Wind pressure sensor of wall-hanging stove gas water heater

Abstract

The utility model discloses a wind pressure sensor of a wall-hanging stove gas water heater, which comprises a left shell cover, a right shell cover, a stainless steel elastic thin strip sheet, a circular elastic soft rubber film sheet and a magnetic Hall sensor, a boss of the product is arranged at the edge of a wind pressure positive pressure chamber, and the root part of the elastic thin strip sheet is fixedly connected to the boss; the magnetic ring, the central left circular plastic clamping piece and the central left circular plastic diameter expanding piece are sequentially stacked in the middle of one surface of the circular elastic soft rubber film piece; the central right circular plastic clamping piece is fixedly connected to the middle of the other side of the circular elastic soft rubber film piece, and the middle of the central right circular plastic clamping piece is fixedly connected with the elastic piece hole; a circular elastic soft rubber film sheet is clamped and pressed between the central left circular plastic expanding diameter sheet and the central right circular plastic clamping sheet; the diameter contact type bearing area of the central left circular plastic diameter expanding piece and the circular elastic soft rubber film piece is expanded, so that the middle position of the circular elastic soft rubber film piece is no longer weak in a negative pressure state, and the overall elastic tension is assisted to be balanced.

Description

Technical Field

[0001] This utility model relates to a detection component for a wall-hung gas water heater, and more particularly to a wind pressure sensor for a wall-hung gas water heater. Background Technology

[0002] Chinese Patent Publication No. CN206628416U discloses a vertically moving wind pressure switch, including a left shell (1) and a right shell (2); an elastic diaphragm (3) is sandwiched between the left shell (1) and the right shell (2), the elastic diaphragm (3) divides the left shell (1) and the right shell (2) into a negative pressure chamber (4) and a positive pressure chamber (5), the negative pressure chamber (4) is located in the right shell (2) and the positive pressure chamber (5) is located in the left shell (1); both the left shell (1) and the right shell (2) are provided with air duct connectors (6); the left... The shell (1) is provided with at least two-legged metal springs (11), the left and right ends of which are fixed to the inner wall of the left shell (1); both ends of the metal springs (11) are bent into an arc-shaped recess (110); a connector (12) is connected in the middle of the metal springs (11), and the connector (12) is connected to the elastic diaphragm (3) in the middle; a magnet (7) is fixed in the middle of the elastic diaphragm (3) on the surface of the negative pressure chamber (4); a Hall sensor (8) is fixed in the middle of the right shell (2). The left shell (1) is provided with three-legged metal springs (11), the three ends of which are fixed to the inner wall of the left shell (1), and the thin sheet of each end segment is bent into an arc-shaped recess (110).

[0003] The above structure is of the same type as the product in this application. In China, due to the large temperature difference between winter, autumn, and summer in the north, the wall-mounted gas water heater operates continuously for a long time in winter due to the extreme cold. The elastic diaphragm (3) remains under negative pressure for an extended period, causing it to shift towards the negative pressure chamber side for an extended time. The elastic diaphragm (3) will freeze hard. When the wall-mounted gas water heater is temporarily shut down, it loses its original flexibility, making it difficult for the elastic diaphragm (3) to return to its original position, leading to inaccurate detection. In summer, the elastic diaphragm (3) becomes more flexible due to the heat. During frequent use, after repeated negative pressure stretching and reset, the elasticity of the elastic diaphragm (3) is no longer as good as when it was new. There will be some loosening in the middle, and the middle position is the most obvious loosening. After loosening, the elastic diaphragm (3) is stretched by wind pressure. However, under the same wind pressure, the swing amplitude of the metal spring (11) becomes smaller, and the distance between the magnet (7) and the Hall sensor (8) becomes farther. The internal microelectronic magnetic switch of the Hall sensor (8) does not conduct due to insufficient magnetic force, and cannot start the signal power supply, resulting in inaccurate detection.

[0004] The above-mentioned current product uses a three-legged metal spring (11). The three-legged metal spring (11) results in excessive hardness, requiring a large negative pressure to pull it, making the detection inflexible and lacking in flexibility. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a wind pressure sensor for a wall-mounted gas water heater with a reasonable structural design, a circular elastic soft rubber diaphragm sheet with balanced overall circumferential stretching and resetting, and an auxiliary circular elastic soft rubber diaphragm sheet resetting. Even after many negative pressure stretching and resetting cycles, the middle position of the circular elastic soft rubber diaphragm sheet will not be so loose and weak.

