CN1342872A - Outdoor unit of air conditioner - Google Patents

Abstract

An air conditioner having an outdoor unit and an indoor unit. The outdoor unit 1 is equipped with an inspection valve 11, which is connected with a connection pipe 12 protruding from the indoor unit to form a refrigeration cycle. The inspection valve has a refrigerant pipe connection portion 11e, and the connection portion has a connection threaded part; the outdoor unit is also equipped with a valve fixing piece. A space is provided below the fixing position of the service valve, the space is immediately below the connecting threaded part.

Description

Outdoor unit of air conditioner

The present invention relates to an outdoor unit of an air conditioner which is connected to an indoor unit by a connecting pipe, and more particularly to an improved outdoor unit which enables the assembly space of the outdoor unit to be enlarged according to the setting of the inspection valve. Saving, simplifying the connection work of the connecting pipe connected with the indoor unit is connected with the inspection valve.

A structural example of an outdoor unit of a conventional air conditioner is shown in FIG. 27, which is a perspective view of the outdoor unit after it is installed. The arrangement of the inspection valve for connecting the connecting pipes of the outdoor unit will be described below with reference to FIG. 27.

Reference numeral 22 denotes an outdoor unit of the air conditioner. The outdoor unit 22 has a refrigerating circuit including a compressor, an outdoor heat exchanger, etc. mounted on the rear panel. The refrigeration circuit is connected with the indoor unit through the connecting pipe 23 . Reference numeral 24 denotes an axial flow fan 24 whose front portion is connected to a front cover 25 . Reference numeral 26 denotes a fitting portion to which the front cover 25 is attached. Reference numeral 27 denotes an air outlet through which the air sucked in from the back of the axial flow fan 24 is discharged. The connecting pipe 23 is connected to the side of the outdoor unit 22, and the position of installation makes the side of the outdoor unit free of anything (seeing figure 27). An example of such an air conditioner outdoor unit is described in JP-A-05-256475. Furthermore, JP-A-05-133571 describes another example of an outdoor unit of an air conditioner, in which the air outlet is mounted on the front of the outdoor unit and the air inlet is mounted on the side, which is the difference from JP-A-05-256475 place. In addition, the connection end connecting the electrical part and the connecting pipe is arranged side by side with the air inlet on the side to surround the electrical part, and the cover of the connection end is integrated with the handle, thereby improving the external shape and shortening the time required for the connection cover. time spent.

Above-mentioned traditional outdoor unit has following defect:

When the outdoor unit of the air conditioner is placed on the ground, since an inspection valve is installed on its side, the work of assembling and disassembling the refrigerant connecting pipe on the inspection valve must be carried out under harsh working conditions in a semi-kneeling and bending posture.

Therefore, the first object of the present invention is to provide an air conditioner which can ensure a good working condition for installing the refrigerant connecting pipe on the inspection valve.

A second object of the present invention is to provide an air conditioner which can ensure a good working condition for installing a refrigerant connecting pipe on a service valve and can increase the strength of a valve fixing member.

In order to achieve the above object, the present invention provides following air conditioner:

(1) An air conditioner with an outdoor unit and an indoor unit, wherein the outdoor unit is equipped with:

a service valve connected to a connection pipe protruding from the indoor unit to form a refrigeration cycle, the service valve having a refrigerant pipe connection portion including a connection thread portion, and

a valve mount,

Wherein a space is provided below the fixing position of the service valve, and the space is immediately below the connecting threaded part.

(2) An air conditioner with an outdoor unit and an indoor unit, wherein the outdoor unit is equipped with:

a service valve connected to a connecting pipe extending from said indoor unit to form a refrigeration cycle, and

A valve fixing member having a mounting portion on which said service valve is mounted, said valve fixing member being formed by deep drawing.

Fig. 1 is the partially cut-away front view of the outdoor unit of the present invention; It shows the main components of the outdoor unit;

Fig. 2 is the left side view of outdoor unit partial section, and it has represented the main parts of outdoor unit;

Fig. 3 is the right side view of outdoor unit;

Fig. 4 is the partially cut-away top view of the outdoor unit of Fig. 2, and it shows the main components of the outdoor unit when the connecting pipe is connected;

Figure 5 is an exploded perspective view of the outdoor unit shown in Figures 1 to 4;

Fig. 6 is a partially sectional view enlarged in size, and it represents the connection parts of the connecting pipes located at the upper right part of the outdoor unit;

Fig. 7 is a simplified perspective view of the outdoor heat exchanger in Fig. 1 viewed from the right;

Fig. 8 is a perspective view of the outdoor unit casing viewed from the right downward;

Figure 9 is a perspective view of the front cover looking down from the left;

Fig. 10 is a perspective view of the casing upper cover viewed from the left;

Figure 11 is a perspective view of the electrical box looking down from the right;

Figure 12 is a perspective view of the electrical box looking down from the left;

