JP2016217473A - Valve, adsorption type heat pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To acquire a valve capable of reducing stroke of a valve member by reducing a driving force for driving the valve member.SOLUTION: A valve has three or more ports 49, and it includes: a housing 40 whose connection parts are connected to the three or more ports respectively, and in which a closed space whose pressure is lower than the atmospheric pressure is formed inside; a valve member 50 stored inside the housing and rotatably supported by the housing, and for switching the communicating ports by the rotation position; a drive part 80 disposed outside of the housing and for allowing the valve member to perform linear motion by a magnetic force; and a conversion mechanism 51 for converting a linear motion of the valve member by the drive part into the rotary motion, and for changing the rotation position of the valve member.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a valve and an adsorption heat pump.

  Patent Document 1 discloses an adsorption refrigerator. In this adsorption refrigerator, the space through which the heat medium flows is a closed space whose pressure is lower than the atmospheric pressure. This closed space is formed by an evaporator, a condenser, two adsorbers, and the like. A plate-like valve body is provided at a communication port that communicates the chambers of the evaporator, the condenser, and the two adsorbers. The valve body is configured to open and close due to a pressure difference between the chambers.

JP 2011-202922 A

  Here, as a valve member used for a valve such as a three-way valve that switches communication ports (communication passages) communicating with each other in the closed space in the adsorption heat pump, there is a valve member that is operated by an actuator such as an air cylinder. In such a valve member, a part of the valve member is exposed to the outside of the closed space and is driven by an actuator disposed outside the closed space.

  In this configuration, the inside of the closed space is set to a pressure lower than the atmospheric pressure, while the outside of the closed space is set to the atmospheric pressure. Therefore, when the atmospheric pressure acts on the valve member, the valve member is opened or closed. Therefore, it is necessary to drive the valve member against the atmospheric pressure. Thereby, the drive force which drives a valve member becomes large.

  In addition, when the valve member is driven by a linear motion and the communication port (communication passage) is switched, the communication member (communication passage) needs to be arranged in the direction of linear motion. Longer in the direction of movement.

  In view of the above facts, an object of the present invention is to obtain a valve that can reduce the driving force for driving the valve member and reduce the stroke of the valve member.

  The invention of claim 1 has three or more ports, and a casing in which a connection space is connected to each of the three or more ports to form a closed space whose pressure is lower than atmospheric pressure. A valve member that is housed inside the housing and is rotatably supported by the housing and communicates according to a rotational position, and a valve member that is disposed outside the housing and linearly moves the valve member by a magnetic force. A drive unit that moves, and a conversion mechanism that converts a linear motion of the valve member by the drive unit into a rotational motion and changes a rotational position of the valve member.

  According to the configuration of the first aspect, the drive unit causes the drive member to linearly move from the outside of the casing by the magnetic force, with respect to the valve member housed in the casing that is a closed space. The conversion mechanism converts the linear motion of the valve member by the drive unit into a rotational motion, and changes the rotational position of the valve member. The valve member switches a port to be communicated depending on the rotation position.

  Here, in the configuration of the first aspect, the closed space is set to a pressure lower than the atmospheric pressure. However, since the valve member is accommodated in the closed space, the atmospheric pressure does not act on the valve member. For this reason, compared with the case where a part of valve member is exposed outside the closed space and the atmospheric pressure acts on the valve member (first comparative example), the driving force for driving the valve member can be reduced.

  Further, in the first aspect, as described above, the port to be communicated is switched by converting the linear motion of the valve member by the drive unit into the rotational motion and changing the rotational position of the valve member. For this reason, the amount of movement of the valve member in the linear motion direction compared to the case of switching the port that communicates the valve member with the position in the linear motion direction without converting the linear motion of the valve member into the rotational motion (second comparative example). Even if is small, the port to communicate with can be switched. Therefore, the stroke of the valve member can be reduced as compared with the second comparative example described above.

  Invention of Claim 2 is a valve | bulb of Claim 1 used for an adsorption-type heat pump, Comprising: The said housing | casing WHEREIN: Each of the said three in three or more reactors which produces | generates at least one of cold and warm temperature Each of the above ports is connected directly or indirectly, and the adsorbate flows in the closed space.

  According to the structure of Claim 2, the reactor which adsorbate distribute | circulates can be switched by switching the port connected according to the rotation position of a valve member.

  Here, in the structure of Claim 2, the port to communicate is switched by converting the linear motion of the valve member by a drive part into rotational motion, and changing the rotation position of a valve member. Therefore, since the ports can be arranged while being shifted in the rotation direction of the valve member, the stroke of the valve member can be kept small even if the number of reactors through which the adsorbate flows is increased to increase the number of ports.

  In the invention of claim 3, the three or more ports include a first port, a second port, and a third port, and the first port is located at one end side in the rotation axis direction of the valve member in the housing. The second port and the third port open in a direction intersecting the rotation axis direction at different positions in the casing in the rotation direction of the valve member, and one end portion is provided inside the valve member. A flow path is formed which communicates with the first port and whose other end communicates with one of the second port and the third port depending on the rotational position of the valve member.

  According to the structure of Claim 3, the one end part of the flow path of a valve member is connected with the 1st port opened in the one end side of the rotating shaft direction of a valve member. On the other hand, the other end of the flow path communicates with one of the second port and the third port depending on the rotational position of the valve member. Thereby, it can switch to the state which connects a 1st port and a 2nd port, and the state which communicates a 1st port and a 3rd port by changing the rotation position of a valve member.

  According to a fourth aspect of the present invention, the other end portion of the flow path is not communicated with any of the second port and the third port depending on the rotational position of the valve member.

  According to the configuration of the fourth aspect, the first port can be switched to a non-communication state in which neither the second port nor the third port is communicated by changing the rotational position of the valve member.

