Mixing valve

Abstract

A mixing valve (1) is provided with: a housing (2) in which a valve chamber (6) is formed; and a rotor (4) rotatably inserted in the valve chamber (6), the housing (2) having, on a first peripheral wall (12) thereof: a first inlet port (14) which opens to the valve chamber (6) at a first opening (20) and into which a first fluid (F1) flows; and a second inlet port (16) which opens to the valve chamber (6) at a second opening (22) and into which a second fluid (F2) flows, the rotor (4) having a first inflow pipe (30) and a second inflow pipe (32) on a second peripheral wall (28) thereof, and the housing (2) having an outlet port (18) on a first peripheral wall (12) and an outlet port (26) communicating with the mixing flow path (24), the discharge port (18) discharges the first fluid (F1) and / or the second fluid (F2), which respectively flow into the valve chamber (6) without passing through the first inflow pipe (30) and / or the second inflow pipe (32) of the rotor (4), as a discharge fluid (DF) to the outside of the housing (2).

Description

Technical Field

[0001] The present invention relates to a mixing valve, and more particularly to a mixing valve capable of mixing different fluids at a predetermined flow rate ratio to obtain a desired mixed fluid. Background Art

[0002] Patent document 1 discloses a flow control valve capable of adjusting the ratio of cold water and hot water to obtain warm water of a desired temperature. The flow control valve is used in a hot water supply device, etc., and comprises a valve body having a cylindrical valve chamber and a valve core rotatably inserted in the valve chamber. The valve body has two side ports for cold water and hot water to flow in, respectively. Each side port opens to the valve chamber, and the opening area of ​​each side port changes with the rotation of the valve core, thereby adjusting the ratio of cold water and hot water to be mixed. Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Publication No. 2010-1925 Summary of the invention Technical problem to be solved by the invention

[0004] If the opening area of ​​each side port, in other words, each inlet port, decreases with the rotation of the valve core, the flow of the fluid on the upstream side of each inlet port stagnates. For example, it is assumed that there is a heat exchanger for adjusting the temperature of the fluid on the upstream side of the flow control valve, in other words, the mixing valve. In this case, the flow path is narrowed in the mixing valve, so that the flow of the fluid on the upstream side of the mixing valve stagnates, and the heat exchange efficiency of the fluid in the heat exchanger may be reduced. Therefore, a mixing valve is required that can minimize the impact on the equipment arranged on the upstream side by not hindering the flow of the upstream side fluid.

[0005] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a mixing valve capable of minimizing the influence on equipment disposed on the upstream side by not hindering the flow of the upstream side fluid. Technical solutions adopted to solve technical problems

[0006] In order to achieve the above-mentioned object, the mixing valve of the present invention comprises: a cylindrical housing, wherein a valve chamber is formed inside the housing; and a rotor, wherein the rotor is rotatably inserted into the valve chamber, wherein the housing has: a first inlet port on a first peripheral wall of the housing, wherein the first inlet port is opened in the valve chamber with a first opening and allows a first fluid to flow in; and a second inlet port, wherein the second inlet port is opened in the valve chamber with a second opening and allows a second fluid to flow in, wherein the rotor has: a first inlet pipe communicating with the first opening; and a second inlet pipe communicating with the second opening on a second peripheral wall of the rotor, wherein a mixing flow path is opened at one axial end of the rotor, wherein the mixing flow path is communicated with the first inlet pipe and the second inlet pipe, and wherein the first fluid flowing into the first inlet pipe and / or the second fluid flowing into the second fluid pipe flows into the mixing flow path as a mixed fluid, wherein the housing has a discharge port on the first peripheral wall, and has an outlet port communicating with the mixing flow path, wherein the discharge port discharges the first fluid and / or the second fluid that flow into the valve chamber respectively without passing through the first inlet pipe and / or the second inlet pipe of the rotor as a discharge fluid to the outside of the housing.

[0007] Preferably, a first non-communication area is formed at the first opening of the housing in response to the rotation of the rotor, and the first non-communication area is not communicated with the first inflow pipe but is communicated with the valve chamber. Preferably, a second non-communication area is formed at the second opening of the housing in response to the rotation of the rotor, and the second non-communication area is not communicated with the second inflow pipe but is communicated with the valve chamber. Preferably, the first inlet port, the second inlet port, and the discharge port are provided on the same radial surface of the housing so as to protrude from the first peripheral wall in the radial direction of the housing.

