JPH0429305Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to an air conditioner equipped with a cooler and a hot water coil inside the machine.

(b) Prior Art An example of the structure of an air conditioner equipped with a cooler and a hot water coil inside the machine is disclosed in Japanese Utility Model Publication No. 48-26519.

In the air conditioner disclosed in this publication, the connection fittings for the refrigerant piping of the cooler and the fittings for the water piping of the hot water coil are arranged in one place.

(c) Problems to be solved by the invention In such an air conditioner, during cooling operation,
Dew forms on the refrigerant pipes. If this dew is transmitted to water piping or other parts, there is a risk that it may easily leak out of the machine.

The purpose of this invention is to make it difficult for dew to adhere to the refrigerant piping and to prevent dew from leaking out of the machine.

(d) Means for solving the problem In order to achieve this objective, the air conditioner of the present invention has a refrigerant piping connection on one side of the electrical box installed inside the machine, and a water piping connection on the other side. A wiring connection part is provided on the surface of the electrical equipment box on the side of the connector.

(E) Effect The refrigerant piping fittings and the water piping fittings are arranged separately on both sides of the electrical box, making it easier to wrap the insulation material around the refrigerant piping and the fittings of this piping, and The wires are moved away from each other to prevent dew from adhering to the wires.

(f) Example Figure 1 shows an air conditioner 1 embedded in the ceiling.
In this exploded perspective view, 2 is an outer panel bent into a substantially U-shape so that the opening faces downward, 3 is a reinforcing piece welded to the upper surface 4 of this outer panel 2, and 5 is a bent portion of this outer panel. A cross flow fan 7 is disposed along the cross flow fan 5, and 7 is a pair of mounting plates disposed on the left side of the cross flow fan 5. It is designed so that it can be installed along 9. An electric motor 11 for driving the cross flow fan 5 is attached to the left side surface 10 of the mounting plate 7. Reference numeral 12 denotes a bearing plate disposed on the right side of the cross flow fan 5, and a flange piece 13 is attached along the inner surface 9 of the bent portion 6 of the outer plate 2. Reference numeral 14 denotes a heat exchanger assembly, which includes both tube plates 17 and 18 of plate-fin type heat exchangers 15 and 16, which are arranged facing each other in a substantially V-shape.
A trapezoidal auxiliary plate 19 is connected to the auxiliary plate 19. In this way, the assembly 14 can be handled as one piece. and heat exchangers 15 and 1, respectively.
6 tube sheets 17 and 18 are attached to the mounting plate 7. 20 is a left side plate, and this left side plate 20 is attached to the left side flange piece 21 of the outer plate 2. 22 is an electrical equipment box with an opening on the bottom surface, and has an auxiliary plate 19 and a left side plate 2.
0. 23 is the right side panel, outer panel 2
It is attached to the right flange piece 24 of. 25 is a frame-shaped drain van with a ventilation hole 26 formed in the center, and flow channels 27 are provided on each of the four sides.
These waterways are connected into one. This drain bun 25 is disposed below the assembly 14 of heat exchangers 15 and 16, with the lower part 28 of the left heat exchanger 15 connected to the flow channel 29, and the lower part 30 of the right heat exchanger 16 connected to the flow channel 31. Right side auxiliary plate 1 connecting both heat exchangers
The lower part 32 of the left side auxiliary plate 34 (not shown) is located in the flow channel 33, and the lower part 32 of the left side auxiliary plate 34 (not shown) is located in the flow channel 35, respectively.

28 is a decorative panel with a suction grill 39 in the center.
However, horizontally elongated discharge ports 40 are provided on both sides of this suction grill. This decorative panel 38 is applied to the lower part of the outer panel 2. When the decorative panel 38 is applied to the outer panel 2 in this way, the suction grill 3
Both heat exchangers 15 and 16 with 9 arranged in a V-shape
The discharge ports 40 each face the cross flow fan 5, facing the space between them. One mounting hole 41 close to the discharge port 40 matches the threaded hole 43 of the lower flange piece 42 of the mounting plate 7, and the other mounting hole 44 matches the threaded hole 46 of the flange piece 45 of the bearing plate 12. The decorative panel 38 can then be attached to the outer panel 2 with screws.

