US3527256A - Nine-way valve for inverting cycle providing both a perfect heat pump and a refrigerator pump circuit,and circuit obtained by said valve - Google Patents
Nine-way valve for inverting cycle providing both a perfect heat pump and a refrigerator pump circuit,and circuit obtained by said valve Download PDFInfo
- Publication number
- US3527256A US3527256A US3527256DA US3527256A US 3527256 A US3527256 A US 3527256A US 3527256D A US3527256D A US 3527256DA US 3527256 A US3527256 A US 3527256A
- Authority
- US
- United States
- Prior art keywords
- circuit
- valve
- way valve
- core
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/0279—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using nine-way valves
-
- 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
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86879—Reciprocating valve unit
Definitions
- the basic feature of the present valve is that the movable member, Le. the distribution piston, is subjected to radially balanced internal pressures, whereby, whatever the means for controlling it may be substantial forces are not required for displacements thereof, because it is highly slidable within the seating cylinder even on operation.
- the present valve owing to its internal balance-can be controlled by a suitable electrovalve (core movement) through the difference in pressure provided by the compressor forming part of the unit.
- the particular counterow circuit can be carried out indeed, owing to the provision of the present valve according to the invention.
- the valve of course, is connected to several conduits, by which highly significant advantages are obtained as to eiiciency and operation, in addition to the practical advantage of removing a filter, two check 'valves and a thermostatic valve.
- the valve comprises a cylinder, internally of which a core is adapted for a sealing movement, four longitudinal channels being formed in said core, two of these channels being peripheral at opposite locations and the other two internal are on a plane perpendicular to the plane of the former; four independent radial connecting members, two of which communicating with two inner channels; nine radial unions connecting the outer conduits communicating with the cylinder interior, six of said nine unions being coaxial ⁇ by pairs and coplanar on a plane perpendicular to the plane on which the other three unions are located, two of the latter in a coaxial pair on the same plane of the extreme right-hand pair in the other three pairs, the third union being located on the plane perpendicular to the extreme left-hand pair thereof.
- the valve according to the present invention substantially provides a circuit attainable by a similar eleven-way valve, or four threeeway valves and a two-way valve suitably controlled and connected.
- a further significant feature of the circuit as provided by the present valve is in the constantly unidirectional flow of the liuid, while cycle change is provided by varying the pressure areas and the physical state of the gas.
- FIGS. 1 and 2 are mutually perpendicular longitudinal sectional Views of the valve, in which the core is moved to the left;
- FIGS. 3 and 4 are two cross-sections of the same valve taken along lines 3 3 and 4-4 of FIG. 1, respectively;
- FIGS. 5 and 6 are views similar to FIGS. l and 2, in which the core is moved to the right;
- FIGS. 7 and 8 are two cross-sections of the same valve taken along lines 7--7 and 8-8 of IFIG. 5, respectively;
- FIG. 9 shows a common direction inverting circuit
- FIGS. l0 and 11 show the single direction circuit according to the present invention.
- the nine-way valve comprises a cylinder 12, in which a core 13 is controllably moved, the sealing for said core being ensured by annular gaskets 14; provisions are made along the periphery of said core 13 for two diametrically opposite channels 15 and two inner channels 16, the latter being coplanar and symmetrical to the axis and perpendicular to the former, and adapted for communicating with the outside through sector connecting members 17 at the left end; said core 13 additionally has sector connecting members 18 at the right end and intermediate holes 19; all of these connections are coplanar in the sectional view of FIG. 1.
- core 13 is adapted to be controlled from the outside by mechanical or pneumo-hydraulic means.
- Cylinder 12 is made fast with a first set of six unions arranged in three coaxial and coplanar pairs 2021, 2021' and 20"-21"; said pairs are located at the middle portion of the cylinder and the mutual position thereof (FIG. l) is such that as the first and second pairs are connected by channels 15, the third pair communicates through sector connecting members 18 with the perpendicular and coplanar pair 22-23.
- the connections will be as follows: the second and third pair (FIG.
