Outdoor unit and heat pump device

Abstract

To provide an outdoor unit with excellent designability enabling a joint of grilles to be unnoticeable.SOLUTION: An outdoor unit includes: a refrigerant circuit that has a compressor and a heat source side heat exchanger; an air blower that generates wind passing through the heat source side heat exchanger; a casing that accommodates the refrigerant circuit and the air blower; and a first grille and a second grille that cover the casing. The first grille and the second grille are arranged by being joined to each other so as to configure an integrated grille external appearance shape. The first grille has a first insertion flange provided on the back side, projecting toward the second grille and abutting on the back side of the second grille. The second grille has a second insertion flange provided on the back side, projecting toward the first grille and abutting on the back side of the first grille. The first insertion flange and the second insertion flange are alternately formed along a joint between the first grille and the second grille.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to an outdoor unit and a heat pump device. [Background technology]

[0002] Patent Document 1 discloses a heat source device including a main body with a compressor and a blower, a first grill covering the compressor from the front, and a second grill arranged in parallel with the first grill and covering the blower from the front. Patent Document 1 discloses a technique for making the fastening members less visible from the front by engaging the first grill with the second grill from the side and fastening the first grill to the main body from the outside side with a fastening means. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-187051 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides an outdoor unit with excellent design in which the seams of the grill are less noticeable. [Means for solving the problem]

[0005] The outdoor unit of the present disclosure comprises a refrigerant circuit having a compressor and a heat source side heat exchanger, a blower that generates air that passes through the heat source side heat exchanger, a housing that accommodates the refrigerant circuit and the blower, and a first grill and a second grill that cover the housing, the first grill and the second grill are joined together to form an integrated grill appearance shape, the first grill has a first plug flange provided on the back side that protrudes toward the second grill and abuts the back side of the second grill, the second grill has a second plug flange provided on the back side that protrudes toward the first grill and abuts the back side of the first grill, and the first plug flange and the second plug flange are formed alternately along the seam between the first grill and the second grill. The heat pump device in the present disclosure includes the outdoor unit described above. Effect of the Invention

[0006] The outdoor unit of the present disclosure can easily ensure the accuracy of the joining of the separate first and second grilles without relying on the accuracy of the shapes of the first and second grilles, making it possible to provide an outdoor unit with excellent design in which the seams of the grilles are less noticeable. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of an outdoor unit of a heat pump device according to a first embodiment. [Diagram 2] FIG. 1 is an exploded perspective view of a housing of an outdoor unit of a heat pump device according to a first embodiment, an air-blower grille, and a decorative grille. [Diagram 3] Refrigeration cycle circuit diagram of a heat pump device according to a first embodiment [Figure 4] FIG. 1 is an exploded perspective view of a blower chamber grill according to the first embodiment; [Diagram 5] A diagram corresponding to the main part of FIG. 4 [Figure 6] FIG. 5 is a diagram corresponding to a main part of FIG. 4, but different from FIG. [Figure 7] A rear view of a joint of the air blower grill in the first embodiment. [Figure 8] Cross-sectional view of line VIII-VIII in Figure 7 [Figure 9] Cross-sectional view of line IX-IX in Figure 7 [Figure 10] An enlarged view of the part indicated by the arrow X in Figure 7. [Figure 11] FIG. 13 is a perspective view showing the vicinity of a joint of an outer side frame portion of the air blower grille according to the first embodiment, as seen from the back side; [Figure 12] FIG. 1 is a side view from the back showing the vicinity of a joint of an outer side frame part of an air blower grill in the first embodiment. [Figure 13] Sectional view of line XIII-XIII in FIG. [Figure 14] Sectional view of line XIV-XIV in Figure 12 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] (The knowledge and other information that formed the basis of this disclosure) At the time when the inventors came up with the idea of ​​the present disclosure, there was a technique for covering the housing of an outdoor unit with multiple grilles. However, the inventors discovered that the conventional technique had a problem in that the seams between the grilles were easily noticeable, and in order to solve this problem, they came up with the subject matter of the present disclosure. Therefore, the present disclosure provides an outdoor unit with excellent design in which the seams of the grill are less noticeable.

[0009] Hereinafter, the embodiments will be described in detail with reference to the drawings. However, more detailed explanation than necessary may be omitted. For example, detailed explanation of already well-known matters or duplicate explanation of substantially the same configuration may be omitted. This is to avoid the following explanation becoming more redundant than necessary and to facilitate understanding by those skilled in the art. It should be noted that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0010] (Embodiment 1) Hereinafter, the first embodiment will be described with reference to FIGS.

[0011] [1-1. Configuration] [1-1-1. Configuration of the outdoor unit of the heat pump device] FIG. 1 is a perspective view of an outdoor unit 1 of a heat pump device HP according to the first embodiment. The heat pump device HP has an outdoor unit 1 that is installed outdoors. The outdoor unit 1 is equipped with a substantially rectangular parallelepiped housing 10. In this embodiment, all of the components of the housing 10 are formed from steel plates. An air blower chamber grill 34 and a decorative grill 35 that cover the front side (front face side) of the housing 10 are supported on the housing 10.

[0012] FIG. 2 is an exploded perspective view of the housing 10, the air-blower chamber grill 34, and the decorative grill 35 of the outdoor unit 1 of the heat pump unit HP in the first embodiment. The housing 10 comprises a bottom panel 11 that forms the bottom surface of the housing 10, a rear side panel 12 that covers the right side (one side in the left-right direction) of the housing 10 from the rear, a front side panel 13 that covers the right side (one side in the left-right direction) of the housing 10 from the front, a front panel 14 that covers the left side (the other side in the left-right direction) of the housing 10 from the front, and a top panel 15 that covers the top surface of the housing 10.

[0013] A partition plate 16 extending in the vertical direction is disposed inside the housing 10. The partition plate 16 is a rectangular plate having a thickness in the left-right direction. The internal space of the housing 10 is divided into left and right spaces by the partition plate 16. The partition plate 16 is held at its rear side (rear side) by screws to an end plate of an air heat exchanger 25 (see FIG. 3) disposed on the rear side. The partition plate 16 is also held at its lower side by screws to the bottom panel 11. The partition plate 16 defines a machine chamber 17 on the right side and an air blower chamber 18 on the left side inside the housing 10.