[0006] The solution to the above technical problem is as follows:

[0007] A wind pressure sensor for a wall-mounted gas water heater includes a left shell cover, a right shell cover, a stainless steel elastic strip, a circular elastic soft rubber film, and a magnetic Hall sensor. A sensor mounting recess is provided in the middle of the outer side wall of the left shell cover, and a magnetic Hall sensor is fixed at the bottom of the sensor mounting recess. The circular elastic soft rubber film is clamped and sealed between the left and right shell covers, and the interior of the left and right shell covers is separated by the circular elastic soft rubber film, forming a negative pressure chamber inside the left shell cover and a positive pressure chamber inside the right shell cover. A left wind pressure short pipe is connected to the outer side wall of the left shell cover and to the negative pressure chamber; a right wind pressure short pipe is connected to the outer side wall of the right shell cover and to the positive pressure chamber. The sensor also includes a boss, a screw, a magnetic ring, a central left circular plastic clip, a central left circular plastic enlarged diameter clip, and a central right circular plastic clip.

[0008] The boss is located on the edge of the positive pressure chamber, and the root of the elastic strip is fixedly connected to the boss. The elastic strip is arranged radially relative to the positive pressure chamber. A spring hole is opened in the middle of the end of the elastic strip, and the spring hole is located at the center of the positive pressure chamber.

[0009] The magnetic ring, the central left circular plastic clip, and the central left circular plastic enlarged diameter sheet are sequentially stacked in the middle of one side of the circular elastic soft rubber film sheet. The magnetic ring, the central left circular plastic clip, and the central left circular plastic enlarged diameter sheet are located in the wind pressure negative pressure chamber.

[0010] The central right circular plastic clip is fixedly connected to the middle of the other side of the circular elastic soft rubber film. The central right circular plastic clip is located in the wind pressure positive pressure chamber, and the middle of the central right circular plastic clip is connected and fixed to the spring hole.

[0011] A circular elastic soft plastic film is clamped between the central left circular plastic enlarged diameter piece and the central right circular plastic clip;

[0012] The screw is inserted through the magnetic ring, the central left circular plastic clip, the central left circular plastic enlarged diameter plate, the circular elastic soft rubber film, and the central right circular plastic clip to form an integral fixed connection.

[0013] The beneficial effects of the wind pressure sensor for a wall-mounted gas water heater of this utility model are as follows: 1. The center left circular plastic enlarged diameter piece of this product is located in the middle of the circular elastic soft rubber film. During the negative pressure stretching (pulling) process, the center left circular plastic enlarged diameter piece increases the contact area with the diameter of the circular elastic soft rubber film, increasing the pressure-bearing / supporting area of ​​the weak middle position. This makes the middle position of the circular elastic soft rubber film less weak under negative pressure, thus helping to balance the overall elastic tension of the circular elastic soft rubber film. This makes the overall elastic tension of the circular elastic soft rubber film under negative pressure more balanced, and the negative pressure stretching of the circular elastic soft rubber film is more balanced. After repeated repositioning, the central position will not be so loose and weak. The central left circular plastic enlarged diameter piece and the circular elastic soft rubber film will have consistent circumferential tension, resulting in overall tension balance. 2. The central left circular plastic enlarged diameter piece can prevent the circular elastic soft rubber film from contacting the bottom wall of the wind pressure negative pressure chamber, thus acting as a separator. This prevents condensation in the wind pressure negative pressure chamber from sticking to the circular elastic soft rubber film, preventing the inability to reposition when the exhaust fan is not working properly, and preventing the wall-mounted gas water heater from failing to reposition if it stops midway. 3. During repositioning, the central left circular plastic enlarged diameter piece can assist the circular elastic soft rubber film in centering the repositioning. Attached Figure Description

[0014] Figure 1 , Figure 2 , Figure 3 This is a perspective view of the product of this utility model;

[0015] Figure 4 This is a front view of the product of this utility model;

[0016] Figure 5 This is a rear view of the product of this utility model;

[0017] Figure 6 This is a top view of the product of this utility model;

[0018] Figure 7 This is a bottom view of the product of this utility model;

[0019] Figure 8 This is a right view of the product of this utility model;

[0020] Figure 9 This is a left view of the product of this utility model;

[0021] Figure 10 This is a front view of the product of this utility model;

[0022] Figure 11 for Figure 10 A cross-sectional view along the AA direction, which is also a schematic diagram in a non-working state;

[0023] Figure 12 This is a cross-sectional view of the product of this utility model, and also a schematic diagram under negative pressure working conditions, with the magnetic ring close to the magnetic Hall sensor;

[0024] Figure 13 , Figure 14 This is an exploded view of the left and right shell covers of the product in their open states.