Figure 13 is a perspective view of the valve plate connected to the service valve;

14 is a perspective view of a support for supporting an axial flow fan viewed from the right downward;

Figure 15 is a front view showing the end of the connecting pipe and the service valve connected to the end of the connecting pipe;

Figure 16 is a front view of the maintenance valve;

Figure 17 is a side view of the service valve;

Figure 18 is a perspective view of the upper cover looking down from the left at the rear;

Fig. 19 is a simplified cross-sectional view for illustrating that the upper cover is in a connected state;

Figure 20 is a perspective view of the outdoor unit connected to the connecting duct viewed from the left at the rear;

Figure 21 is a perspective view of the outdoor unit in an assembled state;

Figure 22 is a perspective view of the outdoor unit in an assembled state;

Figure 23 is a perspective view of the outdoor unit in an assembled state;

FIG. 24A is a schematic diagram illustrating an installation space of a prior art outdoor unit;

FIG. 24B is a schematic diagram illustrating the installation space of the outdoor unit of the present invention;

Fig. 25 is a partial cross-sectional view similar to Fig. 6, which illustrates, on an enlarged scale, the connecting parts of the connecting pipes located at the upper right end of the outdoor unit;

Fig. 26 is a partial cross-sectional view similar to Fig. 6, which illustrates, on an enlarged scale, the connecting parts of the connecting pipes located at the upper right end of the outdoor unit;

Fig. 27 is a perspective view of a conventional outdoor unit in an assembled state.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 26 . The structure of the outdoor unit will be described with reference to FIGS. 1 to 17 .

Reference numeral 1 denotes an outdoor unit of the air conditioner. An air conditioner (not shown) is constructed by connecting the outdoor unit to the indoor unit by a connecting pipe. As shown in Figures 1 to 6, the assembled machine of the outdoor unit 1 includes a compressor 2, an outdoor heat exchanger 3 and an axial flow fan 8 to suck the air coming from behind, and the outdoor heat exchanger is mounted on the back and two sides, the air after heat exchange with the outdoor heat exchanger is discharged from the front.

Specifically, in the outdoor unit 1, the outdoor heat exchanger 3 is arranged along both sides and the back of the bottom 4 and fixed. The valve plate 10 connected with the maintenance valve 11 is contained in the upper right end of the outdoor heat exchanger 3 . An electrical box 9 is arranged and fixed on the left side on the same plane of the valve plate 10 . The setting of the front cover 5 should make their two sides surround the two sides of the outdoor heat exchanger 3 fixed on the bottom 4, and when the upper edge of the front cover 5 is fixed on the right end of the valve plate 10 with screws , so that the lower edge of the front cover 5 is connected to both sides and the top of the bottom 4 .

This ensures the strength of the casing of the outdoor unit 1 . The purpose of setting the upper cover 6 is to surround the front cover 5 , the upper end 3 a of the outdoor heat exchanger 3 , the electrical box 9 and the valve plate 10 . In this way, the bottom 4, the front cover 5, the outdoor heat exchanger 3, the upper cover 6, the electrical box 9 and the valve plate 10, etc. are all organically combined, thereby ensuring the strength of the shell of the outdoor unit 1, and making the shell roughly Formed in a rectangular solid shape, there are no local protrusions affecting the installation space.

As shown in Figs. 4, 5 and 7, the shape of the outdoor heat exchanger 3, which is provided with refrigerant tubes 3e and side plates 3b, can be obtained by changing the plate heat exchanger into a U-shape. Screw holes 3c and 3d are respectively opened at the lower end and the upper end of the side plate 3b.

Reference numeral 4 represents the bottom on which the compressor 2, the outdoor heat exchanger 3 and the axial fan 8 are mounted. As shown in FIG. 8, the bottom 4 has a foot 4d for installation and a raised edge 4a formed along its periphery. There are screw holes 4b and screw holes 4c on the flange 4a, the screw holes 3c on the lower end of the side plate 3b are connected with the screw holes 4b with screws, and the screw holes 4c are used to connect the lower edge of the front cover 5.

The bottom 4 has two slopes 4g at two corners corresponding to the back of the outdoor unit 1 . The inclined portion 4g constitutes a part of the rising flange 4a, so the torsional strength of the bottom portion 4 is increased, and it is difficult to resonate with the vibration of the compressor and the axial flow fan. Also partly because the bottom is less prone to resonance, reducing vibration and noise also reduces the noise to the point where it is hardly perceptible even in a very quiet environment, such as late at night.

A front cover 5 is installed on the front and both sides of the outdoor unit 1 for protecting the equipment installed in the outdoor unit 1 . As shown in Figure 9, the front middle part of the front cover 5 has an air outlet grille 5a including a large number of holes, and the two sides of the front cover have an air inlet grille 5b facing the outdoor heat exchanger 3 and including several holes. Have some screw holes 5c, these screw holes are combined with the screw holes 4c of the bottom 4 by screws.

