Electric valve body and electric valve

Abstract

An electric valve body 101 comprising: a body 102 having a first valve body 140A and a second valve body 140B arranged in parallel and configured to be individually driven, and a first valve port 112A and a second valve port 112B whose openings are adjusted by the first valve body 140A and the second valve body 140B, respectively; drive mechanisms 120 configured to drive the first valve body 140A and the second valve body 140B, respectively, when rotational torque is input thereto; and a first reduction mechanism RA and a second reduction mechanism RB having a first input shaft body 160A and a second input shaft body 160B that overlap in an axial direction and are coaxial with each other, the first reduction mechanism RA and the second reduction mechanism RB being configured to transmit the input rotational torque to the respective drive mechanisms 120.

Description

Electric valve body and electric valve

[0001] The present disclosure relates to an electric valve body and an electric valve.

[0002] For example, in Japanese Patent Application Laid-Open No. 2024-120283, a valve body having a valve chamber communicating with an inflow passage and an outflow passage, a valve element that moves forward and backward with respect to a valve seat, an electric motor having a rotor and a stator that drive the valve element, a can that houses the rotor inside and arranges the stator outside, a connecting member that connects the can and the valve body, and a seal member that extends so as to surround the connecting member and abuts against the outer peripheral surface of the connecting member and the inner peripheral surface of the housing of the electric motor in a pressed state are provided. In the electric valve, the connecting member is formed by press working, has a cylindrical portion, a rigid component is inserted into the cylindrical portion, and the cylindrical portion, the rigid component, and the seal member are arranged so as to overlap each other in the axial direction of the electric valve.

[0003] In the technology described in Japanese Patent Application Laid-Open No. 2024-120283, in order to control fluids flowing through a plurality of flow paths, it is necessary to prepare electric valves corresponding to the number of flow paths. For this reason, since a conduction mechanism for inputting the rotational torque for driving the valve element that controls the flow path is required for each number of flow paths, the space occupied by the conduction mechanism in the electric valve tends to be large.

[0004] An object of the present disclosure is to provide an electric valve body and an electric valve in which the space occupied by a conduction mechanism for inputting rotational torque for driving a plurality of valve elements can be easily reduced.

[0005] The electric valve body according to the first aspect includes a plurality of valve elements arranged in parallel and each driven, a body having a plurality of valve ports for adjusting the opening degree of each of the plurality of valve elements, a plurality of drive mechanisms provided for each of the plurality of valve elements to drive the valve element when rotational torque is input, and a plurality of input shaft bodies that overlap in the axial direction and have the same axis center, and a conduction mechanism that transmits the input rotational torque to each of the drive mechanisms.

[0006] This electric valve body consists of multiple valve bodies arranged in parallel, each adjusting the opening degree of multiple valve ports. Multiple drive mechanisms drive each valve body. Multiple input shafts, overlapping axially and sharing the same axis, transmit rotational torque to their respective drive mechanisms via a transmission mechanism, thereby driving the valve bodies.

[0007] Therefore, in this embodiment, the electric valve body tends to require less space occupied by the transmission mechanism compared to a configuration where the entire transmission mechanism that inputs rotational torque to drive multiple valve bodies is in parallel.

[0008] The electric valve body of the second embodiment is the electric valve body of the first embodiment, wherein the body is formed by dividing the valve chambers into a plurality of sections, and at least one of the plurality of valve chambers is provided with a sealing structure to prevent fluid from flowing out into other valve chambers different from that valve chamber.

[0009] This electric valve body has multiple valve elements that regulate the flow rate of fluid that flows from the inlet passage through a valve chamber with a valve opening to the outlet passage. In addition, at least one of the multiple valve chambers is provided with a sealing structure that blocks the flow path of a different valve chamber. Therefore, this embodiment of the electric valve body can control the fluid in multiple pipes with different fluids using a single electric valve body.

[0010] The electric valve body of the third embodiment is the electric valve body of the second embodiment, wherein the sealing structure is provided in all valve chambers except one of the plurality of valve chambers, and the one valve chamber is provided with a pressure reduction structure that reduces pressure changes due to the operation of the drive mechanism.

[0011] This electric valve body is equipped with a sealing structure in all but one of its valve chambers to prevent fluid from flowing out of that chamber to another. Furthermore, in the one valve chamber that does not have a sealing structure, the electric valve body is equipped with a pressure reduction structure to mitigate pressure changes caused by the operation of the drive mechanism.

[0012] Therefore, in the electric valve body according to this embodiment, the operation of the drive mechanism that drives each valve body can suppress changes in pressure that make it difficult to drive the valve body.

[0013] The electric valve body of the fourth embodiment is an electric valve body according to any one of the first to third embodiments, wherein a member that transmits rotational torque to the input shaft or the transmission mechanism passes through the center, and further comprises a partition structure that is screwed into the body and separates the inside from the outside of the electric valve body.

[0014] In this electric valve body, the member that transmits rotational torque to the input shaft or transmission mechanism, which passes through the compartment structure, is located in the center of the compartment structure when viewed from the direction of movement of the valve body. The compartment structure is screwed into the main body, separating the inside from the outside of the electric valve body. Therefore, in this embodiment of the electric valve body, assembly is improved compared to cases where the axis of the member that transmits rotational torque to the input shaft or transmission mechanism is located at a different location from the center of the compartment structure.

[0015] The fifth embodiment of the electric valve body is an electric valve body according to any one embodiment of the first to third embodiments, wherein a member that transmits rotational torque to the input shaft or the transmission mechanism passes through the center, and further comprises a partition structure that is fixed to the body using a fixing member and separates the inside and outside of the electric valve body.

[0016] In this electric valve body, the compartment structure is fixed to the body using a fixing member, separating the inside and outside of the electric valve body. In this embodiment of the electric valve body, the position through which the member that transmits rotational torque to the input shaft or transmission mechanism passes is not limited, thus improving the design flexibility compared to the case where the compartment structure is screwed into the body.

[0017] The sixth embodiment of the electric valve comprises an electric valve body described in any one of the first to fifth embodiments, and a drive unit that inputs rotational torque to each of the plurality of input shafts.

[0018] In this embodiment of the electric valve, the space occupied by the transmission mechanism can be made smaller compared to a case where the entire transmission mechanism that inputs rotational torque to drive multiple valve bodies is in parallel.

[0019] According to this disclosure, an electric valve body and an electric valve are provided, which can use a motor in which multiple output shafts, each driven by a motor, are coaxially arranged, to drive multiple valve bodies.