[0014] The machine room 17 accommodates various devices forming a refrigerant circuit 20 (see FIG. 3), such as a compressor 21 and a water heat exchanger 23, as well as refrigerant piping 26 (see FIG. 3) connecting these devices to each other. The water heat exchanger 23 is, for example, a plate heat exchanger. The front of the machine room 17 is closed by the front side panel 13.

[0015] An air heat exchanger 25 (see FIG. 3) constituting the refrigerant circuit 20 is installed in the blower chamber 18. The air heat exchanger 25 of this embodiment extends along the height direction of the housing 10 and is formed in a substantially L-shape so as to be exposed to the back and side of the housing 10. Specifically, the air heat exchanger 25 has a back portion exposed to the back of the housing 10 and a side portion exposed to the side of the housing 10. The air heat exchanger 25 is installed so that the right end of the back portion is connected to the left end of the rear side panel 12 of the housing 10 and the front end of the side portion is connected to the left end of the front panel 14 of the housing 10. As the air heat exchanger 25, for example, a fin tube type heat exchanger is used.

[0016] A blower support 30 extending in the vertical direction is installed in front of the rear part of the air heat exchanger 25. A pair of blower supports 30 are installed on the left and right. The blower supports 30 are bolted to the bottom panel 11 of the housing 10 and held therein. A plurality of blowers 31, 32 are installed in the vertical direction on the blower support 30. In this embodiment, the blower support 30 supports a lower blower (first blower) 31 and an upper blower (second blower) 32 above the lower blower 31. Therefore, the housing 10 is more likely to be taller than when there is only one blower 31, 32.

[0017] The blowers 31 and 32 each include a motor 31a and 32a, and a fan blade 31b and 32b fixed to the drive shaft of the motor 31a and 32a. For example, an axial flow fan equipped with a propeller-shaped impeller is used as the blowers 31 and 32. In the blower chamber 18 of the present embodiment, an air heat exchanger 25, a blower support 30, and blowers 31 and 32 are installed. The front of the blower chamber 18 is closed by a front panel 14 .

[0018] An electrical box 33 is disposed inside the upper part of the housing 10. The electrical box 33 is disposed above the upper blower 32. In this embodiment, the electrical box 33 is supported by the partition plate 16 and the blower support 30. A control device (not shown) is housed in the electrical box 33. This control device controls each part housed in the outdoor unit 1 of the heat pump device 1, such as the blowers 31 and 32, the compressor 21, the four-way valve 22 (see FIG. 3), and the expansion device 24 (see FIG. 3). In addition, this control device is connected to sensors attached to each part of the refrigerant circuit 20 and the water supply pipe 27 (see FIG. 3), and receives output signals transmitted from the sensors. Specifically, the control device receives output signals from the pressure sensors PS1 and PS2 (see FIG. 3), the temperature sensors TS1 and TS2 (see FIG. 3), the refrigerant sensor RS1 (see FIG. 3), and the like.

[0019] At the front side of the housing 10, the front panel 14 is provided with two openings 14a, 14b corresponding to the positions of the fans 31, 32. The fans 31, 32 are exposed forward from the openings 14a, 14b. Four (plural) fixing parts 14c to which the air blower chamber grill 34 is fixed are provided around the lower opening 14a. Four (plural) fixing parts 14d to which the air blower chamber grill 34 is fixed are provided around the upper opening 14b. The number of fixing parts 14c, 14d is not limited to four, and may be two or more.

[0020] On the right side of the front panel 14, fastening portions 13a, 13b to which the decorative grille 35 is fastened are provided at the right end (outer end in the left-right direction) of the front side panel 13. In detail, a pair of upper and lower fastening portions 13a is provided at the bottom of the lower half of the front side panel 13. In addition, a pair of upper and lower fastening portions 13b is provided at the top of the upper half of the front side panel 13.

[0021] In the outdoor unit 1 of the heat pump device HP, an air blower chamber grill 34 is attached to the front panel 14. In addition, a decorative grill 35 is attached to the front side panel 13. Thus, the front side of the air blower chamber 18 of the housing 10 is covered by the air blower chamber grill 34, and the front side of the machine chamber 17 of the housing 10 is covered by the decorative grill 35. In this embodiment, the air blower chamber grill 34 and the decorative grill 35 are molded from resin. The air blower chamber grill 34 is formed in a lattice shape that allows ventilation. Therefore, air is blown into and out of the air blower chamber 18 through the air blower chamber grill 34 and the openings 14a, 14b.

[0022] In this embodiment, the air blower chamber grill 34 has a lower grill 40 and an upper grill 60. In other words, the air blower chamber grill 34 has a divided structure consisting of the lower grill 40 and the upper grill 60. Moreover, the decorative grill 35 has a lower grill 80 and an upper grill 100. In other words, the decorative grill 35 has a divided structure consisting of the lower grill 80 and the upper grill 100. In this way, by making the air blower chamber grill 34 and the decorative grill 35, which tend to be large, into a divided structure, portability is improved and the installation work of the air blower chamber grill 34 and the decorative grill 35 to the housing 10 is facilitated.

[0023] [1-1-2. Refrigerant circuit configuration] FIG. 3 is a refrigeration cycle circuit diagram of the heat pump device HP in the first embodiment. As shown in FIG. 3, a compressor 21, a four-way valve 22, a water heat exchanger (use side heat exchanger) 23, an expansion device 24 and an air heat exchanger (heat source side heat exchanger) 25 are connected in a ring shape via predetermined refrigerant piping 26 to form a refrigerant circuit 20. A predetermined water supply pipe 27 is connected to the water heat exchanger 23, and heat exchange with the refrigerant circulating through the refrigerant circuit 20 is performed in the water heat exchanger 23.

[0024] The refrigerant compressed by compressor 21 to a high temperature and high pressure flows as shown by the solid arrow in Fig. 3 and is sent to water heat exchanger 23, where it is cooled and condensed by heat exchange with water flowing through water supply pipe 27. The water receives heat from the refrigerant and becomes hot water, which is then supplied to, for example, a user device (not shown). The refrigerant discharged from the water heat exchanger 23 is decompressed in the expansion device 24 and evaporated, and undergoes heat exchange in the air heat exchanger 25 to become a gas refrigerant and is returned to the compressor 21 again.

[0025] 3, the refrigerant flows, exchanges heat with outside air in air heat exchanger 25, is decompressed in expansion device 24, and is sent to water heat exchanger 23, thereby cooling the water flowing through water supply pipe 27. The cold water is supplied to a user device (not shown).