According to a fifth aspect of the present invention, the conversion mechanism is provided in the housing, is fitted into a spiral groove formed on the outer periphery of the valve member, and is supported rotatably in a spiral direction along the spiral groove. Consists of a spherical support.

  According to the configuration of the fifth aspect, the valve member can be rotated in the spiral direction along the spiral groove by causing the valve member to linearly move along the rotation axis direction. And the port to communicate can be switched by the rotation position of a valve member changing.

  Here, in the structure of Claim 5, a conversion mechanism is comprised by the spherical support part fitted to the spiral groove formed in the outer periphery of a valve member. Thus, since the conversion mechanism is configured by the support structure of the valve member, the configuration of the valve can be simplified compared to the case where the conversion mechanism is provided separately from the support structure of the valve member.

  The invention according to claim 6 is provided with an elastic member that is housed in the housing and urges the valve member with an elastic force on one side in a rotation axis direction of the valve member, and the drive unit includes the elastic member. The valve member is linearly moved in a direction opposite to the urging direction of the elastic member against the urging force.

  According to the structure of Claim 6, a valve member moves to one side of the rotating shaft direction of a valve member with the urging | biasing force of an elastic member. Further, the drive unit linearly moves the valve member in a direction opposite to the urging direction of the elastic member against the urging force of the elastic member. The conversion mechanism converts the linear motion of the valve member by the drive unit into a rotational motion, and changes the rotational position of the valve member. The valve member switches a port to be communicated depending on the rotation position.

  Thus, since the drive unit only needs to drive the valve member in one direction, the configuration of the drive unit is simplified compared to the case where the drive unit drives the valve member in both one and the other directions of the rotation axis direction of the valve member. Can be

  In the invention of claim 7, the casing is formed of a non-magnetic material.

  According to the structure of Claim 7, since the housing | casing is formed with the nonmagnetic material, it can suppress that the magnetic force which acts on a valve member from a drive part is received.

  In the invention according to claim 8, the casing is formed of austenitic stainless steel as the nonmagnetic material.

  According to the structure of Claim 8, since the housing | casing is formed with the austenitic stainless steel as a nonmagnetic material, even when water etc. are used as a fluid which distribute | circulates between area | regions, a housing | casing is hard to corrode.

  The invention according to claim 9 has three or more reactors that generate at least one of cold and hot, and three or more ports, and each of the three or more ports has the three or more reactors. A casing in which a closed space in which each is directly or indirectly connected and set to a pressure lower than the atmospheric pressure is formed, and is housed in the casing and rotatably supported by the casing; A valve member that switches the port to be communicated according to a rotational position, a drive unit that is disposed outside the housing and linearly moves the valve member by magnetic force, and converts the linear motion of the valve member by the drive unit into rotational motion And a conversion mechanism that changes the rotational position of the valve member.

  According to the configuration of the ninth aspect, the drive unit causes the drive member to linearly move from the outside of the casing by the magnetic force, with respect to the valve member housed in the casing that is a closed space. The conversion mechanism converts the linear motion of the valve member by the drive unit into a rotational motion, and changes the rotational position of the valve member. The valve member switches a port to be communicated depending on the rotation position. Thereby, the reactor through which the adsorbate flows can be switched.

  Here, in the configuration of the ninth aspect, the closed space is set to a pressure lower than the atmospheric pressure. However, since the valve member is accommodated in the closed space, the atmospheric pressure does not act on the valve member. For this reason, compared with the case where a part of valve member is exposed outside the closed space and the atmospheric pressure acts on the valve member (first comparative example), the driving force for driving the valve member can be reduced.

  Further, in the ninth aspect, as described above, the port to be communicated is switched by converting the linear motion of the valve member by the drive unit into the rotational motion and changing the rotational position of the valve member. For this reason, the amount of movement of the valve member in the linear motion direction compared to the case of switching the port that communicates the valve member with the position in the linear motion direction without converting the linear motion of the valve member into the rotational motion (second comparative example). Even if is small, the port to communicate with can be switched. Therefore, the stroke of the valve member can be reduced as compared with the second comparative example described above.

  In the invention of claim 10, the three or more reactors include an evaporator that evaporates adsorbate, a first adsorber that adsorbs the adsorbate of the evaporator and generates cold heat in the evaporator, A second adsorber that adsorbs the adsorbate adsorbed on the first adsorber and generates cold heat in the first adsorber, wherein the three or more ports are a first port and a second adsorber. A first port connected to the first adsorber, the second port connected to the evaporator, and the third port connected to the second adsorber. By changing the rotational position of the valve member, the state is switched between a state in which the first port and the second port are communicated and a state in which the first port and the third port are communicated.

  According to the configuration of the tenth aspect, the first adsorber adsorbs the adsorbate of the evaporator and cools it by the evaporator by positioning the valve member at the rotation position where the first port and the second port communicate with each other. The operation of generating Further, the second adsorber adsorbs the adsorbate adsorbed on the first adsorber by changing the rotational position of the valve member to switch the first port and the third port to communicate with each other. The operation of generating cold heat in the vessel can be executed.

  Since this invention set it as the said structure, the driving force which drives a valve member can be reduced, and the stroke of a valve member can be made small.

It is the schematic which shows the structure of the adsorption type heat pump of this embodiment. It is the schematic which shows the structure of the three-way valve of this embodiment. It is the schematic which shows the structure of the three-way valve of this embodiment. It is the schematic which shows the structure of the three-way valve of this embodiment. It is explanatory drawing which shows the cold production | generation state in the adsorption type heat pump of this embodiment. It is explanatory drawing which shows the cold production | generation state in the adsorption type heat pump of this embodiment. It is explanatory drawing which shows the reproduction | regeneration state in the adsorption type heat pump of this embodiment. It is explanatory drawing which shows the reproduction | regeneration state in the adsorption type heat pump of this embodiment. It is explanatory drawing which shows the reproduction | regeneration state in the adsorption type heat pump of this embodiment. It is the schematic which shows the structure of the valve | bulb of a comparative example.

