JP2017145992A - Absorption heat pump device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorption type heat pump device including a heat exchange part which efficiently conducts heat exchange between a solvent applied to an outer surface of a heat exchanger plate and a heat exchange fluid.SOLUTION: An absorption type heat pump device 100 includes a heat exchange part 42 including: flat-plate like heat exchange plates 43, each of which includes a meander shaped coolant passage 48 in which a coolant flows; and rotation application parts 44 which apply an absorbent for absorbing refrigerant vapor to outer surfaces 43a and 43b of the heat exchange plates 43.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an absorption heat pump apparatus.

  Conventionally, an absorption heat pump apparatus including a heat transfer plate and an application unit that applies a solvent to the outer surface of the heat transfer plate is known (see, for example, Patent Document 1).

  Patent Document 1 discloses an absorption heat pump apparatus including a box-shaped base body that stores a viscous substance and an absorber. The absorber of the absorption heat pump device described in Patent Document 1 is arranged in a substrate and cools a viscous substance applied to a coating surface, and a viscosity existing on the coating surface of the cooler. And an application part for spreading the substance in a film form. Further, in the absorber, the refrigerant that exchanges heat with the viscous substance applied to the application surface is supplied to the cooling chamber inside the cooler, and the refrigerant that has exchanged heat is recovered from the cooling chamber. It is configured. Note that Patent Document 1 does not disclose the structure of the cooling chamber in the cooler.

Japanese Patent No. 5370589

  However, since the structure of the cooling chamber is not taken into consideration in the above-mentioned Patent Document 1, even if the refrigerant is supplied to the cooling chamber, the refrigerant is discharged from the cooling chamber before reaching the wide range of the cooling chamber. It is thought that there is. In this case, heat exchange between the viscous material applied to the application surface of the cooler and the refrigerant is not efficiently performed. Therefore, an absorption heat pump device including a cooler capable of efficiently exchanging heat between the viscous material applied to the application surface of the cooler and the refrigerant is desired.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to efficiently exchange heat between the solvent applied to the outer surface of the heat transfer plate and the heat exchange fluid. It is providing an absorption-type heat pump apparatus provided with the heat exchange part which can be performed.

  In order to achieve the above object, an absorption heat pump device according to a first aspect of the present invention includes a flat plate heat transfer plate including a meandering heat exchange fluid passage in which a heat exchange fluid flows, and a refrigerant vapor. And a heat exchanging unit including a coating unit that coats an outer surface of the heat transfer plate with an absorption liquid that absorbs the solvent or a solvent made of a refrigerant.

  In the absorption heat pump device according to the first aspect of the present invention, as described above, the heat exchange fluid passage through which the heat exchange fluid flows is provided inside the heat transfer plate, and the heat exchange fluid passage is formed in a meandering shape. To do. Thus, the heat exchange fluid flows through the meandering heat exchange fluid flow path, so that the heat exchange fluid is sufficiently spread over a wide area of the heat transfer plate before the heat exchange fluid is recovered (discharged) from the heat transfer plate. Since it can be spread, heat exchange between the solvent applied to the outer surface of the heat transfer plate and the heat exchange fluid can be performed efficiently.

  In the absorption heat pump device according to the first aspect described above, preferably, the meandering heat exchange fluid flow path does not circulate the heat exchange fluid from above to below, and heats from the lateral direction or from below to above. The exchange fluid is formed to circulate.

  With this configuration, the heat exchange fluid flows from the lower side to the upper side in the heat exchange fluid flow path, so that the solvent flow is applied to the outer surface of the heat transfer plate and flows downward from the upper side due to its own weight. And the flow of the heat exchange fluid can be opposed to each other. Thereby, heat exchange between the solvent and the heat exchange fluid can be performed efficiently. In addition, the meandering heat exchange fluid channel is not provided with a channel through which the heat exchange fluid flows from above to below, so that the meandering channel and the channel from the top to the bottom of the meandering shape. Heat transfer to the boundary part (L-shaped corner part) with the flow path or the boundary part between the flow path from the bottom to the top and the flow path from the top to the bottom (the curved part near the top of the inverted U-shape) It can suppress that the air which hardly contributes to stays. As a result, heat exchange between the solvent applied to the outer surface of the heat transfer plate and the heat exchange fluid can be performed more efficiently in the heat exchange section.

  In this case, preferably, the plurality of heat transfer plates are arranged side by side at a predetermined interval, and are arranged below the plurality of heat transfer plates so as to extend in the arrangement direction of the plurality of heat transfer plates. A common heat exchange fluid supply pipe for supplying a heat exchange fluid to the heat exchange fluid flow path of the heat transfer plate, and a plurality of heat transfer plates arranged so as to extend in the arrangement direction of the plurality of heat transfer plates, And a common heat exchange fluid recovery pipe for recovering the heat exchange fluid flowing through the heat exchange fluid flow path of the heat transfer plate from above.

  With this configuration, the heat exchange fluid is supplied from below to the heat exchange fluid flow path of the heat transfer plate, and the heat exchange fluid that has flowed through the heat exchange fluid flow path from above the heat transfer plate is recovered. In the exchange fluid channel, the heat exchange fluid can be easily circulated in the direction from the bottom to the top. In addition, by providing the heat exchange unit with a common heat exchange fluid supply pipe and heat exchange fluid recovery pipe for a plurality of heat transfer plates, it is possible to suppress an increase in the number of parts in the heat exchange unit, and to Heat exchange between the solvent applied to the outer surface of the heat transfer plate and the heat exchange fluid by the heat plate can be performed in a wider range.

  In the absorption heat pump device according to the first aspect, preferably, the application unit includes a rotation application unit that applies the solvent while rotating along the outer surface of the heat transfer plate, and the heat transfer plate includes the rotation application unit. The shaft for rotation has a hole through which the heat exchange fluid flow path meanders to avoid the hole.

  According to this structure, even if the heat transfer plate has holes, the heat exchange fluid is circulated through a wide area of the heat transfer plate including the vicinity of the holes and applied to the outer surface of the heat transfer plate. The heat exchange between the solvent and the heat exchange fluid can be sufficiently performed.

