CN107255180B - Atmospheric hot water tank and ventilation device and ventilation method thereof - Google Patents
Atmospheric hot water tank and ventilation device and ventilation method thereof Download PDFInfo
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- CN107255180B CN107255180B CN201710282488.5A CN201710282488A CN107255180B CN 107255180 B CN107255180 B CN 107255180B CN 201710282488 A CN201710282488 A CN 201710282488A CN 107255180 B CN107255180 B CN 107255180B
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- valve core
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
- F16K17/19—Equalising valves predominantly for tanks
- F16K17/196—Equalising valves predominantly for tanks spring-loaded
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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
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The invention discloses a normal pressure hot water tank, a ventilation device and a ventilation method thereof; the ventilation device comprises a water tank connecting joint, a valve assembly and a condensation heat exchange tube; the water tank connecting joint is communicated with/cut off from the condensation heat exchange pipe through the valve assembly; the included angle between the axis of the valve component and the axis of the condensation heat exchange tube is larger than 90 degrees; the valve assembly comprises a valve body and a valve core capable of moving along an inner cavity of the valve body; the valve body cavity is provided with a valve seat, the valve core is provided with an opening and closing part for opening and closing the valve seat, and elastic pieces are arranged between the opening and closing part and the two end parts of the valve body; therefore, the invention can control whether the hot water tank is in a ventilation state or not through the pretightening force provided by the elastic piece, thereby controlling the hot water tank to be basically in a normal pressure heating state.
Description
Technical Field
The invention relates to a ventilation device, in particular to a ventilation device applied to a hot water tank under normal pressure.
Background
The hot water tank normally works under normal pressure needs to be communicated with the atmospheric environment so as to maintain the normal pressure state of the water surface in the water tank, thereby being suitable for the operation requirements of related systems or processes and the like. If the high-humidity hot air is directly emitted into the environment through the air holes, a large amount of latent heat of vaporization is carried by the steam in the hot air, and the cold air enters the environment to further cause evaporation of water in the box, so that a large amount of heat loss is easily caused by the existence of the air holes, and meanwhile, water is also lost. Under the condition of high requirements on heat loss or heat preservation of the water tank, the purpose of normal pressure in the water tank can not be achieved through the simple air holes, and a novel ventilation device is needed to be designed, so that the normal pressure effect in the water tank can be maintained, and the emission of hot air in the water tank can be avoided as much as possible.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a ventilation device which can maintain the normal pressure effect in a box body and can avoid the emission of hot air in the box as much as possible.
In order to achieve the technical purpose, the invention adopts the following technical scheme: an atmospheric hot water tank ventilation device comprises a water tank connecting joint, a valve assembly and a condensation heat exchange tube; the water tank connecting joint is communicated with/cut off from the condensation heat exchange pipe through the valve assembly; the included angle between the axis of the valve component and the axis of the condensation heat exchange tube is larger than 90 degrees; the valve assembly comprises a valve body and a valve core capable of moving along an inner cavity of the valve body; the valve body cavity is provided with a valve seat, the valve core is provided with an opening and closing part for opening and closing the valve seat, and elastic pieces are arranged between the opening and closing part and the two end parts of the valve body; the restoring force provided by the elastic piece and the internal and external pressure difference of the hot water tank are always in dynamic balance; when the pressure difference between the inside and the outside of the hot water tank can not overcome the pressure of the restoring force provided by the elastic piece, the valve core is positioned at the position of the valve seat, the gap between the valve core and the valve seat can form water film sealing through condensed water obtained by condensing the heat exchange tube, the valve assembly is in a cut-off state, and the hot water tank is in a closed state; when the pressure difference between the inside and the outside of the hot water tank can overcome the pressure of the restoring force provided by the elastic piece, the positions of the valve core and the valve seat are staggered, the sealing water film between the valve core and the valve seat is destroyed, the valve assembly is in an open state, and the hot water tank is in a ventilation state.