[0026] In this embodiment, a flammable refrigerant is used as the refrigerant. The flammable refrigerant may be R32. Alternatively, the flammable refrigerant may be a mixed refrigerant containing 70 weight percent or more of R32. Alternatively, the flammable refrigerant may be propane. Alternatively, the flammable refrigerant may be a mixed refrigerant containing propane. R32 and propane are both refrigerants with low GWP and low environmental impact.

[0027] The refrigerant circuit 20 is provided with sensors that detect various physical quantities. Each portion of the refrigerant piping 26 is provided with a temperature sensor (not shown) that measures the temperature of the piping surface. The suction side and discharge side of the compressor 21 are provided with pressure sensors PS1 and PS2 that measure the pressure of the refrigerant, respectively. Furthermore, the water supply piping 27 is provided with temperature sensors TS1 and TS2 that detect the water temperature on the upstream and downstream sides of the water heat exchanger 23. Furthermore, a refrigerant sensor RS1 that detects leakage of refrigerant from the air heat exchanger 25 is provided near the air heat exchanger 25. The expansion device 24 and the four-way valve 22 each have an actuator for actuating them.

[0028] In the present embodiment, the devices constituting the refrigerant circuit 20 and a portion of the water supply pipe 27 are disposed inside the housing 10. Therefore, the compressor 21, the water heat exchanger 23, and the air heat exchanger 25 constituting the refrigerant circuit 20, and a portion of the water supply pipe 27 are provided in the outdoor unit 1. In this embodiment, the heat pump device HP is a so-called heat pump water heater. Therefore, the heat pump device HP in this embodiment includes the outdoor unit 1, and also includes a hot water storage device (a user device not shown) to which a water supply pipe 27 is connected and which is configured to be able to supply water to a water supply port. The hot water storage device is generally installed outdoors, but may be configured to be able to be installed indoors.

[0029] [1-1-3. Configuration of the ventilation room grill] FIG. 4 is an exploded perspective view of the blower room grill 34 in the first embodiment. In this embodiment, the air blower chamber grill 34 has a lower grill 40 and an upper grill 60. The lower grill 40 and the upper grill 60 have a generally rectangular shape when viewed from the front. The lower grill 40 and the upper grill 60 are generally the same size. The lower grill 40 is formed in a generally rectangular shape that is larger than the lower opening 14a of the front panel 14. The upper grill 60 is formed in a generally rectangular shape that is larger than the upper opening 14b of the front panel 14.

[0030] [1-1-4. Configuration of the first grill] The lower grill (first grill) 40 has a lower frame portion 41 extending in the left-right direction. The lower frame portion 41 is block-shaped. The cross-sectional shape (hereinafter referred to as the "predetermined cross-sectional shape") of the lower frame portion 41 perpendicular to the up-down direction (joint direction) is a flat, generally U-shaped shape. An outer side frame portion 42 extending upward is formed at the left rear end of the lower frame portion 41. An inner side frame portion 43 (see FIG. 2) extending upward is formed at the right rear end of the lower frame portion 41. An upper frame portion 44 is formed at the upper front end of the outer side frame portion 42 and the upper front end of the inner side frame portion 43.

[0031] The upper frame portion 44 is a plate-like member having a thickness in the vertical direction and extending in the horizontal direction. The upper frame portion 44 has a predetermined cross-sectional shape that tapers toward the rear. The upper frame portion 44 has a predetermined cross-sectional shape in the front portion that is the same as that of the lower frame portion 41. That is, the predetermined cross-sectional shape of the front portion of the upper frame portion 44 is a flattened, substantially U-shaped shape. An opening that penetrates in the front-rear direction and allows ventilation is formed in the area surrounded by the lower frame portion 41, the outer frame portion 42, the inner frame portion 43, and the upper frame portion 44. This opening is covered by a lattice-shaped grill portion 45.

[0032] Fig. 5 is a view corresponding to the main part of Fig. 4. Fig. 6 is a view corresponding to the main part of Fig. 4 but different from Fig. 5. The grill section 45 has a plurality of horizontal plates (plates extending in a direction perpendicular to the joining direction) 45a, and vertical plates (plates extending in the joining direction) 45b arranged between the horizontal plates 45a. The horizontal plate 45a has a thickness in the up-down direction and extends in the left-right direction. The horizontal plate 45a has a predetermined cross-sectional shape that is flat and generally U-shaped, similar to the upper frame portion 44 and the lower frame portion 41. The horizontal plates 45a are disposed at a predetermined interval in the up-down direction. The horizontal plate 45a is supported in a state in which it straddles between the front end of the outer frame portion 42 and the front end of the inner frame portion 43.

[0033] Between adjacent horizontal plates 45a, vertical plates 45b extending in the up-down direction are disposed. The vertical plates 45b are disposed at a predetermined interval in the left-right direction. The vertical plates 45b are formed alternately in stages in the up-down direction. The vertical plates 45b connect the horizontal plates 45a and 45a. The vertical plates 45b maintain the interval between the horizontal plates 45a and 45a. The vertical plates 45b are formed at the rear end of the horizontal plates 45a. The horizontal plates 45a and the vertical plates 45b form a lattice-shaped grill section 45 of the present embodiment. The grill section 45 is supported by the lower frame section 41, the outer frame section 42, the inner frame section 43, and the upper frame section 44.

[0034] In the lower grill 40, the outer end surface of the lower frame portion 41, the outer end surface of the outer side frame portion 42, the outer end surface of the inner side frame portion 43, the outer end surface of the upper frame portion 44, and the outer end surface of the side plate 45a form a virtual flat outer surface 40a of the lower grill 40 (see Figures 8, 9, 12 to 14).

[0035] The grill portion 45 of the lower grill 40 is formed with a plurality of fastening portions 46 (see FIG. 4) through which fastening members are inserted, corresponding to the lower fixing portions 14c of the front panel 14 of the housing 10. The inner side frame portion 43 is also formed with a plurality of engagement recesses 43a (see FIG. 2) that are cut out forward from the rear end.

