JPS63306328A - Air conditioning apparatus - Google Patents

Abstract

PURPOSE:To decrease an installation area in the ceiling built-in type air conditioning apparatus by making a part of an auxiliary drain pan recessed toward the inner direction, and by installing a drain pump in the recessed part. CONSTITUTION:The drained water dropping from heat exchangers 14, 15 is dropped and collected in a main drain pan 33 and an auxiliary drain pan 34. As those drain pans 33, 34 are shallow on their left sides and designed to become deeper toward the recessed part 36 on their right sides, the drained water runs toward the right side to gather in the recessed part 36, and then be sucked and exhausted by a drain pump 37 installed on the recessed part 36. By this constitution, decrease of installation area as against the size of the unit can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to an air conditioner embedded in a ceiling.

(B) Prior Art An example of the structure of an air conditioner embedded in a ceiling is disclosed in Japanese Utility Model Publication No. 60-65530.

In the air conditioner shown in this publication, a drain pump is attached to the outer surface of the main body of the air conditioner.
The drain water generated inside the main unit was sucked up by a drain pump and discharged outside the main unit.

(c) Problems to be solved by the invention In such an air conditioner, since the drain pump is attached to the outer surface of the main body, there is a space between the main body and the opening in the ceiling surface into which the main body is fitted. It was necessary to create a gap that would allow for service and inspection of the drain pump. For this reason, the opening in the ceiling surface is large compared to the size of the main body, and there is a risk that the installation area of the air conditioner will become large.

An object of the present invention is to provide an air conditioner in which the installation area on the ceiling surface is not too large compared to the size of the main body.

(d) Means for solving the problem In order to achieve this object, the present invention disposes two heat exchangers facing each other at a distance inside the housing of an air conditioner, and A main dew pan located below the vessel,
In an air conditioner in which a drain pan is formed by an auxiliary dew pan that connects the main dew pan, a part of the auxiliary dew pan is recessed inward, and a drain pump is disposed in this recess. be.

(*) The drain pump is housed in the space sandwiched between the two heat exchangers, and by housing the drain pump in the space, the external dimensions of the casing are prevented from increasing.

(F) Embodiment Figure 2 is an exploded perspective view of the air conditioner 1 embedded in the ceiling, where 2 is an outer panel (housing) bent into a substantially U-shape so that the opening is positioned downward, and 3 is an exploded perspective view of the air conditioner 1 that is embedded in the ceiling. A reinforcing piece 5 is welded to the upper surface 4 of the outer panel 2, a cross-flow fan 5 is disposed along the bent portion 6 of the outer panel, and a pair of cross-flow fans 7 is disposed on the left side of the cross-flow fan 5. The flange piece 8 of the mounting plate 7 is attached along the inner surface 9 of the bent portion 6 of the outer panel 2.The left side of the mounting plate 7 is provided with a cross-flow fan 5 for driving the cross-flow fan 5. electric motor 10
is installed. A bearing plate 11 is disposed on the right side of the cross-flow fan 5, and a flange piece 12 is attached along the inner surface 9 of the bent portion 6 of the outer plate 2. Reference numeral 13 denotes a heat exchanger assembly, in which both tube plates 1 of a plate-fin type heat exchanger 14 and 15 are arranged facing each other in a substantially V-shape.
6.17 is connected to a trapezoidal mounting plate IB, and these reheat exchangers 14.15 are connected by one refrigerant vibrator 19 and one hot water vibrator 20. In this way, this assembly 13 can be handled as one unit. The tube sheets 16 and 17 of the heat exchangers 14 and 15 are respectively attached to the mounting plate 7. 21, 22 is a service opening formed at the end of the folded part 6 of the outer panel 2, and 23 is an auxiliary plate that closes this frontage 21 and the side opening 24 connected to this opening, which is bent into an abbreviated shape. It is being 25 is a U-shaped notch formed in the long piece of this auxiliary plate 23. 26
is an electrical equipment box with an opening on the lower surface, and the left side of the outer panel 2 is closed by the left side surface 27 of the electrical equipment box 26 and the long piece of the auxiliary plate 23.

2B is a right side plate that closes the right side of the outer plate 2, and has a notch 29 in the center, and this notch 29 is covered with an outer cover 30.

31 is a frame-shaped drain pan with a ventilation hole 32 formed in the center, and an auxiliary dew pan 34 that connects the main dew pan 33 and this main dew pan 31.
The flow channels 35 provided on the four sides are connected to one. Furthermore, the depth of these flow channels is such that the flow channel of the left side auxiliary dew pan 34 is the shallowest, and the flow channel 35 of the right side auxiliary dew pan 34 is the deepest through the flow channel 35 of the main dew pan 33. There is. This right side auxiliary dew pan 3
4 is recessed inward, and drain water is stored in this recess 36. This drain pan 31 is the heat exchanger 1
4.15, the lower parts of both the left and right heat exchangers 14.15 are connected to the main dew pan 33, and the left mounting plate 18 and right mounting plate (described later) connect the reheat exchanger. The lower portions of the auxiliary dew pans 34 are respectively located.

Therefore, the drain water dripping from both the left and right heat exchangers 14.15 goes to the main dew pan 33, and the drain water dripping from the left and right U-shaped pipes of the reheat exchanger 14.15 goes to the auxiliary dew pan 34, respectively. It is received and collected in the recessed part 36. 3
Reference numeral 7 denotes a cover that covers the drain pump (see FIG. 1) disposed in the recessed portion 36. Then, the drain water accumulated in the recessed portion 36 is sucked up by the drain pump and discharged to the outside of the machine. Incidentally, the outer edge of the drain pan 31 has a claw 38 extending outward, and the lead wire from the drain pump is engaged with the claw 38.