[0008] Preferably, when the intersection angle between a first line connecting the rotation center of the rotor and the radial center of the first opening and a second line connecting the rotation center and the radial center of the second opening on the same radial plane is defined as the fluid inflow angle, and the intersection angle between a third line connecting the rotation center and the radial center of the opening of the first inflow pipe and a fourth line connecting the rotation center and the radial center of the opening of the second inflow pipe on the same radial plane is defined as the fluid mixing angle, the fluid mixing angle is different from the fluid inflow angle. Preferably, the fluid mixing angle is smaller than the fluid inflow angle. Effects of the Invention

[0009] According to the present invention, it is possible to provide a mixing valve that can minimize the influence on equipment disposed on the upstream side by not hindering the flow of the upstream fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a perspective view of a mixing valve according to one embodiment of the present invention. Figure 2 yes Figure 1 A longitudinal section view of a mixing valve. Figure 3 is from Figure 2 A perspective view of the rotor viewed from direction A. Figure 4 yes Figure 1 Cross-sectional view of the mixing valve in the BB direction. Figure 5 yes Figure 4 A longitudinal cross-sectional view of the rotor in the CC direction. Figure 6 It is a cross-sectional view of the mixing valve when the first communication region is the entire region of the first opening. Figure 7 yes Figure 6 A longitudinal sectional view of the rotor in the case of . Figure 8 It is a cross-sectional view of the mixing valve when the second communication region is the entire region of the second opening. Fig. 9 yes Figure 8 A longitudinal sectional view of the rotor in the case of . Fig.10 This is a graph showing the flow rate ratio of the first fluid and the second fluid in the mixed fluid according to the rotational position of the rotor. Fig.11 It is a graph showing the flow rate ratio of the first fluid and the second fluid in the discharged fluid according to the rotational position of the rotor. Fig.12 This is a structural diagram of a temperature control system provided with a mixing valve. Fig.13 It is a cross-sectional view of a mixing valve according to a modified example. DETAILED DESCRIPTION

[0011] Figure 1 A perspective view showing a mixing valve 1 according to an embodiment of the present invention is shown. Figure 2 Show Figure 1 1 is a longitudinal sectional view of a mixing valve 1. The mixing valve 1 comprises: a cylindrical housing 2 as a valve body (valve body); and a rotor 4 as a valve core. A valve chamber 6 is formed inside the housing 2, and the rotor 4 is rotatably inserted into the valve chamber 6. In detail, the rotor 4 has an upper drive shaft 4a and a lower mixing tube 4b. The drive shaft 4a is driven to rotate by an actuator such as a stepping motor not shown in the figure. The mixing tube 4b forms a mixing flow path 24 described later.

[0012] The housing 2 is formed, for example, by welding an upper cover member 2a and a lower cylindrical member 2b. The drive shaft 4a and the mixing tube 4b of the rotor 4 are rotatably supported on the inner peripheral surfaces of the cover member 2a and the cylindrical member 2b of the housing 2 via a shaft sealing device 10. The shaft sealing device 10 is composed of a sealing member such as an O-ring and a bearing member such as a bearing, and the valve chamber 6 is sealed and divided in the housing 2 by each shaft sealing device 10.

[0013] The first peripheral wall 12 formed on the cylindrical member 2b is provided with a first inlet port 14, a second inlet port 16, and a discharge port 18. In the present embodiment, the first inlet port 14, the discharge port 18, and the second inlet port 16 are provided in the first peripheral wall 12 in this order. Figure 1 The outlet ports 26 are provided at substantially 90 degrees counterclockwise in the circumferential direction when viewed in the middle, and are all provided to protrude from the first circumferential wall 12 toward the radial direction X of the housing 2. In addition, the outlet ports 26 are provided to protrude along the axial direction Y of the rotor 4 toward the axial direction Y of the housing 2 (in the same direction as the axial direction Y of the rotor 4).

[0014] Specifically, the first inlet port 14, the second inlet port 16, and the discharge port 18 are provided on the same radial direction X surface of the housing 2, protruding from the first peripheral wall 12 toward the radial direction X of the housing 2. The first inlet port 14 is opened to the valve chamber 6 with a first opening 20, and the first fluid F1 flows in. The second inlet port 16 is opened to the valve chamber 6 with a second opening 22, and the second fluid F2 flows in.