[0025] Figure 15 , Figure 16 This is a perspective view of the right shell cover of the product of this utility model;

[0026] Figure 17 This is an exploded view of the product of this utility model;

[0027] Figure 18 This is a perspective view of the circular plastic clip at the center of the product of this utility model.

[0028] Left cover 1, sensor mounting recess 101, circular left concave cavity 102, circular convex ring 103, positioning and reinforcing hole 104, positioning convex nail 105, wind pressure negative pressure chamber 1A, left wind pressure short pipe 1B; Right cover 2, circular right concave cavity 201, circular groove 202, positioning and reinforcing column 203, positioning nail hole 204, wind pressure positive pressure chamber 2A, right wind pressure short pipe 2B, elastic thin strip 3, spring hole 31, circular elastic soft strip 4. Adhesive film sheet, 41. Diaphragm through hole, 42. Thickened diaphragm ring, 5. Magnetic Hall sensor, 51. Sealant, 6. Boss, 61. Clamping part, 62. Screw assembly, 63. Screw, 7. Magnetic ring, 8. Ring through hole, 81. Center left circular plastic clip, 9. Left clip through hole, 91. Center left circular plastic enlarged diameter clip, 10. Left diameter clip through hole, 10A. Center right circular plastic clip, 11. Right clip hole, 11A. Protrusion, 11B. Detailed Implementation

[0029] like Figures 1 to 18The following describes a wind pressure sensor for a wall-hung gas water heater: It includes a left cover 1, a right cover 2, a stainless steel elastic strip 3, a circular elastic soft rubber film 4, and a magnetic Hall sensor 5. The sensor is flat in the thickness direction, circular on the outer perimeter, and has a diameter of 65 mm to 75 mm. A sensor mounting recess 101 is provided in the middle of the outer wall of the left cover 1. The sensor mounting recess 101 is rectangular and has a depth of 8 mm to 2 cm. A magnetic Hall sensor 5 is fixed to the bottom of the sensor mounting recess 101. The magnetic Hall sensor 5 is placed in the bottom of the sensor mounting recess 101, and then sealant 51 is poured into the sensor mounting recess 101 to cover and wrap the magnetic Hall sensor 5. After the sealant 51 solidifies, the magnetic Hall sensor 5 is fixed and waterproof. When the wind pressure sensor is installed in the wall-hung gas water heater, it will not shift, shake, or sway even when there is vibration, exhibiting good shock resistance, achieving zero deviation, and accurate detection. The left cover 1 and right cover 2 are located between... The circular elastic soft rubber film 4 is clamped and sealed around its periphery. The interior between the left shell cover 1 and the right shell cover 2 is separated by the circular elastic soft rubber film 4, forming a negative pressure chamber 1A inside the left shell cover 1 and a positive pressure chamber 2A inside the right shell cover 2. The negative pressure chamber 1A and the positive pressure chamber 2A are also perfectly circular and fit the circular elastic soft rubber film 4. The outer wall of the left shell cover 1 is integrally connected to the left air pressure short pipe 1B and connected to the air pressure negative pressure chamber 1A. The outer wall of the right shell cover 2 is connected to... The integrated unit has a right-side air pressure short pipe 2B connected to the ventilation pressure positive pressure chamber 2A. The right-side air pressure short pipe 2B is used for external communication. The main technical improvement of this product is that the air pressure sensor of the wall-hung gas water heater also includes a boss 6, a screw 7, a magnetic ring 8, a central left circular plastic clip 9, a central left circular plastic enlarged diameter clip 10, and a central right circular plastic clip 11. The screw 7 and the magnetic ring 8 are circular. The boss 6 is mainly used to raise and fix the elastic thin strip 3, so that the elastic thin strip 3 is arranged flat.

[0030] The boss 6 is located on the edge of the positive pressure chamber 2A. The height of the boss 6 is lower than the depth of the positive pressure chamber 2A. The root of the elastic thin strip 3 is fixedly connected to the boss 6. The elastic thin strip 3 is arranged radially relative to the positive pressure chamber 2A. The length of the elastic thin strip 3 is slightly greater than or equal to the radius of the positive pressure chamber 2A. A spring hole 31 is opened in the middle of the end of the elastic thin strip 3. The spring hole 31 is located at the center of the positive pressure chamber 2A, so that the screw 7, magnetic ring 8, central left circular plastic clip 9, central left circular plastic enlarged diameter piece 10, and central right circular plastic clip 11 are centrally aligned.