  Hereinafter, an example of an embodiment according to the present invention will be described with reference to the drawings.

(Adsorption heat pump 12)
First, the configuration of the adsorption heat pump 12 (hereinafter simply referred to as “heat pump 12”) will be described. FIG. 1 shows the configuration of the heat pump 12.

  As shown in FIG. 1, the heat pump 12 includes a tank 13, an evaporator / condenser 14 (an example of a reactor), a first adsorber 20 (an example of a reactor), and a second adsorber 22 (a reactor). Example).

  An evaporation / condensation chamber 14 </ b> A is formed inside the evaporation / condenser 14. The evaporator / condenser 14 has both an evaporator function and a condenser function. That is, in the evaporator / condenser 14, when energy (hot heat) acts on the adsorbate (liquid state) in the evaporation / condensing chamber 14A, the adsorbate is evaporated, and cold is generated at that time. In the evaporator / condenser 14, when energy is taken from the adsorbate (gas state) in the evaporation / condensing chamber 14 </ b> A, the adsorbate is condensed and heat is generated at that time.

  The tank 13 functions as a storage unit that stores the adsorbate supplied to the evaporator / condenser 14. The tank 13 is in communication with the evaporator / condenser 14 by a supply pipe 15. A supply valve 35 is provided in the supply pipe 15. When the supply valve 35 is opened, the supply pipe 15 is opened, and the adsorbate is supplied from the tank 13 to the evaporator / condenser 14.

  A first adsorption chamber 20A and a second adsorption chamber 22A are formed inside the first adsorber 20 and the second adsorber 22, respectively. Different types of adsorbents are accommodated in the first adsorption chamber 20A and the second adsorption chamber 22A, respectively. For the adsorbent of the second adsorber 22, for example, a material that desorbs the adsorbate with heat at a regeneration temperature higher than that of the adsorbent of the first adsorber 20 is selected.

  In the present embodiment, the adsorbent of the first adsorber 20 is, for example, AQSOA-Z05 (“AQSOA” is a registered trademark of Mitsubishi Plastics), and the adsorbent of the second adsorber 22 is, for example, Y-type zeolite. . As the adsorbate, for example, water or ammonia can be used. Water and ammonia are adsorbed and desorbed from the adsorbent under the conditions (temperature and pressure) required in the heat pump 12, and can be procured at low cost.

  The evaporator / condenser 14 and the first adsorber 20 are connected (connected) by a first communication pipe 16. A first communication path 16 </ b> A is formed inside the first communication pipe 16. The first communication pipe 16 is provided with a three-way valve 18 (an example of a valve).

  Note that the first communication pipe 16 specifically includes a first pipe 71 disposed on the evaporator / condenser 14 side with respect to the three-way valve 18 and a second pipe disposed on the first adsorber 20 side with respect to the three-way valve 18. A tube 72.

  The second adsorber 22 is connected (connected) to the first communication pipe 16 through the three-way valve 18 by the second communication pipe 17. A second communication passage 17 </ b> A is formed inside the second communication pipe 17.

  The three-way valve 18 includes a first communication state in which the first pipe 71 (evaporator / condenser 14) and the second pipe 72 (first adsorber 20) communicate with each other, and the second pipe 72 (first adsorber 20). The second communication state in which the second communication pipe 17 (second adsorber 22) communicates is switched to the non-communication state in which none of the first pipe 71, the second pipe 72, and the second communication pipe 17 communicates. The specific configuration of the three-way valve 18 will be described later.

  When the three-way valve 18 enters the first communication state, the adsorbate can be moved between the evaporator / condenser 14 and the first adsorber 20. Further, when the three-way valve 18 is in the second communication state, the adsorbate can be moved between the first adsorber 20 and the second adsorber 22. When the three-way valve 18 is not in communication, the adsorbate cannot move between the evaporator / condenser 14, the first adsorber 20 and the second adsorber 22 via the three-way valve 18. Even when the three-way valve 18 is not in communication, the adsorbate can move between the evaporator / condenser 14 and the second adsorber 22 through the third communication pipe 24 as follows.

  The evaporator / condenser 14 and the second adsorber 22 are connected (connected) by a third communication pipe 24. A third communication path 24 </ b> A is formed inside the third communication pipe 24. The third communication pipe 24 is provided with an on-off valve 26. When the on-off valve 26 is opened, the third communication pipe 24 (third communication path 24A) is opened and passes between the evaporator / condenser 14 and the second adsorber 22 via the first adsorber 20. The adsorbate can be moved without any trouble. When the on-off valve 26 is closed, the third communication pipe 24 (third communication path 24A) is closed, and the adsorbate cannot move between the evaporator / condenser 14 and the second adsorber 22.

  The evaporator / condenser 14 is provided with a connecting pipe 30A that connects two heat sources (a low-temperature heat source 28L and an intermediate-temperature heat source 28M). The connecting pipe 30A branches on the heat source side corresponding to each heat source, and on-off valves 32L and 32M are provided at the branched portions. When the on-off valves 32L and 32M are opened, the heat exchange medium flows from the heat source to the evaporator / condenser 14 and is exchanged by the evaporator / condenser 14 to return to the heat source.

  The first adsorber 20 is provided with a connecting pipe 30B that connects three heat sources (a low temperature heat source 28L, an intermediate temperature heat source 28M, and a high temperature heat source 28H). The connection pipe 30B branches on the heat source side corresponding to each heat source, and on-off valves 34L, 34M, and 34H are provided at the branch portions. When the on-off valves 34L, 34M, and 34H are opened, the heat exchange medium flows from the heat source to the first adsorber 20, and heat is exchanged by the first adsorber 20 to return to the heat source.

