JP2020139568A - Flow passage changeover device - Google Patents

Abstract

To provide a flow passage changeover device which can change over a flow passage constitution in a fluid circuit, with simple constitution.SOLUTION: The flow passage changeover device comprises a first layer-side flow passage forming portion 10, a second layer-side flow passage forming portion 15 and a drive unit 30, and changes over a flow passage constitution of a thermal medium circuit 50 in which a thermal medium circulates. A first layer-side flow passage 11 connected to the thermal medium circuit 50 is formed in the first layer-side flow passage forming portion 10. A second layer-side flow passage 16 communicating with the first layer-side flow passage 11 at a plurality of points, and connected to the thermal medium circuit 50 is formed in the second layer-side flow passage forming portion 15. The drive unit 30 drives a plurality of valve element portions 73 at least in conjunction with each other. The plurality of valve element portions 73 are arranged in the second layer-side flow passage 16, and adjust a flow rate of a thermal medium passing a communication path which makes the first layer-side flow passage 11 and the second layer-side flow passage 16 communicate with each other. In the flow passage changeover device 1, the first layer-side flow passage forming portion 10, the second layer-side flow passage forming portion 15 and the drive unit 30 are arranged in a laminated manner in this order.SELECTED DRAWING: Figure 2

Description

The present invention relates to a flow path switching device for switching a flow path configuration in a fluid circuit.

Conventionally, in a fluid circuit, a plurality of switching valves are arranged in order to realize a flow path configuration according to the application. For example, in the water supply pump device described in Patent Document 1, the first switching valve to the fifth switching valve are adopted for switching the flow path configuration.

In Patent Document 1, the flow path configuration is switched to five patterns by controlling the operation of the first switching valve to the fifth switching valve.

Japanese Unexamined Patent Publication No. 2014-37716

Here, in Patent Document 1, the first switching valve to the fifth switching valve are connected via a large number of pipes and joints, respectively. For this reason, the configuration for switching the flow path becomes large, which affects the space and weight of the entire device.

Further, in Patent Document 1, a drive unit related to a switching operation is required for each of the first switching valve to the fifth switching valve. Therefore, considering the drive unit of each switching valve, it is considered that there is room for further improvement in the space and weight of the configuration for switching the flow path in Patent Document 1.

The present invention has been made in view of these points, and an object of the present invention is to provide a flow path switching device capable of switching a flow path configuration in a fluid circuit with a compact configuration.

In order to achieve the above object, the flow path switching device according to one aspect of the present disclosure includes a first layer side flow path forming unit (10), a second layer side flow path forming unit (15), and a driving unit (30). ), And switches the flow path configuration of the fluid circuit (50) through which the fluid circulates.

The first layer side flow path (11) connected to the fluid circuit is formed in the first layer side flow path forming portion. The second layer side flow path forming portion is formed with a second layer side flow path (16) that communicates with the first layer side flow path at a plurality of locations and is connected to the fluid circuit.

The drive unit 30 drives a plurality of valve body units (73) at least in conjunction with each other. The plurality of valve body portions are arranged inside the second layer side flow path, and the fluid passing through the communication passages (75a, 75b) communicating the first layer side flow path and the second layer side flow path. Adjust the flow rate. In the flow path switching device, the first layer side flow path forming portion, the second layer side flow path forming portion, and the driving portion are laminated in this order.

According to this, since the first layer side flow path forming part, the second layer side flow path forming part, and the driving part are arranged in a laminated manner, the functions of the piping, the joint, and the valve for switching the flow path configuration of the fluid circuit. Can be aggregated, and a more compact configuration can be realized.

Further, since the first layer side flow path forming portion, the second layer side flow path forming portion, and the driving portion are arranged in a laminated manner, a plurality of valve body portions are arranged at positions close to each other. Then, the drive unit drives the plurality of valve body units at least in conjunction with each other. Therefore, according to the flow path switching device, it is possible to switch the flow path configuration of the fluid circuit with a compact and lightweight configuration as compared with the case where a drive source such as a motor is arranged for each valve body. it can.

The reference numerals in parentheses of each means described in this column and the scope of claims indicate the correspondence with the specific means described in the embodiments described later.

It is a schematic block diagram of the flow path switching device which concerns on 1st Embodiment. It is a side view of the flow path switching device which concerns on 1st Embodiment. It is an overall block diagram of the heat medium circuit which concerns on 1st Embodiment. It is explanatory drawing which shows the structure of the 1st layer side flow path which concerns on 1st Embodiment. It is explanatory drawing which shows the structure of the 2nd layer side flow path which concerns on 1st Embodiment. It is explanatory drawing of the 2nd layer side lid member and the fixed lid which concerns on 1st Embodiment. It is sectional drawing of the VII-VII cross section in FIGS. 4 and 5. It is explanatory drawing about the flow path resistance part in the flow path switching apparatus of 1st Embodiment. It is sectional drawing of the IX-IX cross section in FIGS. 4 and 5. It is a schematic diagram which shows the schematic structure of the heat medium three-way valve in a flow path switching device. It is explanatory drawing which shows the valve body part of the heat medium three-way valve in the fully open state. It is explanatory drawing which shows the valve body part of the heat medium three-way valve in the fully closed state. It is explanatory drawing which shows the valve body part of the heat medium three-way valve in the flow rate distribution state. It is a graph which shows the relationship between the 1st opening degree and the 2nd opening degree in a heat medium three-way valve. It is explanatory drawing which shows the structure of the heat insulation part in the flow path switching device. It is a schematic block diagram of the flow path switching device which concerns on 2nd Embodiment. It is an overall block diagram of the heat medium circuit which concerns on 2nd Embodiment. It is explanatory drawing which shows the structure of the 1st layer side flow path of the flow path switching device which concerns on 2nd Embodiment. It is explanatory drawing which shows the structure of the 2nd layer side flow path of the flow path switching device which concerns on 2nd Embodiment. It is sectional drawing about the flow path resistance part in the flow path switching apparatus which concerns on 3rd Embodiment. It is sectional drawing of the XXI-XXI cross section in FIG.

A plurality of embodiments for carrying out the present invention will be described below with reference to the drawings. In each embodiment, the same reference numerals may be given to the parts corresponding to the matters described in the preceding embodiments, and duplicate description may be omitted. When only a part of the configuration is described in each embodiment, the other embodiments described above can be applied to the other parts of the configuration. Not only the combination of the parts that clearly indicate that the combination is possible in each embodiment, but also the partial combination of the embodiments even if the combination is not specified if there is no particular problem in the combination. Is also possible.

(First Embodiment)
First, the schematic configuration of the flow path switching device 1 according to the first embodiment will be described with reference to the drawings. As shown in FIG. 1, the flow path switching device 1 according to the first embodiment constitutes a part of the heat medium circuit 50 as a fluid circuit, and as will be described later, the flow path configuration in the heat medium circuit 50. To switch.

The heat medium circuit 50 according to the first embodiment is mounted on an electric vehicle that obtains a driving force for traveling from a motor generator. The heat medium circuit 50 is used in an electric vehicle to air-condition the interior of a vehicle which is an air-conditioning target space and to adjust the temperature of an in-vehicle device (for example, a heat generating device 54) which is a temperature adjustment target. That is, the heat medium circuit 50 according to the first embodiment constitutes a part of a vehicle air conditioner having a temperature control function of an in-vehicle device in an electric vehicle.

In the heat medium circuit 50 of the first embodiment, the heat generating device 54 that generates heat during operation is targeted for temperature adjustment. The heat generating device 54 includes a plurality of constituent devices. Specific examples of the constituent devices of the heat generating device 54 include a motor generator, a power control unit (so-called PCU), a control device for an advanced driver assistance system (so-called ADAS), and the like.

The motor generator outputs driving force for traveling by being supplied with electric power, and generates regenerative electric power when the vehicle is decelerating or the like. The PCU integrates a transformer, a frequency converter, and the like in order to appropriately control the electric power supplied to each in-vehicle device.

As shown in FIG. 1, the constituent devices of the heat medium circuit 50 are connected to the flow path switching device 1 according to the first embodiment. Specifically, the flow path switching device 1 is provided with a heater core 51, a water-refrigerant heat exchanger 52, a heating device 53, a heating device 54, a radiator 55, a first water pump 56a, and a second via a heat medium pipe. A water pump 56b is connected.

Then, as shown in FIG. 2, the flow path switching device 1 has a first layer side lid member 20, a main body member 5, a second layer side lid member 25, and a drive unit 30. In the flow path switching device 1, the first layer side lid member 20, the main body member 5, the second layer side lid member 25, and the drive unit 30 are stacked in this order according to the stacking direction L.

As shown in FIGS. 1 and 2, in the flow path switching device 1 according to the first embodiment, the main body member 5 is formed of a synthetic resin into a block shape forming a rectangular parallelepiped. Then, on one surface (upper surface in FIG. 2) side of the main body member 5, a groove-shaped first layer side flow path 11 having one surface open is formed.

In the first layer side flow path 11, as shown in FIGS. 2, 7, and the like, the heat medium of the heat medium circuit 50 flows by joining the first layer side lid member 20 to one surface of the main body member 5. Functions as a pipeline. Therefore, the portion of the main body member 5 that constitutes one surface side constitutes the first layer side flow path forming portion 10.

A groove-shaped second layer side flow path 16 having an open other surface side is formed on the other surface (lower surface in FIG. 2) side located on the back side of one surface of the main body member 5. In the second layer side flow path 16, as shown in FIGS. 2 and 7, the heat medium of the heat medium circuit 50 is formed by joining the second layer side lid member 25 and the like to the other surface of the main body member 5. It functions as a circulating heat medium passage. Therefore, the portion of the main body member 5 that constitutes the other surface side constitutes the second layer side flow path forming portion 15.

Further, a plurality of valve body portions 73 are arranged inside the second layer side flow path 16. In the first embodiment, the valve body portion 73 of the first heat medium three-way valve 70a and the second heat medium three-way valve 70b, which will be described later, is arranged inside the second layer side flow path 16. Each valve body portion 73 switches the flow of the heat medium in the first layer side flow path 11 and the second layer side flow path 16, and changes the flow path configuration of the heat medium circuit 50.

