JPH0763374A - Outdoor equipment of air conditioner - Google Patents

Abstract

PURPOSE:To facilitate connection work between the end of a refrigerant tube and a connection port of a packed valve and enable workability to be enhanced. CONSTITUTION:Where packed valves 3a and 3b are projectingly installed so as to connect refrigerant tubes Pa and Pb extended from indoor equipment to a side surface 1a of an indoor equipment body 1, connection ports 4a and 4b of each of the packed valves 3a and 3b are tilted on the slant and a marking unit 5 is installed to the side surface of the outdoor equipment body 1 so as to display a factual amount of inclination at the ends of the refrigerant tube connected to the refrigerant tube connection ports 4a and 4b of the packed valves 3a and 3b and a factual cutting position of the refrigerant tube ends.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor unit for an air conditioner, and more particularly to an improvement of a packed valve on a side surface of an outdoor unit main body and a pipe connection structure thereof.

[0002]

2. Description of the Related Art A commonly used air conditioner comprises an indoor unit installed in an air-conditioned room and an outdoor unit installed outdoors in a building connected via a refrigerant pipe or the like. The outdoor unit should be as close as possible to the wall of the building so that it will not get in the way.

A packed valve is provided on the side surface of the outdoor unit main body so as to communicate with refrigeration cycle parts such as a heat exchanger and a compressor housed inside the main body. It is sealed at the time of factory shipment and the refrigerant gas is sealed in the refrigeration cycle parts.

At the installation site, the refrigerant pipe extending from the indoor unit is connected to the packed valve, and at the same time, the refrigerant can be conducted to the indoor unit and the outdoor unit. Conventionally, as shown in FIGS. 5 and 6, a connecting pipe structure for connecting a refrigerant pipe to a packed valve has been used.

In FIG. 5, each packed valve 3a, 3
b are provided so as to be separated in the vertical direction, and the connection ports 4a and 4b in each of them are oriented in the horizontal direction.
The refrigerant pipes Pa and Pb extending from the indoor unit are bent from the vertical direction to the horizontal direction and connected to the connection port body.

In FIG. 6, each packed valve 3a, 3
b are provided so as to be separated in the horizontal direction, and the connection ports 4a and 4b in each of them are oriented in the vertical direction.
The refrigerant pipes Pa and Pb extending from the indoor unit are once bent obliquely downward from the vertical direction, and only one refrigerant pipe Pa is further bent vertically to be connected to the one connection port body 4a. It

The other refrigerant pipe Pb is bent halfway along the one refrigerant pipe Pa, and is further bent obliquely downward to be connected to the other connection port body 4b. Regardless of the pipe connection structure, packed valve 3a,
3b and packed valve covers 50, 51 for shielding the connection ports 4a, 4b and the connections of the pipes Pa, Pb are provided, one side of which is cut away to form each refrigerant pipe P.
a and Pb are inserted.

[0008]

By the way, in the case of so-called horizontal extraction in which the connection ports 4a and 4b of the packed valves 3a and 3b are oriented horizontally, as shown in FIG. 5, the refrigerant pipes Pa and Pb are placed horizontally. The length of the bent portion must be ensured to the minimum necessary. On the other hand, if the required length is ensured, the vertical portion projects rearward from the back side of the outdoor unit body 1.

Therefore, the back surface of the outdoor unit main body 1 must be arranged with a gap from the wall surface of the installation site, which hinders the reduction of the installation space. If the protruding positions of the packed valves 3a and 3b are changed to the front surface of the outdoor unit main body 1 and the refrigerant pipes Pa and Pb are connected thereto, the rear surface of the main body can be brought into close contact with the wall surface of the installation site.

However, this time, not only the piping of the respective refrigerant pipes Pa and Pb becomes very troublesome, but also the aesthetic appearance is impaired, and the refrigerant pipes obstruct the maintenance work performed from the front side.

In the actual piping work, the refrigerant pipes Pa, P
After bending the end portion of b in a predetermined direction, the connection ports 4a, 4
Determine the connection position with b and disconnect. Then, the cut end portion is flared, the flared end portion is applied to the connection port body, and the flare nut is fastened.

However, in the case of the same figure, since the end portions of the refrigerant pipes Pa and Pb extending in the vertical direction are bent in a horizontal direction at a substantially right angle and then cut, the length is long after cutting once. Adjustment is difficult.

When the refrigerant pipes Pa and Pb are cut to a length shorter than the regular length, the flare ends are left as they are and the connection ports 4a,
Since it is located away from 4b, the connection can be made by bending the vertical portion of the refrigerant pipe at an angle.

Therefore, the outdoor unit main body 1 is always subjected to tension in the direction of floating from the installation surface, which may cause breakage deformation of the refrigerant pipes Pa and Pb. In particular, stress is applied to the flared end portion. Concentrated and cause gas leak.

Further, when the refrigerant pipes Pa and Pb are cut longer than the regular length, the flare ends are overlapped with the connection ports 4a and 4b, so that the vertical portion of the refrigerant pipe is cut short. Will be bent diagonally in the opposite direction and will be forced to connect.

