Source: http://www.sumobrain.com/patents/wipo/6-way-valve-method-producing/WO2019206510A1.html
Timestamp: 2019-12-05 21:41:16
Document Index: 599052950

Matched Legal Cases: ['art 35', 'art 35', 'art 35', 'art 35', 'art 35', 'art 35', 'art 35', 'art 35', 'art 35', 'art\n4']

6-WAY VALVE AND METHOD FOR PRODUCING A 6-WAY VALVE - BELIMO HOLDING AG
6-WAY VALVE AND METHOD FOR PRODUCING A 6-WAY VALVE
WIPO Patent Application WO/2019/206510
A 6-way valve (100) for controlling two fluidic circuits of an HVAC system comprises a valve housing ( 1 ) and a regulating body (2). The valve housing ( 1 ) comprises consumer supply and return ports (13A, 13B) for connecting the 6-way valve ( 100) to an inlet and an outlet of a consumer device, two source supply ports (11A, 12A) assigned to the consumer supply port (13A), and two source return ports ( 11 B, 12B) assigned to the consumer return port ( 13B). The regulating body (2) is arranged within the housing ( 1 ) and comprises a cylindrical envelope surface. The consumer supply and return ports (13A, 13B), the source supply and return ports (11 A, 12A, 11 B, 12B), and a longitudinal axis of the regulating body (2) define a common plane. The consumer ports (13A, 13B) and the source ports (11 A, 12A, 11 B, 12B) are arranged on opposite sides of the regulating body (2).
WO/2013/125750 APPARATUS FOR REMOTELY DETECTING POSITION
WO/2017/064236 INSTRUMENTED MOTORISED VALVE
KELLER, Urs (Gemeindehausstrasse 8, 8340 Hinwil, 8340, CH)
FREITAG, Alfred Gottlieb (Ellenwis 5, 8133 Esslingen, 8133, CH)
VESELI, Dzemil (Brauereiwiese 11, 9606 Bütschwil, 9606, CH)
JUKES, Andrew (Winkelstrasse 8, 8623 Wetzikon, 8623, CH)
CICERCHIA, Giuseppe (Gübelweg 18, 8442 Hettlingen, 8442, CH)
BAGNO, Marco (Hirschwiese 12, 8730 Uznach, 8730, CH)
MAZENAUER, Philipp (Wagnerfeldstrasse 24, 8646 Wagen, 8646, CH)
CHOI, Shing Wai (21GBlock 16, Chevalier GardenHong Kong Ma On Shan, N.T, Ma On Shan, N.T, CN)
EP2019/056130
F16K37/00; B29C45/00; F16K5/04; F16K11/085; F16K27/06; F24D1/00
WO1999056044A1 1999-11-04
US20070068667A1 2007-03-29
EP0564800A1 1993-10-13
US20110303863A1 2011-12-15
EP3184866A1 2017-06-28
US20170363220A1 2017-12-21
FR1452637A 1966-04-15
US20090165866A1 2009-07-02
EP2169286A2 2010-03-31
US20150316192A1 2015-11-05
US4584781A 1986-04-29
1. A 6-way valve ( 1 00) for controlling two fluidic circuits (C, H) of an HVAC system, the 6-way valve ( 1 00) comprising a valve housing ( 1 ) and a regulating body (2, 2'), the valve housing ( 1 ) comprising a consumer supply port ( 1 3A) for connecting the
6-way valve ( 1 00) to an inlet of a consumer device, a consumer return port ( 1 3 B) for connecting the 6-way valve ( 1 00) to an outlet of the consumer device, two source supply ports ( 1 1 A, 1 2A) assigned to the consumer supply port ( 1 3A), and two source return ports ( 1 1 B, 1 2B) assigned to the consumer return port ( 1 3B), wherein the regulating body ( 2, 2') is at least partially arranged within the housing ( 1 ) and comprises a cylindrical envelope surface, the consumer supply port ( 1 3A), the consumer return port ( 1 3B), the two source supply ports ( 1 1 A, 1 2A), the two source return ports ( 1 1 B, 1 2B), and a longitudinal axis (L) of the regulating body ( 2, 2') define a common plane, the consumer supply port ( 1 3A) and the consumer return port ( 1 3B) are arranged on a first side with respect to the regulating body ( 2, 2'), and the two source supply ports ( 1 1 A, 1 2A) and the two source return ports ( 1 1 B, 1 2B) are arranged on a second side, opposite to the first side with respect to the regulating body ( 2, 2'), and the regulating body (2, 2') is rotatable by a rotation angle about the longitudinal axis
(L) and configured to selectively establish a first fluidic circuit (C), by connecting a first one of the two source supply ports ( 1 1 A, 1 2A) to the consumer supply port ( 1 3A) and simultaneously connecting the consumer return port ( 1 3 B) to a first one of the two source return ports ( 1 1 B, 1 2B), or a second fluidic circuit (H), by con necting a second one of the two source supply ports ( 1 1 A, 1 2A) to the consumer supply port ( 1 3A) and simultaneously connecting the consumer return port ( 1 3B) to a second one of the two source return ports ( 1 1 B, 1 2B), depending on the rota- tion angle.
2. The 6-way valve ( 1 00) according to claim 1 , wherein the regulating body ( 2, 2') comprises first and second separate channels (21 , 22 ) extending through the regulating body (2, 2'), the first channel (21 ) is assigned to the consumer supply port ( 1 3A) and configured to selectively establish a connection between one of the two source supply ports ( 1 1 A, 1 2A) and the consumer supply port ( 1 3A), and the second channel ( 22 ) is assigned to the consumer return port ( 1 3 B) and configured to selectively establish a connection between one of the two source return ports ( 1 1 B, 1 2B) and the consumer return port ( 1 3B).
3. The 6-way valve according to claim 1 , wherein the regulating body comprises a cen- tral stem and first and second separate channels formed by recesses in the regulating body extending around the central stem, wherein the first channel is assigned to the consumer supply port and configured to selectively establish a connection between one of the two source supply ports and the consumer supply port and the second channel is assigned to the consumer return port and configured to selectively estab- lish a connection between one of the two source return ports and the consumer re turn port.
4. The 6-way valve according to one of claims 2 or 3 , wherein the regulating body (2, 2') is configured such that the consumer supply port ( 1 3A) and the consumer return port ( 1 3B) are each connected to the assigned first or the second channel (21 , 22 ), respectively, independent from the rotation angle of the regulating body (2, 2').
