Rotary compressor and refrigeration cycle device

Abstract

Provided is a rotary compressor and a refrigeration cycle device that can reduce the influence of the wiring weight of a connector arranged outside the case and can reduce the length of a power supply line along the outer surface of the case. [Solution] A rotary compressor (10) has a case (11) and a connector (24). The case is cylindrical and houses an electric mechanism (14) and a compression mechanism (16). The connector is provided at a case end (17) on one side of the case in the axial direction (Z) and connects internal case wiring (21b) with external case wiring. The connector has a connector housing (26) attached to the outside of the case end. The connector housing has a wiring outlet and a housing fixing portion. The wiring outlet draws external case wiring extending from a terminal connection portion inside the housing to the outside of the housing. The housing fixing portion fixes the connector housing to the case end. When viewed in the axial direction of the case, the terminal connection portion is located between the wiring outlet and the housing fixing portion.

Description

[Technical Field]

[0001] An embodiment of the present invention relates to a rotary compressor and a refrigeration cycle device. [Background technology]

[0002] In refrigeration cycle systems, rotary compressors are used to compress refrigerants. Rotary compressors have a vane-type compression mechanism inside a cylindrical case, and this compression mechanism is driven by a coaxially arranged electric motor to compress the refrigerant. The compressed refrigerant is discharged from a discharge port located at the top end of the case, passes through a heat exchanger, etc., and is then sucked back into the compression mechanism.

[0003] A connector is provided at the top end of the case to connect the power supply line to the motor unit. The connector pulls the power supply line from the connector housing attached to the outside of the case to the outside of the case, allowing this power supply line to be connected to an external power source. Because the power supply line is heavy, we wanted to minimize the impact of that weight on the connector. Because the case becomes hot due to the compressed fluid, we wanted to shorten the length of the power supply line along the outer surface of the case. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 58-174192 Summary of the Invention [Problem to be solved by the invention]

[0005] The problem that this invention aims to solve is to provide a rotary compressor and a refrigeration cycle device that can reduce the impact of the wiring weight of the connector placed on the outside of the case and can reduce the length of the power supply line along the outer surface of the case. [Means for solving the problem]

[0006] The rotary compressor of the embodiment has a case and a connector. The case is cylindrical and houses an electric mechanism and a compression mechanism. The connector is provided at one axial end of the case and connects the internal wiring to the external wiring. The connector has a connector housing attached to the outside of the case end. The connector housing has a wiring outlet and a housing fixing portion. The wiring outlet draws the external wiring extending from a terminal connection portion inside the housing to the outside of the housing. The housing fixing portion fixes the connector housing to the case end. When viewed in the axial direction of the case, the terminal connection portion is located between the wiring outlet and the housing fixing portion. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a circuit diagram of a refrigeration cycle device and a cross-sectional view of a rotary compressor according to an embodiment. [Figure 2] FIG. 3 is a side view of the upper case cover of the rotary compressor. [Figure 3] FIG. [Figure 4] IV arrow view of Figure 2. [Figure 5] FIG. 3 is a cross-sectional view taken along the arrows VV in FIG. 2. [Figure 6] Enlarged view of part VI in Figure 5. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, a refrigeration cycle device 1 and a rotary compressor 10 according to an embodiment will be described with reference to the drawings. 1 includes a circuit diagram of a refrigeration cycle apparatus 1 according to an embodiment and a cross-sectional view of a rotary compressor 10. The refrigeration cycle apparatus 1 includes the rotary compressor 10, a four-way valve 3, a first heat exchanger 4, an expansion device 5, a second heat exchanger 6, and a refrigerant flow path 8 through which a refrigerant (fluid) flows through these components. The refrigerant circulates through the refrigeration cycle apparatus 1 while undergoing a phase change.

[0009] The rotary compressor 10 is a rotary type rotary compressor. The rotary compressor 10 compresses the low-pressure gas refrigerant taken in to produce high-temperature, high-pressure gas refrigerant. An accumulator (gas-liquid separator) 2 is arranged upstream of the rotary compressor 10. The accumulator 2 separates the gas-liquid two-phase refrigerant and supplies the gas refrigerant to the rotary compressor 10.