The upper end of the front cover 5 also has some screw holes 5d, 5e and some openings 5f, extending from the upper end of the left side of the front cover 5 to form a handle 16 . The handle 16 is generally located in the middle of the depth of the outdoor unit 1 , and the handle is used for moving or transferring the outdoor unit 1 . Reference numeral 19 denotes a baffle having an inlet and outlet, which divides the axial flow fan 19 into an intake side and an exhaust side. The baffle plate 19 can be connected with the outdoor heat exchanger 3 as shown in FIG. 5 , and can also be connected with the front cover 5 as shown in FIG. 9 . The depth of the bottom 4 can be made thinner, and the degree of thinness corresponds to the increment of the twisting strength of the bottom 4, so resources can also be saved.

Reference numeral 6 denotes an upper cover that cooperates with the bottom 4 and the front cover 5 to form the casing of the outdoor unit 1 . As shown in FIG. 10 , the right side of the upper cover 6 is provided with a handle 17 for moving or transporting the outdoor unit 1 , and a cutout 6 b for receiving the handle 16 on the front cover 5 is formed on the left side thereof. The front of the upper cover 6 has a notch 6c for preventing the upper end of the outlet grid 5a of the front cover 5 from being covered, and the inner surface of the upper cover also has a plurality of protrusions 6d. In addition, a cutout 6e is formed on the back of the upper cover 6 through which the connecting pipe 12 extends, and a plurality of protrusions 6f are formed on the left side of the upper cover 6 to engage with the opening 5f of the front cover 5 .

The back of the loam cake 6 that has the slit 6e is an inclined surface 6a along its entire width, so the connecting pipe 12 can extend horizontally along the inclined surface 6a as shown in Figure 20, so that the installed outdoor unit makes its left side Close to a building like the balcony shown in Figure 23. In addition, since the connecting pipe 12 is installed along the inclined surface as described above, it is avoided that the connecting pipe 12 protrudes upward beyond the top of the outdoor unit 1, so that two outdoor units can be assembled into a stacked state.

As shown in FIG. 6 , there is a space 7 with a height H between the upper end 3 a of the outdoor heat exchanger 3 and the upper cover 6 . An electrical box 9 and a service valve 11 connected to a valve plate 10 are housed in the space 7 . The height H of the space 7 is set to be slightly larger than the height of the electrical box 9 or the inspection valve 11.

Inside the upper cover 6, the electrical box 9 and the inspection valve 11 are arranged side by side along the horizontal direction. Since the electrical box 9 and the inspection valve 11 are arranged side by side in the horizontal direction, considering the situation that rainwater or mist enters the upper cover 6 from the cutout 6e, the partition member 6g and the upper cover 6 are integrated. The partition member 6g cooperates with the protruding portion 6d to act as a reinforcing member, so as to overcome the load applied from above the upper cover 6 .

The circuit for controlling the compressor motor, the axial flow fan and other electrical equipment of the outdoor unit 1 and the indoor unit 2 is carried by the air box 9 . As shown in Figure 1, the right end of the electrical box 9 has a screw hole 9a for combining with the valve plate 10, and its left end has a screw hole 9c, and the screw hole on the upper left side of the front cover 5 is screwed. 5e combined with said screw hole 9c, the electrical box also has a protruding edge 9b, as shown in Figure 12, this edge has a vertical planar portion with a screw hole 9c.

The vertical planar portion of the protruding edge 9b protruding from the left side of the electrical box 9 is spaced apart from the left side of the electrical box 9, so that a space for the handle 16 on the front cover is defined between them .

Install the electrical box 9 on the upper end 3a of the outdoor heat exchanger 3 between the left side of the valve plate 10 and the upper end of the left side of the front cover 5, combine the electrical box with the upper end of the outdoor heat exchanger with screws, to connect them together. The electrical box 9 is made of a metal plate so as to absorb the harmful noise generated by the control circuit and prevent the harmful noise emitted from the outdoor unit from being transmitted to the outside. If the electrical box 9 is made of plastic material, the inner or outer surface of the electrical box is covered with a thin layer of metal.

In addition, as shown in Figure 1, the lateral length of the electrical box 9 is set to be about 3/4 of the lateral dimension of the outdoor heat exchanger 3 when it is in an assembled state, and its dimension in the depth direction is basically equal to that of the outdoor heat exchanger 3 The dimension in the depth direction, which is shown in Figure 4.

Reference numeral 10 denotes a valve plate made of a metal plate. Except for the part overlapping the electrical box 9, the width of the valve plate 10 is about 1/4 of the width of the outdoor heat exchanger 3, and the valve plate also has a protruding part 10b made by drawing.

