A steam oven

Abstract

This utility model discloses a steam boiler, including a casing, a gas assembly, and a flue gas assembly. The casing has a receiving cavity, and at least a portion of its outer wall has an air intake hole communicating with the receiving cavity. The casing also has a flue gas outlet. The gas assembly is disposed within the casing and located within the receiving cavity. The gas assembly includes a combustion shell, a burner, and a combustion heat exchanger. The combustion shell forms a combustion chamber, which communicates with the receiving cavity. The burner is disposed within the combustion shell, and the combustion heat exchanger is disposed within the combustion shell and located within the combustion chamber. The flue gas assembly is disposed within the combustion shell and is used to generate airflow from the combustion chamber to the flue gas outlet.

Description

Technical Field

[0001] This utility model relates to gas-fired boilers, and more particularly to a steam boiler. Background Technology

[0002] Some existing gas-fired steam boilers include a casing, gas components, and exhaust systems. The casing has a containment cavity, where the gas components are located. The gas components include a combustion shell, a combustion heat exchanger, and a burner. The combustion shell forms the combustion chamber, and the combustion heat exchanger is located within the combustion chamber. During operation, the gas burns at the burner, heating the medium inside the combustion heat exchanger. The flue gas in the combustion chamber is drawn in by the exhaust system and discharged to the outside through exhaust vents, creating a negative pressure within the combustion chamber. Air from the casing can then be added to the combustion chamber to facilitate combustion. Currently, the casing of steam boilers tends to overheat during operation, and this heat is difficult to utilize. Furthermore, a hot casing also poses a safety hazard. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a steam furnace capable of recovering and utilizing the heat from the chassis, improving the chassis's heat dissipation effect, and reducing the chassis temperature during operation.

[0004] A steam boiler according to an embodiment of the present invention includes a casing, a gas supply assembly, and a flue gas exhaust assembly. The casing has a receiving cavity, and at least a portion of the outer wall of the casing has an air intake hole communicating with the receiving cavity. The casing also has a flue gas exhaust hole. The gas supply assembly is disposed in the casing and located within the receiving cavity. The gas supply assembly includes a combustion shell, a burner, and a combustion heat exchanger. The combustion shell forms a combustion chamber, which communicates with the receiving cavity. The burner is disposed in the combustion shell, and the combustion heat exchanger is disposed in the combustion shell and located within the combustion chamber. The flue gas exhaust assembly is disposed in the combustion shell and is used to generate airflow from the combustion chamber to the flue gas exhaust hole.

[0005] The steam furnace according to the embodiments of this utility model has at least the following beneficial effects: When the steam furnace is working, the gas is burned at the burner to heat the medium in the combustion heat exchanger. The flue gas exhaust component draws the flue gas in the combustion chamber and discharges it through the flue gas exhaust hole, which creates a negative pressure in the combustion chamber. Since the housing cavity of the machine box is connected to the combustion chamber, the air in the housing cavity is drawn into the combustion chamber. The air outside the machine box is also drawn into the housing cavity of the machine box through the air intake hole under the action of air pressure. At this time, the air flowing through the air intake hole recovers the heat of the machine box, achieves the air preheating effect, and reduces the temperature of the machine box, thereby improving the heat dissipation effect of the machine box.

[0006] According to some embodiments of the present invention, a condensing assembly is also included. The condensing assembly is disposed in the chassis and located in the accommodating cavity. The condensing assembly includes a condensing shell and a condensing heat exchanger. The condensing shell forms a condensing chamber. The condensing chamber is connected to the combustion chamber through the exhaust assembly and is connected to the exhaust port. The condensing heat exchanger is disposed in the condensing shell and located in the condensing chamber, and is connected to the combustion heat exchanger.

[0007] According to some embodiments of the present invention, the combustion shell is located to the left of the condensation shell, and the combustion shell and the condensation shell are arranged side by side. The left and right walls of the chassis are provided with the air intake holes, and the number of air intake holes on the left wall is greater than that on the right wall.

[0008] According to some embodiments of the present invention, the air intake holes on the left side wall are all located at the upper part of the left side wall, and the air intake holes on the right side wall are all located at the upper part of the right side wall.

[0009] According to some embodiments of the present invention, the top wall of the chassis is provided with the air intake holes, and the number of air intake holes on the left side of the top wall is greater than the number of air intake holes on the right side of the top wall.

[0010] According to some embodiments of the present invention, the exhaust assembly is connected to the upper end of the combustion chamber, the burner is located in the lower part of the combustion chamber, the exhaust assembly is connected to one side of the condensation chamber in the horizontal direction, and the upper end of the condensation chamber is connected to the exhaust port.

[0011] According to some embodiments of the present invention, the lower part of the combustion chamber is connected to the lower part of the accommodating cavity, a first air curtain channel is formed between the combustion shell and the side wall of the chassis, and a second air curtain channel is formed between the condensation shell and the side wall of the chassis.

