Observation panel and gas heating equipment

Abstract

The utility model belongs to the technical field of fuel gas equipment, and particularly discloses an observation panel and fuel gas heating equipment. The observation panel comprises an observation plate and further comprises a panel and a fixing piece, the panel is provided with a mounting groove, an observation opening is formed in the bottom of the mounting groove, the fixing piece is a conical ring body in the initial state, and when the small-diameter end of the conical ring body is pressed, the fixing piece generates plastic deformation to form a circular ring body and is in interference fit with the interior of the mounting groove; the observation plate is clamped between the bottom of the mounting groove and the fixing piece and covers the observation opening, and the observation opening and the opening of the circular ring body at least partially coincide in the depth direction of the mounting groove. According to the observation panel disclosed by the utility model, the small-diameter end of the conical-ring-shaped fixing piece is pressed to generate plastic deformation so as to form the circular ring body which is in interference fit with the interior of the mounting groove, so that the observation panel is assembled, the material cost and the labor cost in the assembling process are reduced, and the safety and the reliability of gas heating equipment are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas equipment technical field especially relates to observation panel and gas heating equipment. BACKGROUND

[0002] Gas water heater is a kind of heating equipment that obtains hot water by the heat generated by gas combustion as heating source. In order to observe the combustion condition in the combustion chamber, the combustion chamber is usually provided with a fire hole on the observation panel for observing the flame combustion state of the burner. A mica sheet is provided at the fire hole, which utilizes the light transmission and high temperature resistance of the mica sheet to facilitate user observation while improving the safety of the observation panel. The installation of the mica sheet usually adopts a fixed plate, and the mica sheet is clamped between the observation panel and the fixed plate. The fixed plate and the observation panel are connected by welding, anchor bolt or screw mounting structure. The anchor bolt and screw mounting method generally requires at least two rivets or screws, which has high material cost and labor cost. The welding installation method will cause the welding points to rust after long-term use, resulting in the mica sheet falling off. This may cause the flame in the combustion chamber to overflow from the fire hole, which is dangerous. SUMMARY

[0003] The first technical problem solved by the utility model is to provide an observation panel that can avoid the high material cost and labor cost of the fixed plate of the existing observation panel using screw installation, and the problem of mica sheet falling off caused by welding point rusting after long-term use.

[0004] The second technical problem solved by the utility model is to provide a gas heating equipment with an observation panel that can reduce the installation material cost and labor cost of the mounting plate, avoid the risk of flame overflow caused by welding point rusting and mica sheet falling off, and improve the safety of the gas heating equipment.

[0005] The first technical problem is solved by the following technical solution:

[0006] An observation panel is provided, which includes an observation plate, a panel piece and a fixing piece. The panel piece has a mounting slot, and the bottom of the mounting slot is provided with an observation opening. In the initial state, the fixing piece is a conical ring body. When the small-diameter end of the conical ring body is pressed, the fixing piece plastically deforms to form a circular ring body and is interference-fitted in the mounting slot. The observation plate is clamped between the bottom of the mounting slot and the fixing piece. The observation plate covers the observation opening, and along the depth direction of the mounting slot, the observation opening and the opening of the circular ring body at least partially overlap.

[0007] The utility model discloses an observation panel, compared with the prior art, has the beneficial effect that: observation panel includes panel piece and fixed part, and the panel piece has the installation slot, and the bottom of installation slot is provided with the observation port. The fixed part is the conical ring body in the initial state, and when the small diameter end of the conical ring body is pressed, the fixed part can produce plastic deformation to form a circular ring body, and the circular ring body can be interference fit in the installation slot. The connection mode of interference fit ensures the reliability of the fixed part installation. The observation plate is clamped between the bottom of the installation slot and the fixed part, and the observation plate covers the observation port to ensure the sealing of the observation port. Along the depth direction of the installation slot, the observation port and the opening of the circular ring body at least partially coincide, ensuring that the user can observe the other side through the opening of the observation plate and the fixed part outside the observation port. By pressing the small diameter end of the conical ring body to make it produce plastic deformation, and forming interference fit between the installation slot in the deformation process, the connection of the fixed part and the panel piece is realized, and the installation of the observation plate is realized. Without using anchor nails, screws and other fasteners, the use of material cost and labor cost is reduced. The fixed part does not need to be welded, avoiding the rusting of the welding point after long time use, causing the observation plate and the fixed part to loosen, reducing the risk of flame overflow from the observation port.