5. The 6-way valve ( 1 00) according to one of claims 2 to 4, wherein the regulating body ( 2, 2') comprises a single continuous sealing element (3, 3A', 3 B') configured to selectively fluidically disconnect one of the two source supply ports ( 1 1 A, 1 2A) from the consumer supply port ( 1 3A) and simultaneously one of the two source re turn ports ( 1 1 B, 1 2B) from the consumer return port ( 1 3B), depending on the ro tation angle.
6. The 6-way valve ( 1 00) according to claim 5 , wherein the sealing element (3, 3A') is configured to fluidically disconnect the first channel ( 21 ) and the second channel
( 22) from each other.
7. The 6-way valve ( 1 00) according to claim 5 or 6, wherein the sealing element (3, 3A') is configured to seal a lead-through ( 1 5 ) of the housing ( 1 ), the lead-through ( 1 5 ) receiving a portion (23 ) of the regulating body (2, 2'). 8. The 6-way valve ( 1 00) according to one of claims 5 to 7, wherein the regulating body ( 2, 2') is rotatable into a blocking configuration, the sealing element (3, 3A', 3 B') is configured to establish in said blocking configuration a pressure relief connec tion (4) between at least one of the channels ( 21 , 22 ) and one of: the two source supply ports ( 1 1 A, 1 2A) and the two source return ports ( 1 1 B, 1 2B) , while fluidi- cally disconnecting the respectively remaining others of the two source supply ports
( 1 1 A, 1 2A) and the two source return ports ( 1 1 B, 1 2B), such that fluidic connection between at least one of the consumer supply port ( 1 3A) and the consumer return port ( 1 3B) and one of the two source supply ports ( 1 1 A, 1 2A) and the two source return ports ( 1 1 B, 1 2B) is established only by the pressure relief connection (4).
9. The 6-way valve ( 1 00) according to claim 8, wherein the pressure relief connection (4) is formed by a curved part (35) of the sealing element (3, 3 A', 3B') at one of the two source supply ports ( 1 1 A, 1 2A) or one of the two source return ports ( 1 1 B,
1 2B), the curved part (35 ), in the blocking configuration, crossing said source sup ply port ( 1 1 A, 1 2A) or source return port ( 1 1 B, 1 2B), respectively.
10. The 6-way valve ( 1 00) according to one of claims 5 to 9, wherein the sealing ele ment is designed as a sealing strap (3, 3A', 3B') which is at least partially form-fitted in an undercut formed in the surface of the regulating body (2, 2').
1 1. The 6-way valve according to claim 1 0, wherein the sealing strap (3, 3A', 3B') com prises, in vicinity of the two source supply ports ( 1 1 A, 1 2A) and the two source re turn ports ( 1 1 B, 1 2B), sections (3 1 , 3 1 ') shaped as elongated O-rings extending partially along a perimeter of the cylindrical envelope surface of the regulating body (2, 2') and linear sections (32 ) connecting the sections (3 1 , 31 ') shaped as elon gated O-rings.
12. The 6-way valve ( 1 00) according to claim 1 1 , wherein the sealing element (3, 3A', 3 B') has an increased thickness in the sections (3 1 , 3 1 ') shaped as elongated O- rings compared to the thickness of at least part of the linear sections (32 ). 13. The 6-way valve ( 1 00) according to one of claims 5 or 1 2, wherein the regulating body (2, 2') comprises protruding support ribs ( 25 ) next to sections (3 1 , 31 ') of the sealing element (3, 3A', 3 B'), wherein a height of the support ribs ( 25) is smaller than a height of the sections (31 , 3 1 ') of the sealing element (3, 3A', 3B').
14. The 6-way valve ( 1 00) according to one of claims 5 to 1 3 , wherein the regulating body (2, 2') is produced by two-component plastic injection molding, the regulating body comprises a base body (24, 24') made of a firm first component and the seal ing element (3, 3A', 3 B') is made of an elastic second component.
1 5. The 6-way valve ( 1 00) according to one of claims 1 to 1 4, wherein the regulating body (2) comprises a plastic base body ( 24) formed in one piece.
16. The 6-way valve ( 1 00) according to one of claims 1 to 1 4, wherein the regulating body (2') comprises a plastic base body (24') formed by two pieces (241 ', 242') which are plugged onto each other.
17. The 6-way valve ( 1 00) according to one of claims 1 to 1 6, wherein the regulating body (2, 2') comprises an integrated temperature sensor ( 51 , 52).
18. The 6-way valve according to claim 2 and 1 5, wherein the temperature sensor is arranged between the first channel and the second channel and comprises a first probe, reaching into the first channel, and a second probe, reaching into the second channel.
19. The 6-way valve ( 1 00) according to one of claims 1 to 1 8, wherein at least one of: the two source supply ports ( 1 1 A, 1 2A), the two source return ports ( 1 1 B, 1 2B), the consumer supply port ( 1 3A) and the consumer return port ( 1 3 B), comprises a manual flow adjuster ( 1 1 1 , 1 21 ), preferably in the form of a screw element, reach ing into the port ( 1 1 A, 1 2A, 1 1 B, 1 2B).
20. The 6-way valve according to one of claims 1 to 1 9, wherein at least one of: the two source supply ports ( 1 1 A, 1 2A), the two source return ports ( 1 1 B, 1 2B), the con- sumer supply port ( 1 3A) and the consumer return port ( 1 3B), comprises a self-ad justing flow restrictor (7, 7', 7"), configured to regulate the fluid flow over a range of pressure differences across the self-adjusting flow restrictor (7, 7', 7").
21. The 6-way valve ( 1 00) according to one of claims 1 to 20, wherein the regulating body ( 2, 2') is rotatable into a blocking configuration and configured to establish in said blocking configuration a pressure relief connection (4) between at least one of the consumer supply port ( 1 3A) and the consumer return port ( 1 3B) and one of: the two source supply ports ( 1 1 A, 1 2A) and the two source return ports ( 1 1 B, 1 2B) , while fluidically disconnecting the respectively remaining others of the two source supply ports ( 1 1 A, 1 2A) and the two source return ports ( 1 1 B, 1 2B), such that flu- idic connection between at least one of the consumer supply port ( 1 3A) and the consumer return port ( 1 3 B) and one of the two source supply ports ( 1 1 A, 1 2A) and the two source return ports ( 1 1 B, 1 2B) is established only by the pressure relief con nection (4).