- a cycle inverting nine-way valve providing a heat and refrigerator pump circuit characterised in that said circuit is unidirectional for both cases, the valve comprises a cylinder in which a core can be moved to two extreme positions, in said core there are four longitudinal channels, two of which are peripheral and the other two internal; four independent radial connecting passages two of which communicate with the two inner channels; nine radial unions connecting the outer conduits communicating with the valve interior, six of which being coaxial by pairs and coplanar on a plane perpendicular to the plane containing the other three unions, two of the latter being coaxial and on the same plane of the rightmost pair of the other three pairs, Whilst the third union is on a plane perpendicular to the leftmost pair thereof.
- a nine-way valve according to claim 1 characterized in that said two diametrically opposite and symmetrical peripheral channels extend so as to connect only two pairs of unions in both core positions.
- a nine way valve according to claim 1 characterized in that said two inner channels, which are more extended than the former and moved to the left, have at the ends thereof substantially sector connecting members for a right angle interconnection of two adjacent unions.
- a nine way valve according to claim 1 characterized in that the intermediate connecting members radially and coaxially extend by pair from the inner channels.
- a valve according to claim 1 characterized in that in all cases the pressure distribution on said core by the fluid from the unions is so balanced that said core will move within said cylinder free of localized frictions.
- a valve according to claim 1 characterized in that the sealing for said core is ensured by annular gaskets.
- a valve according to claim 1 characterized in that the control for said core is carried out by any preferred means through the cylinder heads.
- a heat and cold pump circuit provided by the valve according to claim 1, characterized in that by the provision of only one thermostatic valve and one iilter, the circuit provides for a unidirectional flow in both cases; and on cycle inversion said circuit has an additional parallel circuit for cancelling the resistance generated [by the change of the pressure area.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Temperature-Responsive Valves (AREA)
Description
Sept. 8, 1970 A. COLOMBO 3,527,255
NINE-'WAY VALVE FOR INVERTING CYCLE PROVIDING BOTH A PERFECT HEAT PUMP AND A REFRIGERATOR PUMP CIRCUIT, `ND
CIRCUIT OBTINED- BY1SAID `VLIVE' Fild Sept. 16, 1968 2 SheetS-'Sheet l /4 /7 @f2/6E 19A/f INVENTOR. AN GELD coLoM Bo Sept. 8, 1970 A. COLOMBO 3,527,256
NINE-WAY VALVE FCE INVEETINC CYCLE PROVIDING BOTE A PERFECT HEAT PUMP AND A EEFEICERATOE PUMP CIRCUIT, AND CIRCUIT OBTAINED BY; SAID VALVE Filed Sept. 1.6, 1968 2 Sheets-Sheet z INVENTOR. ANGEL 0 COLOMBO MEA United States Patent O 3,527,256 NINE-WAY VALVE FOR INVERTING CYCLE PROVIDING BOTH A PERFECT HEAT PUMP AND A REFRIGERATOR PUMP CIRCUIT, AND CIRCUIT OBTAINED BY SAID VALVE Angelo Colombo, Via Wildt 14, Milan, Italy Filed Sept. 16, 1968, Ser. No. 769,468 Claims priority, application Italy, Sept. 15, 1967, 20 498/67 Inf. C1.F16k 11/07 U.S. Cl.I IS7- 625.48 8 Claims ABSTRACT OF THE DISCLOSURE This invention relates to a nine-way valve for inverting the cycle of a pump circuit. By the valve according to the invention, a perfect circuit is provided both as to cooling and heating the fluids being counterowing in both cases.
As to structure and operation, the basic feature of the present valve is that the movable member, Le. the distribution piston, is subjected to radially balanced internal pressures, whereby, whatever the means for controlling it may be substantial forces are not required for displacements thereof, because it is highly slidable within the seating cylinder even on operation. Indeed, the present valveowing to its internal balance-can be controlled by a suitable electrovalve (core movement) through the difference in pressure provided by the compressor forming part of the unit.
