Exhaust system capable of preventing steam from overflowing and steaming oven comprising same

Abstract

The utility model discloses an exhaust system capable of preventing steam from overflowing and a steaming oven comprising the same, the exhaust system comprises an exhaust valve, a flexible check valve and an exhaust pipe, the exhaust valve is used for being connected with the steaming oven to exhaust the steam, the exhaust pipe is connected with the exhaust valve to form a first exhaust channel, and the flexible check valve is connected with the exhaust pipe to form a second exhaust channel. The flexible check valve is arranged in the first exhaust channel, and the flexible end of the flexible check valve is closer to the air outlet end of the exhaust pipe than the air inlet end of the flexible check valve. The flexible check valve is in a closed state in a natural state, at the moment, the first exhaust channel is in a closed state, when the pressure in the steaming oven reaches the preset pressure, the air outlet end of the flexible check valve can be automatically deformed and opened, so that the first exhaust channel is opened, hot steam in the steaming oven can be prevented from overflowing outwards all the time, and the safety of the steaming oven is improved. The steam water consumption is reduced, external air can be prevented from entering the steaming oven through the exhaust pipe, the steam temperature and pressure in the steaming oven can be effectively maintained, and the cooking efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam ovens, and in particular to an exhaust system capable of preventing steam from overflowing and a steam oven containing the exhaust system. Background Art

[0002] The current steam oven products, the cavity and the outside are connected through the air duct. During the cooking process, steam will continuously overflow from the air duct into the air, resulting in steam loss, which in turn causes the temperature to drop. In order to cook effectively, the steam generator needs to work continuously to replenish the temperature and steam. This working mode will consume a lot of electricity. A relatively closed steam system is needed to minimize the discharge of steam to achieve relative sealing, slow down the speed of steam overflow, improve steam utilization, reduce the working time of the steam generator, save electricity, and reduce the amount of steam. The water output of the water tank can also be reduced by reducing the amount of water, reducing costs. Utility Model Content

[0003] The utility model aims to provide an exhaust system capable of preventing steam from overflowing and a steam oven containing the same, so as to solve the technical problem in the prior art that steam in the steam oven continuously overflows from the air duct into the air, resulting in steam loss, lowering of the temperature inside the steam oven, and thus affecting the steaming efficiency.

[0004] The utility model provides an exhaust system capable of preventing steam from overflowing, comprising an exhaust valve, a flexible check valve and an exhaust pipe, wherein the exhaust valve is used to be connected to a steam oven to exhaust the steam oven, the exhaust pipe is connected to the exhaust valve to form a first exhaust channel, the flexible check valve is arranged in the first exhaust channel, and the flexible end of the flexible check valve is closer to the outlet end of the exhaust pipe than the air inlet end of the flexible check valve.

[0005] In the exhaust system capable of preventing steam from overflowing as described above, the exhaust valve is provided with an exhaust nozzle, the exhaust nozzle is provided with a first connecting portion, and the exhaust pipe is plugged into the first connecting portion to form the first exhaust channel.

[0006] As described above, in the exhaust system capable of preventing steam from overflowing, the exhaust nozzle is further provided with a second connecting portion, the flexible check valve is plugged into the second connecting portion, and the flexible check valve is located inside the exhaust pipe.

[0007] As described above, in the exhaust system capable of preventing steam from overflowing, the second connection part is arranged on the top wall of the first connection part, the upper end of the first connection part has a first guide structure that gradually increases from top to bottom, and the upper end of the second connection part has a second guide structure that gradually increases from top to bottom.

[0008] In the exhaust system capable of preventing steam from overflowing as described above, the flexible check valve includes a third connecting portion and an elastic deformation portion, the third connecting portion is connected to the elastic deformation portion, and the third connecting portion is plugged into the second connecting portion.

[0009] In the exhaust system capable of preventing steam from overflowing as described above, the flexible check valve is a duckbill valve.