22. A method of producing a 6-way valve ( 1 00) according to one of claims 1 to 22, wherein the regulating body ( 2, 2') is provided with a single continuous sealing el ement (3, 3A', 3 B') configured to selectively fluidically disconnect one of the two source supply ports ( 1 1 A, 1 2A) from the consumer supply port ( 1 3A) and simulta neously one of the two source return ports ( 1 1 B, 1 2B) from the consumer return port ( 1 3 B), depending on the rotation angle, and the regulating body (2, 2') and sealing element (3, 3A', 3 B') are produced by two-component plastic injection molding, the regulating body (2, 2') is injection-molded with a firm first component and, subsequently, the sealing element (3, 3A', 3 B') is injection-molded with an elastic second component.
The invention relates to a 6-way valve for controlling two fluidic circuits of an HVAC system and a method for producing a 6-way valve.
In order to achieve climate control and a comfortable room temperature in build ings, HVAC systems use a temperature regulating fluid, such as for example hot and/or cold water. Often two separate circuits with a temperature regulating fluid each, such as a cooling and a heating circuit, are deployed which are hydraulically decoupled and controlled by suitable control valves.
In this respect, 6-way characterized control valves has been shown to represent a versatile solution for controlling chilled beams and cooling or heating ceilings. The 6-way valve can assume the functionality of up to four 2-way control valves or two 3-way control valves, enabling to save space, material and installation time while controlling the separate circuits can be controlled individually and precisely by means of a single, typically rotary, movement.
Such a 6-way valve has for example been described in WO201 5/ 1 73071 A1 of the applicant. The 6-way valve comprises two similar 3-way sub-valves being me- chanically coupled with each other, such that both sub-valves are always in the same position, whereby each sub-valve has three different valve ports and a valve member with an internal connecting channel. The valve member can be moved be tween first and second end positions via an intermediate position such that, in the first end position, the first and third valve ports are connected with each other by means of the connecting channel. In the second end position, the second and third valve ports are connected with each other by means of the connecting channel. In the intermediate position, the connecting channel is disconnected from the first and second valve ports. Specifically, the valve members are spherical balls and the internal connecting channels each extend through a respective ball with a 90° turn- ing between two ball ports, in a plane perpendicular to a common actuating axis. The valve members are each supported by sealed ball seats at the first and second valve ports. The sub-valves are moved between the first and second position by a rotation of 90° around the common actuating axis.
SUMMARY OF THE INVENTION It is an object of the invention to provide a 6-way valve for controlling two fluidic circuits of an HVAC system and a method for producing a 6-way valve which at least partially improves the prior art.
According to the present invention, these objects are achieved by the features of the independent claims. In addition, further advantageous embodiments follow from the dependent claims and the description. According to an aspect of the invention, the object is particularly achieved by a 6- way valve for controlling two fluidic circuits of an HVAC system, the 6-way valve comprising a valve housing and a regulating body, the valve housing comprising a consumer supply port for connecting the 6-way valve to an inlet of a consumer device, a consumer return port for connecting the 6-way valve to an outlet of the consumer device, two source supply ports assigned to the consumer supply port, and two source return ports assigned to the consumer return port, wherein the regulating body is at least partially arranged within the housing and comprises a cylindrical envelope surface. The consumer supply port, the consumer return port, the two source supply ports, the two source return ports, and a longitudinal axis of the regulating body define a common plane, wherein the consumer supply port and the consumer return port are arranged on a first side with respect to the regulating body, and the two source supply ports and the two source return ports are ar ranged on a second side, opposite to the first side with respect to the regulating body. The regulating body is rotatable by a rotation angle about the longitudinal axis and configured to selectively establish a first fluidic circuit, by connecting a first one of the two source supply ports to the consumer supply port and simultaneously connecting the consumer return port to a first one of the two source return ports, or a second fluidic circuit, by connecting a second one of the two source supply ports to the consumer supply port and simultaneously connecting the consumer return port to a second one of the two source return ports, depending on the rota tion angle.
Typically, one of the source supply ports and one of the source return ports are assigned to a first fluidic circuit, for example the cooling circuit, whereas the other source supply port and the other source return port are assigned to a second fluidic circuit, for example the heating circuit. The two fluidic circuits may use a combined heating and cooling element connected to the consumer supply port and the con sumer return port. The consumer supply and return ports, the source supply and return ports and the longitudinal axis of the regulating body defining a common plane allows a planar design of the 6-way valve, which is advantageous in terms of space saving. The arrangement of the consumer supply and return ports on a first side, and the source supply and return ports on a (different) second side with respect to the regulating body further improves space saving, since the consumer and all ducts connecting the 6-way valve to the consumer can be arranged on the first side whereas the ducts connecting the 6-way valve to the respective heating and cooling sources can be arranged on the second side, opposite to the first side with respect to the regu lating body. Thereby, space consuming detours of ducts can be considerably or completely avoided which, in addition, simplifies installation of the 6-way valve.
In an embodiment, the regulating body comprises first and second separate chan nels extending through the regulating body, the first channel is assigned to the con sumer supply port and configured to selectively establish a connection between one of the two source supply ports and the consumer supply port, and the second chan- nel is assigned to the consumer return port and configured to selectively establish a connection between one of the two source return ports and the consumer return port. The first and second separate channels extending through the regulating body pro vides the advantage that deflections of the flow path of the fluid flowing through the 6-way valve, leading to noise and decreased efficiency, can be reduced.
Alternatively, the regulating body may comprise a central stem and first and second separate channels formed by recesses in the regulating body extending around the central stem, wherein the first channel is assigned to the consumer supply port and configured to selectively establish a connection between one of the two source sup ply ports and the consumer supply port and the second channel is assigned to the consumer return port and configured to selectively establish a connection between one of the two source return ports and the consumer return port.
A central stem provides the advantage of increased stability and improved torque transfer while rotating the regulating body. Furthermore, forming recesses around a central stem may simplify manufacturing of the regulating body.
In an embodiment, the regulating body is configured such that the consumer sup- ply port and the consumer return port are each connected to the assigned first or the second channel, respectively, independent from the rotation angle of the reg ulating body.
By using a combined heating and cooling element, it may be sufficient for the reg ulating body to switch between the two source supply ports, to be connected to the first channel, and between the two source return ports, to be connected to the second channel, respectively, in order to switch between heating circuit and cooling circuit, while the consumer supply and consumer return ports may remain con nected to the respective assigned first or second channel.
In an embodiment, the regulating body comprises a single continuous sealing ele ment configured to selectively fluidically disconnect one of the two source supply ports from the consumer supply port and simultaneously one of the two source return ports from the consumer return port, depending on the rotation angle.