[0012] According to some embodiments of the present invention, a partition is also included. The partition is disposed in the chassis and located in the accommodating cavity. The partition is located between the combustion shell and the side wall of the chassis. An air supply channel is formed between the partition and the combustion shell. An air inlet is provided at the upper end of the air supply channel, and the lower end of the air supply channel communicates with the combustion chamber.

[0013] According to some embodiments of the present invention, the chassis is evenly provided with a plurality of air intake holes around the exhaust hole.

[0014] According to some embodiments of the present invention, the top wall and side wall of the chassis are provided with the air intake holes, the air intake holes located on the top wall are round holes, and the air intake holes located on the side walls are louvered holes.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a perspective view of the steam furnace according to an embodiment of the present utility model;

[0018] Figure 2 This is a perspective view of the steam furnace in another direction according to an embodiment of the present utility model;

[0019] Figure 3 This is an embodiment of the present utility model. Figure 2 A cross-sectional view along the AA direction;

[0020] Figure 4 This is a three-dimensional schematic diagram of the steam furnace after removing part of the casing structure according to an embodiment of the present utility model.

[0021] Figure label:

[0022] Chassis 100, accommodating cavity 101, air intake 102, smoke exhaust 103;

[0023] Gas assembly 200, combustion shell 210, combustion chamber 211, burner 220;

[0024] Smoke exhaust assembly 300;

[0025] Condensing assembly 400, condensing shell 410, condensing chamber 411, condensing heat exchanger 420;

[0026] First air curtain passage 510, second air curtain passage 520;

[0027] Partition 610, air supply channel 620, air inlet 621. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] Reference Figures 1 to 4 The steam boiler of this utility model embodiment includes a casing 100, a gas assembly 200, and a flue gas assembly 300. The casing 100 has a receiving cavity 101, and a portion of the outer wall of the casing 100 has an air intake 102 communicating with the receiving cavity 101. The casing 100 also has a flue gas outlet 103. The gas assembly 200 is disposed in the casing 100 and located within the receiving cavity 101. The gas assembly 200 includes a combustion shell 210, a burner 220, and a combustion heat exchanger. The combustion shell 210 forms a combustion chamber 211, which communicates with the receiving cavity 101. The burner 220 is disposed in the combustion shell 210, and the combustion heat exchanger is disposed in the combustion shell 210 and located within the combustion chamber 211. The flue gas assembly 300 is disposed in the combustion shell 210 and is used to generate airflow from the combustion chamber 211 to the flue gas outlet 103.

[0033] When the steam boiler is working, the gas is burned at the burner 220 to heat the medium in the combustion heat exchanger. The flue gas exhaust assembly 300 draws the flue gas in the combustion chamber 211 and discharges it through the exhaust port 103, which creates a negative pressure in the combustion chamber 211. Since the housing cavity 101 of the casing 100 is connected to the combustion chamber 211, the air in the housing cavity 101 is drawn into the combustion chamber 211. The air outside the casing 100 is also drawn into the housing cavity 101 of the casing 100 through the air intake port 102 under the action of air pressure. At this time, the air flowing through the air intake port 102 recovers the heat of the casing 100, achieves the air preheating effect, and reduces the temperature of the casing 100, thereby improving the heat dissipation effect of the casing 100.

[0034] Specifically, the exhaust assembly 300 is a fan that facilitates the removal of flue gas from the combustion chamber 211 to create a negative pressure environment. It is conceivable that the exhaust assembly 300 could also be a structure such as an air pump.

[0035] In this embodiment, a condensing assembly 400 is also included. The condensing assembly 400 is disposed in the casing 100 and located in the receiving cavity 101. The condensing assembly 400 includes a condensing shell 410 and a condensing heat exchanger 420. The condensing shell 410 forms a condensing chamber 411, which is connected to the combustion chamber 211 via an exhaust assembly 300 and is also connected to an exhaust port 103. The condensing heat exchanger 420 is disposed in the condensing shell 410 and located in the condensing chamber 411, and is connected to the combustion heat exchanger. The exhaust assembly 300 draws the high-temperature flue gas from the combustion chamber 211 into the condensing chamber 411 of the condensing shell 410. The high-temperature flue gas can exchange heat with the condensing heat exchanger 420, preheating the medium within the condensing heat exchanger 420 and recovering the heat from the flue gas. Subsequently, the medium in the condensing heat exchanger 420 can enter the combustion heat exchanger for further heating to a predetermined temperature. The condensing assembly 400 helps improve the thermal efficiency of the steam boiler.

[0036] Specifically, the bottom of the condenser shell 410 is provided with a drain outlet, which is connected to the condenser chamber 411. When the flue gas is cooled by the condenser heat exchanger 420, the water vapor in the flue gas will liquefy and can be discharged from the condenser chamber 411 through the drain outlet.