[0020] This is a diagram illustrating the electric valve and electric valve body according to the first embodiment. This is a diagram illustrating how the gears mesh in the electric valve according to the first embodiment. This is a diagram illustrating the electric valve and electric valve body according to the second embodiment. This is a diagram illustrating how the gears mesh in the electric valve according to the second embodiment. This is a diagram illustrating the electric valve and electric valve body according to the third embodiment. This is a diagram illustrating the electric valve and electric valve body according to the fourth embodiment.

[0021] Hereinafter, an example of an embodiment of this disclosure will be described with reference to the drawings. In each drawing, the same or equivalent components and parts are given the same reference numerals. Also, the dimensional ratios in the drawings are exaggerated for illustrative purposes and may differ from the actual ratios.

[0022] In each figure, the X-direction of the arrow represents the width direction of the electric valve, the Y-direction of the arrow represents the depth direction of the electric valve, and the Z-direction of the arrow represents the height direction of the electric valve. In this disclosure, the Z-direction of the arrow coincides with the direction of movement of the valve body in each embodiment.

[0023] [First Embodiment] (Configuration) Figure 1 shows an electric valve 100 according to the first embodiment of the present disclosure. As shown in Figure 1, the electric valve 100 includes an electric valve body 101 and a first motor 170A and a second motor 170B that input rotational torque to a first input shaft 160A and a second input shaft 160B of the electric valve body 101, respectively.

[0024] As shown in Figure 1, the electric valve body 101 comprises a first valve body 140A and a second valve body 140B, a body 102 that houses the first valve body 140A and the second valve body 140B, and two drive mechanisms 120 that drive the first valve body 140A and the second valve body 140B, respectively. The electric valve body 101 also comprises a first input shaft 160A and a second input shaft 160B, a first reduction mechanism RA and a second reduction mechanism RB, and a cover 190.

[0025] As shown in Figure 1, the main body 102 has a first valve chamber 108A, a first inlet passage 104A, and a first outlet passage 106A. Also as shown in Figure 1, the main body 102 has a second valve chamber 108B, a second inlet passage 104B, and a second outlet passage 106B. The main body 102 also has a reduction gear mechanism housing section 168.

[0026] The first inlet passage 104A is a portion that opens to the left in the width direction of the main body 102 (left side in the drawing in Figure 1), as shown in Figure 1. A pipe (not shown) is connected to the first inlet passage 104A, and fluid flows into it.

[0027] The fluid flowing in from the first inlet passage 104A flows into the first valve chamber 108A. The first valve chamber 108A is provided with a first valve seat 110A, which has a first valve opening 112A formed therein, and the first valve body 140A, which will be described later, is in contact with the first valve seat 110A.

[0028] Furthermore, the first valve chamber 108A is connected to the first outlet passage 106A. In this embodiment, the first outlet passage 106A opens in the depth direction of the main body 102 (the depth direction of the paper in Figure 1). A pipe (not shown) is connected to the first outlet passage 106A, and fluid flows out from the first valve chamber 108A.

[0029] The second inlet passage 104B is a portion that opens to the right in the width direction of the main body 102 (right side in the drawing in Figure 1), as shown in Figure 1. A pipe (not shown) is connected to the second inlet passage 104B, and fluid flows into it.

[0030] The fluid flowing in from the second inlet passage 104B flows into the second valve chamber 108B. The second valve chamber 108B is provided with a second valve seat 110B in which a second valve opening 112B is formed, and the second valve body 140B, which will be described later, comes into contact with the second valve opening 112B.

[0031] Furthermore, the second valve chamber 108B is connected to the second outlet passage 106B. In this embodiment, the second outlet passage 106B opens in the depth direction of the main body 102 (the depth direction of the paper in Figure 1). A pipe (not shown) is connected to the second outlet passage 106B, and fluid flows out from the second valve chamber 108B.

[0032] In other words, in the main body 102 of this embodiment, the first valve chamber 108A and the second valve chamber 108B are formed side by side in the width direction. As shown in Figure 1, in this embodiment, the second valve opening 112B is narrower than the first valve opening 112A. In other words, in this embodiment, the fluid flowing from the second inlet passage 104B to the second outlet passage 106B has a smaller flow rate than the fluid flowing from the first inlet passage 104A to the first outlet passage 106A.

[0033] As shown in Figure 1, above the first valve chamber 108A and the second valve chamber 108B (upper side in Figure 1), a reduction gear housing section 168 is formed to accommodate the transmission mechanism, which will be described later. More specifically, the reduction gear housing section 168 is a space that extends in the width direction from above the first valve chamber 108A to above the second valve chamber 108B. In addition, an outer wall 166, which also serves as the side surface of the main body 102, is formed on the widthwise side surface of the reduction gear housing section 168. In other words, the main body 102 opens upward by the outer wall 166. In this embodiment, a female screw 194 is formed on the inner circumferential surface of the outer wall 166.

[0034] As shown in Figure 1, the first valve chamber 108A and the second valve chamber 108B are formed by being separated by a partition wall 114 that extends vertically through the center of the width direction of the main body 102. In other words, in this embodiment, the first valve chamber 108A and the second valve chamber 108B are aligned in the width direction and separated by the partition wall 114.

[0035] The main body 102 may be made of any material that does not deform easily, but as an example, it is made of an aluminum alloy.

[0036] Furthermore, as shown in Figure 1, in this embodiment, the area above the reduction gear housing 168 is separated from the outside of the electric valve body 101 by a cover 190. The cover 190 in this embodiment is a disc-shaped member that closes the opening of the outer wall 166 which opens upward as shown in Figure 1, and has a hole in the center through which the first input shaft 160A and the second input shaft 160B pass. Male threads 192 are formed on the outer circumferential surface of the cover 190.

[0037] In this embodiment, as shown in Figure 1, the male threads 192 of the cover 190 are screwed into the female threads 194 formed on the inner circumferential surface of the outer wall 166. In other words, in this embodiment, the electric valve body 101 forms a reduction gear housing 168 when the cover 190 is screwed into the body 102. That is, in this embodiment, the cover 190 is an example of a "compartment structure" in this disclosure. In this embodiment, an O-ring 196 is attached to the outer circumferential surface of the cover 190. Therefore, when the cover 190 is screwed into the outer wall 166, the gap that is created between the inner circumferential surface of the outer wall 166 and the outer circumferential surface of the cover 190 is sealed by the O-ring 196. As a result, the O-ring 196 seals the gap between the outer wall 166 and the cover 190, preventing fluid from leaking out of the reduction gear housing 168.