The particular counterow circuit can be carried out indeed, owing to the provision of the present valve according to the invention. The valve, of course, is connected to several conduits, by which highly significant advantages are obtained as to eiiciency and operation, in addition to the practical advantage of removing a filter, two check 'valves and a thermostatic valve.
The valve comprises a cylinder, internally of which a core is adapted for a sealing movement, four longitudinal channels being formed in said core, two of these channels being peripheral at opposite locations and the other two internal are on a plane perpendicular to the plane of the former; four independent radial connecting members, two of which communicating with two inner channels; nine radial unions connecting the outer conduits communicating with the cylinder interior, six of said nine unions being coaxial `by pairs and coplanar on a plane perpendicular to the plane on which the other three unions are located, two of the latter in a coaxial pair on the same plane of the extreme right-hand pair in the other three pairs, the third union being located on the plane perpendicular to the extreme left-hand pair thereof.
The valve according to the present invention substantially provides a circuit attainable by a similar eleven-way valve, or four threeeway valves and a two-way valve suitably controlled and connected.
A further significant feature of the circuit as provided by the present valve is in the constantly unidirectional flow of the liuid, while cycle change is provided by varying the pressure areas and the physical state of the gas.
For a better understanding, the invention will now be 3,527,256 Patented Sept. 8, 1970 ICC more particularly described with reference to the accompanying drawings showing a preferred, but not restrictive embodiment thereof, changes or modifications being possible as to arrangement or details, particularly where the present valve should be used for functions other than those of the present disclosure and drawings since, as obvious, said changes will fall within the scope of this invention. In the accompanying drawings:
FIGS. 1 and 2 are mutually perpendicular longitudinal sectional Views of the valve, in which the core is moved to the left;
FIGS. 3 and 4 are two cross-sections of the same valve taken along lines 3 3 and 4-4 of FIG. 1, respectively;
FIGS. 5 and 6 are views similar to FIGS. l and 2, in which the core is moved to the right;
FIGS. 7 and 8 are two cross-sections of the same valve taken along lines 7--7 and 8-8 of IFIG. 5, respectively;
FIG. 9 shows a common direction inverting circuit; and FIGS. l0 and 11 show the single direction circuit according to the present invention.
Particularly referring to FIGS. l-6, the nine-way valve comprises a cylinder 12, in which a core 13 is controllably moved, the sealing for said core being ensured by annular gaskets 14; provisions are made along the periphery of said core 13 for two diametrically opposite channels 15 and two inner channels 16, the latter being coplanar and symmetrical to the axis and perpendicular to the former, and adapted for communicating with the outside through sector connecting members 17 at the left end; said core 13 additionally has sector connecting members 18 at the right end and intermediate holes 19; all of these connections are coplanar in the sectional view of FIG. 1.
Through heads 12', core 13 is adapted to be controlled from the outside by mechanical or pneumo-hydraulic means. Cylinder 12 is made fast with a first set of six unions arranged in three coaxial and coplanar pairs 2021, 2021' and 20"-21"; said pairs are located at the middle portion of the cylinder and the mutual position thereof (FIG. l) is such that as the first and second pairs are connected by channels 15, the third pair communicates through sector connecting members 18 with the perpendicular and coplanar pair 22-23. On rightward movement of core 13 the connections will be as follows: the second and third pair (FIG. 5) are connected by channels 15, whilst the first pair is connected by means of sectors 17 through channels 16 and intermediate holes 19 to said perpendicular pair 22-23, in addition to cause connecting member 21 to communicate with connecting members 20-21 (FIGS. 7 and 8). Only at this piston to the right position (FIG. 6) the connecting member 24 is connected with connecting member 22, whilst at the piston to the left position (FIG. 2) said connecting member 24 is blind. When said connecting member 24 is open it communicates with connecting member 21 as Well as connecting member 22 and, as seen from FIGS. 10 and 1l, the circuit external to the valve from unions 24 is in parallel with the circuit from connecting member 21 to liquid dispenser D; this applies only when circuit E (evaporator) operates as a refrigerator (core to the right in FIG. 1() and core to the left in FIG. l). When the core is at left position of FIG. 1l (the core at right position in FIG. 5), circuit E of FIG. l0 becomes condenser C, and conversely condenser C of FIG. 10 becomes E, and therefore the gas in place of liquid will flow through liquid dis penser D. In this case a high resistance will occur in the dispenser to gas passage therethrough, due to the volume increase, i.e. before the refrigerant quantity (q) was liquid, and now the same quantity (q) is gaseous due to the cycle inversion. With its additional circuit in parallel to the dispenser and totally cancelling said resistance, the connecting member 24 here finds its extremely remarkable significance.