  In the absorption heat pump device according to the first aspect, preferably, the heat transfer plate includes a plate-like main body portion having a meandering groove, and a lid portion attached to the main body portion so as to cover the meandering groove. A space surrounded by the groove and the lid portion forms a meandering heat exchange fluid flow path.

  If comprised in this way, a meander-shaped heat exchange fluid flow path can be easily formed in a heat exchanger plate.

  An absorption heat pump apparatus according to a second aspect of the present invention is an absorption heat pump apparatus that absorbs refrigerant vapor with an absorbing liquid, and an evaporator that evaporates the refrigerant and the refrigerant vapor evaporated by the evaporator are absorbed into the absorbing liquid. And an absorber or an evaporator, wherein the absorber or the evaporator has a flat plate-shaped heat transfer plate including a meandering heat exchange fluid flow path through which the heat exchange fluid flows, and an absorption liquid that absorbs refrigerant vapor, or And a heat exchanging part having a coating part for applying a solvent made of a refrigerant to the outer surface of the heat transfer plate.

  In the absorption heat pump device according to the second aspect of the present invention, as described above, in the heat exchange part of the absorber or the evaporator, the heat exchange fluid flow path through which the heat exchange fluid flows is provided inside the heat transfer plate. The heat exchange fluid flow path is formed in a meandering shape. Thereby, similarly to the absorption heat pump apparatus in the first aspect, heat exchange between the solvent applied to the outer surface of the heat transfer plate and the heat exchange fluid can be performed efficiently.

  In the absorption heat pump device according to the first aspect, the following configuration is also conceivable.

(Additional item 1)
That is, in the absorption heat pump device in which the heat exchange fluid flow path meanders so as to avoid the hole of the heat transfer plate, the heat exchange fluid flow in the meandering heat exchange fluid flow path from the upper side to the lower side. Without branching, it is meandering so as to avoid the hole by branching into a first branch and a second branch that are configured such that the heat exchange fluid flows in the lateral direction or from below to above.

It is the figure which showed the whole structure of the absorption heat pump apparatus in 1st Embodiment of this invention. It is the perspective view which showed the internal structure of the absorber in 1st Embodiment of this invention. It is the expansion perspective view which showed the structure of the heat exchange part of the absorber in 1st Embodiment of this invention. It is the disassembled perspective view which showed the heat exchanger plate of the absorber in 1st Embodiment of this invention. FIG. 5 is a cross-sectional view taken along line 300-300 in FIG. 4. It is the figure which showed the whole structure of the absorption heat pump apparatus in 2nd Embodiment of this invention. It is the perspective view which showed the internal structure of the evaporator in 2nd Embodiment of this invention. It is the expansion perspective view which showed the structure of the heat exchange part of the evaporator in 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
First, with reference to FIGS. 1-5, the structure of the absorption heat pump apparatus 100 by 1st Embodiment of this invention is demonstrated.

(Configuration of absorption heat pump device)
In the absorption heat pump apparatus 100 according to the first embodiment of the present invention, a passenger car including an engine 90 using water as a refrigerant and a lithium bromide (LiBr) aqueous solution as an absorption liquid (an example of a solvent). And it is comprised so that it may mount in vehicles (not shown), such as a bus.

  As shown in FIG. 1, the absorption heat pump apparatus 100 includes a regenerator 10 (within a two-dot chain line), a condenser 20, an evaporator 30, and an absorber 40. The regenerator 10 has a role of separating refrigerant vapor (high temperature steam) from the absorbing liquid. The condenser 20 has a role of condensing (liquefying) the refrigerant vapor during the cooling operation. The evaporator 30 has a role of evaporating (vaporizing) the refrigerant that has condensed into water during the cooling operation under low-temperature and low-pressure conditions. The absorber 40 has a role of absorbing the refrigerant vapor (low-temperature steam) vaporized by the evaporator 30 in the absorbing liquid supplied in a concentrated liquid state.

  The regenerator 10 includes a heating unit 11 that heats the absorption liquid and a gas-liquid separation unit 12 that separates the refrigerant vapor from the heated absorption liquid. In the heating unit 11, the hot exhaust gas flowing through the exhaust pipe 91 from the engine 90 and the absorbing liquid are subjected to heat exchange. The exhaust pipe 91 includes an exhaust heat supply path 91a passing through the heating unit 11 and a bypass 91b, and a valve 92 is provided in the exhaust heat supply path 91a. When the valve 92 is opened during the cooling operation and the heating operation, a part of the exhaust gas from the engine 90 is circulated to the heating unit 11 via the exhaust heat supply path 91a.

  Further, the absorption heat pump device 100 includes a circulation passage 51 including absorption liquid circulation passages 51a and 51b, refrigerant vapor passages 52a, 52b and 53, a refrigerant passage 54, absorption liquid passages 55 and 56, and a refrigerant supply passage 57. And 58. The circulation passage 51 has a role of circulating the absorption liquid between the heating unit 11 and the gas-liquid separation unit 12, and a pump 71 is provided in the absorption liquid circulation path 51a. The refrigerant vapor passage 52a has a role of supplying the refrigerant vapor from the gas-liquid separator 12 to the condenser 20 during the cooling operation. The refrigerant vapor passage 52b has a role of causing the refrigerant vapor separated by the gas-liquid separation unit 12 to flow into the evaporator 30 during the heating operation. Note that a connection portion between the refrigerant vapor passage 52b and the refrigerant vapor passage 53 is a three-way valve capable of switching between closing the refrigerant vapor passage 52b during the cooling operation and opening the refrigerant vapor passage 52b during the heating operation. 64 is provided. A valve 65 is provided in the refrigerant vapor passage 52a. The valve 65 serves to block the refrigerant vapor separated by the gas-liquid separation unit 12 from flowing into the condenser 20 during the heating operation. The refrigerant passage 54 is provided with a valve 66.