[0036] [1-1-5. Configuration of the first plug flange] Fig. 7 is a rear view of joint 34b of blower chamber grill 34 in embodiment 1. Fig. 8 is a cross-sectional view taken along line VIII-VIII in Fig. 7. Fig. 9 is a cross-sectional view taken along line IX-IX in Fig. 7. Fig. 10 is an enlarged view of a portion indicated by arrow X in Fig. 7. As shown in Figures 4 to 6, the lower grill 40 is formed with a wall-shaped connecting wall portion 47 that is formed to rise upward from the front end of the upper frame portion 44. The connecting wall portion 47 extends in the left-right direction at the front end of the upper frame portion 44, and extends to the outer end of the outer frame portion 42 and the outer end of the inner frame portion 43. The connecting wall portion 47 has an outer end surface 47a that rises upward from the outer ends of the upper frame portion 44, the outer frame portion 42, and the inner frame portion 43, a chamfered surface 47b that slopes upward from the upper end of the outer end surface 47a toward the back side of the lower grill 40, and a flat abutment surface 47c that extends from the upper end of the chamfered surface 47b toward the back side of the lower grill 40.

[0037] 4 and 5, a front insertion flange (first insertion flange) 48 that protrudes upward is formed on the rear surface (back side, inner surface) of connecting wall portion 47 at a position corresponding to upper frame portion 44. Front insertion flange 48 is located at the center in the left-right direction of upper frame portion 44. In this embodiment, when viewed from the front, it overlaps with a vertical line (not shown) that passes through the drive shafts of motors 31a, 32a of fans 31, 32.

[0038] 7, the front insertion flange 48 has a base 48a formed in the connecting wall portion 47 and extending along the connecting wall portion 47, a main body portion 48b supported by the base 48a, and tapered shapes 48c formed on both longitudinal ends of the main body portion 48b. The tapered shapes 48c are inclined inwardly in the left-right direction from the base 48a toward the tip of the insertion flange 48. The front insertion flange 48 is substantially trapezoidal when viewed from the front.

[0039] Here, the front insertion flange 48 is spaced apart from the upper frame portion 44. That is, the base portion 48a is spaced apart from the upper frame portion 44. In other words, a groove 48d (see FIGS. 8 and 10) surrounded by the connecting wall portion 47, the base portion 48a, and the upper frame portion 44 is formed on the back surface of the connecting wall portion 47.

[0040] As shown in Figs. 4 and 6, at a position corresponding to the outer frame portion 42, a side insertion flange (first insertion flange) 49 that protrudes upward is formed on the right face (back side, inner face) of the connecting wall portion 47. The side insertion flange 49 is located at the center in the front-to-rear direction of the upper end portion of the outer frame portion 42. The side insertion flange 49 extends in the front-to-rear direction. A tapered shape 49c is formed at both longitudinal ends of the side insertion flange 49. The tapered shape 49c inclines inward in the front-to-rear direction toward the tip of the insertion flange 49. The side insertion flange 49 is substantially trapezoidal when viewed from the left.

[0041] [1-1-6. Configuration of the second grill] The upper grill (second grill) 60 is formed substantially symmetrically with respect to the lower grill 40, except for the configuration related to the insertion flanges 48, 49. That is, as shown in Figs. 4 to 10, the upper grill 60 has an outer surface 60a, an upper frame portion 61, an outer side frame portion 62, an inner side frame portion 63, an engagement recess 63a (see Fig. 2), a lower frame portion 64, a grill portion 65, a horizontal plate 65a, a vertical plate 65b, a fastening portion 66, a connecting wall portion 67, an outer end surface 67a, a chamfered surface 67b, and an abutment surface 67c, which correspond to the outer surface 40a, the lower frame portion 41, the outer side frame portion 42, the inner side frame portion 43, the engagement recess 43a, the upper frame portion 44, a grill portion 45, a horizontal plate 45a, a vertical plate 45b, a fastening portion 46, a connecting wall portion 47, an outer end surface 47a, a chamfered surface 47b, and an abutment surface 47c of the lower grill 40.

[0042] More specifically, the upper grill 60 is formed with a wall-shaped joint wall portion 67 formed to hang down from the front end of the lower frame portion 64. The joint wall portion 67 extends in the left-right direction at the front end of the lower frame portion 64, and extends to the outer end of the outer frame portion 62 and the outer end of the inner frame portion 63. As shown in Figs. 5 and 6, the joint wall portion 67 has an outer end surface 67a that hangs down from the outer ends of the lower frame portion 64, the outer frame portion 62, and the inner frame portion 63, a chamfered surface 67b that slopes downward from the lower end of the outer end surface 67a toward the back side of the upper grill 60, and a flat abutment surface 67c that extends from the lower end of the chamfered surface 67b toward the back side of the upper grill 60. The contact surface 67c is formed parallel to the contact surface 47c of the lower grill 40.

[0043] [1-1-7. Configuration of the second plug-in flange] 4 and 5, insertion flanges 68, 69 protruding downward are formed on the rear surface (back side, inner surface) of the connecting wall portion 67 at a position corresponding to the lower frame portion 64. The insertion flanges 68, 69 are formed as a pair in the left-right direction of the lower frame portion 64.

[0044] 7 and 10, the front insertion flange (second insertion flange) 68 has a base 68a formed in the connecting wall 67 and extending along the connecting wall 67, a main body 68b supported by the base 68a, and a tapered shape 68c formed at the left end (one end in the longitudinal direction) of the main body 68b. The tapered shape 68c slopes inward in the longitudinal direction from the base 68a toward the tip of the insertion flange 68.

[0045] 7 and 9, the intermediate insertion flange (second insertion flange) 69 has a base 69a formed in the connecting wall portion 67 and extending along the connecting wall portion 67, a main body portion 69b supported by the base 69a, and tapered shapes 69c (see FIGS. 5 and 6) formed on both longitudinal ends of the main body portion 69b. The tapered shapes 69c are inclined inwardly in the longitudinal direction as they progress from the base 69a to the tip of the intermediate insertion flange 69.

[0046] Here, the insertion flanges 68, 69 are spaced apart from the lower frame portion 64. That is, the bases 68a, 69a are spaced apart from the lower frame portion 64. In other words, grooves 68d, 69d (see FIGS. 9 and 10) surrounded by the connecting wall portion 67, the bases 68a, 69a, and the lower frame portion 64 are formed on the back surface of the connecting wall portion 67.

[0047] As shown in Figures 4 and 6, at a position corresponding to the outer frame portion 62, a side insertion flange (second insertion flange) 70 that protrudes downward is formed on the right face (back side, inner face) of the connecting wall portion 67. The side insertion flange 70 is formed at the rear end of the outer frame portion 62. The side insertion flange 70 extends in the front-to-rear direction. A tapered shape 70c (see Figure 6) is formed at the front end (the other end in the longitudinal direction) of the side insertion flange 70. The tapered shape 69c inclines inward in the front-to-rear direction as it advances to the tip of the insertion flange 69.

