TW202233957A - Rotary heat pump, and air conditioner and automobile equipped with same - Google Patents

Abstract

The present invention addresses the problem of providing a rotary heat pump the size of which can be reduced in comparison to current rotary heat pumps. As a means to solve this problem, a rotary heat pump (100) is provided with: a rotary drive unit (60) including a rotor (20) that rotates eccentrically and has a rotary shaft (10), a stationary gear (15), and a rotary gear (24) that meshes with the stationary gear (15), a rotary housing (30) that follows a peritrochoid curve defined by the eccentric rotation of the rotor (20), and a first side housing (40) and a second side housing (50) that respectively cover one end and the other end of the rotary housing (30) and secure the stationary gear (15); heat exchange fins 70 provided in both a compression region (32) and an expansion region (34) that are defined by the rotor (20) and the rotary housing (30) and respectively have a minimum planar area and a maximum planar area; and a heat-insulating portion (80) formed at the boundary portion of the compression region (32) and the expansion region (34).

Description

Rotary heat pumps and air conditioners equipped with the same, and automobiles

The present invention relates to a rotary heat pump, an air conditioner equipped with the rotary heat pump, and an automobile.

Conventionally, a configuration of a heat pump (refrigerator) in the form of a Stirling engine has been known. Regarding such heat pumps, a so-called reciprocating heat pump and a rotary heat pump have been introduced, and among them, the rotary heat pump is superior to the reciprocating heat pump in terms of noise reduction and ease of miniaturization. Regarding the rotary heat pump in recent years, a configuration as disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2008-38879 ) has been proposed.

[The problem to be solved by the invention]

As shown in FIG. 7 , the rotary heat pump RHP disclosed in Patent Document 1 employs a dual-rotor configuration including a discharge-side rotor DR and a power-side rotor PR. In a heat pump, an air conditioner equipped with a heat pump, and an automobile, it is desired to further reduce the existing size and weight, but in the configuration of the rotary heat pump RHP disclosed in Patent Document 1, there is a problem that cannot support the heat pump or the air equipped with the heat pump. It is a question of requirements for further miniaturization and weight reduction of regulators and automobiles.

In addition, in recent years, although electrification has been accelerated at the legislative level in the automotive industry, the energy density of existing batteries is still insufficient for the power required by the on-board system, which is based on the power installed in the car. It is represented by controllers, drive systems, preventive safety devices, and in-vehicle air conditioning systems. Therefore, there is an urgent need for high efficiency in all of these in-vehicle systems. Among them, the power consumption of the air conditioner, which is an in-vehicle air conditioning system, is particularly large, and the high efficiency of the air conditioner is an urgent problem that needs to be solved in the electrification of the vehicle. [means to solve the problem]

Therefore, an object of the present invention is to provide a rotary heat pump capable of further reducing the size, weight, and efficiency of the existing configuration, an air conditioner equipped with the rotary heat pump, and an automobile capable of promoting electrification.

That is, the present invention is a rotary heat pump characterized by comprising: a rotary drive unit having a rotating shaft, a fixed gear through which the rotating shaft is inserted, and a larger diameter than the outer diameter of the fixed gear. A rotor having a size and having a rotor gear meshing with the fixed gear and rotating eccentrically with the rotation of the rotating shaft, along the outer diameter defined by the eccentric rotation of the rotor in such a way that the area in the radial outer direction of the rotor can be divided. A rotating casing formed by a peritrochoid, a first side casing having an insertion hole through which the rotating shaft is inserted, covering one end side of the rotating casing and fixing the fixed gear, and covering the rotating casing The second side casing on the other end side of the body; the fins for heat exchange, which are arranged in the compression area where the plane area of the area divided by the outer peripheral surface of the rotor and the inner peripheral surface of the rotating casing becomes the smallest an outer surface of the rotating casing in each of the regions where the planar area of the region becomes the largest expansion region; and a heat insulating portion arranged in a desired range in the circumferential direction including the boundary between the compression region and the expansion region part.

