CN115046221A - Device for reducing generation of wind pressure switch condensate water, gas heating equipment and control method thereof - Google Patents
Device for reducing generation of wind pressure switch condensate water, gas heating equipment and control method thereof Download PDFInfo
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- CN115046221A CN115046221A CN202210435078.0A CN202210435078A CN115046221A CN 115046221 A CN115046221 A CN 115046221A CN 202210435078 A CN202210435078 A CN 202210435078A CN 115046221 A CN115046221 A CN 115046221A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 description 12
- 230000008859 change Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
- F23N5/247—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using mechanical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/027—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using mechanical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/26—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The invention discloses a device for reducing the generation of wind pressure switch condensate water, gas heating equipment and a control method thereof, wherein the device for reducing the generation of the wind pressure switch condensate water can switch a communication source of a negative pressure cavity of a wind pressure switch between a fan and the atmosphere, so that the pressure in the negative pressure cavity of the wind pressure switch is switched between negative pressure and normal pressure. When the wind pressure switch needs to be disconnected, when the negative pressure cavity of the wind pressure switch is communicated with the atmosphere, the flow of condensed water into the negative pressure cavity of the wind pressure switch is reduced, namely, the condensed water generated in the wind pressure switch is effectively reduced, and the structure is simple and safe. The gas heating equipment adopts the device for reducing the generation of the wind pressure switch condensate water, can effectively reduce the inflow of the condensate water into the negative pressure cavity of the wind pressure switch, and also effectively reduces the generation of the condensate water in the wind pressure switch.
Description
Technical Field
The invention belongs to the field of wind pressure switches and gas heating equipment, and particularly relates to a device for reducing the generation of wind pressure switch condensate water, gas heating equipment and a control method thereof.
Background
The wind pressure switch is a core component for determining whether a fan of a gas heating device such as a heating stove works normally. The negative pressure port of the air pressure switch is connected with the fan through a pipeline, and the positive pressure port is connected with the outside atmosphere through a pipeline. When the fan normally works, negative pressure is generated, pressure difference is generated on two sides of the wind pressure switch diaphragm, the wind pressure switch is forced to be closed, and the computer board detects that the whole machine ignites and burns after the wind pressure switch is closed. When the rotating speed of the fan is reduced or stopped, the negative pressure of the wind pressure switch is reduced, the diaphragm rebounds under the action of the spring, the wind pressure switch is disconnected, the computer board detects that the wind pressure switch is disconnected, the whole machine is flamed out, and the fan fault is reported. Because the gas heating equipment is lower like the air temperature that the heating stove inhales the external world in winter, the pipeline that wind pressure switch negative pressure mouth and fan link to each other can generate a large amount of comdenstions water, and the comdenstion water gathers together can block the route of wind pressure switch and fan or at the inside formation comdenstion water of wind pressure switch, leads to there being not the negative pressure in the wind pressure switch negative pressure intracavity, and the wind pressure switch can't be closed or the inside short circuit of wind pressure switch, and the complete machine can't normally work.
In the prior art, the sectional area of the wind pressure switch connecting pipe is generally increased to collect condensed water, so that the generation of the condensed water in the wind pressure switch can not be avoided. Chinese patent application No. 201821901084.6 discloses a hanging stove, through heating communicating pipe, can be steam with the comdenstion water heating in the communicating pipe to avoid the comdenstion water to block up and the problem that can't detect the wind pressure, nevertheless there is the potential safety hazard in this scheme.
The present invention has been made in view of this situation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a device for reducing the generation of wind pressure switch condensate water, which is simple and safe in structure and effectively reduces the generation of the wind pressure switch condensate water.
The second purpose of the invention is to provide a gas heating device adopting the device for reducing the generation of the wind pressure switch condensed water.
A third object of the present invention is to provide a method of controlling a gas heating apparatus.
In order to solve the technical problems, the invention adopts the technical scheme that:
the device for reducing the generation of the condensed water of the wind pressure switch is connected between the fan and the negative pressure cavity of the wind pressure switch, and comprises a switching mechanism, wherein the switching mechanism acts to communicate the negative pressure cavity of the wind pressure switch with the fan or the negative pressure cavity of the wind pressure switch with the atmosphere.