[0015] The mixing tube 4b of the rotor 4 is formed with a mixing flow path 24 through which the first fluid F1 and / or the second fluid F2 flows as a mixed fluid MF, and the mixing flow path 24 is open at the lower end of the mixing tube 4b, in other words, at one end (lower end) in the axial direction Y of the rotor 4. In addition, the lower end of the cylindrical member 2b of the housing 2 is reduced in diameter, and an outlet port 26 connected to the mixing tube 4b is formed on the first peripheral wall 12 of the reduced diameter portion so as to open downward. The lower end of the mixing tube 4b is positioned at the outlet port 26.

[0016] In addition, the mixing flow path 24 opened at one end of the rotor 4 in the axial direction Y communicates with the outlet port 26 of the housing 2. In addition, in the present embodiment, the outlet port 26 is provided to protrude toward the axial direction Y of the housing 2 along the axial direction Y of the rotor 4. In addition, the first inlet pipe 30 and the second inlet pipe 32 are provided on the second peripheral wall 28 of the mixing pipe 4b formed in the rotor 4.

[0017] Figure 3 Shown from Figure 2 The rotor 4 is a three-dimensional view of the rotor 4 viewed from the direction A. In the rotor 4, the first inlet pipe 30 and the second inlet pipe 32 are located at the mixing pipe 4b. Figure 3When viewed in the middle, the first inlet pipe 30 and the second inlet pipe 32 are protruded from the second peripheral wall 28 to the radial direction X of the mixing tube 4b (the same direction as the radial direction X of the housing 2) at positions where there is an obtuse angle of less than 180 degrees in the counterclockwise circumferential direction. In detail, the first inlet pipe 30 and the second inlet pipe 32 are protruded from the second peripheral wall 28 to the radial direction X of the mixing tube 4b on the same radial direction X surface of the mixing tube 4b. In addition, the open end 30a of the first inlet pipe 30 and the open end 32a of the second inlet pipe 32 are connected by a circular arc plate-shaped connecting portion 34, and a cavity 36 is formed between the connecting portion 34 and the second peripheral wall 28.

[0018] Figure 4 Show Figure 1 The first inlet pipe 30 is connected to the mixing flow path 24, and the first communication area 38 of the first inlet pipe 30 connected to the first opening 20 changes with the rotation of the rotor 4. In addition, the second inlet pipe 32 is connected to the mixing flow path 24, and the second communication area 40 of the second inlet pipe 32 connected to the second opening 22 changes with the rotation of the rotor 4.

[0019] Here, in the case of the present embodiment, a first non-communication region 42 may be formed at the first opening 20 in accordance with the rotation of the rotor 4. The first non-communication region 42 is an opening region in the first opening 20 that communicates with the valve chamber 6, and is not communicated with the first inflow pipe 30. On the other hand, a second non-communication region 44 may be formed at the second opening 22 in accordance with the rotation of the rotor 4. The second non-communication region 44 is an opening region in the second opening 22 that communicates with the valve chamber 6, and is not communicated with the second inflow pipe 32.

[0020] The first fluid F1 and / or the second fluid F2 that respectively flow into the valve chamber 6 through the first non-connected area 42 and / or the second non-connected area 44 are discharged to the outside of the housing 2 as the exhaust fluid DF through the exhaust port 18. That is, the first fluid F1 that flows in from the first opening 20 and does not pass through the first inflow pipe 30 flows into the valve chamber 6, and the second fluid F2 that flows in from the second opening 22 and does not pass through the second inflow pipe 32 flows into the valve chamber 6, the first fluid F1 and the second fluid F2 are mixed in the valve chamber 6, and are discharged to the outside of the housing 2 as the exhaust fluid DF through the exhaust port 18.

[0021] The exhaust fluid DF is appropriately used in the temperature control system 48 described later. Figure 4 As shown, sealing components 46 are respectively installed on the inner circumferential surfaces near the first opening 20 and the second opening 22 of the cylindrical component 2b of the housing 2, and the first inlet pipe 30 and the second inlet pipe 32 slide smoothly with the sealing component 46 as the rotor 4 rotates, and the sealing component 46 tightly seals the valve chamber 6.