In addition, the present invention also provides a rotary heat pump characterized by comprising: a rotary drive unit having a rotating shaft, a fixed gear through which the rotating shaft is inserted, and a diameter larger than an outer diameter of the fixed gear. A rotor having a size and having a rotor gear meshing with the fixed gear and rotating eccentrically with the rotation of the rotating shaft, along the outer diameter defined by the eccentric rotation of the rotor in such a way that the area in the radial outer direction of the rotor can be divided. A rotating casing formed by a peritrochoid, a first side casing having an insertion hole through which the rotating shaft is inserted, covering one end side of the rotating casing and fixing the fixed gear, and covering the rotating casing The second side casing on the other end side of the body; the fins for heat exchange, which are arranged in the compression area where the plane area of the area divided by the outer peripheral surface of the rotor and the inner peripheral surface of the rotating casing becomes the smallest the outer surface of the rotating casing in the expansion region where the planar area of the region becomes the largest; and a bypass path that communicates the plurality of expansion regions.

Thereby, since it is possible to dissipate heat and absorb heat with one rotating structure, it is possible to significantly reduce the size and weight, and to increase the efficiency compared with the conventional rotary heat pump.

Furthermore, it is preferable that the bypass path communicates the first expansion region on the upstream side of the rotor with the second expansion region on the downstream side, and extends from the uppermost position in the vertical direction in the bypass path to the second expansion region on the downstream side. At least one of a communication portion or a second communication portion is formed by a downwardly inclined portion, the first communication portion communicates with the first expansion area, and the second communication portion communicates with the second expansion area .

Furthermore, it is preferable that the bypass path communicates the first expansion region on the upstream side of the rotor with the second expansion region on the downstream side, and extends from the uppermost position in the vertical direction in the bypass path to the second expansion region on the downstream side. At least one of a communicating portion or a second communicating portion is formed by a horizontal portion and a downwardly inclined portion, the first communicating portion communicates with the first expansion region, and the second communicating portion communicates with the second communicating portion. The expansion area is connected.

As a result, the lubricating oil in the rotary heat pump does not stay in the bypass passage that communicates the expansion regions, and the rotation driving part of the rotary heat pump can be reliably lubricated.

In addition, preferably, the bypass paths are respectively connected to bypass holes, and the bypass holes are formed in at least one of the first side casing or the second side casing of the expansion region.

Thereby, the expansion of the external dimensions due to the bypass path can be suppressed.

In addition, it is preferable that the rotor and the rotating casing are a Wankel type rotor and a Wankel type rotating casing.

Thereby, since a well-known rotation structure can be used, the reliability of a rotation structure can be improved.

In addition, there is another invention as an air conditioner, which is characterized in that the rotary heat pump according to any one of the above descriptions is mounted thereon, and there is another invention of an automobile in which the air conditioner is mounted.

Thereby, it can contribute to the reduction in size, weight and efficiency of the air conditioner. In addition, the size and weight of a car equipped with such an air conditioner can also be promoted. In addition, the electrification of automobiles can be promoted through energy saving of in-vehicle systems. [Effect of invention]

According to the configuration of the rotary heat pump of the present invention, since the number of rotating structures can be one, compared with the rotary heat pump of the prior art, the size, weight, and efficiency can be greatly improved. In addition, in an air conditioner equipped with such a rotary heat pump, it is possible to achieve reduction in size, weight and efficiency. In addition, by installing this air conditioner, it is possible to promote the miniaturization, weight reduction and electrification of automobiles.

[Form for carrying out the invention]

Hereinafter, the rotary heat pump 100 of the present invention will be described with reference to the drawings.

(first embodiment) FIG. 1 is a plan view showing the internal structure of the second side casing 50 of the rotary heat pump 100 according to the first embodiment through a perspective view. The rotary heat pump 100 includes a rotary drive unit 60 and heat exchange fins 70 arranged on the outer wall surface of the rotary drive unit 60 . The rotary drive unit 60 of the present embodiment includes a rotating shaft 10 , a fixed gear 15 , a rotor 20 , a rotating casing 30 , a first side casing 40 and a second side casing 50 . This rotational drive part 60 has a structure in which a part formed of a metal material and a part formed of a heat insulating material, that is, the heat insulating part 80, are alternately arranged in the circumferential direction. As is clearly seen in FIG. 1 , a description will be given assuming that the rotary heat pump 100 of the present embodiment employs a Wankel type rotary drive unit 60 .

