JPH109599A - Air conditioner indoor unit - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To facilitate bending of a refrigerant pipe in an indoor unit of a wall-mounted air conditioner and prevent an accident such as a broken pipe. SOLUTION: An accommodating portion 8 is formed at a lower rear portion of a main body 1,
In the indoor unit adapted to house the liquid pipe 3 having one end connected to the refrigerant inflow side of the indoor heat exchanger, the gas pipe 4 connected to the refrigerant outflow side, and the drain pipe 5 in the housing portion 8. In addition, at least the range of the bending process of the gas pipe 4 that is bent at the time of the pipe connection work accompanying the installation of the indoor unit is constituted by the two thin tubes 4a and 4b, thereby facilitating the bending process.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit of an air conditioner, and more particularly, to a structure of a refrigerant pipe provided in a wall-mounted indoor unit.

[0002]

2. Description of the Related Art Some air conditioners are comprised of a wall-mounted indoor unit and an outdoor unit. The indoor unit and the outdoor unit are connected by a pair of refrigerant pipes for relay, a power line, a signal line, and the like, and the indoor unit has a refrigerant pipe and a drain pipe corresponding to the pair of refrigerant pipes for relay. (Resin hose) is provided. FIG. 4 shows this kind of indoor unit obliquely from the rear, and a lower part of a back surface of the main body 21 has a refrigerant pipe connected to a refrigerant inflow side of an indoor heat exchanger disposed inside the main body 21, that is, a liquid pipe. Tube 22,
A refrigerant pipe, that is, a gas pipe 23 connected to the refrigerant outflow side, and a housing part 25 that houses a drain pipe 24 and the like are formed. The liquid pipe 22, the gas pipe 23, and the drain pipe 24 housed in the housing section 25 are connected to the housing section 25 at the time of piping connection work performed when the indoor unit is installed.
The drain pipe 24 is inserted into a hole formed in the wall together with the relay refrigerant pipe, and the drain pipe 24 is separately prepared separately. It is designed to connect to a pipe. The liquid pipe 22 has a diameter of 6.35 mm, and the gas pipe 23 has a diameter of 9.52 mm or 12.7 mm. The diameter of 23 differs depending on the size (capacity) of the air conditioner, and a larger diameter may be used.

[0003]

However, when the diameter of the gas pipe is 12.7 mm or more, bending workability is deteriorated, and there is a possibility that pipe breakage may occur during pipe connection work. It will be great. Accordingly, an object of the present invention is to provide an indoor unit of an air conditioner that can prevent such pipe breakage.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has an accommodation portion formed at a lower portion of a rear surface of a main body, and the accommodation portion is provided at a refrigerant inflow side of an indoor heat exchanger. A connected liquid pipe, a gas pipe connected to the refrigerant outflow side,
In an indoor unit of an air conditioner configured to accommodate a drain pipe, at least a bending range of the gas pipe that is bent at the time of pipe connection work of the indoor unit is configured by two thin tubes. In addition, the refrigerant | coolant which flows out from the refrigerant | coolant outflow side of the said indoor heat exchanger was made into the structure which was made to divide | segment into the said two thin tubes by the distributor, and to join to the short pipe for connection by the junction.

[0005] In addition, an accommodating portion is formed at a lower portion of the back of the main body,
A liquid pipe connected via a flow divider to two refrigerant inflow sides provided in the indoor heat exchanger in the housing portion; a gas pipe connected via a merger to two refrigerant outflow sides; and a drain pipe. In the indoor unit of the air conditioner configured to accommodate the above, the gas pipe is constituted by two thin tubes, and one side of the same thin tube is separately connected to the two refrigerant outflow sides, and from the other side. The refrigerant flowing out was combined with the short pipe for connection by the merger. The sum of the opening areas of the two thin tubes was set to be larger than the opening area of the gas pipe or the connecting short pipe.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In an indoor unit constructed in accordance with the present invention, a liquid pipe and a gas pipe from an indoor heat exchanger housed in a housing section at a lower rear portion of a main body, and a drain pipe,
There is a problem with bending workability in the pipe connection work performed at the time of installation of the indoor unit.At least the bending range of large diameter gas pipes is composed of two narrow pipes, and pipe breakage that is likely to occur during pipe connection work It is designed to prevent accidents. In addition, in the case where the indoor heat exchanger has two refrigerant inflow sides and two refrigerant outflow sides, a thin tube is directly connected to each outflow side one by one, and the refrigerant flowing out from the other side is connected to a short pipe for connection by a merger. In this configuration, the number of mergers for connecting the two refrigerant outflow sides and the gas pipe, which is required when only one gas pipe is used, is reduced. The sum of the opening areas of the two thin tubes is set to be larger than the opening area of the required gas pipe or the short pipe for connection, so that a decrease in the amount of refrigerant circulated by the thin tubes is prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Fig. 1 shows the indoor unit from the back,
1 is a main body having a front panel 2, 3 is a liquid pipe having one end connected to a refrigerant inflow side of an indoor heat exchanger described later, and 4a and 4b are large tubes also connected to a refrigerant outflow side of the indoor heat exchanger. Part of a gas pipe having a diameter or a small pipe connected in place of the gas pipe, 5 is a connecting short pipe connected to two fine pipes 4a and 4b via a merger 6, and 7 is one end inside the main body 1. Drainage pipes (resin hoses) connected to a dew tray (not shown) arranged at the lower part of the indoor heat exchanger are housed in a housing part 8 formed at the lower rear part of the main body 1. I have.