[0022] Figure 5Show Figure 4 The first fluid F1 flowing through the first communication area 38 communicating with the first inflow pipe 30 in the first opening 20 flows into the mixing flow path 24 formed in the mixing pipe 4b of the rotor 4 through the first inflow pipe 30. The second fluid F2 flowing through the second communication area 40 communicating with the second inflow pipe 32 in the second opening 22 flows into the mixing flow path 24 formed in the mixing pipe 4b of the rotor 4 through the second inflow pipe 32.

[0023] The first fluid F1 passing through the first inflow pipe 30 and the second fluid F2 passing through the second inflow pipe 32 are mixed in the mixing flow path 24 and flow out from the outlet port 26 as a mixed fluid MF. The mixed fluid MF is appropriately used in the temperature control system 48 described later. Figure 4 and Figure 5 In the case shown, the ratio of the area of ​​the first connecting area 38 to the area of ​​the first opening 20, in other words, the opening degree of the first inflow pipe 30 is 50%. In addition, the ratio of the area of ​​the second connecting area 40 to the area of ​​the second opening 22, in other words, the opening degree of the second inflow pipe 32 is 50%. The rotation position of the rotor 4 in this case is called R2.

[0024] Figure 6 A cross-sectional view of the mixing valve 1 is shown in the case where the first communication region 38 is the entire region of the first opening 20, Figure 7 Show Figure 6 A longitudinal sectional view of the rotor 4 in the case of Figure 6 and Figure 7 In the case shown, the opening degree of the first inflow pipe 30 is 100%, the opening degree of the second inflow pipe 32 is 0%, and the first fluid F1 that has flowed only through the first communication region 38 of the first inflow pipe 30 flows in the mixing flow path 24 and flows out from the outlet port 26. On the other hand, the second fluid F2 that has passed through the second non-communication region 44 flows through the space of the valve chamber 6 and is discharged as the discharge fluid DF from the discharge port 18. In addition, the rotation position of the rotor 4 in this case is referred to as R1.

[0025] Figure 8 A cross-sectional view of the mixing valve 1 is shown in which the second communication region 40 is the entire region of the second opening 22. Fig. 9 Show Figure 8 A longitudinal sectional view of the rotor 4 in the case of Figure 8 and Fig. 9In the case shown, the opening degree of the first inflow pipe 30 is 0%, and the opening degree of the second inflow pipe 32 is 100%, and only the second fluid F2 flowing through the second communication area 40 of the second inflow pipe 32 flows in the mixing flow path 24 and flows out from the outlet port 26. On the other hand, the first fluid F1 passing through the first non-communication area 42 flows through the space of the valve chamber 6 and is discharged as the discharge fluid DF from the discharge port 18. In addition, the rotation position of the rotor 4 in this case is referred to as R3.

[0026] Fig.10 A graph showing the flow rate ratio of the first fluid F1 and the second fluid F2 in the mixed fluid MF according to the rotational position of the rotor 4 is shown. Fig.11 4 shows a graph showing the flow rate ratio of the first fluid F1 and the second fluid F2 in the discharge fluid DF corresponding to the rotational position of the rotor 4. At the rotational position R1, as Figure 6 and Figure 7 As also shown, the first fluid F1 accounts for 100% of the mixed fluid MF. In this case, in the conventional method, the second opening 22 of the second inlet port 16 is completely blocked by the rotor 4, and the second fluid F2 is blocked.

[0027] Therefore, conventionally, the flow of the second fluid F2 on the upstream side of the second inlet port 16 is completely stagnant. However, in the case of the present embodiment, at the rotation position R1, the discharge fluid DF, which is 100% of the second fluid F2, is made to flow into the valve chamber 6 and be discharged from the discharge port 18. Thus, the flows of both the first fluid F1 and the second fluid F2 on the upstream side of the mixing valve 1 are not hindered.

[0028] On the other hand, at the rotation position R2, as Figure 4 and Figure 5 As also shown, the first fluid F1 and the second fluid F2 each account for 50% in the mixed fluid MF. Therefore, in the past, the flow of the first fluid F1 on the upstream side of the first inlet port 14 and the flow of the second fluid F2 on the upstream side of the second inlet port 16 were stagnant at 1 / 2 respectively. However, in the case of this embodiment, at the rotation position R2, the discharge fluid DF, which is 50% each of the first fluid F1 and the second fluid F2, is made to flow into the valve chamber 6 and be discharged from the discharge port 18. As a result, the flow of both the first fluid F1 and the second fluid F2 on the upstream side of the mixing valve 1 is not hindered.

