WO1999051823A1 - Frostschutzvorrichtung - Google Patents
Frostschutzvorrichtung Download PDFInfo
- Publication number
- WO1999051823A1 WO1999051823A1 PCT/DE1999/000471 DE9900471W WO9951823A1 WO 1999051823 A1 WO1999051823 A1 WO 1999051823A1 DE 9900471 W DE9900471 W DE 9900471W WO 9951823 A1 WO9951823 A1 WO 9951823A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- protection device
- frost protection
- pressure relief
- valve body
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 230000008014 freezing Effects 0.000 claims abstract description 15
- 238000007710 freezing Methods 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 11
- 241001465754 Metazoa Species 0.000 claims description 7
- 230000002528 anti-freeze Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 108010053481 Antifreeze Proteins Proteins 0.000 claims description 2
- 241000283690 Bos taurus Species 0.000 claims description 2
- 230000035622 drinking Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000001771 impaired effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K7/00—Watering equipment for stock or game
- A01K7/02—Automatic devices ; Medication dispensers
- A01K7/027—Drinking equipment with water heaters, coolers or means for preventing freezing
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/09—Component parts or accessories
- E03B7/10—Devices preventing bursting of pipes by freezing
-
- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
-
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
-
- 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
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/1189—Freeze condition responsive safety systems
- Y10T137/1244—With freeze waste
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/1189—Freeze condition responsive safety systems
- Y10T137/1353—Low temperature responsive drains
Definitions
- the invention relates to a frost protection device for preventing the freezing of outdoor or in temporarily supercooled rooms, filled with water at a certain excess pressure and forming a flow path for the water, particularly in the area of fittings, according to the preamble of the main claim.
- heating coils or other heating devices It is known to protect water line sections in frost-prone areas against freezing by attaching heating coils or other heating devices directly to the water line pipes. Thermal insulation can also be applied. While the insulation can make it difficult or prevent access to the lines because no fittings are allowed to open into the open, heating devices are generally very expensive to manufacture and assemble and disadvantageous due to ongoing energy consumption.
- the known heating coils do not provide adequate frost protection in the area of horse drinkers or other fittings if only the water-supplying pipe sections are heated. For this reason, plastic plugs are provided on many horse drinkers in the frost-prone fitting area, for example, which should break open when the overpressure occurs when the water freezes, in order to prevent the horse drinker from breaking.
- Such a pressure relief valve has a valve seat which communicates with the line section to be monitored and which cooperates with a movable valve body for sealing the line section, the valve body being biased into a closed position such that the pressure relief valve is closed at normal overpressure and when the pressure rises due to freezing of the water opens to drain a quantity of water from the pipe section. Since theoretically the freezing of pipes or the like.
- valve parts attached to the inside of the line create flow obstacles which, on the one hand, impair the free flow through the line sections in normal operation and, on the other hand, form preferred deposits for deposits that gradually clog a line and could therefore render it unusable.
- the frost protection device according to the invention with the features of claim 1 has the advantage that the flow in the monitored line section is not disturbed or impaired by parts of the frost protection device. This is achieved in that the valve seat is arranged at a distance from the flow path outside the flow path in a branch which is in constant communication with the line section. It has surprisingly been found that the function of such frost protection devices is reliably ensured, although contrary to the teachings of the prior art mentioned, the valve seat area is not in the axial area of the flow path to be monitored. By using a branch to the monitored line section there are also advantages with regard to the freedom of the spatial arrangement of the pressure relief valve in relation to the monitored line or the fitting. Tests have shown that the invention can reliably prevent freezing at least down to -15 ° C.
- the application of the invention is not to animal drinkers, such as horse drinkers, edge drinkers, pig drinkers or the like. restricted, in which pipe sections and / or fittings are very often in frost-prone areas, especially when the animals are kept free again. Frost protection problems in the area of water supply for caravans and the like, on campsites, in gardens, garages etc. can also be reliably solved by the invention.
- the branch is aligned or aligned essentially vertically, so that the outflow of water is supported by gravity due to frost-related overpressure.
- the branch has an end face facing away from the monitored line section and the pressure relief valve is arranged or can be arranged on the end face of the branch. This allows the Assembly are made easier and flow-favorable, largely straight flow paths are made possible.
- the branch is oriented transversely, preferably essentially perpendicularly, to the flow path of the tap water, the tap preferably being provided on a T-piece that can be installed in the line section.