[0037] In this embodiment, the combustion shell 210 is located to the left of the condensation shell 410, and the combustion shell 210 and the condensation shell 410 are arranged side by side. Both the left and right walls of the chassis 100 are provided with air intake holes 102, with more air intake holes 102 on the left wall than on the right wall. The combustion shell 210 radiates more heat to the left wall of the chassis 100 than to the right wall. Therefore, providing more air intake holes 102 on the left wall of the chassis 100 allows for better cooling and heat recovery of the key heat-generating areas of the chassis 100, and improves the overall air preheating effect.

[0038] In this embodiment, the air intake holes 102 on the left side wall are all located on the upper part of the left side wall, and the air intake holes 102 on the right side wall are all located on the upper part of the right side wall. When the gas assembly 200 is working, it is more likely to cause the upper area of ​​the chassis 100 to heat up. Therefore, the air intake holes 102 are mainly located on the upper part of the chassis 100, which can better cool and recover the key heat-generating areas of the chassis 100 and improve the overall air preheating effect.

[0039] In this embodiment, the top wall of the chassis 100 is provided with air intake holes 102, with more air intake holes 102 on the left side of the top wall than on the right side. Since the combustion shell 210 is located to the left of the condenser shell 410, the combustion shell 210 radiates heat more significantly to the left side of the chassis 100, while the condenser chamber 411 radiates heat less significantly to the right side of the chassis 100. Therefore, the greater number of air intake holes 102 on the left side of the top wall than on the right side allows for better cooling and heat recovery of the key heat-generating areas of the chassis 100, and improves the overall air preheating effect.

[0040] In this embodiment, the exhaust assembly 300 is connected to the upper end of the combustion chamber 211, the burner 220 is located at the lower part of the combustion chamber 211, and the exhaust assembly 300 is connected to one side of the condensing chamber 411 in the horizontal direction. The upper end of the condensing chamber 411 is connected to the exhaust port 103. Gas is introduced into the burner 220 and combusted, heating the medium in the combustion heat exchanger. The high-temperature flue gas then rises and is drawn into the condensing chamber 411 through the exhaust assembly 300. The medium in the condensing heat exchanger 420 absorbs the heat from the high-temperature flue gas, recovering waste heat to cool the flue gas. The flue gas is then discharged from the exhaust port 103 above. This layout utilizes the principle of rising hot air, which is beneficial for creating a negative pressure environment within the combustion chamber 211.

[0041] In this embodiment, the lower part of the combustion chamber 211 is connected to the lower part of the accommodating cavity 101. A first air curtain channel 510 is formed between the combustion shell 210 and the side wall of the chassis 100, and a second air curtain channel 520 is formed between the condensing shell 410 and the side wall of the chassis 100. Since the intake port 102 is mainly located in the upper part of the chassis 100, after the outside air enters the accommodating cavity 101 from the upper part of the chassis 100, it needs to pass through the first air curtain channel 510 between the side wall of the chassis 100 and the combustion shell 210, or through the second air curtain channel 520 between the side wall of the chassis 100 and the condensing shell 410, before it can enter the combustion chamber 211 from the lower part, forming an air curtain-like flow along the side wall of the chassis 100, thereby enabling cooling and heat recovery of a larger area of ​​the chassis 100.

[0042] In this embodiment, a partition 610 is also included. The partition 610 is disposed in the chassis 100 and located within the accommodating cavity 101. The partition 610 is located between the combustion shell 210 and the side wall of the chassis 100, forming a gas supply channel 620 between the partition 610 and the combustion shell 210. An air inlet 621 is provided at the upper end of the gas supply channel 620, and the lower end of the gas supply channel 620 communicates with the combustion chamber 211. The main heat source for the chassis 100 is the gas assembly 200. Therefore, the partition 610 is provided between the combustion shell 210 and the side wall of the chassis 100. The partition 610 plays a certain role in blocking heat, reducing the heat radiation transfer from the combustion shell 210 to the chassis 100, thereby reducing the degree of heat generation in the chassis 100 near the combustion shell 210. Since the baffle 610 and the combustion shell 210 form an air supply channel 620, after the outside air enters the accommodating cavity 101 through the air intake 102, it can pass through the air inlet 621, go down through the air supply channel 620 and finally enter the combustion chamber 211. The flowing air can also cool the baffle 610 and recover heat, resulting in a better air preheating effect.

[0043] In this embodiment, the chassis 100 is evenly provided with a plurality of air intake holes 102 around the exhaust hole 103, which can focus on cooling and heat recovery of the area of ​​the chassis 100 near the exhaust hole 103, thereby improving the cooling and heat recovery effect of key areas of the chassis 100.