[0048] [1-1-7. Configuration of the first plug flange and the second plug flange] Fig. 11 is a perspective view from the back showing the vicinity of seam 34b of outer frame parts 42, 62 of air blower chamber grill 34 in embodiment 1. Fig. 12 is a side view from the back showing the vicinity of seam 34b of outer frame parts 42, 62 of air blower chamber grill 34 in embodiment 1. Fig. 13 is a cross-sectional view taken along line XIII-XIII in Fig. 12. Fig. 14 is a cross-sectional view taken along line XIV-XIV in Fig. 12.

[0049] The airflow chamber grill 34 is formed by joining the joint wall portion 47 of the lower grill 40 and the joint wall portion 67 of the upper grill 60. Thus, in the airflow chamber grill 34, the outer surface 34a (see Figs. 8, 9, 12 to 14) is formed by the outer surface 40a of the lower grill 40 and the outer surface 60a of the upper grill 60. Also, in the airflow chamber grill 34, a seam 34b is formed as a boundary between the joint wall portion 47 of the lower grill 40 and the joint wall portion 67 of the upper grill 60.

[0050] At the seam 34b, the abutment surface 47c of the joint wall portion 47 of the lower grill 40 and the abutment surface 67c of the joint wall portion 67 of the upper grill 60 abut against each other. On the back side of the joint 34b, the insertion flanges 48, 49 of the lower grill 40 abut against the back side of the connecting wall portion 67 of the upper grill 60, and the insertion flanges 68, 69, 70 of the upper grill 60 are maintained in abutting contact with the back side of the connecting wall portion 47 of the lower grill 40.

[0051] In this embodiment, the insertion flanges 48, 49 of the lower grill 40 and the insertion flanges 68, 69, 70 of the upper grill 60 are formed to be separated from each other when the lower grill 40 and the upper grill 60 are joined together. That is, the insertion flanges 48, 49 of the lower grill 40 and the insertion flanges 68, 69, 70 of the upper grill 60 are formed to generate a gap S0 (see Figs. 10 and 12) between them when they are joined together. This makes it easier to prevent interference between the insertion flanges 48, 49 of the lower grill 40 and the insertion flanges 68, 69, 70 of the upper grill 60 when the lower grill 40 and the upper grill 60 are joined together.

[0052] [1-1-7. Configuration of the machine room grill] In this embodiment, the decorative grill (machine room grill) 35 has a lower grill 80 and an upper grill 100. The lower grill 80 and the upper grill 100 have a generally rectangular shape when viewed from the front. The lower grill 80 and the upper grill 100 are generally the same size. The vertical sizes of the lower grill 80 and the upper grill 100 correspond to the vertical sizes of the lower grill 40 and the upper grill 60 of the air blower room grill 34, respectively.

[0053] 2, the lower grill 80 has an outer frame portion 82 and an inner frame portion (not shown) that extend in the vertical direction. The outer frame portion 82 is formed with a fastening portion 82a that is fixed to the front side panel 13. The inner frame portion (not shown) is formed with a fitting portion (not shown) that engages with the engagement recess 43a of the blower chamber grill 34.

[0054] The upper grill 100 has an outer frame portion 102 and an inner frame portion (not shown) that extend in the vertical direction. The outer frame portion 102 is formed with a fastening portion 102a that is fixed to the front side panel 13. The inner frame portion (not shown) is formed with a fitting portion (not shown) that engages with the engagement recess 63a of the blower chamber grill 34.

[0055] [1-1-8. Installation configuration of ventilation room grille and decorative grille] Next, an example of a method for mounting the air blower chamber grill 34 and the decorative grill 35 to the housing 10 of the outdoor unit 1 will be described. In this embodiment, of the air blower grill 34 and the decorative grill 35, the air blower grill 34 is first attached to the housing 10.

[0056] The air blower chamber grill 34 is attached from the lower grill 40. The lower grill 40 is installed so that the connecting wall portion 47 faces upward and covers the opening 14a on the lower side of the front panel 14. A fastening member (not shown) is inserted from the front into the fastening portion 46 of the lower grill 40. This fastening member is fastened to the fixing portion 14c on the lower side of the front panel 14. The fastening member is, for example, a screw. In this way, the lower grill 40 is attached to the housing 10.

[0057] When the lower grill 40 is attached to the housing 10, the upper grill 60 of the blower chamber grill 34 is attached to the housing 10. That is, the upper grill 60 is installed so as to cover the upper opening 14b of the front panel 14 with the connecting wall portion 67 facing downward.

[0058] At this time, the upper grill 60 is positioned on the front surface of the front panel 14 so that the insertion flanges 48, 49 of the lower grill 40 are inserted between the insertion flanges 68, 69, 70. Then, the upper grill 60 is moved toward the lower grill 40 along the front surface of the front panel 14. As a result, the insertion flanges 48, 49 of the lower grill 40 are inserted between the insertion flanges 68, 69, 70 of the upper grill 60, and the insertion flanges 48, 49 of the lower grill 40 abut against the back side of the joint wall portion 67 of the upper grill 60. Also, the insertion flanges 68, 69, 70 of the upper grill 60 are inserted into positions where the insertion flanges 48, 49 of the lower grill 40 are not formed, and the insertion flanges 68, 69, 70 of the upper grill 60 abut against the back side of the joint wall portion 47 of the lower grill 40.

[0059] Therefore, the lower grill 40 and the upper grill 60 are joined together while preventing misalignment. At this time, the abutment surface 47c of the connecting wall portion 47 of the lower grill 40 abuts against the abutment surface 67c of the connecting wall portion 67 of the upper grill 60. In addition, the outer end surface 47a of the connecting wall portion 47 of the lower grill 40 and the outer end surface 67a of the connecting wall portion 67 of the upper grill 60 form a part of the integrally shaped outer surface 34a.

[0060] When the upper grill 60 is joined to the lower grill 40, a fastening member (not shown) is inserted from the front into the fastening portion 66 of the upper grill 60. This fastening member is fastened to the upper fixing portion 14d of the front panel 14. In this way, the upper grill 60 is also attached to the housing 10. That is, the air blower chamber grill 34 composed of the lower grill 40 and the upper grill 60 is attached to the housing 10.

