CN103646821A - Magnetic reed pipe conductive wind-pressure switch - Google Patents

Abstract

The invention discloses a magnetic reed pipe conductive wind-pressure switch which includes a left casing and a right casing. An elastic membrane sheet is sandwiched between the left casing and the right casing. The elastic membrane sheet enables an internal space of the left casing and the right casing to be separated and divides the internal space of the left casing and the right casing into a positive-pressure chamber and a negative-pressure chamber. A pair of fixed clamping pieces is clamped on the elastic membrane sheet. A spring column is arranged on each fixed clamping piece, wherein a magnetic ring is sleeved at the periphery of the spring column of the fixed clamping sheet arranged in the negative-pressure chamber and the magnetic ring is fixed on the fixed clamping sheet of the negative-pressure chamber; an adjustment screw rod is arranged at each of the middle positions of the left casing and the right casing and springs are sleeved between the adjustment screw rods and the spring columns; and a position of the outer surface of the right casing, close to the central position, is provided with a reed-pipe switch which is in the same horizontal direction with the magnetic ring. Compared with the prior art, the magnetic conductive wind-pressure switch has the advantages of being simple in structure, low in cost, precise in measurement, fast in power-on/power-off and great in effect and the like.

Description

A wind pressure switch with magnetic suction dry reed switch

technical field

The invention relates to a wind pressure switch, in particular to a conductive wind pressure switch of a magnetic reed switch.

Background technique

The wind pressure switch is a detection device, which is generally used on machines that require wind pressure, such as wall-hung boiler water heaters, gas boilers, and wall-hung boiler heating equipment that use gas-fired electrical products. It is required that the negative pressure cavity of the wind pressure switch communicates with the air supply channel in the fan worm gear casing, and the diaphragm of the wind pressure switch is sent out by strong wind to drive the conductive electrode to connect or use the magnetic suction conductive electrode to connect the power to start other electrical appliances. Parts to complete the product to work properly. The important function of the air pressure switch is to use its on-off capability to control the on-off of the entire set of electrical products, so as to ensure that the equipment can close the gas channel in time when the exhaust air is not smooth, so as to ensure that the gas does not leak out, thereby ensuring the safety of gas products. Work. Since the air pressure switch is usually used in an environment where the temperature alternates between hot and cold, the inside of the air pressure switch is a closed space. If air is added to the product, water will be generated inside the product due to the temperature difference. If the inside of the air pressure switch Water will affect the use effect of the product, the spring in the inner cavity will rust, and the diaphragm is easy to age.

Contents of the invention

The technical problem to be solved by the present invention is to provide a magnetic reed switch conductive air pressure switch that is safe, reliable, simple in structure, and capable of quickly turning on or off the power supply.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A conductive wind pressure switch of a magnetic suction reed switch, the wind pressure switch is composed of a left shell (2) and a right shell (3), and an elastic film is sandwiched between the left shell (2) and the right shell (3) sheet (4), the elastic diaphragm (4) isolates the internal space of the left and right shells, and divides the internal space of the left and right shells into a positive pressure chamber (5) and a negative pressure chamber (6); the elastic diaphragm (4) The upper clip is equipped with a pair of fixed clips (7); the fixed clip (7) is provided with a spring column (8), and the spring of the fixed clip (7) in the negative pressure chamber (6) A magnetic ring (9) is set around the periphery of the column (8), and the magnetic ring (9) is fixed on the fixed clip (7) of the negative pressure chamber (6); the left shell (2) and the right shell ( 3) There is an adjusting screw (10) in the middle position, and a spring (11) is set between the adjusting screw (10) and the spring column (8); the outer surface of the right shell (3) is provided with a stem near the center. Reed switch (12), dry reed switch (12) and magnetic ring (9) are in the same horizontal direction.

In the above technical solution, a leak hole (13) is provided at the lower ends of the left shell (2) and the right shell (3) of the wind pressure switch, and a sealing cover is provided on the leak hole (13).

In the above technical solution, the air pressure switch left shell (2) and the bottom of the right shell (3) are equipped with air pipe joints (14), wherein the air pipe joints (14) at the bottom of the right shell (3) pass through the air pipe It is connected to the air duct of the fan.

The present invention has the following advantages:

1. There are adjustment springs in the middle of the positive pressure chamber and the negative pressure chamber to clamp the elastic diaphragm in the middle. Because the fan power of the industrial gas equipment is different from that of the wall-hung boiler gas products at home, the strong The air exhaust requirements are also different. To be suitable for the air pressure switch of all gas products, there must be an adjustment device to adjust the internal pressure of the air pressure switch. This product is equipped with adjustment springs in the positive pressure chamber and negative pressure chamber, which can be adjusted according to the use of equipment ( Different products) can adjust the spring to the left or right to meet the power requirements of the fan; 2. After a long time of use, the spring may become less elastic after a long time. At this time, the springs on the left and right shells can be fine-tuned to achieve normal ventilation. 3. The magnetic ring is installed on the fixed clip of the elastic diaphragm to form the same horizontal line as the reed switch on the outer surface of the right shell. When the fan is started, the magnetic ring can be quickly and directly approached to the reed switch , turn on the reed switch to power, and start other machines; 4. Due to the influence of temperature difference, water will accumulate inside the product. Open the sealing cover of the leakage hole at any time, drain the water, ensure the positive and negative pressure inner cavity is dry, prolong the life of the product, and work more ideally; The diaphragm achieves equilibrium adsorption when the exhaust fan is working.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the sectional view under the working state of the embodiment of the present invention;