In the common circuit of FIG. 9 the two cases are achieved by the inversion of How direction, as shown by dashed lines in the figure, whereby a case will occur in which flow direction is not counterowing; this case further requires a pair of thermostatic valves T, a pair of check valves R and a pair of filters F to be installed.
In both cases. with its nine-way valve V the circuit according to the invention (FIGS. 10 and ll) always provides a unique flow direction, as shown by the arrows in both figures, and a counterfiow passage: in condenser C relative to water flow A and in evaporator E relative to air ow B. As a result, only one thermostatic valve T and one filter F are required in said circuit, check valves R being removed (FIG. 9).
I claim:
1. A cycle inverting nine-way valve providing a heat and refrigerator pump circuit, characterised in that said circuit is unidirectional for both cases, the valve comprises a cylinder in which a core can be moved to two extreme positions, in said core there are four longitudinal channels, two of which are peripheral and the other two internal; four independent radial connecting passages two of which communicate with the two inner channels; nine radial unions connecting the outer conduits communicating with the valve interior, six of which being coaxial by pairs and coplanar on a plane perpendicular to the plane containing the other three unions, two of the latter being coaxial and on the same plane of the rightmost pair of the other three pairs, Whilst the third union is on a plane perpendicular to the leftmost pair thereof.
2. A nine-way valve according to claim 1, characterized in that said two diametrically opposite and symmetrical peripheral channels extend so as to connect only two pairs of unions in both core positions.
3. A nine way valve according to claim 1, characterized in that said two inner channels, which are more extended than the former and moved to the left, have at the ends thereof substantially sector connecting members for a right angle interconnection of two adjacent unions.
4. A nine way valve according to claim 1, characterized in that the intermediate connecting members radially and coaxially extend by pair from the inner channels.
5. A valve according to claim 1, characterized in that in all cases the pressure distribution on said core by the fluid from the unions is so balanced that said core will move within said cylinder free of localized frictions.
6. A valve according to claim 1, characterized in that the sealing for said core is ensured by annular gaskets.
7. A valve according to claim 1, characterized in that the control for said core is carried out by any preferred means through the cylinder heads.
8. A heat and cold pump circuit provided by the valve according to claim 1, characterized in that by the provision of only one thermostatic valve and one iilter, the circuit provides for a unidirectional flow in both cases; and on cycle inversion said circuit has an additional parallel circuit for cancelling the resistance generated [by the change of the pressure area.
