JPH01123926A - Ceiling-embedded type air conditioner - Google Patents

Abstract

PURPOSE:To make it possible to mount and dismount easily a heat exchanger which includes a coolant piping connecting section by installing a fixed cabinet on the upper side of a boundary defined by the position where a coolant piping is provided and a removable service cover on the lower side of the boundary defined by the cooling piping. CONSTITUTION:A cabinet in the main body 1 of an indoor unit has its upper side as the front cabinet 1 of a fixed cabinet relative to the boundary defined by a liquid piping connecting section 13 and gas piping connecting section 14, and the cabinet has its lower side as a removable middle service cover 4, and a liquid piping 11 and gas piping 12 are both placed between the front cabinet 1 and middle service cover 4, and on the lower side of the middle service cover 4 a lower service cover 3 is provided, and this cover 3 is provided with an electric power connecting opening 6. Further, the middle service cover 4 is provided with a liquid piping receiving section 7 and gas piping receiving section 8, and both sections 7 and 8 fix the piping 3 when they are respectively mounted on the front cabinet 1 and lower service cover 3. With this arrangement the unit body of a heat exchanger which includes the coolant piping connecting section can be easily removed from the main body or mounted on it.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a ceiling-embedded air conditioner, and is particularly suitable for facilitating installation and removal of a heat exchanger during maintenance service. The present invention relates to a ceiling-embedded air conditioner having a cabinet configuration.

[Prior art] A conventional ceiling-embedded air conditioner is, for example,
As described in Publication No. 9628, the refrigerant piping connection part integrated with the heat exchanger has a structure in which the piping passes through the cabinet, and the removable service cover is arranged at a position independent of the piping. It had been.

FIG. 7 is a front view of an indoor unit in a conventional ceiling-embedded air conditioner.

The indoor unit main body 28 shown in FIG.
and the ceiling surface 22, with a gasket 24 interposed between the ceiling surface 22 and the indoor unit main body 28,
A panel 23 that is exposed indoors is attached. The indoor unit main body 28 is suspended from the building structure 21 by a suspension stay 27 via a support stay 26. The liquid pipe connection part 13 and the gas pipe connection part 14 related to the refrigerant pipe connection part have a structure in which they penetrate through the cabinet via a through hole 29. Note that 6 indicates a power supply connection port.

As described above, in the conventional ceiling-embedded air conditioner, the refrigerant piping section has a structure that penetrates the cabinet.

[Problems to be Solved by the Invention] The above-mentioned conventional technology installs a heat exchanger that is integrated with a refrigerant pipe connection section housed in a cabinet.

No consideration was given to simplifying the removal process,
When installing or removing a single heat exchanger for cleaning or repair, disassemble the cabinet, braze the piping,
Furthermore, there is a problem in that a great deal of work is required, such as suspending and hoisting the indoor unit main body, and connecting electrical wiring.

The present invention was made in order to solve the problems of the prior art described above, and the service cover is removed while the blower, motor, etc. of the indoor unit main body are fixed, and the heat exchanger integrated with the refrigerant piping connection part is installed. It is an object of the present invention to provide a ceiling-mounted air conditioner that can be easily installed and removed, thereby improving the workability of heat exchanger service work.

[Means for Solving the Problems] In order to achieve the above object, the ceiling-mounted air conditioner according to the present invention has a configuration in which at least a blower, a motor, a heat exchanger, and refrigerant piping are housed in a cabinet. In a ceiling-embedded air conditioner in which an indoor unit is embedded in the ceiling, the refrigerant piping is arranged so that the refrigerant piping is sandwiched from above and below the cabinet in which the refrigerant piping connection portion to the outdoor unit in the indoor unit is located. The cabinet is divided by position, and the cabinet located below the refrigerant pipe is configured to be detachable.

In addition, the above purpose is to remove the service cover of the indoor unit at the refrigerant piping connection with the outdoor unit.
The refrigerant piping is sandwiched between the cabinet and the top and bottom,
With the service cover located at the bottom of the refrigerant piping removed, slide the heat exchanger of the indoor unit, which has been disconnected from the refrigerant piping from the outdoor unit, vertically without being obstructed by cabinets. This is achieved by creating a structure that can be lowered.