[0061] When the blower chamber grill 34 is attached to the housing 10, the decorative grill 35 is attached to the housing 10. The decorative grill 35 is attached from the lower grill 80. The lower grill 80 is disposed at the lower right front of the housing 10. The lower grill 80 is moved on the front side panel 13 toward the inner side frame portion 43 of the lower grill 40 of the blower chamber grill 34, and the fitting portion (not shown) is fitted into the engagement recess 43a. This positions the lower grill 80. Then, the fastening member is inserted into the fastening portion 82a of the outer side frame portion 82 from the outside in the left-right direction, and the lower grill 80 is fastened to the fastening portion 13a of the front side panel 13. This allows the lower grill 80 of the decorative grill 35 to be attached to the housing 10.

[0062] When the lower grill 80 is attached to the housing 10, the upper grill 100 of the decorative grill 35 is attached to the housing 10. That is, the upper grill 100 is disposed at the upper right part of the front surface of the housing 10. The upper grill 100 is moved on the front side panel 13 toward the inner side frame part 63 of the upper grill 60 of the blower chamber grill 34, and the fitting part (not shown) is fitted into the engagement recess 63a. This positions the upper grill 100. Then, the upper grill 100 is fastened to the fastening part 13b of the front side panel 13 by inserting a fastening member through the fastening part 102a of the outer side frame part 102 from the outside in the left-right direction. This allows the upper grill 100 of the decorative grill 35 to be attached to the housing 10.

[0063] That is, the decorative grill 35 consisting of the lower grill 80 and the upper grill 100 is attached to the housing 10. In this manner, the air blower chamber grill 34 and the decorative grill 35 are attached to the housing 10 of the outdoor unit 1.

[0064] [1-2. Operation] The operation of the outdoor unit 1 of the heat pump apparatus HP configured as above will be described below.

[0065] In the outdoor unit 1 of the heat pump device HP, during operation, the compressor 21 is driven to circulate the refrigerant in the refrigerant circuit 20, and the fans 31 and 32 are driven to pass air through the air heat exchanger 25 for heat exchange. At this time, the air passing through the air heat exchanger 25 is blown to the inside and outside of the housing 10 through the air blower grill 34 and the openings 14a and 14b.

[0066] In this embodiment, the blower chamber grill 34 is installed on the front surface of the housing 10 by joining the lower grill 40 and the upper grill 60. The lower grill 40 and the upper grill 60 are fitted together by the insertion flanges 48, 49, 68, 69, 70, so that the joint wall portion 47 of the lower grill 40 and the joint wall portion 67 of the upper grill 60 can easily come into contact with each other without a gap being generated between the contact surface 47c and the contact surface 67c. In particular, the insertion flanges 48, 49, 68, 69, 70 extend in the front-rear direction and the left-right direction. Therefore, the insertion flanges 48, 49, 68, 69, 70 can easily come into contact with the lower grill 40 and the upper grill 60 from a plurality of different directions, making it easy to suppress misalignment in a plurality of directions. Therefore, gaps are less likely to occur at the joint 34b, and compared to cases where poor jointing such as gaps or steps occurs, the air chamber grill 34 is more likely to give the impression of a unified external shape, making it easier to improve the design of the outdoor unit 1.

[0067] In particular, when the grills have the same function, for example, as in this embodiment, the lower grill 40 and upper grill 60 that are capable of ventilation and that constitute the blower chamber grill 34, it is desirable from the viewpoint of improving design to have an integrated appearance. In this embodiment, the lower grill 40 and the upper grill 60 are joined together by the plug flanges 48, 49, 68, 69, 70, and it is expected that the impression of improved design will be given.

[0068] In addition, the insertion flanges 48, 49, 68, 69, 70 are provided with tapered shapes 48c, 49c, 68c, 69c, 70c. Therefore, when inserting, even if it contacts adjacent insertion flanges 48, 49, 68, 69, 70, etc., it is easily inserted while adjusting the positional relationship between the lower grille 40 and the upper grille 60, and the alignment of the insertion flanges 48, 49, 68, 69, 70 with each other is facilitated.

[0069] Furthermore, a gap S0 is formed between the insertion flanges 48, 49, 68, 69, 70. Thus, when manufacturing the lower grille 40 and the upper grille 60, even if shape variations occur, the gap S0 absorbs the variations, making it easier to join the lower grille 40 and the upper grille 60.

[0070] [1-3. Effects, etc.] As described above, in this embodiment, the outdoor unit 1 includes a refrigerant circuit 20 having a compressor 21 and an air heat exchanger 25, blowers 31, 32 that generate wind passing through the air heat exchanger 25, a housing 10 that houses the refrigerant circuit 20 and the blowers 31, 32, and a lower grille 40 and an upper grille 60 that cover the housing 10. The lower grille 40 and the upper grille 60 are joined to each other to form an outer surface 34a with an integrated grille appearance shape. The lower grille 40 has insertion flanges 48, 49 provided on the back side and protruding toward the upper grille 60 and abutting against the back side of the upper grille 60. The upper grille 60 has insertion flanges 68, 69, 70 provided on the back side and protruding toward the lower grille 40 and abutting against the back side of the lower grille 40. The insertion flanges 48, 49 and the insertion flanges 68, 69, 70 are alternately formed along the joint 34b between the lower grille 40 and the upper grille 60. According to this, it is easy to ensure the joining accuracy of the separate lower grille 40 and upper grille 60 without relying on the shape accuracy of the lower grille 40 and the upper grille 60. Therefore, it is possible to provide an outdoor unit 1 with excellent design in which the joint 34b of the grille is less noticeable.

[0071] As in this embodiment, the system includes a housing 10 provided with a machine chamber 17 in which a compressor 21 is arranged, and an air blower chamber 18 in which fans 31, 32 are arranged, a decorative grill 35 supported by the housing 10 in front of the machine chamber 17, and an air blower chamber grill 34 arranged in parallel to the decorative grill 35 and supported by the housing 10 in front of the air blower chamber 18, the air blower chamber grill 34 including a lower grill 40 and an upper grill 60, and the lower grill 40 and the upper grill 60 may be configured to allow ventilation. According to this, even if the lower grill 40 and the upper grill 60 are configured to allow ventilation and are prone to reducing rigidity, it is easier to ensure the design of the outer shape of the air chamber grill 34, and it is also easier to ensure the design of the outdoor unit 1.