However, in this case, the refrigerant pipes Pa, Pb
The flare ends of the connection ports and the connection ports 4a and 4b are misaligned with each other, which makes it difficult to perform accurate alignment and secure nut tightening cannot be performed. It is necessary to cut the end of the refrigerant tube and perform flare processing again, and in some cases, the refrigerant tube must be reconnected from the beginning.

In the structure of FIG. 6, it is difficult to set the angle at which the refrigerant pipes Pa and Pb are bent at an angle and the required length thereof. That is, the middle part of each refrigerant pipe must be bent in a three-dimensional and complicated manner, and it is difficult to accurately determine the cutting position.

When the cut end does not coincide with the position of the connection ports 4a and 4b, the position can be adjusted by changing the bending angle in the middle, but on the other hand, for removing the pipe provided in the packed valve cover 51. In some cases, the refrigerant pipes Pa and Pb may be inserted in the biased positions of the notch 52 to form a large gap, or the refrigerant pipe may come into contact with the notch so that the refrigerant pipe cannot be taken out.

Since the cutout 52 is provided on the upper surface of the cover 51, if a large gap is formed, dust and rainwater can easily enter. Further, since the refrigerant pipe is inserted, it takes time and effort to further increase the notch area.

The present invention has been made in view of the above circumstances, and an object thereof is to facilitate the work of connecting the end portion of the refrigerant pipe to the connection port body of the packed valve and to improve the workability. To provide an outdoor unit of an air conditioner.

[0021]

An outdoor unit for an air conditioner according to the present invention is a device in which a packed valve for connecting a refrigerant pipe extending from an indoor unit is projected on a side surface portion of an outdoor unit main body, Inclining the refrigerant pipe connection port body of the packed valve diagonally, on the side surface of the outdoor unit body, the actual inclination amount of the refrigerant pipe end connected to the refrigerant pipe connection port body of the packed valve, and the actual refrigerant pipe It is characterized in that a marking portion representing the end cutting position is provided.

There are two types of refrigerant pipes connected to the packed valve, one having a large diameter and the other having a small diameter, and the marking portion is provided corresponding to the large diameter refrigerant pipe. In addition, a description of piping work related to the marking portion and a piping work explanation means including an instruction of a required value and an actual length standard gauge are written on the parts constituting the side surface of the outdoor unit main body.

[0023]

When the refrigerant pipe is connected, the end portion of the refrigerant pipe may be inclined and bent along the marking portion, and the cutting position may be set according to the marking portion.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the outdoor unit of the air conditioner is
After installation on the installation site, the packed valve cover 2 forming a part of the one side portion 1a of the outdoor unit body 1 is removed. Further, by removing the cover 2, the exposed wiring lid 3 is also removed.

Since both the packed valve cover 2 and the wiring lid 3 have upper ends hooked to the outdoor unit main body 1 and lower ends screwed, they can be removed from each other.
Also, by removing the packed valve cover 2,
The two packed valves 3a and 3b protruding from the lower part of the body side surface portion 1a are exposed.

The packed valves 3a and 3b are integrally provided with connection ports 4a and 4b, and project from the vertical position in the drawing in a state inclined toward the right by a predetermined angle.

The diameters of the connection ports 4a and 4b are different from each other. The diameter of the connection port 4a on the lower side in the figure is large and the diameter of the connection port 4b on the upper side is small. The large-diameter refrigerant pipe Pa connected to the large-diameter connection port body 4a as described below is a gas refrigerant introduced into a heat exchanger (not shown) arranged in the outdoor unit body 1 during the cooling operation. The small-diameter refrigerant pipe Pb connected to the small-diameter connection port body 4b guides the liquid refrigerant drawn from the heat exchanger during the same operation.

A marking portion 5 to be described later is provided on the main body side surface portion 1a near the packed valves 3a and 3b. The engraved portion 5 has a large-diameter lower connection port body 4.
It is marked on the slope extension of a. The long line 6a is formed along the extension line, and the short line 6b is formed at the end of the long line in a direction orthogonal to the long line.

The position where the marking portion 5 composed of the long line 6a and the short line 6b is marked and the length of each line portion must be accurately expressed. On the other hand, on the back surface side of the packed valve cover 2, a name plate 7 which is a means for explaining the piping work is attached. This nameplate 7 has
The piping work description 8 as shown in FIG. 3, the piping work drawing 9 and the length standard gauge 10 are written.

Alternatively, instead of the nameplate 7, a similar format may be printed on the label sheet. The worker
By removing the packed valve cover 2 and turning it over, reading the piping work description 8 written on the name plate 7, and referring to the piping work drawing 9, all the necessary items for piping work can be known.

In particular, the length standard gauge 10 represents the actual length from the short line 6b in the engraved portion 5 to the end of the refrigerant pipe to be cut, and the operator does not have to separately prepare a scale or the like. However, you can set the exact length.

Therefore, the refrigerant pipe P extending from the indoor unit
a and Pb are hung from the upper part of the outdoor unit main body 1 and bent in the inclined state near the packed valves 3a and 3b.
As described above, the refrigerant pipe has a large diameter Pa and a small diameter Pb. In particular, the large diameter refrigerant pipe Pa is used.
The end portion is bent along the longitudinal line 6a of the marking portion 5.