The valve core is a shaft-shaped member with thick middle part and slender two ends, and the valve body is a tubular member; the opening and closing part is a thick middle section of the valve core, and the valve seat is an outer flange of the valve body arranged at the middle position of the inner wall of the tubular valve body.
The upper end of the tubular valve body is connected with the condensation heat exchange pipe through a first valve core guiding connecting piece, and the lower end of the tubular valve body is connected with the water tank connecting joint through a second valve core guiding connecting piece; the first valve core guiding connecting piece and the second valve core guiding connecting piece are consistent in structure, and comprise an outer layer structure and guiding holes which are axially arranged along the outer layer structure and used for guiding the valve core, wherein a space exists between the outer wall of each guiding hole and the outer layer structure and are connected through more than two rib plates; the slender shaft body at the upper end of the valve core can move in the guide hole of the first valve core guide connecting piece, and the slender shaft body at the lower end of the valve core can move in the guide hole of the second valve core guide connecting piece; one of the two elastic parts is sleeved on the periphery of the slender shaft body at the upper end of the valve core, and the other elastic part is sleeved on the periphery of the slender shaft body at the lower end of the valve core.
The outer layer structure is arranged as a double-outer-wire straight joint; and the outer layer structure of the second valve core guiding connecting piece is connected through a bent pipe condensation heat exchange pipe.
The bent pipe is connected with the condensation heat exchange pipe through a third valve core guiding connecting piece, and the structure of the third valve core guiding connecting piece is consistent with that of the first valve core guiding connecting piece and that of the second valve core guiding connecting piece; the condensing heat exchange tube is of a double-layer tubular structure and comprises an outer tube and an inner tube which are coaxially arranged, the outer tube is of an equal-diameter tubular structure, the inner tube is of a two-section structure and comprises an equal-diameter tube section and a trumpet-shaped tube section, one end of the equal-diameter tube section is connected with the trumpet-shaped tube section into a whole, the other end of the equal-diameter tube section extends out of the end of the outer tube and is placed in a guide hole of a third valve core guide connecting piece, and the equal-diameter tube section can move in the guide hole of the third valve core guide connecting piece.
The outer layer structure of the first valve core guiding connecting piece is connected with the water tank connecting joint through the double-outer-wire straight joint.
The water tank connecting joint is provided with a silk screen.
Another technical object of the invention is to provide an atmospheric hot water tank, comprising a tank top; the top of the water tank is provided with any ventilation device.
The invention also aims to provide a ventilation method of the normal pressure hot water tank, which comprises the following steps: (1) A plurality of ventilation devices are arranged at the top of the water tank, and the pretightening force of the elastic piece is determined according to a preset pressure threshold value in the hot water tank; (2) When the pressure in the hot water tank does not reach the preset pressure threshold value in the hot water tank, the valve assemblies in the ventilation devices are positioned in the valve seats under the action of the pretightening force provided by the elastic pieces, condensed water in the heat exchange tubes in the ventilation devices promotes gaps between the valve assemblies and the valve seats to be water film sealing, at the moment, the valve assemblies are in a cut-off state, when the pressure in the hot water tank reaches the preset pressure threshold value in the hot water tank, the pretightening force of the elastic pieces can be overcome, the valve assemblies and the valve seats are pushed to be misplaced, a sealing water film between the valve assemblies and the valve seats is damaged, the valve assemblies are in an open state, the hot water tank is communicated with the external environment, and in a ventilation process, until the pressure difference between the hot water tank and the external environment cannot overcome the restoring force of the elastic pieces, the valve assemblies are driven by the restoring force of the elastic pieces to return to the valve seats again, and the next hot water tank is closed and ventilation circulation process is carried out.
According to the technical scheme, compared with the prior art, the invention has the following beneficial effects: the valve assembly and the condensing heat exchange tube can ensure the normal ventilation effect inside and outside the water tank, maintain the balance of the pressure inside and outside the water tank in a certain pressure difference range, keep the isolation of the air inside and outside the hot water tank, and effectively prevent the hot air with high humidity in the tank from being emitted to the environment, thereby reducing the heat loss and the water loss. The device is also suitable for other heat medium storage containers under normal pressure. Belonging to the valve class of devices.
