JP3009046U - Air conditioner outdoor unit - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the size of the outdoor unit of an air conditioner and to save installation space. [Structure] In an outdoor unit of an air conditioner, a connection valve for connecting a refrigerant pipe to be connected to the indoor unit is arranged at an upper portion, and the outdoor unit is configured in a substantially square shape when viewed from the front. . [Effect] There is no overhang of the connection valve on the side of the outdoor unit, and the outdoor unit can be configured in a substantially square shape. Since the connection valve does not travel on the side, installation space can be saved. The space required for work is eliminated, and the side of the outdoor unit can be installed close to the building.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an outdoor unit of an air conditioner including an indoor unit and an outdoor unit connected to the indoor unit by a refrigerant pipe, and particularly to connecting a refrigerant pipe connected to the indoor unit. The present invention relates to the one in which the connection valve is arranged at the upper part and the inclined portion is formed along the back surface of the top cover to achieve the downsizing of the outdoor unit and the space saving of the installation place.

[0002]

[Prior art]

 There is a strong demand for downsizing outdoor units of air conditioners, and products that have been devised to be downsized have been developed to date. However, in the conventional outdoor unit of the air conditioner, a connection valve for connecting the refrigerant pipe is usually provided on the lower side surface portion, and it was necessary to project the pipe from the lower side portion when connecting the pipes.

Usually, an outdoor unit of an air conditioner includes a compressor for compressing a cooling medium and a refrigerating cycle including a heat exchanger and the like, and the refrigerating cycle includes an indoor unit side and a refrigerant pipe. The blower is installed to achieve air cooling for the heat exchanger, and a decorative cover is attached to the front side of the blower. The refrigerant pipe is connected to the lower side surface side of the outdoor unit. Conventional examples include JP-A-5-256475 and JP-A-5-133571.

Further, there is JP-A-5-133596 as an example in which the arrangement of electrical components is devised to reduce the size of the outdoor unit.

[0005]

[Problems to be solved by the device]

 In the conventional outdoor unit, the side is provided with a connection terminal for connecting the overhanging refrigerant pipe. Therefore, this side is added to the overhanging part (50 to 100 mm) of the connecting terminal from the building etc. Since the work space to be connected must be installed separately, it was necessary to separate them by 200 mm or more, which occupied a large installation space. Also, in the sales process, the protruding part of the connection valve deteriorated the design of the main body, and the packaging size increased accordingly.

Furthermore, since the position of the connection valve is provided on the lower side surface, the workability is poor because the refrigerant pipe is seated and the body is curled up when the refrigerant pipe is attached to or detached from the connection valve.

The present invention relates to an outdoor unit of an air conditioner, and provides an inclined portion on the back surface of a top cover by devising a connection valve for connecting a refrigerant pipe connected to the indoor unit. The aim is to save space in the installation of outdoor units and facilitate the work of connecting refrigerant pipes.

[0008]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention relates to an outdoor unit of an air conditioner connected to an indoor unit by a refrigerant pipe, in which a base forming a lower surface of the outdoor unit and upper and lower and front directions of the indoor unit are provided. It is opened and is shaped like a U-shape so as to substantially cover the other three surfaces, and is attached to the base, and about the horizontal axis in the space surrounded by the heat exchanger. The rotatably arranged blower and the compressor mounted horizontally on the base in a direction orthogonal to the horizontal rotation axis of the blower in the space surrounded by the heat exchanger, and the heat exchanger. To connect the electrical component box containing the electrical components, which is arranged on one side of the upper open surface, facing the upper open surface, and the refrigerant pipe, which is arranged on the other side of the heat exchanger facing the upper open surface, on the other side. Refrigerant piping connection valve, electrical box and connection valve A top cover for protecting the equipment and a decorative cover for covering each device from the front, and an inclined portion is formed along the back surface of the upper cover, and an insertion portion for the refrigerant pipe is formed in the inclined portion. Is characterized by.

[0009]

[Action]

 According to the present invention, since the outdoor unit is configured by the above means and the connecting valve does not travel on the side surface, and the space for the refrigerant piping work is not required on the side surface of the outdoor unit, the installation space is saved. It has a small size, and even if the outdoor unit is installed close to a building, it will not affect the work of connecting the refrigerant pipes.