[0031] The magnetic ring 8, the central left circular plastic clip 9, and the central left circular plastic enlarged diameter piece 10 are stacked sequentially in the middle of one side (left side) of the circular elastic soft rubber film 4, which is also the magnetic ring 8, the central left circular plastic clip 9, and the central left circular plastic enlarged diameter piece 10 located on one side of the wind pressure negative pressure chamber 1A.

[0032] The central right circular plastic clip 11 is fixedly connected to the middle of the other side (right side) of the circular elastic soft film 4. The central right circular plastic clip 11 is located on one side of the wind pressure positive pressure chamber 2A. The middle of the central right circular plastic clip 11 is connected and fixed to the spring hole 31.

[0033] The center point of the screw 7, magnetic ring 8, center left circular plastic clip 9, center left circular plastic enlarged diameter clip 10, and center right circular plastic clip 11 is aligned with the center point of the circular elastic soft rubber film 4, and is centrally positioned so that the center point and center of gravity of the screw 7, magnetic ring 8, center left circular plastic clip 9, center left circular plastic enlarged diameter clip 10, center right circular plastic clip 11, and circular elastic soft rubber film 4 are aligned when they swing left and right or are pulled.

[0034] A circular elastic soft rubber film 4 is sandwiched between the central left circular plastic enlarged diameter sheet 10 and the central right circular plastic clip 11, and the circular elastic soft rubber film 4 is arranged horizontally. The surface of the central left circular plastic enlarged diameter sheet 10 is frosted to prevent adhesion to the circular elastic soft rubber film 4 and to prevent adhesion when there is moisture.

[0035] The screw 7 is connected in one piece to the magnetic ring 8, the central left circular plastic clip 9, the central left circular plastic enlarged diameter piece 10, the circular elastic soft film 4, and the central right circular plastic clip 11; that is, the screw 7 passes through the center of the magnetic ring 8, the central left circular plastic clip 9, the central left circular plastic enlarged diameter piece 10, and the circular elastic soft film 4 in sequence and is screwed and fastened to the center point of the central right circular plastic clip 11.

[0036] During installation, the left air pressure short pipe 1B is connected to the exhaust fan of the wall-mounted gas water heater via a flexible air pressure hose to detect the negative pressure status of the exhaust. During use, the air in the negative pressure chamber 1A is drawn in by the exhaust fan of the wall-mounted gas water heater, creating negative pressure. Conversely, the positive pressure chamber 2A receives air through the right air pressure short pipe 2B, creating positive pressure. When the exhaust fan of the wall-mounted gas water heater draws air in, the air in the negative pressure chamber 1A is negatively pressurized. The circular elastic soft rubber diaphragm 4 is pulled towards the negative pressure chamber 1A by the negative pressure force, causing the magnetic ring 8 to approach the magnetic Hall sensor 5. The internal microelectronic magnetic switch of the magnetic Hall sensor 5 is attracted by the magnetic field and activates the start signal. The source is then transmitted to the controller of the wall-hung gas water heater, indicating that the exhaust fan is working smoothly to control the ignition of the gas and subsequent operation. If the exhaust fan is working, and the air pressure is insufficient to pull the circular elastic soft rubber diaphragm 4 towards the negative pressure chamber 1A or the pulling force is too weak, the magnetic ring 8 will not be close to the magnetic Hall sensor 5 or the magnetic ring 8 will be far from the magnetic Hall sensor 5. The internal microelectronic magnetic switch of the magnetic Hall sensor 5 will not be turned on, and the signal power cannot be started. The controller of the wall-hung gas water heater will not receive the start signal power, indicating that the exhaust fan is not working smoothly and does not meet the start conditions for ignition and subsequent operation control.

[0037] The purpose of setting the circular elastic soft rubber film 4 is to ensure that the circumference is stretched and balanced when pulled by wind pressure.

[0038] The purpose of setting up the circular screw 7, the circular magnetic ring 8, the central left circular plastic clip 9, the central left circular plastic enlarged diameter clip 10, and the central right circular plastic clip 11 is to cooperate with the overall stretching and resetting balance of the circular elastic soft rubber film 4.

[0039] The diameters of the central left circular plastic clip 9 and the central right circular plastic clip 11 are the same, and they have a certain area for clamping the circular elastic soft rubber film 4.