[0010] The utility model also provides a steam oven, comprising a box body, a shell assembly and the exhaust system capable of preventing steam from overflowing as described above, wherein the box body is formed with a cooking cavity and an exhaust hole connected to the cooking cavity, the exhaust valve is arranged on the outer wall of the box body and covers the exhaust hole, the exhaust valve is connected to the exhaust hole, the shell assembly is wrapped around the outer wall of the box body and forms a gap, and the exhaust system is arranged in the gap.

[0011] As described above, the steam oven comprises an evaporator assembly, the box body is provided with an air inlet hole communicating with the cooking cavity, and the evaporator assembly is communicated with the air inlet hole.

[0012] In the steam oven as described above, the evaporator assembly includes an evaporator and a steam conduit, one end of the steam conduit is communicated with the evaporator, and the other end of the steam conduit is communicated with the air inlet.

[0013] As described above, the steam oven includes a water tank, a water pump, a first water pumping pipe and a second water pumping pipe, the water tank is arranged outside the box body, the water pump is arranged on the outer wall of the box body, one end of the first water pumping pipe is connected to the water outlet end of the water tank, the other end of the first water pumping pipe is connected to the water inlet end of the water pump, one end of the second water pumping pipe is connected to the water outlet end of the water pump, and the other end of the second water pumping pipe is connected to the evaporator.

[0014] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0015] In the utility model, an exhaust valve, a flexible check valve and an exhaust pipe are provided. The exhaust valve is used to be connected to a steam oven for exhausting the steam oven. The exhaust pipe is connected to the exhaust valve to form a first exhaust channel. The flexible check valve is provided in the first exhaust channel. The flexible end of the flexible check valve is closer to the exhaust end of the exhaust pipe than the air inlet end of the flexible check valve. The first exhaust channel is closed or opened by the flexible check valve. The air outlet end of the flexible check valve is a deformable structure, which can open the first exhaust channel by deformation. In a natural state, the flexible check valve is in a closed state, and the first exhaust channel is in a closed state at this time. When the pressure inside the steam oven reaches a preset pressure, the air outlet end of the flexible check valve will automatically deform and open, thereby opening the first exhaust channel, which can prevent the hot steam inside the steam oven from constantly overflowing, reduce the steam water consumption, and also block the external air from entering the steam oven through the exhaust pipe, which can effectively maintain the steam temperature and pressure inside the steam oven and improve the cooking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is an exploded view of an exhaust system according to an exemplary embodiment;

[0018] Figure 2 is an exploded view of the internal structure of a steam oven according to an exemplary embodiment;

[0019] Figure 3 is a schematic diagram of the structure inside a steam oven according to an exemplary embodiment;

[0020] Figure 4 is an exploded view of a steam oven according to an exemplary embodiment.

[0021] Among them: 1. exhaust valve; 11. exhaust nozzle; 111. first exhaust port; 112. first connecting part; 113. second connecting part; 2. flexible check valve; 21. third connecting part; 22. elastic deformation part; 3. exhaust pipe; 4. exhaust window; 41. grid window; 5. box body; 51. exhaust hole; 52. steam valve; 6. shell assembly; 7. evaporator assembly; 71. evaporator; 72. steam duct; 8. water pump; 9. first water pumping pipe; 10. second water pumping pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] See also Figure 1The utility model provides an exhaust system capable of preventing steam from overflowing, comprising an exhaust valve 1, a flexible check valve 2 and an exhaust pipe 3. The exhaust valve 1 is used to be connected to a steam oven for exhausting the steam oven. The exhaust pipe 3 is connected to the exhaust valve 1 to form a first exhaust channel. The flexible check valve 2 is arranged in the first exhaust channel. The flexible end of the flexible check valve 2 is closer to the exhaust end of the exhaust pipe 3 than the air inlet end of the flexible check valve 2. The first exhaust channel is closed or opened by the flexible check valve 2. The air outlet end of the flexible check valve 2 is a deformable structure, which can open the first exhaust channel by deformation. In a natural state, the flexible check valve 2 is in a closed state, and the first exhaust channel is in a closed state at this time. When the pressure inside the steam oven reaches a preset pressure, the air outlet end of the flexible check valve 2 will automatically deform and open, thereby opening the first exhaust channel, which can prevent the hot steam inside the steam oven from overflowing all the time, reduce the steam water consumption, and also prevent the external air from entering the steam oven through the exhaust pipe 3, which can effectively maintain the steam temperature and pressure inside the steam oven and improve the cooking efficiency. Specifically, the flexible check valve 2 is a duckbill valve.