[0010] The four-way valve 3 reverses the flow direction of the refrigerant in the refrigerant flow path 8 of the first heat exchanger 4, the expansion device 5, and the second heat exchanger 6. When the four-way valve 3 is in the state shown in Figure 1, the refrigerant discharged from the rotary compressor 10 flows through the first heat exchanger 4, the expansion device 5, and the second heat exchanger 6 in that order. At this time, the first heat exchanger 4 functions as a condenser (heat radiator), and the second heat exchanger 6 functions as an evaporator (heat absorber). When the four-way valve 3 is switched from the state shown in Figure 1, the refrigerant discharged from the rotary compressor 10 flows through the second heat exchanger 6, the expansion device 5, and the first heat exchanger 4 in that order. At this time, the second heat exchanger 6 functions as a condenser (heat radiator), and the first heat exchanger 4 functions as an evaporator (heat absorber).

[0011] The condenser dissipates heat from the high-temperature, high-pressure gas refrigerant discharged from the rotary compressor 10, and converts the high-temperature, high-pressure gas refrigerant into a high-pressure liquid refrigerant. The expansion device 5 reduces the pressure of the high-pressure liquid refrigerant sent from the condenser, and converts the high-pressure liquid refrigerant into a low-temperature, low-pressure two-phase gas-liquid refrigerant. For example, the expansion device 5 is an expansion valve. The evaporator converts the gas-liquid two-phase refrigerant sent from the expansion device 5 into low-pressure gas refrigerant. When the low-pressure gas-liquid two-phase refrigerant evaporates in the evaporator, it absorbs heat of vaporization from the surroundings, thereby cooling the surroundings. The low-pressure gas refrigerant that has passed through the evaporator is taken into the rotary compressor 10 described above via the accumulator 2.

[0012] In this way, the refrigerant, which is a working fluid, circulates while changing phases between gas and liquid in the refrigeration cycle apparatus 1. The refrigerant releases heat during the phase change from gas to liquid, and absorbs heat during the phase change from liquid to gas. The refrigeration cycle apparatus 1 performs heating, cooling, defrosting, etc. by utilizing the heat release or absorption of the refrigerant.

[0013] Fig. 2 is a side view of the case upper cover 17 of the rotary compressor 10 as seen from the second radial direction R2. Fig. 3 is a top view of the case upper cover 17 as seen from the axial direction. The Z direction in the drawing is the axial direction of the electric motor unit 14, the compression mechanism unit 16, and the case 11. Line C1 in the drawing indicates the central axis of the electric motor unit 14, the compression mechanism unit 16, and the case 11. For example, the Z direction in the present application is the vertical direction, and the electric motor unit 14 is housed on the upper side of the case 11 (one side in the Z direction), and the compression mechanism unit 16 is housed on the lower side of the case 11. Hereinafter, the axial direction may be referred to as the "axial direction Z" or the "vertical direction Z." The R direction in the drawing is the radial direction of the electric motor unit 14, the compression mechanism unit 16, and the case 11. In the drawing, the arrow R1 indicates a first radial direction among the radial directions, and the arrow R2 indicates a second radial direction R2 that is perpendicular to the first radial direction among the radial directions. Hereinafter, the first radial direction may be referred to as the "first radial direction R1," and the second radial direction R2 may be referred to as the "second radial direction R2."

[0014] Also referring to FIG. 1, the rotary compressor 10 includes a case 11, an electric motor unit 14, a shaft 15, and a compression mechanism unit 16.

[0015] Case 11 is formed in a cylindrical shape with both ends closed and sealed. Case 11 houses electric motor section 14, shaft 15, and compression mechanism section 16. Case 11 includes cylindrical case main body 12 with a bottom, and a bowl-shaped case upper cover (case end) 17 that closes the upper opening of case main body 12.