[0008] In one embodiment, the edge of the large diameter end of the conical ring body has at least two assembly parts extending outward along the slope direction of the conical surface. When the conical ring body is pressed to form the circular ring body, the assembly parts are located on the outer circumference of the circular ring body and extend along the radial direction of the circular ring body. The assembly parts and the inner groove wall of the installation slot are interference fit.

[0009] In one embodiment, the conical ring body has a plurality of assembly parts, and the plurality of assembly parts are uniformly spaced along the circumferential direction of the conical ring body.

[0010] In one embodiment, the diameter of the observation plate is smaller than the outer diameter of the circular ring body. The installation slot has a positioning step inside. The positioning step surrounds the circumferential direction of the installation slot to form a positioning groove. The observation plate is embedded in the positioning groove.

[0011] In one embodiment, along the depth direction of the installation slot, the thickness of the observation plate is less than or equal to the groove depth of the positioning groove.

[0012] In one embodiment, the inner diameter of the installation slot is D1, the diameter of the large diameter end of the conical ring body is D2, D1-D2=D3, and D3 is 0.2mm-2mm.

[0013] In one embodiment, the inner diameter of the installation slot is D1, the outer diameter of the circular ring body is D4, D4-D1=D5, and D5 is 0.2mm-1mm.

[0014] In one of the embodiments, a projection of the observation port on the fixing member in a depth direction of the mounting groove is located in the opening of the circular ring body.

[0015] In one of the embodiments, an axial height of the circular conical ring body is greater than a depth of the mounting groove; and / or,

[0016] In the depth direction of the mounting groove, the circular ring body does not protrude from the mounting groove.

[0017] The second technical problem is solved by the following technical solution:

[0018] The gas heating equipment comprises the observation panel, and the observation panel is arranged in the combustion chamber.

[0019] Compared with the background art, the gas heating equipment has the beneficial effects that the gas heating equipment has the observation panel of any one of the embodiments, the observation panel is formed by plastic deformation of the circular conical ring body to form the circular ring body through the small-diameter end of the extrusion fixing member, and the circular ring body is in interference fit in the mounting groove, so that the installation of the observation panel is realized, the material cost and the labor cost in the assembly process are reduced, the risk of loosening of the observation panel and the fixing member caused by welding is avoided, the risk of overflow of the flame from the observation port is reduced, and the safety and reliability of the gas heating equipment are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A partial structure sectional view of the observation panel is provided for the embodiment of the utility model;

[0021] Figure 2 A structure schematic view of the fixing member before plastic deformation is provided for the embodiment of the utility model;

[0022] Figure 3 A structure top view of the fixing member after plastic deformation is provided for the embodiment of the utility model;

[0023] Figure 4 A structure top view of the fixing member after plastic deformation is provided for another embodiment of the utility model;

[0024] Figure 5 A partial structure sectional view of the observation panel before plastic deformation of the fixing member is provided for the embodiment of the utility model;

[0025] Figure 6 A partial structure sectional view of the observation panel is provided for another embodiment of the utility model;

[0026] Figure 7 For Figure 6A part of the local enlarged schematic view of the middle part;

[0027] Figure 8 The structure front view of the fixing piece before plastic deformation is provided for the embodiment of the utility model.

