Ventilation device for gas appliance
By designing a fuel -ventilating device that adopts integrated pipelines and ring convex structures, it solves the problem that the ventilation devices in the existing technology cannot take into account low cost and good intake effects, and achieve a stable and efficient intake effect.
Patent Information
- Application Number
- CN202421220939.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The existing combustion tool ventilation devices cannot take into account both low cost and good air intake effects. The main reason is that the flow channel and flare port are not accurate, which affects the sealing and air intake effects.
A venter device is designed with a ventilation device with an integrated pipeline structure. The ends of the two pipelines are speaker mouths. The runner is connected by the outside of the hood and the structure of the ring and the curved groove. The upper shell and lower shell are fixed through the bolt to enhance stability.
Under the premise of low cost, improve the intake effect of the fueling device of the fuel, and avoid the accuracy difference and sealing problems caused by forging errors, without additional polishing operations.
Smart Images
Figure CN222417450U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ventilation devices, in particular to a ventilation device for a fuel appliance. Background Art
[0002] The ventilation device in the gas appliance is also called a venturi tube, and its main function is to introduce gas and mix it with air. The conventional ventilation device mainly includes an upper shell and a lower shell, which are forged and pressed into one piece, and a part of the flow channel is set on the upper shell and the lower shell respectively. After the upper shell and the lower shell are assembled, a complete flow channel is formed, and both ends of the flow channel are in the shape of a bell mouth. However, due to the poor forging accuracy, the accuracy of the corresponding flow channel and the bell mouth on the upper shell and the lower shell is also poor. After the upper shell and the lower shell are assembled, the sealing of the flow channel is easily affected by the error, which in turn affects the air intake of the gas appliance, and the gas appliance cannot achieve a better combustion effect; although the upper shell and the lower shell formed by forging can improve the accuracy and improve the air intake effect by grinding, grinding will lead to an increase in the cost of the ventilation device. Therefore, the current ventilation device cannot take into account both low cost and good air intake effect. Utility Model Content
[0003] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a ventilation device for a fuel appliance to solve the technical problem that the ventilation device in the prior art cannot take into account both low cost and good air intake effect.
[0004] In order to solve the above technical problems, the utility model provides a ventilation device for a fuel appliance, including a pipeline and a shell, the pipeline is an integrated structure, the two ends of the pipeline are respectively a first bell mouth and a second bell mouth, a through flow channel is axially arranged in the pipeline, the shell includes an upper shell and a lower shell, the bottom end of the upper shell is provided with a first mounting groove, the top end of the lower shell is provided with a second mounting groove, the upper shell is connected to the top end of the lower shell, the first mounting groove and the second mounting groove are surrounded to form an installation cavity, the pipeline is connected in the installation cavity, the installation cavity has a first opening and a second opening that are connected to the outside of the shell, and the flow channel is connected to the first opening and the second opening.
[0005] After adopting the above structure, the ventilation device for a fuel appliance of the utility model has the following advantages: the pipeline still adopts the first bell mouth and the second bell mouth, and its flow channel is connected with the outside of the shell through the first opening and the second opening for ventilation. The flow channel is directly formed in the pipeline of the integrated structure, and then the pipeline is installed in the upper shell and the lower shell. Therefore, the flow channel, the first bell mouth and the second bell mouth will not have poor precision due to forging errors, there is no problem of poor sealing, and there is no need for additional grinding operations. Therefore, while meeting the low cost, it can have a better air intake effect.
[0006] As an improvement, a closed annular annular protrusion is connected circumferentially on the outer wall of the first bell mouth, a first protrusion is provided at the top of the first mounting groove, the lower surface of the first protrusion is a concave arc surface, a first arc groove is provided on the lower surface of the first protrusion, a second protrusion is provided at the bottom end of the second mounting groove, the upper surface of the second protrusion is a concave arc surface, a second arc groove is provided on the upper surface of the second protrusion, the first arc groove and the second arc groove are together formed an annular groove, and the annular protrusion is clamped in the annular groove; by adopting this structure, the stability of the connection between the pipeline and the upper shell body and the lower shell body is improved by clamping the annular protrusion in the annular groove.