[0010]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is the outdoor unit of the air conditioner. The outdoor unit 1 is connected to the indoor unit with a refrigerant pipe to form an air conditioner. As shown in FIGS. 1 to 5, the outdoor unit 1 includes devices such as a compressor 2, a heat exchanger 3, a blower 8 and the like, and sucks air from the back surface and both side surfaces of the heat exchanger to exchange heat. This is a structure in which the air that has undergone heat exchange in the vessel is blown out from the front.

That is, the base 4 has the heat exchanger 3 which is open to the upper and lower sides and the front side and has a heat exchange surface formed in a U shape on both side surfaces and a back surface. The compressor 2 and the blower 8 are arranged in a space 3z formed by the heat exchanger 3, and a valve fixing plate 10 having a connection valve 11 is arranged on the upper right side of the heat exchanger 3 and the valve fixing plate 10 On the left side in the horizontal direction, an electric component box 9 containing electrical components (not shown in detail) is arranged and attached, and both sides of the cosmetic cover 5 are covered so as to cover both sides of the heat exchanger 3 attached to the base 4. Position, the lower ends of the decorative covers 5 are attached to both side and front side portions of the base 4, and the upper ends of the side faces of the decorative cover 5 are attached to the right end of the valve fixing plate 10 with screws. The top cover 6 is attached to the decorative cover 5 attached as described above so as to cover the top surface 3a portion of the heat exchanger 3, the electrical component box 9, and the connection valve 11. The back surface of the top cover is provided with an inclined portion over the entire width, and a space can be formed between the wall of the building and the like when the pipe is arranged on the back surface of the outdoor unit 1. In the embodiment, the refrigerant pipe 12 has a heat insulating material wound on the outside, and the outer diameter dimensions are 25 mm and 22 mm. By piping this as shown in FIGS. 3 and 13, when the gap between the rear surface of the outdoor unit and the wall 21 is set to 50 mm, the gap between the refrigerant and the piping becomes about 40 mm, which is from the upper side of the outdoor unit. Does not significantly affect the intake of air. Therefore, it is possible to prevent the performance of the air conditioner from deteriorating.

The outdoor unit 1 includes equipment such as a heat exchanger 3, a compressor 2, a blower 8, an electrical component box 9, and a valve fixing plate 10 having a connection valve 11 installed in a plane area of a base 4, The box-shaped body has a substantially rectangular parallelepiped shape that does not have a partial protrusion that affects the installation space of the outdoor unit 1. As an embodiment of the present invention, an embodiment in which the electric component box 9 and the connection valve 11 are arranged above the upper end surface 3a of the heat exchanger 3 is shown, but the present invention is not limited to this arrangement. Instead, it is also possible to adopt a configuration in which the heat exchanger is formed high in the height direction, the electric component box 9 and the connection valve 11 are arranged in the space of the heat exchanger 3, and attached to the upper end thereof. (Not shown).

As shown in FIGS. 4 and 7, the heat exchanger 3 is formed by bending a flat plate heat exchanger into a U-shape to form a space 3z inside, and includes a refrigerant pipe 3e and side plates. The side plate 3b is provided with screw holes 3c and 3d at its lower and upper ends. Although such a shape of the heat exchanger itself is not new, it is for the purpose of the present invention that the heat exchange areas on the left and right side surfaces formed in a U-shape can be made sufficiently wide. In particular, the right side surface of the heat exchanger can be widely used as a heat exchange surface because of the arrangement configuration of each device of the present invention.

Reference numeral 4 denotes a base on which the compressor 2 and the heat exchanger 3 are directly placed, and although not shown in detail, it has legs for installation and a flange portion formed by raising the periphery. A screw hole 3c at the lower end of the side plate 3b of the heat exchanger and a lower end of the decorative cover 5 are screwed to the flange portion. Further, a supporting member 20 (see FIGS. 5 and 13; details not shown) for rotatably supporting the blower 8 is screwed to the base 4.

The decorative cover 5 is arranged on the front surface and both side surfaces of the outdoor unit 1 and covers the devices built in the outdoor unit 1. As shown in FIGS. 8 to 10, the decorative cover 5 has an air blowing grill 5a having a large number of holes in the center of the front surface, and air sucking holes 5a having a large number of holes on both side portions. Grills 5b and 5g are provided at positions facing both side surfaces of the heat exchanger 3. A screw hole 5c for connecting with a screw hole 4c of the base 4 by a screw is formed at the lower end portion, screw holes 5d and 5e and a hole 5f are formed at the upper end portion, and a handle 16 is provided from the upper end of the left side surface. It is formed to project. The right side does not have a handle so as not to interfere with the valve connection work. The handle 16 is formed so as to be located approximately in the middle of the depth of the outdoor unit 1. Reference numeral 19 is a partition plate having a mouth ring for partitioning the suction side and the blowing side of the blower, which can be attached to the heat exchanger 3 or can be attached to the decorative cover 5.