  The absorption liquid passage 55 has a role of supplying the absorption liquid (concentrated liquid) from the regenerator 10 to the absorber 40 according to the opening / closing operation of the valve 61. The absorption liquid passage 56 has a role of supplying the regenerator 10 with an absorption liquid (dilute liquid) in which the refrigerant vapor is absorbed in the absorber 40 when the pump 72 and the valve 62 are linked. The refrigerant supply path 57 has a role of supplying the refrigerant (water) stored in the evaporator 30 to the regenerator 10 by the pump 73 and the valve 63 being interlocked during the heating operation. The refrigerant supply path 58 has a role of supplying condensed water stored in the condenser 20 to the absorber 40 in accordance with an opening / closing operation of the valve 67 for the purpose of preventing crystallization of the absorbing liquid. Further, in the heat exchanger 59, heat exchange between the absorbing liquids flowing through the absorbing liquid passage 55 and the absorbing liquid passage 56 is performed.

  Moreover, the absorption heat pump apparatus 100 includes a cooling water circuit 80 that is driven during cooling operation. The cooling water circuit 80 is used for cooling the refrigerant vapor in the condenser 20 and for removing the heat of absorption generated when the refrigerant is absorbed in the absorption liquid (concentrated liquid) in the absorber 40. Specifically, the cooling water circuit 80 is disposed in the cooling water circulation path 81 through which the cooling water (an example of a heat exchange fluid) flows, the pump 82, the heat exchange unit 83 disposed in the condenser 20, and the absorber 40. The heat exchange part 42 and the heat radiating part 84 are included. In the heat radiating section 84, the cooling water flowing through the heat exchanging section 84a is cooled (heat radiated) by the air (outside air) blown by the blower 84b. The cooling water circulation path 81 includes a cooling water passage 81 a that supplies cooling water to the absorber 40 and a cooling water passage 81 b that collects cooling water from the absorber 40.

  The condenser 20 includes a container 20a in which a refrigerant is stored, and a heat exchange unit 83 that is installed in the container 20a and through which cooling water flows. In the condenser 20, heat is exchanged between the cooling water flowing through the heat exchange unit 83 and the refrigerant vapor from the gas-liquid separation unit 12. As a result, the refrigerant vapor is condensed into a liquid refrigerant.

  The evaporator 30 has a refrigerant storage part 31a in which water (refrigerant) is stored, a container 31 that holds the inside in a vacuum state of 1 kPa or less in absolute pressure, a heat exchange part 32 installed inside the container 31, and And an injector 33. Outside the evaporator 30, a pump 35 is provided in a passage 34 that connects the refrigerant reservoir 31 a and the injector 33. As a result, the refrigerant (water) in the refrigerant storage unit 31 a is pumped up by the pump 35 and sprayed from the injector 33 toward the heat exchange unit 32. Therefore, during the cooling operation, the suction air in the vehicle circulated by the blower 36 is cooled when passing through the heat exchanging unit 32 due to the latent heat of evaporation obtained when the sprayed refrigerant (water) becomes the refrigerant vapor (low-temperature steam). Is done.

  Here, in 1st Embodiment, the absorber 40 which absorbs refrigerant | coolant vapor | steam (low-temperature water vapor | steam) in an absorption liquid (LiBr aqueous solution) is comprised as follows.

(Absorber structure)
As shown in FIGS. 1 and 2, the absorber 40 is disposed in a container 41 kept in a vacuum state (absolute pressure of 1 kPa or less), and the container 41 performs heat exchange between the absorbing liquid and the refrigerant vapor. A heat exchanging unit 42. The container 41 is formed with a liquid reservoir 41a for mainly storing the absorbing liquid on the Z1 side (downward) in the vertical direction (Z-axis direction).

  As shown in FIG. 2, the heat exchanging units 42 are arranged in the X-axis direction, and are arranged in a region between a plurality of (5) flat plate-like heat transfer plates 43 and the adjacent heat transfer plates 43. The four rotation application units 44, a cooling water supply pipe 45 a that supplies cooling water to the heat transfer plate 43, and a cooling water recovery pipe 45 b that recovers cooling water from the heat transfer plate 43 are provided. The rotation application unit 44 has a role of applying the absorbing liquid to the outer surface 43a on the X2 side and the outer surface 43b on the X1 side (see FIG. 3) of the heat transfer plate 43. The rotation application unit 44 is an example of the “application unit” in the claims. The cooling water supply pipe 45a and the cooling water recovery pipe 45b are examples of the “heat exchange fluid supply pipe” and the “heat exchange fluid recovery pipe” in the claims, respectively.

  Further, the lower portion on the Z1 side of the heat transfer plate 43 and the cooling water supply pipe 45a are placed in the liquid reservoir 41a of the container 41, so that they are immersed in the absorbing liquid. In addition, in a state where the rotation application unit 44 is rotated so as to extend in the Z-axis direction, the lower portion on the Z1 side of the rotation application unit 44 is immersed in the absorbing liquid.

  As shown in FIGS. 3 and 4, a hole 43c through which a rotating shaft 49a, which will be described later, passes is formed at the center of the heat transfer plate 43.

  Each of the plurality of heat transfer plates 43 includes an aluminum main body 46 and an aluminum lid 47 attached to the X1 side of the main body 46 by brazing or the like. In the center of the main body 46, a hole 46a that constitutes a part of the hole 43c is formed. Similarly, a hole 47a constituting a part of the hole 43c is formed at the center of the lid 47.

  Further, as shown in FIG. 4, the surface (outer surface 43b) on the X2 side of the main body 46 is formed in a flat surface along the YZ plane. Further, the surface on the X1 side (outer surface 43a) and the surface on the X2 side of the lid portion 47 are both formed into a flat surface along the YZ plane.

  Here, in the first embodiment, a meandering groove 46 b that is recessed in the X2 side and formed in a meandering shape is formed on the surface of the main body portion 46 on the X1 side. The meandering groove 46b is formed so as to extend from the Z1 side bottom (the bottom 43d of the heat transfer plate 43) of the main body 46 to the Z2 side (upper) top (the top 43e of the heat transfer plate 43). Thus, a meandering cooling water flow path 48 through which cooling water flows is constituted by a space surrounded by the meandering groove 46 b and the lid portion 47 attached to the X1 side of the main body portion 46. The cooling water channel 48 is an example of the “heat exchange fluid channel” in the claims.