The main body member 5 is formed with communication portions formed so as to penetrate one side and the other side at a plurality of predetermined locations. This communication portion connects between the first layer side flow path 11 and the second layer side flow path 16 so that the heat medium can flow, and includes the first communication part 40a, the second communication part 40b, and the like, which will be described later. I'm out.

As shown in FIG. 2, a plurality of connection ports to which the heat medium piping of the heat medium circuit 50 is connected are formed on the side surface of the main body member 5. The flow path switching device 1 according to the first embodiment has first connection ports 35a to tenth connection ports 35j, and the constituent devices of the heat medium circuit 50 are connected via the heat medium piping.

As shown in FIG. 2, the first layer side lid member 20 is a plate-shaped member made of synthetic resin, and is formed to have the same size as one surface side of the main body member 5. The first layer side lid member 20 is joined to one surface of the main body member 5 (upper surface of the main body member 5 in FIG. 2) by vibration welding, laser welding, or the like and sealed. As a result, the open portion of the groove-shaped first layer side flow path 11 is closed by the first layer side lid member 20, so that the first layer side flow path 11 functions as a conduit through which the heat medium flows.

The second layer side lid member 25 is a plate-shaped member made of synthetic resin, like the first layer side lid member 20. The second layer side lid member 25 is joined and sealed to the other surface of the main body member 5 (lower surface of the main body member 5 in FIG. 2) by vibration welding, laser welding, or the like. As a result, the open portion of the groove-shaped second layer side flow path 16 is closed by the second layer side lid member 25, so that the second layer side flow path 16 functions as a conduit through which the heat medium flows.

Further, as shown in FIG. 2 and the like, the drive unit 30 is arranged on the other surface side of the block-shaped main body member 5 via the second layer side lid member 25. The drive unit 30 includes an electromagnetic motor 32, a transmission mechanism 33, and a drive control unit 34 inside the casing 31. The casing 31 plays a role of protecting the electromagnetic motor 32, the transmission mechanism 33, and the drive control unit 34 from dust and water.

The electromagnetic motor 32 has a drive shaft 32a driven by electric power supply, and functions as a drive source for each valve body portion 73. Inside the casing 31 of the drive unit 30, the electromagnetic motor 32 is attached to the second layer side lid member 25 so as to be in a predetermined position.

The transmission mechanism 33 is a link mechanism including a gear 33a, and is configured to be able to transmit the driving force generated by the electromagnetic motor 32 to each valve body portion 73. The gear 33a is arranged at the end of the rotating shaft 74a of the valve body portion 73. Therefore, the driving force of the electromagnetic motor 32 is transmitted to the gear 33a to rotate the valve body portion 73, so that the valve body portion 73 can be rotated around the rotation shaft 74a.

Further, since the transmission mechanism 33 is composed of a link mechanism, the mode of transmitting the driving force to each valve body portion 73 can be appropriately switched. For example, the transmission mechanism 33 can transmit the driving force so as to operate the two valve body portions 73 in conjunction with each other. Further, the transmission mechanism 33 can also transmit the driving force to one of the two valve body portions 73.

Then, each component of the transmission mechanism 33 is attached to the second layer side lid member 25 so as to be at a predetermined position inside the casing 31 of the drive unit 30.

The drive control unit 34 is an electronic control unit for controlling the operation of the flow path switching device 1. Specifically, the drive control unit 34 has a microcontroller and controls the operation of the electromagnetic motor 32 and the transmission mechanism 33 according to a control signal from a control device (not shown).

Next, the configurations of the first layer side flow path 11 and the second layer side flow path 16 in the first embodiment will be described with reference to FIGS. 3 to 5. As described above, the heat medium circuit 50 is a heat medium circulation circuit that circulates cooling water as a heat medium. In the first embodiment, the flow path configuration of the heat medium circuit 50 is switched as described later in order to air-condition the vehicle interior and cool the in-vehicle device. An ethylene glycol aqueous solution, which is an incompressible fluid, is used as the heat medium that circulates in the heat medium circuit 50.

As shown in FIG. 1 and the like, the suction port of the first water pump 56a is connected to the first connection port 35a via a heat medium pipe. Here, as shown in FIG. 4, the first connection port 35a constitutes one end of the first layer side flow path 11.

The first water pump 56a is an electric pump whose rotation speed (that is, pumping capacity) is controlled by a control voltage output from a control device (not shown). The discharge port of the first water pump 56a is connected to the heat medium inlet of the heat medium passage 52b in the water-refrigerant heat exchanger 52 via a heat medium pipe. Therefore, the first water pump 56a pumps the heat medium toward the heat medium passage 52b of the water-refrigerant heat exchanger 52.

The water-refrigerant heat exchanger 52 is a component of the heat medium circuit 50 and at the same time one of the components of the refrigeration cycle 90. The water-refrigerant heat exchanger 52 has a refrigerant passage 52a for circulating the refrigerant in the refrigeration cycle 90 and a heat medium passage 52b for circulating the heat medium of the heat medium circuit 50.

The water-refrigerant heat exchanger 52 is made of the same type of metal (aluminum alloy in the first embodiment) having excellent heat transfer properties, and each component is integrated by brazing. As a result, the refrigerant flowing through the refrigerant passage 52a and the heat medium flowing through the heat medium passage 52b can exchange heat with each other.

The water-refrigerant heat exchanger 52 may function as a radiator (so-called water-cooled condenser) or as a heat absorber (so-called chiller) by changing the cycle configuration of the refrigeration cycle 90. Can be switched.

For example, when the cycle configuration of the refrigeration cycle 90 is switched and the high-pressure refrigerant of the refrigeration cycle 90 flows through the refrigerant passage 52a, it functions as a radiator that dissipates the heat of the high-pressure refrigerant to the heat medium of the heat medium passage 52b. In this case, the water-refrigerant heat exchanger 52 can heat the heat medium with the heat of the high-pressure refrigerant.

On the other hand, when the cycle configuration is switched so that the low-pressure refrigerant in the refrigeration cycle 90 flows through the refrigerant passage 52a, it functions as an endothermic device that absorbs the heat of the heat medium flowing through the heat medium passage 52b into the low-pressure refrigerant. In this case, the water-refrigerant heat exchanger 52 can cool the heat medium using the low-pressure refrigerant as a cooling heat source.

A second connection port 35b is connected to the heat medium outlet side of the water-refrigerant heat exchanger 52 via a heat medium pipe. As shown in FIG. 4, the second connection port 35b constitutes one end of the first layer side flow path 11.

A heating device 53 is connected to a third connection port 35c that forms one end of the first layer side flow path 11. The heating device 53 has a heating passage and a heat generating portion, and heats a heat medium flowing into the heater core 51 by electric power supplied from a control device (not shown). The amount of heat generated by the heating device 53 can be arbitrarily adjusted by controlling the electric power from the control device.

The heating passage of the heating device 53 is a passage through which a heat medium is circulated. The heat generating section heats the heat medium flowing through the heating passage by being supplied with electric power. Specifically, a PTC element or a nichrome wire can be adopted as the heat generating portion.

The heat medium inlet side of the heater core 51 is connected to the outlet side of the heating passage in the heating device 53 via a heat medium pipe. The heater core 51 is a heat exchanger that exchanges heat between the blown air blown from an indoor blower (not shown) and a heat medium.

The heater core 51 can heat the blown air using the heat of the heat medium heated by the water-refrigerant heat exchanger 52, the heating device 53, or the like as a heat source. The heater core 51 is arranged in the casing of the indoor air-conditioning unit mounted on the electric vehicle on the downstream side of the indoor evaporator constituting the refrigeration cycle 90. A fourth connection port 35d is connected to the heat medium outlet side of the heater core 51 via a heat medium pipe. The fourth connection port 35d constitutes one end of the second layer side flow path 16.

As shown in FIG. 4, the fifth connection port 35e constitutes one end of the first layer side flow path 11. The heat medium passage 54a of the heat generating device 54 is connected to the fifth connection port 35e via a heat medium pipe. The heat medium passage 54a of the heat generating device 54 is formed in the housing portion or the inside of the case forming the outer shell of the heat generating device 54.

The heat medium passage 54a of the heat generating device 54 is a heat medium passage for adjusting the temperature of the heat generating device 54 by circulating the heat medium. In other words, the heat medium passage 54a of the heat generating device 54 functions as a temperature adjusting unit that adjusts the temperature of the heat generating device 54 by exchanging heat with the heat medium circulating in the heat medium circuit 50.

A sixth connection port 35f is connected to the other end side of the heat medium passage 54a in the heat generating device 54 via a heat medium pipe. The sixth connection port 35f constitutes one end of the first layer side flow path 11.

As shown in FIG. 4, the seventh connection port 35g constitutes one end of the first layer side flow path 11. The suction port of the second water pump 56b is connected to the seventh connection port 35g via a heat medium pipe. The second water pump 56b is an electric pump that pumps a heat medium in order to circulate the heat medium circuit 50. The basic configuration of the second water pump 56b is the same as that of the first water pump 56a. The eighth connection port 35h is connected to the discharge port side of the second water pump 56b via a heat medium pipe. The eighth connection port 35h constitutes one end of the first layer side flow path 11.

Then, one side of the heat medium inflow port of the radiator 55 is connected to the ninth connection port 35i via a heat medium pipe. The ninth connection port 35i is one end of the second layer side flow path 16. The radiator 55 is a heat exchanger that exchanges heat between the heat medium circulating inside and the outside air. Therefore, the radiator 55 dissipates the heat of the heat medium passing through the inside to the outside air.

The radiator 55 is arranged on the front side in the drive unit room. Therefore, the radiator 55 can be integrally configured with the outdoor heat exchanger. The tenth connection port 35j is connected to the other side of the heat medium inflow port of the radiator 55 via a heat medium pipe. The tenth connection port 35j constitutes one end of the first layer side flow path 11.

As shown in FIGS. 3 and 4, the first layer side flow path 11 extending from the second connection port 35b is the first layer side flow path 11 extending from the third connection port 35c and the first heat medium check valve 60a. It is connected to the first layer side flow path 11 extending from the outlet to form the first connection portion 80a.

Then, as shown in FIGS. 3 and 5, the inflow port side of the first heat medium three-way valve 70a is connected to the second layer side flow path 16 extending from the fourth connection port 35d. The first heat medium three-way valve 70a can adjust the flow rate ratio between the flow rate of the heat medium flowing out from one side of the outlet and the flow rate of the heat medium flowing out from the other side of the outlet among the heat media flowing out from the heater core 51. There are three types of flow control valves. The operation of the first heat medium three-way valve 70a is controlled by controlling the drive unit 30 by a control device (not shown).