[0007] As an improvement, the first arc-shaped groove separates the first protrusion into a first inner protrusion close to the interior of the upper shell and a first outer protrusion close to the exterior of the upper shell, and the second arc-shaped groove separates the second protrusion into a second inner protrusion close to the interior of the lower shell and a second outer protrusion close to the exterior of the lower shell. The lower surface of the first inner protrusion and the upper surface of the second inner protrusion are both inclined surfaces matching the outer peripheral wall of the first bell mouth, and both inclined surfaces are in contact with the outer peripheral wall of the first bell mouth. With this structure, the first inner protrusion and the second inner protrusion fit better with the first bell mouth, further improving the stability of the connection between the pipeline and the upper shell and the lower shell.
[0008] As an improvement, a protrusion is connected to the bottom end of the second mounting groove, and the second bell-mouth end is against the protrusion; with this structure, the protrusion is used to limit the pipeline axially, and in cooperation with the above-mentioned annular protrusion and annular groove, it can also further improve the stability of the connection between the pipeline and the upper shell and the lower shell.
[0009] As an improvement, the upper shell is provided with a limiting groove along the edge of the first mounting groove, and the lower shell is provided with a limiting protrusion along the edge of the second mounting groove, and the limiting protrusion is clamped in the limiting groove; adopting this structure, the stability of the connection between the upper shell and the lower shell is improved, and at the same time, the limiting protrusion and the limiting groove can also play a guiding role so that the upper shell and the lower shell are accurately connected.
[0010] As an improvement, one end of the first mounting groove forms an upper opening on the upper shell, and one end of the second mounting groove forms a lower opening on the lower shell. The upper opening and the lower opening together form a first opening, and the second opening is a through hole that vertically penetrates the upper shell and is connected to the other end of the first mounting groove.
[0011] As an improvement, the upper shell and the lower shell are fixedly connected by bolts; adopting this structure, the stability of the connection between the upper shell and the lower shell is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0013] Figure 2 It is a three-dimensional structural schematic diagram of the lower shell of the utility model.
[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper shell of the utility model.
[0015] Figure 4 It is a three-dimensional structural schematic diagram of the pipeline in the utility model.
[0016] Figure numerals: 1, pipeline; 2, shell; 21, upper shell; 22, lower shell; 3, first bell mouth; 4, second bell mouth; 5, flow channel; 6, first mounting groove; 7, second mounting groove; 8, first opening; 81, upper opening; 82, lower opening; 9, second opening; 10, annular convex portion; 11, first protrusion; 111, first inner protrusion; 112, first outer protrusion; 12, first arc-shaped groove; 13, second protrusion; 131, second inner protrusion; 132, second outer protrusion; 14, second arc-shaped groove; 15, inclined surface; 16, protrusion; 17, limit groove; 18, limit protrusion. DETAILED DESCRIPTION
[0017] The ventilation device for a fuel appliance of the utility model is described in detail below in conjunction with the accompanying drawings.
[0018] like Figures 1 to 4 As shown, a ventilation device for a fuel appliance comprises a pipeline 1 and a shell 2. The pipeline 1 is an integrated structure, and the two ends of the pipeline 1 are respectively a first bell mouth 3 and a second bell mouth 4. A through flow channel 5 is provided in the pipeline 1 along the axial direction. Similarly, the two ends of the flow channel 5 are also in the form of bell mouths. Figures 1 to 3 As shown, the housing 2 includes an upper housing 21 and a lower housing 22. The bottom end of the upper housing 21 is provided with a first mounting groove 6, and the top end of the lower housing 22 is provided with a second mounting groove 7. It should be noted that the bottom end of the upper housing 21 and the top end of the lower housing 22 in this embodiment are both Figure 1 The orientation of the housing 2 in the connected state shown is used as a standard, the upper housing 21 is connected to the top of the lower housing 22, the first mounting groove 6 and the second mounting groove 7 are surrounded to form a mounting cavity, the pipeline 1 is connected in the mounting cavity, the mounting cavity has a first opening 8 and a second opening 9 communicating with the outside of the housing 2, and the flow channel 5 is connected with the first opening 8 and the second opening 9. Figure 3 As shown, one end of the first mounting groove 6 forms an upper opening 81 on the upper shell 21. Figure 2 As shown, one end of the second mounting groove 7 forms a lower opening 82 on the lower shell 22, and the upper opening 81 and the lower opening 82 together form a first opening 8. Figure 3 As shown, the second opening 9 is a through hole that vertically penetrates the upper shell 21 and is connected to the other end of the first mounting groove 6 . The first bell mouth 3 is connected to one side of the first opening 8 , and the second bell mouth 4 is located on one side of the through hole of the second opening 9 .
