JP6576106B2 - Heat utilization device - Google Patents

Description

  The present invention relates to a heat utilization device, and more particularly to a heat utilization device used as a power generation device for recovering waste heat from a factory or the like to generate power.

  Patent Document 1 discloses an exhaust heat power generation apparatus having a Rankine circuit formed from an evaporator, a turbine generator (expander), a condenser, a pump, and a reservoir tank (gas-liquid separator). In this exhaust heat power generator, flanges that serve as inlets and outlets of the heat medium and the working medium of the exhaust heat power generator are collectively provided on the front face of the evaporator and the condenser so that the back face of the evaporator faces the back face of the condenser. This improves the maintainability of the exhaust heat power generator and the workability during assembly, and realizes a reduction in the size of the exhaust heat power generator.

JP 2013-7370 A

In the said apparatus, the connection of said each apparatus and piping which comprise a Rankine circuit is a flange connection. Since the flange connection can be released simply by removing the bolts that have been fastened, the maintenance work can be performed easily and the reliability of heat and pressure resistance is high. Conventionally, it has been widely used for connection.
For example, in the JIS standard, the material, the outer diameter, the plate thickness, and the like of the flange used for the device and the pipe are specified according to the pressure, temperature, and the like of the working medium flowing through the device and the pipe.

  In the said apparatus, the some evaporator and the condenser are arrange | positioned along with the horizontal direction, respectively in the state which put the back surfaces together. In front of each evaporator and each condenser, a pair of working medium circulation inlet / outlet flanges that protrude apart from each other and a pair of heat medium circulation inlets that protrude away from each other vertically. A total of four flanges, including the outlet flange, are provided together. Therefore, the area of the front surface of the evaporator and the condenser and the rear surface thereof is increased. Further, in order to avoid contact interference between the flanges of the adjacent evaporators and between the flanges of the adjacent condensers, the adjacent evaporators and the condensers must be arranged with a slight gap between them. When these gaps become dead spaces, there is a possibility that downsizing of the entire apparatus may be hindered.

Further, in the above apparatus, since the back surfaces of the evaporator and the condenser are opposed to each other, the dimension in the depth direction from the front to the back of the apparatus increases, which is also a factor that hinders downsizing of the entire apparatus. There is a risk of becoming one.
In the above apparatus, no special consideration has been given to the adverse effects of heat conduction that occur when the evaporator and the condenser are arranged close to each other and the properties of the refrigerant when the apparatus is restarted.

  The present invention has been made in view of such problems, and the object of the present invention is to use heat that can realize further downsizing while improving maintainability, assemblability, and reliability. To provide an apparatus.

  In order to achieve the above object, a heat utilization apparatus of the present invention is provided with an evaporator that recovers heat from a high-temperature heat medium flowing through a high-temperature flow path and heats the working medium in a circulation path through which the working medium circulates. An expander that expands the working medium generated to generate a driving force, a condenser that cools and condenses the working medium that has passed through the expander with a low-temperature heat medium that flows through the low-temperature flow path, and an operation that passes through the condenser A Rankine circuit in which a pump for pumping a medium toward the evaporator is inserted at least in sequence, and a housing in which the Rankine circuit is accommodated. A pair of first inlet / outlet flanges to which the first pipe is connected, and a rear side of the front of the evaporator. 2 steam with flanges A condenser having a pair of third inlet / outlet flanges connected to the circulation pipe and protruding from the upper and lower sides of the condenser. A condenser front face, a condenser rear face, and a condenser rear face having a pair of fourth inlet / outlet flanges that protrude apart from each other and are connected to a pipe of a low-temperature flow path. The evaporator front face and the condenser front face, the evaporator rear face, and the condenser rear face are respectively arranged on the same side in the housing.

  According to the heat utilization apparatus of the present invention, it is possible to provide a heat utilization apparatus that can realize further downsizing while improving maintainability, assembly performance, and reliability.