[0040] The central left circular plastic enlarged diameter piece 10 of this product is located in the middle of the circular elastic soft rubber film 4. During the negative pressure stretching (pulling) process, the central left circular plastic enlarged diameter piece 10 increases the contact area with the circular elastic soft rubber film 4, increasing the pressure-bearing / supporting area of ​​the weak central position. This makes the central position of the circular elastic soft rubber film 4 less weak under negative pressure, thus helping to balance the overall elastic tension of the circular elastic soft rubber film 4. This makes the overall negative pressure elastic tension of the circular elastic soft rubber film 4 more balanced. After the circular elastic soft rubber film 4 has been stretched and reset many times under negative pressure, the central position will not be so loose and weak. The circumferential stretching force of the contact area between the central left circular plastic enlarged diameter piece 10 and the circular elastic soft rubber film 4 is consistent, and the overall force stretching is balanced.

[0041] In winter, the wall-hung gas water heater will operate continuously for a long time, and the circular elastic soft rubber diaphragm 4 will be in a negative pressure state for a long time. The circular elastic soft rubber diaphragm 4 will be continuously deviated towards the wind pressure negative pressure chamber 1A for a long time. The central left circular plastic enlarged diameter piece 10 can prevent the circular elastic soft rubber diaphragm 4 from contacting the bottom wall of the wind pressure negative pressure chamber 1A, and play a separating role. This prevents the circular elastic soft rubber diaphragm 4 from sticking when there is condensation in the wind pressure negative pressure chamber 1A, and prevents it from failing to reset when the exhaust fan is not smooth. It also prevents the wall-hung gas water heater from failing to reset when it stops midway. During reset, the central left circular plastic enlarged diameter piece 10 can help the circular elastic soft rubber diaphragm 4 to reset and center.

[0042] The above structure is reasonably designed, operates stably, and has a long service life.

[0043] The elastic thin strip 3 is a single piece, which can be pulled under low negative pressure, making it flexible and easy to test.

[0044] This product has a simple structure, accurate detection, low cost, and is easy to assemble and adjust.

[0045] Preferably, the materials of the central left circular plastic clip 9 and the central left circular plastic enlarged diameter piece 10 are different. The central left circular plastic clip 9 is made of inelastic plastic material; while the central left circular plastic enlarged diameter piece 10 is relatively thin and light. The central left circular plastic enlarged diameter piece 10 is made of a material with restoring elasticity. After stretching, it can assist the circular elastic soft rubber film 4 in restoring, reduce the restoring load, and improve the service life.

[0046] The magnetic ring 8 has a ring through hole 81 in the middle; the central left circular plastic clip 9 has a left clip through hole 91 in the middle; the central left circular plastic enlarged diameter clip 10 has a left diameter clip through hole 10A in the middle; the circular elastic soft rubber film 4 has a film through hole 41 in the middle; and the central right circular plastic clip 11 has a right clip hole 11A in the middle.

[0047] The screw 7 passes through the annular through hole 81, the left clamping plate through hole 91, the left diameter plate through hole 10A, the diaphragm through hole 41, and the right clamping plate hole 11A. The magnetic ring 8, the central left circular plastic clamping plate 9, the central left circular plastic enlarged diameter plate 10, the circular elastic soft rubber film 4, and the central right circular plastic clamping plate 11 are stacked and fixed together in sequence. This structure facilitates the insertion of the screw 7. The annular through hole 81, the left clamping plate through hole 91, the left diameter plate through hole 10A, the diaphragm through hole 41, and the right clamping plate hole 11A are just enough to allow the screw 7 to pass through. The central left circular plastic clamping plate 9, the central left circular plastic enlarged diameter plate 10, and the central right circular plastic clamping plate 11 clamp the circular elastic soft rubber film 4 to seal the diaphragm through hole 41, and utilize the elastic properties of the circular elastic soft rubber film 4 to clamp and seal.

[0048] A protrusion 11B extends from the middle of the outer wall of the central right circular plastic clip 11. The protrusion 11B passes through the spring clip hole 31 and is clamped and fixed to the elastic thin strip 3. The protrusion 11B is pressed into the spring clip hole 31 by pressure machinery to fix it at one time, so that the protrusion 11B and the elastic thin strip 3 are clamped and fixed, and the connection is firm.

[0049] The left shell cover 1 has a circular left concave cavity 102 inside, and the left wind pressure short pipe 1B is connected to the circular left concave cavity 102; the right shell cover 2 has a circular right concave cavity 201 inside, and the right wind pressure short pipe 2B is connected to the circular right concave cavity 201; after the circular elastic soft rubber film 4 is clamped and sealed between the left shell cover 1 and the right shell cover 2, the circular left concave cavity 102 inside the left shell cover 1 becomes a wind pressure negative pressure chamber 1A, and the circular right concave cavity 201 inside the right shell cover 2 becomes a wind pressure positive pressure chamber 2A; after reasonably setting the internal structure of the left shell cover 1 and the internal structure of the right shell cover 2, and installing the circular elastic soft rubber film 4, wind pressure negative pressure chamber 1A and wind pressure positive pressure chamber 2A are formed.