[0019] like Figures 2 to 4As shown, a closed annular annular convex portion 10 is circumferentially connected to the outer wall of the first bell mouth 3, and the outer end face of the annular convex portion 10 is flush with the outer end face of the first bell mouth 3. A first protrusion 11 is provided at the top of the first mounting groove 6, and the lower surface of the first protrusion 11 is a concave arc surface, and a first arc groove 12 is provided on the lower surface of the first protrusion 11. A second protrusion 13 is provided at the bottom end of the second mounting groove 7, and the upper surface of the second protrusion 13 is a concave arc surface, and a second arc groove 14 is provided on the upper surface of the second protrusion 13. The first arc groove 12 and the second arc groove 14 are surrounded by an annular groove, and the annular convex portion 10 is clamped in the annular groove, wherein an upper opening 81 is formed on the first protrusion 11, and a lower opening 82 is formed on the second protrusion 13.
[0020] In addition, the first arc-shaped groove 12 separates the first protrusion 11 into a first inner protrusion 111 close to the interior of the upper shell 21 and a first outer protrusion 112 close to the exterior of the upper shell 21, and the second arc-shaped groove 14 separates the second protrusion 13 into a second inner protrusion 131 close to the interior of the lower shell 22 and a second outer protrusion 132 close to the exterior of the lower shell 22. The lower surface of the first inner protrusion 111 and the upper surface of the second inner protrusion 131 are both inclined surfaces 15 that match the outer peripheral wall of the first bell mouth 3. That is to say, the inner diameter of the inclined surface 15 gradually decreases toward the interior of the shell 2, and the two inclined surfaces 15 are both in contact with the outer peripheral wall of the first bell mouth 3.
[0021] like Figure 2 As shown, a protrusion 16 is connected to the bottom end of the second mounting groove 7, and the end of the second bell mouth 4 abuts against the protrusion 16. The annular protrusion 10 is clamped in the annular groove to cooperate with the protrusion 16 to achieve axial limitation of the pipeline 1. At the same time, the structure in which the annular protrusion 10 is clamped in the annular groove can limit the pipeline 1 radially, thereby preventing the pipeline 1 from moving in the shell 2.
[0022] like Figure 2 and Figure 3 As shown, the upper shell 21 is provided with a limiting groove 17 arranged along the edge of the first mounting groove 6, and the lower shell 22 is provided with a limiting protrusion 18 arranged along the edge of the second mounting groove 7, and the limiting protrusion 18 is clamped in the limiting groove 17; in addition, the upper shell 21 and the lower shell 22 are fixedly connected by bolts. In this embodiment, a plurality of threaded holes are arranged on the upper shell 21, and the plurality of threaded holes are distributed along the outer circumference of the first mounting groove 6, and a plurality of circular holes corresponding to the threaded holes are arranged on the lower shell 22, and the plurality of circular holes are also distributed along the outer circumference of the second mounting groove 7, and the bolts pass through the circular holes and are threadedly connected with the threaded holes.