The first end portion of the rotary shaft 10 is rotatably supported in the inner space of the rotary drive portion 60 , and the second end portion protrudes from the rotary drive portion from an insertion hole (not shown) of the first side housing 40 . 60's exterior. The second end of the rotating shaft 10 is connected to an output shaft (not shown) of a prime mover provided outside the rotational driving part 60 by a known method. In addition, a fixed gear 15 is fixed to the insertion hole of the first side casing 40 by screwing. The fixed gear 15 is inserted from the outer surface side of the first side casing 40 and is used for the rotation shaft 10 to pass through. As such a rotary shaft 10 , an eccentric shaft can be suitably used like a rotary engine.

In the rotor 20 of the present embodiment, at least a required thickness range of the outer surface is formed into a so-called Reuleaux triangle shape (Wankel type rotor) by a heat insulating material, and a portion of the fitting hole 22 is formed. It is fitted into a rotating journal 12 formed on the rotating shaft 10 and is fixed in a state rotatable together with the rotating shaft 10 . A rotor gear 24 is formed in the central portion of the rotor 20 in a plan view. The rotor gear 24 is larger in diameter than the outer diameter of the fixed gear 15 and the fitting hole 22, and is formed coaxially with the fitting hole 22 and with the fixed gear. 15 meshes. Since the fixed gear 15 fixed to the first side casing 40 and the rotor gear 24 mesh only within a required range in the circumferential direction, when the rotating shaft 10 rotates, the rotor 20 rotates around the rotating shaft 10 (fixed gear 15 ). Eccentric rotational movement around.

The rotating casing 30 is formed as a cocoon-shaped cylindrical body (Wankel type rotating casing) which can divide the radially outer direction area of the rotor 20 along an epitrochoid plane defined by the eccentric rotation of the rotor 20 . An opening surface of the rotary casing 30 is covered by the first side casing 40, and the first side casing 40 is formed with an insertion hole for inserting the fixed gear 15 into the rotary casing 30 (rotation driving part 60). (not shown). The rotating shaft 10 is inserted through the fixed gear 15 , and the rotating shaft 10 , the fixed gear 15 and the first side casing 40 are sealed by a known method.

In addition, the second side case 50 is attached to the other opening surface of the rotary case 30 in a sealed state with the rotary case 30 . The basic form of the rotary drive unit 60 can be the same as the configuration in which the intake/exhaust unit and the ignition unit in a so-called rotary engine are omitted. Furthermore, in the present embodiment, it is preferable that the space surrounded by the rotor 20, the rotating casing 30, the first side casing 40 and the second side casing 50 be appropriately arranged by a sealing member (not shown). shown) sealed. The spaces are filled with helium gas, which is an example of a refrigerant gas, respectively.

Moreover, the fins 70 for heat exchange are arrange|positioned at the outer surface of the rotary casing 30, and several parts of the circumferential direction, respectively, in a required range. The shape and plane area of the region divided by the inner peripheral surface of the rotary casing 30 and the outer peripheral surface of the rotor 20 in the circumferential direction of the rotary casing 30 vary with the eccentric rotation of the rotor 20 . In the present embodiment, when the rotating shaft 10 is set as the center of rotation, two compression regions 32 and two expansion regions 34 are respectively formed, and the compression regions 32 are regions where the plane area of the divided regions becomes the smallest. The expansion area 34 is the area in which the plane area of the divided area becomes the largest. The compression regions 32 and the expansion regions 34 are alternately arranged at intervals of 90 degrees in the circumferential direction of the rotary casing 30 with the center of the plane of the rotary casing 30 as the center of rotation.