[0028] Furthermore, the exhaust valve 1 is provided with an exhaust nozzle 11 , the exhaust nozzle 11 is provided with a first connecting portion 112 , the exhaust pipe 3 is plugged into the first connecting portion 112 to form a first exhaust channel, and the air inlet end of the flexible check valve 2 is also connected to the exhaust nozzle 11 .

[0029] Furthermore, the exhaust nozzle 11 is provided with a second connection portion 113, the flexible check valve 2 is plugged into the second connection portion 113, and the flexible check valve 2 is located inside the exhaust pipe 3. The flexible check valve 2 is connected to the exhaust nozzle 11, so that the flexible check valve 2 can be fixed inside the first exhaust channel to control the closing or opening of the first exhaust channel.

[0030] Furthermore, the second connection part 113 is arranged on the top wall of the first connection part 112, the upper end of the first connection part 112 has a first guide structure that gradually increases from top to bottom, and the upper end of the second connection part 113 has a second guide structure that gradually increases from top to bottom. The lower ends of the first connection part 112 and the second connection part 113 are both cylindrical structures, the diameter of the first connection part 112 is larger than the diameter of the second connection part 113, the diameter of the bottom of the first guide structure is equal to the diameter of the lower end of the first connection part 112, and the diameter of the bottom of the second guide structure is equal to the diameter of the lower end of the second connection part 113, so that the plug-in of the exhaust pipe 3 and the flexible check valve 2 is more convenient.

[0031] Furthermore, the exhaust nozzle 11 is provided with a first exhaust port 111, which is connected to the inner cavity of the exhaust valve 1, the flexible check valve 2 is provided with a first air inlet and a second air outlet, and the exhaust pipe 3 is provided with a second air inlet and a third air outlet, the first air inlet is connected to the second air outlet, the second air inlet is connected to the third air outlet, and the second air inlet is connected to the second air outlet.

[0032] As described above, in the exhaust system capable of preventing steam from overflowing, the flexible check valve 2 includes a third connection portion 21 and an elastic deformation portion 22, the third connection portion 21 is connected to the elastic deformation portion 22, the third connection portion 21 is plugged into the second connection portion 113, the first air inlet is arranged on the third connection portion 21, the second air outlet is arranged on the elastic deformation portion 22, and the elastic deformation portion 22 is used to elastically deform to open or close the second air outlet. The third connection portion 21 has a certain hardness, and it can be firmly connected to the exhaust nozzle 11, and the third connection portion 21 is sealed with the first exhaust port 111, and the steam in the exhaust valve 1 can only be discharged through the flexible check valve 2. In a natural state, the elastic deformation portion 22 closes the second air outlet, which can prevent the hot steam inside the steam oven from overflowing all the time, and can also block the external air from entering the steam oven. When the pressure inside the steam oven reaches the preset pressure, the elastic deformation portion 22 is deformed under the impact of the airflow to open the second air outlet to achieve exhaust.

[0033] Furthermore, the exhaust system further includes an exhaust window 4, on which a third air inlet and a grille window 41 are provided, the exhaust window 4 is connected to the exhaust pipe 3, the third air inlet is communicated with the third air outlet, and the grille window 41 is communicated with the third air inlet. After the steam enters the flexible check valve 2 from the exhaust nozzle 11, the flexible check valve 2 is elastically deformed to open the second air outlet, so that the steam enters the exhaust pipe 3 and is finally discharged from the exhaust window 4.