[0029] On the other hand, at the rotation position R3, as Figure 8 and Fig. 9As also shown, the second fluid F2 accounts for 100% of the mixed fluid MF. Therefore, in the past, the flow of the first fluid F1 on the upstream side of the first inlet port 14 was completely stagnant. However, in the case of this embodiment, at the rotation position R3, the discharge fluid DF, which accounts for 100% of the first fluid F1, flows into the valve chamber 6 and is discharged from the discharge port 18.

[0030] Thus, the flow of both the first fluid F1 and the second fluid F2 on the upstream side of the mixing valve 1 is not hindered. Thus, even if the rotation position of the rotor 1 is at any position, the flow of both the first fluid F1 and the second fluid F2 on the upstream side of the mixing valve 1 is not hindered, thereby minimizing the influence on the equipment arranged on the upstream side of the mixing valve 1.

[0031] In addition, if Figure 6 As shown in FIG. 1 , when a first line L1 connecting the rotation center C of the rotor 4 and the radial center of the first opening 20 and a second line L2 connecting the rotation center C and the radial center of the second opening 20 are set on the same radial surface X of the housing 2, the intersection angle on the side of the region where the discharge port 18 is not provided is defined as the fluid inflow angle α. In addition, a third line L3 (at the radial center of the opening of the first inflow pipe 30) connecting the rotation center C and the radial center of the first inflow pipe 30 is set on the same radial surface X of the housing 2. Figure 6 In the case of the fourth line L4 connecting the rotation center C and the radial center of the opening of the second inlet pipe 32, the intersection angle on the side of the area where the discharge port 18 is not provided is defined as the fluid mixing angle β.

[0032] At this time, the fluid mixing angle β and the fluid inflow angle α are set to different angles, and preferably, the fluid mixing angle β is smaller than the fluid inflow angle α. In the case of the present embodiment, the fluid mixing angle β is an obtuse angle (about 120 degrees) less than 180 degrees, and on the other hand, the fluid inflow angle α is substantially 180 degrees. In the mixing valve 1, by establishing such a relationship between the fluid inflow angle α and the fluid mixing angle β, it is possible to ensure that the area between the first inlet port 14 and the second inlet port 16 is wider than the rotation area of ​​the rotor 4 centered on the rotation center C. Therefore, the first non-connected area 42 and / or the second non-connected area 44 can be formed, so that the first fluid F1 and / or the second fluid F2 flows into the valve chamber 6 and is discharged from the discharge port 18 as the discharge fluid DF.

[0033] Fig.121 is a block diagram of a temperature control system 48 provided with a mixing valve 1. The temperature control system 48 is installed in a vehicle such as an electric vehicle or a hybrid vehicle, and includes a radiator cooling water circuit 50 and a battery cooling water circuit 52. In the radiator cooling water circuit 50, a heat exchange portion 54 of a cooling heat exchanger, an electric pump 56, a mixing valve 1, and a radiator 58 are sequentially interposed in the water flow direction.

[0034] In the radiator cooling water circuit 50, the cooling water cooled by the heat exchange unit 54 is sent out by the electric pump 56 and flows into the first inlet port 14 of the mixing valve 1 as the first fluid F1. Then, the cooling water as the discharge fluid DF is sent to the radiator 58 from the discharge port 18, and the cooling water is used to dissipate heat of the equipment installed in the vehicle.

[0035] On the other hand, in the battery cooling water circuit 52, the heat exchanger 60 of the heating heat exchanger, the electric pump 62, the mixing valve 1, the battery 64, and the electric powertrain 66 are sequentially interposed in the water flow direction. In the battery cooling water circuit 52, the warm water heated by the heat exchanger 60 is sent out by the electric pump 62 and flows into the second inlet port 16 of the mixing valve 1 as the second fluid F2. Then, the warm water as the mixed fluid MF is sent to the battery 64 from the outlet port 26, and the warm water heats the battery 64 exposed to the low temperature environment.