References Cited UNITED STATES PATENTS 2,991,631 7/1961 Ray 137-625.48 X
M. CARY NELSON, Primary Examiner M. O. STURM, Assistant Examiner
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2049867 | 1967-09-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3527256A true US3527256A (en) | 1970-09-08 |
Family
ID=11167833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US3527256D Expired - Lifetime US3527256A (en) | 1967-09-15 | 1968-09-16 | Nine-way valve for inverting cycle providing both a perfect heat pump and a refrigerator pump circuit,and circuit obtained by said valve |
Country Status (2)
Country | Link |
---|---|
US (1) | US3527256A (en) |
NL (1) | NL6717616A (en) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2821489A1 (en) * | 1978-05-17 | 1979-11-22 | Danfoss As | VALVE ARRANGEMENT WITH TWO SLIDING VALVE PARTS |
US4306422A (en) * | 1979-12-31 | 1981-12-22 | Korycki Leszek S | Heat pump system |
US4406306A (en) * | 1982-03-19 | 1983-09-27 | Eaton Corporation | Heat pump switchover valve |
US4580602A (en) * | 1983-12-05 | 1986-04-08 | Acraloc, Inc. | Fluid control valve |
US4960139A (en) * | 1988-09-30 | 1990-10-02 | Industrie Zanussi Spa | Water flow distributor for a washing machine |
EP0714004A2 (en) * | 1994-11-24 | 1996-05-29 | SANYO ELECTRIC Co., Ltd. | Refrigerant flow amount control valve and refrigerating apparatus therewith |
EP0685693A3 (en) * | 1994-05-31 | 1997-01-08 | Sanyo Electric Co | Refrigeration cycle using six-way change-over valve. |
WO1999028661A1 (en) * | 1997-12-02 | 1999-06-10 | Gas Research Institute | Absorption cooling and heating refrigeration system flow valve |
WO2002065004A1 (en) * | 2001-01-18 | 2002-08-22 | Roho, Inc. | Valve for zoned cellular cushion |
US6687936B2 (en) | 2001-01-18 | 2004-02-10 | Roho, Inc. | Valve for zoned cellular cushion |
US6698452B2 (en) * | 2000-01-19 | 2004-03-02 | Emerson Electric Co. | Cycle reversing valve for use in heat pumps |
NL1037698C2 (en) * | 2010-02-09 | 2011-08-10 | Jurgen Verwoert | SANITARY FAUCET WITH PRESSURE NEUTRAL CERAMIC ELEMENTS, DRIVEN BY STEP MOTORS IN COMBINATION WITH MECHANICAL FRAMEWORKS AND CONTROLLED BY A LIQUID-TIGHT GLASS TEMPERATURE SENSOR UNIT. |
CN102374310A (en) * | 2011-10-31 | 2012-03-14 | 中联重科股份有限公司 | High/low pressure conversion device and pumping system |
CN102506187A (en) * | 2011-10-31 | 2012-06-20 | 中联重科股份有限公司 | Valve spool and valve with same |
FR2988459A1 (en) * | 2012-03-23 | 2013-09-27 | Peugeot Citroen Automobiles Sa | Multi-channel valve for use in air-conditioning/heating installation of automobile, has body comprising two recesses that allow passage of fluid from inlet toward first outlet or second outlet according to position of body |
WO2014076087A1 (en) * | 2012-11-13 | 2014-05-22 | Bs2 Ag | Valve for changing over the heat flows of a heat pump, taking into account the flow direction reversal in a heat exchanger connected during heating operation to the source side of the heat pump |
CN103883513A (en) * | 2014-04-18 | 2014-06-25 | 湖南德尚源耐磨工业有限公司 | Multi-channel wear-resisting type mortar pump valve with self-compensating device |
CN104676048A (en) * | 2013-04-28 | 2015-06-03 | 浙江盾安机械有限公司 | Four-way valve |
US20160031291A1 (en) * | 2013-04-05 | 2016-02-04 | Denso Corporation | Thermal management system for vehicle |
CN112543709A (en) * | 2020-09-22 | 2021-03-23 | 华为技术有限公司 | Thermal management system and electric automobile |
CN115164453A (en) * | 2022-07-28 | 2022-10-11 | 湖南三一工业职业技术学院 | Switching device for switching flow direction of heat transfer medium of heat pump air conditioner and using method |