When the negative pressure cavity of the wind pressure switch is communicated with the fan through the device for reducing the generation of the condensed water of the wind pressure switch, the pressure in the positive pressure cavity of the wind pressure switch is greater than the pressure in the negative pressure cavity, the diaphragm in the wind pressure switch moves, and then the electrode in the wind pressure switch is contacted, namely the wind pressure switch is closed.
When the negative pressure cavity of the wind pressure switch is communicated with the atmosphere through a device for reducing the generation of condensed water of the wind pressure switch, the pressure of the positive pressure cavity of the wind pressure switch is consistent with that of the negative pressure cavity, and the diaphragm moves under the action of the spring in the negative pressure cavity of the wind pressure switch so as to disconnect the electrode, namely the wind pressure switch is disconnected. The negative pressure cavity of the wind pressure switch is communicated with the atmosphere when the wind pressure switch is to be disconnected, so that the condensed water is reduced or prevented from flowing into the negative pressure cavity of the wind pressure switch.
Furthermore, the device for reducing the generation of the wind pressure switch condensate water is a three-way valve, the switching mechanism comprises a valve core, a first interface of the three-way valve is communicated with the fan, a second interface of the three-way valve is communicated with the wind pressure switch negative pressure cavity, a third interface of the three-way valve is communicated with the atmosphere, and a motor of the three-way valve controls the action of the valve core to enable the negative pressure cavity of the wind pressure switch to be communicated with the fan or the atmosphere.
The three-way valve is used as a device for reducing the generation of the condensed water of the wind pressure switch, and the valve core of the three-way valve acts to enable the negative pressure cavity of the wind pressure switch to be communicated with the fan through the second interface and the first interface of the three-way valve or to enable the negative pressure cavity of the wind pressure switch to be communicated with the atmosphere through the second interface and the third interface of the three-way valve.
Further, the valve core divides the valve cavity of the three-way valve into a first valve cavity and a second valve cavity. The valve core acts to enable the first interface and the second interface of the three-way valve to be communicated through the first valve cavity, and negative pressure is formed in the negative pressure cavity of the wind pressure switch; the valve core acts to enable the second interface and the third interface of the three-way valve to be communicated through the second valve cavity, and normal pressure is formed in the negative pressure cavity of the wind pressure switch.
The valve cavities in the three-way valve are separated by the valve core to form an upper valve cavity and a lower valve cavity, the valve core can move axially along the valve cavities of the three-way valve to further change the sizes of the two valve cavities and change the interfaces of the three-way valve communicated with the valve cavities, so that a first interface and a second interface of the three-way valve are communicated through the first valve cavity, negative pressure is formed in a negative pressure cavity of the wind pressure switch, and at the moment, a third interface of the three-way valve is communicated with the second valve cavity but cannot be communicated with the second interface; or the second interface and the third interface of the three-way valve are communicated through the second valve cavity, normal pressure is formed in the negative pressure cavity of the wind pressure switch, and the first interface of the three-way valve is communicated with the first valve cavity but cannot be communicated with the second interface.
Furthermore, the three-way valve is vertically arranged, and the first connector, the second connector and the third connector are sequentially arranged from high to low along the axial direction of the three-way valve.
In order to enable the three-way valve to be connected more conveniently and avoid or reduce condensed water from entering a negative pressure cavity of the wind pressure switch, the three-way valve is vertically arranged, and a first interface, a second interface and a third interface of the three-way valve are sequentially arranged from high to low along the axial direction of the three-way valve.
When the first valve cavity of the three-way valve is communicated with the first connector and the second connector of the three-way valve, the valve core cuts off the communication between the third connector and the second connector, the negative pressure cavity of the wind pressure switch is communicated with the fan through the three-way valve, and the fan generates negative pressure during working, so that condensed water is pumped away. When equipment is ready to be shut down, the valve core is driven by the three-way valve motor to move upwards along the valve cavity to reduce the first valve cavity, the second valve cavity is enlarged, so that the second valve cavity is communicated with the second interface and the third interface, the negative pressure cavity of the wind pressure switch is communicated with the atmosphere through the three-way valve, the communication between the first interface and the second interface is cut off, namely, the communication between the negative pressure cavity of the wind pressure switch and the fan is cut off, thereby the condensate water generated by the work of the fan is prevented from flowing into the negative pressure cavity of the wind pressure switch, the negative pressure cavity of the wind pressure switch is changed into the normal pressure by the negative pressure at the moment, and the wind pressure switch is disconnected.