[0038] As shown in Figure 1, the first valve chamber 108A houses the first valve body 140A and the drive mechanism 120.

[0039] The first valve body 140A is a component that adjusts the fluid flow rate by being driven relative to the first valve seat 110A and adjusting the opening degree of the first valve port 112A. More specifically, the first valve body 140A blocks the first valve port 112A while in contact with the first valve seat 110A, thereby stopping the fluid flowing in from the first inlet passage 104A at the first valve port 112A. Furthermore, the first valve body 140A is driven upward to separate from the first valve seat 110A, allowing the fluid flowing in from the first inlet passage 104A to flow out from the first outlet passage 106A.

[0040] Furthermore, a drive mechanism 120 for driving the first valve body 140A is provided above the first valve body 140A. More specifically, when rotational torque is input from the first output shaft 162A, which will be described later, the drive mechanism 120 converts the rotational torque into linear motion and transmits it to the driver 122. Any components may be used for the drive mechanism 120, but as an example, as shown in Figure 1, it has a guide member 121 with an internal thread formed on its inner circumference and a driver 122 having an external thread that screws into the guide member 121, receiving rotational torque from the first output shaft 162A and being movable in the vertical direction.

[0041] Then, as the driver 122 of the drive mechanism 120 is driven in the vertical direction, the first valve body 140A, which is connected below the driver 122 via the first bush 123A, moves in the vertical direction.

[0042] As shown in Figure 1, the first valve body 140A is made movable in the vertical direction by the first guide member 124A, while movement in other directions (for example, the width direction and the depth direction) is restricted. The first guide member 124A is an annular member whose outer circumferential surface fits into the inner circumferential surface of the first valve chamber 108A, and whose inner circumferential surface slides with the valve body. Therefore, the first valve body 140A can be driven in the vertical direction while sliding with the inner circumferential surface of the first guide member 124A.

[0043] Furthermore, as shown in Figure 1, the first valve body 140A is biased upward by the first coil spring 128A. More specifically, when the first valve body 140A is in contact with the first valve seat 110A, the first coil spring 128A is compressed by the first guide member 124A and the first bush 123A. The natural length of the first coil spring 128A can be set in any way, but it is preferable that the first coil spring 128A is compressed more than its natural length even when the first valve body 140A is furthest from the first valve seat 110A (i.e., when the opening of the first valve port 112A is fully open).

[0044] As shown in FIG. 1, the first guide member 124A is structured such that the pressure difference between the upper and lower sides is reduced. More specifically, as shown in FIG. 1, a through-hole 126 is formed in the first guide member 124A outside the first valve body 140A when viewed from the axial center of the first valve body 140A (the center of the first valve body 140A when viewed from the direction in which the first valve body 140A is driven). As a result, since the upper and lower sides of the first guide member 124A are connected, even when the first valve body 140A is driven, the pressure difference between the upper and lower sides of the first guide member 124A is reduced. More specifically, as will be described later, even when the volume inside the first valve chamber 108A changes due to the vertical movement of the first valve body 140A, it is difficult for a differential pressure to occur between the upper and lower sides of the first guide member 124A. That is, the opening of the through-hole 126 in the first guide member 124A is an example of the "pressure reduction structure" in the present embodiment.

[0045] As shown in FIG. 1, the guide member 121 also has a through-hole 130 formed therein, similar to the first guide member 124A. As a result, since the upper and lower sides of the guide member 121 are connected, even when the first valve body 140A is driven, the pressure difference between the upper and lower sides of the guide member 121 is reduced. More specifically, as will be described later, even when the volume inside the first valve chamber 108A changes due to the vertical movement of the first valve body 140A, it is difficult for a differential pressure to occur between the upper and lower sides of the guide member 121. That is, the opening of the through-hole 130 in the guide member 121 is an example of the "pressure reduction structure" in the present embodiment.

[0046] The second valve chamber 108B houses a second valve body 140B and a drive mechanism 120.

[0047] Similar to the first valve body 140A, the second valve body 140B is a member that drives against the second valve seat 110B and adjusts the opening degree of the second valve port 112B to regulate the flow rate of the fluid. As shown in FIG. 1, the second valve body 140B is arranged in parallel with the first valve body 140A.

[0048] Further, similar to the first valve body 140A, the drive mechanism 120 is provided above the second valve body 140B. The configuration and operation of the drive mechanism 120 are the same as those of the drive mechanism 120 that drives the first valve body 140A. More specifically, when rotational torque is input from a second output shaft body 162B, which will be described later, the drive mechanism 120 converts the rotational torque into linear motion and transmits it to the driver 122.

[0049] Further, similar to the first valve body 140A, the second valve body 140B is movable in the vertical direction by a second guide member 124B and is restricted from moving in other directions (for example, the width direction and the depth direction).

[0050] Further, similar to the first valve body 140A, the second valve body 140B is biased in the vertical direction by a second coil spring 128B. More specifically, the second coil spring 128B is compressed by the second guide member 124B and the second bush 123B when the second valve body 140B is in contact with the second valve seat 110B.

[0051] Further, as shown in FIG. 1, a through hole 130 is opened in a guide member 121 of the drive mechanism 120 that drives the second valve body 140B, similar to the drive mechanism 120 that drives the first valve body 140A. As a result, since the upper and lower sides of the guide member 121 are connected, even when the second valve body 140B is driven, the difference in pressure between the upper and lower sides of the guide member 121 is reduced. More specifically, even when the volume inside the second valve chamber 108B changes due to the vertical movement of the second valve body 140B, which will be described later, it is difficult for a differential pressure to occur between the upper and lower sides of the guide member 121. That is, the opening of the through hole 130 in the guide member 121 of the drive mechanism 120 that drives the second valve body 140B is an example of the "pressure reduction structure" in the present embodiment.

[0052] On the other hand, as shown in FIG. 1, the second guide member 124B is not structured to reduce the pressure between the upper and lower sides. More specifically, unlike the first guide member 124A, no through hole is formed in the second guide member 124B.

[0053] Furthermore, as shown in Figure 1, the second valve body 140B in this embodiment is in contact with the second guide member 124B via the O-ring 132. Therefore, in this embodiment, the fluids in the second valve chamber 108B do not mix with each other on the upper and lower sides of the second guide member 124B. In other words, even when the second valve body 140B is driven, the pressure change on the upper and lower sides of the second guide member 124B is not reduced. Note that in this embodiment, the contact between the second valve body 140B and the second guide member 124B via the O-ring 132 is an example of a "seal structure" in this disclosure.