Further, the first heat medium three-way valve 70a can allow the total flow rate of the heat medium flowing out from the heater core 51 to flow out to either one of the two outlets. As a result, the first heat medium three-way valve 70a can switch the flow path configuration of the heat medium circuit 50.

The heat medium flowing in from the inflow port of the first heat medium three-way valve 70a passes through the communication passage in the process of going through the inside of the first heat medium three-way valve 70a toward the outflow port, and passes from the second layer side flow path 16 to the first. It flows out to the layer side flow path 11.

The first layer side flow path 11 extending from one side of the outlet of the first heat medium three-way valve 70a is connected to the other three first layer side flow paths 11 to form the second connection portion 80b. As shown in FIG. 3, the second connection portion 80b is a first layer side flow path 11 on one side of the outlet of the first heat medium three-way valve 70a, and a first on the inflow side of the first heat medium check valve 60a. It is composed of a first layer side flow path 11, a first layer side flow path 11 on the outlet side of the third heat medium check valve 60c, and a first layer side flow path 11 on the first connection port 35a side.

As shown in FIGS. 3 and 4, the first heat medium check valve 60a allows the heat medium to flow from the second connection portion 80b side to the first connection portion 80a side, and from the first connection portion 80a side. It is prohibited to flow to the second connection portion 80b side.

The first layer side flow path 11 extending from the other side of the outlet of the first heat medium three-way valve 70a is formed with the first layer side flow path 11 extending from the fifth connection port 35e and the first communication portion 40a. It is connected to the first layer side flow path 11 and constitutes the fourth connection portion 80d.

Here, the first communication portion 40a is formed so as to penetrate the block-shaped main body member 5 in the stacking direction L, and communicates the first layer side flow path 11 and the second layer side flow path 16. There is. Therefore, the heat medium flows between the first layer side flow path 11 and the second layer side flow path 16 via the first communication portion 40a.

As shown in FIGS. 3 and 5, the heat medium that has passed through the first communication portion 40a reaches the inflow port of the second heat medium three-way valve 70b via the second layer side flow path 16. The second heat medium three-way valve 70b is a flow rate ratio of the flow rate of the heat medium flowing out from one side of the outlet and the flow rate of the heat medium flowing out from the other side of the outlet among the heat media flowing in from the fourth connection portion 80d. It is a three-type flow rate control valve that can adjust. The basic configuration of the second heat medium three-way valve 70b is the same as that of the first heat medium three-way valve 70a.

The heat medium flowing in from the inflow port of the second heat medium three-way valve 70b passes through the communication passage in the process of going through the inside of the second heat medium three-way valve 70b toward the outflow port, and passes from the second layer side flow path 16 to the first. It flows out to the layer side flow path 11.

A second communication portion 40b is formed at the end of the first layer side flow path 11 extending from one side of the outlet of the second heat medium three-way valve 70b. Therefore, the heat medium flowing out from one of the outlets of the second heat medium three-way valve 70b flows out from the first layer side flow path 11 to the second layer side flow path 16 via the second communication portion 40b. As shown in FIG. 5, a ninth connection port 35i is formed in the second layer side flow path 16 extending from the second communication portion 40b.

The first layer side flow path 11 extending from the other side of the outlet of the second heat medium three-way valve 70b is a first layer extending from the first layer side flow path 11 extending from the seventh connection port 35g and the tenth connection port 35j. It is connected to the layer side flow path 11 and constitutes the third connection portion 80c.

As shown in FIGS. 3 and 4, the inflow port side of the second heat medium check valve 60b is connected to the first layer side flow path 11 extending from the eighth connection port 35h. The first layer side flow path 11 extending from the sixth connection port 35f is the inflow port of the first layer side flow path 11 and the third heat medium check valve 60c extending from the outlet of the second heat medium check valve 60b. It is connected to the first layer side flow path 11 extending from, and constitutes the fifth connection portion 80e.

Then, the second heat medium check valve 60b allows the heat medium to flow from the eighth connection port 35h side to the fifth connection portion 80e, and flows from the fifth connection portion 80e side to the eighth connection port 35h side. Is prohibited. Further, the third heat medium check valve 60c allows the heat medium to flow from the fifth connection portion 80e side to the second connection portion 80b side, and flows from the second connection portion 80b side to the fifth connection portion 80e side. Prohibit that.

Specific configurations of the first heat medium three-way valve 70a, the second heat medium three-way valve 70b, the first heat medium check valve 60a, the second heat medium check valve 60b, and the third heat medium check valve 60c. Will be described later with reference to the drawings.

According to the flow path switching device 1 according to the first embodiment, the flow path configuration of the heat medium circuit 50 is configured in various modes by controlling the operation of the first heat medium three-way valve 70a and the second heat medium three-way valve 70b. Can be switched to.

For example, the flow path switching device 1 has a flow path configuration of the heat medium circuit 50, that is, the first water pump 56a → the water-refrigerant heat exchanger 52 → the heating device 53 → the heater core 51 → the first heat medium three-way valve 70a → the heating device. The heat medium is circulated in the order of 54 → the third heat medium check valve 60c → the first water pump 56a.

According to the heat medium circuit 50 having this flow path configuration, the heat medium heated by the waste heat of the heat generating device 54 can flow into the heater core 51, so that the vehicle interior can be heated by using the waste heat of the heat generating device 54. It can be realized.

Further, the flow path switching device 1 has a flow path configuration of the heat medium circuit 50, that is, the first water pump 56a → the water-refrigerant heat exchanger 52 → the heating device 53 → the heater core 51 → the first heat medium three-way valve 70a → the heating device. The heat medium is circulated in the order of 54 → the third heat medium check valve 60c → the first water pump 56a. At the same time, the second water pump 56b → the second heat medium check valve 60b → the third heat medium check valve 60c → the first water pump 56a → the water-refrigerant heat exchanger 52 → the heating device 53 → the heater core 51 → the first heat. The heat medium is circulated in the order of the medium three-way valve 70a → the second heat medium three-way valve 70b → the radiator 55 → the second water pump 56b.

As a result, the circulation path of the heat medium via the heater core 51 and the circulation path of the heat medium via the radiator 55 can be configured in parallel with respect to the flow of the heat medium via the heat generating device 54. Therefore, according to the heat medium circuit 50 having this flow path configuration, it is possible to dissipate excess heat to the outside air while heating the vehicle interior using the waste heat of the heat generating device 54.

Further, the flow path switching device 1 has a flow path configuration of the heat medium circuit 50, that is, the first water pump 56a → the water-refrigerant heat exchanger 52 → the heating device 53 → the heater core 51 → the first heat medium three-way valve 70a → the first. The heat medium is circulated in the order of the water pump 56a. At the same time, the heat medium is circulated in the order of the second water pump 56b → the second heat medium check valve 60b → the heat generating device 54 → the second heat medium three-way valve 70b → the radiator 55 → the second water pump 56b.

According to the heat medium circuit 50 having this configuration, the circulation path of the heat medium via the water-refrigerant heat exchanger 52 and the heater core 51 and the circulation path of the heat medium circulating through the heat generating device 54 and the radiator 55 are independently formed. can do. As a result, the heat medium circuit 50 can cool the heat generating device 54 by heat dissipation from the outside air while heating the vehicle interior by the refrigeration cycle 90.

Next, the second layer side lid member 25 and the like in the flow path switching device 1 will be described with reference to the drawings. As described above, the second layer side lid member 25 is attached to the other surface side of the main body member 5. As shown in FIG. 6, the second layer side lid member 25 includes the second layer side flow path 16 including the first heat medium three-way valve 70a and the second heat medium three-way valve among the second layer side flow paths 16. It is attached so as to seal the second layer side flow path 16 including 70b.

A fixed lid 28 is attached to the other surface side of the main body member. The fixing lid 28 is attached so as to seal the second layer side flow path 16 connected to the ninth connection port 35i among the second layer side flow paths 16.

Since the second layer side lid member 25 and the fixed lid 28 are attached to the other surface side of the main body member 5, the fixed lid 28 is joined when the flow path leakage inspection in the flow path switching device 1 is performed. It is also possible to remove the second layer side lid member 25 while keeping it. As a result, the workload of leak inspection can be reduced.

As shown in FIG. 6, the second layer side lid member 25 is formed with a plurality of through holes 26 so as to penetrate the second layer side lid member 25 in the thickness direction. The plurality of through holes 26 are formed so as to line up in the stacking direction L with respect to the first heat medium three-way valve 70a and the second heat medium three-way valve 70b in the second layer side flow path 16.

Each through hole 26 is penetrated by the rotation shaft 74a of the valve body portion 73 in the first heat medium three-way valve 70a and the second heat medium three-way valve 70b. As a result, the ends of the rotating shafts 74a of the first heat medium three-way valve 70a and the second heat medium three-way valve 70b reach the inside of the drive unit 30, so that the electromagnetic motor 32 is used for each valve body portion 73. The generated driving force can be transmitted.

Then, as shown in FIG. 6, a plurality of positioning pins 27 are formed on the second layer side lid member 25. Each positioning pin 27 is formed so as to project toward the other surface of the main body member 5.

On the other hand, a plurality of positioning recesses 17 are formed on the other surface of the main body member 5. Each positioning recess 17 is formed by recessing the other surface of the main body member 5 in the stacking direction L, and is arranged corresponding to the position of the positioning pin 27 on the second layer side lid member 25.

When the second layer side lid member 25 is attached to the other surface of the main body member 5, each positioning pin 27 fits into the positioning recess 17. By fitting the positioning recess 17 and the positioning pin 27, the second layer side lid member 25 is positioned at a predetermined position on the other surface of the main body member 5. That is, the positioning recess 17 and the positioning pin 27 function as positioning portions.

Here, a plurality of through holes 26 are formed in the second layer side lid member 25 as described above, and are penetrated by the rotation shaft 74a of the valve body portion 73. Therefore, if the position of the second layer side lid member 25 with respect to the other surface of the main body member 5 is displaced, it is considered that the rotating shaft 74a interferes with the through hole 26 and hinders the operation of the valve body portion 73. Be done.