[0044] In this embodiment, the top wall and side wall of the chassis 100 are both provided with air intake holes 102. The air intake holes 102 on the top wall are round holes, and the air intake holes 102 on the side walls are louvered holes. The louvered holes on the side walls facilitate air intake while providing good concealment; the round holes on the top walls provide better air intake.

[0045] Specifically, the rear side wall of the chassis 100 is also arranged with multiple air intake holes 102, and the front wall of the chassis 100 is also arranged with a small number of air intake holes 102.

[0046] Specifically, the working medium in the combustion heat exchanger and condensation heat exchanger 420 can be water or oil, etc., and heat is transferred to the designated location through hot water or hot oil.

[0047] Specifically, the steam boiler is also equipped with a gas supply component, which can supply gas to the burner 220.

[0048] It should be understood that other assembly gaps in the chassis 100 can also allow air to enter the accommodating cavity 101. The air passing through other assembly gaps in the chassis 100 can also carry away the heat of the chassis 100, reduce the temperature of the chassis 100, and preheat the air using heat recovery.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A steam furnace, characterized in that, include: The chassis (100) is provided with a receiving cavity (101), and at least a portion of the outer wall of the chassis (100) is provided with an air intake hole (102) communicating with the receiving cavity (101), and the chassis (100) is provided with a smoke exhaust hole (103). A gas assembly (200) is disposed in the chassis (100) and located within the accommodating cavity (101). The gas assembly (200) includes a combustion shell (210), a burner (220), and a combustion heat exchanger. The combustion shell (210) forms a combustion chamber (211), which communicates with the accommodating cavity (101). The burner (220) is disposed in the combustion shell (210), and the combustion heat exchanger is disposed in the combustion shell (210) and located within the combustion chamber (211). A smoke exhaust assembly (300) is disposed on the combustion shell (210) and is used to generate airflow from the combustion chamber (211) to the smoke exhaust port (103).

2. The steam furnace according to claim 1, characterized in that: It also includes a condensing assembly (400), which is disposed in the chassis (100) and located in the accommodating cavity (101). The condensing assembly (400) includes a condensing shell (410) and a condensing heat exchanger (420). The condensing shell (410) forms a condensing chamber (411). The condensing chamber (411) is connected to the combustion chamber (211) through the exhaust assembly (300). The condensing chamber (411) is connected to the exhaust port (103). The condensing heat exchanger (420) is disposed in the condensing shell (410) and located in the condensing chamber (411). The condensing heat exchanger (420) is connected to the combustion heat exchanger.

3. The steam furnace according to claim 2, characterized in that: The combustion shell (210) is located to the left of the condensation shell (410). The combustion shell (210) and the condensation shell (410) are arranged side by side. The left and right walls of the chassis (100) are provided with the air intake holes (102). The number of air intake holes (102) on the left wall is greater than that on the right wall.

4. The steam furnace according to claim 3, characterized in that: The air intake holes (102) on the left side wall are all located on the upper part of the left side wall, and the air intake holes (102) on the right side wall are all located on the upper part of the right side wall.

5. The steam furnace according to claim 2, characterized in that: The top wall of the chassis (100) is provided with the air intake hole (102), and the air intake hole (102) on the left side of the top wall is more than the air intake hole (102) on the right side of the top wall.

6. The steam furnace according to claim 2, characterized in that: The exhaust assembly (300) is connected to the upper end of the combustion chamber (211), the burner (220) is located in the lower part of the combustion chamber (211), the exhaust assembly (300) is connected to one side of the condensation chamber (411) in the horizontal direction, and the upper end of the condensation chamber (411) is connected to the exhaust port (103).

7. The steam furnace according to claim 4, characterized in that: The lower part of the combustion chamber (211) is connected to the lower part of the accommodating cavity (101), a first air curtain channel (510) is formed between the combustion shell (210) and the side wall of the chassis (100), and a second air curtain channel (520) is formed between the condenser shell (410) and the side wall of the chassis (100).

8. The steam furnace according to claim 1, characterized in that: It also includes a partition (610), which is disposed in the chassis (100) and located in the accommodating cavity (101). The partition (610) is located between the combustion shell (210) and the side wall of the chassis (100). An air supply channel (620) is formed between the partition (610) and the combustion shell (210). An air inlet (621) is provided at the upper end of the air supply channel (620), and the lower end of the air supply channel (620) is connected to the combustion chamber (211).

9. The steam furnace according to claim 1, characterized in that: The chassis (100) is evenly provided with a plurality of air intake holes (102) around the smoke exhaust hole (103).

10. The steam furnace according to claim 1, characterized in that: The top wall and side wall of the chassis (100) are provided with the air intake holes (102). The air intake holes (102) located on the top wall are round holes, and the air intake holes (102) located on the side wall are louvered holes.

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