Drawings
FIG. 1 is a schematic diagram of an exploded structure of a ventilation device of an atmospheric hot water tank according to the present invention;
FIG. 2 is a semi-sectional view of the ventilation device of the normal pressure hot water tank of the invention;
FIG. 3 is a schematic perspective view of the water tank connection joint according to the present invention;
FIG. 4a is a schematic perspective view of a valve assembly according to the present invention;
FIG. 4b is a semi-sectional view of a valve assembly according to the present invention;
FIG. 5a is a schematic perspective view of a guide member according to the present invention;
FIG. 5b is a semi-sectional view of the guide member of the present invention;
in the figure: the water tank is connected with the joint 1; a double outer wire direct head 2; a valve body 31; a spool 32; a spring 33; a first spool guide connection 34; a second spool guide connection 35; a bent pipe 4; a third valve element guide connection 5; a condensing heat exchange tube 6; a wire mesh 8; a middle guide hole 2-a; a first threaded joint 2-b; peripheral through holes 2-c; a second threaded joint 2-d; an outer tube 61; an outer tube thread fixing portion 61-a; an inner tube 62; an inner tube air outlet 62-a; an inner tube intake 62-b; inner tube guide 62-c.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. The relative arrangement, expressions and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations).
As shown in fig. 1 and 2, the ventilation device of the normal pressure hot water tank comprises three parts, namely a water tank connecting joint, a valve assembly and a heat exchange condensation pipe, wherein the water tank connecting joint is communicated with/cut off from the condensation heat exchange pipe through the valve assembly; the axis of the valve assembly and the axis of the condensing heat exchange tube form an included angle of more than 90 degrees, wherein: the water tank connection joint is a double-external-wire direct joint as shown in fig. 1-3, and is provided with a silk screen.
The valve assembly comprises a valve body and a valve core capable of moving along the inner cavity of the valve body; the valve body cavity is provided with a valve seat, the valve core is provided with an opening and closing part for opening and closing the valve seat, and elastic pieces are arranged between the opening and closing part and the two end parts of the valve body; as shown in fig. 1, 2, 4a and 4b, the valve core is a shaft-shaped member with thick middle part and slender two ends, and the valve body is a tubular member; the opening and closing part is a thick middle section of the valve core, the valve seat is an outer flange of the valve body arranged at the middle position of the inner wall of the tubular valve body, the upper end of the tubular valve body is connected with the condensation heat exchange pipe through a first valve core guiding connecting piece, and the lower end of the tubular valve body is connected with the water tank connecting joint through a second valve core guiding connecting piece; the first valve core guiding connecting piece and the second valve core guiding connecting piece are identical in structure, as shown in fig. 5a and 5b, and comprise an outer layer structure and guiding holes axially arranged along the outer layer structure and used for guiding the valve core, wherein a space exists between the outer wall of each guiding hole and the outer layer structure and the outer wall of each guiding hole is connected through more than two rib plates; the slender shaft body at the upper end of the valve core can move in the guide hole of the first valve core guide connecting piece, and the slender shaft body at the lower end of the valve core can move in the guide hole of the second valve core guide connecting piece; the elastic piece is a spring, and is provided with two elastic pieces, one elastic piece is sleeved on the periphery of the slender shaft body at the upper end of the valve core, and the other elastic piece is sleeved on the lower end of the valve core.
The outer layer structure is arranged as a double-external-thread straight joint and is provided with a first threaded joint head 2-b and a second threaded joint head 2-d; the outer layer structure of the second valve core guiding connecting piece is connected with the condensation heat exchange pipe through an elbow pipe, the elbow pipe is connected with the condensation heat exchange pipe through a third valve core guiding connecting piece, and the structure of the third valve core guiding connecting piece is consistent with the structures of the first valve core guiding connecting piece and the second valve core guiding connecting piece; therefore, the installation mode that the included angle between the axis of the valve assembly and the axis of the condensation heat exchange tube is larger than 90 degrees becomes reality, and the installation device has the advantages of being simple in structure and convenient to install.