[0054] As shown in Figure 1, in this embodiment, the first valve opening 112A is radially larger than the second valve opening 112B. Also, the first valve chamber 108A is radially larger than the second valve chamber 108B. Therefore, in this embodiment, the first valve seat 110A, the first valve body 140A, and the first guide member 124A are radially larger than the second valve seat 110B, the second valve body 140B, and the second guide member 124B, respectively.

[0055] The first input shaft 160A and the second input shaft 160B are shafts that extend upward through the central part of the cover 190 of the main body 102, as shown in Figure 1. More specifically, the first input shaft 160A is a solid member. The second input shaft 160B is a hollow member through which the first input shaft 160A passes vertically. In other words, the first input shaft 160A and the second input shaft 160B overlap in the axial direction.

[0056] The first input shaft 160A and the second input shaft 160B are connected to the first output shaft 162A and the second output shaft 162B, respectively, by the first reduction mechanism RA and the second reduction mechanism RB, which are housed in the reduction mechanism housing section 168. In this embodiment, the first reduction mechanism RA consists of a first gear GA1, a second gear GA2, a third gear GA3, and a fourth gear GA4. The second reduction mechanism RB consists of a first gear GB1 and a second gear GB2.

[0057] As shown in Figure 1, the first input shaft 160A has the first motor 170A connected to its upper side. The first input shaft 160A also has a first gear GA1 formed on its lower side. That is, the first input shaft 160A inputs the rotational torque received from the first motor 170A to other components via the first gear GA1. In this embodiment, the lower end of the first input shaft 160A is loosely fitted into a bearing portion 164 formed on the main body 102.

[0058] Figure 2 is a view of the inside of the reduction mechanism housing 168 in this embodiment, seen from above the electric valve body 101. As shown in Figure 2, in this embodiment, the first gear GA1 meshes with the second gear GA2 of the intermediate member IA inside the reduction mechanism housing 168. The intermediate member IA also has a second gear GA2 and a third gear GA3. The second gear GA2 and the third gear GA3 have the same axis. The third gear GA3 of the intermediate member IA meshes with the fourth gear GA4 of the first output shaft 162A. The first output shaft 162A then inputs rotational torque to the driver 122 of the drive mechanism 120, as shown in Figure 1.

[0059] In this way, rotational torque is transmitted from the first input shaft 160A to the first output shaft 162A via the first gear GA1 to the fourth gear GA4 of the first reduction mechanism RA. That is, the first input shaft 160A and the first reduction mechanism RA are examples of a part of the "transmission mechanism" in this embodiment.

[0060] Furthermore, as shown in Figure 1, the second input shaft 160B has the second motor 170B connected to its upper side. The second input shaft 160B also has the first gear GB1 formed on its lower side. In other words, the second input shaft 160B inputs the rotational torque received from the second motor 170B to other components via the first gear GB1.

[0061] As shown in Figure 2, in this embodiment, the first gear GB1 meshes with the second gear GB2 of the second output shaft 162B inside the reduction mechanism housing 168. The second output shaft 162B then inputs rotational torque to the driver 122 of the drive mechanism 120, as shown in Figure 1.

[0062] In this way, rotational torque is transmitted from the second input shaft 160B to the second output shaft 162B via the first gear GB1 and the second gear GB2 of the second reduction mechanism RB. In other words, the second input shaft 160B and the second reduction mechanism RB are examples of a part of the "transmission mechanism" in this embodiment.

[0063] In this embodiment, the first input shaft 160A and the second input shaft 160B have the same axis. In other words, when viewed from above the electric valve body 101, the centers of the first input shaft 160A and the second input shaft 160B coincide.

[0064] Furthermore, in this embodiment, the axes of the first input shaft 160A and the second input shaft 160B are located in the center of the lid 190 in the width and depth directions. In other words, the axis of the lid 190, which is screwed into the main body 102, coincides with the axes of the first input shaft 160A and the second input shaft 160B.

[0065] The first motor 170A is connected to the first input shaft 160A as shown in Figure 1. The first motor 170A inputs rotational torque to the first input shaft 160A based on control commands from a controller (not shown). Any type of motor can be used as the first motor 170A, but a stepping motor is used as an example.

[0066] The second motor 170B is a so-called hollow motor and is connected to the second input shaft 160B as shown in Figure 1. Also, as shown in Figure 1, the first input shaft 160A passes through the second motor 170B in the direction of arrow Z. The second motor 170B inputs rotational torque to the second input shaft 160B based on control commands from a controller (not shown). Any type of motor can be used as the second motor 170B, but a stepping motor is used as an example.

[0067] The first motor 170A and the second motor 170B are examples of the "drive unit" in this disclosure. In the above description, the first motor 170A and the second motor 170B were described as separate motors, but the invention is not limited to this, and they may be the same motor. In other words, in this embodiment, the configuration of the drive unit is not particularly limited as long as it is possible to input rotational torque to the first input shaft 160A and the second input shaft 160B, respectively.

[0068] (Assembly Procedure) In this embodiment, the electric valve 100 is assembled by following the procedure below.

[0069] First, as shown in Figure 1, the electric valve body 101 is assembled to the main body 102 in order from the lower part. Specifically, for the first valve chamber 108A, the first valve seat 110A, the first valve body 140A, the first guide member 124A, the first coil spring 128A, the first bush 123A, the guide member 121, and the driver 122 are inserted into the first valve chamber 108A from above in this order. Similarly, for the second valve chamber 108B, the second valve seat 110B, the second valve body 140B with the O-ring 132 assembled, the second guide member 124B, the second coil spring 128B, the second bush 123B, the guide member 121, and the driver 122 are inserted into the second valve chamber 108B from above in this order.

[0070] Then, by assembling the intermediate member IA, the fourth gear GA4 to which the first output shaft 162A is attached, and the first input shaft 160A from above in this order, the transmission mechanism from the first input shaft 160A to the drive mechanism 120 that drives the first valve body 140A is assembled. Similarly, by assembling the second gear GB2 to which the second output shaft 162B is attached, and the second input shaft 160B, the transmission mechanism from the second input shaft 160B to the drive mechanism 120 that drives the second valve body 140B is assembled.

[0071] Subsequently, the cover 190 is screwed onto the main body 102, the second motor 170B is connected to the second input shaft 160B, and the first motor 170A is connected to the first input shaft 160A, thereby assembling the electric valve 100 in this embodiment.