In this respect, the cooperation between the positioning recess 17 and the positioning pin 27 allows the main body member 5 and the second layer side lid member 25 to be joined in an appropriate positional relationship, so that the through hole 26 interferes with the rotation shaft 74a. However, the smooth operation of the valve body portion 73 can be ensured.

Subsequently, the configuration and mounting of the first heat medium check valve 60a and the like in the flow path switching device 1 will be described with reference to FIGS. 7 and 8. As described above, in the flow path switching device 1 according to the first embodiment, the first heat medium check valve 60a, the second heat medium check valve 60b, and the third heat medium check valve 60c are attached. In the following description, unless it is particularly necessary, the first heat medium check valve 60a to the third heat medium check valve 60c may be collectively referred to as a heat medium check valve 60.

As shown in FIG. 3, the first heat medium check valve 60a, the second heat medium check valve 60b, and the third heat medium check valve 60c connect the second connection port 35b to the eighth connection port 35h. It is arranged in the first layer side flow path 11 extending linearly.

That is, the first heat medium check valve 60a, the second heat medium check valve 60b, and the third heat medium check valve 60c are a plurality of flow paths formed in the same linear first layer side flow path 11. Each of them is attached to a predetermined position by using the resistance portion 12. Therefore, the flow path resistance portion 12 holds functional parts such as the first heat medium check valve 60a in the first layer side flow path 11.

Here, the configuration of the heat medium check valve 60 including the first heat medium check valve 60a and the like will be described with reference to FIG. 7. As shown in FIGS. 7 and 8, the heat medium check valve 60 is configured by accommodating the spherical valve body 62 inside the cylindrical valve body case 61. The inside of the cylindrical valve body case 61 constitutes a conduit through which the heat medium passes.

A flow path hole 61a is formed on the heat medium inlet side of the valve body case 61. As shown in FIG. 6, the flow path hole 61a is formed to have a diameter smaller than the inner diameter of the heat medium outlet of the valve body case 61 and the outer diameter of the spherical valve body 62. The flow path hole 61a constitutes a valve seat on which the spherical valve body 62 is seated when the heat medium flows in from the heat medium outlet side.

A regulation pin 63 is arranged on the heat medium outlet side of the valve body case 61. The regulation pin 63 is formed in a rod shape and is arranged so as to intersect the heat medium flow direction in the valve body case 61. The regulation pin 63 abuts on the spherical valve body 62 to regulate the movement range of the spherical valve body 62 inside the valve body case 61.

The heat medium check valve 60 such as the first heat medium check valve 60a configured in this way is inside the first layer side flow path 11 by the flow path resistance portion 12 formed in the first layer side flow path 11. Attached to. As shown in FIGS. 7 and 8, the flow path resistance portion 12 is formed in a wall shape so as to cross the groove-shaped first layer side flow path 11, and has a holding hole 12a. There is.

The holding hole 12a is formed so as to penetrate the flow path resistance portion 12 in the thickness direction. That is, the flow path resistance portion 12 is changed so as to reduce the flow path cross section of the first layer side flow path 11, thereby increasing the flow path resistance of the heat medium flowing through the first layer side flow path 11. ing.

The inner diameter of the holding hole 12a is formed to be slightly larger than the outer diameter of the valve body case 61. Therefore, as shown in FIG. 8, the heat medium check valve 60 is attached to the holding hole 12a of the flow path resistance portion 12 by moving it along the extending direction of the first layer side flow path 11. Therefore, the flow path resistance portion 12 holds the heat medium check valve 60 as a functional component.

As shown in FIG. 7, a seal member 64 is arranged between the outer peripheral surface of the valve body case 61 and the inner wall surface of the holding hole 12a. The seal member 64 is formed of a so-called O-ring to prevent leakage of heat medium between the outer peripheral surface of the valve body case 61 and the inner wall surface of the holding hole 12a.

By attaching the heat medium check valve 60 configured in this way to the flow path resistance portion 12, it functions as a first heat medium check valve 60a to a third heat medium check valve 60c in the flow path switching device 1. I'm letting you.

According to the example shown in FIG. 7, when the heat medium flows from the eighth connection port 35h side to the second connection port 35b side, a spherical valve body is inside the valve body case 61 of each heat medium check valve 60. 62 moves to the heat medium outlet side according to the flow of the heat medium.

As a result, the flow path hole 61a in the heat medium check valve 60 is opened, and the flow of the heat medium from the eighth connection port 35h side to the second connection port 35b side is allowed. At this time, since the spherical valve body 62 comes into contact with the regulation pin 63 and the movement to the heat medium outlet side is restricted, the spherical valve body 62 does not flow out from the valve body case 61 to the outside.

On the other hand, when the heat medium flows from the second connection port 35b side toward the eighth connection port 35h side, the spherical valve body 62 follows the flow of the heat medium inside the valve body case 61 in each heat medium check valve 60. , Moves to the heat medium inlet side and sits on the flow path hole 61a. As a result, the flow path hole 61a of the heat medium check valve 60 is closed by the spherical valve body 62, and the flow of the heat medium from the second connection port 35b side to the eighth connection port 35h side is prohibited.

As shown in FIG. 8, a joint surface 12b is formed on the flow path resistance portion 12. The joint surface 12b of the flow path resistance portion 12 is configured by connecting the surfaces on one surface side of the main body member 5 so as to cross the first layer side flow path 11. Then, as shown in FIG. 7, when the first layer side lid member 20 is attached to one surface side of the main body member 5, the joint surface 12b comes into contact with the surface of the first layer side lid member 20.

Therefore, according to the flow path switching device 1, when the first layer side lid member 20 is joined to the main body member 5 by laser welding or the like, it can be joined via the joining surface 12b of the flow path resistance portion 12. As a result, in the flow path switching device 1, the joint strength of the first layer side lid member 20 with respect to the main body member 5 can be improved by using the plurality of joint surfaces 12b.

Further, since the joint surface 12b is formed by connecting the surfaces on one surface side of the main body member 5, when laser welding or the like is adopted, the setting change such as the focal length can be minimized and is continuous. Can perform various joining operations.

Next, the configuration of the first heat medium three-way valve 70a and the like in the flow path switching device 1 will be described with reference to the drawings. As described above, in the flow path switching device 1 according to the first embodiment, the first heat medium three-way valve 70a and the second heat medium three-way valve 70b are attached.

In the following description, if it is not particularly necessary, the first heat medium three-way valve 70a and the second heat medium three-way valve 70b may be collectively referred to as a heat medium three-way valve 70. Further, the figure shown in FIG. 9 is an explanatory view for showing the basic configuration of the heat medium three-way valve 70, and is different from the specific configuration of the first heat medium three-way valve 70a and the second heat medium three-way valve 70b. are doing.

As shown in FIG. 10, the heat medium three-way valve 70 has a heat medium flow rate flowing out from the first heat medium outlet 76 and a second heat medium outlet 77 among the heat media flowing in from the heat medium inflow port 72. It is a three-type flow rate adjusting valve that can adjust the flow rate ratio with the flow rate of the heat medium to be discharged.

In the first heat medium three-way valve 70a, the second layer side flow path 16 extending from the fourth connection port 35d corresponds to the heat medium inflow port 72. The first layer side flow path 11 extending to the second connection portion 80b and the first layer side flow path 11 extending to the fourth connection portion 80d correspond to the first heat medium outlet 76 and the second heat medium outlet 77. are doing.

In the case of the second heat medium three-way valve 70b, the second layer side flow path 16 extending from the first communication portion 40a corresponds to the heat medium inflow port 72. The first layer side flow path 11 extending to the second communication portion 40b and the first layer side flow path 11 extending to the third connection portion 80c correspond to the first heat medium outlet 76 and the second heat medium outlet 77. are doing.

As shown in FIGS. 9 and 10, the heat medium three-way valve 70 is formed in a tubular shape extending in the stacking direction L. Therefore, in the first heat medium three-way valve 70a and the second heat medium three-way valve 70b, a communication passage connecting the second layer side flow path 16 and the first layer side flow path 11 in the stacking direction L is provided in the main body 71. Equivalent to.

A valve body portion 73 is arranged inside the main body portion 71. The valve body 73 is composed of a drive disk 74 and a fixed disk 75. The fixed disk 75 is arranged so as to divide the main body 71 in the stacking direction L, and has a first continuous passage 75a and a second continuous passage 75b.

The first connecting passage 75a penetrates the fixed disk 75 in the thickness direction thereof, and communicates the space on the heat medium inflow port 72 side and the space on the first heat medium outflow port 76 side. The second passage 75b penetrates the fixed disk 75 in the thickness direction at a position adjacent to the first passage 75a. The second connecting passage 75b communicates with the space on the heat medium inflow port 72 side and the space on the second heat medium outflow port 77 side.

Inside the main body 71, the space on the first heat medium outlet 76 side and the space on the second heat medium outlet 77 side are partitioned. Therefore, the inflow and outflow of the heat medium occurs between the space on the side of the first heat medium outlet 76 and the space on the side of the second heat medium outlet 77 without passing through the first passage 75a and the second passage 75b. There is no.

The drive disc 74 is arranged along the surface of the fixed disc 75 on the heat medium inflow port 72 side, and is formed in a substantially fan-shaped plate shape. The drive disk 74 is formed in a size capable of closing at least one of the first passage 75a and the second passage 75b. The drive disc 74 is fixed to the rotating shaft 74a constituting the valve body portion 73.

Therefore, the drive disc 74 slides on the surface of the fixed disc 75 as the rotation shaft 74a rotates. As described above, the rotary shaft 74a reaches the inside of the drive unit 30 through the through hole 26 of the second layer side lid member 25. A gear 33a constituting the transmission mechanism 33 is fixed to the rotating shaft 74a in the drive unit 30. Therefore, the drive disk 74 slides on the surface of the fixed disk 75 as the electromagnetic motor 32 of the drive unit 30 operates.

That is, the heat medium three-way valve 70 can change the position of the drive disc 74 with respect to the fixed disc 75 by controlling the operation of the drive unit 30. Thereby, the heat medium three-way valve 70 can adjust the flow rate ratio of the heat medium flow rate flowing out from the first heat medium outlet 76 and the heat medium flow rate flowing out from the second heat medium outlet 77.

Subsequently, the adjustment of the flow rate ratio in the heat medium three-way valve 70 will be described with reference to FIGS. 11 to 14. In the following description, the opening degree of the first connecting passage 75a is referred to as the first opening degree Oa, and the opening degree of the second connecting passage 75b is referred to as the second opening degree Ob.