Reference numeral 6 denotes a top cover, and the base 4 and the decorative cover 5 constitute a box body of the outdoor unit 1. A handle 17 is formed on the right side surface of the top cover 6, and is used together with the left side handle 16 formed on the makeup cover 5 when the outdoor unit is transported. Further, the rear surface of the upper surface cover 6 has an inclined surface 6a which is inclined about 17 degrees from the vertical surface over the entire width in the rear surface direction, and a cutout portion 6e through which the refrigerant pipe 12 is inserted in a part of the inclined surface 6a. Is formed. As a result, the refrigerant pipe 12 can be laid horizontally along the inclined surface 6a.

A space 7 having a height dimension h is provided between the upper surface cover 6 and the upper surface 3 a of the heat exchanger 3, as shown in FIG. In this space 7, an electric component box 9 and a connection valve 11 attached to a valve fixing plate 10 are housed. The electrical component box 9 and the connecting valve 11 are arranged in the space 7 side by side in the horizontal direction. The height dimension h of the space 7 is set to be slightly larger than the height dimension of the electrical component box 9 or the connection valve 11.

Further, the size of the electric component box 9 in the width direction is 3/4 of the width dimension in the front direction when the heat exchanger 3 is installed, and the dimension in the depth direction is the heat exchanger. It is almost the same size as the depth dimension of 3. Reference numeral 10 denotes a valve fixing plate made of a metal plate, which is approximately 1/4 of the width dimension of the heat exchanger 3 in a state where the overlapping portion with the electric component box 9 is removed and is formed by drawing. (Not shown in detail).

Reference numeral 11 is a connection valve, and a refrigerant pipe 12 connected to the indoor unit is connected to the connection valves 11 a and 11 b so that the indoor unit and the outdoor unit 1 constitute a refrigeration cycle. The connection valve 11 penetrates the valve fixing plate 10, and the refrigerant pipe 14 or the refrigerant pipe 15 is connected to the lower end portion thereof. The connecting valve 11 is attached so as to be orthogonal to the inclined portion of the convex portion formed by squeezing the valve fixing plate 10 so that the side surface side of the heat exchanger 3 becomes lower as described above. Therefore, when the tool 13 is applied to the cap nuts 11c of the connection valves 11a and 11b, the tool 13 does not interfere with the side end of the electrical component box 9. Of course, at this time, the mounting height dimension of the connecting valves 11a and 11b with respect to the inclined portion is also set. In other words, the connecting valves 11a and 11b are too close to each other so that the use of the tool is not interfered with, and the flare nut of the refrigerant pipe 12 is connected to the conduit portion of the connecting valve when the refrigerant pipe 12 is connected to the tool. Use to set the position so that it can be rotated.

Reference numeral 14 is a suction pipe, one end of which is connected to the preceding connecting valve 11a and the other end of which is connected to a pipe on the compressor 2 side, and 15 is a discharge pipe. These pipes 14 and 15 are connected to the refrigerant pipe connecting portion 11g of the connecting valves 11a and 11b in a direction orthogonal to the inclined portion of the valve fixing plate 10. Reference numerals 14a and 15a denote bent portions provided midway from the rising pipe portions of the pipes 14 and 15 to the inclined connection portions, and the role of the bent portions 14a and 15a is to absorb local stress. Further, this bent portion allows the tubes 14 and 15 to be attached in a direction orthogonal to the inclined portion of the valve fixing plate 10.

Next, how the outdoor unit is miniaturized in the present invention will be described in more detail. In the embodiment realized by the present invention, the dimensions when viewed from the front of the outdoor unit are small and have a width of 595 mm, a height of 597 mm, and a depth of about 260 mm. The key points for making the outdoor unit smaller are the placement positions and placement intervals of the equipment installed in the outdoor unit.

In the present invention, specifically, the respective devices are arranged in the outdoor unit in the arrangement relationship shown in FIGS. 13 to 15. That is, as described above, each device is arranged inside the space portion 3z of the heat exchanger 3 formed in a U shape shown by hatching in cross section in order to effectively use the space.