The valve plate 10 is installed on the upper end 3a of the outdoor heat exchanger 3, and one end of the valve plate is fixed to the screw hole 3d on the upper end of the side plate 3b of the outdoor heat exchanger 3 with screws, and will be separated from the fixed part. The other end of the valve plate with a certain distance is fixed to the upper end of the support 20 of the axial flow fan 8 with screws, and the support is located in the middle of the outdoor heat exchanger in the transverse direction. As shown in FIG. 13, the valve plate 10 has a protrusion 10b and raised portions 10c and 10g. The protruding portion 10b protrudes upward from the surface of the flat portion 10a, and has a flat and horizontal upper surface, and both the raised portions 10c and 10g have inclined portions in their upper surfaces so that a part is higher than the protruding portion 10b, and a part is lower than the protruding portion. 10b.

Openings 10d, 10g and screw holes 10e, 10h for respectively connecting the valve plates 11 are formed in the inclined portions of the raised portions 10c and 10f of the valve plate 10. The valve plate 10 has a bent piece on one peripheral end thereof. One of the curved parts has a screw hole 10i that is combined with the screw hole 3d on the upper end of the outdoor heat exchanger side plate 3d, and the other curved parts each have a screw hole 10i that is connected to the right side of the front cover 5 by a screw. The screw hole 107' combined with the screw hole 5d on the upper end of the upper end. The valve plate 10 also has a protrusion, a screw hole 10n and several screw holes 10m. This protruding piece has a screw hole 10k that is combined with the screw hole 20b on the support member 20 upper end 20a of the axial fan 8 by a screw, and the screw hole 10n is combined with the screw hole 9a of the electrical box 9 by a screw, and the screw hole 10n is combined with the screw hole 9a of the electrical box 9. Combine the screw hole 10m with the hole on the handle 17 to fix the upper cover 6 .

As shown in Figure 14, the supporting member 20 has a hook-shaped upper end 20a, which is hung on the upper end of the outdoor heat exchanger 3, and they are engaged and fixed with each other. The outdoor heat exchanger is located at the back of the outdoor unit 1, and the supporting The lower end 20d of the member is fixed to the bottom 4. The lower end portion 20d can be fixed to the bottom 4 by screwing together the screw hole 20e on the lower end portion 20d and the screw hole 4f on the protrusion 4e. The protrusion 4e protrudes at the middle of the bottom 4 in the lateral direction.

As mentioned above, by connecting the various components together, the back and both sides of the outdoor heat exchanger 3 can be firmly connected together by means of the valve plate 10 and the supporting member 20, thereby preventing deformation of the outdoor heat exchanger, and The assembly position of the outdoor heat exchanger can be reliably selected. In addition, the valve plate 10, the electrical box 9, the support member 20 and the outdoor heat exchanger 3 cooperate with each other to form the reinforcement of the outdoor unit shell, and the formed reinforcement, the front cover 5 and the bottom 4 cooperate with each other to form a Housing for a practical outdoor unit 1 . This ensures sufficient strength.

Specifically, by combining the bottom 4 with the lower end of the support 20, combining the upper end 20a of the support 20 with the left end of the valve plate 10, and connecting the right end of the valve plate 10 with the outdoor unit near the right side of the outdoor unit. When the upper ends of the side plates 3b of the heat exchanger 3 are combined and the lower ends of the side plates 3b are combined with the bottom 4, the outdoor unit casing as viewed from the front becomes a quadrangle. In addition, the upper end 20a of the support member 20 is engaged with the upper part of the outdoor heat exchanger 3 at the back of the outdoor unit, thereby being supported on the heat exchanger, so that the upper and lower end surfaces of the outdoor heat exchanger 3 viewed from the top are all in the shape of triangle. In this way, a triangular column structure can be obtained by combining the front quadrilateral shape and the triangular shape of the upper and lower end faces, so that the strength can be increased.

In addition, in another embodiment, the height of the front cover 5 combined with the left end of the bottom 4 and the left end of the electrical box 9 should make the bottom 4 and the electrical box 9 firmly fix the front cover 5 between them. In this way, the screws and other connecting parts fixing the left side of the outdoor heat exchanger 3 can be omitted, and at the same time, the strength can be improved by combining with the triangular column structure.

Reference numeral 11 denotes a service valve. The connection pipe 12 to be connected with the indoor unit (not shown) is connected to the service valves 11a, 11b so as to cooperate with the indoor unit and the outdoor unit 1 to form a refrigeration cycle.

As shown in FIGS. 15 to 17, each service valve 11 has a refrigerant pipe connection portion 11g, a connecting pipe connection portion 11e, a body nut 11c and another body nut 11f. The refrigerant pipe connecting portion 11g extends through the opening 10d or 10g of the valve plate 10 , and the lower end of the connecting portion is connected to the refrigerant pipe 14 or 15 by brazing. The connection pipe connection part 11e is connected to the flare nut 12a of the high or low pressure side connection pipe 12 through which the outdoor unit is connected to the indoor unit. When the refrigerant introduction valve housed inside is opened and closed, the body nut 22c is removed. When the connecting pipe is fixed and other assembly work is completed, if the air is purged by operating the inner valve, the body nut 11f is removed.

