JP4081681B2 - Indoor unit and air conditioner - Google Patents

Description

  The present invention relates to an indoor unit main body and an air conditioner using the same, and more particularly to an improvement related to a pipe connection part that connects a pipe of a heat exchanger of the indoor unit main body to a pipe outside the indoor unit main body.

With respect to refrigerant pipe connection of conventional air conditioners, there is a ceiling-suspended air conditioner that connects refrigerant pipes in the main body, and a drain receiver is provided detachably below the refrigerant pipe connection port (for example, patents) Reference 1).
Japanese Utility Model Publication No. 56-172613 (first page, second page, FIG. 2, FIG. 3)

  However, in the above-described conventional air conditioner, the work for connecting the main body pipe and the external pipe is a work in a narrow place where there is no space and is difficult to do, but no consideration is given to this. In particular, in the case of a ceiling-embedded air conditioner or the like, there is a problem that the work is difficult because the space is limited and the attached dew drops on the ceiling or the like, and the ceiling material and the like are easily damaged. .

An object of the present invention is to solve such a problem and facilitate pipe connection of a refrigerant pipe connection portion of an indoor unit body.
It is another object of the present invention to prevent fouling caused by dripping of dew due to insufficient heat insulation work.
Moreover, it aims at making the heat insulation of a refrigerant | coolant piping connection part unnecessary.

The indoor unit main body according to the present invention has two refrigerant pipe connection portions, which are formed by the first outer plate and the second outer plate, and are arranged in the notch portion of the outer box. the refrigerant pipe connection part, the projection portion of the two refrigerant pipe connection part which is projected on the surface of the first outer plate have a spacing in the lateral direction and the vertical direction, and, closer to the second outer plate The refrigerant pipe connection portion is inclined so as to be lower than the farther refrigerant pipe connection portion, and extends above the refrigerant pipe connection portion from the upper portion of the first outer plate and the upper portion of the second outer plate. An integral pipe fixture attachment portion is provided, the bottom surface of the pipe fixture attachment portion is inclined corresponding to the inclined arrangement of the two refrigerant pipe connection portions, and the first outer plate side is above the opposite side. It is tilted to become .

The indoor unit main body according to the present invention has two refrigerant pipe connection portions such that the projection portions of the two refrigerant pipe connection portions projected on the surface of the first outer plate are spaced in the left-right direction and the vertical direction. Is arranged in the notch portion of the outer box formed by the first outer plate and the second outer plate, so that the lower side and the side surface side of the first outer plate of the indoor unit main body which is the open side are arranged. External refrigerant piping can be easily connected from the opposite side to the refrigerant piping connection portion.
Further, the two refrigerant pipe connection portions are arranged so as to be inclined so that the refrigerant pipe connection portion closer to the second outer plate is lower than the refrigerant pipe connection portion farther away, and the upper portion of the first outer plate. Since the integral pipe fixture attachment part extending above the refrigerant pipe connection part is provided from the upper part of the second outer plate, the second lower part and the second side part of the indoor unit main body which is the open side are provided. The external refrigerant pipe can be easily connected from the opposite side of the outer plate to the refrigerant pipe connection part, and the fixing work of the external refrigerant pipe connected to the refrigerant pipe connection part can be performed with the pipe fixing part attached to the pipe fixing part attachment part. Easy to do.
In addition, the bottom surface of the pipe fixture attachment portion is inclined corresponding to the inclined arrangement of the two refrigerant pipe connection portions, and is inclined so that the first outer plate side is above the opposite side, so that the refrigerant pipe connection When connecting the external refrigerant pipe at the section, a space for tightening the nut or the like is widened, and the tightening work becomes easy.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is an exploded perspective view showing an indoor unit main body according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view showing a heat exchanger, a fan, a drain pan, a suction port, and an outlet of the indoor unit main body. 3 is a view showing the relationship between the refrigerant pipe, the refrigerant pipe connection portion, the drain cover, and the drain pan of the indoor unit main body, as viewed from the side of the indoor unit main body, and FIG. FIG. 5 is a diagram showing a refrigerant pipe connection portion, a pipe fixing plate and a pipe fixing plate mounting portion of the machine main body, and is a view seen from the back side of the indoor unit main body, and FIG. 5 is a side view of the indoor unit main body, FIG. 6 is a view showing a state in which the pipe fixing plate of the indoor unit main body is similarly mounted with the convex side on the front, as viewed from the back side of the indoor unit main body, and FIG. 7 is also a pipe of the indoor unit main body. It is a figure showing the state where the fixed plate was attached to the front side of the fixing plate, the back side of the indoor unit body FIG. 8 is a perspective view showing the pipe connecting part and the pipe fixing plate of the indoor unit body, and FIG. 9 is also fixing the external refrigerant pipe connected to the pipe connecting part to the pipe fixing plate. FIG. 10 is a cross-sectional view of an external refrigerant pipe that is similarly connected to the indoor unit main body.