[0023] The pipeline 1 in the present invention still adopts the first bell mouth 3 and the second bell mouth 4, and its flow channel 5 is connected with the outside of the shell 2 through the first opening 8 and the second opening 9 for ventilation. The flow channel 5 is directly formed in the pipeline 1 of the integrated structure, and then the pipeline 1 is installed in the upper shell 21 and the lower shell 22. Therefore, the flow channel 5, the first bell mouth 3 and the second bell mouth 4 will not have poor precision due to forging errors, there is no problem of poor sealing, and there is no need for additional grinding operations. Therefore, it can have a good air intake effect while meeting the low cost.
[0024] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned one implementation mode, and all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.
Claims
1. A ventilation device for a fuel appliance, characterized in that: The invention comprises a pipeline (1) and a shell (2), wherein the pipeline (1) is an integrated structure, and the two ends of the pipeline (1) are respectively a first bell mouth (3) and a second bell mouth (4), and a through flow channel (5) is provided in the pipeline (1) along the axial direction, and the shell (2) comprises an upper shell (21) and a lower shell (22), and the bottom end of the upper shell (21) is provided with a first mounting groove (6), and the top end of the lower shell (22) is provided with a second mounting groove (7), and the upper shell (21) is connected to the top end of the lower shell (22), and the first mounting groove (6) and the second mounting groove (7) are surrounded to form a mounting cavity, and the pipeline (1) is connected in the mounting cavity, and the mounting cavity has a first opening (8) and a second opening (9) which are connected to the outside of the shell (2), and the flow channel (5) is connected to the first opening (8) and the second opening (9).
2. The ventilation device for a gas appliance according to claim 1, characterized in that: A closed annular annular protrusion (10) is circumferentially connected to the outer wall of the first bell mouth (3); a first protrusion (11) is provided at the top of the first mounting groove (6); the lower surface of the first protrusion (11) is a concave arc surface; a first arc-shaped groove (12) is provided on the lower surface of the first protrusion (11); a second protrusion (13) is provided at the bottom end of the second mounting groove (7); the upper surface of the second protrusion (13) is a concave arc surface; a second arc-shaped groove (14) is provided on the upper surface of the second protrusion (13); the first arc-shaped groove (12) and the second arc-shaped groove (14) are combined to form an annular groove; the annular protrusion (10) is snapped into the annular groove.
3. The ventilation device for a gas appliance according to claim 2, characterized in that: The first arc-shaped groove (12) separates the first protrusion (11) into a first inner protrusion (111) close to the interior of the upper shell (21) and a first outer protrusion (112) close to the exterior of the upper shell (21); the second arc-shaped groove (14) separates the second protrusion (13) into a second inner protrusion (131) close to the interior of the lower shell (22) and a second outer protrusion (132) close to the exterior of the lower shell (22); the lower surface of the first inner protrusion (111) and the upper surface of the second inner protrusion (131) are both inclined surfaces (15) matching the outer peripheral wall of the first bell mouth (3); and the two inclined surfaces (15) are both in contact with the outer peripheral wall of the first bell mouth (3).
4. The ventilation device for a gas appliance according to claim 1 or 2, characterized in that: A protrusion (16) is connected to the bottom end of the second mounting groove (7), and the end of the second bell mouth (4) abuts against the protrusion (16).
5. The ventilation device for a gas appliance according to claim 1, characterized in that: The upper shell (21) is provided with a limiting groove (17) arranged along the edge of the first mounting groove (6), and the lower shell (22) is provided with a limiting protrusion (18) arranged along the edge of the second mounting groove (7), and the limiting protrusion (18) is snap-fitted into the limiting groove (17).
6. The ventilation device for a gas appliance according to claim 1, characterized in that: One end of the first mounting groove (6) forms an upper opening (81) on the upper shell (21), and one end of the second mounting groove (7) forms a lower opening (82) on the lower shell (22); the upper opening (81) and the lower opening (82) together form the first opening (8); and the second opening (9) is a through hole that vertically penetrates the upper shell (21) and is connected to the other end of the first mounting groove (6).
7. The ventilation device for a gas appliance according to claim 1, characterized in that: The upper shell (21) and the lower shell (22) are fixedly connected by bolts.