Furthermore, among the fins 70 for heat exchange, the fins that are erected on the outer wall surface of the rotary driving part 60 at the positions corresponding to the high temperature region, that is, the compression region 32 are the fins 72 for heat dissipation, and are vertically arranged on the rotary driving part. The fins on the outer wall surface 60 at the positions corresponding to the expansion regions 34 that are the low temperature regions are the fins 74 for heat absorption.

When the rotary driving part 60 of the present embodiment is driven to rotate by the prime mover, the helium gas as the refrigerant gas filled in the inner space of the rotary driving part 60 is sequentially transferred to the compression regions alternately appearing in the circumferential direction of the rotary casing 30 32 and the expansion region 34, and are switched to a high temperature state and a low temperature state. In addition, in the rotary casing 30 , the first side casing 40 and the second side casing 50 of the present embodiment, at least the required range in the circumferential direction including the boundary between the compression region 32 and the expansion region 34 is made of a heat insulating material. is formed, and the heat insulating material portion becomes the heat insulating portion 80 . By arranging the heat insulating portion 80 at the boundary portion between the compression region 32 and the expansion region 34, even the single rotor type rotary drive portion 60 can exchange heat with the heat dissipation fins 72 and the heat absorption fins 74, respectively. The object's outside air exchanges heat. In addition, the whole of the 1st side case 40 and the 2nd side case 50 of this embodiment is formed of the heat insulating material.

By adopting the form of the rotary heat pump 100 of the present embodiment, a heat pump structure of a complete gas phase type Carnot cycle can be formed. During one rotation of the rotor 20 of the present embodiment in the inner space of the rotary casing 30 , heat dissipation and heat absorption can be performed twice, respectively. Thereby, not only the structure is small and light, and the noise is low, but also efficient heat exchange can be performed. In addition, if the rotation of the output shaft of the prime mover is increased to increase the rotational speed of the rotor 20, it is beneficial to rapid heating and rapid cooling.

(Second Embodiment) FIG. 2 is a front view of the second side casing 50 of the rotary heat pump 100 according to the second embodiment, which is seen through and showing the internal structure. The rotary heat pump 100 of this embodiment is arrange|positioned so that the upper side in a figure may become the upper side in a vertical direction. In this embodiment, the same reference numerals as those used in the first embodiment are assigned to the same components as those of the first embodiment, and the detailed description is omitted here.

The rotary heat pump 100 of the present embodiment is characterized in that, compared with the configuration described in the first embodiment, it further includes a bypass path 90 for connecting the two expansion regions 34 (the first expansion region 34A and the second expansion region 34B) communicate with each other. Furthermore, the configuration of the rotary heat pump 100 according to the first embodiment is also different in that the fins 72 for heat dissipation and the fins for heat absorption 74 are each erected at one place and the heat insulating portion 80 is arranged at only two places. .

The bypass path 90 of the present embodiment is connected to the bypass hole 34C drilled in the rotating casing 30 located in the first expansion area 34A and the second expansion area 34B, and the first expansion area 34A is located upstream of the rotor 20 in the rotational direction On the other hand, the second expansion region 34B is located on the downstream side in the rotational direction of the rotor 20 . In this way, by connecting the first expansion region 34A and the second expansion region 34B, the volume of the expansion region 34 after the compression region 32 can be greatly increased, and the temperature reduction can be promoted by the expansion of helium. In this embodiment, although the first expansion area 34A and the second expansion area 34B are communicated, the heat-absorbing fins 74 are erected only on the rotating casing corresponding to the first expansion area 34A provided immediately after the compression area 32. 30 outer wall. In addition, the entire second expansion region 34B of the communication destination (located before the compression region 32 which is a high temperature region) communicated by the bypass path 90 may be formed by the heat insulating portion 80 . Furthermore, as shown in FIG. 2 , the bypass path 90 may be provided with a heat sink 92 for the bypass path.