The heat exchange condenser pipe is of a double-layer tubular structure, as shown in fig. 1, and comprises an outer pipe and an inner pipe which are coaxially arranged, wherein the outer pipe is of an equal-diameter tubular structure, the inner pipe is of a two-section structure, the inner pipe comprises an equal-diameter pipe section and a trumpet-shaped pipe section, one end of the equal-diameter pipe section is connected with the trumpet-shaped pipe section into a whole, the other end of the equal-diameter pipe section extends out of the end of the outer pipe and is arranged in a guide hole of a third valve core guide connecting piece, and the equal-diameter pipe section can move in the guide hole of the third valve core guide connecting piece.
In addition, the invention enables the first valve core guiding connecting piece and the water tank connecting joint to have a long enough distance, and the outer layer structure of the first valve core guiding connecting piece is connected with the water tank connecting joint through the double-outer-wire straight joint.
The invention has the following characteristics: the restoring force provided by the elastic piece and the internal and external pressure difference of the hot water tank are always in dynamic balance; when the pressure difference between the inside and the outside of the hot water tank can not overcome the pressure of the restoring force provided by the elastic piece, the valve core is positioned at the position of the valve seat, the gap between the valve core and the valve seat can form water film sealing through condensed water obtained by condensing the heat exchange tube, the valve assembly is in a cut-off state, and the hot water tank is in a closed state; when the pressure difference between the inside and the outside of the hot water tank can overcome the pressure of the restoring force provided by the elastic piece, the positions of the valve core and the valve seat are staggered, the sealing water film between the valve core and the valve seat is destroyed, the valve assembly is in an open state, and the hot water tank is in a ventilation state.
The ventilation device is generally arranged at the top of a water tank of the normal-pressure hot water tank.
Therefore, the invention provides a ventilation method of an atmospheric hot water tank, which comprises the following steps: (1) A plurality of ventilation devices are arranged at the top of the water tank, and the pretightening force of the elastic piece is determined according to a preset pressure threshold value in the hot water tank; (2) When the pressure in the hot water tank does not reach the preset pressure threshold value in the hot water tank, the valve assemblies in the ventilation devices are positioned in the valve seats under the action of the pretightening force provided by the elastic pieces, condensed water in the heat exchange tubes in the ventilation devices promotes gaps between the valve assemblies and the valve seats to be water film sealing, at the moment, the valve assemblies are in a cut-off state, when the pressure in the hot water tank reaches the preset pressure threshold value in the hot water tank, the pretightening force of the elastic pieces can be overcome, the valve assemblies and the valve seats are pushed to be misplaced, a sealing water film between the valve assemblies and the valve seats is damaged, the valve assemblies are in an open state, the hot water tank is communicated with the external environment, and in a ventilation process, until the pressure difference between the hot water tank and the external environment cannot overcome the restoring force of the elastic pieces, the valve assemblies are driven by the restoring force of the elastic pieces to return to the valve seats again, and the next hot water tank is closed and ventilation circulation process is carried out.
Working principle: the ventilation device has a three-section structure and corresponds to different functions.
First segment (tank connection): the ventilation device is positioned at the top of the water tank, and the valve core part of the valve body is required to be vertically installed. The water in the hot water tank evaporates to generate steam which enters an air layer in the tank, and the steam is condensed into condensed water when passing through the ventilation device, and finally flows back to the stainless steel small-hole silk screen, and a layer of sealing water film with a certain thickness is formed on the surface of the silk screen due to acting force among water molecules and the 'surface' of the small-hole silk screen, so that further outflow of hot air in the tank or inflow of air outside the tank is effectively prevented, and evaporation is stopped when saturated steam partial pressure is reached in the tank. When the pressure difference between the inside and the outside of the box is large enough to destroy the water film, the water film is destroyed instantaneously, so that the inside and the outside are ventilated, and after the pressure balance is restored, a sealed water film can be formed quickly.