However, since the service valve 11b connected to the high-pressure side connecting pipe 12 does not need the valve and body nut 11f for purifying air, the service valves generally used all omit the above-mentioned purification valve and body nut 11f. Fix the high-pressure side connection pipe 12 with a small outer diameter and easy bending to the valve 11b on the raised part 10f away from the cutout 6e, and fix the low-pressure side connection pipe with a larger outer diameter than the high-pressure side connection pipe 12 and which is not easy to handle 12 is fixed to the service valve 11a on the bulge 1c near the cutout 6e of the upper cover 6.

When the connecting pipe 12 is fixed, at first the outer diameter is larger, and the low-pressure side connecting pipe 12 that is difficult to handle is fixed on the inspection valve 11a, and then the high-pressure side connecting pipe is fixed on the valve. This allows the flare nut 12 a of the connecting pipe 12 to be turned with a tool without being affected, and the easy-to-bend high-pressure main-side connecting pipe 12 can be arranged along the low-pressure-side connecting pipe 12 . Therefore, the high and low pressure side connecting pipes 12, 12 can also be pulled out from the outdoor unit after they are tightly coupled together.

The service valve 11 is vertically connected to the slope of the bulge, each bulge is made by the control valve plate 10 as mentioned above, the closer to the side of the outdoor heat exchanger, the lower the bulge is. Accordingly, when the tool 13 is used to operate the body nuts of the service valves 11 a , 11 b , the tool 13 is not affected by the side edge 9 a of the electrical box 9 . Of course, at this time, the installation heights of the maintenance valves 11a and 11b relative to the inclined parts need to be adjusted. Specifically, the inspection valves 11a, 11b should be located at a position that separates them, and the distance between them is sufficient to use tools. At the same time, even when the connecting pipe 12 is connected to the connecting part 11e of the inspection valve, the flared opening of the connecting pipe 12 The nut 12a is also rotatable with the tool.

In addition, in order to make the flared nut 12a of the connecting pipe 12 rotate with the tool, as shown in Figure 4, the position and size of the bulge 10c of the valve plate 10, 10g are designed to prevent the flared nut 12a from stopping the rotation of the tool .

Reference numeral 14 denotes an intake pipe (low pressure) connected at one end to the service valve 11a and at the other end to the pipe of the compressor 2 . Reference numeral 15 denotes an exhaust pipe (high pressure). As shown in FIGS. 1 and 6 , the intake and exhaust pipes 14 , 15 are connected to the refrigerant pipe connection portions 11 g of the service valves 11 a , 11 b in a direction perpendicular to the inclined portion of the valve plate 10 .

Reference numerals 14a, 15a designate bends in the middle of the pipes 14, 15. The bends 14a, 15a are provided for the following reasons. Whenever the connection pipe 12 is connected with the inspection valve 11a, 11b to make the flare nut 12a rotate with the tool, and when the body nut 11c is rotated with the tool 13 after the connection pipe 12 is connected, the inspection valve 11a, 11b is behind. When the tool 13 is rotated, it is also rotated. Even if the service valve is turned in this way, the welds of the pipes 14, 15 must be protected from stress. That is, the purpose of the bends 14a, 15a is to provide flexibility to the pipes 14, 15 and to ease rotation by deflecting the pipes.

The bent parts 14 a, 15 a are arranged in the space defined by the valve plate 10 and the outdoor heat exchanger 3 , but not close to the running track of the axial flow fan 8 . By effectively utilizing the space, the pipes 14, 15 can be vertically connected to the inclined portion of the valve plate 10, and these pipes can be provided with bent portions 14a, 15a.

The handle of the outdoor unit 1 is described below with reference to accompanying drawings 2 and 3 . The handles 16, 17 are arranged on the upper part of the outdoor unit 1 in substantially the same plane (ie substantially at the same height), and substantially in the middle of the depth (or substantially coincident with the center of gravity of the outdoor unit).

The handle 16 is on the front cover 5 and the handle 17 is on the upper cover 6 . So when the upper cover 16 is pulled down, the handle 17 is disengaged simultaneously. Therefore, when the connecting pipe 12 is connected to the inspection valve 11, the handle 17 is disengaged with the removal of the upper cover 6, so that the connection operation will never be hindered by the handle 17 protruding to the inspection valve 11 during assembly. , thereby improving performance. In addition, the handle 17 is designed to be installed in the outdoor unit by utilizing the space for accommodating the service valve 11 above the outdoor heat exchanger 3, and the handle can be placed approximately in the middle of the depth of the outdoor unit as described above. position, this is because the outdoor heat exchanger 3 with the handle will never be set in this way.

