Three-purpose steam cabinet for electricity, fuel gas and steam

Abstract

The utility model relates to the technical field of steam cabinet equipment, in particular to an electricity, fuel gas and steam three-purpose steam cabinet which comprises a cabinet body, a cabinet door and a fuel gas burner, one side of the cabinet door is installed on the cabinet body in a hinged mode, the fuel gas burner is installed at the bottom of the cabinet body, a steam water tank is arranged at the bottom of the cabinet body, and the steam water tank is connected with the cabinet door. A plurality of steam outlets are formed in the steam water tank, the gas burner is connected with the steam water tank in a heat exchange mode, the gas burner is connected with a flue gas heat exchanger, the flue gas heat exchanger penetrates through the steam water tank, the outlet end of the flue gas heat exchanger is communicated with a flue gas pipe on the cabinet body, and the outlet end of the flue gas heat exchanger is connected with a gas outlet of the cabinet body. An electric heater is detachably arranged in the steam water tank, the steam water tank is communicated with a water inlet pipe, and the cabinet body is connected with a steam access pipe. The electricity, fuel gas and steam three-purpose steam cabinet can generate steam through diversified energy sources, is convenient to use and is not limited and influenced by the energy sources.

Description

Technical Field

[0001] The utility model relates to the technical field of steam cabinet equipment, in particular to a steam cabinet for use with electricity, gas and steam. Background Art

[0002] Many steam cabinets currently sold on the market use a single energy source, usually gas or electric. Electric rice steam cabinets cannot be used during power outages, which will cause great inconvenience and cause unnecessary losses to customers' production. Although gas-type rice steam cabinets can solve the inconvenience caused by power outages, the cost of gas-type rice steam cabinets is relatively high, and they are relatively sensitive to the price of gas. The usage scenarios are relatively fixed and can only be used when there is a gas pipeline or the gas tank must be carried with you. Therefore, they are easily affected by the use environment during use.

[0003] In view of such a situation, the patent with publication number CN107514622A discloses a steam engine that can generate steam using either biomass fuel, combustible gas or electricity, avoiding the trouble caused by the suspension of supply of a single energy source when using a single energy source. However, since it uses biomass as the combustion heat source, its combustion steam generator needs to adapt to both biomass and gas combustion heat sources at the same time, so it is relatively complex in structure and has high manufacturing cost.

[0004] For this reason, it is urgent to improve the rice steaming cabinet of the prior art so that it can realize diversified energy sources on the basis of low cost. Utility Model Content

[0005] In order to overcome one of the deficiencies of the prior art, the purpose of the utility model is to provide an electric, gas and steam three-purpose steamer, which can realize diversified energy to generate steam and is easy to use.

[0006] In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

[0007] A steam cabinet for electric, gas and steam use, comprising a cabinet body, a cabinet door and a gas burner, wherein one side of the cabinet door is hingedly mounted on the cabinet body, the gas burner is mounted on the bottom of the cabinet body, a steam water tank is arranged on the bottom of the cabinet body, a plurality of steam outlets are arranged on the steam water tank, the gas burner is connected to the steam water tank for heat exchange, a flue gas heat exchanger is connected to the gas burner, the flue gas heat exchanger passes through the steam water tank, the outlet end of the flue gas heat exchanger is connected to the flue gas pipe on the cabinet body, an electric heater is detachably arranged in the steam water tank, a water inlet pipe is connected to the steam water tank, and a steam access pipe is connected to the cabinet body.

[0008] Furthermore, the flue gas heat exchanger includes a plurality of heat exchange tubes, two mounting end plates and a plurality of fins arranged on the outer walls of the heat exchange tubes, the two mounting end plates are respectively connected to the outer walls of both ends of the plurality of heat exchange tubes, and the two mounting end plates are both covered with an air collecting hood on one side facing outward, any one of the air collecting hoods is connected to the exhaust end of the gas burner, and one end of the flue gas pipe is connected to the other air collecting hood.

[0009] Furthermore, the gas burner is located inside the steam water tank and a combustion chamber is arranged therein. The combustion chamber protrudes into the steam water tank. The combustion end of the gas burner is installed in the combustion chamber. The corresponding gas collecting hood is installed on the combustion chamber and is connected to the combustion chamber.

[0010] Furthermore, the steam water box is located on both sides of the corresponding area of ​​the combustion chamber to form a water storage area.

[0011] Furthermore, a mounting plate is provided on the air collecting hood connected to the flue gas pipe, and the mounting plate is installed on the side wall of the steam water tank. A flue gas connecting pipe is provided on the air collecting hood, and the flue gas connecting pipe passes through the steam water tank and is connected to the corresponding end of the flue gas pipe.