[0016] The lower part of the interior of case 11 contains lubricating oil that lubricates compression mechanism 16. The upper part of the interior of case 11 contains gaseous refrigerant compressed by compression mechanism 16. The gaseous refrigerant and lubricating oil inside case 11 are under high pressure. The gaseous refrigerant is supplied from discharge port 13 on the upper side of case 11 through refrigerant flow path 8 to four-way valve 3.

[0017] The electric motor unit 14, the shaft 15, and the compression mechanism unit 16 are arranged coaxially with the case 11. A rotor of the electric motor unit 14 is fixed to the upper side of the shaft 15. A rotor of the compression mechanism unit 16 is fixed to the lower side of the shaft 15. The electric motor unit 14 rotates the rotor via the shaft 15.

[0018] The case upper cover 17 includes a cylindrical body portion 17a that is coaxial with the outer peripheral wall of the case body 12, and a generally hemispherical upper surface portion 17b that is integrally formed above the body portion 17a. Upper surface portion 17b has discharge port 13 at, for example, its upper end (top). Discharge pipe 13a is provided on upper surface portion 17b, extending upward from the periphery of discharge port 13. Discharge port 13 and discharge pipe 13a are provided coaxially with case 11. Upper surface portion 17b forms flat surface portion 18 in a region located on one side of discharge port 13 and discharge pipe 13a in the first radial direction (indicated by arrow R1 in the figure), which is inclined so as to be positioned downward toward the outer periphery.

[0019] FIG. 4 is a view taken along arrow IV in FIG. 2 (a view taken along an arrow normal to the flat surface portion 18). FIG. 5 is a cross-sectional view taken along arrow VV in FIG. 2. FIG. 6 is an enlarged view of portion VI in FIG. 5. Arrow N in the figure indicates the normal direction. Hereinafter, the normal direction may be referred to as the "normal direction N." Arrow A in the figure indicates the inclination direction along the inclination of the flat surface portion 18, among the directions along the flat surface portion 18. Arrow B in the figure indicates the contour direction perpendicular to the inclination direction, among the directions along the flat surface portion 18. Hereinafter, the inclination direction may be referred to as the "inclination direction A," and the contour direction may be referred to as the "contour direction B."

[0020] On the flat surface portion 18, for example, on one side in the contour direction B of a center line 18C located in the center of the contour direction B, a pin-shaped male terminal 22 protruding to the outside of the case is provided. A plurality (three) of male terminals 22 are provided corresponding to the three phases UVW of the electric motor unit 14. The plurality of male terminals 22 are arranged in a triangular shape when viewed from the normal direction N. The plurality of male terminals 22 are fixed to the flat surface portion 18 via terminal holders 21a. Three-phase internal case wiring 21b extending from the stator of the electric motor unit 14 inside the case 11 is respectively connected to each male terminal 22. The plurality of male terminals 22 and the terminal holder 21a constitute a case-side connector 21 to which an external connector 24 can be connected from outside the case.

[0021] Hereinafter, the male terminals 22 will be referred to as the first male terminal 22U, the second male terminal 22V, and the third male terminal 22W. "Male terminal 22" is the name used when there is no need to distinguish between the first male terminal 22U, the second male terminal 22V, and the third male terminal 22W. In the arrangement of the male terminals 22 in this embodiment, the second male terminal 22V, the first male terminal 22U, and the third male terminal 22W are arranged in this order from the center (axis C1) of the upper surface portion 17b.

[0022] The external connector 24 is detachably attached to the case-side connector 21 in the normal direction of the flat portion 18. The external connector 24 includes a connector housing 26, female terminals 25, and a bolt fixing portion (housing fixing portion) 28.

[0023] The connector housing 26 is formed of an insulating material such as synthetic resin, and includes: a lower surface portion 26b that faces the flat surface portion 18 in the normal direction when attached to the case-side connector 21; an upper surface portion 17b that is spaced upward in the normal direction N from the lower surface portion 26b by the thickness of the connector housing 26 and has an outer shape that overlaps with the lower surface portion 26b when viewed from the normal direction N; and a side surface portion 26c that extends in the normal direction N between the outer edges of the outer shapes of the upper and lower surface portions 26a, 26b when viewed from the normal direction N.