  Specifically, as shown in FIG. 5, the cooling water channel 48 includes a lower channel 48a, branch channels 48b and 48c branched from the lower channel 48a, a branch channel 48b, and a branch channel 48c. The upper flow path 48d that merges is formed. The lower channel 48a, the branch channels 48b and 48c, and the upper channel 48d are formed in a meandering shape.

  More specifically, the lower flow path 48a extends in the Z2 direction (upward) from an opening portion 48e formed in the bottom portion 43d on the Z1 side of the heat transfer plate 43 and is folded back in an L shape. 43 extends in the Y-axis direction toward one direction (Y1 direction) in the horizontal direction (Y-axis direction). The lower flow path 48a is folded back in a U shape in the Z2 direction and extends in the Y-axis direction to the vicinity of the other end (Y2 side) of the heat transfer plate 43 in the Y-axis direction. The lower flow path 48a is folded back in a U shape toward the Z2 direction and extends in the Y-axis direction to the vicinity of the end of the heat transfer plate 43 on the Y1 side. The lower channel 48a is folded back in an L shape and extends in the Z2 direction.

  The branch channel 48b is folded back in an L shape from the Z2 side end of the lower channel 48a extending in the Z2 direction and extends in the Y-axis direction to the vicinity of the Y1 side of the hole 43c. The branch channel 48b is folded in a U shape in the Z2 direction and extends in the Y-axis direction to the vicinity of the end portion on the Y1 side of the heat transfer plate 43. The branch flow path 48b is folded in a U shape in the Z2 direction and extends in the Y-axis direction to the vicinity of the end of the heat transfer plate 43 on the Y2 side. The branch channel 48b is connected to the upper channel 48d.

  The branch channel 48c branches from the vicinity of the end portion on the Z1 side of the lower channel 48a extending in the Z2 direction and extends in the Y-axis direction to the vicinity of the end portion on the Y2 side of the heat transfer plate 43. The branch flow path 48c is folded back in a U shape in the Z2 direction and extends in the Y-axis direction to the vicinity of the Y2 side of the hole 43c. The branch flow path 48c is folded in a U shape in the Z2 direction and extends in the Y-axis direction to the vicinity of the end of the heat transfer plate 43 on the Y2 side. The branch channel 48c is connected to the Z2 side end of the upper channel 48d.

  The upper channel 48d extends in the Z2 direction from the Z2 side end of the branch channel 48c. In addition, the branch flow path 48b is connected in the part extended toward this Z2 direction. The upper flow path 48d is folded in a U shape in the Z2 direction and extends in the Y-axis direction to the vicinity of the end portion on the Y1 side of the heat transfer plate 43. The upper flow path 48d is folded in a U shape in the Z2 direction and extends in the Y-axis direction to the vicinity of the end portion on the Y2 side of the heat transfer plate 43. The upper flow path 48d is folded in a U shape in the Z2 direction and extends in the Y-axis direction to the vicinity of the center of the heat transfer plate 43. The upper flow path 48d is folded in an L shape and extends to the opening 48f formed in the top portion 43e on the Z2 side of the heat transfer plate 43.

  As a result, the cooling water channel 48 is formed in a meandering shape so that the cooling water is distributed over substantially the entire surface of the heat transfer plate 43 by the meandering lower channel 48a, branch channels 48b and 48c, and upper channel 48d. Yes. Further, the cooling water flow path 48 meanders so as to avoid the hole 43c in the branched flow paths 48b and 48c.

  As shown in FIGS. 2 and 3, the cooling water supply pipe 45 a is arranged below the bottom portion 43 d on the Z1 side of the heat transfer plate 43 so as to extend in the X-axis direction that is the arrangement direction of the plurality of heat transfer plates 43. Has been. The heat transfer plate 43 is fixed to the cooling water supply pipe 45a in a state where the inside of the pipe through which the cooling water of the cooling water supply pipe 45a flows communicates with the opening 48e on the Z1 side in each of the plurality of heat transfer plates 43. Yes. Thereby, the cooling water supply pipe 45 a is provided in common to the plurality of heat transfer plates 43, and is configured to be able to supply cooling water to each of the heat transfer plates 43.

  Similarly, the cooling water recovery pipe 45b is disposed above the top portion 43e on the Z2 side of the heat transfer plate 43 so as to extend in the X-axis direction. The heat transfer plate 43 is fixed to the cooling water recovery pipe 45b in a state where the inside of the pipe through which the cooling water flows through the cooling water recovery pipe 45b communicates with the Z2 side opening 48f in each of the plurality of heat transfer plates 43. Yes. Thereby, the cooling water recovery pipe 45b is provided in common to the plurality of heat transfer plates 43, and is configured to be able to recover the cooling water from each of the heat transfer plates 43.

  Further, the plurality of heat transfer plates 43 are fixedly installed in the container 41 of the absorber 40 by being fixed while being sandwiched between the cooling water supply pipe 45a and the cooling water recovery pipe 45b.

  As shown in FIG. 1, the cooling water supply pipe 45a is connected to the cooling water passage 81a of the cooling water circuit 80, and the cooling water of the cooling water passage 81a is supplied. The cooling water recovery pipe 45b is connected to the cooling water passage 81b of the cooling water circuit 80, and the cooling water recovered from the heat transfer plate 43 is recovered to the cooling water passage 81b.