Thus, a required fluidic disconnection for switching between the two fluidic circuits can be achieved by a single continuous sealing element, which simplifies the struc ture and increases the reliability of the 6-way valve. In an embodiment, the sealing element is configured to fluidically disconnect the first channel and the second channel from each other.
Optionally, the sealing element is configured to seal a lead-through of the housing, the lead-through receiving a portion of the regulating body.
The sealing element thus provides a simple and versatile solution for fluidically dis- connecting at least one of: the source supply ports, source return ports, the first channel, second channel and the lead-through of the housing by a single element.
In an embodiment, the regulating body is rotatable into a blocking configuration, the sealing element is configured to establish in said blocking configuration a pres sure relief connection between at least one of the channels and one of: the two source supply ports and the two source return ports, while fluidically disconnecting the respectively remaining others of the two source supply ports and the two source return ports, such that fluidic connection between at least one of the consumer supply port and the consumer return port and one of the two source supply ports and the two source return ports is established only by the pressure relief connection. In an embodiment, the pressure relief connection in the blocking configuration is established only between one of the channels and one of the respective source sup ply or return ports. Pressure relief by connecting one of the channels with one of the respective source supply or return ports may especially be sufficient to ensure pressure relief of the consumer, where consumer supply and return port are each connected to the assigned first or the second channel, respectively, independent from the rotation angle of the regulating body. Buildup of a potentially dangerous overpressure in the consumer can be avoided by the pressure relief connection by relieving an overpressure in the consumer into one of the sources of one of the two fluidic circuits. Here, the person skilled in the art understands that the pressure relief connection is designed to relieve an overpressure or an underpressure, i.e. merely to equalize pressure differences, but not to establish a fluidic bypass circuit nor an exhaust connection.
In an embodiment, the pressure relief connection is formed by a curved part of the sealing element at one of the two source supply ports or one of the two source return ports, the curved part, in the blocking configuration, crossing said source supply port or source return port, respectively. In an embodiment, the sealing element is designed as a sealing strap which is at least partially form-fitted in an undercut formed in the surface of the regulating body.
Form-fitting the sealing strap in an undercut reduces the probability of the sealing element to be released, for example due to friction while moving the regulating body, and therefore improves the reliability of the fluidic disconnection provided by the sealing element.
In an embodiment, the sealing strap comprises, in vicinity of the two source supply ports and the two source return ports, sections shaped as elongated O-rings ex- tending partially along a perimeter of the cylindrical envelope surface of the regu lating body and linear sections connecting the sections shaped as elongated 0- rings.
Especially, fluidic disconnection of the source supply or source return ports may be achieved only by the sections shaped as elongated O-rings. The elongated O-rings may extend along a sufficient portion of the perimeter of the cylindrical envelope surface such that the respective source supply or source return ports, where no pressure relief connection is formed, are each fluidically disconnected both in the blocking configuration and when the respective source supply or source return ports are selectively fluidically disconnected from the consumer supply or consumer return port, by the same section shaped as elongated O-ring. The sections shaped as elongated O-rings may be arranged on the cylindrical envelope surface in a man ner that the sections shaped as elongated O-rings run around the respective source supply or return port to be fluidically disconnected. In an embodiment, the sections shaped as elongated O-rings extend along at least the half of the perimeter of the cylindrical envelope surface of the regulating body.
In an embodiment, the pressure relief connection is achieved by a curved part of a section shaped as elongated O-ring, the curved part being offset with respect to respective curved parts of the remaining sections shaped as elongated O-rings, in a manner that the curved part crosses a particular source supply or return port in the blocking configuration.
In an embodiment, the sealing element has an increased thickness in the sections shaped as elongated O-rings compared to the thickness of at least part of the linear sections.
The reduced thickness in the linear sections provides the advantage that the linear sections with smaller thickness do not contribute to sealing contact between the sealing element and an inner surface of the housing, such that friction can be re- duced and the torque be lowered.
The sealing element may comprise additional sections, especially with increased thickness, for additional sealing, for example for sealing the lead-through of the housing, or fluidically disconnecting the first and second channel.
In an embodiment, the regulating body comprises protruding support ribs next to sections of the sealing element, wherein a height of the support ribs is smaller than a height of the sections of the sealing element. The sections of the sealing element with a height larger than the height of the sup port ribs may be the sections shaped as elongated O-rings.
The support ribs have the advantage that overload of the sections of the sealing element, such as the sections shaped as elongated O-rings, can be reduced or avoided, in particular by absorbing lateral forces acting on the sealing element.
In an embodiment, the regulating body is produced by two-component plastic in jection molding, the regulating body comprises a base body made of a firm first component and the sealing element is made of an elastic second component.
Specifically, the first component may exhibit a hardness which is higher than the hardness of the second component. Producing the regulating body by plastic injec tion-molding provides the advantage of fast manufacturing with reduced costs compared to manufacturing valve regulating bodies using for example metal. By using two-component plastic injection molding, the regulating body and the seal ing element can be produced in the same manufacturing process where the sealing element can be anchored in the regulating body in a form-fit manner. In particular, fitting of the sealing element into the regulating body is integrated into the manu facturing process, which increases durability and reduces the probability of the sealing element being loosened or being released.
In an embodiment, the regulating body comprises a plastic base body formed in one piece. Forming the plastic base body in one piece provides the advantage of a simple man ufacturing and reduction or elimination of backlash. Furthermore, a one-piece base body allows to reduce the number of interfaces which increases the precision of regulation when operating the 6-way valve. Alternatively, the regulating body comprises a plastic base body formed by two pieces which are plugged onto each other.
By using two pieces forming the plastic base body, small form deviations can be compensated.
In embodiments with two pieces of the plastic base body, each piece may comprise a single continuous sealing element.
In an embodiment, the regulating body comprises an integrated temperature sen sor.
The integrated temperature sensor can be used to measure the supply temperature and the return temperature of the temperature regulating fluid in the two fluidic circuits. In a variant, the integrated temperature sensor is overmolded and at least partially arranged within the regulating body. The regulating body may comprise a feed-through for data connection between the temperature sensor and a pro cessing unit arranged in an HVAC actuator mounted onto the 6-way valve. In an embodiment, the temperature sensor is arranged between the first channel and the second channel and comprises a first probe, reaching into the first channel, and a second probe, reaching into the second channel.