[0024] Each of the upper and lower surface portions 26a, 26b has an irregular pentagonal shape with the bolt fixing portion 28 located at one vertex when viewed from the normal direction N. A wiring outlet 27 is formed between one side of the pentagonal shape of each of the upper and lower surface portions 26a, 26b opposite to the bolt fixing portion 28.

[0025] A plurality (three) of female terminals 25 are provided corresponding to the three UVW phases of the electric motor unit 14. With the external connector 24 attached to the case-side connector 21, a male terminal 22 corresponding to each phase is inserted into each female terminal 25. Each female terminal 25 has a flat plate portion 25a that is linear and has a specified width when viewed from the normal direction N, and a pair of elastic pieces 25b that are bent appropriately from both widthwise ends of the flat plate portion 25a and integrally formed therewith.

[0026] Each female terminal 25 holds the male terminal 22 by inserting it between a pair of elastic pieces 25b, and the outer peripheral surface of the male terminal 22 comes into contact with the pair of elastic pieces 25b and the flat plate portion 25a, thereby electrically connecting with the male terminal 22. Each female terminal 25 clamps the male terminal 22 with the elastic force of the pair of elastic pieces 25b and holds the male terminal 22 with a specified engagement force. Each female terminal 25 holds the corresponding male terminal 22 with a specified engagement force, thereby preventing the external connector 24 from detaching from the case-side connector 21.

[0027] Hereinafter, the female terminals 25 will be referred to as first female terminal 25U, second female terminal 25V, and third female terminal 25W. "Female terminal 25" is the term used when there is no need to distinguish between first female terminal 25U, second female terminal 25V, and third female terminal 25W. First female terminal 25U engages with first male terminal 22U, second female terminal 25V engages with second male terminal 22V, and third female terminal 25W engages with third male terminal 22W. The contact point (terminal contact) between flat plate portion 25a of first female terminal 25U and the outer peripheral surface of first male terminal 22U is indicated by reference symbol 23U, the contact point (terminal contact) between flat plate portion 25a of second female terminal 25V and the outer peripheral surface of second male terminal 22V is indicated by reference symbol 23V, and the contact point (terminal contact) between flat plate portion 25a of third female terminal 25W and the outer peripheral surface of third male terminal 22W is indicated by reference symbol 23W.

[0028] The first female terminal 25U is inserted into and fixed in a first slot 29U formed in the connector housing 26. Similarly, the second female terminal 25V is inserted into and fixed in a second slot 29V, and the third female terminal 25W is inserted into and fixed in a third slot 29W.

[0029] The first slot 29U opens toward one side in a first direction D1 along the flat portion 25a of the first female terminal 25U, allowing the case external wiring 31U to be drawn toward the first direction D1. The second slot 29V opens toward one side in a second direction D2 along the flat portion 25a of the second female terminal 25V, allowing the case external wiring 31V to be drawn toward the second direction D2. The third slot 29W opens toward one side in a third direction D3 along the flat portion 25a of the third female terminal 25W, allowing the case external wiring 31W to be drawn toward the third direction D3. The case external wiring 31U, 31V, 31W drawn toward the first direction D1, second direction D2, and third direction D3 from each slot 29U, 29V, 29W, respectively, are curved appropriately and arranged in parallel to each other before reaching the wiring outlet 27.

[0030] The first direction D1 is inclined with respect to the contour direction B of the flat surface portion 18 so that one side of the first direction D1 is positioned lower (toward the outer periphery) in the inclination direction A. The second direction D2 is inclined with respect to the contour direction B of the flat surface portion 18 so that one side of the second direction D2 is positioned lower (toward the outer periphery) in the inclination direction A. For example, the inclination angle of the second direction D2 with respect to the contour direction B is smaller than the inclination angle of the first direction D1 with respect to the contour direction B. The third direction D3 is approximately parallel to the contour direction B of the flat surface portion 18.