US20220333696A1 (en) * | 2019-09-19 | 2022-10-20 | Fujikoki Corporation | Flow passage switching valve |
CN116044561A (en) * | 2023-01-18 | 2023-05-02 | 重庆赛力斯新能源汽车设计院有限公司 | Automobile heat management system and automobile end control system |
CN116044561B (en) * | 2023-01-18 | 2024-06-11 | 重庆赛力斯新能源汽车设计院有限公司 | Automobile heat management system and automobile end control system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2991631A (en) * | 1959-08-24 | 1961-07-11 | Gen Controls Co | Reverse cycle refrigeration system and four-way transfer valve for same |
-
1967
- 1967-12-22 NL NL6717616A patent/NL6717616A/xx unknown
-
1968
- 1968-09-16 US US3527256D patent/US3527256A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2991631A (en) * | 1959-08-24 | 1961-07-11 | Gen Controls Co | Reverse cycle refrigeration system and four-way transfer valve for same |
Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2821489A1 (en) * | 1978-05-17 | 1979-11-22 | Danfoss As | VALVE ARRANGEMENT WITH TWO SLIDING VALVE PARTS |
US4306422A (en) * | 1979-12-31 | 1981-12-22 | Korycki Leszek S | Heat pump system |
US4406306A (en) * | 1982-03-19 | 1983-09-27 | Eaton Corporation | Heat pump switchover valve |
US4580602A (en) * | 1983-12-05 | 1986-04-08 | Acraloc, Inc. | Fluid control valve |
US4960139A (en) * | 1988-09-30 | 1990-10-02 | Industrie Zanussi Spa | Water flow distributor for a washing machine |
EP0685693A3 (en) * | 1994-05-31 | 1997-01-08 | Sanyo Electric Co | Refrigeration cycle using six-way change-over valve. |
EP0714004A2 (en) * | 1994-11-24 | 1996-05-29 | SANYO ELECTRIC Co., Ltd. | Refrigerant flow amount control valve and refrigerating apparatus therewith |
EP0714004A3 (en) * | 1994-11-24 | 1997-02-26 | Sanyo Electric Co | Refrigerant flow amount control valve and refrigerating apparatus therewith |
WO1999028661A1 (en) * | 1997-12-02 | 1999-06-10 | Gas Research Institute | Absorption cooling and heating refrigeration system flow valve |
US6698452B2 (en) * | 2000-01-19 | 2004-03-02 | Emerson Electric Co. | Cycle reversing valve for use in heat pumps |
WO2002065004A1 (en) * | 2001-01-18 | 2002-08-22 | Roho, Inc. | Valve for zoned cellular cushion |
US6564410B2 (en) | 2001-01-18 | 2003-05-20 | Roho, Inc. | Valve for zoned cellular cushion |
US6687936B2 (en) | 2001-01-18 | 2004-02-10 | Roho, Inc. | Valve for zoned cellular cushion |
WO2004028307A1 (en) * | 2002-09-26 | 2004-04-08 | Roho, Inc. | Valve for zoned cellular cushion |
KR100710129B1 (en) * | 2002-09-26 | 2007-04-20 | 로호 인코포레이티드 | Valve for zoned cellular cushion |
NL1037698C2 (en) * | 2010-02-09 | 2011-08-10 | Jurgen Verwoert | SANITARY FAUCET WITH PRESSURE NEUTRAL CERAMIC ELEMENTS, DRIVEN BY STEP MOTORS IN COMBINATION WITH MECHANICAL FRAMEWORKS AND CONTROLLED BY A LIQUID-TIGHT GLASS TEMPERATURE SENSOR UNIT. |
CN102374310B (en) * | 2011-10-31 | 2013-01-23 | 中联重科股份有限公司 | High/low pressure conversion device and pumping system |
CN102374310A (en) * | 2011-10-31 | 2012-03-14 | 中联重科股份有限公司 | High/low pressure conversion device and pumping system |
CN102506187A (en) * | 2011-10-31 | 2012-06-20 | 中联重科股份有限公司 | Valve spool and valve with same |
FR2988459A1 (en) * | 2012-03-23 | 2013-09-27 | Peugeot Citroen Automobiles Sa | Multi-channel valve for use in air-conditioning/heating installation of automobile, has body comprising two recesses that allow passage of fluid from inlet toward first outlet or second outlet according to position of body |