In addition, in the rotary heat pump 100 of the present embodiment, almost no refrigerant gas, that is, helium gas, is fed into the compression region 32A at the position sandwiched between the first expansion region 34A and the second expansion region 34B communicated by the bypass path 90 . compression. Therefore, the compressed region 32A held at the position of the first expansion region 34A and the second expansion region 34B is excluded from the objects for disposing the heat dissipation fins 72 and the heat insulating portion 80 . That is, only the inflation region 34 (here, the second inflation region 34B) at the most downstream position among the plurality of inflation regions 34 (here, the first inflation region 34A and the second inflation region 34B) communicated by the bypass path 90 The compression region 32 following the expansion region 34B) is provided with the fins 72 for heat dissipation and at least the fins 72 for heat dissipation in the heat insulating portion 80 . With such a configuration, it is possible to contribute to the reduction of the weight of the rotary heat pump 100 and the reduction of the manufacturing cost.

The bypass path 90 of the present embodiment is connected to the bypass hole 34C drilled in the rotary casing 30 located in the first expansion area 34A and the second expansion area 34B, and the second expansion area 34B has a height in the vertical direction. The position is located above the first expansion region 34A. In this way, by connecting the first expansion region 34A and the second expansion region 34B, the volume of the space for expansion of the helium gas sent from the compression region 32 can be greatly increased, and the temperature reduction due to the expansion of the helium gas can be promoted. More specifically, in the bypass path 90 , the inclination of the cross-section from the uppermost position 94 in the vertical direction of the bypass path 90 to the first expansion region 34A and the second expansion region 34B is a downward slope. In other words, from the uppermost position 94 in the vertical direction of the bypass path 90 toward the bypass hole 34C, which is the first communication portion with the first expansion region 34A, and the bypass hole, which is the second communication portion with the second expansion region 34B 34C communicates with the downwardly inclined portion 96 whose vertical height in the bypass path 90 gradually decreases.

When the rotary drive unit 60 is driven to rotate by a prime mover (not shown), the helium gas, which is a refrigerant gas filled in the inner space of the rotary drive unit 60 , is sequentially sent out to the compression alternately appearing in the circumferential direction of the rotary casing 30 . The region 32 and the first expansion region 34A and the second expansion region 34B. In this way, the helium gas alternately sent to the compression region 32 and the expansion region 34 is alternately switched to a high temperature state and a low temperature state. The lubricating fluid represented by the vaporized lubricating oil is mixed into the helium gas sent from the compression region 32, and when it is sent to the first expansion region 34A and the second expansion region 34B and the bypass path 90 connecting these, the lubricating fluid becomes Condenses due to temperature drop. In the present embodiment, even if the lubricating fluid condenses in the bypass passage 90, under the action of gravity, the lubricating fluid can be moved from the uppermost position 94 in the bypass passage 90 to the first position by the downward inclined portion 96, respectively. The expansion region 34A and the second expansion region 34B flow down. Thereby, the lubricating fluid does not remain in the bypass passage 90, and the function of lubricating the rotational driving part 60 by the lubricating fluid can be maintained.

By adopting the form of the rotary heat pump 100 of the present embodiment, a heat pump structure of a complete gas phase type Carnot cycle with reliable lubrication in the rotary drive unit 60 can be realized. The rotor 20 of this embodiment can dissipate heat and absorb heat once during the rotation of the inner space of the rotary casing 30 for one revolution. Thereby, not only the structure is small and light, and the noise is low, but also efficient heat exchange can be performed. In addition, if the rotation of the output shaft of the prime mover is increased to increase the rotational speed of the rotor 20, it is beneficial to rapid heating and rapid cooling. In addition, since the lubricating liquid injected into the rotary drive part 60 does not stay in the bypass path 90, the lubricating action of the rotary drive part 60 can always be performed, so that the highly reliable rotary heat pump 100 can be provided.

(third embodiment) FIG. 3A is a perspective view of the rotary heat pump 100 according to the third embodiment, and FIG. 3B is a perspective view of the internal structure viewed from the arrow B side in FIG. 3A . In addition, in FIG. 3, in order to simplify the illustration, the fins 72 for heat dissipation, the fins for heat absorption 74, the heat insulation part 80, etc. are omitted, but the fins for heat dissipation 72, the fins for heat absorption 74, and the heat insulation part are not shown. 80, etc., can be arranged in the same manner as in the first embodiment or the second embodiment. In addition, in this embodiment, the same code|symbol as used in the previous embodiment is attached|subjected to the structure which is the same as that of the other embodiment demonstrated above, and a detailed description is abbreviate|omitted here. The rotary heat pump 100 of the present embodiment differs from the configuration of the rotary heat pump 100 of the second embodiment in that the rotary shaft 10 stands upright in the direction (vertical direction) perpendicular to the installation surface.