[Function] Among the cabinets constituting the indoor unit main body, the fixed cabinet is located above the refrigerant pipe arrangement position. Moreover, the service cover related to the removable cabinet is located below the location where the refrigerant piping is disposed.

With this configuration, when the service cover is removed, there is no structure that gets in the way even if the refrigerant pipe connection part is slid down vertically, so the heat exchanger including the refrigerant pipe connection part can be removed.
Can be easily installed and removed.

In addition, in the case of flare nut type refrigerant piping connections, =4- Since work such as evacuation and refrigerant sealing is required when installing and removing the heat exchanger, refrigerant passages are configured at the refrigerant piping connections. However, when disconnecting, the service work can be further simplified by using a so-called self-sealing coupling, which is a type of piping connection product that closes the refrigerant passage at the end of the connecting pipe to prevent refrigerant leakage.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

FIG. 1 is a front view showing the cabinet configuration of an indoor unit of a ceiling-mounted air conditioner according to an embodiment of the present invention, FIG. 2 is a front view of a service cover therein, and FIG. 1 is a bottom view of FIG. 1, FIG. 4 is a front view of the indoor unit main body of FIG. 1, FIG. 5 is a left side view of FIG. 4,
FIG. 6 is a plan view of FIG. 4.

In each of these figures, 1 is a front cabinet of the indoor unit main body 20, 2 is a side cabinet, 3 is a lower service cover, 4 is a middle service cover, 5 is a service opening for maintenance service, and 6 is a lower service cover. The power supply connection port opened at 3, 7 is the liquid pipe receptacle provided in the middle service 4, and 8
, 9 is the gas pipe holder provided on the middle service cover 4,
1o is a mounting hole provided in the middle service cover 4, 1o is a mounting notch provided in the middle service cover 4, 11 is a liquid pipe related to the refrigerant pipe on the indoor unit side, 12 is also a gas pipe, 13
14 is a liquid piping connection part related to the refrigerant piping connection part; 14 is a gas piping connection part; 15 is a liquid piping connection body that connects the liquid piping connection part 13 to the liquid piping 17 that leads to the outdoor unit; 16 is A gas pipe connection body 19 connects the gas pipe connection part 14 to the gas plumber 8 leading to the outdoor unit,
The heat exchanger 20 in the indoor unit includes at least a blower (not shown), a motor (not shown), a heat exchanger 19,
The indoor unit main body in which the liquid pipe 11, gas pipe 12, electrical parts, etc. are housed in the cabinet in the forward direction, 21 is the building structure, 22 is the ceiling surface, 23 is the panel of the indoor unit, 2
4 is a gasket, 25 is a water receiver provided at the bottom of the heat exchanger 19, 26 is a support stay, and 27 is a hanging stay.

The indoor unit main body 20 of this embodiment is suspended from the building structure 21 by a suspension stay 27 via a support stay 26 . The heat exchanger 19 is housed in a cabinet, and the liquid piping connections 13 and gas piping connections 14 of the liquid piping 11 and the gas piping 12, which are related to the refrigerant piping connections to the outdoor unit, are located on the outer surface of the cabinet. .

In addition, in the description of this example, a blower, a blower motor,
The contents such as electrical parts and the like are omitted from illustration because they have no direct relation to the cabinet configuration.

A panel 23 exposed indoors is attached between the indoor unit main body 20 and the ceiling surface 22 via a gasket 24.

In this way, a ceiling-embedded air conditioner is constructed in which room air is sucked in from the center of the panel 23, and air that has been heat-exchanged through the heat exchanger 19 is blown out from around the outer periphery of the panel 23. .

In this embodiment, the cabinet in which the liquid piping connection section 13 and the gas piping connection section 14 are located in the indoor unit main body 1 is constructed so that these refrigerant piping, that is, the liquid piping 11 and the gas piping 12 are sandwiched between these refrigerant piping. The cabinet configuration is divided by the location of the cabinet.