Fig. 2 is a cross-sectional view of an embodiment of the present invention in a non-working state;

Detailed ways

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

As shown in Fig. 1-Fig. 2, a magnetic reed switch conducts wind pressure switch. The wind pressure switch consists of a left shell 2 and a right shell 3, and an elastic Diaphragm 4, the elastic diaphragm 4 isolates the internal space of the left and right shells, and divides the internal space of the left and right shells into a positive pressure chamber 5 and a negative pressure chamber 6; Clip 7; the fixed clip 7 is provided with a spring column 8, wherein the outer periphery of the spring column 8 of the fixed clip 7 in the negative pressure chamber 6 is provided with a circle of magnetic ring 9, and the magnetic ring 9 is fixed at the negative pressure On the fixed clip 7 of the cavity 6; the middle position of the left shell 2 and the right shell 3 is provided with an adjusting screw 10, and a spring 11 is set between the adjusting screw 10 and the spring column 8; the right shell (3) A reed switch 12 is arranged on the outer surface close to the center, and the reed switch 12 is in the same horizontal direction as the magnetic ring 9; the left shell 2 and the lower end of the right shell 3 of the wind pressure switch are provided with a water leakage hole 13, which prevents water leakage. A sealing cover is provided on the hole 13; the air pressure switch left shell 2 and the bottom of the right shell 3 are provided with an air duct joint 14, wherein the air duct joint 14 at the bottom of the right shell 3 communicates with the air duct of the fan through the air duct .

The product of the present invention is installed on the upper end of the wall-hung furnace, and the air pipe joint 14 at the bottom of the right shell 3 is connected to the air duct of the wall-hung furnace fan through the exhaust pipe. On the fixed clip 7 of the elastic diaphragm 4 and form the same horizontal line with the reed switch 12 on the outer surface of the right shell, when the negative pressure chamber 6 of the right shell 3 generates suction, the magnetic ring 9 directly and quickly blows to the reed switch The switch 12 is close, and when the magnetic ring 9 is close to the reed switch 12, the conductive electrode of the reed switch 12 is closed to turn on the power supply, thereby starting the ignition of the combustion chamber of the gas product; in the middle of the positive pressure chamber 5 and the negative pressure chamber 6 Both are equipped with an adjustment spring 11 to press the elastic diaphragm 4 in the middle, so that the elastic diaphragm 4 is in the middle position between the positive and negative pressure chambers. The power is different, and the strong exhaust air requirements are also different. At this time, the pressure of the spring 11 can be adjusted through the adjustment end of the outer spring column 8 of the left and right shells of the knob to meet the pressure of the wind pressure required by all gas products, so as to achieve the pressure suitable for the fan. Power requirements to start the wind pressure switch; when the spring 11 is used for a long time, the elasticity may weaken after a long time. At this time, the negative pressure chamber during normal ventilation can be achieved by fine-tuning the rotating spring column 8 inward to increase the pressure of the spring 11 When there is a temperature difference during use, water will accumulate inside the product. The leak hole 13 opened at the lower end of the left shell 2 and right shell 3 of the air pressure switch 1 can be opened when the fan is not working. The sealing cover is used to drain the water, keep the positive and negative pressure cavity dry, prolong the life of the product, and work more ideally; the outer periphery of the spring column 8 in the negative pressure chamber 6 is provided with a ring of magnetic ring 9, and this ring of magnetic ring 9 The balance of the elastic diaphragm 4 can be maintained, the force is uniform, and the pressure measurement is accurate.

The above descriptions are only preferred implementations of the present invention, and the scope of protection of the present invention is not limited to the above-mentioned implementations. All technical solutions belonging to the principle of the present invention belong to the scope of protection of the present invention. For those skilled in the art, some improvements and modifications made without departing from the principles of the present invention should also be regarded as the protection scope of the present invention.

Claims (3)

1. A conductive wind pressure switch with a magnetic reed switch, characterized in that: the wind pressure switch includes a left shell (2) and a right shell (3), and the left shell (2) and the right shell (3) An elastic diaphragm (4) is installed between them, and the elastic diaphragm (4) isolates the internal space of the left and right shells, and divides the internal space of the left and right shells into a positive pressure chamber (5) and a negative pressure chamber (6); The elastic diaphragm (4) is clamped with a pair of fixed clips (7); the fixed clip (7) is provided with a spring column (8), wherein the fixed clips in the negative pressure chamber (6) A magnetic ring (9) is sheathed on the periphery of the spring column (8) of the piece (7), and the magnetic ring (9) is fixed on the fixed clip (7) of the negative pressure chamber (6); the left shell ( 2) and the middle position of the right shell (3) are provided with an adjusting screw (10), and a spring (11) is set between the adjusting screw (10) and the spring column (8); the outer surface of the right shell (3) is close to A reed switch (12) is arranged at the central position, and the reed switch (12) is in the same horizontal direction as the magnetic ring (9). 2. A magnetic reed switch conductive air pressure switch according to claim 1, characterized in that: the lower ends of the left shell (2) and the right shell (3) of the air pressure switch have a water leakage hole (13) , Leakage hole (13) is provided with a sealing cover. 3. A conductive air pressure switch with magnetic suction reed switch according to claim 1, characterized in that: the bottoms of the left shell (2) and the right shell (3) of the air pressure switch are equipped with air pipe joints ( 14), wherein the air pipe joint (14) at the bottom of the right shell (3) communicates with the air duct of the fan through the air pipe.

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