[0034] Furthermore, when the exhaust pipe 3 is connected to the exhaust valve 1, the exhaust pipe 3 is sleeved on the outer wall of the exhaust nozzle 11, and the flexible check valve 2 is placed inside the exhaust pipe 3. The exhaust pipe 3 is sealed with the exhaust nozzle 11, and after the steam enters the flexible check valve 2 from the exhaust nozzle 11, the flexible check valve 2 is elastically deformed to open the second air outlet, so that the steam enters the exhaust pipe 3.

[0035] In some other embodiments, the exhaust pipe 3 is connected to the flexible check valve 2 , and the exhaust pipe 3 is sleeved on the outer wall of the third connecting portion 21 .

[0036] See also Figure 2-Figure 4The utility model also provides a steam oven, which includes a box body 5, a shell assembly 6 and an exhaust system as described above that can prevent steam from overflowing. The box body 5 is formed with a cooking cavity and an exhaust hole 51 connected to the cooking cavity. The exhaust valve 1 is arranged on the outer wall of the box body 5 and covers the exhaust hole 51. The exhaust valve 1 is connected to the exhaust hole 51. The shell assembly 6 is wrapped around the outer wall of the box body 5 to form a gap, and the exhaust system is arranged in the gap.

[0037] Specifically, the shell assembly 6 includes a bottom shell, a rear shell and an arched shell, which together form a accommodating cavity with an opening on the front wall. The box body 5 and the exhaust system are both arranged in the accommodating cavity. The front side of the box body 5 is rotatably connected to a furnace door assembly, which can be rotated to open or open the cooking cavity. A waste water box for collecting waste water is also provided under the furnace door assembly.

[0038] Specifically, the exhaust hole 51 is arranged in a mesh shape, so as to slow down the exhaust speed of steam and ensure the smooth exhaust of steam. The exhaust hole 51 is covered by the exhaust valve 1, so that the steam discharged from the mesh-shaped exhaust hole 51 is collected and then concentratedly introduced into the flexible check valve 2. When the steam pressure in the cooking cavity is greater than the pressure that the flexible check valve 2 can withstand, the elastic deformation part 22 on the flexible check valve 2 is elastically deformed, so that the second air outlet is opened, and the steam in the flexible check valve 2 enters the exhaust pipe 3 from the second air outlet, and then is guided to the exhaust window 4 by the exhaust pipe 3, and finally discharged from the steam oven from the exhaust window 4.

[0039] Furthermore, the steam oven includes an evaporator assembly 7, an air inlet hole communicating with the cooking cavity is provided on the box body 5, and the evaporator assembly 7 is communicated with the air inlet hole.

[0040] Furthermore, the evaporator assembly 7 includes an evaporator 71 and a steam conduit 72, one end of the steam conduit 72 is connected to the evaporator 71, and the other end of the steam conduit 72 is connected to the air inlet. The evaporator 71 is connected to the air inlet through the steam conduit 72, so that the steam generated by the evaporator 71 is introduced into the cooking cavity, providing the steam required for cooking for the steam oven.

[0041] Furthermore, the steam oven includes a water tank, a water pump 8, a first water pumping pipe 9 and a second water pumping pipe 10. The water tank is arranged outside the box body 5, the water pump 8 is arranged on the outer wall of the box body 5, one end of the first water pumping pipe 9 is connected to the water outlet of the water tank, the other end of the first water pumping pipe 9 is connected to the water inlet of the water pump 8, one end of the second water pumping pipe 10 is connected to the water outlet of the water pump 8, and the other end of the second water pumping pipe 10 is connected to the evaporator 71. Specifically, when the evaporator assembly 7 lacks water, the water pump 8 is started to pump out the water in the water tank, and the water enters the evaporator assembly 7 after passing through the first water pumping pipe 9, the water pump 8 and the second water pumping pipe 10 in sequence, so as to supply water to the evaporator assembly 7.