With the liquid piping connection part 13 and the gas piping connection part 14 as boundaries, the upper side is a fixed cabinet front cabinet 1, and the lower side is a removable middle service cover 4, which is a liquid piping 11.
and the gas pipe 12 are sandwiched between them, and a lower service cover 3 is provided below the middle service cover 4, and a power supply connection port 6 is provided in this.

In addition, the middle service cover 4 is provided with a liquid pipe holder part 7 and a gas pipe holder part 8, and is attached to the front cabinet 1 and the lower service cover 3 using the mounting holes 9 and the mounting notches 10. When installed, the piping is fixed. Note that the front cabinet 1 and the lower service cover 3 are attached and fixed to the side cabinet 2.

In such a ceiling-mounted air conditioner, as shown in FIG. 1, it is possible to inspect and clean the heat exchanger 19, water receiver 25, etc. through the service opening 5 with the middle service cover 4 removed. can.

In addition, after removing the lower service cover 3 and removing the water receiver 25, the heat exchanger 19 can also be connected to the liquid pipe connection part 13 by simply separating the liquid pipe connection body 15 and the gas pipe connection body 16 from the indoor unit main body 20 side. Moreover, it can be easily slid down in the vertical direction while being integrated with the gas piping connection part 14, making it possible to improve service workability such as cleaning and repair of the heat exchanger.

In addition, the liquid pipe connection body 15 and the gas pipe connection body 16 are
If you use a so-called self-seal type coupling, which is a piping connection product that forms a refrigerant passage when piping is connected, and prevents refrigerant leakage by closing the refrigerant passage at the end of the connecting pipe when disconnecting, it will make service work even easier. It can be simplified.

According to this embodiment, in a ceiling-embedded air conditioner, the heat exchanger alone can be removed from and reinstalled from the main body without moving the blower, motor, or other electrical parts. It is possible to provide an indoor unit that significantly improves workability for service work such as cleaning and repairing equipment.

In the above-mentioned embodiment, the middle service cover 4 provided to cover the service opening 5 and the heat exchanger 19 are easily attached and detached as a cabinet component located under the liquid pipe 11 and the gas plumber 2. Although an example in which a lower service cover 3 is provided has been described, the present invention is not limited to this, and it is also possible to form the cabinet located below the refrigerant piping as a detachable integral body.

[Effects of the Invention] As described above, according to the present invention, the service cover can be removed while the blower, motor, etc. of the indoor unit main body are fixed, and the heat exchanger integrated with the refrigerant piping connection part can be installed separately. Therefore, it is possible to provide a ceiling-embedded air conditioner that can be easily removed and improve workability in servicing a heat exchanger.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the cabinet configuration of an indoor unit of a ceiling-mounted air conditioner according to an embodiment of the present invention, FIG. 2 is a front view of a service cover therein, and FIG. 1 is a bottom view of FIG. 1, FIG. 4 is a front view of the indoor unit main body of FIG. 1, FIG. 5 is a left side view of FIG. 4,
FIG. 6 is a plan view of FIG. 4, and FIG. 7 is a front view of an indoor unit in a conventional ceiling-embedded air conditioner. 1...Front cabinet, 2...Side cabinet, 3
...lower service cover, 4...middle service cover, 5.
...Service opening, 11...Liquid piping, 12...Gas piping, 13...Liquid piping connection, 14...Gas piping connection, 19...Heat exchanger, 20...Indoor Unit body, 21... Building structure, 22. Ceiling surface.

Claims (1)

[Claims] 1. In a ceiling-embedded air conditioner in which an indoor unit in which at least a blower, a motor, a heat exchanger, and refrigerant piping are housed in a cabinet is embedded in the ceiling, the refrigerant for the outdoor unit in the indoor unit is The cabinet in which the piping connection section is located is a cabinet that is divided along the installation position of the refrigerant piping so as to sandwich the refrigerant piping from above and below, and the cabinet located below the refrigerant piping is removable. A ceiling-mounted air conditioner characterized by: 2. In the product described in claim 1, the cabinet located below the refrigerant pipe has a middle service cover provided to cover the service opening, and a connection portion between the heat exchanger of the indoor unit and the refrigerant pipe. A ceiling-embedded air conditioner comprising a lower service cover that can be taken out downward as a whole.