  Thereby, the circulation of the cooling water in the cooling water channel 48 of the absorber 40 is as follows. That is, as shown in FIG. 5, the cooling water supplied from the cooling water supply pipe 45 a (see FIG. 2) of the absorber 40 flows from the opening 43 e on the Z1 side of the heat transfer plate 43 into the cooling water flow path 48. Into the lower flow path 48a. And the cooling water which flowed into the lower flow path 48a distribute | circulates the lower flow path 48a, meandering laterally and upward. Thereafter, the cooling water flowing through the lower flow path 48a is divided into branch flow paths 48b and 48c, and flows through the branch flow paths 48b and 48c while meandering in the lateral direction and upward so as to avoid the hole 43c. And the cooling water which distribute | circulated the branch flow paths 48b and 48c merges in the upper flow path 48d, and distribute | circulates the upper flow path 48d, meandering laterally and upward. Finally, the cooling water that has reached the upper end on the Z2 side of the upper flow path 48d is recovered from the opening 43f on the Z2 side of the heat transfer plate 43 into the cooling water recovery pipe 45b.

  As a result, the meandering cooling water flow path 48 is formed so that the cooling water does not flow from the upper side to the lower side but flows from the lateral direction or the lower side to the upper side.

  In addition, the heat exchanging unit 42 further includes a motor 49 that rotates the four spin coating units 44 around the rotation axis A in the direction of arrow R as shown in FIG. A rotation shaft 49 a is connected to the motor 49. As shown in FIG. 3, the rotation shaft 49 a extends in the X-axis direction from the X1 direction toward the X2 direction so as to penetrate the hole portions 43 c of the plurality of heat transfer plates 43. The rotation application unit 44 has a pair of brush members 44a attached to the rotation shaft 49a at approximately 180 ° intervals. The pair of brush members 44a includes an arm portion 44b extending radially outward from the rotation shaft 49a and a plurality of brushes 44c planted on the arm portion 44b. The brush 44c is planted on the arm portion 44b so as to extend in the X2 direction toward the outer surface 43a of the heat transfer plate 43, and is planted so as to extend in the X1 direction toward the outer surface 43b.

  Next, operation | movement of the absorption heat pump apparatus 100 in 1st Embodiment is demonstrated.

(Operation during cooling operation)
During the cooling operation of the absorption heat pump device 100, as shown in FIG. 1, the pump 71 is started with the valves 61 and 62 closed, and the absorbing liquid is circulated through the circulation passage 51. When the refrigerant vapor heated by the heating unit 11 and separated by the gas-liquid separation unit 12 reaches a predetermined temperature, the valves 61 and 62 are opened and the pump 72 is started. Thereby, the concentrated liquid of the absorbent stored in the gas-liquid separator 12 is supplied to the liquid reservoir 41 a of the absorber 40 through the absorbent liquid passage 55. Further, the three-way valve 64 is switched to the side where the gas-liquid separator 12 and the condenser 20 are communicated (the refrigerant vapor flows through the refrigerant vapor passage 52a), and the refrigerant vapor condensed by the condenser 20 is transferred to the evaporator 30. The air in the vehicle is cooled via the heat exchanging unit 32. Then, the refrigerant vapor evaporated in the heat exchanging section 32 in the container 31 is sucked into the absorber 40. Furthermore, the cooling water circuit 80 is driven by driving the pump 82 and the blower 84b of the cooling water circuit 80.

  Here, in the absorber 40, as shown in FIGS. 2 and 3, the motor 49 is driven so that the brush member 44 a of each rotation application portion 44 extends along the outer surfaces 43 a and 43 b of the heat transfer plate 43. Is rotated in the direction of arrow R. As a result, the absorption liquid stored in the liquid reservoir 41 a is applied to the outer surfaces 43 a and 43 b of the heat transfer plate 43. The applied absorbing liquid absorbs the refrigerant vapor and rises in temperature while being diluted, and flows down from the upper side to the lower side on the outer surfaces 43a and 43b by its own weight. At this time, the absorption heat generated when the refrigerant vapor is absorbed by the applied absorption liquid is absorbed by the cooling water flowing through the cooling water flow path 48 formed over substantially the entire surface of the heat transfer plate 43. The cooling water flows through the cooling water channel 48 so as to face the absorption liquid from below to above, so that heat exchange between the absorption liquid and the cooling water is efficiently performed. Therefore, since the temperature of the applied absorbing liquid is kept at a low temperature, further absorption of the refrigerant vapor into the applied absorbing liquid is promoted. Then, the absorbing liquid becomes a dilute liquid and falls into the liquid reservoir 41a. The absorption liquid that has fallen into the liquid reservoir 41a is applied again to the outer surfaces 43a and 43b of the heat transfer plate 43 by the rotation application section 44, or flows through the absorption liquid passage 55 as shown in FIG. Returned to the circulation passage 51.

(Operation during heating operation)
During the heating operation of the absorption heat pump apparatus 100, as shown in FIG. 1, the valves 61 and 62 are always closed, and the absorber 40 is not used. The three-way valve 64 is switched to a flow path (flow path through which high-temperature steam flows through the refrigerant vapor passage 52b) connecting the gas-liquid separation unit 12 and the evaporator 30, and the valves 65 and 66 are closed and the condenser 20 is closed. Is disconnected from the cycle. Then, immediately after the start of operation, the temperature of the absorption liquid is increased by circulating the circulation passage 51, and the high-temperature steam separated by the gas-liquid separation unit 12 flows into the evaporator 30 (acting as a condenser). Thereby, the air in the vehicle is warmed through the heat exchange unit 32. Further, the condensed water exchanged by the evaporator 30 is returned to the circulation passage 51 through the refrigerant supply passage 57 by the cooperation of the pump 73 and the valve 63, thereby forming a heating cycle.

(Effect of 1st Embodiment)
In the first embodiment, the following effects can be obtained.

  In the first embodiment, a cooling water channel 48 through which cooling water flows is provided inside the heat transfer plate 43, and the cooling water channel 48 is formed in a meandering shape. Thereby, the cooling water flows through the meandering cooling water flow path 48, so that the cooling water can sufficiently flow through the wide range of the heat transfer plate 43 before the cooling water is recovered from the heat transfer plate 43. Therefore, heat exchange between the absorbing liquid applied to the outer surfaces 43a and 43b of the heat transfer plate 43 and the cooling water can be performed efficiently.