Therefore, since the handle can be arranged at a position consistent with the center of gravity of the outdoor unit 1, it is different from setting the handle away from the center of gravity of the outdoor unit so that it is located in a space where the outdoor heat exchanger is not provided (such as the curved portion of the outdoor heat exchanger and Compared with the situation in the space defined between the two corners on the back of the housing), it is easier to carry the outdoor unit, and the weight on the handle will not be uneven. The upper cover surrounding the service valve 11 can be divided into several parts. If only one of the several parts is covered on the inspection valve, it is guaranteed that this part is made detachable, so that it is not necessary to remove the entire upper cover and can be easily operated. In addition, although the pipe installation operation is performed when it is raining, it is also possible to prevent rainwater from falling on the circuit, thereby eliminating the hidden danger of failure.

In addition, except for the part surrounding the inspection valve 11, the height of the upper cover can be lowered, thereby making the overall height smaller. In addition, in the case of separating the upper cover part surrounding the inspection valve 11, when the surrounding part of the inspection valve is removed and the connecting pipeline is connected, since the height of the upper cover is low, other parts are not easily affected, and the This improves work performance. Reference numeral 18 denotes a protective net for protecting the periphery of the outdoor heat exchanger from external influences. Protective net 18 also can save.

Next, an operation method for installing the outdoor unit 1 having the above-mentioned structure will be described.

As shown in FIG. 6, the outdoor unit 1 is installed so that the gap (e) between the outdoor unit 1 and the building wall 21 is not large. Therefore, even if the tool is operated from the side of the wall 21 in order to remove the body nut 11c and operate the added valve to introduce refrigerant after the connection of the connecting pipes is completed, the space for operating the tool cannot be guaranteed. So it's hard to work.

In this embodiment, the inclination angle and height of the inclined portion of the valve plate 10 should be designed to prevent the tool 13 from being affected by the end 9b of the electrical box 9, and the handle of the tool 13 can be kept above the electrical box 9. Complete operational tasks, thereby improving work performance.

The connecting pipe 12 is also tightly screwed onto the service valves 11a, 11b with the tool 13. At this time, the inspection valves 11a, 11b should be designed to protrude from the valve plate 10 at different heights, so as to facilitate the above-mentioned operations. Promptly allow the raised portion 10c adjacent to the slit 6e behind the loam cake 6 to be lower than the raised portion 10f away from the cutout 6e, so as to prevent the connecting pipe 12 of the service valve 11 being fixed on the raised portion 10f away from the cutout 6e from running into or In particular close to another bulge 10c adjacent to the cutout 6e or to another service valve 11 fixed to the bulge 10c. The height of the service valve 11 can be changed without changing the height of the raised portion.

In addition, the longitudinal direction of the inclined portion of the raised portion 10c adjacent to the cutout 6e is made substantially parallel to the rear surface of the outdoor unit 1, and the inclined portion of the raised portion 10f away from the cutout 6e is made The longitudinal direction of is at an angle with respect to the rear of the outdoor unit 1, as shown in FIG. 4 . With this arrangement, in order to prevent the connection pipe 12 connected to the service valve 11b remote from the cutout 6e from hitting or coming very close to the raised portion or the service valve adjacent to the cutout 6e, the angle of inclination and the height of the inclined portion are set at the same distance as the free movement of the tool. The surface condition is relatively small, and the free movement of the tool is obtained by adjusting the inclination angle and height of the inclination part. Therefore, the smaller inclined portion contributes to further improvement in workability.

After completing the above-mentioned connection operations, cover the loam cake 6 to surround the electrical box 9 and the inspection valve 11.

As described above, although the outdoor unit has a substantially rectangular solid shape, the side facing the front cover may be substantially square. This prevents the cross-sectional midpoint of the air outlet grid of the axial flow fan from being far away from the front cross-sectional midpoint of the front cover 5, so that the external shape can be improved.

In addition, the stress applied to the valve plate 10 when using tool B is distributed to the various components, partly because the valve plate 10 is fixed to the upper end of the side plate of the outdoor heat exchanger 3 with screws or other fixings, and the axial flow The upper end 20a of the support member 20 of blower fan 8, the upper end of electrical box 9 and front cover 5, also have part reason to be that the left end of electrical box 9 is screwed to the upper end of front cover 5, so just can prevent valve plate 10 from deforming. In addition, by controlling the formation of raised portions on the valve plate 10, deformation of the valve plate can be further prevented.

The installation of the outdoor unit having the above structure will be described below with reference to FIGS. 18-24. Fig. 18 is a perspective view of the upper cover 6 viewed downward from the left at the back; Fig. 19 is a simplified cross-sectional view used to illustrate the upper cover 6 in a connected state; Figs. 21 to 23 illustrate that each embodiment is in an assembled state 24 is a schematic diagram illustrating an embodiment and a prior art outdoor unit installation space.