WO2014076087A1 (en) * | 2012-11-13 | 2014-05-22 | Bs2 Ag | Valve for changing over the heat flows of a heat pump, taking into account the flow direction reversal in a heat exchanger connected during heating operation to the source side of the heat pump |
US10183548B2 (en) * | 2013-04-05 | 2019-01-22 | Denso Corporation | Thermal management system for vehicle |
US20160031291A1 (en) * | 2013-04-05 | 2016-02-04 | Denso Corporation | Thermal management system for vehicle |
CN104676048A (en) * | 2013-04-28 | 2015-06-03 | 浙江盾安机械有限公司 | Four-way valve |
CN104676048B (en) * | 2013-04-28 | 2018-10-09 | 浙江盾安机械有限公司 | A kind of four-way valve |
CN103883513A (en) * | 2014-04-18 | 2014-06-25 | 湖南德尚源耐磨工业有限公司 | Multi-channel wear-resisting type mortar pump valve with self-compensating device |
US20220333696A1 (en) * | 2019-09-19 | 2022-10-20 | Fujikoki Corporation | Flow passage switching valve |
CN112543709A (en) * | 2020-09-22 | 2021-03-23 | 华为技术有限公司 | Thermal management system and electric automobile |
CN115626023A (en) * | 2020-09-22 | 2023-01-20 | 华为技术有限公司 | Thermal management system and electric automobile |
CN116001513A (en) * | 2020-09-22 | 2023-04-25 | 华为技术有限公司 | Thermal management system and electric automobile |
CN116001513B (en) * | 2020-09-22 | 2024-03-01 | 华为技术有限公司 | Valve body assembly, control method, thermal management system and electric automobile |
CN115626023B (en) * | 2020-09-22 | 2024-03-01 | 华为技术有限公司 | Thermal management system and electric automobile |
EP4215411A4 (en) * | 2020-09-22 | 2024-05-22 | Huawei Tech Co Ltd | Thermal management system and electric vehicle |
CN115164453A (en) * | 2022-07-28 | 2022-10-11 | 湖南三一工业职业技术学院 | Switching device for switching flow direction of heat transfer medium of heat pump air conditioner and using method |
CN116044561A (en) * | 2023-01-18 | 2023-05-02 | 重庆赛力斯新能源汽车设计院有限公司 | Automobile heat management system and automobile end control system |
CN116044561B (en) * | 2023-01-18 | 2024-06-11 | 重庆赛力斯新能源汽车设计院有限公司 | Automobile heat management system and automobile end control system |
Also Published As
Publication number | Publication date |
---|---|
NL6717616A (en) | 1969-03-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3527256A (en) | Nine-way valve for inverting cycle providing both a perfect heat pump and a refrigerator pump circuit,and circuit obtained by said valve | |
US2976701A (en) | Reversing valve for refrigerating systems | |
US3032312A (en) | Reversing valves | |
US4526201A (en) | Four-way valve with internal pilot | |
US4448211A (en) | Three-way valve | |
US2741264A (en) | Reversing valves | |
US3267965A (en) | Pilot operated spool valve | |
JPS5911231Y2 (en) | Reversing valve for reversible refrigeration cycle | |
US2991631A (en) | Reverse cycle refrigeration system and four-way transfer valve for same | |
US4027700A (en) | Reversing valve construction | |
US2708561A (en) | Four-way valve | |
US2714394A (en) | Four-way change-over valve | |
US2704649A (en) | Control valve for reversible refrigerating system | |
US2669417A (en) | Balanced slide valve for high hydraulic pressures | |
US3282295A (en) | Mixing valve | |
US2927606A (en) | Valve mechanism | |
US2814309A (en) | Hydraulic control valve | |
JP3774334B2 (en) | Four-way selector valve | |
US4248058A (en) | Differential piston type reversing valve construction, system utilizing the same and method of making | |
US5131240A (en) | Air conditioning apparatus | |
US3534763A (en) | Inline valve | |
US3158006A (en) | Reverse cycle refrigeration apparatus | |
US2691990A (en) | Selector valve | |
US4221237A (en) | Refrigeration heat pump changeover valve assembly | |
US3823725A (en) | Pneumatic control apparatus |