It is the figure which showed typically the structure of the heat utilization apparatus of this invention. It is a see-through | perspective perspective view of the heat utilization apparatus which concerns on 1st Embodiment of this invention. It is a front view of the heat utilization apparatus of FIG. It is a side view of the heat utilization apparatus of FIG. It is a rear view of the heat utilization apparatus of FIG. (A) The perspective view which shows the connection aspect of the piping side flange of FIG. 3, and piping, (b) It is a top view of Fig.6 (a). It is a perspective view which shows the connection aspect used as the modification of the gas-liquid separator of FIG. 3, and a condenser. It is a perspective view of the heat utilization apparatus which concerns on 2nd Embodiment of this invention. It is a front view of the heat utilization apparatus of FIG. It is a side view of the heat utilization apparatus of FIG. It is a rear view of the heat utilization apparatus of FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram schematically showing the configuration of the heat utilization apparatus 1 of the present embodiment. The heat utilization apparatus 1 includes, for example, a Rankine circuit 2 that recovers exhaust heat from a factory or the like (not shown), and a housing 4 that houses the Rankine circuit 2.
The Rankine circuit 2 is a closed circuit in which an evaporator 8, an expander 10, a condenser 12, a gas-liquid separator 14, and a pump 16 are sequentially inserted in a refrigerant (working medium) circulation path 6 in the refrigerant flow direction. Is configured.

  The evaporator 8 is a heat exchanger that exchanges heat between the refrigerant flowing through the circulation path 6 and the high-temperature heat medium (heat medium) flowing through the high-temperature flow path 18. The high-temperature heat medium is, for example, cooling water heated in the factory, that is, hot water. In the evaporator 8, the exhaust heat of the factory is absorbed from the high-temperature heat medium to the Rankine circuit 2 side and recovered. Is heated.

  The expander 10 is a scroll-type fluid device that expands the refrigerant that has been heated by passing through the evaporator 10 and is in the state of superheated steam to generate a rotational driving force. The expander 10 and the pump 16 are connected via a rotating shaft 19, and the rotating shaft 19 converts the rotational driving force generated by the expander 10 between the expander 10 and the pump 16. A generator 20 that can be used outside the heat utilization apparatus 1 is integrally connected. The generator 20 is a so-called motor generator, and is configured to be able to rotationally drive the rotary shaft 19 by a motor function.

The condenser 12 is a heat exchanger that heat-exchanges the refrigerant flowing out of the expander 10 and the low-temperature heat medium (heat medium) flowing through the low-temperature flow path 22 to condense and liquefy it. The low-temperature heat medium is, for example, outside air or cooling water, and the condenser 12 radiates heat from the high-temperature refrigerant after the power is recovered by the expander 10.
The gas-liquid separator 14 separates the refrigerant condensed in the condenser 12 into gas-liquid two layers, and only the liquid refrigerant separated here flows out to the pump 16 side.

  The pump 16 is a pump that is rotationally driven via the rotating shaft 19 by the motor function of the generator 20 and the driving force generated by the expander 10. The pump 16 pumps the liquid refrigerant separated by the gas-liquid separator 14 to the evaporator 8 side after being condensed by the condenser 12, and suitably circulates the refrigerant in the circulation path 6 of the Rankine circuit 8.

  2 is a perspective view of the heat utilization device 1 according to the first embodiment of the present invention, FIG. 3 is a front view of the heat utilization device, FIG. 4 is a side view of the heat utilization device, and FIG. It is a rear view. The heat utilization apparatus 1 is unitized by housing the above-described components of the Rankine circuit 2 in a rectangular parallelepiped housing 4 made of sheet metal or the like. Although not shown, the housing 4 is appropriately provided with maintenance openings, doors, and insertion openings for piping of the high-temperature and low-temperature flow paths 18, 22 that can access the above-described components of the Rankine circuit 2. Yes. Further, a frame (not shown) for supporting and positioning each of the above constituent devices is appropriately fixed in the housing 4.