[0050] The boss 6 includes a protrusion 61, a clamping member 62, and a screw assembly 63. The protrusion 61 and the clamping member 62 are square in shape. The protrusion 61 extends from the edge of the right concave cavity 201 and is integrally formed with the right shell cover 2. The root of the elastic thin strip 3 is clamped between the protrusion 61 and the clamping member 62. The screw assembly 63 passes through the clamping member 62 and is tightened and fixed to the protrusion 61. A spring swing space is formed between the elastic thin strip 3 and the right concave cavity 201, which is reserved for negative pressure and positive pressure swing space in the working state. The above structure is simple, easy to assemble, and easy to fix.

[0051] The inner opening of the left air pressure short pipe 1B is located at the lowest position of the circular left concave cavity 102. The left air pressure short pipe 1B is vertically arranged so that it can naturally leak water and keep the inside dry in case of internal temperature difference and moisture. The inner opening of the right air pressure short pipe is located at the lowest position of the circular right concave cavity 201. The right air pressure short pipe 2B is vertically arranged so that it can naturally leak water and keep the inside dry in case of internal temperature difference and moisture.

[0052] The right shell cover 2 has a circular groove 202 formed integrally with the connecting section wall near its edge; the left shell cover 1 has a circular protruding ring 103 extending from its connecting section wall near its edge, which fits into the circular groove 202; the circular elastic soft film sheet 4 has a thickened film ring 42 extending from its edge, which fits into the circular groove 202; the thickened film ring 42 is embedded in the circular groove 202; the left shell cover... After the left and right shell covers 1 and 2 are connected, the convex ring 103 is embedded in the circular groove 202 to clamp the thickened membrane ring 42. Thus, the left and right shell covers 1 and 2 clamp and seal the edge of the circular elastic soft rubber film 4. The circular elastic soft rubber film 4 has a large sealing connection area with the shell cover section, and its sealing performance is good. When the circular elastic soft rubber film 4 is stretched under negative pressure, its circumferential tension is balanced, and it will not loosen or come out. The installation and positioning between the left and right shell covers 1 and 2 is quick and will not be misaligned.

[0053] The left shell cover 1 has a plurality of positioning and reinforcing holes 104 distributed in a ring shape near the edge of the connecting section wall, generally four to ten, and the plurality of positioning and reinforcing holes 104 are located on the outer periphery of the circular convex ring 103; the right shell cover 2 has a plurality of positioning and reinforcing posts 203 distributed in a ring shape near the edge of the connecting section wall, the number of positioning and reinforcing posts 203 being the same as the number of positioning and reinforcing holes 104, the plurality of positioning and reinforcing posts 203 being located on the outer periphery of the circular groove 202, and the plurality of positioning and reinforcing posts 203 being adapted to correspond to the plurality of positioning and reinforcing holes 104; after the left shell cover 1 and the right shell cover 2 are connected, the plurality of positioning and reinforcing posts 203 are inserted into the plurality of positioning and reinforcing holes 104 for fixed connection, for alignment and for pre-fixing after installation. After fixing, the circumferential gap between the left shell cover 1 and the right shell cover 2 is welded and sealed by plastic ultrasonic welding machinery to improve sealing performance.

[0054] The left shell cover 1 has a plurality of positioning protrusions 105 distributed in a ring-shaped manner on the connecting section wall near the edge; the plurality of positioning protrusions 105 are located on the outer periphery of the circular protrusion ring 103; the right shell cover 2 has a plurality of positioning nail holes 204 distributed in a ring-shaped manner on the connecting section wall near the edge, the number of positioning nail holes 204 is the same as the number of positioning protrusions 105 and they are adapted to correspond to each other, the plurality of positioning nail holes 204 are located on the outer periphery of the circular groove 202;

[0055] The left shell cover 1 is integrally injection molded; the right shell cover 2 is integrally injection molded.

[0056] The elastic thin strip 3 has a thickness of 0.2 mm to 0.3 mm, a length of 28 mm to 35 mm, and a width of 5 mm to 10 mm. Preferably, the elastic thin strip 3 has a thickness of 0.3 mm, a length of 32 mm, and a width of 8 mm. A suitable size for the elastic thin strip 3 is set.