Furthermore, a first connector of the three-way valve is connected with the fan through a pipeline, and the direction of the pipeline and the direction of the fan connector are consistent with the direction of air flow in the fan.
In order to enable the fan to be capable of exhausting air to generate negative pressure, and therefore the negative pressure cavity of the air pressure switch communicated with the fan generates negative pressure, the first connector of the three-way valve is connected with the fan through a pipeline, and the direction of the pipeline and the fan connector is consistent with the direction of air flow in the fan. Therefore, the negative pressure suction pipeline generated in the fan, gas in the first valve cavity of the three-way valve and gas in the negative pressure cavity of the wind pressure switch enable the negative pressure to be generated in the negative pressure cavity of the wind pressure switch, and the wind pressure switch is closed.
Furthermore, the valve core is connected with a motor positioned on the upper part of the three-way valve, and a spring is arranged below the valve core and connected with the bottom of the valve cavity.
The valve core is driven by the motor to move upwards, and when the valve core needs to move downwards, the valve core can be driven to move downwards by the elastic force exerted by the extension spring.
The invention also provides gas heating equipment which comprises the device for reducing the generation of the wind pressure switch condensate water.
When the whole gas heating equipment is started, the negative pressure cavity of the wind pressure switch is connected with the fan through the three-way valve, and the fan generates negative pressure to extract gas in the negative pressure cavity of the wind pressure switch so as to close the wind pressure switch; when the whole gas heating equipment is closed, the three-way valve acts, the valve core moves to enable the wind pressure switch negative pressure cavity to be communicated with the external environment, namely the atmosphere, and the wind pressure switch sucks the external air so as to prevent condensed water generated by the work of the fan from entering the wind pressure switch negative pressure cavity and prevent the wind pressure switch from generating the condensed water.
The invention also provides a control method of the gas heating equipment, and the gas heating equipment is utilized.
After the gas heating equipment is started, the fan is communicated with the wind pressure switch negative pressure cavity, at the moment, the pressure in the positive pressure cavity of the wind pressure switch is greater than the pressure in the negative pressure cavity, so that the diaphragm in the wind pressure switch moves, the electrode in the wind pressure switch is contacted, namely the wind pressure switch is closed, and the gas heating equipment ignites and burns; after the gas heating equipment reaches a flameout condition, the communication between the fan and the negative pressure cavity of the wind pressure switch is disconnected, so that the negative pressure cavity of the wind pressure switch is communicated with the atmosphere, at the moment, the pressure of the positive pressure cavity of the wind pressure switch is consistent with that of the negative pressure cavity, the diaphragm moves under the action of the spring in the negative pressure cavity of the wind pressure switch, so that the electrode is disconnected, namely, the wind pressure switch is disconnected, and the gas heating equipment is flameout.
Further, when the gas heating equipment reaches a flameout condition, the ambient temperature reaches the set temperature.
When the gas heating equipment heats and supplies heat for the gas heating furnace, after the temperature sensor detects that the gas heating equipment heats and enables the ambient temperature to reach the set temperature and transmits a signal to the control unit of the gas heating equipment, the control unit of the gas heating equipment controls the action of the three-way valve, the three-way valve disconnects the connection between the fan and the negative pressure cavity of the wind pressure switch, so that the negative pressure cavity of the wind pressure switch is communicated with the atmosphere, at the moment, the pressure of the positive pressure cavity of the wind pressure switch is consistent with that of the negative pressure cavity, the diaphragm moves under the action of the spring in the negative pressure cavity of the wind pressure switch, so that the electrode is disconnected, namely, the wind pressure switch is disconnected, and the gas heating equipment is flameout.
Further, when the gas heating equipment reaches a flameout condition, the gas heating equipment detects that water inlet stops in the water inlet channel.