[0072] Also, as in this embodiment, the air conditioner may be provided with a lower blower 31 arranged in the blower chamber 18, an upper blower 32 arranged above the lower blower 31, a lower grill 40 arranged in front of the lower blower 31, and an upper grill 60 arranged in front of the upper blower 32. According to this, even if two or more fans 31, 32 are arranged in the vertical direction and the height of the housing 10 becomes large, the air chamber grill 34 can be divided and assembled to ensure easy installation work on the housing 10 while maintaining the design of the outdoor unit 1.

[0073] Also, as in this embodiment, at least one of the ends of the insertion flanges 48, 49, 68, 69, 70 may be formed with a tapered shape 48c, 49c, 68c, 69c, 70c in the direction along the joint 34b. According to this, the insertion flanges 48, 49, 68, 69, and 70 can be guided by the tapered shapes 48c, 49c, 68c, 69c, and 70c, making it easier to insert the insertion flanges 48, 49, 68, 69, and 70.

[0074] Also, as in this embodiment, a predetermined gap S0 may be formed between the insertion flanges 48, 49 and the insertion flanges 68, 69, 70 in the direction along the seam 34b. According to this, the specified gap S0 allows the insertion flanges 48, 49 and the insertion flanges 68, 69, 70 to be inserted into each other while absorbing manufacturing variations between them, thereby preventing connection failures such as the shapes clashing with each other and causing a step on the outer surface 40a at the joint 34b between the lower grill 40 and the upper grill 60.

[0075] Also, as in this embodiment, a groove 48d may be formed on the back side of the lower grill 40 at the base end side of the front insertion flange 48, and grooves 68d, 69d may be formed on the back side of the upper grill 60 at the base end sides of the front insertion flange 68 and the intermediate insertion flange 69. This makes it possible to suppress the occurrence of sink marks and the like due to material accumulation during resin molding, and makes it easier to prevent poor appearances of the lower grill 40 and the upper grill 60.

[0076] As described above, in the present embodiment, the heat pump unit HP includes the outdoor unit 1 described above. This makes it possible to provide a heat pump device HP including an outdoor unit 1 with excellent design in which the grill joints 34b are less noticeable.

[0077] (Other embodiments) As described above, the above-mentioned first embodiment has been described as an example disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made. In addition, it is also possible to combine the components described in the above-mentioned first embodiment to create a new embodiment. Therefore, other embodiments will be exemplified below.

[0078] In Embodiment 1, the blower chamber grill 34 was exemplified as having a divided structure with two grills, namely the lower grill 40 and the upper grill 60, but it is not limited to this. For example, a third grill may be provided, and the blower chamber grill 34 may have a divided structure with three or more grills. Therefore, the blower chamber grill 34 may, for example, have a structure in which the upper grill, the middle grill, and the lower grill are joined together. That is, the blower chamber grill 34 may have a structure in which any integer number of two or more grills are joined together. In this case, the blower and the opening of the blower may also be provided in any of the above integer numbers.

[0079] In Embodiment 1, the blower chamber grill 34 was exemplified as having a configuration including the lower grill 40 and the upper grill 60 and being joined together in the vertical direction, but it is not limited to this. For example, as a configuration in which the grills are joined together in the horizontal direction, the configuration of the insertion flange in Embodiment 1 may be applied to the portion where the grills are joined together.

[0080] In Embodiment 1, a configuration in which two insertion flanges 48 and 49 are provided on the lower grill 40 and three insertion flanges 68, 69, and 70 are provided on the upper grill 60 was described. However, the number of the insertion flanges 48, 49, 68, 69, and 70 is not limited to the number in the above configuration. Therefore, for example, three insertion flanges may be provided on the lower grill 40 and two insertion flanges may be provided on the upper grill 60. Also, two or more insertion flanges may be provided on the lower grill 40 and two or more insertion flanges may be provided on the upper grill 60. That is, the insertion flanges of the lower grill 40 and the upper grill 60 only need to be formed alternately along the extending direction of the joint 34b, and the number of the respective insertion flanges of the lower grill 40 and the upper grill 60 may be any number of one or more.

[0081] In the first embodiment, the heat pump device HP is a heat pump water heater, and the outdoor unit 1 is provided with a water heat exchanger as a use-side heat exchanger. That is, the heat pump device HP is provided with an outdoor unit 1 and a hot water storage unit, and the outdoor unit 1 is provided with a water heat exchanger connected to the hot water storage unit via a water intake pipe 27. However, the configuration of the heat pump device and the outdoor unit is not limited to the configuration of the first embodiment. For example, the heat pump device may be an air conditioner. Also, the outdoor unit may be an outdoor unit of an air conditioner. Thus, the outdoor unit 1 of the present embodiment is provided with a water heat exchanger 23 as a use-side heat exchanger and an air heat exchanger 25 as a heat source-side heat exchanger, but the outdoor unit may be an outdoor unit without a use-side heat exchanger as long as a heat source-side heat exchanger is provided.

[0082] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, and the like can be made within the scope of the claims or their equivalents.

[0083] (Additional Note) The above description of the embodiments discloses the following techniques.

[0084] (Technology 1) An outdoor unit comprising: a refrigerant circuit having a compressor and a heat source-side heat exchanger; a blower that generates air that passes through the heat source-side heat exchanger; a housing that accommodates the refrigerant circuit and the blower; and a first grill and a second grill that cover the housing, wherein the first grill and the second grill are joined together to form an integrated grill appearance, the first grill has a first plug-in flange that is provided on the back side and protrudes toward the second grill and abuts against the back side of the second grill, and the second grill has a second plug-in flange that is provided on the back side and protrudes toward the first grill and abuts against the back side of the first grill, and the first plug-in flange and the second plug-in flange are formed alternately along the joint between the first grill and the second grill. According to this, it is possible to easily ensure the joining accuracy of the separate first grill and second grill without relying on the shape accuracy of the first grill and the second grill. Therefore, it is possible to provide an outdoor unit excellent in design in which the joint of the grill is less noticeable.

[0085] (TECHNOLOGY 2) The housing provided with a machine room in which the compressor is arranged and a blower room in which the blower is arranged, a machine room grill supported by the housing in front of the machine room, and arranged in parallel with the machine room grill, and a blower room grill supported by the housing in front of the blower room, the blower room grill includes the first grill and the second grill, and the first grill and the second grill are configured to be ventilable. The outdoor unit according to TECHNOLOGY 1. According to this, even if the first grill and the second grill are configured to be ventilable and easily have reduced rigidity, it is possible to easily ensure the designability of the outer surface shape of the blower room grill, and it is possible to easily ensure the designability of the outdoor unit.