First, the decorative cover 5 that determines the outer dimensions of the outdoor unit is arranged near the outer periphery of the heat exchanger 3. The width dimension at that time is determined by the diameter of the blower that obtains the air volume necessary for heat exchange, as described later. At that time, the blower 8 is arranged at a substantially central portion in the width direction of the outdoor unit 1. In this embodiment, the blower 8 is arranged substantially at the center in the width direction of the outdoor unit 1, but in consideration of its existence in the piping part arrangement band described later, it can be further downsized if it is arranged to the left in the width direction. Becomes Next, the compressor arrangement zone 2z is secured in the space 3z of the heat exchanger 3 and below the blower 8. Furthermore, the electrical component box arrangement zone 9z and the connection valve arrangement zone 11z are arranged above the space 3z of the heat exchanger 3. Then, finally, the pipe arrangement zone 14z is arranged inside the space 3z of the heat exchanger 3 and on the side of the blower 8. With this configuration, the outdoor unit can be configured within the vertically projected area of the space 3z of the heat exchanger 3. FIG. 15 shows the arrangement relationship between the compressor 2 and the rising pipes 14 and 15 in detail. As an embodiment of the present invention, an embodiment in which the electrical equipment box arrangement zone 9z and the connection valve arrangement zone 11z are arranged above the upper end surface 3a of the heat exchanger 3 is shown. However, the heat exchanger is not limited to this, and the arrangement zone 9z and the connection valve arrangement zone 11z are arranged in the space 3z of the heat exchanger 3 by forming the heat exchanger high in the height direction, and at the upper end 3a thereof. It is also possible to adopt a mounting structure (not shown).

As a concrete example of the arrangement relationship of these devices, in the case of a blower having a diameter of 370 mm, the arrangement and positional relationship shown in FIGS. 14 and 15 are preferable for downsizing the outdoor unit. That is, when the diameter of the blower 8 is 370 mm, the compressor placement zone 2z needs to be about 145 mm and the electrical equipment box placement zone 9z needs to be about 70 mm in the height direction of the outdoor unit. Further, the fin height of the heat exchanger 3 is required to be about 35 mm and the rising pipe arrangement zone 14z is required to be about 25 mm in the width direction of the outdoor unit. By arranging each device in this way and securing a gap necessary to prevent excessive resistance to the air flow generated by the blower, the height and width dimensions of the outdoor unit 1 become about 600 mm, and the blower 8 It is preferable that the center of rotation is located at a substantially central position in the width direction and slightly higher than the central part in the height direction.

In a mutual relationship, when the diameter of the blower 8 is Dmm, the height dimension of the outdoor unit 1 is Hmm, the width dimension is Wmm, and the height of the rotation axis of the blower 8 is H1mm, 1. It is desirable to determine the arrangement band of each device so as to satisfy the relationship of 5D ≦ W ≦ 1.7D and 0.6H ≦ H1 ≦ 0.8H.

FIG. 16 is a comparison diagram showing that the outdoor unit of the present invention requires a smaller installation area than the conventional outdoor unit. (A) is a conventional model and (b) is an improvement. FIG. 3 is a plan view showing the installed state of the outdoor unit of the present invention, model (c). Each of FIG. 14, which represent the installation space requirement for installing the outdoor unit at necessary intervals with the area of the front, rear, left and right, the conventional model of (a) is about 1m ² (9308cm ^2), The improved model of (b) is about 0.5 m ² (4577 cm ² ), and the invention of (c) is about 0. 4m2 (3995cm ^2), and the footprint of the present invention represents a or requires only a how small.

In particular, in the present invention, the gap size on the side where the refrigerant pipe is discharged is also 10 cm, which is half of 20 cm of the improved model, as compared with the improved model. In addition, the rear clearance between the outdoor unit and the building wall is 5 cm, which is the same as the improved model. The size of the left-right clearance is larger than the size of the rear clearance because the air flowing into the clearance of the left-right clearance also flows into the back side.

As described above, since the outdoor unit according to the embodiment of the present invention does not have the connecting valve that projects to the side surface, the dimension in the width direction is reduced accordingly. That is, the size of the embodiment of the outdoor unit 1 of the present invention is 595 mm, and the size of 695 mm, which is 100 mm of the gap size l1, is added to the size of 700 mm to 800 mm, which is the size between the balcony and the window of a general house. Since it is small, it can prevent the windows of the building from being blocked, and since the depth of a typical veranda is 800 mm, it can be installed in the depth direction of the veranda.