In the case shown in FIG. 11, the drive disk 74 fully closes the second passage 75b, and the first passage 75a is fully open. In other words, it indicates a state in which the first opening degree Oa is 100% and the second opening degree Ob is 0%. In this case, the heat medium three-way valve 70 is in a state where the entire flow rate of the heat medium flowing in from the heat medium inflow port 72 is discharged from the first heat medium outflow port 76.

When the drive disk 74 is gradually slid and moved in a predetermined direction (clockwise in FIG. 11) from the state shown in FIG. 11, the drive disk 74 advances to the first continuous passage 75a side. Move away from the second passage 75b.

That is, when this operation is performed, as shown in FIG. 14, the heat medium three-way valve 70 decreases the first opening degree Oa as the second opening degree Ob increases. Thereby, the heat medium three-way valve 70 can adjust the flow rate ratio of the heat medium at the first heat medium outlet 76 and the second heat medium outlet 77.

Then, as shown in FIG. 12, when the drive disk 74 fully closes the first passage 75a, the second passage 75b is fully opened. That is, the first opening degree Oa is 0% and the second opening degree Ob is 100%. In this case, the heat medium three-way valve 70 is in a state where the entire flow rate of the heat medium flowing in from the heat medium inflow port 72 is discharged from the second heat medium outflow port 77.

As described above, the first heat medium three-way valve 70a and the second heat medium three-way valve 70b having the configuration of the heat medium three-way valve 70 have the heat medium flow rate flowing out from one side of the outflow port and the outflow from the other side of the outflow port. The flow rate of the heat medium can be adjusted. Further, the heat medium three-way valve 70 can allow the heat medium to flow out from either one of the two outlets.

Therefore, according to the flow path switching device 1 according to the first embodiment, the operation of the valve body portion 73 of the first heat medium three-way valve 70a and the second heat medium three-way valve 70b is controlled to control the operation of the heat medium circuit 50. The flow path configuration can be switched as appropriate.

According to the heat medium three-way valve 70 having this configuration, as shown in FIG. 13, one of the first passage 75a and the second passage 75b is left in the fully open state, and the opening degree of the other one is maintained. Can be increased or decreased. Even in the state as shown in FIG. 13, the heat medium three-way valve 70 can adjust the flow rate of the heat medium flowing out from one side of the outlet and the flow rate of the heat medium flowing out from the other side of the outlet.

Then, in the flow path switching device 1, a heat insulating portion 13 is formed between the flow paths arranged in close proximity to each other in the first layer side flow path 11 and the second layer side flow path 16. For example, as shown in FIG. 15, on one surface side of the main body member 5, a groove-shaped heat insulating portion 13 is formed between the two first layer side flow paths 11.

The heat insulating portion 13 is formed independently of the first layer side flow path 11 and the second layer side flow path 16, and the heat medium does not flow into the heat insulating portion 13. Therefore, since the inside of the heat insulating portion 13 is filled with air, the heat insulating portion 13 can prevent heat transfer between the two first layer side flow paths 11. As a result, the heat insulating portion 13 can suppress the influence of heat transfer between the flow paths arranged close to each other, and each component device in the heat medium circuit 50 can be appropriately used.

Then, it is desirable that the heat insulating portion 13 is arranged at a position where a low temperature heat medium flows through one of the flow paths arranged close to each other and the high temperature heat medium flows through the other. This is because it is possible to maintain an appropriate temperature for each of the heat media flowing through the channels arranged in close proximity to each other.

As described above, according to the flow path switching device 1 according to the first embodiment, as shown in FIGS. 2, 7, and the like, the first layer side flow path forming portion 10 and the second layer side of the main body member 5 The flow path forming portion 15 and the driving portion 30 are laminated and arranged in the stacking direction L. Therefore, according to the flow path switching device 1, the functions of the piping, the joint, and the valve for switching the flow path configuration of the heat medium circuit 50 can be integrated, and a more compact configuration can be realized.

Further, as shown in FIG. 5, the first heat is generated by arranging the first layer side flow path forming portion 10, the second layer side flow path forming portion 15, and the driving portion 30 of the main body member 5 in the stacking direction L. The valve body portion 73 of the medium three-way valve 70a and the second heat medium three-way valve 70b can be arranged at close positions. Therefore, according to the flow path switching device 1, the configuration is compact and lightweight as compared with the case where a drive source such as a motor is arranged for each of the first heat medium three-way valve 70a and the second heat medium three-way valve 70b. , It is possible to switch the flow path configuration of the heat medium circuit 50.

As shown in FIG. 7, the first layer side flow path forming portion 10 is configured by forming a groove-shaped first layer side flow path 11 on one surface side of the block-shaped main body member 5, and is configured as a second layer side flow. The path forming portion 15 is configured by forming a groove-shaped second layer side flow path 16 on the other surface side of the main body member 5.

The one side of the main body member 5 is sealed by the first layer side lid member 20, and the other side of the main body member 5 is sealed by the second layer side lid member 25. As a result, in the flow path switching device 1, the first layer side flow path forming portion 10 and the second layer side flow path forming portion 15 can be reliably stacked and arranged, and a compact and lightweight configuration can be realized. ..

Further, as shown in FIG. 7, a flow path resistance portion 12 is formed in the first layer side flow path 11 extending linearly so as to connect the second connection port 35b to the eighth connection port 35h. The joint surface 12b of the flow path resistance portion 12 connects the surface of the main body member 5 so as to cross the first layer side flow path 11, and is joined to the first layer side lid member 20.

As a result, the flow path switching device 1 can join the first layer side lid member 20 to the main body member 5 by using the joint surface 12b of the flow path resistance portion 12, so that the main body member 5 and the first layer The joint strength of the side lid member 20 can be improved.

Further, the heat medium check valve 60, which is a functional component of the heat medium circuit 50, is held by the holding hole 12a of the flow path resistance portion 12. Therefore, the flow path resistance portion 12 adjusts the flow path resistance in the heat medium circuit 50, improves the joint strength of the first layer side lid member 20 with respect to the main body member 5, and the heat medium check valve 60 in the heat medium circuit 50. It plays various roles such as retention.

Further, as shown in FIG. 7 and the like, a plurality of flow path resistance portions 12 are arranged inside the same linear first layer side flow path 11. A first heat medium check valve 60a, a second heat medium check valve 60b, and a third heat medium check valve 60c are attached to the holding holes 12a of each flow path resistance portion 12 as functional parts. The joint surface 12b of each flow path resistance portion 12 is joined to the first layer side lid member 20.

As a result, in the linear first layer side flow path 11, a plurality of joint portions formed by the joint surfaces 12b can be arranged, so that the joint portions formed by the joint surfaces 12b can be provided at short intervals, and the linear flow path can be provided. The joint strength at the portion can be improved.

As shown in FIG. 6, a plurality of through holes 26 are formed in the second layer side lid member 25. The through hole 26 is penetrated by the rotation shaft 74a of the valve body portion 73 in the first heat medium three-way valve 70a and the second heat medium three-way valve 70b. Further, as shown in FIG. 2, an electromagnetic motor 32 as a drive source for each valve body portion 73 and a transmission mechanism 33 are attached to the second layer side lid member 25.

As a result, the positional relationship between the rotating shaft 74a penetrating the through hole 26 and the transmission mechanism 33 and the electromagnetic motor 32 can be accurately determined. Therefore, the valves in the first heat medium three-way valve 70a and the second heat medium three-way valve 70b. The body portion 73 can be reliably operated.

Further, as shown in FIG. 5, a plurality of positioning recesses 17 are formed in the second layer side flow path forming portion 15, and a plurality of positioning pins 27 are formed in the second layer side lid member 25. ing. By fitting each positioning pin 27 into each positioning recess 17, the second layer side lid member 25 can be positioned and joined to the main body member 5 at a predetermined position.

As a result, the positions of the rotating shaft 74a in the valve body portion 73 of the first heat medium three-way valve 70a and the second heat medium three-way valve 70b and the through hole 26 of the second layer side lid member 25 can be accurately aligned. Interference between the rotating shaft 74a and the through hole 26 can be suppressed. That is, the flow path switching device 1 can ensure the smooth operation of the valve body portion 73.

As shown in FIG. 15, a heat insulating portion 13 is formed between the flow paths arranged in close proximity to each other in the first layer side flow path 11 and the second layer side flow path 16. The heat insulating portion 13 prevents heat transfer between the two first layer side flow paths 11.

Therefore, the flow path switching device 1 can suppress the influence of heat transfer between the flow paths arranged in close proximity to each other by the heat insulating portion 13. As a result, according to the flow path switching device 1, the temperature of the heat medium flowing through each flow path can be appropriately maintained, so that each component device in the heat medium circuit 50 can be appropriately used.

As shown in FIGS. 9 to 14, the valve body portion 73 of the first heat medium three-way valve 70a and the second heat medium three-way valve 70b is the flow rate of the heat medium flowing into the first passage 75a and the second passage 75b. Is arranged to be adjustable. Then, as shown in FIG. 14, the drive disk 74 of the valve body portion 73 decreases the opening degree of the other as the opening degree of one of the first-passage passage 75a and the second-passage passage 75b increases. Let me.

Therefore, according to the flow path switching device 1, the flow path configuration of the heat medium circuit 50 can be switched to various configurations by controlling the operation of the first heat medium three-way valve 70a and the second heat medium three-way valve 70b. it can. Thereby, the heat medium circuit 50 can realize the air conditioning in the vehicle interior and the temperature adjustment of the in-vehicle device such as the heat generating device 54 in various modes.

(Second Embodiment)
Next, the flow path switching device 1 according to the second embodiment will be described with reference to FIGS. 16 to 19. The flow path switching device 1 according to the second embodiment constitutes a part of the heat medium circuit 50 as in the first embodiment described above.

Then, in the flow path switching device 1 according to the second embodiment, the first layer side flow path forming unit 10, the second layer side flow path forming unit 15, and the driving unit 30 are laminated in this order as in the first embodiment. It is a configuration in which they are stacked in the direction L.

Also in the second embodiment, the first layer side flow path 11 is formed on one surface side of the main body member 5, and constitutes the first layer side flow path forming portion 10. The first layer side lid member 20 is joined to one surface side of the main body member 5, and the first layer side flow path 11 is sealed.

