Novel furnace door and furnace body sealing and cooling structure

Abstract

The utility model discloses a novel furnace door and furnace body sealing and cooling structure which comprises a furnace body and a furnace door which are matched with each other, the furnace body is provided with an inner cavity and a furnace opening, and a sealing ring is arranged between the outer side end face of the furnace opening and the furnace door; the edges of the furnace opening and the inner cavity opening are connected through a step-shaped structure, an annular elastic piece protruding outwards is arranged on the outer side end face of the inner cavity opening, and the top end of the annular elastic piece is matched with the inner end face of the furnace door; an annular cold air channel is formed among the step-shaped structure, the annular elastic piece and the inner end face of the furnace door and communicated with a cooling sleeve. According to the novel furnace door and furnace body sealing and cooling structure, the sealing ring can be effectively and rapidly cooled, and the service life of the sealing ring is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of ovens, in particular to a novel sealing and cooling structure for an oven door and an oven body. Background Art

[0002] Due to the increasing production requirements for electronic products in the electronics industry, many electronic products need to be baked under vacuum and high pressure. To ensure the vacuum degree and temperature stability inside the oven, a sealing component needs to be provided between the oven body and the oven door. However, as the temperature inside the oven rises, the temperature of the sealing component on the traditional oven body also rises accordingly, resulting in a short service life of the sealing component. When the sealing component uses a silicone R-shaped sealing strip, although heat can be removed by introducing process gas into its inner cavity, not only does it need to transform the sealing strip, damaging its structure, but also the high temperature inside the oven still has an adverse effect on the outer surface of the R-shaped sealing strip, and the cooling effect is still not good enough. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a novel sealing and cooling structure for an oven door and an oven body, which can effectively and quickly cool the sealing ring and extend the service life of the sealing ring.

[0004] To achieve the above purpose, the utility model provides a novel sealing and cooling structure for an oven door and an oven body, including a matching oven body and oven door. The oven body is provided with an inner cavity, and the oven body is provided with an oven opening. A sealing ring is arranged between the outer end face of the oven opening and the oven door; the edges between the oven opening and the opening of the inner cavity are connected through a stepped structure. An outwardly protruding annular elastic sheet is arranged at the outer end face of the opening of the inner cavity, and the top end of the annular elastic sheet is matched with the inner end face of the oven door; a circular cold air channel is formed among the stepped structure, the annular elastic sheet and the inner end face of the oven door, and the cold air channel is communicated with a cooling sleeve.

[0005] As a further improvement of the utility model, the cooling sleeve is arranged on the oven body, and the air outlet of the cooling sleeve is arranged on the inner wall of the stepped structure.

[0006] As a further improvement of the utility model, the number of the cooling sleeves is at least two, and the air outlets of the cooling sleeves are arranged around the circular cold air channel.

[0007] As a further improvement of the utility model, a step surface is arranged at the edge of the inner side surface of the oven door, the step surface surrounds the outer side of the inner end face, and the inner end face protrudes from the step surface; the sealing ring is arranged between the step surface and the outer end face of the oven opening; the sealing ring is installed on the outer end face of the oven opening.

[0008] As a further improvement of the utility model, the sealing ring is an R-shaped pressing sealing ring.

[0009] Advantageous Effects

[0010] Compared with the prior art, the advantages of the novel furnace door and furnace body sealing and cooling structure of the present utility model are as follows:

[0011] 1. After the furnace door is closed, the outer end face of the furnace opening and the furnace door jointly compress the sealing ring. The top end of the annular elastic sheet is pressed against the inner end face of the furnace door. A circular cold air channel is formed among the stepped structure, the annular elastic sheet and the inner end face of the furnace door. By injecting low-temperature process gas into the cold air channel through the cooling sleeve, the inner cavity of the furnace body can be separated from the sealing ring by the low-temperature process gas, and the cooling effect on the sealing ring is better. There is no need to introduce low-temperature process gas into the sealing ring, which is not destructive to the sealing ring and prolongs the service life of the sealing ring. In addition, while ensuring that the sealing ring is still in a squeezed state, the inner end face of the furnace door is slightly separated from the top end of the annular elastic sheet to form a gap, so that the low-temperature process gas after cooling the sealing ring can enter the inner cavity of the furnace body along the gap for recycling, saving the consumption of process gas. Among them, the process gas is generally the gas introduced during the operation of the baking furnace in the process to meet certain requirements. For example, when the oxygen content needs to be lower than a certain value, nitrogen needs to be introduced into the baking furnace, then nitrogen is the process gas.

[0012] 2. Compared with setting the cooling sleeve on the furnace door, setting the cooling sleeve on the furnace body, and setting the air outlet of the cooling sleeve on the inner wall of the stepped structure, the installation is more convenient.

[0013] 3. The number of cooling sleeves is at least two, and the air outlets of each cooling sleeve are arranged around the circular cold air channel, which is beneficial to improving the uniformity of the cooling effect at various places in the cold air channel.

[0014] Through the following description and in combination with the accompanying drawings, the present utility model will become clearer. These drawings are used to explain the embodiments of the present utility model. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a three-dimensional view of the novel furnace door and furnace body sealing and cooling structure;

[0017] Figure 2 It is a three-dimensional view of the furnace body;

[0018] Figure 3 It is the front view of the novel furnace door and furnace body sealing and cooling structure;

[0019] Figure 4 View A-A of Figure 3 ;

[0020] Figure 5 Schematic diagram after the furnace door of the new furnace door and furnace body sealing and cooling structure is opened;

[0021] Figure 6 View of Figure 4 the enlarged view at position B of

[0022] Figure 7 Flow chart of low-temperature process gas of the new furnace door and furnace body sealing and cooling structure. Specific embodiments

[0023] Embodiments of the present utility model will now be described with reference to the accompanying drawings.