FIG. 2 shows an example of connection of pipes to an indoor heat exchanger 9 disposed inside the main body 1. This indoor heat exchanger 9 is divided into three parts in the horizontal direction and the upper two parts are arranged in front and rear. The liquid tube 3 is directly connected to the refrigerant inflow side of the indoor heat exchanger 9, and the thin tubes 4 a and 4 b are connected to the indoor heat exchanger 9 via the flow divider 10 and the gas pipe 11. It is connected to the refrigerant outflow side. Note that this embodiment shows a case where there is only one refrigerant inflow side and one refrigerant outflow side of the indoor heat exchanger 9, and the thin tubes 4a and 4b are expected to be bent at the time of piping connection work accompanying the installation of the indoor unit. Is provided in the range A.

FIG. 3 shows an example of connection of pipes to an indoor heat exchanger 12 having two refrigerant inflow sides and two refrigerant outflow sides. A liquid pipe 3 is connected via a branch pipe 13 to two refrigerant inflow sides. And the thin tubes 4a and 4b are connected one by one to the two refrigerant outflow sides. The liquid tube 3 has a diameter of 6.
In order to improve the bending workability when performing pipe connection work, a diameter of 9.52 mm is used for the narrow tubes 4a and 4b. The gas pipe 11 shown in FIG. 2 has a diameter of 12.7 mm.

[0010]

As described above, the indoor unit having the above-described piping configuration has good pipe bending workability, improves work efficiency in piping connection work, eliminates work defects such as pipe breakage, and improves reliability. Is improved.

[Brief description of the drawings]

FIG. 1 is a rear perspective view of an indoor unit showing one embodiment of the present invention.

FIG. 2 is a perspective view showing an example of pipe connection to an indoor heat exchanger according to the present invention.

FIG. 3 is a perspective view showing another example of pipe connection to the indoor heat exchanger according to the present invention.

FIG. 4 is a rear perspective view of an indoor unit showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 3 Liquid pipe 4a Thin pipe 4b Thin pipe 5 Short pipe for connection 6 Combiner 7 Drain pipe (resin hose) 8 Housing 9 Indoor heat exchanger 10 Splitter 11 Gas pipe 12 Indoor heat exchanger 13 Branch pipe

Claims (4)

[Claims] A liquid tube connected to a refrigerant inflow side of an indoor heat exchanger, wherein a housing portion is formed at a lower rear portion of the main body;
In an indoor unit of an air conditioner configured to accommodate a gas pipe connected to a refrigerant outlet side and a drain pipe, at least a bending range of the gas pipe that is bent at the time of piping connection work of the indoor unit is set to two. An indoor unit for an air conditioner, comprising: a thin tube. 2. The method according to claim 1, wherein the refrigerant flowing out from the refrigerant outflow side of the indoor heat exchanger is divided into the two narrow tubes by a flow divider, and then joined to a connecting short tube by a merger. The indoor unit of the air conditioner as described. 3. A liquid pipe connected to a refrigerant inlet side provided in the indoor heat exchanger through two flow dividers, wherein the liquid storage tube is provided in a lower portion of a rear surface of the main body. In the indoor unit of an air conditioner configured to accommodate a gas pipe connected to a side via a merger, and a drain pipe, the gas pipe is configured by two thin tubes, and one side of the same thin tube is formed. An indoor unit for an air conditioner, wherein the refrigerant is separately connected to the two refrigerant outflow sides, and the refrigerant flowing out from the other side is merged into a short connecting pipe by a merging device. 4. The indoor unit of an air conditioner according to claim 1, wherein the sum of the opening areas of the two thin tubes is larger than the opening area of the gas pipe or the connecting short pipe.