A second layer side flow path 16 is formed on the other surface side of the main body member 5, and constitutes a second layer side flow path forming portion 15. A second layer side lid member 25 is joined to the other surface side of the main body member 5, and the second layer side flow path 16 is sealed.

The basic configuration of the flow path switching device 1 according to the second embodiment is that the first layer side flow path 11 and the second layer side flow path 16 are configured and the valve body portion 73 and the like are arranged. It is the same as one embodiment. Therefore, the same configuration in the second embodiment will not be described again.

The heat medium circuit 50 according to the second embodiment has a battery 57 as a target device for temperature adjustment in addition to the constituent devices according to the first embodiment described above. The heat medium circuit 50 according to the second embodiment is used for air-conditioning the interior of an electric vehicle and adjusting the temperature of an in-vehicle device (for example, a heat generating device 54) as well as adjusting the temperature of the battery 57.

Similar to the first embodiment, the flow path switching device 1 according to the second embodiment has a plurality of connection ports on the side surfaces of the main body member 5. As shown in FIG. 16, in the flow path switching device 1 according to the second embodiment, in addition to the first connection port 35a to the tenth connection port 35j similar to the first embodiment, the eleventh connection port 35k and the twelfth It has a connection port 35 liters.

Similar to the first embodiment described above, each component device in the heat medium circuit 50 is connected to the first connection port 35a to the tenth connection port 35j via a heat medium pipe. The correspondence between each connection port and the constituent devices is basically the same as that of the first embodiment.

The eleventh connection port 35k and the twelfth connection port 35l are connected to the heat medium passage 57a of the battery 57 via the heat medium piping. The battery 57 is a secondary battery (for example, a lithium ion battery) that stores electric power supplied to a motor generator or the like. The battery 57 is an assembled battery formed by connecting a plurality of battery cells in series or in parallel. The battery 57 generates heat during charging and discharging.

The heat medium passage 57a of the battery 57 is a heat medium passage for adjusting the temperature of the battery 57 by circulating a heat medium, and constitutes a heat exchange unit for equipment. That is, the heat medium passage 57a of the battery 57 is connected so that the heat medium of the heat medium circuit 50 can flow in and out.

The heat medium passage 57a of the battery 57 functions as a cooling unit for cooling the battery 57 using a low-temperature heat medium as a cooling heat source when the heat medium cooled by the water-refrigerant heat exchanger 52 flows. Further, the heat medium passage 57a of the battery 57 functions as a heating unit for heating the battery 57 using the high temperature heat medium as a heat source when a high temperature heat medium is distributed.

The heat medium passage 57a of the battery 57 is formed in a special case for the battery 57. The passage configuration of the heat medium passage 57a of the battery 57 is a passage configuration in which a plurality of passages are connected in parallel inside a special case.

As a result, the heat medium passage 57a can evenly exchange heat with the heat medium over the entire area of the battery 57. For example, the heat medium passage 57a is formed so that the heat of all the battery cells can be uniformly absorbed and all the battery cells can be cooled evenly.

Further, the flow path switching device 1 according to the second embodiment has a third heat medium three-way valve 70c and a heat medium on-off valve 78 as a configuration for switching the flow path configuration of the heat medium circuit 50. The third heat medium three-way valve 70c is composed of three types of flow rate adjusting valves, like the first heat medium three-way valve 70a and the second heat medium three-way valve 70b described above.

The heat medium on-off valve 78 is an on-off valve that opens and closes the flow path in the heat medium circuit 50, and has a valve body portion 73 like the heat medium three-way valve 70. In the valve body portion 73 of the heat medium on-off valve 78, the fixed disc 75 is formed with one continuous passage having the same structure as the first continuous passage 75a. By opening and closing the communication passage with the drive disk 74, the opening and closing operation of the heat medium on-off valve 78 is realized.

Subsequently, the configurations of the first layer side flow path 11 and the second layer side flow path 16 in the second embodiment will be described with reference to FIGS. 17 to 19.

The heat medium passage 52b of the first water pump 56a and the water-refrigerant heat exchanger 52 is connected between the first connection port 35a and the second connection port 35b according to the second embodiment via the heat medium piping. ing. As shown in FIG. 18, the first connection port 35a constitutes one end of the first layer side flow path 11. On the other hand, as shown in FIG. 19, the second connection port 35b constitutes one end of the second layer side flow path 16.

A heating device 53 and a heater core 51 are connected between the third connection port 35c and the fourth connection port 35d via a heat medium pipe. As shown in FIGS. 18 and 19, the third connection port 35c constitutes one end of the first layer side flow path 11, and the fourth connection port 35d is one end of the second layer side flow path 16. Consists of.

Further, a heat medium passage 54a of the heat generating device 54 is connected between the fifth connection port 35e and the sixth connection port 35f via a heat medium pipe. As shown in FIG. 18, the fifth connection port 35e constitutes one end of the first layer side flow path 11. On the other hand, as shown in FIG. 19, the sixth connection port 35f constitutes one end of the second layer side flow path 16.

As shown in FIG. 17, a second water pump 56b is connected between the seventh connection port 35g and the eighth connection port 35h via a heat medium pipe. As shown in FIG. 18, the 7th connection port 35g and the 8th connection port 35h each form one end of the first layer side flow path 11.

Further, a radiator 55 is connected between the 9th connection port 35i and the 10th connection port 35j via a heat medium pipe. As shown in FIG. 19, the ninth connection port 35i constitutes one end of the second layer side flow path 16. On the other hand, as shown in FIG. 18, the tenth connection port 35j constitutes one end of the first layer side flow path 11.

Then, as described above, the heat medium passage 57a of the battery 57 is connected between the 11th connection port 35k and the 12th connection port 35l via the heat medium piping. As shown in FIG. 18, the eleventh connection port 35k constitutes one end of the first layer side flow path 11. Then, as shown in FIG. 19, the 12th connection port 35l constitutes one end of the second layer side flow path 16.

In the first layer side flow path forming portion 10 according to the second embodiment, the first layer side flow path 11 extending from the first connection port 35a is the first layer side extending from the outlet of the fourth heat medium check valve 60d. It is connected to the flow path 11. A sixth communication portion 40f is formed in the first layer side flow path 11 between the first connection port 35a and the outlet of the fourth heat medium check valve 60d.

Here, as shown in FIGS. 17 to 19, the sixth communication portion 40f communicates with the second layer side flow path 16 extending from the fifth communication portion 40e, which will be described later, and the first layer side flow path 11. , The sixth connection portion 80f is formed.

Then, as shown in FIG. 19, the second layer side flow path 16 extending from the fourth connection port 35d is connected to the inflow port of the first heat medium three-way valve 70a. The heat medium flowing in from the inflow port of the first heat medium three-way valve 70a passes through the communication passage in the process of going through the inside of the first heat medium three-way valve 70a toward the outflow port, and passes from the second layer side flow path 16 to the first. It flows out to the layer side flow path 11.

The first layer side flow path 11 extending from one of the outlets of the first heat medium three-way valve 70a is the first layer side flow path 11 extending from the inflow port of the first heat medium check valve 60a, and the second heat medium check. It is connected to the first layer side flow path 11 extending from the outlet of the valve 60b and the first layer side flow path 11 extending from the fifth communication portion 40e. The first layer side flow path 11 extending from one of the outlets of the first heat medium three-way valve 70a is connected to the other three first layer side flow paths 11 to form the second connection portion 80b.

The fifth communication portion 40e communicates between the first layer side flow path 11 and the second layer side flow path 16 in the stacking direction L. Therefore, the heat medium flows between the first layer side flow path 11 and the second layer side flow path 16 via the fifth communication portion 40e.

As shown in FIG. 19, the second layer side flow path 16 extending from the fifth communication portion 40e has a sixth communication portion 40f at its end. Therefore, the first layer side flow path 11 including the sixth connection part 80f and the first layer side flow path 11 including the second connection part 80b are connected to each other via the fifth communication part 40e and the sixth communication part 40f. The distribution of heat medium between them can be guaranteed.

The first layer side flow path 11 extending from the other side of the outlet of the first heat medium three-way valve 70a is the first layer extending from the first layer side flow path 11 extending from the fifth connection port 35e and the first communication portion 40a. It is connected to the side flow path 11 and constitutes the fourth connection portion 80d.

As described above, in the first communication portion 40a, the heat medium flows between the first layer side flow path 11 and the second layer side flow path 16. As shown in FIG. 19, the second layer side flow path 16 extending from the first communication portion 40a is connected to the inflow port of the second heat medium three-way valve 70b. The heat medium flowing in from the inflow port of the second heat medium three-way valve 70b passes through the communication passage in the process of going through the inside of the second heat medium three-way valve 70b toward the outflow port, and passes from the second layer side flow path 16 to the first. It flows out to the layer side flow path 11.

The first layer side flow path 11 extending from one side of the outlet of the second heat medium three-way valve 70b is the first layer side extending from the first layer side flow path 11 extending from the seventh connection port 35g and the tenth connection port 35j. It is connected to the flow path 11 and constitutes the third connection portion 80c.

The first layer side flow path 11 extending from the other side of the outlet of the second heat medium three-way valve 70b has a second communication portion 40b at its end. In the second communication portion 40b, the heat medium flows between the first layer side flow path 11 and the second layer side flow path 16. As shown in FIG. 19, the second layer side flow path 16 extending from the second communication portion 40b extends to the ninth connection port 35i.

A third communication portion 40c is formed between the second communication portion 40b and the ninth connection port 35i. In the third communication portion 40c, the heat medium flows between the first layer side flow path 11 and the second layer side flow path 16. The first layer side flow path 11 extending from the third communication portion 40c is connected to one side of the inflow outlet of the heat medium on-off valve 78. In the heat medium on-off valve 78, the heat medium flows in and out between the first layer side flow path 11 and the second layer side flow path 16 in the process of flowing from one side to the other side of the inflow port.

As shown in FIG. 18, the first layer side flow path 11 extending from the third connection port 35c is the first layer side flow path 11 extending from the outlet of the first heat medium check valve 60a and the third heat medium three-way. It is connected to the first layer side flow path 11 extending from one of the outlets of the valve 70c, and constitutes the first connection portion 80a.