  The second adsorber 22 is provided with a connecting pipe 30C for connecting two heat sources (medium temperature heat source 28M and high temperature heat source 28H). The connection pipe 30C branches on the heat source side corresponding to each heat source, and on-off valves 36M and 36H are provided at the branch portions. When the on-off valves 36M and 36H are opened, the heat exchange medium flows from the heat source to the second adsorber 22, heat is exchanged by the second adsorber 22, and returns to the heat source.

  Specific examples of the low temperature heat source 28L, the medium temperature heat source 28M, and the high temperature heat source 28H are not particularly limited, but the medium temperature heat source 28M is higher in temperature than the low temperature heat source 28L, and the high temperature heat source 28H is higher in temperature than the medium temperature heat source 28M. For example, the low-temperature heat source 28L can include a heat source of the refrigerant circulating in the pipe line 29L in order to cool the object to be cooled (to obtain cold heat). Examples of the medium temperature heat source 28M include a heat source of a heat exchange medium that flows through the conduit 29M in order to exchange heat with the outside outside (outdoor) to be cooled. As the high temperature heat source 28H, a heat source of a heat exchange medium flowing through the pipe line 29H in order to regenerate the heat pump 12 can be exemplified.

  In the heat pump 12, the evaporator / condenser 14, the first adsorber 20, the second adsorber 22, the first communication pipe 16, the second communication pipe 17, and the third communication pipe 24 are set to a pressure lower than the atmospheric pressure. A closed space is formed. This closed space is constituted by an evaporation / condensation chamber 14A, a first adsorption chamber 20A, a second adsorption chamber 22A, a first communication path 16A, a second communication path 17A, and a third communication path 24A. The closed space is a space through which steam (adsorbed material in a gas state) circulates, and is a space that is airtight at least under the use environment.

(3-way valve 18)
Next, a specific configuration of the three-way valve 18 will be described. 2, 3, and 4 show a specific configuration of the three-way valve 18.

  As shown in FIGS. 2, 3, and 4, the three-way valve 18 includes a housing 40, a valve member 50, a compression coil spring 70 (an example of an elastic member), and a drive unit 80. .

  The valve member 50 is a movable part in the three-way valve 18, and the entire valve member 50 is formed of a magnetic material. For example, ferritic stainless steel is used as the magnetic material. Specifically, the valve member 50 includes a valve stem 52 (shaft portion), a valve body 54 provided at the lower end of the valve stem 52, and a core portion 56 provided at the upper end of the valve stem 52. ing.

  The valve body 54 has a columnar shape. The valve body 54 is formed with a substantially L-shaped channel 55 in a side sectional view. One end portion 55 </ b> A of the flow channel 55 opens to the lower end surface (end surface of one axial direction) of the valve body 54, and the other end portion 55 </ b> B of the flow channel 55 opens sideways at the axial intermediate portion of the valve body 54. ing.

  The valve stem 52 extends in the vertical direction. For example, two spiral grooves 51 and 53 are formed on the outer periphery of the valve stem 52. The core portion 56 has a diameter larger than that of the valve stem 52. In addition, the valve member 50 should just be the core part 56 being comprised with the magnetic body.

  The housing 40 is made of a nonmagnetic material. As the nonmagnetic material, for example, austenitic stainless steel is used. Specifically, the housing 40 includes a valve box 42 that communicates with the first pipe 71 and the second pipe 72 of the first communication pipe 16, and a housing part 60 that houses the core part 56. .

  A flow path 49 having a port 49A (an example of a first port), a port 49B (an example of a second port), and a port 49C (an example of a third port) is formed inside the valve box 42. The port 49A opens downward on one end side in the rotation axis direction of the valve member 50 in the valve box 42. Thus, the port 49A communicates with one end 55A of the flow path 55 in the valve body 54.

  The port 49B is open to the side of the valve box 42 (direction intersecting the rotation axis direction of the valve member 50). The port 49C opens to the side opposite to the opening direction of the port 49B in the valve box 42 on the lower side of the port 49B. As described above, the port 49B and the port 49C are opened at different positions in the valve box 42 in the rotation direction of the valve member 50. Therefore, each of the port 49B and the port 49C can communicate with the other end portion 55B of the flow path 55 in the valve body 54 depending on the rotational position of the valve member 50.

  A second pipe 72 (an example of a connection part), a first pipe 71 (an example of a connection part), and a second communication pipe 17 (an example of a connection part) are connected to each of the ports 49A, 49B, and 49C. Thus, each of the ports 49A, 49B, 49C communicates with the first adsorption chamber 20A of the first adsorber 20, the evaporation / condensation chamber 14A of the evaporator / condenser 14, and the second adsorption chamber 22A of the second adsorber 22. doing. In addition, each of the ports 49A, 49B, 49C is connected to the second pipe 72, the first pipe 71, and the second communication pipe 17, so that it is closed inside the casing 40 including the valve box 42 and the accommodating portion 60. A space is formed. This closed space constitutes a part of the aforementioned closed space in the heat pump 12.

  As described above, the valve box 42 communicates with the first pipe 71 and the second pipe 72, and the first communication pipe 16 is configured by the valve box 42, the first pipe 71 and the second pipe 72. Further, a through hole 44 through which the valve rod 52 of the valve member 50 is inserted is formed in the upper portion of the valve box 42.

  The accommodating portion 60 includes a lower plate portion 62 joined to the top surface 45 of the valve box 42, a cylindrical portion 64 erected from the lower plate portion 62, and an upper plate portion 66 disposed at the upper end of the cylindrical portion 64. ,have. The lower plate portion 62 is provided with a seal member 68 that seals between the lower plate portion 62 and the top surface 45 of the valve box 42.