As shown in FIGS. 1 and 2, the indoor unit main body is disposed on the rear side, and is disposed on the front side of the motor 8 that rotationally drives the fan 2 in the casing 1, and is ventilated by the refrigerant and the fan 2 in the refrigerant pipe. The heat exchanger 3 for exchanging heat with the air to be collected, the drain pan 5 for collecting the drain dripping from the heat exchanger 3, the refrigerant pipe connection parts 7 and 7 and the refrigerant pipe connection part 7 which are the front ends of the refrigerant pipes of the heat exchanger 3 , 7 and the drain receiving part 4 and the like flowing into the drain pan 5 are received in the outer box 6. The opening at the bottom of the outer box 6 is closed by a bottom plate 17, and the outer box 6 has a suction port provided at the rear side and the upper side as an inlet of the fan 2 and a blower provided at a front side as an outlet. An exit is provided. In addition, the white arrow of FIG. 2 shows the air inlet and outlet of the indoor unit main body.
Two refrigerant pipes of the liquid pipe and the gas pipe of the heat exchanger 3 are connected to an external refrigerant pipe 9 connected to an outdoor unit body (not shown). The refrigerant pipe of the heat exchanger 3 and the external refrigerant pipe 9 outside are connected by two refrigerant pipe connecting portions 7 and 7 that are the front ends of the refrigerant pipe of the heat exchanger 3.

  The refrigerant pipe connection portions 7 and 7 are the first outer plate as a tip portion of the refrigerant pipe protruding from the first outer plate 6a constituting a part of the outer box 6 from the heat exchanger 3 side in the indoor unit body. It is arrange | positioned at 6 A of notches of the outer box 6 formed of the 2nd outer plate 6b which comprises a part of outer box 6 similarly to 6a. That is, on the rear side of the heat exchanger 3 installed at the front part of the indoor unit body, on the right side, the first outer plate 6a arranged in the vertical direction and the fan 2 installed at the rear part of the indoor unit body. On the right side, a first notch 6A on the right rear portion of the outer box 6 formed by a second outer plate 6b extending rearward and orthogonal to the left end of the first outer plate 6a Two refrigerant pipe connection parts 7 and 7 which are the front-end | tip parts of the refrigerant | coolant pipe | tube of the heat exchanger 3 which protrude at right angles to the outer plate 6a are arranged side by side.

  The positional relationship between the two refrigerant pipe connecting portions 7 and 7 is such that the projection portion obtained by projecting the two refrigerant connecting pipes 7 and 7 onto the first outer plate 6a in the pipe protruding direction has a predetermined interval in the left-right direction. In addition, the distance closer to the second outer plate 6b is set to a predetermined amount lower than the distance farther away. That is, the two refrigerant pipe connection portions 7 and 7 are spaced apart from each other at a predetermined interval, and the refrigerant pipe connection portions 7 near the second outer plate 6b are spaced apart from each other by a predetermined amount. Open and arranged side by side on a plane parallel to the first outer plate 6a. Therefore, when viewed from the back side of the indoor unit main body, as shown in FIGS. 4, 6, and 7, it is inclined so that the right side is the bottom and the left side is the top.