  In the first embodiment, since the cooling water flow path 48 is designed so that the flow path area is reduced, the flow rate of the cooling water can be easily increased, so that the heat exchange efficiency between the absorbing liquid and the cooling water is increased. Can be improved easily.

  In the first embodiment, the heat transfer plate 43 of the absorption heat pump apparatus 100 is configured so that the cooling water flows from the lower side (Z1 direction) to the upper side (Z2 direction) in the cooling water flow channel 48. Thereby, the flow of the absorption liquid which is applied to the outer surfaces 43a and 43b of the heat transfer plate 43 and flows down from the upper side to the lower side by its own weight can be opposed to the flow of the cooling water. As a result, heat exchange between the absorbing liquid and the cooling water can be performed efficiently. Further, by not providing the heat transfer plate 43 with a flow path through which the cooling water flows from the upper side to the lower side in the meandering cooling water flow path 48, the horizontal direction flow path and the upper side to the lower side of the meandering shape. On the boundary part (L-shaped corner part) with the flow path that goes to, or on the boundary part (curved part near the upper end of the inverted U-shape) between the flow path that goes from the bottom to the top and the flow path that goes from the top to the bottom It is possible to suppress the retention of air that hardly contributes to heat transfer. As a result, in the heat exchange part 42, heat exchange between the absorbing liquid applied to the outer surfaces 43a and 43b of the heat transfer plate 43 and the cooling water can be performed more efficiently.

  In the first embodiment, a common cooling water supply pipe 45 a that supplies cooling water to the cooling water flow paths 48 of the plurality of heat transfer plates 43 from below is provided with a plurality of heat transfer plates below the plurality of heat transfer plates 43. It arrange | positions so that it may extend in the arrangement | sequence direction (X-axis direction) of 43. In addition, a common cooling water recovery pipe 45 b that recovers the cooling water that has flowed through the cooling water flow paths 48 of the plurality of heat transfer plates 43 from above is arranged above the plurality of heat transfer plates 43 in the arrangement direction of the plurality of heat transfer plates 43. It arrange | positions so that it may extend. Thereby, the cooling water is supplied from below to the cooling water flow path 48 of the heat transfer plate 43, and the cooling water flowing through the cooling water flow path 48 is recovered from above the heat transfer plate 43. The cooling water can be easily circulated in the direction from the top to the top. In addition, by providing the heat exchange unit 42 with a common cooling water supply pipe 45a and cooling water recovery pipe 45b for the plurality of heat transfer plates 43, an increase in the number of parts in the heat exchange unit 42 can be suppressed, The heat exchange between the absorbing liquid applied to the outer surfaces 43a and 43b of the heat transfer plate 43 and the cooling water can be performed in a wider range by the plurality of heat transfer plates 43.

  Moreover, in 1st Embodiment, even if it is the heat-transfer plate 43 in which the hole 43c was formed by meandering the cooling water flow path 48 so that the hole 43c may be avoided, the heat-transfer plate containing the hole 43c vicinity The cooling water can be circulated through a wide range of 43, and the heat exchange between the absorbing liquid applied to the outer surfaces 43a and 43b of the heat transfer plate 43 and the cooling water can be sufficiently performed.

  In the first embodiment, the meandering cooling water passage 48 is configured by the space surrounded by the meandering groove 46 b and the lid portion 47, so that the meandering cooling water passage 48 can be easily provided on the heat transfer plate 43. Can be formed.

  Further, in the first embodiment, the absorbing liquid is reliably disposed on the outer surfaces 43 a and 43 b of the heat transfer plate 43 by applying the absorbing liquid to the outer surfaces 43 a and 43 b of the heat transfer plate 43 by the rotation applying unit 44. Therefore, even when the absorption heat pump device 100 is mounted on a vehicle in which vibration or inclination occurs, the area (heat transfer area) in which heat exchange between the absorbing liquid and the cooling water is performed is ensured. Can be secured.

[Second Embodiment]
The second embodiment will be described with reference to FIGS. In the second embodiment, unlike the first embodiment, an example in which the same configuration (structure) as the absorber 40 of the first embodiment is applied to the evaporator 230 will be described.

  As shown in FIG. 6, the absorption heat pump apparatus 200 according to the second embodiment of the present invention includes an evaporator 230 instead of the evaporator 30 (see FIG. 1) used in the first embodiment.

(Evaporator structure)
As shown in FIG. 7, the evaporator 230 is disposed in the container 231, and water (an example of a solvent) as a refrigerant and circulating water for air conditioning (an example of a heat exchange fluid) exchange heat. A heat exchanging unit 232 to perform. The container 231 is formed with a liquid reservoir 231a for storing water on the Z1 side (downward).

  The heat exchanging unit 232 includes a plurality of (five) flat disc-shaped heat transfer plates 233 in which holes 233c are formed, and four spin coating units 234 arranged in a region between adjacent heat transfer plates 233. A circulating water supply pipe 235a for supplying circulating water to the heat transfer plate 233, and a circulating water recovery pipe 235b for recovering the circulating water from the heat transfer plate 233. The spin coating unit 234 is an example of the “coating unit” in the claims. The circulating water supply pipe 235a and the circulating water recovery pipe 235b are examples of the “heat exchange fluid supply pipe” and the “heat exchange fluid recovery pipe” in the claims, respectively.

  Here, in the second embodiment, as shown in FIG. 8, a meandering circulating water flow path 238 is formed in the heat transfer plate 233, similarly to the heat transfer plate 43 of the first embodiment. The meandering circulating water flow path 238 is formed from the upper side to the lower side from the opening 238e formed in the bottom portion 233d on the Z1 side of the heat transfer plate 233 toward the opening 238f formed in the top portion 233e on the Z2 side (upper side). The circulating water circulates while meandering from the lateral direction or from below to above without circulating the circulating water. The circulating water channel 238 is an example of the “heat exchange fluid channel” in the claims.