  In the present embodiment, the evaporator 8 and the condenser 12 are arranged close to each other in the vertical direction Y via a heat insulating member 23 such as a vacuum heat insulating material. Specifically, the condenser 12 is disposed below the evaporator 8. The expander 10, the generator 20, and the pump 16 are a single unit 25 housed in a cylindrical housing, and this unit 25 is disposed below the condenser 12, and the bottom of the housing 4. It is fixed to. The gas-liquid separator 14 is above the unit 25 and partially overlaps the condenser 12 in the vertical direction Y on the front plate 4a side of the housing 4 when viewed in the depth direction Z of FIG. Are arranged.

  The circulation path 6 includes a pipe 6a flanged to the refrigerant inlet to the evaporator 8, a pipe 6b flanged to the refrigerant outlet to the evaporator 8, a pipe 6c flanged to the refrigerant inlet to the condenser 12, It includes a pipe 6d that is flange-connected to the refrigerant outlet to the condenser 12 and a pipe 6e that is connected to the gas-liquid separator 14 outlet. These pipes 6a to 6e are formed by appropriately connecting bellows-like flexible pipes, and thereby, the above-described components of the Rankine circuit 2 and the pipes 6a to 6e in the housing 4 are allowed to be slightly displaced.

  The evaporator 8 has an evaporator front face 8 a, an evaporator rear face 8 b that is the back side of the evaporator front face 8 a, and a lower face (evaporator facing face) 8 c that faces the condenser 12. A first inlet flange 26a serving as a refrigerant inlet and a first outlet flange 26b serving as a refrigerant outlet project from the evaporator front surface 8a so as to be spaced apart from each other in the vertical direction. The first inlet flange 26a is disposed at the lower left corner of the evaporator front surface 8a as viewed in FIG. 3, and the pipe side flange 6a1 to which the pipe 6a is connected is fastened. The first outlet flange 26b is disposed at the upper left corner of the evaporator front surface 8a as viewed in FIG. 3, and a pipe side flange 6b1 to which the pipe 6b is connected is fastened.

  Fig.6 (a) is a perspective view which shows the connection aspect of the piping side flange 6a1 and the piping 6a, FIG.6 (b) is a top view of Fig.6 (a). As shown in FIGS. 6A and 6B, the pipe 6a is connected to the outer peripheral portion 6a2 of the pipe-side flange 6a1 by, for example, screwing or welding. And the flow path 6a3 which changes the flow of a refrigerant | coolant from the protrusion direction of the 1st inlet flange 26a to the radial direction of the 1st inlet flange 26a is perforated by the pipe side flange 6a1 so that it may connect with the pipe 6a.

  Further, a pressure guiding path 6a4 capable of guiding the refrigerant pressure in the flow path 6a3 may be drilled in the pipe side flange 6a1, and the pressure guiding path 6a4 may be opened in the outer peripheral part 6a2. In the case of FIGS. 6A and 6B, the pressure guiding path 6 a 4 is closed by the joint 27. The joint 27 can be connected to a pressure switch, a pressure sensor, a safety valve, a shut-off valve for charging / discharging the refrigerant (all not shown), and the like. The pipe side flanges 6b1 and 6c1 are also formed as shown in FIGS. 6 (a) and 6 (b).

  A second inlet flange 28a serving as a high-temperature heat medium inlet and a second inlet flange 28b serving as a high-temperature heat medium outlet project from the evaporator back surface 8b apart from each other in the vertical direction. The second inlet flange 28a is disposed at the upper left corner of the evaporator back surface 8b as viewed in FIG. 5, and a flange of a pipe (not shown) of the high temperature channel 18 is fastened. The second outlet flange 28b is disposed at the lower left corner of the evaporator back surface 8b as viewed in FIG. 5, and a flange of a pipe (not shown) of the high-temperature channel 18 is fastened.

  The condenser 12 has a condenser front surface 12 a, a condenser back surface 12 b that is the back side of the condenser front surface 12 a, and an upper surface (condenser facing surface) 12 c that faces the evaporator 8. A third inlet flange 30a serving as a refrigerant inlet and a third outlet flange 30b serving as a refrigerant outlet protrude from the condenser front surface 12a apart from each other in the vertical direction. The third inlet flange 30a is disposed at the upper right corner of the condenser front surface 12a as viewed in FIG. 3, and a pipe side flange 6c1 to which the pipe 6c is connected is fastened. The third outlet flange 30b is disposed at the lower right corner of the condenser front surface 12a as viewed in FIG. 3, and a pipe side flange 6d1 to which the pipe 6d is connected is fastened. The pipe-side flanges 6c1 and 6d1 are also formed as shown in FIGS.