Second stage (valve assembly): the valve core is in a piston shape, can vertically run up and down, is provided with a reasonable gap between the valve core and the valve body wall, and can be sealed by water when condensed water exists, so that the outflow of hot air in the tank or the inflow of air outside the tank is prevented. When enough pressure difference is generated between the inside and the outside of the hot water tank, the valve core moves upwards or downwards to enable the sealing surface to be completely misplaced so as to realize ventilation; and when the internal and external pressure difference is reduced, under the action of the spring, the valve core sealing surface starts to reset, when the internal and external pressure difference is zero, the valve core sealing surface completely resets to the original state, and the sealing action of water is simultaneously recovered.
Third stage (heat exchange condenser tube): the section mainly realizes the condensation heat exchange function, and avoids or reduces the loss of moisture and heat as much as possible. The built-in copper pipe is a sandwich layer, the outlet of hot air in the tank is slightly higher than the inlet, a certain elevation angle is formed, the design of the pipe section enables the hot air to easily go away from the outer sandwich layer, and the ambient air easily enters from the center, so that condensed water can flow back to the hot water tank conveniently. When ventilation is carried out, the flowing steam and the flowing air exchange heat and condense inside and outside the copper pipe, the cold air is heated and flows in, the hot air is cooled to form condensed water to flow back to the lower section of the ventilation device, and finally the condensed water flows to the water tank.
Claims (5)
1. The ventilation device of the normal pressure hot water tank is characterized by comprising a water tank connecting joint, a valve assembly and a condensation heat exchange tube; the water tank connecting joint is communicated with/cut off from the condensation heat exchange pipe through the valve assembly; the included angle between the axis of the valve component and the axis of the condensation heat exchange tube is larger than 90 degrees; the valve assembly comprises a valve body and a valve core capable of moving along an inner cavity of the valve body; the valve body cavity is provided with a valve seat, the valve core is provided with an opening and closing part for opening and closing the valve seat, and elastic pieces are arranged between the opening and closing part and the two end parts of the valve body;
the restoring force provided by the elastic piece and the internal and external pressure difference of the hot water tank are always in dynamic balance;
when the pressure difference between the inside and the outside of the hot water tank can not overcome the pressure of the restoring force provided by the elastic piece, the valve core is positioned at the position of the valve seat, the gap between the valve core and the valve seat can form water film sealing through condensed water obtained by condensing the heat exchange tube, the valve assembly is in a cut-off state, and the hot water tank is in a closed state;
when the pressure difference between the inside and the outside of the hot water tank can overcome the pressure of the restoring force provided by the elastic piece, the positions of the valve core and the valve seat are staggered, a sealing water film between the valve core and the valve seat is destroyed, the valve assembly is in an open state, and the hot water tank is in a ventilation state;
the valve core is a shaft-shaped member with thick middle part and slender two ends, and the valve body is a tubular member; the opening and closing part is a thick middle section of the valve core, and the valve seat is an outer flange of the valve body arranged at the middle position of the inner wall of the tubular valve body;
the upper end of the tubular valve body is connected with the condensation heat exchange pipe through a first valve core guiding connecting piece, and the lower end of the tubular valve body is connected with the water tank connecting joint through a second valve core guiding connecting piece; the first valve core guiding connecting piece and the second valve core guiding connecting piece are identical in structure and comprise an outer layer structure and a guiding hole which is axially arranged along the outer layer structure and used for guiding the valve core;
the slender shaft body at the upper end of the valve core can move in the guide hole of the first valve core guide connecting piece, and the slender shaft body at the lower end of the valve core can move in the guide hole of the second valve core guide connecting piece;
the outer layer structure is arranged as a double-outer-wire straight joint; the outer layer structure of the second valve core guiding connecting piece is connected with the condensation heat exchange pipe through an elbow;
the bent pipe is connected with the condensation heat exchange pipe through a third valve core guiding connecting piece, and the structure of the third valve core guiding connecting piece is consistent with that of the first valve core guiding connecting piece and that of the second valve core guiding connecting piece;
the condensing heat exchange tube is of a double-layer tubular structure and comprises an outer tube and an inner tube which are coaxially arranged, the outer tube is of an equal-diameter tubular structure, the inner tube is of a two-section structure and comprises an equal-diameter tube section and a trumpet-shaped tube section, one end of the equal-diameter tube section is connected with the trumpet-shaped tube section into a whole, the other end of the equal-diameter tube section extends out of the end of the outer tube and is placed in a guide hole of a third valve core guide connecting piece, and the equal-diameter tube section can move in the guide hole of the third valve core guide connecting piece.