- the line has a section for forming a coiled flow path which has two partial sections which are preferably at right angles to one another and that the branch is arranged essentially in the extension of a partial section, preferably the partial section on the inlet side.
- the monitored line section is provided in a basic fitting body of an animal trough, in particular a livestock or horse trough, and the pressure relief valve is designed to be screwed into a threaded bore of the fitting body that communicates with the line section.
- the closing force of the valve body is adjustable, preferably continuously. This makes it particularly easy to adapt the frost protection device to the normal water pressure at the installation site. This is particularly advantageous in drinking systems with several cattle or horse drinks or the like attached to a supply line at a distance from one another, since the water pressures prevailing at the installation location of the individual drinking troughs can be very different.
- the setting can be made separately for each valve, for example, so that the pressure relief valve is just closed at ambient temperatures of approx. 5 to approx. 30 ° C. and then opens automatically slightly and temporarily when the temperature drops towards the freezing point.
- the pressure relief valve has a cylindrical, sleeve-shaped valve housing in which a valve body, preferably designed as a piston and spring-loaded by means of a compression spring, is movably guided.
- the valve housing preferably has at its upper end a connecting piece and at its lower end an axial thread for an adjusting screw engaging therein, on which the compression spring is supported, which on the other hand presses against the valve seat facing away from the underside of the valve body.
- the valve body In the closed valve position, the valve body can seal outlet openings formed on the valve housing with respect to the connecting piece and release them in the open position or connect them to the monitored line section.
- the connecting piece has an external thread, which enables the pressure relief valve to be connected in an uncomplicated manner, in particular without soldering or welding, for example in the receiving bore described for the frost protection plastic plug or on an internally threaded front end of a branch on a T-piece or also in a suitably dimensioned threaded hole in a pipe, fitting or tank wall.
- the branch can be partially or essentially completely formed by the connection piece, which is preferably formed in one piece with the valve housing.
- the sleeve-shaped valve housing can be easily made of metal, e.g. Manufacture brass or plastic, in particular POM, whereby the manufacturing costs can be kept very low.
- the outer circumference can be essentially circular-cylindrical, but possibly also have a hexagonal configuration at least in sections, in order to make it possible to conveniently screw on the pressure relief valve by means of a suitable open-ended spanner or a pipe wrench or the like. If necessary, the installation can also be carried out without tools, i.e. by hand. For this, an at least partially non-circular, e.g. hexagonal outer contour is also an advantage.
- At least one O-ring or. a round cord seal attached.
- the valve seat in the valve housing can be formed by a round cord seal or an O-ring, against which the valve body, for example. with its end face or a conical ring surface in the closed position of the valve.
- a sealing ring with corresponding sealing properties can also be used.
- a ball in particular made of rubber, can also be provided as the valve body.
- one or more outlet openings are provided in the wall of the valve housing, which are particularly simple as bore holes s can be educated. If the frost protection device opens its valve, the water can flow out of the area at risk of frost via the outlet openings, so that this flow movement prevents freezing.
- the seal on the piston prevents water from penetrating into the space of the valve housing containing the compression spring and possibly impairing the function of the valve by freezing there.
- FIG. 1 shows an embodiment of a frost protection device in partial longitudinal section
- FIG. 2 shows a longitudinal section of the piston used in the frost protection device of FIG. 1
- Fig. 3 is a plan view of the underside of the frost protection device of Fig. 1 and
- FIG. 4 shows a schematic illustration of a horse watering device with the frost protection device from FIG. 1.
- the frost protection device 1 shown in FIG. 1 consists essentially of overpressure.
- Pressure relief valve 2 which is a sleeve-shaped, relatively thin-walled, essentially cylindrical, valve-shaped valve housing 3 made of metal, e.g. made of corrosion-resistant brass.
- the valve housing can also be inexpensively made of a suitable plastic material, e.g. POM.
- a connecting piece 4 with an external thread 5 is formed in one piece with the valve housing.
- a sealing ring 6 which surrounds the connecting piece 4 at the transition to the circular cylindrical part of the valve housing enables simple sealing in the area of the respective connection point.
- a ring with six radial bores 18 of approximately 1 mm diameter distributed around the circumference of the valve housing is provided in the valve housing wall.
- this has the outer contour of a hexagon nut (see also Fig. 3). In this area, an appropriate tool for mounting, i.e. screwing in or unscrewing the frost protection device, can be used.
- the outer contour can e.g. can also be hexagonal over its entire length, which also favors possible manual installation.
- the pressure relief valve 2 is on the end face of a radial branch 7 of a T-piece 8 screwed on.