[0028] Label explanation:

[0029] 1, observation board;2, panel piece;21, installation groove;22, observation port;23, positioning groove;3, fixing piece;31, assembly part;32, opening. Specific implementation

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0031] In the description of the present application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0032] The terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0033] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] As Figures 1 to 8As shown, the utility model embodiment first provides an observation panel, and the observation panel includes an observation board 1 made of mica sheet. The observation panel further includes a panel piece 2 and a fixing piece 3. The panel piece 2 has an installation groove 21, and the bottom of the installation groove 21 is provided with an observation port 22. Figure 2 As shown; when the small-diameter end of the conical ring body is pressed, the fixing piece 3 can be plastically deformed to form a circular ring body, as shown in Figure 2 And Figure 3 As shown; the circular ring body can be interference fitted in the installation groove 21, and the interference fitted connection mode ensures the reliability of the installation of the fixing piece 3. The observation board 1 is clamped between the bottom of the installation groove 21 and the fixing piece 3, and the observation board 1 covers the observation port 22, thereby ensuring the sealing of the observation port 22. In the depth direction of the installation groove 21, the observation port 22 and the opening 32 of the circular ring body at least partially overlap, thereby ensuring that the user can observe the other side through the observation board 1 and the opening 32 of the fixing piece 3 outside the observation port 22. By pressing the small-diameter end of the conical ring body to make it plastically deform, and forming the interference fit between the deformed part and the installation groove 21 during the deformation process, the connection between the fixing piece 3 and the panel piece 2 is realized, and the installation of the observation board 1 is realized. Moreover, no fasteners such as anchor nails and screws are needed, thereby reducing the use of material costs and labor costs; and the fixing piece 3 does not need to be welded, thereby avoiding the rusting of the welding points after long-term use, causing the observation board 1 and the fixing piece 3 to loosen, and reducing the risk of flame overflow from the observation port 22.

[0035] The fixing piece 3 can be a sheet metal part. The sheet metal part made of metal material can be plastically deformed by hand or die stamping. The size of the deformed part is easy to control and is not easy to rebound, thereby being able to maintain good dimensional accuracy.

[0036] The edge of the large-diameter end of the conical ring body has at least two assembly parts 31 extending and protruding in the direction of the taper slope. When the conical ring body is pressed to form a circular ring body, the assembly parts 31 are located on the outer circumference of the circular ring body and extend in the radial direction of the circular ring body, thereby forming the maximum size of the fixing piece 3, as shown. Figure 4 During the process of pressing the small-diameter end of the conical ring body and the plastic deformation of the fixing piece 3, the assembly parts 31 and the inner groove wall of the installation groove 21 are interference fitted. Two or more assembly parts 31 can ensure the stability of the installation of the fixing piece 3. Through the assembly of the extended protruding assembly parts 31, the assembly parts 31 can be easily pressed against the inner groove wall of the installation groove 21 to form the interference fit, the tolerance accuracy requirement of the interference fit between the fixing piece 3 and the installation groove 21 can be relaxed, thereby reducing the machining accuracy of the observation panel and improving the assembly efficiency.

[0037] Exemplarily, the conical ring body has four assembly portions 31, which are uniformly arranged along the circumference of the conical ring body with a 90° central angle. In other embodiments, three assembly portions 31, or five assembly portions 31, or other more assembly portions 31 can be provided, without being limited by the drawings of the present embodiment.

[0038] The diameter of the observation plate 1 is less than the outer diameter of the ring body, which on the one hand ensures that the observation plate 1 can be placed in the installation groove 21 more easily, and on the other hand the clamping and fixing of the fixing member 3 to the observation plate 1 is more reliable. As shown in Figure 6 and Figure 7 In order to reduce the radial movement of the fixing member 3 after installation, the installation groove 21 has a positioning step, which surrounds the circumference of the installation groove 21 to form a positioning groove 23, and the observation plate 1 is embedded in the positioning groove 23.