  The lower plate portion 62 is provided with a support portion 69 (bearing) that supports the valve rod 52. Specifically, the support portions 69 are formed in a pair of spherical shapes, and the support portions 69 are fitted into the spiral grooves 51 and 53 of the valve rod 52, respectively. It supports so that it can rotate in the spiral direction along the grooves 51 and 53. When the valve member 50 moves in the axial direction of the valve stem 52, the spherical support portions 69 move relative to each other in the spiral direction within the spiral grooves 51 and 53, whereby the valve member 50 rotates. As described above, in the three-way valve 18, the pair of support portions 69 and the spiral grooves 51 and 53 are configured as an example of a conversion mechanism that converts linear motion along the axial direction of the valve rod 52 of the valve member 50 into rotational motion. ing.

  In the present embodiment, the core portion 56 of the valve member 50 is accommodated in the accommodating portion 60, and the valve body 54 of the valve member 50 is accommodated in the valve box 42, so that the entire valve member 50 is a closed space. It is accommodated in a certain housing 40. In addition, the accommodating part 60 and the valve box 42 may each be configured by assembling a plurality of constituent members.

  The compression coil spring 70 is disposed between the upper plate portion 66 and the core portion 56 and presses the core portion 56 downward by an elastic force. Thereby, the valve member 50 is urged downward.

  The drive unit 80 is disposed outside the housing 40. Specifically, the drive unit 80 includes a case 82, a coil 84, and a core body 86. The case 82 includes a cylindrical portion 82A, a circular upper plate portion 82B disposed at the upper end of the cylindrical portion 82A, and a circular lower plate portion 82C disposed at the upper end of the cylindrical portion 82A. Have. A circular hole 82D through which the cylindrical portion 64 of the accommodating portion 60 is inserted is formed in the lower plate portion 82C.

  The core body 86 is formed in a columnar shape or a cylindrical shape. The core body 86 is disposed above the upper plate portion 66 in the case 82 and coaxially with the core portion 56.

  The coil 84 is formed in a cylindrical shape. The coil 84 is arranged in the case 82 so as to surround the cylindrical portion 64 and the core body 86 of the housing portion 60. When a current flows from the power source (not shown) to the coil 84, the core portion 56 is attracted to the core body 86 against the weight of the valve member 50 and the urging force of the compression coil spring 70. As a result, the valve member 50 rotates and rotates in the spiral direction along the spiral grooves 51 and 53, and the three-way valve 18 includes the first pipe 71 (evaporator / condenser 14) and the second pipe 72 (first adsorber). 20) is brought into a first communication state (see FIG. 2).

  On the other hand, when the driving unit 80 is not driven and the attractive force to the core body 86 does not act on the core part 56, the compression coil spring 70 pushes the core body 86 downward and the own weight acts on the valve member 50. Thereby, the valve member 50 is rotated in the spiral direction along the spiral grooves 51 and 53 while being lowered, and the three-way valve 18 is connected to the second pipe 72 (first adsorber 20) and the second communication pipe 17 (second adsorption). The second communication state communicating with the container 22) is established (see FIG. 3).

  As described above, in the three-way valve 18, the drive unit 80 linearly moves the valve member 50 by the magnetic force of the electromagnet configured by the core body 86 and the coil 84. This linear motion is converted into rotational motion by the support portion 69 and the spiral grooves 51 and 53, and the rotational position of the valve member 50 changes. Thereby, the ports 49A, 49B, and 49C to be communicated are switched.

  Further, the valve body 54 stops the valve member 50 at an intermediate position by executing PWM (pulse width modulation) control on the current flowing through the coil 84 of the drive unit 80. Thereby, the flow path 55 of the valve body 54 is closed by the inner wall of the flow path 49 in the valve box 42. By closing the flow path 55 of the valve body 54, the evaporation / condensation chamber 14A of the evaporator / condenser 14, the first adsorption chamber 20A of the first adsorber 20, and the second adsorption chamber 22A of the second adsorber 22 are obtained. In this state, communication is not performed (see FIG. 4).

(Cooling method)
Next, the production | generation method which produces | generates cold using the heat pump 12 of this embodiment is demonstrated. In the following, valves other than those specified as being open (except for the three-way valve 18) are closed.

  In order to generate cold using the heat pump 12, the cold generation process and the regeneration process are alternately performed as follows.

<Cold heat generation process>
In the cold heat generation process, first, the following cold heat generation step 1 is performed, and then the following cold heat generation step 2 is performed.

[Cold heat generation step 1]
In the cold heat generation step 1, as shown in FIG. 5, the on-off valve 32L is opened, and the heat exchange medium is moved from the low-temperature heat source 28L to the evaporator / condenser 14. Further, the on-off valve 34M is opened to move the heat exchange medium from the intermediate temperature heat source 28M to the first adsorber 20. Then, the three-way valve 18 is brought into the first communication state (the state shown in FIG. 2).

  As a result, the adsorbate evaporates in the evaporator / condenser 14 and is adsorbed by the first adsorber 20 as indicated by the arrow F1 in FIG. The adsorbate evaporated by the evaporator / condenser 14 is adsorbed by the first adsorber 20, whereby cold heat is generated in the evaporator / condenser 14.

[Cold heat generation step 2]
Next, cold heat generation step 2 is performed. In the cold heat generation step 2, first, as shown in FIG. 6, the on-off valves 32L and 34M are closed.

  Then, the on-off valve 34L is opened to move the heat exchange medium from the low-temperature heat source 28L to the first adsorber 20. Further, the on-off valve 36M is opened to move the heat exchange medium from the intermediate temperature heat source 28M to the second adsorber 22. Then, the three-way valve 18 is switched to the second communication state (the state shown in FIG. 3).

