need to be heat-treated simultaneously, the materials to be processed are put into different combustion chambers 110, and the temperature conditions of the different combustion chambers 110 are controlled respectively.

The gas furnace 100 provided by the application has a multilayer structure, and the multilayer combustion chambers 110 are mutually independent, so that the heat treatment process under different conditions can be simultaneously carried out on a plurality of plates. Each combustion chamber 110 is provided with a burner 120, the burner 120 is provided with a fiber board 123 and a porous ceramic medium at an air outlet 1273 of the body 121, so that fuel gas is combusted in the porous ceramic medium during combustion, the combustion heat radiation and trace amount of flue gas heat the combustion chamber 110, the temperature in the combustion chamber 110 reaches a preset temperature, and a heating environment with high temperature uniformity is provided. The gas heating speed is fast, and compared with the electric heating energy consumption is low, easy control.

The application also provides a gas furnace system, including gas furnace 100 and control system (MCU controller), this control system and combustor 120 electric connection control the air input of combustor 120, parameters such as burning time. The control system further includes a plurality of temperature control modules, and the operating parameters of the combustor 120 are adjusted by measuring the temperatures measured by the temperature control modules. The control system in the embodiment of the present application is a general device in the technical field, and the present application does not limit the control system.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A gas furnace is characterized by comprising a furnace body, a plurality of supporting plates and a plurality of furnace doors, wherein the supporting plates and the furnace doors are arranged in the furnace body;

the supporting plates divide a hearth in the furnace body into a plurality of independent combustion chambers, and each supporting plate is provided with a burner which is configured to uniformly heat materials placed in the combustion chambers;

the furnace door is arranged in each combustion chamber and used for opening or closing the combustion chamber.

2. The gas furnace according to claim 1, wherein the burner comprises a body, a fiber plate and a porous medium, the body is internally provided with a gas inlet cavity, the gas inlet cavity is provided with a gas inlet and a gas outlet, and the fiber plate and the porous medium are sequentially arranged at the gas outlet along the gas outlet direction of the gas.

3. The gas burner of claim 2 wherein the gas inlet is provided at a side end of the body and the gas outlet is provided at a top of the body.

4. The gas burner of claim 2 wherein the cross-section of the body and the gas inlet chamber are both elongated structures.

5. The gas burner according to claim 2, wherein both ends of said body are respectively provided with a fixing portion, said fixing portion being embedded in a side wall of said burner body.

6. A gas burner according to any one of claims 1 to 5 wherein a plurality of support members are provided on the burner for supporting material.

7. A gas burner according to any one of claims 1 to 5 wherein a plurality of said burner chambers are arranged longitudinally to form a multi-layered structure.

8. A gas burner according to any one of claims 2 to 5 wherein the bottom of the support plate is provided with support beams for supporting the support plate, the support beams being secured to the side walls of the body with a gap between the support beams and the adjacent burner.

9. A gas burner according to any one of claims 1 to 5 wherein the support plate is of a thermally insulating material.

10. A gas burner system comprising a gas burner according to any one of claims 1 to 9.