[0039] In the depth direction of the installation groove 21, the observation plate 1 does not protrude from the positioning groove 23, that is, the thickness of the observation plate 1 is less than or equal to the groove depth of the positioning groove 23. Exemplarily, the observation plate 1 does not protrude from the positioning groove 23, and one side of the observation plate 1 is attached to the bottom of the positioning groove 23, and the other side is attached to the fixing member 3. Due to the existence of the positioning groove 23, the pressure on the observation plate 1 during the pressing of the fixing member 3 is reduced, preventing the observation plate 1 from being damaged.

[0040] As shown in Figure 5 , Figure 8 The inner diameter of the installation groove 21 is D1, the diameter of the large diameter end of the conical ring body before installation is D2, D1-D2=D3, and D3 is 0.2mm-2mm. D3 is the difference between the inner diameter of the installation groove 21 and the diameter of the large diameter end of the conical ring body before installation, and D3 can take any value within the range of 0.2mm-2mm, for example, D3 can be 0.2mm, 0.5mm, 1mm, or 2mm. D3 is within this range, which ensures that the conical ring body before installation can be placed in the installation groove 21 more easily, and can form an interference fit after plastic deformation.

[0041] The inner diameter of the installation groove 21 is D1, the outer diameter of the ring body is D4, D4-D1=D5, and D5 is 0.2mm-1mm. D5 is the difference between the outer diameter of the ring body after plastic deformation and the inner diameter of the installation groove 21, and D5 can take any value within the range of 0.2mm-1mm, for example, D5 can be 0.2mm, 0.5mm, 0.8mm, or 1mm. D5 is within this range, which ensures that the ring body and the installation groove 21 form an interference fit, and can be installed more easily. The specific value of D5 is set according to the outer diameter of the ring body and the tolerance accuracy requirement.

[0042] In the depth direction of the mounting groove 21, the projection of the observation hole 22 on the fixing member 3 is located in the opening 32 of the circular ring body, that is, the area of the observation hole 22 is not greater than the area of the opening 32 of the circular ring body, and the panel member 2 can partially cover the fixing member 3 to avoid the user from seeing the fixing member 3 from the observation hole 22, thereby improving the aesthetics of the observation panel.

[0043] In an embodiment, the axial height of the circular ring body is greater than the depth of the mounting groove 21. Before assembly, the observation plate 1 is placed at the bottom of the mounting groove 21, and then the circular ring body is placed on the observation plate 1 on the side away from the bottom of the mounting groove 21, and the small-diameter end of the circular ring body protrudes from the mounting groove 21. In this way, manual or mold pressure can be applied to avoid damaging the panel member 2 during extrusion of the circular ring body.

[0044] In order to improve the reliability of the installation of the fixing member 3, after the fixing member 3 is plastically deformed, in the depth direction of the mounting groove 21, the circular ring body does not protrude from the mounting groove 21, and the total thickness of the circular ring body and the observation plate 1 is less than the depth of the mounting groove 21, so that the circular ring body can be matched with the inner groove wall of the mounting groove 21 in the thickness direction, and the installation is reliable and not easy to fall off.

[0045] The utility model embodiment further provides a gas heating equipment, the gas heating equipment includes the observation panel as above, the gas heating equipment further includes the combustion chamber, the observation panel is arranged in the combustion chamber, and the observation hole 22 is used for observing the combustion condition in the combustion chamber. The gas heating equipment includes but is not limited to gas water heater, gas wall -hanging stove, gas heater and other heating equipment using gas combustion to obtain heat energy. The observation panel has the fixing member 3, the fixing member 3 is the circular ring body in the initial state, the small-diameter end of the circular ring body is pressed, and the fixing member 3 generates plastic deformation to form the circular ring body, and the circular ring body can be interference fit in the mounting groove 21, and the interference fit connection mode guarantees the reliability of the installation of the fixing member 3. The observation plate 1 is clamped between the bottom of the mounting groove 21 and the fixing member 3, and the observation plate 1 covers the observation hole 22, to ensure the sealing property of the observation hole 22. By pressing the small-diameter end of the circular ring body to make it generate plastic deformation, and forming the interference fit between the deformed body and the mounting groove 21, the connection of the fixing member 3 and the panel member 2 is realized, and the installation of the observation plate 1 is realized. Without using anchor, screw and other fasteners, the use of material cost and labor cost is reduced, and the fixing member 3 does not need to be welded, to avoid the rusting of the welding spot after long time use, causing the observation plate 1 and the fixing member 3 to fall off, reducing the risk of flame overflow from the observation hole 22, and improving the safety and reliability of the gas heating equipment.