When the gas heating equipment heats for the gas heating stove, detect the gas heating equipment heating at temperature sensor and make ambient temperature reach the settlement temperature and behind transmitting signal to the gas heating equipment the control unit, the gas heats the equipment the control unit control three-way valve action, the three-way valve breaks off the intercommunication in the negative pressure chamber of fan and wind pressure switch, make the negative pressure chamber intercommunication atmosphere of wind pressure switch, at this moment, the positive pressure chamber of wind pressure switch is unanimous with the pressure in negative pressure chamber, make the diaphragm remove and then make the electrode disconnection under the effect of the negative pressure intracavity spring of wind pressure switch, namely the wind pressure switch disconnection, the gas heating equipment stalls.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
The invention discloses a device for reducing the generation of wind pressure switch condensate water, gas heating equipment and a control method thereof, wherein the device for reducing the generation of the wind pressure switch condensate water can switch a communication source of a negative pressure cavity of a wind pressure switch between a fan and the atmosphere, so that the pressure in the negative pressure cavity of the wind pressure switch is switched between negative pressure and normal pressure. When the wind pressure switch needs to be disconnected, when the negative pressure cavity of the wind pressure switch is communicated with the atmosphere, the flow of condensed water into the negative pressure cavity of the wind pressure switch is reduced, namely, the condensed water generated in the wind pressure switch is effectively reduced, and the structure is simple and safe. The gas heating equipment adopts the device for reducing the generation of the wind pressure switch condensate water, can effectively reduce the inflow of the condensate water into the negative pressure cavity of the wind pressure switch, and also effectively reduces the generation of the condensate water in the wind pressure switch.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments and that for a person skilled in the art, other drawings can also be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view of a device for reducing the condensate water generation of a wind pressure switch, which communicates a negative pressure cavity of the wind pressure switch with a fan;
fig. 2 is a schematic view of the device for reducing the generation of wind pressure switch condensate water for communicating the negative pressure cavity of the wind pressure switch with the atmosphere.
In the figure: 1. a fan; 2. a three-way valve; 21. a first interface; 22. a second interface; 23. a third interface; 3. a wind pressure switch; 31. a negative pressure chamber; 32. a positive pressure chamber; 33. a membrane; 34. a spring; 35. and an electrode.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and 2, the device for reducing the generation of the condensed water of the wind pressure switch of the present invention is connected between the fan and the negative pressure cavity of the wind pressure switch, and comprises a switching mechanism, wherein the switching mechanism acts to communicate the negative pressure cavity of the wind pressure switch with the fan or the negative pressure cavity of the wind pressure switch with the atmosphere, so that the communication source of the negative pressure cavity 31 of the wind pressure switch 3 can be switched between the fan 1 and the atmosphere, and the pressure in the negative pressure cavity 31 of the wind pressure switch 3 can be switched between negative pressure and normal pressure.
When the negative pressure cavity 31 of the wind pressure switch 3 is communicated with the fan 1 through a device for reducing the generation of the wind pressure switch condensate water, the pressure in the positive pressure cavity 32 of the wind pressure switch 3 is larger than the pressure in the negative pressure cavity 31, the diaphragm 33 in the wind pressure switch 3 moves, and then the electrode 35 in the wind pressure switch 3 is contacted, namely the wind pressure switch 3 is closed.
When the negative pressure cavity 31 of the wind pressure switch 3 is communicated with the atmosphere through a device for reducing the generation of wind pressure switch condensate water, the pressure of the positive pressure cavity 32 of the wind pressure switch 3 is consistent with that of the negative pressure cavity 31, and the diaphragm 33 moves under the action of the spring 34 in the negative pressure cavity 31 of the wind pressure switch 3 so as to disconnect the electrode 35, namely, the wind pressure switch 3 is disconnected. By bringing the negative pressure chamber 31 of the wind pressure switch 3 into communication with the atmosphere when the wind pressure switch 3 is to be switched off, the inflow of condensate water into the negative pressure chamber 31 of the wind pressure switch 3 is reduced or avoided.
In this embodiment, the device for reducing the generation of the wind pressure switch condensed water is a three-way valve 2, the switching mechanism includes a valve core, a first interface 21 of the three-way valve 2 is communicated with the fan 1, a second interface 22 is communicated with the negative pressure cavity 31 of the wind pressure switch 3, a third interface 23 is communicated with the atmosphere, and a motor of the three-way valve 2 controls the action of the valve core to enable the negative pressure cavity 31 of the wind pressure switch 3 to be communicated with the fan 1 or the atmosphere.