[0072] Next, the operation and effects of the electric valve 100 and electric valve body 101 according to this embodiment will be explained.

[0073] (Operation and Effects) In this embodiment, the electric valve body 101 has a first valve body 140A and a second valve body 140B arranged in parallel. The first valve body 140A and the second valve body 140B adjust the opening degree of the first valve port 112A and the second valve port 112B, respectively. The first valve body 140A and the second valve body 140B are each driven by a drive mechanism 120. The first input shaft body 160A and the second input shaft body 160B, which overlap in the axial direction and have the same axis, transmit rotational torque to the respective drive mechanisms 120 via the first reduction mechanism RA and the second reduction mechanism RB, thereby driving the first valve body 140A and the second valve body 140B.

[0074] Furthermore, in the electric valve body 101 according to this embodiment, the drive unit for driving the first valve body 140A and the second valve body 140B can use a first motor 170A and a second motor 170B, which are motors with two coaxial output shafts for driving each of them. For this reason, the electric valve body 101 according to this embodiment can easily reduce the space occupied by the transmission mechanism compared to the case where the entire transmission mechanism that inputs the rotational torque to drive the first valve body 140A and the second valve body 140B is in parallel. In other words, the electric valve body 101 according to this embodiment is less likely to be large compared to the case where the location of the first motor 170A and the location of the second motor 170B are different.

[0075] Furthermore, in this embodiment, the electric valve body 101 has a first valve body 140A and a second valve body 140B that regulate the flow rate of fluid from the first inlet passage 104A and the second inlet passage 104B through the first valve chamber 108A and the second valve chamber 108B, which are formed by the first valve port 112A and the second valve port 112B, to the first outlet passage 106A and the second outlet passage 106B, respectively. In addition, of the first valve chamber 108A and the second valve chamber 108B of the body 102, the second valve chamber 108B is provided with a seal structure that blocks the flow path between the second valve chamber 108B and the first valve chamber 108A. For this reason, in this embodiment, the electric valve body 101 can control the fluids in multiple pipes with different fluids flowing through them using a single electric valve body 101.

[0076] Furthermore, in the electric valve body 101 according to this embodiment, the first valve chamber 108A, which does not have a sealing structure, is provided with a pressure reduction structure that reduces pressure changes based on the operation of the drive mechanism 120. Therefore, in the electric valve body 101 according to this embodiment, it is possible to suppress the pressure changes in the first valve chamber 108A or the second valve chamber 108B that occur when the first valve body 140A or the second valve body 140B is driven, which would otherwise make it difficult to drive the first valve body 140A or the second valve body 140B.

[0077] Furthermore, in this embodiment, the electric valve body 101 has a first input shaft 160A and a second input shaft 160B that pass through the cover 190, and these are located in the center of the cover 190 when viewed from the direction of movement of the first valve body 140A and the second valve body 140B. The cover 190 is then screwed into the body 102, separating the inside from the outside of the electric valve body 101. Therefore, in this embodiment of the electric valve body 101, assembly is improved compared to the case where the axis of the first input shaft 160A or the second input shaft 160B is located at a different location from the center of the first valve body 140A and the second valve body 140B.

[0078] Furthermore, in the electric valve 100 according to this embodiment, the drive unit for driving the first valve body 140A and the second valve body 140B can use a first motor 170A and a second motor 170B, each having two coaxial output shafts that drive them. In other words, in the electric valve body 101 according to this embodiment, the electric valve body 101 is less likely to become larger compared to the case where the location of the first motor 170A and the location of the second motor 170B are different.

[0079] (Modification) In the above description, we have described a configuration in which fluid flows in from the first inlet passage 104A and the second inlet passage 104B, respectively, and flows out from the first outlet passage 106A and the second outlet passage 106B after passing through the first valve port 112A and the second valve port 112B. The direction in which the fluid flows for the electric valve 100 in this embodiment is not limited to this. That is, even in the case shown in Figure 1, where fluid flows in from the first outlet passage 106A and the second outlet passage 106B, respectively, and flows out from the first inlet passage 104A and the second inlet passage 104B, the above-described operation and effect can be obtained.

[0080] Furthermore, in the above description, the first valve body 140A and the second valve body 140B were of different sizes. In the electric valve 100 of this embodiment, the sizes of the first valve body 140A and the second valve body 140B may be the same. In other words, the flow rate of the fluid that flows in from the first inlet passage 104A and flows out from the first outlet passage 106A, and the flow rate of the fluid that flows in from the second inlet passage 104B and flows out from the second outlet passage 106B, which are targeted by the electric valve 100 of this embodiment, may be the same.

[0081] Furthermore, in the above description, the first valve body 140A and the second valve body 140B were valve bodies that were driven for the first valve port 112A and the second valve port 112B, respectively. However, the method of driving the valve bodies applied in the electric valve 100 of this embodiment is not limited to this. For example, one of the valve bodies may be a so-called ball valve that functions as a valve by rotating around the axis of rotation of the output shaft body.

[0082] In the above description, the first input shaft 160A and the second input shaft 160B passed through the cover 190. However, the configuration in this embodiment is not limited to this. For example, instead of the first input shaft 160A and the second input shaft 160B, if a member that transmits rotational torque to the first input shaft 160A and the second input shaft 160B is provided, the member may pass through the cover 190. Specifically, the rotating shaft of the first motor 170A may pass through the cover 190, and the rotating shaft and the first input shaft 160A may be connected by a coupling inside the reduction mechanism housing 168. In this case, the rotating shaft of the first motor 170A is an example of the "member that transmits rotational torque to the transmission mechanism" in this disclosure.

[0083] Next, the electric valve 200 according to the second embodiment of this disclosure will be described with reference to Figures 3 and 4. In the description of the electric valve 200 according to this embodiment, components similar to those of the electric valve 100 according to the first embodiment will be denoted by the same reference numerals as in the first embodiment, and their description may be omitted.

[0084] [Second Embodiment] (Configuration) As shown in Figure 3, in this embodiment, the lid 290 is fitted inside the outer wall 266 at the upper part of the main body 202.

[0085] In this embodiment, the lid 290 is fixed to the main body 202 by retaining screws 292 via a retaining plate 294, as shown in Figure 3. More specifically, the retaining plate 294, which is fixed to the upper surface of the main body 202 by retaining screws 292, presses the lid 290, which is fitted into a hole in the upper surface of the main body 202, from above. By pressing the lid 290 with the retaining plate 294, the lid 290 is fixed to the main body 202. The retaining screw 292 is an example of a "fixing member" in this disclosure. Also, in this embodiment, unlike the first embodiment, the lid 290 does not have male threads. Similarly, unlike the first embodiment, the outer wall 266 does not have female threads.