[0042] Furthermore, the steam oven further comprises a steam valve 52, which is arranged on the outer wall of the box body 5 and covers the air inlet hole, and the steam valve 52 connects the evaporator assembly 7 and the air inlet hole.

[0043] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model.

Claims

1. An exhaust system capable of preventing steam from escaping, characterized in that: The invention comprises an exhaust valve (1), a flexible check valve (2) and an exhaust pipe (3), wherein the exhaust valve (1) is used to be connected to a steam oven to exhaust the steam oven, the exhaust pipe (3) is connected to the exhaust valve (1) to form a first exhaust channel, the flexible check valve (2) is arranged in the first exhaust channel, and the flexible end of the flexible check valve (2) is closer to the exhaust end of the exhaust pipe (3) than the air inlet end of the flexible check valve (2).

2. The exhaust system capable of preventing steam from escaping according to claim 1, characterized in that: The exhaust valve (1) is provided with an exhaust nozzle (11), the exhaust nozzle (11) is provided with a first connecting portion (112), and the exhaust pipe (3) is plugged into the first connecting portion (112) to form the first exhaust channel.

3. The exhaust system capable of preventing steam from escaping according to claim 2, characterized in that: The exhaust nozzle (11) is also provided with a second connecting portion (113), the flexible check valve (2) is plugged into the second connecting portion (113), and the flexible check valve (2) is located inside the exhaust pipe (3).

4. The exhaust system capable of preventing steam from escaping according to claim 3, characterized in that: The second connecting portion (113) is arranged on the top wall of the first connecting portion (112), the upper end of the first connecting portion (112) has a first guiding structure that gradually increases from top to bottom, and the upper end of the second connecting portion (113) has a second guiding structure that gradually increases from top to bottom.

5. The exhaust system capable of preventing steam from escaping according to claim 4, characterized in that: The flexible check valve (2) comprises a third connecting portion (21) and an elastic deformation portion (22), wherein the third connecting portion (21) is connected to the elastic deformation portion (22), and the third connecting portion (21) is plugged into the second connecting portion.

6. The exhaust system capable of preventing steam from escaping according to any one of claims 1 to 5, characterized in that: The flexible check valve (2) is a duckbill valve.

7. A steam oven, characterized in that: The invention comprises a box body (5), a shell assembly (6), and an exhaust system capable of preventing steam from escaping as claimed in any one of claims 1 to 6, wherein the box body (5) is formed with a cooking cavity and an exhaust hole (51) connected to the cooking cavity, the exhaust valve (1) is arranged on the outer wall of the box body (5) and covers the exhaust hole (51), the exhaust valve (1) is connected to the exhaust hole (51), the shell assembly (6) is wrapped around the outer wall of the box body (5) and forms a gap, and the exhaust system is arranged in the gap.

8. The steam oven according to claim 7, characterized in that: The steam oven comprises an evaporator assembly (7); an air inlet hole communicating with the cooking cavity is provided on the box body (5); and the evaporator assembly (7) is communicated with the air inlet hole.

9. The steam oven according to claim 8, characterized in that: The evaporator assembly (7) comprises an evaporator (71) and a steam conduit (72); one end of the steam conduit (72) is in communication with the evaporator (71), and the other end of the steam conduit (72) is in communication with the air inlet hole.

10. The steam oven according to claim 9, characterized in that: The steam oven comprises a water tank, a water pump (8), a first water pumping pipe (9) and a second water pumping pipe (10); the water tank is arranged outside the box body (5); the water pump (8) is arranged on the outer wall of the box body (5); one end of the first water pumping pipe (9) is connected to the water outlet end of the water tank; the other end of the first water pumping pipe (9) is connected to the water inlet end of the water pump (8); one end of the second water pumping pipe (10) is connected to the water outlet end of the water pump (8); and the other end of the second water pumping pipe (10) is connected to the evaporator (71).

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