[0057] The magnetic ring 8 is integrally molded; the central left circular plastic clip 9 is integrally injection molded; the central left circular plastic enlarged diameter piece 10 is integrally injection molded; the central right circular plastic clip 11 is integrally injection molded; the circular elastic soft rubber film 4 is integrally injection molded; the circular elastic soft rubber film 4 is made of silicone material, and is manufactured using suitable materials, resulting in good elasticity and good tensile recovery ability.

[0058] The thickness of the magnetic ring 8 is 1 mm to 2 mm and the diameter is 5 mm to 7 mm; preferably, the thickness of the magnetic ring 8 is 1.5 mm and the diameter is 6 mm, and a suitable size of magnetic ring 8 is set.

[0059] The thickness of the central left circular plastic clip 9 is 0.8 mm to 1.5 mm and the diameter is 15 mm to 20 mm; preferably, the thickness of the central left circular plastic clip 9 is 1.2 mm and the diameter is 17 mm, setting a suitable size for the central left circular plastic clip 9.

[0060] The thickness of the central right circular plastic clip 11 is 0.8 mm to 1.5 mm and the diameter is 15 mm to 20 mm; preferably, the thickness of the central right circular plastic clip 11 is 1.2 mm and the diameter is 17 mm, and a suitable size of the central right circular plastic clip 11 is set.

[0061] The thickness of the central left circular plastic enlarged diameter sheet 10 is 0.3 mm to 0.5 mm, and the diameter is 25 mm to 30 mm; preferably, the thickness of the central left circular plastic enlarged diameter sheet 10 is 0.5 mm, and the diameter is 30 mm; a suitable size for the central left circular plastic enlarged diameter sheet 10 is set.

[0062] The circular elastic soft rubber film 4 has a thickness of 0.2 mm to 0.3 mm and a diameter of 60 mm to 70 mm, preferably 0.3 mm and 65 mm, with a suitable size.

Claims

1. A wind pressure sensor for a wall-mounted gas water heater, comprising a left shell cover, a right shell cover, a stainless steel elastic strip, a circular elastic soft rubber film, and a magnetic Hall sensor; a sensor mounting recess is provided in the middle of the outer side wall of the left shell cover, and a magnetic Hall sensor is fixed at the bottom of the sensor mounting recess; the circular elastic soft rubber film is clamped and sealed between the left and right shell covers, and the interior of the left and right shell covers is separated by the circular elastic soft rubber film, forming a negative pressure chamber inside the left shell cover and a positive pressure chamber inside the right shell cover; a left wind pressure short pipe is connected to the outer side wall of the left shell cover and connected to the negative pressure chamber; a right wind pressure short pipe is connected to the outer side wall of the right shell cover and connected to the positive pressure chamber; characterized in that: It also includes a boss, a screw, a magnetic ring, a central left circular plastic clip, a central left circular plastic enlarged diameter clip, and a central right circular plastic clip; The boss is located on the edge of the positive pressure chamber, and the root of the elastic strip is fixedly connected to the boss. The elastic strip is arranged radially relative to the positive pressure chamber. A spring hole is opened in the middle of the end of the elastic strip, and the spring hole is located at the center of the positive pressure chamber. The magnetic ring, the central left circular plastic clip, and the central left circular plastic enlarged diameter plate are sequentially stacked in the middle of one side of the circular elastic soft rubber film. The magnetic ring, the central left circular plastic clip, and the central left circular plastic enlarged diameter plate are located on one side of the wind pressure negative pressure chamber. The central right circular plastic clip is fixedly connected to the middle of the other side of the circular elastic soft rubber film. The central right circular plastic clip is located in the wind pressure positive pressure chamber, and the middle of the central right circular plastic clip is connected and fixed to the spring hole. A circular elastic soft plastic film is clamped between the central left circular plastic enlarged diameter piece and the central right circular plastic clip; The screw is inserted through the magnetic ring, the central left circular plastic clip, the central left circular plastic enlarged diameter plate, the circular elastic soft rubber film, and the central right circular plastic clip to form an integral fixed connection.

2. The wind pressure sensor for a wall-mounted gas water heater according to claim 1, characterized in that: The magnetic ring has a through hole in the middle; the central left circular plastic clip has a left clip through hole in the middle. The center left circular plastic enlarged diameter piece has a left diameter piece through hole in the middle; the center circular elastic soft rubber film has a film through hole in the middle; the center right circular plastic clip has a right clip hole in the middle. The screw passes through the annular through hole, the left clamping plate through hole, the left diameter plate through hole, the diaphragm through hole, and the right clamping plate hole, and sequentially stacks and fixes the magnetic ring, the central left circular plastic clamping plate, the central left circular plastic enlarged diameter plate, the circular elastic soft rubber film, and the central right circular plastic clamping plate together.