  As shown in FIGS. 3 and 4, the pipe 6d is connected to the gas-liquid separator 14 side by screwing or welding. However, the present invention is not limited to this, and as shown in the modification of FIG. 7, the connection between the gas-liquid separator 14 and the condenser 12 may be a flange connection. In this case, the gas-liquid separator 14 has a separator-side flange 14a projecting from the peripheral wall, and the separator-side flange 14a is directly fastened to the third outlet flange 30b, so that the pipe 6d is unnecessary. It becomes.

  On the other hand, a fourth inlet flange 32a serving as a low-temperature heat medium inlet and a fourth inlet flange 32b serving as a low-temperature heat medium outlet protrude from the condenser back surface 12b apart from each other in the vertical direction. The fourth inlet flange 32a is disposed at the upper right corner of the condenser back surface 12b as seen in FIG. 5, and a flange of a pipe (not shown) of the low temperature channel 22 is fastened. The fourth outlet flange 32b is disposed at the lower right corner of the condenser back surface 12b as seen in FIG. 5, and a flange of a pipe (not shown) of the low-temperature channel 22 is fastened.

  As described above, in the heat utilization apparatus 1 of the present embodiment, the evaporator 8 and the condenser 12 include the front plate 4a of the casing 4 in which the evaporator front face 8a and the condenser front face 12a form a rectangular parallelepiped. 4) and facing the same side. That is, as is apparent from FIG. 4, the first and third inlet / outlet flanges 26a, 26b, 30a, 30b for circulating the refrigerant are provided on the evaporator front face 8a and the condenser front face 12a having a slight step, The second and fourth inlet / outlet flanges 28a, 28b, 32a, 32b for media distribution are provided on the evaporator back surface 8b and the condenser back surface 12b, which are substantially flush with each other.

As a result, the first to fourth inlet / outlet flanges 26a, 26b, 28a, 28b, 30a, 30b, 32a, and 32b are all gathered on the evaporator front face 8a and the condenser front face 12a side as compared with the conventional case. Thus, the areas of the evaporator front face 8a, the condenser front face 12a, the evaporator rear face 8b, and the condenser rear face 12b can be reduced.
Further, the first and third inlet / outlet flanges 26a, 26b, 30a, and 30b are respectively formed in the evaporator front face 8a and the condenser front face 12a that are separated from the lower face 8c of the evaporator 8 and the upper face 12c of the condenser 12 when viewed in the horizontal direction X. Are arranged at opposite left and right ends. Further, the second and fourth inlet / outlet flanges 28a, 28b, 32a, 32b are formed by the evaporator back surface 8b and the condenser back surface 12b that are separated from the bottom surface 8c of the evaporator 8 and the top surface 12c of the condenser 12 when viewed in the horizontal direction X. Are arranged at opposite left and right ends.

  As described above, in the case of this embodiment, the first to fourth inlet / outlet flanges 26a, 26b, 28a, 28b, 30a, 30b, 32a, and 32b of the evaporator 8 and the condenser 12 that are vertically adjacent to each other are in contact with each other. Interference is avoided, and no dead space is generated in the housing 4 in order to avoid contact interference between the flanges as in the conventional case. Therefore, further downsizing of the entire heat utilization apparatus 1 can be realized.

  Moreover, the first and third inlet / outlet flanges 26a, 26b, 30a, 30b for circulating the refrigerant are provided on the evaporator front surface 8a and the condenser front surface 12a, while the second and fourth inlet / outlet flanges 28a for circulating the heat medium are provided. 28b, 32a, and 32b are provided on the evaporator back surface 8b and the condenser back surface 12b, so that the heat utilization apparatus 1 is assembled and maintained separately in the refrigerant distribution related and the heat medium distribution related as compared with the conventional case. It can be performed. Therefore, the maintainability and assemblability of the heat utilization apparatus 1 can be improved as compared with the conventional case.