That is, the worker is to check the longitudinal line 6a of the marking portion 5.
Since it suffices to bend it so that the end of the refrigerant pipe Pa overlaps with it, the work becomes easy. At this time, the small diameter refrigerant pipe Pb is bent together with the large diameter refrigerant pipe Pa. (In general, the large-diameter refrigerant pipe Pa and the small-diameter refrigerant pipe Pb are often integrated.) Then, the entire length of the length standard gauge 10 described on the name plate 7 is directly transferred to the refrigerant pipe Pa. In addition, as described in the piping work description 8 of the nameplate 7, some kind of mark may be made from here to the standard gauge length AAmm with reference to the short line 6b of the marking part 5.
This mark becomes a cutting line, and the operator can easily know the cutting position.

The large-diameter refrigerant pipe Pa and the small-diameter refrigerant pipe P
Separate from b, and cut each at the mark.
Flare processing is performed on the cut ends of the respective refrigerant pipes Pa and Pb, and the end of the large diameter refrigerant pipe Pa is connected to the lower packed valve 3
It is applied to the connection port body 4a of a.

In this way, by performing the work according to the description 8 of the piping work, the flare end portion is connected to the connection port body 4.
Accurately hits a and there is no displacement. In the refrigerant pipe Pb on the small diameter side, after flaring the cut end,
Bend it further and make the flare end the upper packed valve 3b.
It is applied to the connection port body 4b. Since it has a small diameter, it can be easily bent, and by performing the work according to the piping work description 8, the flare end accurately hits the connection port body 4b,
There is no misalignment.

Finally, by fastening a flare nut to each, the refrigerant pipes Pa and Pb can be accurately and surely connected to the connection ports 4a and 4b. After that, as shown in FIG. 3, a decorative tape T is wound around the connection ends of the refrigerant pipes Pa and Pb. Then, the cable line 11 is connected to the terminal exposed by removing the wiring lid 3, and the drain hose 12 and the refrigerant pipes Pa and Pb extending from this and the indoor unit.
Are bundled into one and wrapped with a decorative tape T.

As shown in FIG. 4, by mounting the packed valve cover 2 on the side surface 1a of the outdoor unit main body, the connection ends of the packed valves 3a and 3b, the refrigerant pipes Pa and Pb, and the cable line 11 are shielded, and necessary. All the work is completed.

In the above embodiment, the name plate 7 as the piping work explanation means including the piping work explanation 8 and the like is attached to the back surface of the packed valve cover 2, but the invention is not limited to this. The printed matter on the nameplate or label sheet may be directly attached to the side surface portion 1a of the outdoor unit main body at the portion covered by the cover 2.

[0039]

As explained above, according to the present invention, the refrigerant pipe connection port body of the packed valve is inclined and the refrigerant connected to the refrigerant valve connection port body of the packed valve is provided on the side surface of the outdoor unit main body. Since the engraved portion that represents the actual inclination amount of the pipe end and the actual cutting position of the refrigerant pipe end is provided, it is possible to facilitate the work of connecting the refrigerant pipe end to the connection port body of the packed valve, The effect is more reliable and the workability can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention in which a part of an outdoor unit main body is disassembled.

FIG. 2 is a view of a name plate which is a piping work explanation means of the embodiment.

FIG. 3 is a perspective view of the same embodiment in the middle of pipe connection.

FIG. 4 is a perspective view of the outdoor unit in the same embodiment when the piping / wiring connection work is completed.

FIG. 5 is a partial perspective view of an outdoor unit of a conventional example.

FIG. 6 is a partial perspective view of an outdoor unit of still another conventional example.

[Explanation of symbols]

1 ... Outdoor unit main body, 1a ... Side surface part, Pa, Pb ... Refrigerant pipe,
3a, 3b ... Packed valve, 4a, 4b ... Connection port body,
5 ... Engraved portion, 7 ... Piping work explanation means (name plate), 8 ... Piping work explanation, 9 ... Piping work drawing, 10 ... Length standard gauge.

Claims (3)

[Claims] 1. An outdoor unit of an air conditioner in which a packed valve for connecting a refrigerant pipe extending from the indoor unit is projected on a side surface portion of the outdoor unit main body, wherein the refrigerant pipe connection port of the packed valve is provided. Inclined diagonally, on the side surface of the outdoor unit main body, the actual inclination amount of the refrigerant pipe end connected to the refrigerant pipe connection port body of the packed valve, and a stamped portion representing the actual refrigerant pipe end cutting position. An outdoor unit of an air conditioner characterized by being provided. 2. A refrigerant pipe connected to the packed valve includes a large diameter pipe and a small diameter pipe, and the engraved portion is
The outdoor unit for an air conditioner according to claim 1, wherein the outdoor unit is provided so as to correspond to the large-diameter refrigerant pipe. 3. A component forming a side surface portion of the outdoor unit main body,
2. The outdoor unit for an air conditioner according to claim 1, further comprising a piping work explanation means including an explanation of piping work related to the marking portion and an instruction of necessary values and an actual length standard gauge.