[0012] Furthermore, all the fin plates are arranged parallel to the length direction of the heat exchange tube and both ends are connected to the mounting end plates at both ends respectively.

[0013] Furthermore, a water tank is provided on the back or top of the cabinet, the smoke pipe passes through the water tank, the water tank is connected to the water inlet pipe, and an electromagnetic control valve is provided on the water inlet pipe.

[0014] Furthermore, a float liquid level switch is provided in the steam water tank, and the float liquid level switch is electrically connected to the electromagnetic control valve.

[0015] Furthermore, the steam water tank is connected with a drain pipe, the drain pipe passes through the water storage tank, and a switch valve is arranged on one end of the drain pipe.

[0016] Furthermore, a control panel is provided on the top of the cabinet, and a plurality of control switches and indicator lights are provided on the control panel.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model is an electric, gas and steam three-purpose steam cabinet, which is improved on the basis of the existing gas steam cabinet, and is designed with a steam water tank shared by electric heating and gas heating. The two energy systems are organically combined, which reduces the complexity of the entire steam generation structure in structure and greatly simplifies the structural design. At the same time, the gas burner and the flue gas heat exchanger are used to heat the water in the steam water tank, which can reduce the temperature of the flue gas and greatly improve the energy conversion rate of gas combustion. In addition, a steam access pipe is designed, which can be directly connected to an external steam generator in the absence of gas and electricity, and can also work normally. It is suitable for use in some environments without electricity and fire, and improves the convenience of use.

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0021] Figure 2 It is a top view of an embodiment of the utility model;

[0022] Figure 3 yes Figure 2 The cross-sectional view along the AA direction;

[0023] Figure 4 yes Figure 2 The cross-sectional view along the BB direction;

[0024] Figure 5 It is a cross-sectional view of the flue gas heat exchanger in the embodiment of the utility model.

[0025] Description of Figure Numbers:

[0026] Cabinet 10, steam water tank 11, steam outlet 12, flue gas pipe 13, water inlet pipe 14, steam access pipe 15, water storage tank 16, electromagnetic control valve 17, float liquid level switch 18, drain pipe 19, switch valve 1a, control panel 1b, cabinet door 20, gas burner 30, combustion chamber 31, flue gas heat exchanger 40, heat exchange tube 41, mounting end plate 42, fin plate 43, gas collecting hood 44, mounting plate 45, flue gas connecting pipe 46, electric heater 50 DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] Reference Figures 1 to 5The illustrated steam cabinet for electricity, gas and steam comprises a cabinet body 10, a cabinet door 20 and a gas burner 30, wherein one side of the cabinet door 20 is hingedly mounted on the cabinet body 10, and the gas burner 30 is mounted on the bottom of the cabinet body 10, and a steam water tank 11 is arranged on the bottom of the cabinet body 10, and a plurality of steam outlets 12 are arranged on the steam water tank 11, and the gas burner 30 is connected to the steam water tank 11 for heat exchange, and a flue gas heat exchanger 40 is connected to the gas burner 30, and the flue gas heat exchanger 40 passes through the steam water tank 11, and the outlet end of the flue gas heat exchanger 40 is connected to the flue gas pipe 13 on the cabinet body 10, and an electric heater 50 is detachably arranged in the steam water tank 11, and a water inlet pipe 14 is connected to the steam water tank 11, and a steam access pipe 15 is connected to the cabinet body 10. Among them, the overall structure of the flue gas heat exchanger 40 is U-shaped, which can increase the contact area and duration between it and the water in the steam water tank 11, thereby improving the heat exchange. In addition, the steam water tank 11 is actually a box structure with an upper opening arranged at the bottom of the cabinet 10, which divides the cabinet 10 into two upper and lower chambers, wherein the lower chamber is used to install the gas burner 30, and the upper chamber is used to hold water and steamers. It should be noted that the bottom of the steam water tank 11 is not a flat structure, wherein the area connected to the gas burner 30 is an upwardly protruding structure, so that water storage areas are formed on both sides of the area, which can increase the contact area with the outer wall of the gas burner 30 and improve the heat transfer rate.

[0029] In addition, the electric heater 50 can be installed on the side wall of the steam water tank 11, wherein the steam water tank 11 is composed of a metal plate and the side wall of the cabinet 10 to form the above-mentioned steam water tank 11, so it can be understood that the electric heater 50 is actually also installed on the side wall of the cabinet 10.