In an embodiment, at least one of: the two source supply ports, the two source return ports, the consumer supply port and the consumer return port, comprises a manual flow adjuster, preferably in the form of a screw element, reaching into the port.
In a variant, the manual flow adjuster is in the form of a disk reaching into the port.
Using the manual flow adjuster, the flow rate in the fluidic circuits may be reduced. In an embodiment, at least one of: the two source supply ports, the two source return ports, the consumer supply port and the consumer return port, comprises a self-adjusting flow restrictor, configured to regulate the fluid flow over a range of pressure differences across the flow restrictor.
In an embodiment, the self-adjusting flow restrictor comprises a spatially fixed pin and an elastically deformable annular throttling member encompassing at least a part of the pin, wherein the annular throttling member defines an orifice in the self- adjusting flow restrictor for the passage of the fluid flow. The orifice may be modi fiable by deformation of the annular throttling member under a pressure difference across the self-adjusting flow restrictor. A part of the orifice may be defined between the annular throttling member and the pin. Another part of the orifice may be defined between the annular throttling member and another part of the self-adjusting flow restrictor. The pin may com prise a retaining surface, for example formed by bridges, for holding the annular throttling member within the self-adjusting flow restrictor. The fluid flow may pass between the bridges. In an embodiment, the pin is tapered.
The self-adjusting flow restrictor provides the advantage that the flow rate may be regulated to a specific value determined by the dimensions of the orifice and char acteristics of the annular throttling member, such as for example material or di- mensioning. For example, an increasing pressure difference across the self-adjust ing flow restrictor leads to deformation of the annular throttling member reducing the size of the orifice which limits the flow rate. Advantageously, the annular throt tling member abuts against a portion of the self-adjusting flow restrictor, for ex ample the pin and/or a seat formed within the self-adjusting flow restrictor, while being deformed, which increases the range of pressure differences the self-adjust ing flow restrictor can withstand while regulating the flow without having to in crease the thickness of the annular throttling member
By arranging a self-adjusting flow restrictor at the consumer supply port or the con sumer return port, the flow rates for both fluidic circuits may be regulated to a com- mon specific value. In an embodiment, the 6-way valve comprises two self-adjusting flow restrictors, each assigned to one of the fluidic circuits and each arranged at one of the two source supply ports or at one of the two source return ports.
With the two self-adjusting flow restrictors, separate regulating of the fluid flow for each fluidic circuit can be achieved. In particular, the two self-adjusting flow restric tors can be configured differently from each other to regulate the flow rate for the two fluidic circuits, for example for a hot water and a cold water circuit, to different specific values. Thus, the two self-adjusting flow restrictors may comprise different dimensions of the orifice and different characteristics of the annular throttling member, such as for example material or dimensioning.
In an embodiment, the self-adjusting flow restrictor comprises at least two spatially fixed pins and at least two elastically deformable annular throttling members, each encompassing at least a part of one of the pins. By varying the number of pins and annular throttling members, the number of orifices can be changed, such that the overall flow rate can be modified and adapted to the specific requirement of the control valve.
In an embodiment, the self-adjusting flow restrictor comprises a carrier plate ex tending across the cross-section of the valve housing at the position of the self- adjusting flow restrictor and comprising a recess for receiving the pin and the an- nular throttling member, wherein the annular throttling member defines the orifice between the pin and a portion of the carrier plate. The carrier plate may comprise multiple recesses for receiving pins and annular throttling members. Multiple pins and annular throttling members being received in recesses of a single carrier plate provides the advantage of increased simplicity and robustness of the structure. The recess may be designed in a manner that the pin may be received in a form-fit and /or force-fit manner in the recess. The pin may comprise bridges formed at one end of the pin, the bridges connected at one end to a common fitting ring. The fitting ring may enable the pin to be received in the recess in a form-fit and/or force-fit manner. Especially, the pin may be held in the carrier member regardless to the direction of the fluid flow. In an embodiment, the regulating body is rotatable into a blocking configuration and configured to establish in said blocking configuration a pressure relief connec tion between at least one of the consumer supply port and the consumer return port and one of: the two source supply ports and the two source return ports, while fluidically disconnecting the respectively remaining others of the two source supply ports and the two source return ports, such that fluidic connection between at least one of the consumer supply port and the consumer return port and one of the two source supply ports and the two source return ports is established only by the pres sure relief connection.
The pressure relief connection may be established by the single continuous sealing element, especially by a curved part of the sealing element crossing a source supply port or source return port, respectively, in the blocking configuration, as described above. Alternatively, the pressure relief connection may be established by a separate Ci- ring or a separate sealing element arranged at the respective source supply or re turn port and crossing the respective source supply or return port in the blocking configuration. According to a further aspect, the present invention is also directed to a method of producing a 6-way valve according to the present invention, wherein the regulating body is provided with a single continuous sealing element configured to selectively fluidically disconnect one of the two source supply ports from the consumer supply port and simultaneously one of the two source return ports from the consumer re- turn port, depending on the rotation angle. According to the method of producing the 6-way valve, the regulating body and sealing element are produced by two- component plastic injection molding, wherein the regulating body is injection- molded with a firm first component and, subsequently, the sealing element is in jection-molded with an elastic second component. BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will be explained in more detail, by way of example, with reference to the drawings, in which:
Figure 1 : shows a perspective view of an embodiment of a 6-way valve with disassembled housing and regulating body; Figure 2a-c: show cross sections of the 6-way valve of Figure 1 with three differ ent configurations of the regulating body; Figure 3: shows a perspective view of an embodiment of a regulating body with a base body formed in one piece;
Figure 4: shows close-ups of the regulating body of Figure 3;
Figure 5: shows a side view of the 6-way valve of Figure 1 with assembled housing and regulating body, the regulating body being in a blocking configuration;
Figure 6a-c show cross sectioncross sections of the 6-way valve along the line A- A in Figures 2a-c;
Figure 6d: shows a magnification of Figure 6c; Figure 7: shows the 6-way valve of Figure 1 with assembled housing and reg ulating body and a mounted actuator;
Figure 8: shows a perspective view of a further embodiment of a regulating body with a base body formed by two pieces before being plugged onto each other; Figure 9: shows a cross section of the 6-way valve of Figure 7 with two tem perature sensors;
Figure 1 0a-c: show cross sections of the first source supply port as shown in Figure
1 with an assembled manual flow adjuster; Figure 1 1 a-b: show cross sections of an embodiment of a self-adjusting flow re strictor;
Figure 1 2 : shows a perspective cross-sectional view of a further embodiment of a self-adjusting flow restrictor arranged at a port; Figure 1 3a: shows a cross-sectional side view of a further embodiment of a self- adjusting flow restrictor arranged in a source return port;
Figure 1 3b: shows an exploded perspective view of the self-adjusting flow restric tor and the source return port of Figure 1 3a;
Figure 1 4a: shows a perspective view of a further embodiment of a regulating body;
Figure 1 4b: shows a side view of the regulating body of Figure 1 4a.