The first expansion region 34A and the second expansion region 34B in the present embodiment have the same height position in the vertical direction, and are communicated with each other by a bypass path 90 formed in an inverted ㄈ shape. The bypass path 90 of the present embodiment is formed at the uppermost position 94 in the vertical direction at a horizontal portion that spans a desired length range, and is connected to the first expansion region 34A and the second expansion region at both ends of the horizontal portion. 34B communicates with the downwardly inclined inclined portion 96 . In this way, even if it is assumed that there is a horizontal portion in the bypass path 90 due to the layout of the bypass path 90 , the lubricating fluid can still be directed toward the first expansion region 34A from the downwardly inclined portion 96 having the extension portion extending twice or more than the horizontal portion. and the second expansion region 34B flows down. Thereby, the retention of the lubricating liquid in the horizontal portion of the bypass passage 90 does not affect the lubrication of the rotational driving portion 60 . In addition, by forming the bypass path 90 with a material having hydrophilicity with the lubricating liquid, or by subjecting the inner peripheral surface of the bypass path 90 to a surface treatment to improve the hydrophilicity with the lubricating liquid, the flow of the bypass path 90 can be promoted. flow of lubricant.

As described above, the rotary heat pump 100 of the present invention has been described based on the embodiment, but the present invention is not limited to the above embodiment. For example, the rotary heat pump 100 of the above-described embodiment has been described in which the Wankel-type rotary drive unit 60 is used, but it is not limited to this structure, and a known structure of the rotary drive unit 60 can be suitably applied. In the case where the structure of the rotation driving part 60 has a plurality of expansion regions 34 , the bypass path 90 may connect the three or more expansion regions 34 to each other. In this case, in the compression region 32A at the position sandwiched by the expansion region 34 communicated by the bypass path 90, since the refrigerant gas does not substantially compress, disposing heat dissipation to the compression region 32A of these forms is omitted. Use fins 72. In addition, the layout of the communication portion with the bypass path 90 in the plurality of expansion regions 34 communicated by the bypass path 90 and the layout of the bypass path 90 can be the same as that of the second embodiment.

In addition, as shown in FIGS. 2 and 3 , the rotary heat pump 100 of the foregoing embodiment is provided with a bypass hole 34C in the rotary casing 30 of the first expansion region 34A and the second expansion region 34B, and the bypass hole is 34C serves as the first communication portion and the second communication portion, but is not limited to this form. As shown in FIG. 4 , instead of the bypass holes 34C as the first communication portion and the second communication portion provided in the rotary casing 30 , a through hole penetrating through the plate thickness direction may be formed in the first side casing 40 . As the first communication portion and the second communication portion, the through holes of the plurality of expansion regions 34 are connected to each other by bypass paths (not shown in FIG. 4 ). The through hole may be arranged not only in the first side case 40 but also in the second side case 50 or the first side case 40 and the second side case 50 . As described above, by arranging the bypass path 90 in the plane area of the rotary drive unit 60, there is an advantage in that the area dedicated to the plane can be reduced compared to the rotary heat pump 100 of the present embodiment.

In the second embodiment, although the bypass path 90 is provided with the bypass path fins 92 and heat exchange (heat absorption) is possible in the bypass path 90, it is not limited to this. The bypass path 90 may be formed by a heat insulating material, or as shown in FIG. 3 , a configuration in which the arrangement of the bypass path fins 92 may be omitted may be employed.