[0086] In this embodiment, an O-ring 196 is placed on the surface where the lid 290 and the main body 202 come into contact. More specifically, as shown in Figure 3, the O-ring 196 is attached to the outer circumferential surface of the lid 290. With the lid 290 fixed to the outer wall 266, the O-ring 196 seals the gap between the main body 202 and the lid 290, thereby preventing fluid from leaking out of the reduction gear housing 268.

[0087] Furthermore, in this embodiment, as shown in Figure 3, the axes of the first input shaft 160A and the second input shaft 160B coincide with the axis of the second valve body 140B. In other words, the first input shaft 160A, the second input shaft 160B, and the second valve body 140B are aligned in the vertical direction.

[0088] In this embodiment, the second input shaft 160B has a third gear GB3 formed on its lower side. That is, the second input shaft 160B inputs the rotational torque received from the second motor 170B to other components via the third gear GB3.

[0089] Figure 4 is a view of the inside of the reduction mechanism housing 268 in this embodiment, seen from above the electric valve body 201. As shown in Figure 4, in this embodiment, the third gear GB3 meshes with the fourth gear GB4 of the intermediate member IB inside the reduction mechanism housing 268. The intermediate member IB also has the fourth gear GB4 and the fifth gear GB5. The axes of the fourth gear GB4 and the fifth gear GB5 coincide. The fifth gear GB5 of the intermediate member IB meshes with the sixth gear GB6 of the first output shaft 162A. The first output shaft 162A then inputs rotational torque to the driver 122 of the drive mechanism 120, as shown in Figure 3.

[0090] In this way, rotational torque is transmitted from the second input shaft 160B to the first output shaft 162A via the third gear GB3 to the sixth gear GB6 of the second reduction mechanism. In other words, the second input shaft 160B and the second reduction mechanism are examples of a part of the "transmission mechanism" in this embodiment.

[0091] Furthermore, in this embodiment, the lower side of the first input shaft 160A is connected to the drive mechanism 120 that drives the second valve body 140B. More specifically, as shown in Figure 3, the first input shaft 160A does not have a reduction mechanism and directly inputs rotational torque to the drive mechanism 120. In other words, as shown in Figure 3, the first input shaft 160A in this embodiment also serves as the second output shaft 162B in the first embodiment. In other words, rotational torque is input to the drive mechanism 120 that drives the second valve body 140B without going through a reduction mechanism. That is, the first input shaft 160A, which also serves as the second output shaft 162B, is an example of a part of the "transmission mechanism" in this embodiment.

[0092] In this embodiment, it is preferable that the drive mechanism 120, which receives rotational torque without the need for a reduction mechanism, has a smaller flow rate for the fluid that adjusts the opening between the first valve body 140A and the second valve body 140B. More specifically, as shown in Figure 3, it is preferable that the drive mechanism 120 that drives the second valve body 140B, which has a smaller radial size than the first valve body 140A, is the drive mechanism 120 that receives rotational torque without the need for a reduction mechanism. Furthermore, it is even more preferable that the valve body driven by the drive mechanism 120 that receives rotational torque without the need for a reduction mechanism does not have an O-ring 132.

[0093] The other components are the same as those in the first embodiment.

[0094] (Assembly Procedure) In the electric valve 200 of this embodiment, each component is assembled in the following procedure.

[0095] First, as shown in Figure 3, the electric valve body 201 is assembled to the main body 202 in order from the lower part. Specifically, for the first valve chamber 108A, the first valve seat 110A, the first valve body 140A, the first guide member 124A, the first coil spring 128A, the first bush 123A, the guide member 121, and the driver 122 are inserted into the first valve chamber 108A from above in this order. Similarly, for the second valve chamber 108B, the second valve seat 110B, the second valve body 140B with the O-ring 132 assembled, the second guide member 124B, the second coil spring 128B, the second bush 123B, the guide member 121, the driver 122, and the first input shaft 160A as the second output shaft 162B are inserted into the second valve chamber 108B from above in this order. By following these steps, the transmission mechanism from the first input shaft 160A to the drive mechanism 120 that drives the second valve body 140B is assembled.

[0096] Then, the intermediate member IB, the sixth gear GB6 to which the first output shaft 162A is attached, and the second input shaft 160B are assembled from above in this order, thereby assembling the transmission mechanism from the second input shaft 160B to the drive mechanism 120 that drives the first valve body 140A.

[0097] Subsequently, the lid 290, with the O-ring 196 attached to the main body 202, is fitted inside the outer wall 266, and the lid 290 is fixed to the main body 202 by retaining screws 292 via a retaining plate 294. Then, the second motor 170B is connected to the second input shaft 160B, and the first motor 170A is connected to the first input shaft 160A, thereby assembling the electric valve 200 in this embodiment.

[0098] Next, the operation and effects of the electric valve 200 and the electric valve body 201 according to this embodiment will be explained.

[0099] (Operation and Effects) In this electric valve body 201, the drive mechanism 120 that drives the second valve body 140B is directly connected to the first input shaft 160A. In this embodiment of the electric valve body 201, the second valve body 140B, driven by the drive mechanism 120 directly connected to the first input shaft 160A, has improved responsiveness during control compared to the first valve body 140A because there is no backlash in the transmission mechanism. In other words, the fluid controlled by the second valve body 140B has improved responsiveness in control compared to the fluid controlled by the first valve body 140A.

[0100] Furthermore, the electric valve body 201 has a cover 290 that is fixed to the body using retaining screws 292, thereby separating the inside from the outside of the electric valve body 201. In the electric valve body 201 according to this embodiment, the position through which the first input shaft 160A or the second input shaft 160B passes is not limited, thus improving the design flexibility compared to the case where the cover 290 is screwed into the body.

[0101] Furthermore, in the electric valve 200 of this embodiment, the same operation and effects as in the first embodiment can be obtained by having the same configuration as in the first embodiment.

[0102] Next, the electric valve 300 according to the third embodiment of this disclosure will be described with reference to Figure 5. In the description of the electric valve 300 according to this embodiment, components similar to those of the electric valve 100 according to the first embodiment or the electric valve 200 according to the second embodiment will be denoted by the same reference numerals as in the first or second embodiment, and their description may be omitted.