[0036] The water after heating the battery 64 is sent to the electric powertrain 66 and used for heat dissipation of the inverter, motor, etc. constituting the electric powertrain 66. In the temperature control system 48, the flow rate ratio of the first fluid F1 (cooling water) and the second fluid F2 (warm water) in the mixed fluid MF is changed by the rotation of the rotor 4, thereby cooling the battery 64 even in a high temperature environment and during long-term driving of the vehicle.

[0037] Furthermore, as described above, even if the rotation position of the rotor 4 is any position, the flow of both the first fluid F1 and the second fluid F2 on the upstream side of the mixing valve 1 is not hindered. Therefore, on the upstream side of the mixing valve 1, the flow of the first fluid F1 and the second fluid F2 does not stagnate, thereby preventing the heat exchange efficiency in the heat exchange parts 54 and 60 disposed on the upstream side of the mixing valve 1 from being reduced.

[0038] As described above, the mixing valve 1 of the present embodiment sometimes has a first non-connected area 42 formed at the first opening 20 of the first inlet port 14, and the first non-connected area 42 is connected to the valve chamber 6 in accordance with the rotation of the rotor 4, but is not connected to the first inlet pipe 30. In addition, sometimes a second non-connected area 44 is formed at the second opening 22 of the second inlet port 16, and the second non-connected area 44 is connected to the valve chamber 6 in accordance with the rotation of the rotor 4, but is not connected to the second inlet pipe 32.

[0039] The first fluid F1 and / or the second fluid F2 that respectively flow into the valve chamber 6 through the first non-connected area 42 and / or the second non-connected area 44 are discharged to the outside of the housing 2 as the discharge fluid DF via the discharge port 18. Thus, even if the rotation position of the rotor 4 is any position, the flow of both the first fluid F1 and the second fluid F2 on the upstream side of the mixing valve 1 is not hindered. Therefore, the influence on the equipment arranged on the upstream side of the mixing valve 1 can be suppressed to a minimum, and specifically, the reduction of the heat exchange efficiency in the heat exchange parts 54 and 60 as described above can be prevented.

[0040] Furthermore, the first peripheral wall 12 of the housing 2 is provided with a discharge port 18 for discharging the discharge fluid DF in addition to the first inlet port 14 for the first fluid F1 to flow in and the second inlet port 16 for the second fluid F2 to flow in. Thus, the ports 14, 16, 18 are arranged along the circumferential direction of the first peripheral wall 12 of the housing 2, so that the handling of the hoses and the like connected to the ports 14, 16, 18 becomes easy, and the workability when installing the mixing valve 1 can be improved. In addition, the hoses and the like connected to the ports 14, 16, 18 can be compactly wound along the circumferential direction of the first peripheral wall 12, so that the space around the mixing valve 1 can be saved.

[0041] In addition, the first inlet port 14, the second inlet port 16, and the discharge port 18 are provided to protrude from the first peripheral wall 12 toward the radial direction X of the housing 2 on the same radial direction X surface of the housing 2. Thus, the improvement of the workability when the mixing valve 1 is provided and the space saving around the mixing valve 1 can be further effectively promoted. Moreover, the height dimension of the mixing valve 1 can be reduced by a simple change of shortening the length of the mixing pipe 4b and the height of the cylindrical member 2b, so that the mixing valve 1 can be easily made compact.

[0042] In addition, when defining the above-mentioned fluid inflow angle α and fluid mixing angle β, the fluid mixing angle β is smaller than the fluid inflow angle α. As a result, the area between the first inlet port 14 and the second inlet port 16 can be ensured to be wider than the rotation area of ​​the rotor 4 centered on the rotation center C. Therefore, the first non-connected area 42 and / or the second non-connected area 44 can be formed, so that the first fluid F1 and / or the second fluid F2 flows into the valve chamber 6 and is discharged from the discharge port 18 as the discharge fluid DF.

[0043] Therefore, by setting the positions of the first inlet port 14 and the second inlet port 16 in the casing 2 and the positions of the first inlet pipe 30 and the second inlet pipe 32 in the rotor 4 so that the fluid mixing angle β is smaller than the fluid inflow angle α, a mixing valve 1 can be realized which does not hinder the flow of the fluid on the upstream side and can minimize the impact on the equipment arranged on the upstream side.