In such an air conditioner 1, both the heat exchangers 15 and 16 are integrated with a cooler and a hot water coil, with a hot water pipe 47 in the center and refrigerant pipes 48 with fins on both sides of this pipe. It is placed through. During heating, liquid heated by a boiler (not shown) or the like flows from below to above the hot water pipe 47 of the first heat exchanger 16 as shown by the solid line arrow in FIG. The hot water is led to the hot water pipe 47 of the second heat exchanger 15, where it again flows from below to above. On the other hand, during cooling, the compressor and condenser in the cooling unit (not shown) radiate heat and liquefy the refrigerant to the refrigerant pipes 4 of the two heat exchangers 15 and 16 as shown by solid line arrows in Figure 3.
I try to make it flow evenly to 8. In addition, the broken line arrow in FIG. 2 and FIG. 3 shows the flow of air.

In FIGS. 4 and 5, reference numerals 50 and 51 are inlet and outlet pipes of refrigerant pipes connected to refrigerant pipes, and connectors 52 are attached to the tips of these pipes, respectively. This connector 52 is arranged on one side 53 of the electrical equipment box 22. These pipes 50, 51 and the connector 52 are surrounded by a heat insulating material 54. Reference numerals 55 and 56 indicate inlet and outlet pipes of water pipes connected to a hot water pipe, and a connector 57 is attached to the tip of each of these pipes. This connector 57 is arranged on the other side 58 of the electrical equipment box 22. 60 is a fluid control valve disposed in the inlet pipe. Reference numeral 59 denotes a terminal board attached to the other side, to which electric wires (not shown) from outside the machine are connected.

(g) Effects of the invention As described above, the air conditioner of the invention has the water piping fittings for the hot water coil and the refrigerant piping fittings for the cooler arranged so as to sandwich the electrical box, so that the refrigerant piping and this Since the sides of the electrical equipment box are positioned around the fittings connected to the pipes to create a compact space, it is easier to spread insulation material around the refrigerant pipes and fittings. In this way, it is difficult for dew to form on the pipes and connectors, which prevents dew from being transmitted to other parts and reduces the risk of dew leaking outside the machine. In addition, the terminal board to which the electric wires are connected was attached to the water piping side of the electrical box and kept as far away as possible from the refrigerant pipes, where dew tends to accumulate during cooling, making it difficult for dew to be transmitted to this terminal board, reducing the risk of electrical leakage. It can be eliminated.

[Brief explanation of the drawing]

The drawings show one embodiment of the air conditioner of the present invention, and Fig. 1 is an exploded perspective view of the air conditioner, Fig. 2 is an explanatory diagram showing the flow of hot water and wind during heating operation of the air conditioner, and Fig. 3 is an explanatory diagram showing the flow of refrigerant and air during cooling operation of the same aircraft, FIG. 4 is a longitudinal sectional view of the main parts of the same aircraft, and FIG. 5 is a bottom view of the same aircraft with the decorative panel removed. 1... Air conditioner, 22... Electrical box, 50,5
1... Inlet/outlet pipe (refrigerant pipe), 52... Connector,
54...Insulating material, 55, 56...Inlet/outlet piping (water piping), 57...Connecting tool, 59...Terminal board (wiring connection part).

Claims (1)

[Scope of utility model registration request] In an air conditioner that has a cooler and a hot water coil, an electrical equipment box is housed inside the equipment, and a connector for the refrigerant piping of the cooler is installed on one side of the electrical equipment box, and the hot water pipe is installed on the other side of the equipment box. An air conditioner characterized in that connection fittings for water piping of the coils are respectively arranged, and connection parts for wiring connected to parts in the electrical equipment box are attached to the other side of the electrical equipment box.