[0031] Three-phase external case wiring 31U, 31V, 31W extending from flat plate portion 25a of each female terminal 25 to one side in the first direction D1, one side in the second direction D2, and one side in the third direction D3 are guided while oriented in the same direction toward wiring outlet 27 of connector housing 26, and are drawn out from wiring outlet 27 to the outside of connector housing 26. Three-phase external case wiring 31U, 31V, 31W are each in the form of a cable in which electric wires are covered with a sheath, and are routed outside case 11 as appropriate.

[0032] The bolt fixing portion 28 includes, for example, a stud bolt 28a provided on the flat portion 18 and protruding along the normal direction N, and a bolt insertion portion 28b provided on the connector housing 26 and through which the stud bolt 28a is inserted. In the drawing, reference numeral 28c denotes a bolt insertion hole that passes through the bolt insertion portion 28b in the normal direction N. In the drawing, line C2 denotes the central axis of the stud bolt 28a and the bolt insertion hole 28c.

[0033] The stud bolt 28a protrudes outward from the case on the other side of the contour direction B beyond the center line 18C of the flat surface portion 18. With the external connector 24 attached to the case-side connector 21, the stud bolt 28a is inserted through the bolt insertion hole 28c, with its tip protruding toward the top surface 26a of the connector housing 26. A nut (not shown) is screwed onto and tightened to the tip of the stud bolt 28a protruding toward the top surface 26a of the connector housing 26. This fixes the connector housing 26, and ultimately the external connector 24, to the case-side connector 21.

[0034] The configuration is not limited to providing the stud bolt 28a on the case side, but may also be such that a nut portion is provided on the case side, and a bolt (not shown) is inserted into the bolt insertion hole 28c from the upper surface portion 26a side of the connector housing 26, and this bolt is screwed into the nut portion on the case side and tightened.

[0035] The arrangement of the three-phase external case wirings 31U, 31V, and 31W will be described in detail below. The case external wiring 31U, 31V, 31W is drawn out from the wiring outlet 27 to the outside of the connector housing 26, and then curves vertically downward to extend to an external power source (not shown). The case external wiring 31U, 31V, 31W has a considerable weight, and the weight of the case external wiring 31U, 31V, 31W extending downward is added to the area around the wiring outlet 27 of the external connector 24.

[0036] Bolt fixing portions 28 that fix connector housing 26 to case upper cover 17 are located farther from wire outlet 27 than the connection positions (terminal connection portions) of male terminals 22 and female terminals 25.

[0037] Here, connector housing 26 extends from wiring outlet 27 to bolt fixing portion 28 when viewed from normal direction N. A first direction extending between wiring outlet 27 and bolt fixing portion 28 in connector housing 26 is the longitudinal direction of connector housing 26. Connector housing 26 has wiring outlet 27 at one end in the longitudinal direction, and has bolt fixing portion 28 at the other end in the longitudinal direction. The portion (terminal connection portion) where three-phase terminal contacts 23U, 23V, 23W are located is located in the middle portion of connector housing 26 in the longitudinal direction (between both end portions).

[0038] When the weight of the case external wiring 31U, 31V, 31W is applied to the periphery (point of force) of the wiring outlet 27 of the connector housing 26, an action is generated that presses the periphery (point of action) of the terminal contacts 23U, 23V, 23W toward the flat portion 18, with the bolt fixing portion 28 as the fulcrum. Depending on the relative positions of the wiring outlet 27, the bolt fixing portion 28, and the terminal contacts 23U, 23V, 23W, the weight of the case external wiring 31U, 31V, 31W may generate a force that tries to move or separate the periphery of the terminal contacts 23U, 23V, 23W from the flat portion 18.