  As shown in FIGS. 7 and 8, the circulating water supply pipe 235 a is disposed below the bottom portion 233 d on the Z1 side of the heat transfer plate 233. The inside of the circulating water supply pipe 235a through which the circulating water circulates communicates with the Z1 side opening 238e of each of the plurality of heat transfer plates 233. Similarly, the circulating water recovery pipe 235b is disposed above the top portion 233e of the heat transfer plate 233 on the Z2 side. Further, the inside of the circulating water recovery pipe 235b through which the circulating water flows is in communication with the Z2 side opening 238f of each of the plurality of heat transfer plates 233.

  As shown in FIG. 6, the circulating water supply pipe 235a is connected to a circulating water passage 281a of a circulating water circuit 280 described later, and the circulating water of the circulating water passage 281a is supplied. The circulating water recovery pipe 235b is connected to the circulating water passage 281b of the circulating water circuit 280, and the circulating water recovered from the heat transfer plate 233 is recovered to the circulating water passage 281b.

  Further, as shown in FIG. 7, the heat exchange unit 232 further includes a motor 239 to which a rotating shaft 239a is connected. Further, as shown in FIG. 8, the spin coating unit 234 has the same configuration as the spin coating unit 44 of the first embodiment, and applies water to the outer surfaces 233 a and 233 b of the heat transfer plate 233. Have a role.

  Moreover, as shown in FIG. 6, the absorption heat pump apparatus 200 includes a circulating water circuit 280. The circulating water circuit 280 is used for cooling or raising the temperature of the water in the evaporator 230. Specifically, the circulating water circuit 280 circulates through the circulating water flow path 281 through which the circulating water circulates, the pump 282, the heat exchange unit 232 disposed in the evaporator 230, the heat exchange unit 283a, and the heat exchange unit 283a. And a blower 283b for blowing the circulating water. The circulating water channel 281 includes a circulating water channel 281 a that supplies the circulating water to the evaporator 230 and a circulating water channel 281 b that collects the circulating water from the evaporator 230. In addition, the other structure of the absorption heat pump apparatus 200 of 2nd Embodiment is the same as that of the absorption heat pump apparatus 100 of the said 1st Embodiment.

  Next, operation | movement of the absorption heat pump apparatus 200 in 2nd Embodiment is demonstrated. In addition, since it is the same as that of the operation | movement of the absorption heat pump apparatus 100 in 1st Embodiment except operation | movement of the evaporator 230 and the circulating water circuit 280, description is abbreviate | omitted.

(Operation during cooling operation)
At the time of cooling operation of the absorption heat pump device 200, as shown in FIGS. 6 to 8, in the evaporator 230, the water stored in the liquid reservoir 231 a is transferred from the rotary application unit 234 to the outer surface 233 a of the heat transfer plate 233 and 233b is applied. The applied water flows down on the outer surfaces 233a and 233b from the upper side to the lower side by its own weight. At this time, the applied water is warmed by the heat of the circulating water flowing through the circulating water flow path 238 formed over substantially the entire surface of the heat transfer plate 233. Thereby, the air in a vehicle is cooled with the cooled circulating water via the heat exchange part 283a and the air blower 283b of the circulating water circuit 280. Further, the water warmed by heat exchange falls into the liquid reservoir 231a or is supplied to the absorber 40 through the refrigerant vapor passage 53 as refrigerant vapor (low temperature water vapor). Then, the water dropped on the liquid reservoir 231a is again applied to the outer surfaces 233a and 233b of the heat transfer plate 233 by the rotary application unit 234.

(Operation during heating operation)
At the time of heating operation of the absorption heat pump apparatus 200, the high-temperature steam separated by the gas-liquid separation unit 12 flows into the evaporator 230 (acting as a condenser). Here, in the evaporator 230, heat exchange is performed between the circulating water flowing through the circulating water passage 238 and the high-temperature steam on the outer surfaces 233 a and 233 b of the heat transfer plate 233. And the air in a vehicle is warmed by the circulating water which absorbed the heat | fever of the high temperature water vapor | steam via the heat exchange part 283a and the air blower 283b of the circulating water circuit 280. The high-temperature steam cooled by heat exchange is liquefied and falls to the liquid reservoir 231a.

(Effect of 2nd Embodiment)
In 2nd Embodiment, while providing the circulating water flow path 238 through which circulating water distribute | circulates inside the heat exchanger plate 233, the circulating water flow path 238 is formed in a meandering shape. Thereby, similarly to the absorber 40, heat exchange between the water applied to the outer surfaces 233a and 233b of the heat transfer plate 233 and the circulating water can be performed efficiently. In addition, the other effect in the evaporator 230 of 2nd Embodiment is the same as the effect in the absorber 40. FIG.

[Modification]
It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is shown not by the description of the above embodiment but by the scope of claims for patent, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the said 1st Embodiment, the absorber shows the example which has a heat exchanger plate in which the meandering-shaped heat exchange fluid flow path was formed, and in the said 2nd Embodiment, both an absorber and an evaporator are meandering shape. Although the example which has the heat exchanger plate in which the heat exchange fluid flow path was formed was shown, this invention is not limited to this. The absorption heat pump device may be configured so that only the evaporator has a heat transfer plate in which a meandering heat exchange fluid flow path is formed.

  In the first and second embodiments, the heat exchange fluid does not flow through the meandering heat exchange fluid flow path from the upper side to the lower side, and the heat exchange fluid flows from the horizontal direction or from the lower side to the upper side. Although it formed so that it may distribute | circulate, this invention is not limited to this. The heat exchange fluid channel may be formed in a part of the heat exchange fluid channel so that the heat exchange fluid flows from the upper side to the lower side. Further, the heat exchange fluid channel may be formed so that the heat exchange fluid flows in a direction inclined with respect to the vertical direction and the lateral direction in a part of the heat exchange fluid channel.

  In the first and second embodiments, the heat exchange fluid is supplied from below the bottom of the heat transfer plate to the heat transfer plate in which the meandering heat exchange fluid flow path is formed. Although the heat exchange fluid was recovered from above the top, the present invention is not limited to this. For example, heat exchange fluid is supplied from above the top of the heat transfer plate to the heat transfer plate on which the meandering heat exchange fluid flow path is formed, and the heat exchange fluid is recovered from below the bottom of the heat transfer plate. May be. Further, for example, a heat exchange fluid is supplied from one side of the heat transfer plate to the heat transfer plate in which the meandering heat exchange fluid flow path is formed, and from the other side of the heat transfer plate. The heat exchange fluid may be recovered.