In addition, in the second embodiment and the third embodiment having the bypass path 90, the layout (second embodiment) in which the rotating shaft 10 is rotated by 90 degrees with respect to the vertical line is illustrated, and the rotating shaft 10 is parallel to the vertical line. layout (third embodiment), but is not limited to these layouts. A form in which the rotary heat pump 100 is an intermediate layout of the layouts shown in the second embodiment and the third embodiment may be adopted. That is, as long as the lubricating fluid does not stay in the bypass path 90 that communicates the first expansion region 34A and the second expansion region 34B, the bypass path 90 is formed only in the first expansion portion 96 with the lower inclination slope 96 . Either the region 34A or the second expansion region 34B may be formed by the downwardly inclined portion 96 and a small number of horizontal portions.

In addition, the bypass paths 90 of the second embodiment and the third embodiment both show the first communication portion from the uppermost position 94 in the vertical direction to the first communication portion with the first expansion region 34A through the downward inclined portion 96, respectively. That is, the form of communication between the bypass holes 34C and the second communication portion of the second expansion region 34B, that is, the bypass holes 34C, is not limited to this form. It is also possible to use the downward inclined portion 96 to connect only the bypass hole 34C from the uppermost position 94 of the bypass path 90 to the bypass hole 34C of the first expansion area 34A, or the bypass from the uppermost position 94 to the second expansion area 34B. The form of any one between the through holes 34C.

In addition, in the third embodiment, the horizontal portion in the bypass path 90 is arranged at the uppermost position 94 in the vertical direction of the bypass path 90, but it is not limited to this form. The horizontal portion may be arranged in the middle of the downward inclined portion 96 .

In addition, in the present embodiment, the inside of the rotary drive part 60 is filled with helium gas with high thermal conductivity as the refrigerant gas. However, the refrigerant gas having such characteristics is not limited to helium, and hydrogen gas and Well-known refrigerant gas such as carbon dioxide gas.

In addition, there is another invention of an air conditioner 200, and as shown in FIG. 5, the rotary heat pump 100 described above is mounted thereon. In addition, there is another invention of an automobile 300, as shown in FIG. 6, in which an air conditioner 200 is mounted, and the rotary heat pump 100 described in the present embodiment is mounted on the air conditioner 200. As shown in FIG. In addition, since the specific structures of the air conditioner 200 and the automobile 300 are well-known structures, detailed description is abbreviate|omitted here. According to the air conditioner 200 of the present invention, reduction in size, weight and efficiency can be achieved. Furthermore, according to the automobile 300 of the present invention, in addition to the reduction in size and weight, the electrification of the automobile 300 can be promoted by greatly reducing the energy consumption of the in-vehicle system.

In addition, the above-described rotary heat pump 100 may be arranged in series in the axial direction of the rotating shaft 10 . Thereby, although the occupied volume of the rotary heat pump 100 is increased, as long as an elongated space can be secured, the rotary heat pump 100 with higher performance, the air conditioner 200 and the automobile 300 equipped with the rotary heat pump can be provided.

In addition, the structure of the present embodiment described above may be a modified example described in the specification, or a form in which other well-known structures are appropriately combined.

10: Rotary axis 12: Rotary journal 15: Fixed gear 20: Rotor 22: Fitting hole 24: Rotor Gear 30: Rotary shell 32: Compression area 34: Expansion area 34A: First expansion zone 34B: Second expansion zone 34C: Bypass hole 40: First side shell 50: Second side shell 60: Rotary drive part 70: Fins for heat exchange 72: Fins for heat dissipation 74: Fins for heat absorption 80: Insulation part 90: Bypass Path 92: Heat sink for bypass path 94: top position 96: Downward slope 100: Rotary Heat Pump 200: Air conditioner 300: car

FIG. 1 is a plan view showing the internal structure of the rotary heat pump of the first embodiment through a second side casing. Fig. 2 is a plan view showing the internal structure of the rotary heat pump of the second embodiment through a second side casing. 3A is a perspective view of a rotary heat pump according to a third embodiment, and FIG. 3B is a perspective view viewed from the direction of arrow B in FIG. 3A . FIG. 4 is an explanatory view showing the internal structure of a second side casing in a modified example of the rotary heat pump according to the second embodiment through perspective. FIG. 5 is a schematic diagram showing an air conditioner equipped with the rotary heat pump of the present embodiment. FIG. 6 is an explanatory diagram of a vehicle to which the air conditioner shown in FIG. 5 is mounted. FIG. 7 is a schematic structural diagram of a rotary heat pump in the prior art.