[0039] In contrast, in the configuration of the embodiment, the weight of the external wiring 31U, 31V, 31W presses the periphery of the terminal contacts 23U, 23V, 23W against the flat portion 18, thereby maintaining a good connection state of the terminal contacts 23U, 23V, 23W.

[0040] The case 11 of the compressor 10 compresses gas, and therefore is susceptible to high temperatures due to the heat of the compressed air. In this embodiment, the case external wirings 31U, 31V, and 31W are routed so that they are not easily affected by the heat of the case 11.

[0041] In the figure, line L1 indicates a first straight line connecting the center position of case upper cover 17 (for example, the position where the outer surface of upper surface portion 17b intersects with central axis C1, hereinafter referred to as center position C1) and terminal contact 23V that is farthest from this center position C1. In the figure, line L2 indicates a second straight line along wiring drawing direction D2, which is the direction in which case external wiring 31V is drawn from female terminal 25V (terminal contact 23V). Second straight line L2 corresponds to an extension line extending from terminal contact 23V toward bolt fixing portion 28.

[0042] In the embodiment, the first angle θ1 formed by the first straight line L1 and the second straight line L2 is preferably small. For example, if the first angle θ1 between the straight lines L1 and L2 is 0 degrees, the case external wiring 31U, 31V, and 31W exiting the wiring outlet 27 will extend radially from the case 11, and the length over which the case external wiring 31U, 31V, and 31W pass above the case upper cover 17 can be shortened. If it is difficult to set the first angle θ1 to 0 degrees due to the arrangement of the terminal connection portion and the stud bolt 28a, the length over which the case external wiring 31U, 31V, and 31W pass above the case upper cover 17 can be shortened by making the first angle θ1 as small as possible. In the embodiment, the first angle θ1 is set to 45 degrees or less, preferably 30 degrees or less.

[0043] By reducing the first angle θ1 between the straight lines L1 and L2, the length over which the case external wiring 31U, 31V, and 31W overlap with the case upper cover 17 can be reduced compared to when the first angle θ1 is large. Because the case 11 becomes hot during operation of the compressor 10, it is preferable that the length over which the case external wiring 31U, 31V, and 31W pass above the case upper cover 17 be short.

[0044] When viewed from the axial direction Z of the case 11, the first straight line L1 is disposed on one side of the second straight line L2, and the third straight line L3 is disposed on the other side, connecting the terminal contact 23V and the axial center C2 of the bolt fixing portion 28. The second angle θ2 formed by the straight lines L2 and L3 is set to, for example, 30 degrees or less. When the second angle θ2 is set to a small angle, it is possible to extend the case external wirings 31U, 31V, and 31W by effectively utilizing the longitudinal length of the connector housing 26. In other words, it is possible to extend the length of the case external wirings 31U, 31V, and 31W passing through the connector housing 26.

[0045] The second angle θ2 is set to be smaller than the first angle θ1. In this case, bolt fixing portion 28 is disposed close to an extension line (second straight line L2) of wire drawing direction D2 from terminal 25V. Fastening and fixing the extension portion of connector housing 26 in wire drawing direction D2 makes it easier to suppress movement of connector housing 26 due to the weight, vibration, etc. of case exterior wiring 31U, 31V, 31W.

[0046] The wiring outlet 27 of the connector housing 26 is disposed outside the outer peripheral surface of the case 11 when viewed in the axial direction Z of the case 11. The connector housing 26 guides the case external wiring 31U, 31V, 31W beyond the outer peripheral surface of the case when viewed from the axial direction Z of the case 11. Therefore, the case external wiring 31U, 31V, 31W coming out of the wiring outlet 27 is less likely to come into contact with the case 11 even if it bends downward.