By arranging the three-way valve 2 as a device for reducing the generation of the wind pressure switch condensate, the valve core of the three-way valve 2 is used for acting, so that the negative pressure cavity 31 of the wind pressure switch 3 is communicated with the fan 1 through the second interface 22 and the first interface 21 of the three-way valve 2, or the negative pressure cavity 31 of the wind pressure switch 3 is communicated with the atmosphere through the second interface 22 and the third interface 23 of the three-way valve 2. The valve spool of the three-way valve 2 divides the valve chamber of the three-way valve 2 into a first valve chamber and a second valve chamber. The valve core acts to enable the first port 21 and the second port 22 of the three-way valve 2 to be communicated through the first valve cavity, and negative pressure is formed in the negative pressure cavity 31 of the wind pressure switch 3; the valve core acts to communicate the second port 22 and the third port 23 of the three-way valve 2 through the second valve cavity, and normal pressure is formed in the negative pressure cavity 31 of the wind pressure switch 3.
The valve cavity in the three-way valve 2 is divided into an upper valve cavity and a lower valve cavity by the valve core, the valve core can move axially along the valve cavity of the three-way valve 2 to change the sizes of the two valve cavities and change the interfaces of the three-way valve 2 communicated with the valve cavities, so that a first interface 21 and a second interface 22 of the three-way valve 2 are communicated through the first valve cavity, negative pressure is formed in a negative pressure cavity 31 of the wind pressure switch 3, and at the moment, a third interface 23 of the three-way valve 2 is communicated with the second valve cavity but cannot be communicated with the second interface 22; or, the second port 22 and the third port 23 of the three-way valve 2 are communicated through the second valve cavity, and normal pressure is formed in the negative pressure cavity 31 of the wind pressure switch 3, at this time, the first port 21 of the three-way valve 2 is communicated with the first valve cavity but cannot be communicated with the second port 22.
In order to facilitate the connection of the three-way valve 2 and avoid or reduce the condensed water from entering the negative pressure cavity 31 of the wind pressure switch 3, the three-way valve 2 is vertically arranged, and the first interface 21, the second interface 22 and the third interface 23 of the three-way valve 2 are sequentially arranged from high to low along the axial direction of the three-way valve 2.
When the first valve cavity of the three-way valve 2 is communicated with the first connector 21 and the second connector 22 of the three-way valve 2, the valve core cuts off the communication between the third connector 23 and the second connector 22, the negative pressure cavity 31 of the wind pressure switch 3 is communicated with the fan 1 through the three-way valve 2, and the condensed water is pumped away because the fan 1 generates negative pressure during working. When equipment is ready to be shut down, the valve core driven by the motor of the three-way valve 2 moves upwards along the valve cavity to reduce the first valve cavity, the second valve cavity is enlarged, so that the second valve cavity is communicated with the second interface 22 and the third interface 23, the negative pressure cavity 31 of the wind pressure switch 3 is communicated with the atmosphere through the three-way valve 2, the communication between the first interface 21 and the second interface 22 is cut off, namely, the communication between the negative pressure cavity 31 of the wind pressure switch 3 and the fan 1 is cut off, so that condensed water generated by the work of the fan 1 is prevented from flowing into the negative pressure cavity 31 of the wind pressure switch 3, the negative pressure in the negative pressure cavity 31 of the wind pressure switch 3 is changed into normal pressure, and the wind pressure switch 3 is disconnected.
The first connector 21 of the three-way valve 2 is connected with the fan 1 through a pipeline, and the direction of the pipeline and the fan 1 connector is consistent with the direction of air flow in the fan 1.
In order to enable the fan 1 to extract air to generate negative pressure, and thus to enable the negative pressure cavity 31 of the wind pressure switch 3 communicated with the fan 1 to generate negative pressure, the first connector 21 of the three-way valve 2 is connected with the fan 1 through a pipeline, and the direction of the pipeline and the connector of the fan 1 is consistent with the direction of air flow in the fan 1. Therefore, the negative pressure suction pipeline generated in the fan 1, the gas in the first valve cavity of the three-way valve 2 and the gas in the negative pressure cavity 31 of the wind pressure switch 3 enable the negative pressure generated in the negative pressure cavity 31 of the wind pressure switch 3, and the wind pressure switch 3 is closed.
The valve core is connected with a motor positioned at the upper part of the three-way valve 2, and a spring is arranged below the valve core to connect the valve core with the bottom of the valve cavity. The valve core is driven by the motor to move upwards, and when the valve core needs to move downwards, the valve core can be driven to move downwards by the elastic force exerted by the extension spring.