A pipe fixture attaching portion 11 is provided above the refrigerant pipe connecting portions 7 and 7, and external refrigerant pipes 9 and 9 connected to the refrigerant pipe connecting portions 7 and 7 are connected to the pipe fixture attaching portion 11. The pipe fixing plate 10 and the pipe presser 16 are fixed. The pipe fixture attachment portion 11 extends from the upper portions of the first outer plate 6a and the second outer plate 6b to above the refrigerant pipe connection portions 7, 7. As shown in FIGS. 4, 6, and 7, the bottom surface of the pipe fixing part 11 has a right side as viewed from the rear side of the indoor unit body as shown in FIGS. Inclined so that the left side is the top. Furthermore, as shown in FIG. 5, the bottom surface of the pipe fixture attachment portion 11 is formed to be inclined so as to rise from the rear side toward the front side. Then, the refrigerant | coolant piping connection parts 7 and 7 are spaced apart in the up-down direction, and are made into the inclination arrangement | positioning, By the refrigerant | coolant piping connection parts 7 and 7, the right side surface side of an indoor unit main body, and downward (drain pan 5, The bottom plate 17 and the drain receiving component 4 are removed), and the connection work of the external refrigerant pipe becomes easy. Moreover, since the bottom face of the pipe fixture attaching portion 11 for attaching the pipe fixture for fixing the external refrigerant pipes 9 and 9 after connection is similarly inclined, the external refrigerant pipes 9 and 9 after connection are easily fixed. . Furthermore, since the bottom surface of the pipe fixture attachment portion 11 is formed so as to rise from the rear side toward the front side, the distance between the refrigerant pipe connection portions 7 and 7 and the bottom surface of the pipe fixture attachment portion 11. When the refrigerant pipe connection portions 7 and 7 are connected, it is easy to perform operations such as nut tightening.
In addition, as shown in FIG. 1 etc., although the refrigerant | coolant piping connection parts 7 and 7 have installed the support plate 15 in the middle with the 1st outer plate 6a, if it carries out like this, the refrigerant | coolant piping connection part 7 will be provided. 7 can be installed more stably.

The pipe fixing plate 10 used when fixing the external refrigerant pipes 9 and 9 connected to the refrigerant pipe connecting parts 7 and 7 is attached to the bottom surface of the pipe fixing part attaching part 11 with screws or the like, but protrudes to one side. A concave portion 10b is formed on the opposite side of the portion 10a and can be used depending on the outer diameter of the external refrigerant pipe 9. That is, the standard external refrigerant pipe 9 is attached so that the convex portion 10a side is on the outside, and the large-diameter external refrigerant pipe 9 having a large amount of heat insulating material is attached so that the concave portion 10b side is on the outside. In this way, when the external refrigerant pipes 9 having different diameters are connected, the refrigerant pipe connecting portion 7 and the external refrigerant pipe 9 can be centered. 6 is for standard piping with the convex portion 10a attached to the outer side of the pipe fixing plate 10, and FIG. 7 is for large pipe diameter with the concave portion 10b attached to the outer side. The distance c between the refrigerant pipe connection portion 7 and the pipe fixing plate 10 is larger in FIG. 7 than in FIG. 6, and connection and fixation of the highly heat-insulating refrigerant pipe having a large outer diameter is possible. The external refrigerant pipes 9, 9 connected to the refrigerant pipe connection parts 7, 7 are fixed on the pipe by the pipe presser 16 as shown in FIG. 9 on the two convex parts or concave parts formed on the surface of the pipe fixing plate 10. Fixed to the plate 10. By separately using the convex portion 10a and the concave portion 10b of the pipe fixing plate 10 depending on the outer diameter of the external refrigerant pipe 9 to be connected in this way, a common drain receiving component 4 described later can be used.
FIG. 10 is a cross-sectional view of the external refrigerant pipe 9, but a heat insulating material 14 is wound around the outside of the copper pipe 13. The external refrigerant pipe 9 has a standard (general) and a high heat insulation. Compared with a standard (general) high heat insulation, the heat insulating material 14 is thicker and the outer diameter b is larger.

As shown in FIG. 1, a drain receiving component 4 is provided below the refrigerant pipe connection portions 7 and 7. The drain receiving part 4 is a cover that covers the pipe connection parts 7, 7. The upper part and the heat exchanger 3 side are open, and two openings for taking out the external refrigerant pipe 9 are provided on the side opposite to the heat exchanger 3. The cover has passage ports 4a and 4a for the external refrigerant pipes 9 and 9, and the cover depth increases toward the heat exchanger 3 side. And the upper part of both sides is attached to the pipe fixing plate attaching part 11 by screwing.
As shown in FIG. 3, the drain receiving component 4 is inclined toward the drain pan 5, and the tip is disposed on the drain pan 5 by mounting. Therefore, water droplets due to condensation on the refrigerant pipe connecting portions 7 and 7 can be flowed to the drain pan 5 by the drain receiving component 4, and there is no need to perform a troublesome work of winding a heat insulating material around the refrigerant pipe connecting portions 7 and 7. .

  As described above, as shown in FIG. 1 and the like, the refrigerant pipe connecting portions 7 and 7 are arranged in the notch 6A of the outer case 6 on the right rear portion of the indoor unit body, but the notch 6A of the outer case 6 is located on the left rear portion. In this case, the same effect can be obtained by adopting the same structure as described above.