As shown in Figure 18, the lower end corner of the cutout 6e that allows the connecting pipe 12 to extend through is processed into a circle, so as shown in Figure 19, by inserting the right end of the upper cover 6 in the front cover 5 and its rear end around the embedded Under the situation that this loam cake is connected with front lid by rotating part, can prevent loam cake 6 from contacting with connecting pipe 12.

According to the above embodiment, when the service valve 11 is provided on the upper part of the outdoor unit 1, as shown in FIGS. 21 to 23, the outdoor unit 1 can be installed in a place close to the building. That is, the schematic diagram of Fig. 21 shows: the right side of the installed outdoor unit 1 can be placed close to the building, therefore, the gap _l between the outdoor unit and the balcony as the building structure can be far smaller than the gap between the traditional outdoor unit and the balcony _14. The side of the traditional outdoor unit is equipped with an inspection flasher, as shown in Figure 24. Compared with the conventional gap l ₄ (l ₄ =200mm), the gap l ₁ of this embodiment is half of the gap l ₄ , and its value is 100mm.

The gap _l2 between the outdoor unit 1 and the building wall is 50 mm, which is the same as that of the prior art. The gap _l1 is made larger than the gap l2 because the air flowing _into the gap _l1 is sucked through the air inlet grille 5b at the side and from the rear.

Since the side of the outdoor unit 1 of this embodiment is provided with a service valve, the reduction in the lateral length corresponds to the size of the service valve, thereby preventing building windows from being affected as shown in FIG. 21 . Specifically, the width of the outdoor unit 1 of this embodiment is 595mm, and the gap _l1 that length is 100mm adds the width of 595mm, and it is equal to 695mm (about 700mm), and this value is more than the distance from the balcony of general room floor to the window (700 to 800mm) should be small, so that the balcony of the building can be avoided.

Fig. 22 is a schematic diagram showing that the outdoor unit 1 is installed leaving a space _l1 between its right side and the wall of the building. In this case, subtract 695mm (about 700mm) from the total balcony depth of 800mm to obtain a space of 100mm between the left side of the outdoor unit 1 and the balcony, which meets the needs of air circulation. In fact, there are certain balconies whose depth is greater than 800mm, yet the space _l4 of the traditional outdoor unit with the inspection valve on the side is still 100mm larger than the space _l1 of this embodiment. This requires the balcony to have a depth of 900mm, so traditional outdoor units cannot be installed in ordinary balconies in this way.

According to the installation situation shown in FIG. 22, even if the distance from the door to the balcony or other objects is very small (for example, 300mm), the installation of the outdoor unit is not affected by the door. Shown in Fig. 22 is the situation that is installed on the left side in the balcony, in any case, even can be installed in the same way on the right side in the balcony. Fig. 23 is a schematic diagram showing the case where the outdoor unit 1 is installed on the left side in the balcony, leaving a space _l2 between the back of the outdoor unit and the building wall.

In this case, when connecting the connecting pipe 12 connected to the indoor unit to the inspection valve 11, if the connecting pipe 12 is bent in advance, after the connecting pipe 12 is fixed to the inspection valve 11, the connecting pipe 12 can be The inclined surface 6a of the attached upper cover 6 is provided. Therefore, the connecting pipe 12 can be prevented from protruding upward beyond the top of the outdoor unit 1, and thus no special attention needs to be paid to improving the coordination between the connecting pipe 12 and the appearance of the building. In addition, since the connecting duct 12 is provided along the inclined surface 6a, the connecting duct 12 is prevented from protruding upward beyond the top of the outdoor unit 1 as described above, so that two outdoor units 1 can be stackably installed.

In this embodiment, as mentioned above, since the service valve does not protrude from the side, the installation space can be saved, forming a rectangular solid shape. It is thus easy to coordinate its appearance with the building.

In the above-mentioned embodiment, the service valve 11 is installed obliquely, but as shown in Figure 25 or 26 (partially enlarged cross-sectional view, showing the upper right part of the outdoor unit), the way of installing the service valve should be such that the refrigerant introduction valve as the service valve operating part (not shown) and the body nut can be rotated in a horizontal or vertical plane.

Specifically, as shown in Fig. 25, when the body nuts of the operating parts 11a' and 11b' as the inspection valves are rotated in the horizontal plane, the operation of rotating the body nuts by the tool is affected by the electric box 9, so that the tool operated The swivel angle is reduced to about 90°, but performs better than prior art outdoor units with service valves on the side. In addition, since the top is open, when the connection pipe 12 is connected, the workability similar to the embodiment shown in FIG. 6 is excellent. If do not adopt the long-term widely used and very general linear universal tool shown in Fig. 1 and Fig. 6, if adopt the L-shaped tool widely used in recent years, then the angle of rotation of operation changes just like Fig. 6 embodiment Into 150 degrees to 180 degrees. Therefore, the working performance is quite good as in the Fig. 6 embodiment.