- the T-piece has a horizontal line section 9 in the example, in the middle of which the branch 7 of the same diameter branches off radially downward.
- the T-piece can be installed in a manner known per se in the frost-prone area of a water pipe in such a way that the flow path of the water flowing through the pipe leads through the pipe section 9, into which the branch opens radially.
- the overpressure valve which is screwed in as far as it will go on the end face of the branch and sealed by the seal 6 to the T-piece, closes approximately flush with the inside of the line 9 at the end of the threaded connector, so that no part of the valve projects into the horizontal flow path and there could disturb the flow.
- an axially movable piston 10 which can also be clearly seen in FIG. 2, is used, which forms the valve body of the pressure relief valve and which is pressed by means of a compression spring 11 against a round cord seal 12 which is at the upper end of the circular-cylindrical region of the inside of the housing at the transition is arranged to a portion tapering conically to the connecting piece 4.
- the round cord seal or the O-ring 12 forms the valve seat of the pressure relief valve 2.
- the sealing ring 6 it preferably consists of a silicone material that is elastic even at frost temperatures.
- the valve seat is arranged outside the flow path through line 9 and is at a distance from it which is essentially determined by the axial length of the threaded connector.
- the end face 13 of the piston facing the valve seat 12 merges in the edge region into a conical annular surface 14 which bears on the O-ring 12 in the closed valve position.
- the compression spring 11 which is designed as a helical spring, is supported on the one hand on the underside of the piston 10 and on the other hand on the top of an axially infinitely adjustable adjusting screw 15, which fits into a at the lower end of the valve housing 3 10
- the top of the adjusting screw 15 like the underside of the piston 10 shown in FIG. 2, has a depression in which the end of the compression spring lies. If the set screw 1 is further screwed into the valve housing 3, the pressure exerted by the compression spring 11 on the piston 10 against the valve seat 12 increases.
- the force with which the piston 10 acts on the valve seat acting as a valve seat Ring 12 rests set so that in frost-free operation, especially at temperatures in the range of about 5 to about 30 ° C, the pressure relief valve just remains in the closed position shown, in which the connected line section 9 is watertight to the outside or to Is sealed inside the pressure relief valve, while it opens when the pressure in the line rises due to frost and clears the path between the line and the outlet openings.
- the setting of the closing force or the adjustment of the switching pressure of the pressure relief valve can be carried out very easily with a normal screwdriver or with another suitable tool, such as a pocket knife or a coin.
- a slot 17 is provided on the underside of the adjusting screw 15 shown in FIG. 3 for inserting the tool.
- a hexagon socket for an Allen key can also be provided, which can make adjustments by unauthorized persons more difficult.
- the frost protection device works as follows. At temperatures above approximately 5 ° C., the water in line 9 is in the liquid state and the pressure relief valve is in the closed position shown in FIG. 1. A connected valve is closed so that the water is in the pipe. If the water temperature drops to 0 ° C when the temperature drops, the immobile water in the monitored line expands below approx. 4 ° C, causing the internal line pressure of the 11
- valve seat in the region of which the sealing ring 12 and the top of the piston 10 cooperate to seal the line, lies outside the flow path which is formed by the line section 9, the distance between the central axis of the monitored line and the area of the valve seat corresponds approximately to two to three times the line radius.
- the flow path itself is not impaired by the attachment of the pressure relief valve insofar as no part of the pressure relief valve screwed into branch 7 projects into the flow path.
- a pressure relief valve of the type shown in FIG. 1 is arranged in the region of a horse trough 26 attached to the end of a water pipe 25.
- the horse watering device has a fitting base body 27, on which a bowl-shaped drinking water tank 28 is attached in one piece.
- a vertically continuous through-channel 29 running in the longitudinal direction thereof, with a one-sided one in the center 12
- Radial canal 30 goes towards the drinking bowl.
- a valve 31 is inserted into this channel, which can be opened by a horse, for example, by pressing an actuating lever 32 articulated in the upper region of the base of the fitting, so that water flows into the drinking container.
- the end of the water line 25 is screwed, while at the opposite lower end the pressure relief valve 2 is screwed with its threaded connector 4 into an internal thread as far as it will go, that is normally for Includes an anti-freeze plastic stopper.
- the screwing in can be done by hand by rotating the entire pressure relief valve relative to the valve body.
- the flow path used in operation between the end of the water pipe and the valve 31 is kinked at right angles and is formed by an upper section 33 of the through hole and by the radial hole 30.