  Further, the refrigerant pipe connection portions 7 and 7 are inclined with the second outer plate 6b close down, but may be inclined with the second outer plate 6b close up. The right side surface and the lower side of the indoor unit main body are opened with respect to the connection portions 7 and 7, and the connection work becomes easy. However, in this case, the interval between the refrigerant pipe connection portions 7 and 7 is increased as a whole without inclining the bottom surface of the pipe fixture attachment portion 11.

  In this indoor unit main body, the projection part of the two refrigerant pipe connection parts 7 and 7 which projected the two refrigerant pipe connection parts 7 and 7 on the surface of the 1st outer plate 6a is the left-right direction and the up-down direction. And the refrigerant pipe connection part 7 closer to the second outer plate 6b is inclined to be lower than the refrigerant pipe connection part 7 farther away, and the first outer An integrated pipe fixture attachment portion 11 extending above the refrigerant pipe connection portions 7 and 7 is provided from the upper portion of the plate 6a and the upper portion of the second outer plate 6b, and the bottom surface of the pipe fixture attachment portion 11 is 2 Since the refrigerant pipe connection portions 7 and 7 are inclined corresponding to the inclined arrangement, the refrigerant pipe connection is made from the opposite side of the second outer plate 6b on the lower side and the side of the indoor unit main body on the open side. The external refrigerant pipes 9 and 9 can be easily connected to the parts 7 and 7, and the refrigerant distribution can be performed by the pipe fixtures attached to the pipe fixture attachment parts 11. Fixing work of the external refrigerant pipe 9, 9 connected to the connection portions 7 can be easily.

  Moreover, in this indoor unit main body, the upper part and the 1st outer plate 6a side open, and the cross-sectional substantially U shape which has the passage port 4a through which the external refrigerant | coolant piping 9 and 9 passes on the opposite side to the 1st outer plate 6a side. The drain receiving part 4 is installed so as to surround the refrigerant pipe connection parts 7 and 7 from below and the first outer plate 6a side is inclined downward, and the dripping water from the refrigerant pipe connection parts 7 and 7 is supplied. Since it flows to the drain pan 5 disposed below from the opening on the first outer plate 6a side, the work of winding the heat insulating material around the refrigerant pipe connecting portions 7 and 7 that are cooled and exposed to the outside air during the cooling operation is omitted. it can.

  Moreover, in this indoor unit main body, the drain receiving part 4 having a substantially U-shaped cross section is attached to the pipe fixture attaching part 11 so as to surround the refrigerant pipe connecting parts 7 and 7 from below, and a convex portion is formed on one surface. A pipe fixing plate 10, which is a plate-like body having 10 a and having a recess 10 b on the other surface, is attached to the bottom surface of the pipe fixture attaching portion 11, and is connected to the refrigerant pipe connecting portions 7, 7. Depending on the size of the outer diameter, when the outer diameter is large, it is mounted so that the concave side is on the outside, and when the outer diameter is small, it is mounted so that the convex side is on the outside, so the outer diameter is large Even if the external refrigerant pipes 9 and 9 for high heat insulation are connected to the refrigerant pipe connecting portions 7 and 7, the drain receiving component 4 can be attached.

  Moreover, in this indoor unit main body, while the bottom face of the pipe fixture attachment part 11 is inclined corresponding to the inclined arrangement of the two refrigerant pipe connection parts 7 and 7, the first outer plate 6a side is from the opposite side. Since it is tilted so as to be upward, when connecting the external refrigerant pipes 9 and 9 with the refrigerant pipe connecting portions 7 and 7, a space for tightening the nut 12 and the like is widened, and the tightening work is facilitated.

  The indoor unit main body, the blower grill connected to the indoor unit main body to blow conditioned air into the room, the suction grill connected to the indoor unit main body by an air passage, and sucking indoor air, the indoor unit main body and the refrigerant The air conditioner including the outdoor unit connected by the external refrigerant pipes 9 and 9 which are pipes is connected to the external refrigerant pipes 9 and 9 at the refrigerant pipe connection parts 7 and 7 by the indoor unit body having the above-described effects. In connection, the drain receiving part 4 can be attached regardless of the outer diameter of the external refrigerant pipes 9 and 9 to be connected, which eliminates the need to wrap the refrigerant pipe connecting parts 7 and 7 with a heat insulating material. It has the effect that it can be fixed with a nut 12 or the like.