  Further, when the pipe 6a is connected to the outer peripheral part 6a2 of the pipe side flange 6a1, and further, the pipe 6d is excluded by fastening the separator side flange 14a of the gas-liquid separator 14 directly with the third outlet flange 30b. Since the width | variety of the depth direction Z of the heat utilization apparatus 1 can be reduced further, the further size reduction of the heat utilization apparatus 1 is realizable.

  Further, when the condenser 12 is disposed below the evaporator 8 and the unit 25 and thus the pump 16 is disposed below the condenser 12, the operation of the heat utilization device 1 is stopped. The refrigerant naturally flows down to the inlet of the pump 16 through the condenser 12 by gravity. Thereby, the gaseous-phase refrigerant | coolant inflow to the pump 16 at the time of restart of the heat | fever utilization apparatus 1 is prevented reliably, and the pump 16 can pump a refrigerant | coolant without a malfunction. Further, by disposing the heat insulating member 23 between the evaporator 8 and the condenser 12, mutual heat conduction can be suppressed even if the evaporator 8 and the condenser 12 are arranged close to each other. Therefore, the reliability of the heat utilization apparatus 1 can also be improved by these.

  8 is a perspective view of a heat utilization device 34 according to the second embodiment of the present invention, FIG. 9 is a front view of the heat utilization device 34, FIG. 10 is a side view of the heat utilization device 34, and FIG. It is a rear view of an apparatus. The differences between the heat utilization device 34 and the heat utilization device 1 of the first embodiment are mainly the arrangement of the component devices of the Rankine circuit 4, the routing of the pipes 6a to 6e, the shape of the housing 4, and the other The configuration may be denoted by the same reference numerals and description thereof may be omitted.

  Specifically, in the present embodiment, the evaporator 8 and the condenser 12 are arranged close to each other in the horizontal direction X via the heat insulating member 23. Specifically, the condenser 12 is disposed on the right side of the evaporator 8 as viewed in FIG. The unit 25 is disposed below the condenser 12 and is fixed to the bottom of the housing 4. Further, the gas-liquid separator 14 is above the unit 25 and partially overlaps with the condenser 12 in the vertical direction Y on the front plate 4a side of the housing 4 when viewed in the depth direction Z of FIG. Are arranged.

  Also in the heat utilization apparatus 34 of the present embodiment, the evaporator 8 and the condenser 12 are arranged in the casing 4 so that the evaporator front face 8a and the condenser front face 12a are the correct positions of the casing 4 as in the first embodiment. It arrange | positions toward the same side so that the face plate 4a may be opposed. That is, the first and third inlet / outlet flanges 26a, 26b, 30a, and 30b for circulating the refrigerant are provided on the evaporator front surface 8a and the condenser front surface 12a that are substantially flush with each other, while the second and second flanges for circulating the heat medium are provided. Four inlet / outlet flanges 28a, 28b, 32a, 32b are provided on the evaporator back surface 8b and the condenser back surface 12b, which are substantially flush with each other. Thereby, compared with the conventional case, the areas of the evaporator front face 8a and the condenser front face 12a, the evaporator rear face 8b, and the condenser rear face 12b can be reduced.

  Further, the first and third inlet / outlet flanges 26a, 26b, 30a, and 30b are provided on the right side (evaporator facing surface) 8d of the evaporator 8 and the left side (condensation) of the condenser 12 when viewed in the horizontal direction X of FIG. Is disposed at the left end of the evaporator front face 8a and the condenser front face 12a across the 12d. Further, the second and fourth inlet / outlet flanges 28a, 28b, 32a, and 32b are provided on the evaporator rear surface 8b and the condenser separated from the lower surface 8c of the evaporator 8 and the upper surface 12c of the condenser 12 when viewed in the horizontal direction X of FIG. It is arrange | positioned at the left end of the container back surface 12b, respectively.