DETAILED DESCRIPTION OF EXEM PLARY EM BODIM ENTS
Figure 1 shows a perspective view of an embodiment of a 6-way valve 1 00 with disassembled housing 1 and regulating body 2. The regulating body 2 is shown before being inserted into the housing 1 . After inserting the regulating body 2, the housing 1 may be closed by a cap 1 4. The housing 1 comprises the following six ports: first and second source supply ports 1 1 A, 1 2A; first and second source re turn ports 1 1 B, 1 2B; consumer supply port 1 3A and consumer return port 1 3 B. The first source supply port 1 1 A is configured to connect a source of a first fluidic circuit, which may be the cooling circuit, to the 6-way valve, whereas the second source supply port 1 2A connects a source of a second fluidic circuit, which may be the heating circuit, to the 6-way valve. Accordingly, the first source return port 1 1 B is assigned to the first fluidic circuit and the second source return port 1 2 B is as- signed to the second fluidic circuit. The consumer supply port 1 3A and consumer return port 1 3B can be connected to a combined heating and cooling element (not shown in the Figure). The first and second source supply ports 1 1 A, 1 2A comprise bores 1 1 2, 1 22 for receiving manual flow adjusters 1 1 1 , 1 2 1 . The regulating body 2 comprises a cylindrical envelope surface, despite featuring a plurality of recesses and bores. A single continuous sealing element 3 is substantially arranged on the cylindrical envelope surface of the regulating body 2.
Figure 2a-c show cross sections of the 6-way valve 1 00 of Figure 1 with three dif ferent configurations of the regulating body 2. In the assembled state of the 6-way valve 1 00, the source supply ports 1 1 A, 1 2A, the source return ports 1 1 B, 1 2B, the consumer supply port 1 3A, the consumer return port 1 3 B and the longitudinal axis L of the regulating body 2 define a common plane, providing a planar design of the 6-way valve 1 00. The regulating body 2 is received in the housing 1 and rotatable around its longitudinal axis L. The housing 1 is closed by the cap 1 4. The regulating body 2 comprises a first channel 2 1 and a second channel 22 extending through the regulating body 2. The first channel 2 1 is assigned to the consumer supply port 1 3A and configured to selectively establish a connection between the first source supply port 1 1 A or the second source supply port 1 2A and the con sumer supply port 1 3A. The second channel 22 is assigned to the consumer return port 1 3B and configured to selectively establish a connection between the first source return port 1 1 B or the second source return port 1 2B and the consumer return port 1 3B. The regulating body 2 further comprises a pin 23 for connecting the regulating body 2 to an actuator. The pin 23 is received in a lead-through 1 5 of the housing 1 , which is sealed by the sealing element 3. Figure 2a shows a first configuration of the regulating body 2 where the first fluidic circuit C is established by connecting the first source supply port 1 1 A with the con sumer supply port 1 3A and the consumer return port 1 3B with the first source re turn port 1 1 B. The first fluidic circuit C is thus running from the first source supply port 1 1 A through the first channel 21 to the consumer supply port 1 3A, through the consumer, which may be a coil (as symbolized by the wavy line of the first fluidic circuit C), back to the consumer return port 1 3B, through the second channel 22 and to the second first return port 1 1 B. The sealing element 3 fluidically disconnects the second source supply port 1 2A from the consumer supply port 1 3A and the second source return port 1 2B from the consumer return port 1 3 B. Furthermore, the sealing element 3 fludically disconnects the first channel 21 and the second channel 22 from each other.
Figure 2b shows a second configuration where the second fluidic circuit FI is estab lished by connecting the second source supply port 1 2A with the consumer supply port 1 3A and the consumer return port 1 3B with the second source return port 1 2B. The regulating body 2 has been rotated by 1 80° around the axis L with respect to the first configuration as shown in Figure 2a. The second fluidic circuit H is run ning from the second source supply port 1 2A through the first channel 21 to the consumer supply port 1 3A, through the consumer, back to the consumer return port 1 3B, through the second channel 22 and to the second source return port 1 2B. The sealing element 3 now fluidically disconnects the first source supply port 1 1 A from the consumer supply port 1 3A and the first source return port 1 1 B from the consumer return port 1 3 B. Figure 2c shows the regulating body 2 in a blocking configuration where the first and second source supply ports 1 1 A, 1 2A and the first source return port 1 1 B are fluidically disconnected from the consumer supply and consumer return ports 1 3A, 1 3 B owing to the sealing element 3. The blocking configuration is achieved by a ±90° rotation of the regulating body 2 with respect to the configurations shown in Figures 2a, b. A pressure relief connection is established between the second source return port 1 2B and the second channel 22 by the sealing element 3 cross ing the second source return port 1 2B (see also Figure 5). The sealing element 3 does not fluidically disconnect the consumer supply port 1 3A and the consumer return port 1 3 B such that fluidic connection between the first channel 21 and the consumer supply port 1 3A and fluidic connection between the second channel 22 and the consumer return port 1 3 B are maintained. The pressure relief connection therefore establishes fluidic connection between the consumer return port 1 3 B and the second source return port 1 2B such that an overpressure in the consumer can be relieved by the pressure relief connection. As can be seen in Figures 2a-c, the consumer supply port 1 3A and the consumer return port 1 3 B are each fluidically connected to the assigned first channel 2 1 or second channel 22, respectively, independent from the configuration of the regu lation body 2. Figure 3 shows a perspective view of an embodiment of a regulating body 2 with a plastic base body 24 formed in one piece. First and second channels 21 , 22 are formed as bores extending through the base body 24. The sealing element 3 is de signed as a continuous sealing strap which is at least partially form-fitted in an un- dercut formed in the surface of the plastic base body 24, and comprises four sec tions 3 1 shaped as elongated O-rings extending partially along a perimeter of the cylindrical envelope surface of the regulating body 2 and arranged in vicinity of the two source supply ports and the two source return ports. In particular, the sections 31 shaped as elongated O-rings extend along more than half of the perimeter of the cylindrical envelope surface. The sealing element 3 comprises linear sections 32 arranged on the base body 24 and connecting the sections 3 1 shaped as elongated O-rings. In comparison with Figures 2a-c, it can be recognized that the sections 3 1 shaped as elongated O-rings are arranged to fluidically disconnect the source sup ply ports 1 1 A, 1 2A and the source return ports 1 1 B, 1 2B, respectively, depending on the rotation angle of the regulating body 2. Especially, it can be recognized that the sections 3 1 shaped as elongated O-rings run around the respective source sup ply ports 1 1 A, 1 2A or return ports 1 1 B, 1 2B to be fluidically disconnected. The sealing element 3 comprises additional sections 33, 34 for sealing the lead-through of the housing of the 6-way valve, the lead-through receiving the pin 23 of the regulating body 2, and for fluidically disconnect the first and second channel 2 1 , 22 from each other. The additional sections 33, 34 have an increased thickness compared to the linear sections 32 connecting the sections 3 1 shaped as elongated O-rings. The regulating body 2 is produced by two-component plastic injection molding. The base body 24 is made of a firm first component and the sealing element 3 is made of an elastic second component.