[0103] [Third Embodiment] (Configuration) As shown in Figure 5, in the electric valve 300 of this embodiment, the cover 390 is placed over the upper surface of the main body 302. More specifically, the cover 390 in this embodiment is a bottomed cylindrical shape having a wall portion 398 equivalent to the outer wall of the main body 302 in the first embodiment. The cover 390 is placed over the main body 302 such that the wall portion 398 is in contact with the upper surface of the main body 302.

[0104] Furthermore, as shown in Figure 5, in this embodiment, unlike the first and second embodiments, the main body 302 does not have an outer wall. In other words, in this embodiment, the main body 302 has the same vertical size as the partition wall 114.

[0105] Then, as shown in Figure 5, the cover 390 is placed over the upper surface of the main body 302 to form the reduction gear mechanism housing 368 in this embodiment. Any method can be used to fix the cover 390 to the main body 302, but as an example, similar to the second embodiment, it can be fixed using a set screw (not shown) to a female thread (not shown) formed in the main body 302. The set screw (not shown) is an example of a "fixing member" in this disclosure.

[0106] Furthermore, as shown in Figure 5, in this embodiment, an O-ring 396 is attached to the upper surface of the main body 302. With the main body 302 and the lid 390 fixed together, the O-ring 396 seals the gap between the main body 302 and the lid 390, thereby preventing fluid from leaking out of the reduction gear housing 368. Note that other components besides the O-ring 396 may be used as long as they can seal the gap between the main body 302 and the lid 390. For example, soft metal (registered trademark) may be used instead of the O-ring 396.

[0107] In this embodiment, the first reduction mechanism RA and the second reduction mechanism RB are equivalent to those in the first embodiment. Furthermore, the first input shaft 160A and the second input shaft 160B are equivalent to those in the first embodiment. Other configurations are also equivalent to those in the first embodiment.

[0108] (Assembly Procedure) In this embodiment, the electric valve 300 is assembled by following the procedure below.

[0109] First, as shown in Figure 5, the electric valve body 301 is assembled to the main body 302 in order from the lower part. Specifically, for the first valve chamber 108A, the first valve seat 110A, the first valve body 140A, the first guide member 124A, the first coil spring 128A, the first bush 123A, the guide member 121, and the driver 122 are inserted into the first valve chamber 108A from above in this order. Similarly, for the second valve chamber 108B, the second valve seat 110B, the second valve body 140B with the O-ring 132 assembled, the second guide member 124B, the second coil spring 128B, the second bush 123B, the guide member 121, and the driver 122 are inserted into the second valve chamber 108B from above in this order.

[0110] In this embodiment, the intermediate member IA and the first output shaft 162A are assembled to the fourth gear GA4, which is assembled to the main body 302 from above in this order. Similarly, the second gear GB2 is assembled to the main body 302. In this embodiment, the first input shaft 160A and the second input shaft 160B are assembled to the cover 390. However, the first input shaft 160A may be assembled to the main body 302 after the fourth gear GA4, rather than being assembled to the cover 390.

[0111] Subsequently, the cover 390 is attached to the main body 302, thereby assembling the transmission mechanism from the first gear GA1 of the first input shaft 160A to the drive mechanism 120 that drives the first valve body 140A, and the transmission mechanism from the first gear GA1 of the second input shaft 160B to the drive mechanism 120 that drives the second valve body 140B. Then, the second motor 170B is connected to the second input shaft 160B and the first motor 170A is connected to the first input shaft 160A, thereby assembling the electric valve 300 in this embodiment.

[0112] Next, the operation and effects of the electric valve 300 and the electric valve body 301 according to this embodiment will be explained.

[0113] (Operation and Effects) In the electric valve 300 of this embodiment, the same operation and effects as in the first or second embodiment can be obtained by having the same configuration as in the first or second embodiment.

[0114] Next, an electric valve 400 according to the fourth embodiment of this disclosure will be described with reference to Figure 6. In the description of the electric valve 400 according to this embodiment, components similar to those of the electric valve 100 according to the first embodiment to the electric valve 300 according to the third embodiment will be denoted by the same reference numerals as in the first to third embodiments, and their description may be omitted.

[0115] [Fourth Embodiment] (Configuration) As shown in Figure 6, in the electric valve 400 of this embodiment, the cover 490 is placed over the upper surface of the main body 402. More specifically, the cover 490 in this embodiment is a bottomed cylindrical shape having a wall portion 498 equivalent to the outer wall of the main body 402 in the second embodiment. The cover 490 is placed over the main body 402 such that the wall portion 498 is in contact with the upper surface of the main body 402.

[0116] Furthermore, as shown in Figure 6, in this embodiment, the main body 402 does not have an outer wall, similar to the third embodiment. And, similar to the third embodiment, the lid 490 is placed over the upper surface of the main body 402 to form the reduction mechanism housing 468 in this embodiment.

[0117] In this embodiment, the first reduction mechanism is equivalent to that of the second embodiment. Furthermore, the first input shaft 160A and the second input shaft 160B are equivalent to those of the second embodiment. Other configurations are also equivalent to those of the second embodiment.

[0118] (Assembly Procedure) In this embodiment, the electric valve 400 is assembled by following the procedure below.

[0119] First, as shown in Figure 6, the electric valve body 401 is assembled to the main body 402 in order from the lower part. Specifically, for the first valve chamber 108A, the first valve seat 110A, the first valve body 140A, the first guide member 124A, the first coil spring 128A, the first bush 123A, the guide member 121, and the driver 122 are inserted into the first valve chamber 108A from above in this order. Similarly, for the second valve chamber 108B, the second valve seat 110B, the second valve body 140B with the O-ring 132 assembled, the second guide member 124B, the second coil spring 128B, the second bush 123B, the guide member 121, the driver 122, and the first input shaft 160A as the second output shaft 162B are inserted into the second valve chamber 108B from above in this order. By following these steps, the transmission mechanism from the first input shaft 160A to the drive mechanism 120 that drives the second valve body 140B is assembled.

[0120] In this embodiment, the intermediate member IB and the sixth gear GB6 are assembled to the main body 402. Also in this embodiment, the second input shaft 160B is assembled to the cover 490.

[0121] Subsequently, the cover 490 is attached to the main body 402, thereby assembling the transmission mechanism from the third gear GB3 of the second input shaft 160B to the drive mechanism 120 that drives the first valve body 140A. Then, the second motor 170B is connected to the second input shaft 160B and the first motor 170A is connected to the first input shaft 160A, thereby assembling the electric valve 400 in this embodiment.