[0024] Embodiment

[0025] The specific embodiments of the present utility model are as Figures 1 to 7 shown. A new furnace door and furnace body sealing and cooling structure includes a cooperating furnace body 1 and furnace door 2. Specifically, the furnace door 2 is rotatably connected to the furnace body 1. The furnace body 1 is provided with an inner cavity 11, and a furnace opening 10 is provided on the furnace body 1. A sealing ring 4 is provided between the outer end face of the furnace opening 10 and the furnace door 2. The edges between the furnace opening 10 and the opening of the inner cavity 11 are connected by an annular stepped structure 12. An outwardly protruding annular elastic sheet 5 is provided at the outer end face of the opening of the inner cavity 11, and the top end of the annular elastic sheet 5 cooperates with the inner end face 22 of the furnace door 2. An annular cold air channel 7 is formed among the stepped structure 12, the annular elastic sheet 5 and the inner end face 22 of the furnace door 2, and the cold air channel 7 is communicated with a cooling sleeve 3. Among them, the annular elastic sheet 5 can be made of a high-temperature resistant metal material, and the top end of the annular elastic sheet 5 has elasticity, so that it can undergo elastic deformation when contacting the furnace door 2 to ensure close contact and achieve a sealing effect. In this embodiment, the cross-section of the annular elastic sheet 5 is designed in a Z shape and made of SUS304# stainless steel plate, and the plate thickness is usually less than 1 mm to ensure that the annular elastic sheet 5 can be compressed and has elasticity.

[0026] The cooling sleeve 3 is provided on the furnace body 1, and the air outlet 31 of the cooling sleeve 3 is provided on the side inner wall of the stepped structure 12.

[0027] The number of the cooling sleeves 3 is at least two, and the air outlets 31 of the cooling sleeves 3 are arranged around the annular cold air channel 7. In this embodiment, the number of the cooling sleeves 3 is at least two and they are arranged symmetrically left and right.

[0028] The inner side edge of the furnace door 2 is provided with a stepped surface 21. The stepped surface 21 surrounds the outer side of the inner end surface 22, and the inner end surface 22 protrudes from the stepped surface 21. The sealing ring 4 is arranged between the stepped surface 21 and the outer end surface of the furnace opening 10. Among them, the sealing ring 4 is installed on the outer end surface of the furnace opening 10. In this embodiment, the sealing ring 4 is an R-shaped pressing sealing ring.

[0029] After placing the product to be baked into the inner cavity 11 of the furnace body 1 and closing the furnace door 2, the outer end surface of the furnace opening 10 and the furnace door 2 jointly press the sealing ring 4. The top end of the annular spring piece 5 is pressed against the inner end surface 22 of the furnace door 2. An annular cold air channel 7 is formed among the stepped structure 12, the annular spring piece 5 and the inner end surface 22 of the furnace door 2. By injecting low-temperature process gas into the cold air channel 7 through the cooling sleeve 3, the inner cavity 11 of the furnace body 1 and the sealing ring 4 can be separated by the low-temperature process gas, and the cooling effect on the sealing ring 4 is better. There is no need to introduce low-temperature process gas into the sealing ring 4, which is not destructive to the sealing ring 4 and prolongs the service life of the sealing ring 4. In addition, while ensuring that the sealing ring 4 is still in a compressed state, the inner end surface 22 of the furnace door 2 is slightly separated from the top end of the annular spring piece 5 to form a gap 6 therebetween, so that the low-temperature process gas after cooling the sealing ring 4 can enter the inner cavity 11 of the furnace body 1 along the gap 6 for recycling, saving the consumption of process gas.

[0030] The above describes the present invention in combination with the best embodiments, but the present invention is not limited to the disclosed embodiments above, and should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A novel furnace door and furnace body sealed cooling structure, comprising a furnace body (1) and a furnace door (2) that match each other, wherein the furnace body (1) is provided with an inner cavity (11), characterized in that: A furnace mouth (10) is provided on the furnace body (1), and a sealing ring (4) is provided between the outer end surface of the furnace mouth (10) and the furnace door (2); the edges of the furnace mouth (10) and the opening of the inner cavity (11) are connected via a stepped structure (12); an annular spring sheet (5) protruding outward is provided at the outer end surface of the opening of the inner cavity (11), and the top end of the annular spring sheet (5) matches the inner end surface (22) of the furnace door (2); an annular cold air channel (7) is formed between the stepped structure (12), the annular spring sheet (5) and the inner end surface (22) of the furnace door (2), and the cold air channel (7) is connected to a cooling sleeve (3).

2. A new type of furnace door and furnace body sealing cooling structure according to claim 1, characterized in that: The cooling jacket (3) is arranged on the furnace body (1), and the air outlet (31) of the cooling jacket (3) is arranged on the inner wall of the stepped structure (12).

3. A new type of furnace door and furnace body sealing cooling structure according to claim 1, characterized in that: The number of the cooling sleeves (3) is at least two, and the air outlets (31) of the cooling sleeves (3) are arranged around the annular cold air channel (7).

4. A new type of furnace door and furnace body sealing cooling structure according to claim 1, characterized in that: The inner side edge of the furnace door (2) is provided with a step surface (21), the step surface (21) surrounds the outer side of the inner end surface (22), and the inner end surface (22) protrudes from the step surface (21); the sealing ring (4) is arranged between the step surface (21) and the outer end surface of the furnace opening (10); the sealing ring (4) is installed on the outer end surface of the furnace opening (10).

5. The novel furnace door and furnace body sealing cooling structure according to claim 1 is characterized in that: The sealing ring (4) is an R-shaped tightening sealing ring.

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