The invention also provides gas heating equipment which comprises the device for reducing the generation of the wind pressure switch condensate water.
When the whole gas heating equipment is started, the negative pressure cavity 31 of the wind pressure switch 3 is connected with the fan 1 through the three-way valve 2, and the fan 1 generates negative pressure to extract gas in the negative pressure cavity 31 of the wind pressure switch 3 so as to close the wind pressure switch 3; when the whole gas heating equipment is closed, the three-way valve 2 acts, the valve core moves to enable the negative pressure cavity 31 of the wind pressure switch 3 to be communicated with the external environment, namely the atmosphere, and the wind pressure switch 3 sucks external air so as to prevent condensed water generated by the work of the fan 1 from entering the negative pressure cavity 31 of the wind pressure switch 3, so that the wind pressure switch 3 is prevented from generating condensed water.
The invention also provides a control method of the gas heating equipment, which utilizes the gas heating equipment.
After the gas heating equipment is started, the three-way valve 2 is communicated with the fan 1 and the negative pressure cavity 31 of the wind pressure switch 3, at the moment, the pressure in the positive pressure cavity 32 of the wind pressure switch 3 is larger than the pressure in the negative pressure cavity 31, so that the diaphragm 33 in the wind pressure switch 3 moves, the electrode 35 in the wind pressure switch 3 is contacted, namely the wind pressure switch 3 is closed, and the gas heating equipment ignites and burns; after the gas heating equipment reaches a flameout condition, the three-way valve 2 disconnects the communication between the fan 1 and the negative pressure cavity 31 of the wind pressure switch 3, so that the negative pressure cavity 31 of the wind pressure switch 3 is communicated with the atmosphere, at the moment, the pressure of the positive pressure cavity 32 of the wind pressure switch 3 is consistent with that of the negative pressure cavity 31, the diaphragm 33 is moved under the action of the spring 34 in the negative pressure cavity 31 of the wind pressure switch 3, so that the electrode 35 is disconnected, namely, the wind pressure switch 3 is disconnected, and the gas heating equipment is flameout.
When the gas heating equipment heats and heats the gas heating furnace, the gas heating equipment reaches a flameout condition, namely the environment temperature reaches the set temperature.
After the temperature sensor detects that the gas heating equipment is heated to enable the ambient temperature to reach the set temperature and transmit a signal to the gas heating equipment control unit, the gas heating equipment control unit controls the three-way valve 2 to act, the three-way valve 2 disconnects the communication between the fan 1 and the negative pressure cavity 31 of the wind pressure switch 3 to enable the negative pressure cavity 31 of the wind pressure switch 3 to be communicated with the atmosphere, at the moment, the pressure of the positive pressure cavity 32 of the wind pressure switch 3 is consistent with that of the negative pressure cavity 31, the diaphragm 33 moves under the action of the spring 34 in the negative pressure cavity 31 of the wind pressure switch 3 to further disconnect the electrode 35, namely the wind pressure switch 3 is disconnected, and the gas heating equipment is flameout.
When the gas heating equipment heats and supplies heat for the gas heating furnace, the gas heating equipment reaches a flameout condition and detects that water inlet stops in a water inlet channel of the gas heating equipment.
After the temperature sensor detects that the ambient temperature reaches the set temperature due to the heating of the gas heating equipment and transmits a signal to the control unit of the gas heating equipment, the control unit of the gas heating equipment controls the three-way valve 2 to act, the three-way valve 2 disconnects the communication between the fan 1 and the negative pressure cavity 31 of the wind pressure switch 3, so that the negative pressure cavity 31 of the wind pressure switch 3 is communicated with the atmosphere, at the moment, the pressure of the positive pressure cavity 32 of the wind pressure switch 3 is consistent with that of the negative pressure cavity 31, the diaphragm 33 moves under the action of the spring 34 in the negative pressure cavity 31 of the wind pressure switch 3, so that the electrode 35 is disconnected, namely, the wind pressure switch 3 is disconnected, and the gas heating equipment is flameout.