[0122] Next, the operation and effects of the electric valve 400 and electric valve body 401 according to this embodiment will be explained.

[0123] (Operation and Effects) In the electric valve 400 of this embodiment, the same operation and effects as in the first to third embodiments can be obtained by having the same configuration as in the first to third embodiments.

[0124] [Other Embodiments] In the first and third embodiments described above, the first reduction mechanism RA was composed of a first gear GA1 to a fourth gear GA4. In these embodiments, the rotational speed of the first output shaft 162A may be greater than the rotational speed of the first input shaft 160A. Similarly, in the second reduction mechanism RB, the rotational speed of the second output shaft 162B may be greater than the rotational speed of the second input shaft 160B. In other words, in this disclosure, the transmission mechanism is not limited to a reduction mechanism that decreases the rotational speed, but may also be a speed-increasing mechanism that increases the rotational speed.

[0125] Furthermore, in the above description, the electric valve 100 of the first embodiment to the electric valve 400 of the fourth embodiment were configured to have two valve chambers, a first valve chamber 108A and a second valve chamber 108B. The electric valve 100 in this disclosure is not limited to this. That is, the number of valve chambers and valve bodies may be three or more. Even in this case, by adopting the above configuration, the same operation and effects as those of the first to fourth embodiments of this disclosure can be obtained.

[0126] Furthermore, in the above description, the seal structure was composed of a second valve body 140B, a second guide member 124B, and an O-ring 132. However, the configuration in which the seal structure is provided is not limited to this. For example, the seal structure may be composed of a second output shaft 162B and a guide member 121. Also, the seal structure may be provided in the first valve chamber 108A instead of the second valve chamber 108B. In other words, in this disclosure, it is sufficient that the seal structure is provided in each of the valve chambers other than one of the multiple valve chambers.

[0127] In the above description, the electric valve 100 had a first outlet passage 106A and a second outlet passage 106B. The electric valve 100 in this disclosure is not limited to this. For example, a hole may be formed in the partition wall 114 separating the first valve chamber 108A and the second valve chamber 108B, connecting the first valve chamber 108A and the second valve chamber 108B, so that both the fluid flowing in from the first inlet passage 104A and the fluid flowing in from the second inlet passage 104B flow out from the same outlet passage. Alternatively, for example, a hole may be formed in the partition wall 114 connecting the first inlet passage 104A and the second inlet passage 104B, so that the fluid flowing in from the first inlet passage 104A flows out from either the first outlet passage 106A or the second outlet passage 106B after passing through either the first valve chamber 108A or the second valve chamber 108B. In these configurations, the above-described seal structure can be omitted in either valve chamber.

[0128] Furthermore, in the above description, a pressure reduction structure was formed by the through-hole 126 of the first guide member 124A and the through-hole 126 of the guide member 121. In the technology of this disclosure, if the movement of the first valve body 140A and the second valve body 140B is not restricted by the pressure change in these configurations, the through-hole 126 of the first guide member 124A and the through-hole 126 of the guide member 121 may be omitted.

[0129] While embodiments of this disclosure have been described above with reference to the attached drawings, it is clear that any person with ordinary skill in the art to which this disclosure belongs could conceive of various modifications or applications within the scope of the technical idea described in the claims, and these too are naturally understood to fall within the technical scope of this disclosure.

[0130] The disclosure of Japanese Patent Application No. 2025-026143, filed on 20 February 2025, is incorporated herein by reference in its entirety. All documents, patent applications, and technical standards described herein are incorporated herein by reference to the same extent as individual documents, patent applications, and technical standards are incorporated herein by reference in the same manner as they are specifically and herein indicated.

[0131] 100, 200, 300, 400 Electric valve 101, 201, 301, 401 Electric valve body 102, 202, 302, 402 Body 104A First inlet passage 104B Second inlet passage 106A First outlet passage 106B Second outlet passage 108A First valve chamber 108B Second valve chamber 110A First valve seat 110B Second valve seat 112A First valve port 112B Second valve port 114 Partition wall 120 Drive mechanism 121 Guide member 122 Driver 123A First bush 123B Second bush 124A First guide member 124B Second guide member 126 Through hole (example of pressure reduction structure) 128A First coil spring 128B Second coil spring 130 132 Through hole (example of pressure relief structure) O-ring 140A First valve body 140B Second valve body 160A First input shaft 160B Second input shaft 162A First output shaft 162B Second output shaft 164 Bearing section 166, 266 Outer wall 168, 268, 368, 468 Reduction mechanism housing section 170A First motor (example of drive section) 170B Second motor (example of drive section) 190, 290, 390, 490 Cover (example of compartment structure) 192 Male screw 194 Female screw 196 O-ring 292 Retaining screw (example of fixing member) 294 Retaining plate 398, 498 Wall section RA First reduction mechanism (example of transmission mechanism) RB Second reduction mechanism (example of transmission mechanism)

Claims

1. An electric valve body comprising: a plurality of valve bodies arranged in parallel and each driven; a body having a plurality of valve ports for each of the plurality of valve bodies to adjust the degree of opening; a plurality of drive mechanisms provided for each of the plurality of valve bodies for driving the valve body when rotational torque is input; and a transmission mechanism having a plurality of input shafts that overlap in the axial direction and have the same axis, and which transmits the input rotational torque to each of the drive mechanisms.

2. The electric valve body according to claim 1, wherein the body is formed by dividing it into a plurality of valve chambers in which the valve openings are formed, and at least one of the plurality of valve chambers is provided with a sealing structure to prevent fluid from flowing out into other valve chambers different from that valve chamber.

3. The electric valve body according to claim 2, wherein the sealing structure is provided in all but one of the plurality of valve chambers, and the pressure reducing structure that reduces pressure changes due to the operation of the drive mechanism is provided in the one valve chamber.

4. The electric valve body according to any one of claims 1 to 3, wherein a member that transmits rotational torque to the input shaft or the transmission mechanism passes through the center, and further comprises a partition structure that is screwed into the main body and separates the inside from the outside of the electric valve body.

5. The electric valve body according to any one of claims 1 to 3, wherein a member that transmits rotational torque to the input shaft or the transmission mechanism passes through it, and the electric valve body further comprises a partition structure that is fixed to the main body using a fixing member to separate the inside and outside of the electric valve body.

6. An electric valve comprising: an electric valve body according to any one of claims 1 to 5; and a drive unit that inputs rotational torque to each of the plurality of input shafts.

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