As shown in Figure 26, when the maintenance valve operating parts 11a" and 11b" rotate in the vertical plane, the electrical box 9 does not rotate during the process of rotating the operating parts with a tool, so the turning angle of the tool reaches about 120 degrees. Compared with the prior art that the service valve is installed, the working performance has been greatly improved. The workability of connecting the connecting pipe 12 is as good as that of the embodiment shown in FIGS. 6 and 25 .

When controlling the valve plates 10' and 10" shown in Figures 25 and 26, the ridges made are substantially the same as the ridges 10c and 10f of the valve plate 10 shown in Figure 13. Use the same method described above in relation to Figure 4 to determine The dimension of the bulge is such that when the nut 12a of the connecting pipe 12 is operated to turn with a tool, the bulge must not be affected by this operation.

As described above, many effects can be obtained according to the above-described embodiments. Some typical effects are described below. Since the inspection valve 11 is installed on the top, the difference compared with the prior art in which the inspection valve is installed on the side is that different operations can be completed on the top of the outdoor unit: including the operation of fixing the connecting pipe 12, connecting and dismounting the inspection valves 11a, 11b , 11a', 11b', 11a'' and 11b'' body nuts, and the operation of opening or closing the refrigerant introduction valve incorporated in each service valve by rotating the valve after removing the body nut 11c. Therefore, there is no need to operate in a restrained posture pad, whereby safe and efficient operation can be performed.

Since the inspection valve 11 is installed obliquely, the rotation track of the tool 13 is not affected by the electrical box 9 . Thus, the use of widely used general-purpose tools enables operation even on walls, while avoiding severe effects on the electrical box 9 and the walls. Therefore, the work performance is good, and there is no need to prepare any special tools.

In the embodiment in which the valve plate 10, the outdoor heat exchanger 3, the axial flow fan support plate 20 and the electrical box 9 are combined to form reinforcements for ensuring the strength of the casing of the outdoor unit 1, it is not necessary to prepare any separate reinforcement for the casing. Therefore, the number of dimensions that can be reduced corresponds to the size of a single reinforcement member, and the number of assembly parts can be reduced, and the assembly time can be shortened.

The valve plate 10 has bulges at some positions, and each bulge has a slope that becomes smaller toward the side of the outdoor unit 1, and the inspection valve 11 is substantially vertically fixed on the slope. This is beneficial to ensure the fixing of the connecting pipe 12 , to ensure that the inspection valve 11 is connected to the valve plate 10 , and to reduce the installation height of the inspection valve 11 . Therefore, the height of the space between the upper end of the outdoor heat exchanger 3 and the upper cover 6 can be smaller.

The valve plate 10 made by drawing the metal plate can enhance the strength of the valve plate itself, and the valve plate is fixed to the upper end of the side of the external heat exchanger 3 and is suspended on the support 20 behind the outdoor heat exchanger 3, Thereby increasing the strength between the joint parts. In addition, the service valve 11 is connected to the raised portion of the valve plate 10, so the external force applied to the valve plate 10 when connecting the connection pipe 12 to the service valve 11 is distributed to the outdoor heat exchanger 3 and the support member 20, thus The strength against external force can be obtained without reinforcing parts.

As can be clearly seen from the above according to the present invention, since the service valve is mounted on the top of the outdoor unit, various operations can be performed on the top of the outdoor unit ensuring a large space, including : The operation of the fixed connection pipeline and the operation of starting the service valve immediately after the operation of the fixed connection pipeline. Therefore, it is not necessary to operate in a constrained posture, thus enabling safe and effective operation.

In addition, since the inspection valve is provided on the top of the outdoor unit, there is no need to leave a distance equivalent to the length of the inspection protrusion and a space required for operation on the side, so that the side of the outdoor unit can be placed close to the building ground. Outdoor unit to be installed. In addition, unlike the prior art, the service valve does not protrude from the side, thereby saving installation space.

The valve plate, outdoor heat exchanger, axial flow fan and support and electrical box are all used as reinforcements to ensure the strength of the outdoor unit casing, so there is no need to prepare any separate reinforcement for the casing. This results in reduced size, fewer assembly parts, and shorter assembly times.

Claims (2)

1 one kinds of air-conditioners with an outdoor unit and an indoor unit is characterized in that described outdoor unit is equiped with:

A service valve, it links to each other with a connecting pipe of stretching out from described indoor unit, thereby forms a kind of refrigeration cycle, and described service valve has a refrigerant tubing connecting portion, and this connecting portion comprises a connecting thread portion, and

A valve fixture,

Wherein be provided with a space under the fixed position of described service valve, described space is below described connecting thread portion is right after.

2. air-conditioner with an outdoor unit and an indoor unit is characterized in that described outdoor unit is equiped with:

A service valve, it links to each other with a connecting pipe of stretching out from described indoor unit, thereby forms a kind of refrigeration cycle, and

A valve fixture, it has the installation portion that a described service valve of confession is mounted thereon, and described valve fixture is made with the pull and stretch method.

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