[0030] The electric, gas and steam three-purpose steam cabinet is improved on the basis of the existing gas steam cabinet, and a steam water tank 11 shared by electric heating and gas heating is designed. The two energy systems are organically combined, which reduces the complexity of the entire steam generation structure in structure and greatly simplifies the structural design. At the same time, the gas burner 30 and the flue gas heat exchanger 40 are used to heat the water in the steam water tank 11, which can reduce the temperature of the flue gas and greatly improve the energy conversion rate of gas combustion. In addition, a steam access pipe 15 is designed, which can be directly connected to an external steam generator in the absence of gas and electricity, and can also work normally, which is suitable for use in some environments without electricity and fire, and improves the convenience of use.

[0031] See also Figure 1 and Figure 2In order to facilitate water supply to the steam water tank 11, in one embodiment of the present application, a water tank 16 is provided on the back or top of the cabinet 10, and the flue gas pipe 13 passes through the water tank 16. The water tank 16 is connected to the water inlet pipe 14, and the water inlet pipe 14 is provided with an electromagnetic control valve 17. The flue gas pipe 13 passing through the water tank 16 can largely recycle the residual heat in the flue gas, thereby increasing the temperature of the water body entering the steam water tank 11 at a later time, reducing the heat required by the gas burner 30 or the electric heater 50 to heat the water body into steam, thereby reducing energy consumption.

[0032] In order to realize automatic water replenishment, in the above-mentioned improved embodiment, a float liquid level switch 18 is provided in the steam water tank 11 , and the float liquid level switch 18 is electrically connected to the electromagnetic control valve 17 .

[0033] Furthermore, in order to facilitate the cleaning of the steam water tank 11 and remove the sewage inside it, the steam water tank 11 is connected with a drain pipe 19, which passes through the water storage tank 16. A switch valve 1a is provided on one end of the drain pipe 19. The drain pipe 19 passes through the water storage tank 16, which can reduce the heat transferred to the water storage tank 16, avoid waste, and play a role in reducing energy consumption.

[0034] See also Figure 1 In one embodiment of the present application, in order to facilitate the control of the operation of the gas burner 30 or the electric heater 50, a control panel 1b is provided on the top of the cabinet 10, and a plurality of control switches and indicator lights are provided on the control panel 1b. Different control switches and indicator lights are connected to the gas burner 30 and the electric heater 50, respectively, so that the working states of the gas burner 30 and the electric heater 50 can be corresponded.

[0035] See also Figure 3 and Figure 4In order to improve the heat exchange effect between the flue gas and the water in the steam water tank 11 and reduce the exhaust temperature of the flue gas, the flue gas heat exchanger 40 includes a plurality of heat exchange tubes 41, two mounting end plates 42 and a plurality of fins 43 arranged on the outer wall of the heat exchange tubes 41. The two mounting end plates 42 are respectively connected to the outer walls of the two ends of the plurality of heat exchange tubes 41. The two mounting end plates 42 are both covered with a gas collecting hood 44 on one side facing outward. Any of the gas collecting hoods 44 is connected to the exhaust end of the gas burner 30, and one end of the flue gas pipe 13 is connected to the other gas collecting hood 44. The gas collecting hood 44 is mainly used to disperse the flue gas to different heat exchange tubes 41 or to receive the flue gas exhausted from different heat exchange tubes 41. At the same time, the other can form different shapes with the heat exchange tubes 41, so as to increase the heat exchange time between the flue gas heat exchanger 40 and the water in the steam water tank 11. In addition, the fins 43 can increase the heat exchange area between the heat exchange tubes 41 and the water in the steam water tank 11.

[0036] In the above-mentioned improved solution, in order to facilitate heat exchange, the gas burner 30 is located in the steam water box 11 and a combustion chamber 31 is arranged. The combustion chamber 31 protrudes into the steam water box 11. The combustion end of the gas burner 30 is installed in the combustion chamber 31. The corresponding gas collecting hood 44 is installed on the combustion chamber 31 and communicates with the combustion chamber 31. The middle part of the steam water box 11 is raised, which is convenient for forming the combustion chamber 31. At the same time, the five surfaces of the combustion chamber 31 are in contact with the water in the steam water box 11, thereby ensuring the effect of heat exchange.

[0037] In the improved scheme of the above embodiment, in order to avoid dry burning, the steam water tank 11 is located on both sides of the corresponding area of ​​the combustion chamber 31 to form a water storage area. The water in the water storage area can largely ensure that there are at least two surfaces in the area at the bottom of the steam water tank 11 for heat exchange, thereby avoiding the steam water tank 11 from dry burning and overheating. It should be noted that in the present application, the upper end of the steam water tank 11 is open, and a cover plate is sealed on it, and the steam outlet 12 is arranged on the cover plate. Such a setting is mainly to prevent large objects in the upper chamber from falling directly into the steam water tank 11, and the cover plate can be disassembled, which is convenient for later cleaning and maintenance.