[0044] The above is a description of an embodiment of the present invention, but the present invention is not limited thereto and various changes can be made without departing from the scope of the present invention. Fig.13 As shown, a rotor 4 having a fluid mixing angle β of substantially 180 degrees may also be used. In this case, the second inlet port 16 may be protruded and arranged at the following position: a position substantially having an angle greater than 180 degrees from the first inlet port 14 along the clockwise circumferential direction of the first peripheral wall 12.

[0045] Thus, the fluid inflow angle α is larger than 180 degrees, and therefore, the fluid mixing angle β is smaller than the fluid inflow angle α. Therefore, in this case, the above-mentioned relationship between the fluid inflow angle α and the fluid mixing angle β also holds, and thus, a mixing valve 1 that does not hinder the flow of the fluid on the upstream side can be realized. Fig.13 As shown in the figure, the first inlet port 14 , the second inlet port 16 , and the discharge port 18 are not provided to protrude from the first peripheral wall 12 in the radial direction X of the housing 12 .

[0046] Furthermore, the mixing valve 1 of this embodiment is not limited to mixing cooling water and warm water in the temperature control system 48 described above, but can be used for mixing various fluids including gases, not limited to liquids, in systems that perform various types of adjustments other than temperature adjustment. (Explanation of symbols)

[0047] 1Mixing valve 2 Shell 4 rotors 6 valve chamber 12First wall 14First entry port 16 Second entry port 18 discharge port 20 First Opening 22 Second opening 24 Mixing flow path 26 export ports 28 Second peripheral wall 30 First inflow pipe 32 Second inflow pipe 38 First connected area 40 Second connected area 42 The first disconnected area 44 Second non-connected area C Rotation Center F1 First Fluid F1 Second Fluid MF mixed fluid DF discharge fluid L1 First Line L2 Second Line L3 Third Line L4 Fourth Line α Fluid inflow angle β Fluid mixing angle X Radial Y axis.

Claims

1. A mixing valve, characterized in that: have: a cylindrical housing having a valve chamber formed therein; and a rotor, wherein the rotor is rotatably inserted into the valve chamber, The housing has a first inlet port on a first peripheral wall of the housing, the first inlet port is opened to have a first opening in the valve chamber and allows a first fluid to flow in; and a second inlet port, the second inlet port being opened to have a second opening in the valve chamber and allowing a second fluid to flow in, The rotor has, on the second peripheral wall of the rotor: a first inlet pipe communicating with the first opening; and a second inlet pipe communicating with the second opening, and an opening with a mixing flow path at one axial end of the rotor. The mixing flow path is connected to the first inflow pipe and the second inflow pipe, and the first fluid flowing into the first inflow pipe and / or the second fluid flowing into the second fluid pipe flows into the mixing flow path as a mixed fluid. The housing has a discharge port on the first peripheral wall and an outlet port connected to the mixing flow path. The discharge port discharges the first fluid and / or the second fluid that flow into the valve chamber respectively without passing through the first inlet pipe and / or the second inlet pipe of the rotor to the outside of the housing as discharge fluid.

2. The mixing valve according to claim 1, characterized in that: A first non-communication region is formed at the first opening of the housing in response to the rotation of the rotor, and the first non-communication region is not communicated with the first inflow pipe but is communicated with the valve chamber.

3. The mixing valve according to claim 1, characterized in that A second non-communication region is formed at the second opening of the housing in response to the rotation of the rotor, and the second non-communication region is not communicated with the second inflow pipe but is communicated with the valve chamber.

4. The mixing valve according to claim 1, characterized in that: The first inlet port, the second inlet port, and the exhaust port are provided on the same radial surface of the housing and protrude from the first peripheral wall in the radial direction of the housing.

5. The mixing valve according to any one of claims 1 to 4, characterized in that: The intersection angle between a first line connecting the rotation center of the rotor and the radial center of the first opening and a second line connecting the rotation center and the radial center of the second opening on the same radial surface of the housing is defined as a fluid inflow angle, When the intersection angle between a third line connecting the rotation center and the radial center of the opening of the first inlet pipe and a fourth line connecting the rotation center and the radial center of the opening of the second inlet pipe on the same radial plane is defined as the fluid mixing angle, The fluid mixing angle is different from the fluid inflow angle.

6. The mixing valve according to claim 5, characterized in that The fluid mixing angle is smaller than the fluid inflow angle.

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