10: Rotary axis

12: Rotary journal

15: Fixed gear

20: Rotor

22: Fitting hole

24: Rotor Gear

30: Rotary shell

32: Compression area

34: Expansion area

40: First side shell

50: Second side shell

60: Rotary drive part

70: Fins for heat exchange

72: Fins for heat dissipation

74: Fins for heat absorption

80: Insulation part

100: Rotary Heat Pump

Claims (9)

A rotary heat pump, characterized by comprising: a rotary drive unit having a rotating shaft, a fixed gear through which the rotating shaft is inserted, a size larger than an outer diameter of the fixed gear, and having a diameter similar to that of the fixed gear. A rotor that meshes with gears and a rotor that rotates eccentrically with the rotation of the rotating shaft is formed along an epitrochoid defined by the eccentric rotation of the rotor so that the area in the radial outer direction of the rotor can be divided. A rotating casing, a first side casing having an insertion hole through which the rotating shaft is inserted, covering one end side of the rotating casing and fixing the fixed gear, and a second side covering the other end side of the rotating casing A casing; a heat exchange fin, which is arranged in a compression area where the plane area of the region divided by the outer peripheral surface of the rotor and the inner peripheral surface of the rotating casing becomes the smallest and the expansion area of the area becomes the largest an outer surface of the rotating casing in each of the regions; and a heat insulating portion disposed at a desired range portion in the circumferential direction including the boundary between the compression region and the expansion region. A rotary heat pump, comprising: a rotary drive unit having: a rotating shaft; a fixed gear through which the rotating shaft is inserted; A rotor that meshes with gears and a rotor that rotates eccentrically with the rotation of the rotating shaft is formed along an epitrochoid defined by the eccentric rotation of the rotor so that the area in the radial outer direction of the rotor can be divided. A rotating casing, a first side casing having an insertion hole through which the rotating shaft is inserted, covering one end side of the rotating casing and fixing the fixed gear, and a second side covering the other end side of the rotating casing case; The fins for heat exchange are arranged in the compression region where the plane area of the region divided by the outer peripheral surface of the rotor and the inner peripheral surface of the rotating casing becomes the smallest in the compression region and the expansion region in which the plane area of the region becomes the largest. the outer surface of the aforementioned rotating housing; and A bypass path that communicates a plurality of the aforementioned expansion regions. The rotary heat pump according to claim 2, wherein the bypass path communicates the first expansion region on the upstream side of the rotor with the second expansion region on the downstream side in the rotational direction of the rotor, and extends from the vertical direction most point in the bypass path. The upper position and at least one of the first communication portion or the second communication portion are formed by a downwardly inclined portion, the first communication portion is communicated with the first expansion area, and the second communication portion is communicated with the first communication portion. The two expansion regions are connected. The rotary heat pump according to claim 2, wherein the bypass path communicates the first expansion region on the upstream side of the rotor with the second expansion region on the downstream side in the rotational direction of the rotor, and extends from the vertical direction most point in the bypass path. The upper position to at least one of the first communication part or the second communication part is formed by a horizontal part and a downward inclined part, the first communication part is communicated with the first expansion area, and the second communication part The system communicates with the second expansion region. The rotary heat pump according to any one of claims 2 to 4, wherein the bypass paths are respectively connected to bypass holes formed in the first side casing or the second side of the expansion region. at least one of the housings. The rotary heat pump according to any one of claims 1 to 4, wherein the rotor and the rotating shell are a Wankel-type rotor and a Wankel-type rotating shell. The rotary heat pump according to claim 5, wherein the rotor and the rotating shell are a Wankel-type rotor and a Wankel-type rotating shell. An air conditioner equipped with the rotary heat pump according to any one of claims 1 to 7. An automobile characterized in that the air conditioner as claimed in claim 8 is installed.

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