  Moreover, in the said 1st and 2nd embodiment, although the five heat exchanger plates were provided in the heat exchange part, this invention is not limited to this. You may provide 1 or more and 4 or less, or 6 or more heat-transfer plates in a heat exchange part. In that case, it is preferable to comprise an application part so that a solvent may be apply | coated to the outer surface of each heat exchanger plate.

  In the first and second embodiments, the heat exchange section is provided with a common heat exchange fluid supply pipe and a common heat exchange fluid recovery pipe on a plurality (five) of heat transfer plates. It is not limited to this. For example, in the heat exchange section, each of the heat transfer plates may be provided with a heat exchange fluid supply pipe and a heat exchange fluid recovery pipe.

  Moreover, in the said 1st and 2nd embodiment, although the cooling water and the circulating water were each used as a heat exchange fluid, this invention is not limited to this. For example, a solvent other than water may be used as the heat exchange fluid. Further, air for air conditioning or the like may be used as the heat exchange fluid.

  Further, in the first and second embodiments, the lower side of the heat transfer plate and the rotary application unit is immersed in the solvent in the liquid reservoir, but the present invention is not limited to this. It is not necessary to immerse the lower side of the heat transfer plate and the spin coating unit in the solvent of the liquid reservoir. In this case, it is preferable to supply the solvent directly to the outer surface of the heat transfer plate.

  Moreover, in the said 1st and 2nd embodiment, although the absorption heat pump apparatus of this invention was applied to air conditioning systems, such as a passenger car and a bus | bath, this invention is not limited to this. The present invention can be applied not only to a vehicle but also to an absorption heat pump device for commercial facilities (stationary type).

  Moreover, in the said 1st and 2nd embodiment, although the absorption liquid was heated using the heat | fever of exhaust gas, this invention is not limited to this. For example, the absorption heat pump device of the present invention may be applied for air conditioning of a hybrid vehicle or an electric vehicle. In addition, the absorption heat pump device of the present invention is applied to the air conditioning of a passenger car equipped with a fuel cell system by utilizing the exhaust heat from the battery or motor of the electric vehicle or the heat generated during power generation in the fuel cell as a heating heat source for the absorbing liquid. May be. At this time, an electric heater or the like may be used as a heating heat source of the absorbing liquid.

  Moreover, in the said 1st and 2nd embodiment, although water and lithium bromide aqueous solution were used as a refrigerant | coolant and absorption liquid, this invention is not limited to this. For example, you may comprise an absorption heat pump apparatus using ammonia and water as a refrigerant | coolant and an absorption liquid, respectively.

40 Absorber 42, 232 Heat exchange part 43, 233 Heat transfer plate 43a, 43b, 233a, 233b Outer surface 43c Hole part 44, 234 Rotating application part (application part)
45a Cooling water supply pipe (heat exchange fluid supply pipe)
45b Cooling water recovery pipe (heat exchange fluid recovery pipe)
46 Body 46b Meandering groove 47 Lid 48 Cooling water channel (Heat exchange fluid channel)
48b Branch channel (first branch)
48c Branch channel (second branch)
100, 200 Absorption heat pump device 235a Circulating water supply pipe (heat exchange fluid supply pipe)
235b Circulating water recovery pipe (heat exchange fluid recovery pipe)
238 Circulating water channel (Heat exchange fluid channel)

Claims (6)

A plate-shaped heat transfer plate having a meandering heat exchange fluid flow path through which the heat exchange fluid flows; and
An absorption heat pump device comprising: a heat exchanging unit including an absorbing liquid that absorbs refrigerant vapor or a coating unit that applies a solvent made of a refrigerant to the outer surface of the heat transfer plate.   The meandering heat exchange fluid flow path is formed so that the heat exchange fluid flows from the upper side to the lower side without flowing the heat exchange fluid from the upper side to the lower side. The absorption heat pump device according to claim 1. A plurality of the heat transfer plates are arranged side by side at a predetermined interval,
The heat exchange part is
Commonly arranged below the plurality of heat transfer plates so as to extend in the arrangement direction of the plurality of heat transfer plates, and supplying the heat exchange fluid to the heat exchange fluid flow paths of the plurality of heat transfer plates from below A heat exchange fluid supply pipe;
The heat exchange fluid that is arranged above the plurality of heat transfer plates so as to extend in the arrangement direction of the plurality of heat transfer plates and that has circulated through the heat exchange fluid flow path of the plurality of heat transfer plates is recovered from above. The absorption heat pump apparatus according to claim 2, further comprising a common heat exchange fluid recovery pipe. The application unit includes a rotation application unit that applies the solvent while rotating along the outer surface of the heat transfer plate,
The heat transfer plate has a hole portion through which a shaft portion for rotating the rotation application portion passes,
The absorption heat pump device according to claim 1, wherein the heat exchange fluid flow path meanders so as to avoid the hole. The heat transfer plate includes a plate-like main body having a meandering groove, and a lid attached to the main body so as to cover the meandering groove,
The absorption heat pump device according to any one of claims 1 to 4, wherein the meandering heat exchange fluid flow path is configured by a space surrounded by the meandering groove and the lid portion. An absorption heat pump device that absorbs refrigerant vapor with an absorption liquid,
An evaporator for evaporating the refrigerant;
An absorber that absorbs the refrigerant vapor evaporated in the evaporator into an absorption liquid, and
The absorber or the evaporator is
A plate-shaped heat transfer plate including a meandering heat exchange fluid flow path through which the heat exchange fluid flows; and
An absorptive heat pump apparatus including a heat exchanging unit having an application liquid that absorbs a refrigerant vapor or a solvent composed of a refrigerant on the outer surface of the heat transfer plate.

Images