[0046] In the specific content of the above specific embodiments, any combination of technical features can be combined without contradiction, and in order to make the description concise, not all possible combinations of the above technical features are described, but as long as the combination of technical features does not exist contradiction, it should be considered as the scope of the description.

[0047] The specific contents of the foregoing specific embodiments only express several embodiments of the present application, which are described in a relatively specific and detailed manner, but are not understood as a limitation to the patent scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, under the premise of not departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. Observation panel comprising an observation plate (1), characterized in that, The observation panel further comprises a panel piece (2) and a fixing piece (3), the panel piece (2) has a mounting groove (21), the bottom of the mounting groove (21) is provided with an observation opening (22), the fixing piece (3) is a conical ring body in the initial state, when the small-diameter end of the conical ring body is pressed, the fixing piece (3) is plastically deformed to form a circular ring body and is interference-fitted in the mounting groove (21), the observation plate (1) is clamped between the bottom of the mounting groove (21) and the fixing piece (3), the observation plate (1) covers the observation opening (22), and along the depth direction of the mounting groove (21), the observation opening (22) and the opening (32) of the circular ring body at least partially overlap.

2. The viewing panel of claim 1, wherein, The edge of the large-diameter end of the conical ring body has at least two assembly parts (31) extending in the direction of the taper slope, when the conical ring body is pressed to form the circular ring body, the assembly parts (31) are located on the outer circumference of the circular ring body and extend in the radial direction of the circular ring body, and the assembly parts (31) and the inner groove wall of the mounting groove (21) are interference-fitted.

3. The viewing panel of claim 2, wherein, The conical ring body has a plurality of assembly parts (31), and the plurality of assembly parts (31) are uniformly and spacedly arranged along the circumferential direction of the conical ring body.

4. The viewing panel of claim 1, wherein, The diameter of the observation plate (1) is smaller than the outer diameter of the circular ring body, the mounting groove (21) has a positioning step, the positioning step surrounds the circumferential direction of the mounting groove (21) to form a positioning groove (23), and the observation plate (1) is embedded in the positioning groove (23).

5. The viewing panel of claim 4, wherein, Along the depth direction of the mounting groove (21), the thickness of the observation plate (1) is less than or equal to the groove depth of the positioning groove (23).

6. The viewing panel of claim 1, wherein, The inner cavity diameter of the mounting groove (21) is D1, the diameter of the large-diameter end of the conical ring body is D2, D1-D2=D3, and D3 is 0.2mm-2mm.

7. The viewing panel of claim 1, wherein, The inner cavity diameter of the mounting groove (21) is D1, the outer diameter of the circular ring body is D4, D4-D1=D5, and D5 is 0.2mm-1mm.

8. The viewing panel of claim 1, wherein, Along the depth direction of the mounting groove (21), the projection of the observation opening (22) on the fixing piece (3) is located in the opening (32) of the circular ring body.

9. The viewing panel of claim 6, wherein, The axial height of the conical ring body is greater than the depth of the mounting groove (21); and / or, Along the depth direction of the mounting groove (21), the circular ring body does not protrude out of the mounting groove (21).

10. A gas heating appliance characterised in that, The gas heating device comprises the observation panel according to any one of claims 1-9, and further comprises a combustion chamber, the observation panel is arranged in the combustion chamber, and the observation opening (22) is used for observing the combustion in the combustion chamber.

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