As described above, in the embodiment, since the connecting valve does not travel on the side surface, the space for installation can be saved, and the external appearance can be made into a rectangular parallelepiped, so that the design to be integrated with the building is easy. .

[0030]

[Effect of device]

 As described above, the present invention has a configuration in which the connection valve is provided on the upper surface side of the outdoor unit, so that the outdoor unit is configured in a substantially square shape without the connection valve overhanging on the side surface. Since the connecting valve is not traveling on the side as in the past, the space required for installation can be reduced, the space required for the work can be reduced, and the side of the outdoor unit can be installed close to the building. I can.

[Brief description of drawings]

FIG. 1 is a sectional front view of a main part of an outdoor unit.

FIG. 2 is a left side view of the cross section of the main part of the outdoor unit.

FIG. 3 is a right side view of the refrigerant pipe connection state of the outdoor unit.

FIG. 4 is a top view of a main part showing in detail a connecting portion of a refrigerant pipe.

FIG. 5 is an exploded perspective view showing the arrangement of each device of the outdoor unit.

FIG. 6 is an enlarged cross-sectional view of the main part of the upper right part of the outdoor unit.

FIG. 7 is a perspective view showing a simplified heat exchanger.

FIG. 8 is a perspective view of the makeup cover as viewed from the upper left.

FIG. 9 is a detailed front view of the makeup cover.

FIG. 10 is a detailed left and right side view of the makeup cover.

FIG. 11 is a perspective view and a side view of the top cover seen from the upper right.

FIG. 12 is a rear perspective view of the outdoor unit of the present invention.

FIG. 13 is a right side sectional view of the outdoor unit.

FIG. 14 is an arrangement band configuration diagram of each device when the outdoor unit is viewed from the front.

FIG. 15: Detailed layout of rising refrigerant piping

[Figure 16] Comparison diagram of installation spaces

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outdoor unit main body, 2 ... Compressor, 3 ... Heat exchanger, 3a ... Upper end surface, 3z ... Space part, 4 ... Base, 5 ... Decorative cover, 6
... Top cover, 8 ... Blower, 9 ... Electrical component box, 10 ... Valve fixing plate, 11 ... Connection valve, 12 ... Refrigerant piping, 13 ...
Tool, 14 ... Suction pipe, 14a ... Bent portion, 15 ... Discharge pipe,
Reference numeral 15a ... Bent portion, 16 ... Transport handle, 17 ... Transport handle, 19 ... Partition plate with mouth ring, 20 ... Support frame

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Susumu Kashiwazaki 4-6, Surugadai Kanda, Chiyoda-ku, Tokyo Inside Hitachi, Ltd.

Claims (4)

[Scope of utility model registration request] 1. In an outdoor unit of an air conditioner connected to an indoor unit by a refrigerant pipe, a base that constitutes a lower surface of the outdoor unit, and an opening in the vertical direction and the front direction of the indoor unit. A heat exchanger that is formed in a U shape so as to substantially cover the surface and is attached to the base, and is rotatably arranged around a horizontal axis in a space surrounded by the heat exchanger. A blower, a compressor that is also installed in the space surrounded by the heat exchanger in a direction orthogonal to the horizontal rotation axis of the blower, and horizontally attached to the base, and an upper opening of the heat exchanger. An electrical component box containing electrical components arranged on one side opposite to the surface and for connecting the refrigerant pipe arranged on the other side facing the upper open surface of the heat exchanger. Refrigerant piping connection valve and the above electrical box And a top cover for protecting the connection valve, and a decorative cover for covering each device from the front, forming an inclined portion along the back surface of the upper cover, and inserting the refrigerant pipe in the inclined portion. An outdoor unit for an air conditioner, which is characterized by forming a section. 2. An electric component box containing an electric component and a refrigerant pipe connecting valve are arranged in a space surrounded by a heat exchanger, and are mounted on an upper end surface of the heat exchanger. The outdoor unit of the air conditioner according to claim 1. 3. The outdoor unit for an air conditioner according to claim 1, wherein the electrical component box containing the electrical components and the refrigerant pipe connection valve are arranged above the upper end face of the heat exchanger. 4. An outdoor unit for an air conditioner, wherein an inclined portion formed along the back surface of the top cover forms an inclined surface of 10 degrees or more with respect to a vertical plane.