Figure 4 shows close-ups of the regulating body 2 of Figure 3. The sealing element 3 has an increased thickness in the sections 3 1 shaped as elongated O-rings com pared to the thickness in the linear sections 32. The linear sections 32 therefore do not contribute to sealing contact between the sealing element 3 and an inner sur face of the housing of the 6-way valve. The regulating body 2 comprises protruding support ribs 25 arranged next to the sections 3 1 shaped as elongated O-rings. The height of the support ribs 25 is smaller than the height of the sections 3 1 shaped as elongated O-rings.
Figure 5 shows a side view of the 6-way valve 1 00 of Figure 1 with assembled housing 1 and regulating body 2, the regulating body 2 being in a blocking config uration as shown for example in Figure 2c. The first and second source supply ports 1 1 A, 1 2A and the first source return port 1 1 B are fluidically disconnected from the first and second channels within the regulating body 2. At the second source return port 1 2B, the sealing element 3 comprises a curved part 35 of a section shaped as elongated O-ring, the curved part 35 being offset with respect to respective curved parts of the remaining sections shaped as elongated O-rings, such that the curved part 35 crosses the second source return port 1 2B and thus a pressure relief con- nection 4 is formed. Figure 6a-c show cross sections of the 6-way valve along the line A-A in Figures 2a-c. Figure 6a shows the regulating body in a configuration where the second source return port 1 2B is blocked whereas in Figure 6b, the second source return port 1 2B is open. Figure 6c shows the regulating body 2 in the blocking configura- tion, where a pressure relief connection 4 is established between the second source return port 1 2B and the second channel 22. Figure 6d shows a magnification of Figure 6c indicating the curved part 35 of the sealing element crossing the second source return port 1 2B, such that fluidic connection symbolized by the arrow F is established by the pressure relief connection 4. Figure 7 shows the 6-way valve 1 00 of Figure 1 with assembled housing 1 and regulating body and a mounted actuator 200. The actuator 200 has an elongated shape and is oriented in a manner that the elongation of the actuator 200 is ori ented in the same common plane defined by the source supply and return ports, consumer supply and return ports and the longitudinal axis of the regulating body of the 6-way valve 1 00. Therefore, a space saving arrangement is achievable also in combination with the actuator 200.
Figure 8 shows a perspective view of a further embodiment of a regulating body 2' with a base body 24' formed by a first piece 241 ' and a second piece 242' before being plugged onto each other. The first piece 241 ' and the second piece 242' can be plugged onto each other in a form-fit manner by a pin 2421 ' formed at an end of the second piece 242' and a recess 241 1 ' formed at an end of the first piece 241 '. Due to the separation of the base body 24' into two pieces 241 ', 242', the regulating body 2' comprises two single continuous sealing elements 3A', 3B\ each with two sections 3 1 ' shaped as elongated O-rings.
Figure 9 shows a cross section of the 6-way valve 1 00 of Figure 7 with two inte grated temperature sensors 51 , 52 for measuring the supply temperature and the return temperature of the temperature regulating fluid in the two fluidic circuits. The regulating body 2 comprises feed-throughs for cablings for data connection between the temperature sensors 5 1 , 52 and a processing unit 6 arranged in the actuator 200 mounted onto the 6-way valve 1 00.
Figure 1 0a-c show cross sections of a part of the first source supply port 1 1 A as shown in Figure 1 with an assembled manual flow adjuster 1 1 1 in different config urations, as viewed in the direction of the arrow V in Figure 1 . The manual flow adjuster 7 is designed in the form of screw elements reaching into the ports and is received in a bore 1 1 2.
Figure 1 1 a-b show cross-sections of an embodiment of a self-adjusting flow re- strictor 7 for different pressures P 1 and P2 of the fluid flow. The self-adjusting flow restrictor 7 comprises a carrier plate 74, a tapered pin 71 and an annular throttling member 72, the annular throttling member 72 encompassing the pin 71 . The an nular throttling member 72 is an elastically deformable O-ring. The pin 71 and an nular throttling member 72 are received in a recesses 741 of the carrier plate 74. The annular throttling member 72 defines an orifice 73 between the pin 7 1 and a portion 743 of the carrier plate 74 adjacent to the annular throttling member 72. The carrier plate 74 comprises laterally arranged recesses 742 which form a seat for the annular throttling member 72.
Figure 1 1 a shows the configuration for the pin 71 and the annular throttling mem ber 72 received in the recess 741 of the carrier plate 74 at a pressure P1 of the fluid flow. The pin 71 comprises at one end bridges 7 1 1 which form a retaining surface, such that the annular throttling member 72 may be kept within the carrier plate 74 even if the fluid flow changes the direction of the flow path. The bridges 71 1 are connected at an end to a fitting ring 71 2. The fitting ring 71 2 is received in the recess 741 in a form-fit and force-fit manner. The fluid may flow across the self- adjusting fluid restrictor 7 through the space between the bridges 71 1 . A part of the orifice 73 is defined between the annular throttling member 72 and the pin 71 and another part of the orifice 73 is defined between the annular throttling mem ber 72 and a portion 743 of the carrier plate 74.