- the lower section 34 of the through-channel 29 forms a branch to which the pressure relief valve is attached on the end face.
- Its inlet opening or its valve seat is an extension of the part of the monitored line section formed by the upper section 33 of the through opening 29, the distance between this line section and the valve seat corresponding to approximately four times the diameter of the monitored line.
- the flow during normal operation of the horse trough is in no way impaired by the frost protection device.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Animal Husbandry (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Safety Valves (AREA)
- Temperature-Responsive Valves (AREA)
- Lift Valve (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/647,758 US6363960B1 (en) | 1998-04-03 | 1999-02-19 | Frost protection device |
EP99911609A EP1068405A1 (de) | 1998-04-03 | 1999-02-19 | Frostschutzvorrichtung |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19814974 | 1998-04-03 | ||
DE19814974.3 | 1998-04-03 | ||
DE19852483.8 | 1998-11-13 | ||
DE19852483 | 1998-11-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999051823A1 true WO1999051823A1 (de) | 1999-10-14 |
Family
ID=26045249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1999/000471 WO1999051823A1 (de) | 1998-04-03 | 1999-02-19 | Frostschutzvorrichtung |
Country Status (4)
Country | Link |
---|---|
US (1) | US6363960B1 (de) |
EP (1) | EP1068405A1 (de) |
DE (1) | DE19907217A1 (de) |
WO (1) | WO1999051823A1 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK199900407Y6 (da) * | 1999-11-17 | 2001-06-08 | Nielsen Hanne Korsgaard | Ventilindretning til selvvanding af husdyr |
DE10121417A1 (de) * | 2001-05-02 | 2002-11-07 | Md Elektrotechnik Gmbh | Frostschutzanlage |
CA2370454C (en) * | 2002-02-04 | 2008-01-29 | James Harold Eugene Squire | Freeze resistant animal watering installation |
KR20040110953A (ko) * | 2003-06-21 | 2004-12-31 | 장성익 | 동파방지용 배관 부속 장치 |
US6883534B2 (en) * | 2003-08-14 | 2005-04-26 | Wcm Industries, Inc. | Freeze protection device for wall hydrants/faucets |
US6830063B1 (en) | 2003-10-09 | 2004-12-14 | Wcm Industries, Inc. | Freezeless protection device for wall hydrants/faucets |
US20070039649A1 (en) * | 2005-08-22 | 2007-02-22 | Wcm Industries, Inc. | Yard hydrant with drain port air line |
US7730901B2 (en) * | 2005-11-01 | 2010-06-08 | Wcm Industries, Inc. | Hydrant roof mount |
GB2452867B (en) * | 2008-10-17 | 2009-08-05 | Cambridge Reactor Design Ltd | A valve assembly |
US20100206392A1 (en) * | 2009-02-18 | 2010-08-19 | Wcm Industries, Inc. | Automatic Draining Freezeless Wall Faucet |
WO2010137749A1 (ko) * | 2009-05-25 | 2010-12-02 | 한국생산기술연구원 | 상변화물질을 이용한 동파 방지 밸브 |
US8307848B2 (en) * | 2009-06-12 | 2012-11-13 | Aerocontrolex Group, Inc. | Freeze resistant manifold assembly and system |
US9386942B2 (en) | 2009-06-26 | 2016-07-12 | Cianna Medical, Inc. | Apparatus, systems, and methods for localizing markers or tissue structures within a body |
US9052024B2 (en) | 2009-11-17 | 2015-06-09 | Finishing Brands Holdings Inc. | Non-intrusive, low chatter pressure relief valve system |
CA2734529C (en) | 2010-03-15 | 2013-11-26 | Wcm Industries, Inc. | Sanitary hydrant |
US9080674B1 (en) | 2013-02-19 | 2015-07-14 | Ronald Lehman | Freeze tolerant ball valve |
KR101301965B1 (ko) * | 2013-03-21 | 2013-08-30 | 유수진 | 수도계량기용 동파방지장치 |
CN103742753B (zh) * | 2014-01-06 | 2016-01-27 | 易科路通轨道设备有限公司 | 套管防冻装置 |
JP6062471B2 (ja) * | 2015-03-13 | 2017-01-18 | 株式会社タカギ | コネクタ |
US9890867B2 (en) | 2016-02-29 | 2018-02-13 | Wcm Industries, Inc. | Sanitary hydrant |