[0086] (TECHNOLOGY 3) The outdoor unit according to TECHNOLOGY 2, including the first blower arranged in the blower room, the second blower arranged above the first blower, the first grill arranged in front of the first blower, and the second grill arranged in front of the second blower. According to this, even when two or more blowers are arranged in the vertical direction and the height of the housing becomes large, by dividing and assembling the blower room grill, it is possible to ensure easy workability of attaching to the housing while ensuring the designability of the outdoor unit.

[0087] (TECHNOLOGY 4) The outdoor unit according to any one of TECHNOLOGY 1 to 3, in which a taper shape is formed at at least one end of the insertion flange in the direction along the joint. According to this, the taper shape enables the insertion flange to be guided, so that the insertion flange can be easily inserted.

[0088] (Technical Technique 5) The outdoor unit according to any one of Technical Techniques 1 to 4, wherein a predetermined gap is formed between the first insertion flange and the second insertion flange in the direction along the joint. With this, the specified gap allows the first and second plug-in flanges to be inserted into each other while absorbing manufacturing variations between them, thereby preventing connection problems such as the shapes clashing and causing a step on the outer surface at the joint between the first grille and the second grille.

[0089] (Technology 6) An outdoor unit according to any one of Technologies 1 to 5, in which a groove is formed on the back side of the first grille at the base end side of the first plug-in flange, and a groove is formed on the back side of the second grille at the base end side of the second plug-in flange. This makes it possible to suppress the occurrence of sink marks and the like due to material buildup during resin molding, and makes it easier to prevent poor appearances of the first grille and the second grille.

[0090] (Technical 7) A heat pump device including an outdoor unit according to any one of Technical 1 to 6. This makes it possible to provide a heat pump device equipped with an outdoor unit that has an excellent design in which the seams of the grill are less noticeable. [Industrial Applicability]

[0091] The present disclosure can provide an outdoor unit with excellent design in which the seams of the grill are less noticeable. Thus, the present disclosure is useful for various devices having an outdoor unit, and is particularly useful for heat pump water heaters, heat pump type hot water heaters, and heat pump type air conditioners. [Explanation of symbols]

[0092] 1 Outdoor unit 10. Chassis 11 Bottom Panel 12 Rear side panel 13 Front side panel 13a Fastening part 13b Fastening section 14 Front Panel 14a aperture 14b opening 14c Fixed part 14d Fixed part 15 Tabletop 16 Partition 17 Machine room 18 Ventilation chamber 20 Refrigerant circuit 21 Compressor 22 Four-way valve 23 Water heat exchanger (user side heat exchanger) 24 Expansion Device 25 Air heat exchanger (heat source side heat exchanger) 26 Refrigerant piping 27 Water supply piping 30 Blower strut 31 Blower (first blower) 31a Motor 31b Fan blade 32 Blower (second blower) 32a motor 32b Fan blade 33 Electrical box 34 Blow Room Grill 34a Exterior 34b Seam 35 Cosmetic grill (machine room grill) 40 Lower Grill (First Grill) 40a Exterior 41 Lower frame part 42 Outer side frame 43 Inner side frame 43a Engagement recess 44 Upper frame part 45 Grill section 45a horizontal board 45b vertical board 46 Fastening Part 47 Joint wall part 47a Outer end surface 47b side 47c Contact surface 48 Insertion Guard (First Insertion Guard) 48a base 48b Main body 48c tapered shape 48d groove 49 Insert flange (first insert flange) 49c Taper shape 60 Upper grill (second grill) 60a Outer surface 61 Upper frame part 62 Outer side frame part 63 Inner side frame part 63a Engagement recess 64 Lower frame part 65 Grill part 65a Horizontal plate 65b Vertical plate 66 Fastening part 67 Partition wall part 67a Outer end face 67b Surface 67c Contact surface 68 Insert flange (second insert flange) 68a Base part 68b Body part 68c Taper shape 68d Groove 69 Insert flange (second insert flange) 69a Base part 69b Body part 69c Taper shape 69d Groove 70 Insert flange (second insert flange) 70c Taper shape 80 Lower grill 82 Outer side frame part 82a Fastening part 100 Upper grill 102 Outer side frame part 102a Fastening part HP Heat pump device L Approximately PS1 Pressure sensor PS2 Pressure sensor RS1 Refrigerant sensor S0 Gap TS1 Temperature sensor TS2 Temperature sensor

Claims

1. a refrigerant circuit having a compressor and a heat source side heat exchanger; A blower that generates air passing through the heat source side heat exchanger; a housing in which the refrigerant circuit and the blower are housed; a first grill and a second grill covering the housing; Equipped with The first grille and the second grille are joined together to form an integrated grille appearance; the first grill has a first insertion flange provided on a rear side thereof, protruding toward the second grill and abutting against a rear side of the second grill; the second grill has a second insertion flange provided on a rear side thereof, protruding toward the first grill and abutting against the rear side of the first grill; The first and second plug-in flanges are formed alternately along a seam between the first grille and the second grille. outdoor unit.

2. the housing includes a machine chamber in which the compressor is disposed and an air blower chamber in which the blower is disposed; a machine room grill supported by the housing at a front portion of the machine room; an air blower chamber grill disposed in parallel with the machine chamber grill and supported by the housing in front of the air blower chamber; Equipped with The air blower grill includes the first grill and the second grill, The first grill and the second grill are configured to allow ventilation. The outdoor unit according to claim 1 .

3. A first blower disposed in the blowing chamber; A second fan disposed above the first fan; the first grill disposed in front of the first blower; the second grill disposed in front of the second blower; Equipped The outdoor unit according to claim 2 .

4. At least one end of the insertion flange is tapered in a direction along the joint. The outdoor unit according to any one of claims 1 to 3.

5. A predetermined gap is formed between the first and second insertion flanges in a direction along the joint. The outdoor unit according to any one of claims 1 to 3.

6. A groove is formed on the rear side of the first grille toward the base end side of the first plug-in flange, A groove is formed on the rear side of the second grille at the base end side of the second plug-in flange. The outdoor unit according to any one of claims 1 to 3.

7. The outdoor unit according to any one of claims 1 to 3 is included. Heat pump equipment.

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