39 is a decorative panel, which has a suction grille 40 in the center and horizontally elongated discharge ports 41 on both sides of the suction grille. This decorative panel 39 is applied to the lower part of the outer panel 2, and when the decorative panel 39 is applied to the outer panel 2 in this way, the suction grill 40 is placed in a V-shaped exchanger 14. The discharge ports 41 face the cross flow fans 5, respectively. One attachment hole 42 close to the discharge port 41 matches the screw hole 43 of the flange piece 8 of the attachment plate 7, and thus the decorative panel 39 can be attached to the outer panel 2 with screws.

In such an air conditioner 1, by rotating the cross flow fan 5, indoor air is transferred to the heat exchangers 14 and 15 facing each other in a V-shape via the suction grill 40.
Introduced into the space between comrades. The air introduced into this space is divided into the heat exchangers 14 and 15, where it exchanges heat with the refrigerant flowing in the heat exchangers, and is blown out from the respective discharge ports 41.

FIG. 1 is a vertical cross-sectional view of the main part of this air conditioner 1, and 44 is a 2
The right side mounting plate connects the right sides of the two heat exchangers 14 and 15, and its lower part is bent inward. Reference numeral 45 denotes a U-shaped holder fixed to the outer surface of the bent portion 46, and the upper piece 47 is formed into a claw shape, and the drain hose 4B can be completely engaged with this upper piece.

49 is a drain pump, and the center of its upper surface is the right side mounting plate 4.
4 is attached to the lower piece 50 of the holder 45. Reference numeral 51 denotes a suction pipe of this drain pump 49, which faces the recessed portion 36 of the drain pan 31. 52 is a drain port of this drain pump 49, to which the drain hose 48 is connected, and this drain hose 4B is connected to the upper piece 47 of the holder 45.
is launched by engagement with. Then, it is guided to the outside via the notch 53 of the outer cover 30.

The cover 37 that covers the front, rear, and left sides of the drain pump 49 has a substantially U-shaped cross section, and has an upper end 54.
is fixed to the inner surface of the right side mounting plate 44, and the lower end 55 is fixed to the drain pan 31.

Electrode rods 56 for detecting the water level of drain water are attached to a total of four locations at the inner lower end and corner of this cover 37 (one electrode rod is hidden and cannot be seen in FIG. 2).
The lengths of the electrode rods 56 that protrude downward from the lower edge of the cover 37 are all different, and the longest electrode rod and the third electrode rod form a pair to control the operation of the drain pump. The electrode rod having the second length and the electrode rod having the shortest length form a pair to control the operation of the air conditioner.

That is, drain water accumulates in the recess 36, the water level gradually rises, and when the water touches the third length electrode rod, the drain pump 49 is operated. Even with this operation, the water level of the drain water does not fall but rises, and when the drain water touches the electrode rod of the shortest length, the operation of the air conditioner 1 is stopped.

Since the drain pump 49 is disposed in the recessed part 36 of the drain pan 31 in this way, the rising part 57 of the drain hose 48 connected to this drain pump 49 is connected to the drain pan 31.
It is located above. For this reason, the outer cover 30 serving as the side wall of the outer plate 2 can be brought closer to the end of the drain pan 31. In addition, the decorative panel 39 is installed with the outer panel 2 embedded in the ceiling.
If the drain pump 49 is removed, and then the cover 37 is removed by inserting the hand into the ventilation port 32, the left side of the drain pump 49 will be exposed and service inspection of the pump 49 can be performed.

(G) Effects of the Invention As described above, the air conditioner of the present invention has two heat exchangers arranged facing each other, and a main dew pan located below the heat exchanger and a main dew pan located below the heat exchanger. A drain pan is formed by connecting the auxiliary dew pan, and a part of the auxiliary dew pan is recessed inward, and the drain pump is installed in this recess.
The drain pump is located in a space between the heat exchangers arranged facing each other, and service inspection of the drain pump can be performed by entering the space. Therefore, there is no need to provide a space between the main unit and the opening in the ceiling for service inspection of the drain pump, and the size of the main unit and the opening in the ceiling can be almost matched, reducing the installation area of the air conditioner. It can be suppressed.

Moreover, since the drain pump does not protrude from the drain pan, the rising part of the drain hose connected to the drain pump is also prevented from protruding from the drain pan, and the drain pan and the exterior body can be brought close together to reduce the size of the main body.

[Brief explanation of the drawing]

The drawings show an embodiment of the air conditioner of the present invention, and FIG. 1 is a longitudinal sectional view of the air conditioner, and FIG. 2 is an exploded perspective view showing the internal structure of the air conditioner. 14.15...Heat exchanger, 31...Drain pan,
33... Main dew pan, 34... Auxiliary dew pan, 36
... recess, 49... drain pump.

Claims (1)

[Claims] 1) A plurality of heat exchangers are arranged facing each other at intervals inside the housing, and a drain pan is constructed by a main dew pan located below both heat exchangers and an auxiliary dew pan that connects the main dew pan. An air conditioner characterized in that a part of the auxiliary dew pan is recessed inward, and a drain pump is disposed in the recess.