  As a result, the adsorbate evaporates in the first adsorber 20, and the adsorbate is adsorbed by the second adsorber 22 as shown by the arrow F2 in FIG.

  As described above, in the cold heat generation step 2, the first adsorber 20 is regenerated by evaporating the adsorbate with the first adsorber 20 and desorbing the adsorbate from the first adsorber 20. And cold energy is produced | generated using the desorption energy at the time of regeneration of the 1st adsorption device 20 at the time of adsorbate desorption.

<Regeneration process>
When the cold heat generation process is performed, particularly in the cold heat generation step 2, the adsorbate is adsorbed by the second adsorber 22, and therefore, regeneration is performed by performing the following first regeneration method or the following second regeneration method.

[First playback method]
The first regeneration method is a regeneration method that does not use the first adsorber 20. In the first regeneration method, as shown in FIG. 7, the on-off valve 32M is opened, and the heat exchange medium is moved from the intermediate temperature heat source 28M to the evaporator / condenser 14. Further, the on-off valve 36H is opened to move the heat exchange medium from the high temperature heat source 28H to the second adsorber 22. Then, the on-off valve 26 is opened.

  Thereby, the adsorbate of the second adsorber 22 is desorbed by receiving heat from the high temperature heat source 28H, and the second adsorber 22 is regenerated. The adsorbate adsorbed on the second adsorber 22 moves to the evaporator / condenser 14 and is condensed as indicated by an arrow F3 in FIG. At this time, the three-way valve 18 is switched to a non-communication state (the state shown in FIG. 4).

  The above is the first reproduction method. In the first regeneration method, the on-off valve 32L may be opened instead of the on-off valve 32M. Further, when opening the on-off valve 32L, the on-off valve 36M can be opened instead of the on-off valve 36H depending on the temperatures of the low temperature heat source 28L and the intermediate temperature heat source 28M.

[Second playback method]
The second regeneration method is a regeneration method using the first adsorber 20, and the regeneration step 1 and the regeneration step 2 are performed alternately. In performing the second regeneration method, the first adsorber 20 is substantially regenerated by removing the adsorbate in the above-described cold heat generation method, particularly in the cold heat generation step 2.

(Playback step 1)
In the regeneration step 1, as shown in FIG. 8, the on-off valve 34M is opened, and the heat exchange medium is moved from the intermediate temperature heat source 28M to the first adsorber 20. Further, the on-off valve 36H is opened, and the heat exchange medium is moved from the high temperature heat source 28H to the second adsorber 22. Then, the three-way valve 18 is switched to the second communication state (the state shown in FIG. 3).

  Thereby, the adsorbate of the second adsorber 22 is desorbed by receiving heat from the high temperature heat source 28H, and the second adsorber 22 is regenerated. The adsorbate adsorbed on the second adsorber 22 moves to the first adsorber 20 and is adsorbed.

(Reproduction step 2)
When the first adsorber 20 reaches the adsorption equilibrium, the regeneration step 2 is performed. In the regeneration step 2, as shown in FIG. 9, the on-off valve 32M is opened, and the heat exchange medium is moved from the intermediate temperature heat source 28M to the evaporator / condenser 14. Further, the on-off valve 34H is opened to move the heat exchange medium from the high-temperature heat source 28H to the first adsorber 20. Then, the three-way valve 18 is switched to the first communication state (the state shown in FIG. 2). In FIG. 9, the on-off valve 36H is also opened, but the on-off valve 36H may be closed.

  Thereby, the adsorbate of the first adsorber 20 is desorbed by receiving heat from the high-temperature heat source 28H, and the first adsorber 20 is regenerated. The adsorbate adsorbed on the first adsorber 20 moves to the evaporator / condenser 14 and is condensed.

  The above is the second reproduction method. In the second regeneration method, the second adsorber 22 can be regenerated even when the temperature of the high-temperature heat source 28H is lower than that in the first regeneration method. Compared to the second regeneration method, the first regeneration method does not repeat the adsorption and desorption of the adsorbate in the first adsorber 20, so that the total energy required for the regeneration of the second adsorber 22 is reduced and the efficiency is increased. Thus, the second adsorber 22 can be regenerated.

(Operational effect of this embodiment)
Next, the effect of this embodiment is demonstrated.

  According to the configuration of the present embodiment, as described above, in the cold heat generation step 1, the three-way valve 18 is brought into the first communication state (the state shown in FIG. 2). In the cold heat generation step 2, the three-way valve 18 is switched to the second communication state (the state shown in FIG. 3).

  Specifically, the drive member 80 linearly moves the valve member 50 housed inside the housing 40 that is a closed space by the magnetic force of the electromagnet from the outside of the housing 40. This linear motion is converted into rotational motion by the support portion 69 and the spiral grooves 51 and 53, and the rotational position of the valve member 50 changes. Thereby, the ports 49A, 49B, and 49C to be communicated are switched, and the three-way valve 18 is switched from the first communication state (the state shown in FIG. 2) to the second communication state (the state shown in FIG. 3).

  Here, as a valve driven using the driving force of the driving unit, there is a valve 100 (first comparative example) shown in FIG. Although the valve 100 shown in FIG. 10 is a two-way valve, it is common to the three-way valve 18 in that the drive unit linearly moves the valve member. Specifically, the valve 100 shown in FIG. 10 drives a valve member 105 having a valve body 104 with a cylinder 102. The bellows 106 provided on the valve body 104 seals the outside of the space set to the atmospheric pressure and the inside of the space set to a pressure lower than the atmospheric pressure (the portion A in FIG. 10 is the low pressure portion, and the portion B in FIG. Atmospheric pressure part). Therefore, in the valve 100, atmospheric pressure acts on the upper surface of the valve body 104, and it is necessary to drive the valve member 105 against the atmospheric pressure when the valve body 104 is opened. Thereby, the driving force for driving the valve member 105 is increased.