  The indoor unit body of the present invention can be effectively used particularly for an air conditioner in which the indoor unit body is installed in a wall, a ceiling, or under a floor.

It is a disassembled perspective view which shows the indoor unit main body by Embodiment 1 of this invention. It is sectional drawing which similarly shows the heat exchanger, fan, drain pan, suction inlet, and blower outlet of an indoor unit main body. It is the figure seen from the side of the indoor unit main body which similarly shows the relationship between the refrigerant | coolant piping of an indoor unit main body, a refrigerant | coolant piping connection part, a drain cover, and a drain pan. It is the figure seen from the back side of the indoor unit main body which similarly shows the refrigerant | coolant piping connection part, the piping fixing plate, and the piping fixture plate attachment part of an indoor unit main body. It is a side view of an indoor unit main body similarly. It is the figure seen from the back side of the indoor unit main body which shows the state which similarly attached the piping fixing plate of the indoor unit main body to the front (outside). It is the figure seen from the back side of the indoor unit main body which shows the state which similarly attached the piping fixing plate of the indoor unit main body to the front side. It is a perspective view which similarly shows the piping connection part and piping fixing plate of an indoor unit main body. It is a perspective view which shows the state which fixes the external refrigerant | coolant piping similarly connected to the pipe connection part to a pipe fixing board. It is sectional drawing of the external refrigerant | coolant piping similarly connected to an indoor unit main body.

Explanation of symbols

2 Fan, 3 Heat exchanger, 4 Drain receiving part, 4a Drain receiving part passage, 5 Drain pan, 6 Outer box, 6A Notch part of outer box, 6a First outer plate, 6b Second outer plate, 7 Refrigerant piping connection part, 10 Pipe fixing plate, 10a Convex part, 10b Concave part, 11 Piping fixture attaching part.

Claims (4)

An outer box containing a heat exchanger, a fan, and the like, and having an air inlet for sucking air by the fan and an air outlet for blowing air after air conditioning by the heat exchanger;
A first outer plate that constitutes a part of the outer box and is arranged in a vertical direction, wherein two refrigerant pipes of the heat exchanger protrude from the heat exchanger side; ,
A second outer plate that also constitutes a part of the outer box, is arranged vertically in a direction perpendicular to the first outer plate, and extends toward the protruding direction of the refrigerant pipe of the heat exchanger; ,
A refrigerant pipe connecting portion connected to an external refrigerant pipe, which is disposed in a notch portion of the outer box formed by the first outer plate and the second outer plate, Two refrigerant pipe connection portions that are the tip portions of the two refrigerant pipes,
Said two refrigerant pipe connecting portion, the projection portion of the two refrigerant pipe connection part which is projected onto the surface of the first outer plate, have a spacing in the lateral direction and the vertical direction, the first 2 is arranged so as to be inclined so that the refrigerant pipe connection part closer to the outer plate is lower than the refrigerant pipe connection part farther away,
In addition, an integral pipe fixture attachment portion extending above the refrigerant pipe connection portion from the upper portion of the first outer plate and the upper portion of the second outer plate is provided, and the bottom surface of the pipe fixture attachment portion Is tilted so that the first outer plate side is above the opposite side, and is tilted corresponding to the tilted arrangement of the two refrigerant pipe connecting portions . A drain receiving part having a substantially U-shaped cross section having a passage opening through which an external refrigerant pipe passes on the upper side and the first outer plate side and on the opposite side to the first outer plate side, and the refrigerant pipe connecting portion below A drain pan that is disposed so as to be surrounded by the first outer plate and is inclined so that the first outer plate side is inclined downward, receives dripping water from the refrigerant pipe connection portion, and is disposed below from the opening on the first outer plate side The indoor unit main body according to claim 1 , wherein the indoor unit main body is flown through. A pipe fixing plate, which is a plate-like body having a convex portion on one surface and having a concave portion on the other surface, is attached to the bottom surface of the pipe fixture mounting portion, and is connected to the external refrigerant pipe connected to the refrigerant pipe connecting portion. depending on the size of the diameter, when the outer diameter of the large, installed so the concave side is outside, when the outer diameter is smaller, according to claim 2 in which the convex side is equal to or attached to the outer side The indoor unit body described in 1. The indoor unit main body according to any one of claims 1 to 3, a blow grill that is connected to the indoor unit main body and blows conditioned air into a room, and is connected to the indoor unit main body by an air passage. An air conditioner comprising: a suction grill for sucking indoor air; and an outdoor unit connected to the indoor unit body by a refrigerant pipe.

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