3. The wind pressure sensor for a wall-mounted gas water heater according to claim 1, characterized in that: A protruding post extends from the middle of the outer wall of the central right circular plastic clip, and the protruding post passes through the spring clip hole and is clamped and fixed to the elastic thin strip.

4. The wind pressure sensor for a wall-hung gas water heater according to claim 1, characterized in that: The left shell cover has a circular left concave cavity inside, and the left air pressure short pipe is connected to the circular left concave cavity; the right shell cover has a circular right concave cavity inside, and the right air pressure short pipe is connected to the circular right concave cavity; after the circular elastic soft rubber film is clamped and sealed between the left shell cover and the right shell cover, the circular left concave cavity inside the left shell cover becomes a negative air pressure chamber, and the circular right concave cavity inside the right shell cover becomes a positive air pressure chamber.

5. The wind pressure sensor for a wall-hung gas water heater according to claim 4, characterized in that: The boss includes a protrusion, a clamping member, and a screw assembly. The protrusion extends from the edge of the right concave cavity of a perfect circle. The root of the elastic thin strip is clamped between the protrusion and the clamping member. The screw assembly passes through the clamping member and is fixedly connected to the protrusion. A spring swing space is formed between the elastic thin strip and the right concave cavity of the perfect circle.

6. The wind pressure sensor for a wall-hung gas water heater according to claim 4, characterized in that: The inner opening of the left air pressure short pipe is located at the lowest position of the circular left concave cavity; the inner opening of the right air pressure short pipe is located at the lowest position of the circular right concave cavity; the left air pressure short pipe is arranged vertically; the right air pressure short pipe is arranged vertically.

7. A wind pressure sensor for a wall-mounted gas water heater according to any one of claims 1 to 6, characterized in that: A circular groove is formed on the connecting section wall near the edge of the right shell cover; a circular convex ring extends from the connecting section wall near the edge of the left shell cover, and the convex ring is adapted to the circular groove; a thickened film ring extends from the edge of the circular elastic soft rubber film, and the thickened film ring is adapted to the circular groove; the thickened film ring is embedded in the circular groove; after the left shell cover and the right shell cover are connected, the circular convex ring is embedded in the circular groove to clamp and press the thickened film ring, thereby clamping and sealing the edge of the circular elastic soft rubber film between the left shell cover and the right shell cover.

8. The wind pressure sensor for a wall-mounted gas water heater according to claim 7, characterized in that: The left shell cover has a number of positioning and reinforcing holes distributed in a ring shape near the edge of the connecting section wall, and the positioning and reinforcing holes are located on the outer periphery of the circular convex ring; the right shell cover has a number of positioning and reinforcing posts distributed in a ring shape near the edge of the connecting section wall, and the positioning and reinforcing posts are located on the outer periphery of the circular groove, and the positioning and reinforcing posts are adapted to correspond to the positioning and reinforcing holes; after the left shell cover and the right shell cover are connected, the positioning and reinforcing posts are inserted into the positioning and reinforcing holes for fixed connection.

9. The wind pressure sensor for a wall-hung gas water heater according to claim 8, characterized in that: The left shell cover is integrally injection molded; the right shell cover is integrally injection molded; the gap between the left shell cover and the right shell cover is welded and sealed.

10. A wind pressure sensor for a wall-mounted gas water heater according to any one of claims 1 to 6, characterized in that: The elastic thin strip has a thickness of 0.2 mm to 0.3 mm, a length of 28 mm to 35 mm, and a width of 5 mm to 10 mm. The magnetic ring is integrally formed; The central left circular plastic clip is integrally injection molded; The central left circular plastic enlarged diameter sheet is integrally injection molded; The central right circular plastic clip is integrally injection molded; Circular elastic soft rubber film sheet integrally injection molded; The circular, flexible, soft silicone film is made of silicone material. The thickness of the magnetic ring is 1 mm to 2 mm, and the diameter is 5 mm to 7 mm. The thickness of the central left circular plastic clip is 0.8 mm to 1.5 mm, and the diameter is 15 mm to 20 mm; The thickness of the central right circular plastic clip is 0.8 mm to 1.5 mm, and the diameter is 15 mm to 20 mm; The thickness of the central left circular plastic enlarged diameter sheet is 0.3 mm to 0.5 mm, and the diameter is 25 mm to 30 mm; The circular elastic soft rubber film has a thickness of 0.2 mm to 0.3 mm and a diameter of 60 mm to 70 mm.

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