  On the other hand, in this embodiment, since the valve member 50 is accommodated in the housing 40 that is a closed space, atmospheric pressure does not act on the valve member 50. For this reason, the driving force for driving the valve member 50 can be reduced as compared with the case where the atmospheric pressure acts on a part of the valve member 105 like the valve 100.

  Further, in this embodiment, since the valve member 50 is accommodated inside the housing 40 that is a closed space, the wall (the top surface 45 and the lower plate portion 62) of the housing 40 can Sealing with the outside is ensured. Therefore, as compared with the case where the bellows 106 is used as in the valve 100, leakage between the inside and the outside of the closed space is suppressed with a simple and inexpensive configuration.

  Further, in the present embodiment, as described above, the ports 49A, 49B, and 49C to be communicated are converted by converting the linear motion of the valve member 50 by the drive unit 80 into rotational motion and changing the rotational position of the valve member 50. Switch. For this reason, compared with the case where the port which connects the valve member 50 by the position of a linear motion direction is switched without converting the linear motion of the valve member 50 into a rotational motion (2nd comparative example), it goes to the linear motion direction of the valve member 50. Even if the movement amount is small, the port to be communicated can be switched. Therefore, the stroke of the valve member 50 can be reduced as compared with the second comparative example described above.

  Furthermore, in this embodiment, since the ports 49A, 49B, and 49C are arranged in the rotation direction of the valve member 50, the stroke (linear motion) of the valve member 50 can be kept small even if the number of ports is increased. For this reason, the three-way valve 18 does not increase in size in the stroke direction (linear motion direction).

  In the present embodiment, as described above, the conversion mechanism that converts the linear motion along the axial direction of the valve stem 52 into the rotational motion includes the spiral grooves 51 and 53 and the pair of support portions 69. Thus, since the conversion mechanism is configured by the support structure of the valve member 50, the configuration of the three-way valve 18 can be simplified as compared with the case where the conversion mechanism is provided separately from the support structure of the valve member 50.

  In the present embodiment, the valve member 50 is moved downward by the urging force of the compression coil spring 70. The drive unit 80 moves the valve member 50 upward against the urging force of the compression coil spring 70. Thus, in this embodiment, since the drive part 80 should just drive the valve member 50 to one direction, compared with the case where the drive part 80 drives the valve member 50 to the up-and-down both directions, the structure of the drive part 80 is comprised. It can be simplified.

  Furthermore, in this embodiment, the housing | casing 40 which forms closed space is formed with the austenitic stainless steel as a nonmagnetic material. Thus, since the housing | casing 40 is a nonmagnetic material, it is suppressed that the magnetic force which acts on the valve member 50 from the drive part 80 is received. Further, since the casing 40 is formed of austenitic stainless steel as a nonmagnetic material, the casing 40 is not easily corroded even when water is used as the adsorbate, and the magnetic force that drives the valve member 50 by the drive unit 80 is reduced. Excellent magnetic field permeability.

(Modification)
Next, a modification of this embodiment will be described.
Although the heat pump 12 of this embodiment has the evaporator / condenser 14, the evaporator and the condenser may be configured separately.

  In the present embodiment, three ports (ports 49A, 49B, 49C) are provided in the valve box 42 of the housing 40, but four or more ports as connection ports may be provided. When four or more ports are provided, for example, the number of ports provided along the circumferential direction of the valve box 42 of the housing 40 (the rotation direction of the valve member 50) is increased. In addition, the port provided along the circumferential direction of the valve box 42 is arrange | positioned, for example at equal intervals or every 90 degree | times.

  In this embodiment, each of the ports 49A, 49B, 49C is connected to the first adsorber 20, the evaporator / condenser 14 and the second via the second pipe 72, the first pipe 71, and the second communication pipe 17, respectively. It was connected to each of the adsorbers 22. That is, each of the ports 49A, 49B, and 49C is indirectly connected to each of the first adsorber 20, the evaporator / condenser 14, and the second adsorber 22. However, the present invention is not limited to this, and the first adsorber 20, each of the evaporator / condenser 14 and the second adsorber 22 may be directly connected.

  In the present embodiment, the three-way valve 18 switches between a first communication state (state shown in FIG. 2), a second communication state (state shown in FIG. 3), and a non-communication state (state shown in FIG. 4). Although it was set as the structure, it is not restricted to this. For example, the three-way valve 18 does not enter the non-communication state (the state shown in FIG. 4), but switches between the first communication state (the state shown in FIG. 2) and the second communication state (the state shown in FIG. 3). It may be configured. In this case, for example, the second regeneration method is used as the above-described regeneration step.

  In the present embodiment, the three-way valve 18 has a first communication state in which the evaporator / condenser 14 and the first adsorber 20 are communicated, and a second communication state in which the first adsorber 20 and the second adsorber 22 are in communication. However, the present invention is not limited to this. For example, the three-way valve 18 includes a first communication state in which the evaporator / condenser 14 and the second adsorber 22 are communicated, and a second communication state in which the first adsorber 20 and the second adsorber 22 are communicated. It may be possible to switch. The three-way valve 18 is in a first communication state in which the evaporator / condenser 14 and the first adsorber 20 are communicated with each other and in a second communication state in which the evaporator / condenser 14 and the second adsorber 22 are communicated. It may be possible to switch.