The second layer side flow path 16 extending from the second connection port 35b is connected to the inflow port of the third heat medium three-way valve 70c. The heat medium flowing in from the inflow port of the third heat medium three-way valve 70c passes through the communication passage in the process of going through the inside of the third heat medium three-way valve 70c toward the outflow port, and passes from the second layer side flow path 16 to the first. It flows out to the layer side flow path 11.

As described above, the first layer side flow path 11 extending from one of the outlets of the third heat medium three-way valve 70c is connected to the first connection portion 80a. As shown in FIG. 18, the first layer side flow path 11 extending from the other side of the outlet of the third heat medium three-way valve 70c is the first layer side flow path 11 extending from the eleventh connection port 35k and the fifth heat medium reverse. It is connected to the first layer side flow path 11 extending from the outlet of the check valve 60e, and constitutes the eighth connection portion 80h.

The first layer side flow path 11 extending from the eighth connection port 35h is the inflow port of the first layer side flow path 11 and the fifth heat medium check valve 60e extending from the inflow port of the second heat medium check valve 60b. It is connected to the first layer side flow path 11 extending from, and constitutes the tenth connection portion 80j.

As shown in FIG. 19, the second layer side flow path 16 extending from the sixth connection port 35f has a fourth communication portion 40d at its end. In the fourth communication section 40d, the heat medium flows between the first layer side flow path 11 and the second layer side flow path 16.

Here, as shown in FIG. 18, the fourth communication portion 40d is a first layer side flow path 11 that connects the outlet of the first heat medium check valve 60a and the inlet of the third heat medium check valve 60c. It is located inside the. Therefore, the fourth communication portion 40d is the first layer side flow path 11 extending from the outlet of the first heat medium check valve 60a, and the first layer side flow path 11 extending from the inflow port of the third heat medium check valve 60c. And the second layer side flow path 16 extending from the sixth connection port 35f are connected to form the fifth connection portion 80e.

As shown in FIG. 19, the second layer side flow path 16 extending from the 12th connection port 35l extends from the second layer side flow path 16 extending from the other side of the inflow port of the heat medium on-off valve and the 7th communication portion 40g. It is connected to the second layer side flow path 16 and constitutes the seventh connection portion 80 g. Therefore, the second layer side flow path 16 extending from the twelfth connection port 35l is connected to the first layer side flow path 11 extending from the third communication portion 40c via the heat medium on-off valve 78.

Then, in the 7th communication portion 40g, the heat medium flows between the first layer side flow path 11 and the second layer side flow path 16. The first layer side flow path 11 extending from the seventh communication portion 40 g is connected to the inflow port of the fourth heat medium check valve 60d.

According to the flow path switching device 1 according to the second embodiment, by switching the flow path configuration of the heat medium circuit 50, air conditioning in the vehicle interior, temperature adjustment of the heat generating device 54, and temperature adjustment of the battery 57 are performed. Can be done.

For example, in the flow path switching device 1 according to the second embodiment, as the flow path configuration of the heat medium circuit 50, the first water pump 56a → the water-refrigerant heat exchanger 52 → the third heat medium three-way valve 70c → the battery 57 → The heat medium is circulated in the order of the fourth heat medium check valve 60d → the first water pump 56a. At the same time, the heat medium is circulated in the order of the second water pump 56b → the second heat medium check valve 60b → the heat generating device 54 → the second heat medium three-way valve 70b → the radiator 55 → the second water pump 56b.

According to the heat medium circuit 50 having this flow path configuration, the waste heat of the heat generating device 54 can be dissipated to the outside air while cooling the battery 57 using the refrigeration cycle 90 as a cooling heat source. That is, the temperature adjustment of the battery 57 and the temperature adjustment of the heat generating device 54 can be performed independently and in parallel.

According to the flow path switching device 1 according to the second embodiment, in the circuit configuration of the heat medium circuit 50 described above, the circulation path of the heat medium by the second water pump 56b can be further switched. 2nd water pump 56b → 2nd heat medium check valve 60b → 3rd heat medium 3-way valve 70c → 1st heat medium check valve 60a → heating device 53 → heater core 51 → 1st heat medium 3-way valve 70a → 2nd heat The heat medium is circulated in the order of medium three-way valve 70b → radiator 55 → second water pump 56b.

According to this configuration, cooling of the battery 57 by the refrigeration cycle 90, heating of the vehicle interior using the waste heat of the heat generating device 54, and heat dissipation of excess heat related to the waste heat of the heat generating device 54 can be performed in parallel. it can.

Further, the flow path switching device 1 according to the second embodiment has a flow path configuration of the heat medium circuit 50, that is, the first water pump 56a → the water-refrigerant heat exchanger 52 → the heating device 53 → the heater core 51 → the first heat medium. The heat medium is circulated in the order of the three-way valve 70a → the heating device 54 → the third heat medium check valve 60c → the first water pump 56a. At the same time, the heat medium is circulated in the order of the second water pump 56b → the fifth heat medium check valve 60e → the battery 57 → the heat medium on-off valve 78 → the radiator 55 → the second water pump 56b.

As a result, according to the heat medium circuit 50 having this flow path configuration, the waste heat of the heat generating device 54 and the air conditioning in the vehicle interior using the refrigeration cycle 90 and the cooling of the battery 57 by heat dissipation from the outside air can be executed in parallel. it can.

As described above, according to the flow path switching device 1 according to the second embodiment, even when the temperature adjustment of the battery 57 is added as a function of the heat medium circuit 50, it is common to the above-described first embodiment. The action and effect produced from the configuration and operation of the above can be obtained in the same manner as in the first embodiment.

(Third Embodiment)
Subsequently, the flow path switching device 1 according to the third embodiment will be described with reference to FIGS. 20 to 21. The flow path switching device 1 according to the third embodiment constitutes a part of the heat medium circuit 50 as in the above-described embodiment.

The flow path switching device 1 according to the third embodiment is basically configured in the same manner as the first embodiment, including the configuration of the heat medium circuit 50. The differences in the third embodiment are the configuration of the flow path resistance portion 12 and the configuration of the first heat medium check valve 60a to the third heat medium check valve 60c. Therefore, the same configuration in the third embodiment will not be described again, and the differences will be described in detail.

FIG. 20 shows a cross section of the flow path switching device 1 according to the third embodiment along a first layer side flow path 11 extending linearly so as to connect the second connection port 35b to the eighth connection port 35h. It is a figure. Also in the third embodiment, a plurality of flow path resistance portions 12 are arranged inside the linear first layer side flow path 11 connecting the second connection port 35b and the eighth connection port 35h.

As in the first embodiment, each flow path resistance portion 12 is formed in a wall shape so as to cross the groove-shaped first layer side flow path 11, and has a holding hole 12a. .. The holding hole 12a is formed so as to penetrate the flow path resistance portion 12 in the thickness direction. That is, the flow path resistance portion 12 is changed so as to reduce the flow path cross section of the first layer side flow path 11, thereby increasing the flow path resistance of the heat medium flowing through the first layer side flow path 11. ing.

In the third embodiment, the inner diameter of the holding hole 12a is formed to be smaller than the outer diameter of the spherical valve body 62 constituting the valve body of the first heat medium check valve 60a to the third heat medium check valve 60c. .. As shown in FIG. 20, each spherical valve body 62 is arranged closer to the second connection port 35b than the flow path resistance portion 12, and moves according to the flow of the heat medium passing through the first layer side flow path 11. It is configured to be possible.

The regulation piece 63a and the regulation protrusion 63b are formed so as to face each other on the second connection port 35b side of the position of each spherical valve body 62. As shown in FIGS. 20 and 21, the regulation piece 63a is formed so as to project from the first layer side lid member 20 toward the inside of the first layer side flow path 11.

On the other hand, the regulation protrusion 63b protrudes from the bottom surface of the groove-shaped first layer side flow path 11 toward the open portion in the first layer side flow path 11. The regulation piece 63a and the regulation protrusion 63b are arranged so that the flow path width in the first layer side flow path 11 is smaller than the outer diameter of the spherical valve body 62. That is, the regulation piece 63a and the regulation protrusion 63b operate in the same manner as the regulation pin 63 of the heat medium check valve 60 in the first embodiment.

Therefore, the spherical valve body 62 is movably housed inside the first layer side flow path 11 in the range from the regulation piece 63a and the regulation protrusion 63b to the flow path resistance portion 12. Therefore, according to the example shown in FIG. 20, when the heat medium flows from the eighth connection port 35h side to the second connection port 35b side, the spherical valve body 62 follows the flow of the heat medium and regulates the regulation piece 63a and the regulation piece 63a. It moves to the side of the protrusion 63b.

In this case, as the spherical valve body 62 moves, the holding hole 12a of the flow path resistance portion 12 is opened. Further, as shown in FIG. 21, since the flow path of the first layer side flow path 11 is not blocked by the spherical valve body 62 on the regulation piece 63a and the regulation protrusion 63b side, the eighth connection port 35h The flow of the heat medium from the side to the second connection port 35b side is allowed.

At this time, the spherical valve body 62 comes into contact with the regulation piece 63a or the regulation protrusion 63b, and the movement accompanying the flow of the heat medium is restricted, so that the spherical valve body 62 flows out from a predetermined range in the first layer side flow path 11. There is nothing to do.

On the other hand, when the heat medium flows from the second connection port 35b side toward the eighth connection port 35h side, the heat medium that has passed through the regulation piece 63a and the regulation protrusion 63b faces the holding hole 12a of the flow path resistance portion 12. Flow. At this time, the spherical valve body 62 moves toward the holding hole 12a and sits down according to the flow of the heat medium. That is, the holding hole 12a of the flow path resistance portion 12 is closed by the spherical valve body 62, and the flow of the heat medium from the second connection port 35b side to the eighth connection port 35h side is prohibited.

That is, the first heat medium check valve 60a to the third heat medium check valve 60c in the third embodiment are the first layer side flow path 11 from the flow path resistance portion 12 to the regulation piece 63a and the regulation protrusion 63b. , Spherical valve body 62. As a result, a more compact configuration can be obtained while exhibiting the same function as the heat medium check valve 60 in the first embodiment.

In other words, the first layer side flow path 11 from the flow path resistance portion 12 to the regulation piece 63a and the regulation protrusion 63b corresponds to the valve body case 61 in the first embodiment. The regulation piece 63a and the regulation protrusion 63b correspond to the regulation pin 63 in the first embodiment. The holding hole 12a of the flow path resistance portion 12 is the flow path hole 61a in the first embodiment, and constitutes a valve seat on which the spherical valve body 62 is seated. That is, the flow path resistance portion 12 holds the spherical valve body 62 as a functional component.