2. The atmospheric hot water tank ventilation device of claim 1, wherein the outer layer structure of the first valve core guiding connection member is connected with the water tank connection joint through a double-outer-wire straight joint.
3. An atmospheric hot water tank ventilation device in accordance with claim 1 wherein the tank connection fitting is fitted with a wire mesh.
4. An atmospheric hot water tank comprises a water tank top; a ventilating device according to any one of claims 1-3, characterized in that the top of the water tank is fitted with the ventilating device.
5. A method of venting an atmospheric hot water tank as defined in claim 4 comprising the steps of:
(1) A plurality of ventilation devices are arranged at the top of the water tank, and the pretightening force of the elastic piece is determined according to a preset pressure threshold value in the hot water tank;
(2) When the pressure in the hot water tank does not reach the preset pressure threshold value in the hot water tank, the valve assemblies in the ventilation devices are positioned in the valve seats under the action of the pretightening force provided by the elastic pieces, condensed water in the heat exchange tubes in the ventilation devices promotes gaps between the valve assemblies and the valve seats to be water film sealing, at the moment, the valve assemblies are in a cut-off state, when the pressure in the hot water tank reaches the preset pressure threshold value in the hot water tank, the pretightening force of the elastic pieces can be overcome, the valve assemblies and the valve seats are pushed to be misplaced, a sealing water film between the valve assemblies and the valve seats is damaged, the valve assemblies are in an open state, the hot water tank is communicated with the external environment, and in a ventilation process, until the pressure difference between the inside of the hot water tank and the external environment cannot overcome the restoring force of the elastic pieces, the valve assemblies are driven by the restoring force of the elastic pieces to return to the valve seats again, and the next hot water tank is closed and ventilation circulation process is carried out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710282488.5A CN107255180B (en) | 2017-04-26 | 2017-04-26 | Atmospheric hot water tank and ventilation device and ventilation method thereof |
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| CN201710282488.5A CN107255180B (en) | 2017-04-26 | 2017-04-26 | Atmospheric hot water tank and ventilation device and ventilation method thereof |
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| CN107255180B true CN107255180B (en) | 2023-05-26 |
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| FR3143085A1 (en) * | 2022-12-08 | 2024-06-14 | Safran Aircraft Engines | ANTI-SIPHON VALVE AND HYDRAULIC SYSTEM COMPRISING A CYLINDER ASSOCIATED WITH SUCH A VALVE |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4180093A (en) * | 1976-08-24 | 1979-12-25 | Taisei Kosan Kabushiki Kaisha | Air pressure control apparatus for a hot or cold storage chamber |
| JP3944706B2 (en) * | 2002-02-14 | 2007-07-18 | 株式会社ニフコ | 2-way valve |
| CN2846947Y (en) * | 2005-12-08 | 2006-12-13 | 武军 | Air ventilation heat insulation valve for water tank of water heater |
| CN201028080Y (en) * | 2007-02-09 | 2008-02-27 | 刘博成 | Respiration valve of thermal water tank |
| CN205137966U (en) * | 2015-09-30 | 2016-04-06 | 常州布鲁克林太阳能有限公司 | Low latitudes solar water heater uses dual -purpose water tank |
| CN106051245B (en) * | 2016-06-30 | 2018-05-25 | 江苏金荣森制冷科技有限公司 | Adjusting flexible plunger type bidirection press relief valve |
| CN206972997U (en) * | 2017-04-26 | 2018-02-06 | 南京艾普太阳能设备有限公司 | Atmospheric hot-water case and its gas permeable devices |
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