[0038] See also Figure 4 and Figure 5In one embodiment, in order to facilitate the installation and fixing of the gas collecting hood 44 and the connection with the corresponding end of the smoke pipe 13, a mounting plate 45 is provided on the gas collecting hood 44 connected with the smoke pipe 13, and the mounting plate 45 is installed on the side wall of the steam water tank 11. A smoke connecting pipe 46 is provided on the gas collecting hood 44, and the smoke connecting pipe 46 passes through the steam water tank 11 and is connected with the corresponding end of the smoke pipe 13. The design of the smoke connecting pipe 46 enables the smoke pipe 13 to be quickly connected to the gas collecting hood 44, which is convenient for later replacement and maintenance.

[0039] In the above embodiment, in order to increase the strength of the entire heat exchange tube 41 and prevent the heat exchange tube 41 from being deformed and bent too much due to heat, all the fins 43 are arranged parallel to the length direction of the heat exchange tube 41 and both ends are respectively connected to the mounting end plates 42 at both ends. Of course, two adjacent fins 43 can be connected to each other, which is convenient for improving the stability of the entire heat exchange tube 41.

[0040] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A steam cabinet for electricity, gas and steam, comprising a cabinet body, a cabinet door and a gas burner, wherein one side of the cabinet door is hingedly mounted on the cabinet body, and the gas burner is mounted on the bottom of the cabinet body, characterized in that: A steam water tank is arranged on the bottom of the cabinet, a plurality of steam outlets are arranged on the steam water tank, the gas burner is connected to the steam water tank for heat exchange, a flue gas heat exchanger is connected to the gas burner, the flue gas heat exchanger passes through the steam water tank, the outlet end of the flue gas heat exchanger is connected to the flue gas pipe on the cabinet, an electric heater is detachably arranged in the steam water tank, a water inlet pipe is connected to the steam water tank, and a steam access pipe is connected to the cabinet.

2. The electric, gas and steam three-purpose steam cabinet according to claim 1, characterized in that: The flue gas heat exchanger includes a plurality of heat exchange tubes, two mounting end plates and a plurality of fins arranged on the outer walls of the heat exchange tubes. The two mounting end plates are respectively connected to the outer walls of both ends of the plurality of heat exchange tubes. The two mounting end plates are both covered with an air collecting hood on one side facing outward. Any one of the air collecting hoods is connected to the exhaust end of the gas burner, and one end of the flue gas pipe is connected to the other air collecting hood.

3. The electric, gas and steam three-purpose steam cabinet according to claim 2, characterized in that: The gas burner is located inside the steam water box and a combustion chamber is arranged therein. The combustion chamber protrudes into the steam water box. The combustion end of the gas burner is installed in the combustion chamber. The corresponding gas collecting hood is installed on the combustion chamber and communicated with the combustion chamber.

4. The electric, gas and steam three-purpose steam cabinet according to claim 3, characterized in that: The steam water boxes are located on both sides of the corresponding areas of the combustion chamber to form water storage areas.

5. The electric, gas and steam three-purpose steam cabinet according to claim 2, characterized in that: The gas collecting hood connected to the flue gas pipe is provided with a mounting plate, the mounting plate is mounted on the side wall of the steam water tank, and the gas collecting hood is provided with a flue gas connecting pipe, the flue gas connecting pipe passes through the steam water tank and is connected to the corresponding end of the flue gas pipe.

6. The electric, gas and steam three-purpose steam cabinet according to claim 2, characterized in that: All the fin plates are arranged parallel to the length direction of the heat exchange tube and both ends are connected to the mounting end plates at both ends respectively.

7. An electric, gas and steam three-purpose steam cabinet according to any one of claims 1 to 6, characterized in that: A water storage tank is arranged on the back or top of the cabinet, the smoke pipe runs through the water storage tank, the water storage tank is communicated with the water inlet pipe, and an electromagnetic control valve is arranged on the water inlet pipe.

8. The electric, gas and steam three-purpose steam cabinet according to claim 7, characterized in that: A float liquid level switch is arranged in the steam water tank, and the float liquid level switch is electrically connected to the electromagnetic control valve.

9. The electric, gas and steam three-purpose steam cabinet according to claim 7, characterized in that: The steam water tank is connected with a drain pipe, which passes through the water storage tank. A switch valve is arranged on one end of the drain pipe.

10. The electric, gas and steam three-purpose steam cabinet according to claim 1, characterized in that: A control panel is arranged on the top of the cabinet, and a plurality of control switches and indicator lights are arranged on the control panel.

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