  The reactor to which the port of the three-way valve 18 is connected (communication) includes a reactor (for example, an evaporator / condenser, an adsorber) that generates cold and hot heat, and a reactor (for example, an evaporator) that generates cold. , An adsorber) and a reactor (for example, a condenser, an adsorber, and a heat accumulator) that generate heat.

  Furthermore, the valve of this invention should just be the closed space in which a valve member is accommodated lower pressure than atmospheric pressure, and is not restricted to the case where it applies to an adsorption-type heat pump.

  In the present embodiment, the pair of support portions 69 and the spiral grooves 51 and 53 are configured as an example of a conversion mechanism. However, the present invention is not limited to this, and the conversion mechanism may be another mechanical element (for example, a cam). You may be comprised using.

  Moreover, in this embodiment, although the compression coil spring 70 was used as an example of an elastic member, it is not restricted to this. As an example of the elastic member, for example, another spring such as a tension coil spring or a leaf spring may be used. Moreover, as an elastic member, the thing formed with the resin material containing a metal material and rubber | gum can be used.

  In this embodiment, the valve member 50 is moved downward by the urging force of the compression coil spring 70, and the valve member 50 is driven upward by the driving force generated by the magnetic force of the drive unit 80. Not limited to this. For example, the valve member 50 may be moved upward by the urging force of the compression coil spring 70, the valve member 50 may be driven downward by the driving force generated by the magnetic force of the driving unit 80, and the valve member 50 may be moved downward. . Further, without using an elastic member such as the compression coil spring 70, the valve member 50 may be moved both up and down by the driving force generated by the magnetic force of the driving unit 80.

  The adsorber of the present embodiment is not limited to the configuration in which the adsorbate is adsorbed and desorbed by the adsorbent. For example, the system pressure is saturated by reacting with the adsorbate at a pressure equal to or lower than the saturated vapor pressure of the adsorbate. It may be a reactor capable of lowering below the vapor pressure. The reaction here includes physical adsorption, chemical adsorption, absorption, chemical reaction, and the like.

  The present invention is not limited to the above-described embodiment, and various modifications, changes, and improvements can be made without departing from the spirit of the present invention. For example, the modification examples described above may be appropriately combined.

12 Adsorption heat pump 14 Evaporation / condenser (an example of a reactor)
17 2nd communication pipe (an example of a connection part)
20 First adsorber (an example of a reactor)
22 Second adsorber (an example of a reactor)
40 housing 49A port (example of first port)
49B port (example of second port)
49C port (example of third port)
50 Valve members 51, 53 Spiral groove (an example of a change mechanism)
69 Supporting part (example of changing mechanism)
70 Compression coil spring (an example of a biasing member)
71 1st pipe (an example of a connection part)
72 Second pipe (an example of a connecting portion)
80 Drive unit

Claims (10)

A housing having three or more ports, in which a connection portion is connected to each of the three or more ports to form a closed space whose pressure is lower than the atmospheric pressure;
A valve member that is accommodated in the housing and is rotatably supported by the housing, and switches the port to communicate with the rotation position;
A drive unit that is disposed outside the housing and linearly moves the valve member by a magnetic force;
A conversion mechanism that converts a linear motion of the valve member by the drive unit into a rotational motion and changes a rotational position of the valve member;
With a valve. The valve according to claim 1, which is used in an adsorption heat pump,
Each of the three or more ports is directly or indirectly connected to each of three or more reactors that generate at least one of cold and / or hot heat, and the adsorbate circulates in the closed space. Item 2. The valve according to Item 1. The three or more ports include a first port, a second port, and a third port;
The first port opens on one end side in the rotation axis direction of the valve member in the housing,
The second port and the third port open in a direction crossing the rotation axis direction at different positions in the casing in the rotation direction of the valve member,
A flow path is formed in the valve member such that one end communicates with the first port and the other end communicates with one of the second port and the third port depending on the rotational position of the valve member. The valve according to claim 1 or 2. The valve according to claim 3, wherein the other end portion of the flow path is not communicated with either the second port or the third port depending on a rotational position of the valve member. The conversion mechanism is
The spherical support part which is provided in the said housing | casing, is fitted to the spiral groove formed in the outer periphery of the said valve member, and is supported rotatably in the spiral direction along this spiral groove. 5. The valve according to any one of 4. An elastic member that is housed in the housing and biases the valve member with an elastic force on one side in a rotation axis direction of the valve member;
The valve according to any one of claims 1 to 5, wherein the driving unit linearly moves the valve member in a direction opposite to a biasing direction of the elastic member against a biasing force of the elastic member. The valve according to claim 1, wherein the casing is made of a nonmagnetic material. The valve according to claim 7, wherein the casing is formed of austenitic stainless steel as the nonmagnetic material. Three or more reactors producing at least one of cold and hot,
3 or more ports, and each of the 3 or more ports is directly or indirectly connected to each of the 3 or more reactors to form a closed space whose pressure is lower than atmospheric pressure. A housing to be
A valve member that is accommodated in the housing and is rotatably supported by the housing, and switches the port to communicate with the rotation position;
A drive unit that is disposed outside the housing and linearly moves the valve member by a magnetic force;
A conversion mechanism that converts a linear motion of the valve member by the drive unit into a rotational motion and changes a rotational position of the valve member;
Adsorption heat pump. The three or more reactors are:
An evaporator for evaporating the adsorbate;
A first adsorber that adsorbs the adsorbate of the evaporator and generates cold heat in the evaporator;
A second adsorber that adsorbs the adsorbate adsorbed on the first adsorber and generates cold heat in the first adsorber;
Have
The three or more ports include a first port, a second port, and a third port;
The first port is connected to the first adsorber;
The second port is connected to the evaporator;
The third port is connected to the second adsorber;
The state of communicating the first port and the second port and the state of communicating the first port and the third port are changed by changing the rotational position of the valve member. Adsorption heat pump.

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