  As described above, in the case of the present embodiment, the first to fourth inlet / outlet flanges 26a, 26b, 28a, 28b, 30a, 30b, 32a, 32b of the evaporator 8 and the condenser 12 adjacent to the left and right are in contact with each other. As in the case of the first embodiment, interference can be avoided, and the heat utilization apparatus 1 as a whole can be further reduced in size, and the maintainability and assembly of the heat utilization apparatus 1 can be improved. be able to.

  As in the case of the first embodiment, as shown in FIGS. 6A, 6B, and 7, the pipe 6a is connected to the outer peripheral portion 6a2 of the pipe-side flange 6a1, and further, the gas-liquid It is also possible to eliminate the pipe 6d by fastening the separator-side flange 14a of the separator 14 directly with the third outlet flange 30b. In this case, since the width of the heat utilization apparatus 1 in the depth direction Z can be further reduced, the heat utilization apparatus 1 can be further downsized.

Similarly to the case of the first embodiment, the unit 25 and the pump 16 are arranged below the condenser 12, and the heat insulating member 23 is arranged between the evaporator 8 and the condenser 12. While the heat transfer between the evaporator 8 and the condenser 12 in different temperature zones is prevented, the evaporator 8 and the condenser 12 can be adjacent to each other, and further downsizing of the heat utilization apparatus 1 is realized. can do.
The description of the embodiments of the present invention is finished as above, but the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention.

  For example, not only the arrangement of the first to fourth inlet / outlet flanges 26a, 26b, 28a, 28b, 30a, 30b, 32a, 32b of the above-described embodiments, but the evaporator 8 and the condenser 12 may be opposed to the evaporator. And the first to fourth inlet / outlet flanges 26a, 26b, 28a, 28b, 30a, 30b, 32a, 32b are disposed at positions shifted at least in either the vertical direction or the horizontal direction across the condenser facing surface. It should be. Even in this case, the areas of the evaporator front face 8a, the condenser front face 12a, the evaporator rear face 8b, and the condenser rear face 12b can be reduced, and the first to fourth inlet / outlet flanges 26a, 26b, 28a, 28b can be reduced. , 30a, 30b, 32a, 32b can be prevented from contacting each other, and the heat utilization apparatus 1 as a whole can be further downsized.

Moreover, although each said embodiment demonstrated the case where the unit 25 which accommodated the expander 10, the generator 20, and the pump 16 integrally was provided, these expanders 10, the generator 20, and the pump 16 are arrange | positioned separately. You may do it. Moreover, the generator 20 which does not have a motor function may be used, and the motor which is not illustrated may be arrange | positioned separately separately.
In each of the above embodiments, the circulation path 6 is formed by appropriately coupling the pipes 6a to 6e with bellows-like flexible pipes. However, the present invention is not limited to this, and a rubber hose or the like may be used instead of the flexible piping.

Moreover, although the said each embodiment demonstrated the case where the evaporator 8 and the condenser 12 were each arrange | positioned one each, not only this but the evaporator 8 and the condenser 12 may be installed in multiple numbers. In this case, the evaporator 8 and the condenser 12 may be connected in series with respect to the flow of the working fluid or the heat medium, or may be connected in parallel.
In each of the above embodiments, the heat source of the heat utilization devices 1 and 34 is factory exhaust heat. However, the heat source is not limited to this, and various heat sources such as geothermal heat from hot springs and exhaust heat from engines such as vehicles can be used. Use heat may be used as a heat source.

DESCRIPTION OF SYMBOLS 1, 34 Heat utilization apparatus 2 Rankine circuit 4 Case 6 Circulation path 6a, 6b Piping 6c, 6d Piping 6a1, 6b1, 6c1, 6d1 Piping side flange 6a2 Outer part 6a3 Flow path 8 Evaporator 8a Evaporator front 8b Evaporator back 8c Bottom (Evaporator facing surface)
8d Right side (vaporizer facing surface)
DESCRIPTION OF SYMBOLS 10 Expander 12 Condenser 12a Condenser front 12b Condenser back 12c Upper surface (condenser opposing surface)
12d Left side (condenser facing surface)
14 Gas-liquid separator 14a Separator side flange 16 Pump 18 High-temperature flow path 22 Low-temperature flow path 23 Heat insulation member (vacuum heat insulation material)
26a First inlet flange 26b First outlet flange 28a Second inlet flange 28b Second outlet flange 30a Third inlet flange 30b Third outlet flange 32a Fourth inlet flange 32b Fourth outlet flange