Figure 1 1 b shows the configuration at a pressure P2> P1 . The annular throttling member 72 is deformed due to the increased pressure drop across the fluid regu lating insert and pressed against the orifice 73 and against the portion 743 of the carrier plate 74 forming a bearing surface for the annular throttling member 72. Due to the deformation of the throttling member 72, the size of the orifice 73 through which the fluid may flow, is decreased, yielding a regulation of the flow rate. Part of the annular throttling member 72 is pressed into the laterally arranged recesses 742 forming a seat for the annular throttling member 72. Figure 1 2 shows a perspective cross-sectional view of a further embodiment of a self-adjusting flow restrictor 7' arranged at a port 1 6'. The port 1 6' may be at least one of: one of the first or second source supply port or consumer supply port. The self-adjusting flow restrictor 7' comprises a carrier plate 74' fixedly held between a first port member 1 61 ' and a second port member 1 62' screwed onto the first port member 1 61 '. The carrier plate 74' is clamped in a form-fit manner and force-fit manner between the first and second port member 1 61 ', 1 62'. The fluid flow is restricted to flow through the orifice 73'. In Figure 1 2, two pins 71 ' can be seen which are arranged in parallel with respect to the flow path P. Annular throttling members 72' encompass each a protruding part of the pin 71 ' and each define an orifice 73' between the pin 71 ' and a portion of the carrier plate 74'. The pins 71 ' comprise recesses 71 3' contributing to the orifice 73'. At least a part of the annular throttling members 72' may be compressed into the recesses 71 3' of the respective pin 71 ' under a pressure difference across the flow regulating insert 74', which modifies the orifice for the passage of the fluid flow.
Figure 1 3a shows a cross-sectional side view of a further embodiment of a self- adjusting flow restrictor 7" arranged in a source return port 1 1 B". The flow direc tion is indicated by the arrow F". The self-adjusting flow restrictor 7" comprises a carrier plate in the shape of a cartridge 74'' extending over the cross-section of the source return port 1 1 B". The cartridge 74" comprises a recess 741 " receiving a pin 71 " and an annular throttling member 72". The annular throttling member 72" encompasses the pin 71 ". The cartridge 74" comprises lateral latches 744" con figured to catch the pin 71 " in a latching fashion. The self-adjusting flow restrictor 7" is held in place by a fitting clip 75", as better visible in Figure 1 3b. Figure 1 3b shows an exploded perspective view of the self-adjusting flow restrictor 7" and the source return port 1 1 B" of Figure 1 3a. The fitting clip 75" comprises two ends with holes 75 1 " which can be used to catch and remove or insert the clip 75". Thus the shown embodiment is particularly suitable for interchanging differ- ent self-adjusting flow restrictors 7" with different flow regulating characteristics, depending on the specific application.
Figure 1 4a shows a perspective view of a further embodiment of a regulating body 2" with a plastic base body 24" formed in one piece. First and second channels 2 1 ", 22" are formed as bores extending through the base body 24". The regulating body 2 comprises four elongated O-rings 3 1 .1 "-3 1 .4" extending partially along a perimeter of the cylindrical envelope surface of the regulating body 2" and ar ranged in vicinity of the two source supply ports and the two source return ports. In particular, the elongated O-rings 3 1 .1 "-3 1 .4" extend along more than half of the perimeter of the cylindrical envelope surface. The O-rings 3 1 .1 "-3 1 .4" are each at least partially form-fitted in an undercut formed in the surface of the plastic base body 24". The elongated O-rings 3 1 .1 "-3 1 .4" are arranged to fluidically discon nect the source supply ports and the source return ports from the first and second channels 21 ", 22", respectively, depending on the rotation angle of the regulating body 2". Especially, it can be recognized that the elongated O-rings 3 1 .1 "-3 1 .4" run around the respective source supply ports or return ports to be fluidically dis connected from the first and second channels 2 1 ", 22", respectively. The regulat ing body 2" comprises additional O-rings 33", 34" for sealing a lead-through of the housing of the 6-way valve, the lead-through receiving the pin 23" of the reg ulating body 2”, and for fluidically disconnect the first and second channel 2 1 ", 22" from each other.
Figure 1 4b shows a side view of the regulating body 2" of Figure 1 4a with elon- gated O-rings 3 1 .1 "-3 1 .4". It can be recognized that the O-ring 3 1 . 1” comprises a curved part 35.1 " which is offset in the circumferential direction of the cylindrical envelope surface of the regulating body 2". In particular, the elongated O-ring 3 1 . 1 " is offset such that a spacing is formed between the curved part 35.1 " and an edge 26” of the regulating body 2". Due to the curved part 35. 1 " being offset as shown in the Figure, the curved part 35. 1 " crosses a respective source supply or return port in a blocking configuration of the regulating body 2", such that a pres sure relief connection between at least one of the consumer supply port and the consumer return port and at least one of: the two source supply ports and the two source return ports is established, in analogy to what is shown for example in Figure 5 and Figures 6a-d. In comparison, it can be recognized that the remaining elon gated O-rings 3 1 .2"-3 1 .4" do not exhibit parts being offset in circumferential di rection. As representatively indicated in the Figure, the curved part 35.2" of the elongated O-ring 3 1 .2" abuts an edge of the regulating body 2" and is not offset in circumferential direction. In the blocking configuration, the regulating body 2" as shown in the Figure establishes a pressure relief connection through the respec tive port assigned to the elongated O-ring 3 1 .1 " while the remaining ports as signed to the elongated O-rings 31 2"-3 1 .4" remain fluidically disconnected from the consumer ports. 30
100 6-way valve
11A first source supply port
11 B, 11 B" first source return port
12A second source supply port
12B second source return port
13A consumer supply port
13B consumer return port
15 lead-through
161' first port member
162' second port member
111, 121 manual flow adjusters
112, 122 bores
2, 2', 2" regulating body
21.21" first channel
22, 22" second channel
23, 23" pin
24, 24', 24" base body
241' first piece
242' second piece
2411' recess
2421' pin
25 support ribs
3, 3A\ 3B' sealing element
31,31' section shaped as elongated O-ring
31.1 "-31.4" elongated O-rings
32 linear section
33, 34 additional sections
33", 34" additional O-rings
35, 35.1", 35.2" curved part
4 pressure relief connection
51, 52 temperature sensors
7, 7', 7" self-adjusting flow restrictor
71,71', 71" pin
711 bridges
712 fitting ring
713' recesses
72, 72', 72" annular throttling member
73, 73' orifice
74, 74' carrier plate 74" cartridge
741 , 741 " recess
742 recess
743 portion
744" latch
75" fitting clip
C first fluidic circuit
H second fluidic circuit
L longitudinal axis F, F", V arrows
P flow path
A-A cut line
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