[0047] As described above, the rotary compressor 10 of the embodiment comprises a cylindrical case 11 that houses the electric mechanism 14 and the compression mechanism 16, and a connector (external connector 24) that is provided at one case end (case upper cover 17) of the case 11 in the axial direction Z and connects the case internal wiring 21b and the case external wiring 31U, 31V, 31W, and the external connector 24 comprises a connector housing 26 that is attached to the outside of the case upper cover 17, and the connector housing 26 comprises a wiring outlet 27 that draws out the case external wiring 31U, 31V, 31W extending from terminal connection portions (terminal contacts 23U, 23V, 23W) inside the housing to the outside of the housing, and a bolt fixing portion 28 that fixes the connector housing 26 to the case upper cover 17, and the terminal connection portion is arranged between the wiring outlet 27 and the bolt fixing portion 28 in a first direction spanning between the wiring outlet 27 and the bolt fixing portion 28 when viewed from the axial direction Z of the case 11.

[0048] According to this configuration, the terminal connection portion including the three-phase terminal contacts 23U, 23V, 23W is located in the middle in the first direction (longitudinal direction of connector housing 26) between wiring outlet 27 of connector housing 26 and bolt fixing portion 28, so that when the weight of external wiring 31U, 31V, 31W is applied to the periphery (point of force) of wiring outlet 27, the bolt fixing portion 28 acts as a fulcrum to press the terminal connection portion toward flat portion 18. This makes it possible to maintain a good connection state of terminal contacts 23U, 23V, 23W.

[0049] In the rotary compressor 10 of the embodiment, when viewed from the axial direction Z of the case 11, the angle θ1 formed by the first straight line L1 connecting the center position C1 of the case upper cover 17 and the terminal contact 23V farthest from this center position C1 and the second straight line L2 along the wiring withdrawal direction D2, which is the direction in which the case external wiring 31V is withdrawn from the terminal contact 23V, is set to 45 degrees or less, preferably 30 degrees or less.

[0050] According to this configuration, by setting the angle θ1 formed by the line L1 passing through the center position C1 of the case upper cover 17 and the line L2 along the wire drawing direction D2 to a specified value or less, the wire drawing direction D2 from the wire drawing outlet 27 approaches the radial direction of the case 11. This makes it possible to shorten the length over which the case external wires 31U, 31V, and 31W drawn out together from the wire drawing outlet 27 pass above the case upper cover 17. This makes it possible to make the case external wires 31U, 31V, and 31W less susceptible to heat from the case upper cover 17.

[0051] In the rotary compressor 10 of the embodiment, when viewed from the axial direction Z of the case 11, a first straight line L1 passing through the center position C1 of the case upper cover 17 is arranged on one side of a second straight line L2 along the wiring withdrawal direction D2, and a third straight line L3 connecting the terminal contact 23V and the center position C2 of the bolt fixing portion 28 is arranged on the other side, and the second angle θ2 formed by the second straight line L2 and the third straight line L3 is set to 30 degrees or less.

[0052] According to this configuration, by setting the angle θ2 formed by the straight line L2 along the wire drawing direction D2 and the third straight line L3 passing through the terminal contact 23V and the bolt fixing portion 28 to a specified value or less, the longitudinal direction of the connector housing 26 and the wire drawing direction D2 from the terminal contact 23V become closer to each other. Therefore, by utilizing the length of the connector housing 26, it is possible to increase the length of the case external wires 31U, 31V, and 31W that pass through the connector housing 26 and are all drawn out from the wire drawing outlet 27. This makes it possible to reduce the effect of heat from the case upper cover 17 on the case external wires 31U, 31V, and 31W.

[0053] In the rotary compressor 10 of the embodiment, the second angle θ2 is set to an angle smaller than the first angle θ1. According to this configuration, by setting second angle θ2 smaller than first angle θ1, bolt fixing portion 28 approaches the extension line (straight line L2) of wire drawing direction D2 from terminal contact 23V. As a result, bolt fixing portion 28 can effectively suppress movement of connector housing 26 caused by the weight of external case wires 31U, 31V, 31W drawn out together from wire drawing outlet 27.