Claims (10)

An evaporator that recovers heat from a high-temperature heat medium flowing through a high-temperature flow path and heats the working medium in a circulation path through which the working medium circulates, and an expander that expands the working medium via the evaporator to generate a driving force A condenser that cools and condenses the working medium that has passed through the expander with a low-temperature heat medium that flows through a low-temperature flow path, and a pump that pumps the working medium that has passed through the condenser toward the evaporator at least sequentially. A Rankine circuit inserted; and
A housing for housing the Rankine circuit,
The evaporator protrudes vertically apart and has a pair of first inlet / outlet flanges to which the piping of the circulation path is connected. The evaporator is on the back side of the evaporator front surface, and is separated vertically. And an evaporator back surface having a pair of second inlet / outlet flanges to which the piping of the high-temperature channel is connected, and an evaporator facing surface facing the condenser,
The condenser protrudes up and down apart, and has a pair of third inlet / outlet flanges to which the circulation line pipes are connected. And a condenser rear surface having a pair of fourth inlet / outlet flanges to which the piping of the low-temperature flow path is connected, and a condenser facing surface facing the evaporator facing surface,
The evaporator and the condenser are heat utilization devices in which the evaporator front surface, the condenser front surface, the evaporator back surface, and the condenser back surface are respectively arranged toward the same side in the housing. The evaporator and the condenser are arranged at positions where the first to fourth inlet / outlet flanges are at least shifted in either the vertical direction or the horizontal direction with the evaporator facing surface and the condenser facing surface separated from each other. It is, heat utilization device according to claim 1. The evaporator and the condenser are arranged side by side in the vertical direction,
The first and third inlet / outlet flanges are respectively disposed at opposite ends of the evaporator front surface and the condenser front surface across the evaporator facing surface and the condenser facing surface as viewed in the horizontal direction,
The second and fourth inlet / outlet flanges are respectively disposed on the evaporator back surface and the condenser back surface opposite to the opposite ends of the evaporator back surface and the condenser back surface as viewed in the horizontal direction. The heat utilization apparatus according to claim 2.   The heat utilization apparatus according to claim 3, wherein the condenser is disposed below the evaporator.   The heat utilization apparatus according to claim 3 or 4, wherein the pump is disposed below the condenser. The evaporator and the condenser are arranged side by side in a horizontal direction,
The first and third inlet / outlet flanges are respectively disposed on the same side of the evaporator front surface and the condenser front surface across the evaporator facing surface and the condenser facing surface when viewed in the horizontal direction,
The second and fourth inlet / outlet flanges are respectively disposed at the same side end of the evaporator back surface and the condenser back surface that are separated from the evaporator facing surface and the condenser facing surface when viewed in the horizontal direction. The heat utilization apparatus according to claim 2. A pipe side flange is fastened to each of the first and third inlet / outlet flanges,
A pipe of the circulation path is connected to an outer peripheral portion of the pipe-side flange, and the flow of the working medium flows into the pipe-side flange from the projecting direction of the first and third inlet / outlet flanges. The heat utilization apparatus according to any one of claims 1 to 6, wherein a flow path to be changed in a radial direction of the outlet flange is formed so as to communicate with the piping of the circulation path. The Rankine circuit is interposed between the condenser and the pump, separates the working medium condensed by the condenser into gas and liquid, and flows out only the separated liquid working medium to the pump side. A gas-liquid separator,
The gas-liquid separator has a separator-side flange projecting from a peripheral wall thereof, and the separator-side flange is directly connected to the third outlet flange. The heat utilization apparatus as described in.   The heat utilization apparatus according to any one of claims 1 to 8, wherein a heat insulating member is disposed between the evaporator and the condenser.   The heat utilization apparatus according to claim 9, wherein the heat insulating member is a vacuum heat insulating material.

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