The invention discloses a device for reducing the generation of wind pressure switch condensate water, gas heating equipment and a control method thereof, wherein the device for reducing the generation of the wind pressure switch condensate water can switch a communication source of a negative pressure cavity of a wind pressure switch between a fan and the atmosphere, so that the pressure in the negative pressure cavity of the wind pressure switch is switched between negative pressure and normal pressure. When the wind pressure switch needs to be disconnected, when the negative pressure cavity of the wind pressure switch is communicated with the atmosphere, the flow of condensed water into the negative pressure cavity of the wind pressure switch is reduced, namely, the condensed water generated in the wind pressure switch is effectively reduced, and the structure is simple. The gas heating equipment adopts the device for reducing the generation of the wind pressure switch condensate water, can effectively reduce the inflow of the condensate water into the negative pressure cavity of the wind pressure switch, and also effectively reduces the generation of the condensate water in the wind pressure switch.
The above embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention in any way, and although the present invention has been disclosed by the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications to the equivalent embodiments by using the technical contents disclosed above without departing from the technical scope of the present invention, and the embodiments in the above embodiments can be further combined or replaced, but any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.
Claims (10)
1. Reduce device that wind pressure switch comdenstion water produced, its characterized in that:
the device is connected between a fan and a negative pressure cavity of a wind pressure switch,
the air pressure switch comprises a switching mechanism, wherein the switching mechanism acts to communicate a negative pressure cavity of the air pressure switch with a fan or the negative pressure cavity of the air pressure switch with the atmosphere.
2. Reduce device that wind pressure switch comdenstion water produced, its characterized in that: is a three-way valve, the switching mechanism comprises a valve core,
the first interface of the three-way valve is communicated with the fan, the second interface is communicated with the negative pressure cavity of the wind pressure switch, the third interface is communicated with the atmosphere, and the motor of the three-way valve controls the valve core to act, so that the negative pressure cavity of the wind pressure switch is communicated with the fan or the atmosphere.
3. The device for reducing the generation of the wind pressure switch condensate water according to claim 2, wherein:
the valve core divides the valve cavity of the three-way valve into a first valve cavity and a second valve cavity,
the valve core acts to enable the first interface and the second interface of the three-way valve to be communicated through the first valve cavity, negative pressure is formed in the negative pressure cavity of the wind pressure switch,
the valve core acts to enable the second interface and the third interface of the three-way valve to be communicated through the second valve cavity, and normal pressure is formed in the negative pressure cavity of the wind pressure switch.
4. The device for reducing the condensate water generation of the wind pressure switch according to claim 2, wherein: the three-way valve is vertically arranged, and the first connector, the second connector and the third connector are sequentially arranged from high to low along the axial direction of the three-way valve.
5. The device for reducing the condensate water generation of the wind pressure switch according to claim 2, wherein:
the first interface of the three-way valve is connected with the fan through a pipeline, and the orientation of the pipeline and the fan connecting interface is consistent with the direction of air flow in the fan.
6. The device for reducing the generation of the wind pressure switch condensate water according to claim 3, wherein:
the valve core is connected with a motor positioned on the upper part of the three-way valve, and a spring is arranged below the valve core to connect the valve core with the bottom of the valve cavity.
7. The utility model provides a gas equipment for heating which characterized in that: the device for reducing the condensate water generation of the wind pressure switch comprises the device for reducing the condensate water generation of the wind pressure switch as claimed in any one of claims 1 to 6.
8. A control method of gas heating equipment is characterized by comprising the following steps: with the gas-fired heating plant of claim 7,
after the gas heating equipment is started, the fan is communicated with the negative pressure cavity of the wind pressure switch, so that the wind pressure switch is closed, and the gas heating equipment ignites and burns;
after the gas heating equipment reaches a flameout condition, the connection between the fan and the negative pressure cavity of the wind pressure switch is disconnected, so that the negative pressure cavity of the wind pressure switch is communicated with the atmosphere, the wind pressure switch is disconnected, and the gas heating equipment is flameout.
9. The gas-fired heating apparatus control method according to claim 8, characterized in that: the gas heating equipment reaches the flameout condition, namely the environment temperature reaches the set temperature.
10. The gas-fired heating apparatus control method according to claim 8, characterized in that: when the gas heating equipment reaches the flameout condition, the water inlet stop is detected in the water inlet channel of the gas heating equipment.
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| CN115046221B (en) | 2024-10-11 |
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