[0054] In the rotary compressor 10 of the embodiment, the wiring outlet 27 is disposed outside the outer circumferential surface of the case 11 when viewed from the axial direction Z of the case 11. According to this configuration, the wiring outlet 27 is disposed outside the outer peripheral surface of the case 11, so that the case external wirings 31U, 31V, 31W drawn out from the wiring outlet 27 are less likely to come into contact with the case 11 even if they bend downward. This makes it possible to make the case external wirings 31U, 31V, 31W less susceptible to heat from the case 11.

[0055] The refrigeration cycle apparatus 1 of the embodiment has the rotary compressor 10 described above, one of the first heat exchanger 4 and the second heat exchanger 6 functioning as a heat radiator, an expansion device 5, and the other of the first heat exchanger 4 and the second heat exchanger 6 functioning as a heat absorber. The heat radiator is connected to the rotary compressor 10. The expansion device 5 is connected to the heat radiator. The heat absorber is connected to the expansion device 5. The presence of the rotary compressor 10 described above reduces the effect of the wiring weight of the external connector 24 arranged outside the case, and also reduces the length of the power supply lines (external case wiring 31U, 31V, 31W) along the outer surface of the case 11.

[0056] According to at least one embodiment described above, the connector housing has a wiring outlet and a housing fixing portion. The wiring outlet draws the external wiring extending from the terminal connection portion inside the housing to the outside of the housing. The housing fixing portion fixes the connector housing to the end of the case. When viewed from the axial direction Z of the case, the terminal connection portion is disposed between the wiring outlet and the housing fixing portion. This reduces the impact of the weight of the wiring of the external connector 24 disposed outside the case.

[0057] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are within the scope and spirit of the invention, as well as the inventions described in the scope of the utility model registration claims and their equivalents. [Explanation of symbols]

[0058] 1...refrigeration cycle device, 4...first heat exchanger (heat radiator, heat sink), 5...expansion device, 6...second heat exchanger (heat sink, heat radiator), 10...rotary compressor, 11...case, 14...electric mechanism section, 16...compression mechanism section, 17...case upper cover (case end), 18...flat section, 21...case side connector (connector), 21a...terminal holder, 21b...internal case wiring, 23U, 23V, 23W...terminal contact, 24...external connector (connector), 26...connector housing, 27...wiring outlet, 28...bolt fixing section (housing fixing section), 31U, 31V, 31W...external case wiring, C1...center position of upper case cover, C2...center position of bolt fixing section, 2...wiring drawing direction, L1...first straight line, L2...second straight line, L3...third straight line, Z...axial direction, θ1...first angle, θ2...second angle

Claims

1. a cylindrical case that houses an electric mechanism and a compression mechanism; a connector provided at one end of the case in the axial direction thereof for connecting wiring inside the case with wiring outside the case; The connector includes a connector housing attached to the outside of the case end, the connector housing including a wiring outlet for drawing the external wiring extending from a terminal connection portion inside the housing to the outside of the housing, and a housing fixing portion for fixing the connector housing to the case end, The terminal connection portion is disposed between the wiring outlet and the housing fixing portion as viewed in the axial direction of the case. Rotary compressor.

2. When viewed from the axial direction of the case, a first angle formed by a first line connecting a center position of the case end and a terminal contact of the terminal connection portion and a second line along a wiring drawing direction in which the wiring outside the case is drawn from the terminal contact is set to 45 degrees or less. The rotary compressor according to claim 1 .

3. When viewed from the axial direction of the case, the first straight line L1 is disposed on one side of the second straight line, and a third straight line connecting the terminal contact and a center position of the housing fixing portion is disposed on the other side of the second straight line, a second angle formed by the second straight line and the third straight line is set to 30 degrees or less; The rotary compressor according to claim 2 .

4. The second angle is set to an angle smaller than the first angle. The rotary compressor according to claim 3 .

5. When viewed in the axial direction of the case, the wiring outlet is disposed outside the outer circumferential surface of the case. The rotary compressor according to any one of claims 1 to 4.

6. The rotary compressor according to claim 1 or 2; a radiator connected to the rotary compressor; an expansion device connected to the heat sink; a heat sink connected to the expansion device. Refrigeration cycle equipment.

Images