Then, as shown in FIG. 20, the joint surface 12b is also formed in the flow path resistance portion 12 according to the third embodiment. The joint surface 12b of the flow path resistance portion 12 is configured by connecting the surfaces on one surface side of the main body member 5 so as to cross the first layer side flow path 11. Then, as shown in FIG. 20, when the first layer side lid member 20 is attached to one surface side of the main body member 5, the joint surface 12b comes into contact with the surface of the first layer side lid member 20.

Therefore, according to the flow path switching device 1, when the first layer side lid member 20 is joined to the main body member 5 by laser welding or the like, it can be joined via the joining surface 12b of the flow path resistance portion 12. As a result, in the flow path switching device 1, the joint strength of the first layer side lid member 20 with respect to the main body member 5 can be improved by using the plurality of joint surfaces 12b.

Further, since the joint surface 12b is formed by connecting the surfaces on one surface side of the main body member 5, when laser welding or the like is adopted, the setting change such as the focal length can be minimized and is continuous. Can perform various joining operations.

As described above, according to the flow path switching device 1 according to the third embodiment, even when the configurations of the flow path resistance portion 12 and the first heat medium check valve 60a are changed, the above-mentioned first The action and effect produced from the configuration and operation common to the first embodiment can be obtained in the same manner as in the first embodiment.

In the third embodiment, the case where the device is applied to the flow path switching device 1 according to the first embodiment has been described, but the present invention is not limited to this mode. That is, it is also possible to apply the configuration of the flow path resistance portion 12 and the first heat medium check valve 60a in the third embodiment to the flow path switching device 1 according to the second embodiment.

Further, in the third embodiment, as a configuration for restricting the movement range of the spherical valve body 62, the regulation piece 63a of the first layer side lid member 20 and the first layer side flow path 11 side which is the main body member 5 are formed. Although the regulation protrusion 63b was used, the present invention is not limited to this aspect. It is also possible to adopt a configuration in which either the regulation piece 63a or the regulation protrusion 63b is used. Further, the protruding direction of the regulation protrusion 63b does not have to be on the open side of the first layer side flow path 11, and if the movement of the spherical valve body 62 can be restricted, the inner wall surface of the first layer side flow path 11 can be restricted. It may be configured to protrude parallel to the bottom surface from the bottom.

(Other embodiments)
The present disclosure is not limited to the above-described embodiment, and can be variously modified as follows without departing from the gist of the present disclosure.

(1) In the above-described embodiment, one surface side of the main body member 5 in the flow path switching device 1 is the first layer side flow path forming portion 10, and the other surface side is the second layer side flow path forming portion 15. , Not limited to this aspect. It is also possible to configure the first layer side flow path forming portion 10 and the second layer side flow path forming portion 15 as separate members. Further, one of the first layer side flow path 11 of the first layer side flow path forming portion 10 and the second layer side flow path 16 of the second layer side flow path forming portion 15 is provided with a plurality of heat medium pipes. It is also possible to configure.

(2) Further, in the above-described embodiment, the first layer side flow path 11 and the second layer side flow path 16 are formed in a groove shape on the surface of the main body member 5, but the present invention is limited to this embodiment. is not. It suffices that the first layer side flow path 11 and the second layer side flow path 16 are formed on the first layer side flow path forming portion 10 and the second layer side flow path forming portion 15 which are arranged in a laminated manner, respectively. , The method of forming the first layer side flow path 11 and the like can be appropriately changed.

(3) Then, in the above-described embodiment, as shown in FIGS. 7 and 9, the flat plate-shaped first layer side lid member 20 and the second layer side lid member 25 are used, but the present invention is limited to this. It's not a thing. The surface of the first layer side lid member 20 and the second layer side lid member 25 may be processed so as to face the main body member 5.

For example, a recess formed in the same pattern as the first layer side flow path 11 may be provided on the surface of the first layer side lid member 20 facing the main body member 5. Due to the concave shape on the lid member side and the groove shape on the main body member 5, it is possible to secure the flow path area such as the flow path on the first layer side and improve the strength as the lid member.

(4) Further, in the above-described embodiment, as shown in FIG. 5, a positioning recess 17 formed on the other surface side of the main body member 5 and a positioning pin 27 formed on the second layer side lid member 25. Was made to function as a positioning unit in cooperation with each other, but the present invention is not limited to this mode.

For example, a positioning pin may be provided in the second layer side flow path forming portion 15, and a positioning recess may be provided in the second layer side lid member 25. Further, the combination of the pin and the recess is not limited, and if the second layer side flow path forming portion 15 and the second layer side lid member 25 can be positioned from the shape characteristics of the configuration, the rib and the groove, etc. Various aspects can be adopted.

(5) Then, in the above-described embodiment, the heat insulating portion 13 is provided between the flow paths arranged in close proximity to the first layer side flow path 11 and the second layer side flow path 16. It is not limited to the aspect shown in FIG. For example, in the heat medium three-way valve 70, heat insulation is provided between the flow path extending from the first continuous passage 75a to the first heat medium outlet 76 and the flow path extending from the second continuous passage 75b to the second heat medium outlet 77. The portion 13 may be formed.

(6) Further, in the above-described embodiment, an example in which the flow path switching device 1 according to the present disclosure is applied to a heat medium circuit 50 in a vehicle air conditioner having an in-vehicle device cooling function has been described, but the present invention is limited to this. It's not something.

The flow path switching device 1 according to the present disclosure is not limited to the heat medium circuit for vehicles, and may be applied to a heat medium circuit such as a stationary air conditioner. For example, it may be applied to a heat medium circuit such as an air conditioner having a server cooling function that air-conditions a room in which a server is housed while appropriately adjusting the temperature of the server (computer).

(7) Then, in the above-described embodiment, as the plurality of valve body portions 73 in the flow path switching device 1, the first heat medium three-way valve 70a, the second heat medium three-way valve 70b, the third heat medium three-way valve 70c, and heat The valve body portion 73 of the medium on-off valve 78 has been adopted, but the present invention is not limited to this. If the flow path configuration in the heat medium circuit 50 can be switched, other configurations such as a combination of a plurality of on-off valves can be adopted.

(8) Further, in the above-described embodiment, an example in which an ethylene glycol aqueous solution is used as the heat medium of the heat medium circuit 50 has been described, but the heat medium is not limited to this. For example, dimethylpolysiloxane, a solution containing nanofluid, an antifreeze solution, or the like can be adopted as the heat medium.

(9) Then, in the above-described embodiment, the holding hole 12a is formed in the flow path resistance portion 12 and changed so as to reduce the flow path cross section of the first layer side flow path 11. It is not limited. Various modes can be adopted as long as the flow path resistance of the heat medium can be increased by changing the flow path cross section. For example, by rapidly expanding the cross-sectional area of the flow path, a vortex of a heat medium may be generated in the expanded portion to increase the flow path resistance.

1 Flow path switching device 5 Main body member 10 1st layer side flow path forming part 11 1st layer side flow path 15 2nd layer side flow path forming part 16 2nd layer side flow path 20 1st layer side lid member 25 2nd Layer side lid member 30 Drive unit 50 Heat medium circuit

Claims (9)

A flow path switching device for switching the flow path configuration of the fluid circuit (50) through which the fluid circulates.
The first layer side flow path forming portion (10) in which the first layer side flow path (11) connected to the fluid circuit is formed, and
A second layer side flow path forming portion (15) that communicates with the first layer side flow path at a plurality of locations and has a second layer side flow path (16) connected to the fluid circuit.
A plurality of valve body portions (73) for adjusting the flow rate of the fluid passing through the communication passages (75a, 75b) communicating the first layer side flow path and the second layer side flow path are driven at least in conjunction with each other. With a drive unit (30) to make it
The valve body portion is arranged inside the second layer side flow path.
A flow path switching device in which the first layer side flow path forming portion, the second layer side flow path forming portion, and the driving portion are stacked and arranged in this order. The first layer side flow path forming portion is formed by forming the first layer side flow path in a groove shape with respect to one surface side of the main body member (5) formed in a block shape.
The second layer side flow path forming portion has a groove shape in the second layer side flow path with respect to the other surface side located on the back side of the surface on which the first layer side flow path is formed in the main body member. It is composed of formed in
One side of the main body member is sealed by the first layer side lid member (20).
The flow path switching device according to claim 1, wherein the other surface side of the main body member is sealed by a second layer side lid member (25). Inside the flow path in the first layer side flow path and the second layer side flow path, a flow is formed so as to cross the groove-shaped flow path, and the flow path cross section in the flow path is changed. The road resistance part (12) is arranged,
The flow path resistance portion has a joint surface (12b) that connects the surface of the main body member so as to cross the flow path and is joined to the first layer side lid member or the second layer side lid member. The flow path switching device according to claim 2. The flow path switching device according to claim 3, wherein the flow path resistance portion holds a functional component of the fluid circuit inside the flow path. The flow path switching device according to claim 3 or 4, wherein a plurality of the flow path resistance portions are arranged in the same linear flow path in the first layer side flow path and the second layer side flow path. The second layer side lid member has a plurality of through holes (26) penetrated by the rotation shaft (74a) of the valve body portion.
The second layer side lid member includes a motor (32) as a drive source for the valve body portion and a transmission mechanism (33) configured to be able to transmit the driving force of the motor to each of the rotating shafts. The flow path switching device according to any one of claims 2 to 5, which is attached. Claims 2 to 2 to claim 2, wherein positioning portions (17, 27) for positioning the second layer side lid member with respect to the main body member are formed on the other surface side of the second layer side lid member and the main body member. The flow path switching device according to any one of 6. In the first layer side flow path and the second layer side flow path, a heat insulating portion (13) for reducing heat transfer between the flow paths is arranged between the flow paths arranged close to each other. The flow path switching device according to any one of claims 1 to 7. The valve body portion is arranged inside the second layer side flow path so that the flow rate of the fluid flowing into the two communication passages (75a, 75b) can be adjusted.
The flow path switching device according to any one of claims 1 to 8, wherein the opening degree of one of the two communication passages is increased and the opening degree of the other is decreased.

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