KR102263076B1 (ko) * | 2019-08-21 | 2021-06-09 | 에쓰엠팹 주식회사 | 온도에 따라 배출유량의 제어가 가능한 동파방지밸브 |
CN116025755A (zh) * | 2022-04-27 | 2023-04-28 | 宁波方太厨具有限公司 | 防冻裂阀体及包含其的燃气热水器 |
CN114776883B (zh) * | 2022-04-29 | 2023-12-08 | 嘉兴艾迪西暖通科技有限公司 | 一种注水管道防冻式柱塞阀 |
Citations (4)
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DE827629C (de) | 1940-08-12 | 1952-01-10 | August Sanitary Patents Ltd | Ventil zur Verhuetung von Frostschaeden an Rohren, Ventilen, Kesseln o. dgl. |
US4397266A (en) * | 1979-10-05 | 1983-08-09 | Noland Wayne B | Freeze protected livestock watering device |
US4776362A (en) | 1984-11-07 | 1988-10-11 | Domingue Sr Chris J | Relief valve for fluid line |
FR2707315A1 (fr) * | 1993-07-05 | 1995-01-13 | Barnay Michel | Système de piston à ressort pour éviter aux canalisations d'eau d'éclater lors du gel. |
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CA447072A (en) * | 1948-03-09 | Charles August Frederick | Device for the prevention of burst pipes, valves or vessels caused by freezing | |
US2995140A (en) * | 1961-08-08 | Dsain-a-mattc valve | ||
US1744407A (en) * | 1929-02-11 | 1930-01-21 | John B Meccia | Hopper |
US1878002A (en) * | 1930-11-08 | 1932-09-20 | George W Beatty | Emergency release valve |
US3380464A (en) * | 1965-04-08 | 1968-04-30 | Roy L Arterbury | Thermostatic freezing valve |
US3446226A (en) * | 1967-03-22 | 1969-05-27 | Howard M Canterbury | Automatic hydrant dripping apparatus |
US3464391A (en) * | 1967-10-17 | 1969-09-02 | Klinzing Co Inc A F | Animal drinking fountain |
US3618625A (en) * | 1969-10-29 | 1971-11-09 | William R Walters | Ice axe valve |
DE8205822U1 (de) * | 1982-03-03 | 1982-09-02 | Suevia Haiges GmbH & Co, 7125 Kirchheim | Viehselbsttraenkebecken |
US4437481A (en) * | 1982-05-20 | 1984-03-20 | Chamberlin John M | Self-actuating drip valve |
US4476812A (en) * | 1982-07-23 | 1984-10-16 | H. W. Hart Mfg. Co. | Watering cup |
US4471722A (en) * | 1982-12-21 | 1984-09-18 | H. W. Hart Mfg. Co. | Watering cup |
US4538791A (en) * | 1984-04-10 | 1985-09-03 | Norse Leasing Corp. | Valve mechanism for a livestock watering bowl |
US4967780A (en) * | 1988-05-14 | 1990-11-06 | Mic Co., Ltd. | Anti-freezing device |
US4784173A (en) * | 1988-06-06 | 1988-11-15 | Carney Frederick P | Water freeze prevention valve |
US5715855A (en) * | 1997-02-21 | 1998-02-10 | Bennett; Brady J. | Temperature-activated valve |
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1999
- 1999-02-19 DE DE1999107217 patent/DE19907217A1/de not_active Withdrawn
- 1999-02-19 WO PCT/DE1999/000471 patent/WO1999051823A1/de not_active Application Discontinuation
- 1999-02-19 EP EP99911609A patent/EP1068405A1/de not_active Withdrawn
- 1999-02-19 US US09/647,758 patent/US6363960B1/en not_active Expired - Fee Related
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE827629C (de) | 1940-08-12 | 1952-01-10 | August Sanitary Patents Ltd | Ventil zur Verhuetung von Frostschaeden an Rohren, Ventilen, Kesseln o. dgl. |
US4397266A (en) * | 1979-10-05 | 1983-08-09 | Noland Wayne B | Freeze protected livestock watering device |
US4776362A (en) | 1984-11-07 | 1988-10-11 | Domingue Sr Chris J | Relief valve for fluid line |
FR2707315A1 (fr) * | 1993-07-05 | 1995-01-13 | Barnay Michel | Système de piston à ressort pour éviter aux canalisations d'eau d'éclater lors du gel. |
Also Published As
Publication number | Publication date |
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US6363960B1 (en) | 2002-04-02 |
EP1068405A1 (de) | 2001-01-17 |
DE19907217A1 (de) | 1999-10-07 |
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