JPS637780Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to the structure of a dew pan of an air conditioner and a mouth ring with a suction port installed on the air suction side of an indoor blower. A conventional air conditioner will be explained with reference to FIGS. 1 and 2. Arrows in FIG. 1 indicate air flow. 1 is a compressor, 2 is a condenser, 3 is an evaporator,
The condenser 2 is connected to an evaporator 3 by a pressure reducing device 4, and the evaporator 3 has an inlet/outlet pipe (not shown) to which the pressure reducing device 4 and a suction pipe 5, which will be described later, are connected.
on the indoor air outlet 16 side, and is connected to the compressor 1 through a suction pipe 5. Decompression device 4
A heat insulating material 6 is attached to the outer surface of the suction pipe 5 to prevent dew condensation from forming on the surface when the air conditioner is in cooling operation. Reference numeral 7 denotes a fan motor for driving the blower, and a Sirotskov fan 9 is attached to the indoor side of the fan motor, and a propeller fan 8 is attached to the outdoor side. The inside of the air conditioner is divided into an indoor side and an outdoor side by a partition plate 10. The evaporator 3 is placed on the indoor side, and a dew pan 11 is provided below the evaporator 3. There is a casing 12 around the Shirotsuko fan 9 that forms a ventilation path for the Shirotsuko fan, and a mouth ring 1 having a suction port between the dew pan 11 and the casing 12 to partition the two.
3 is provided. According to such an air conditioner, Sirotskov fan 9
The flanges 3a and 3b of the side plate of the evaporator 3 are arranged so that all the air sucked into the evaporator 3 passes through the evaporator 3.
and the mouth ring 13 are butted against each other and sealed at that part. However, due to its structure, it is difficult to insert a tool such as a screwdriver into the butt part between the flange part 3a and the mouth ring 13, so it is difficult to insert a tool such as a screwdriver. Fixation was difficult, and the sealing of the abutting portion was not always sufficient. This causes an air flow to be sucked into the Sirotskov fan 9 through the abutting portion without passing through the evaporator, which also leads to a decrease in the performance of the evaporator. Furthermore, since the inlet and outlet pipes of the evaporator 3 are located on the indoor air outlet 16 side, the center of the evaporator 3 is largely shifted to the right from the center of the suction hole of the mouth ring 13 as shown in FIG. The amount of air sucked into the vessel 3 is large on the side where the inlet/outlet pipe is located, and less on the opposite side, creating an imbalance, which has the disadvantage that heat exchange in the evaporator becomes insufficient. Furthermore, a side pipe cover 15, which serves as a guide plate to smoothly guide the air discharged from the Shirotsuko fan 9 into the room, is arranged so as to surround the inlet/outlet pipe of the evaporator 3 and the side pipe, and to be continuous with the end face of the mouth ring 13. This increases the number of parts and costs. Further, since the pressure reducing device 4, suction pipe 5, and heat insulating material 6 are located at the air outlet of the Shirotsuko fan 9, these act as ventilation resistance, causing an increase in noise and a decrease in the indoor air volume. This decrease in indoor air volume is caused by the evaporator 3
This leads to a decrease in the amount of heat exchanged, and there is a possibility that the heat exchange of the evaporator 3 becomes insufficient. Furthermore, when the air conditioner is operated for cooling when the room is humid, dew condensation tends to form on the surface of the mouth ring 13, and when the dew grows and falls, it leaks from between the dew pan 11 and the casing 12 to the base. There is a risk that dew may enter the mouth ring and drip into the room.
A large amount of insulation material is often pasted on the surface of 3, which is one of the reasons for the rise in costs. The present invention has been made to improve the above-mentioned drawbacks of conventional air conditioners. The present invention will be explained below with reference to an embodiment shown in FIGS. 3 and 4. In FIGS. 3 and 4, the same reference numerals as in the conventional example indicate the same components. The arrow in Figure 3 is
Indicates air flow. 21 is an evaporator, and a pressure reducing device 22 and a suction pipe 23 connected to the evaporator 21 are provided on the opposite side of the air discharge port 30 on the indoor side. 24 is a partition plate. The suction pipe 23 and the pressure reducing device 22 between the partition plate 24 and the evaporator 21
is located on the opposite side of the air discharge port 30, and most of the suction pipe and pressure reducing device are provided on the outdoor side. 25 is a dew pan provided below the evaporator 21 and extends from the bottom of the evaporator 21 to the partition plate 24. A casing 26 and a mouth ring 27 are installed above the dew pan 25. mouse ring 27
The end on the indoor air outlet 30 side is formed to surround the side pipe 28 of the evaporator, and the end is fixed to the side plate of the evaporator 21 with screws 29 from the front side of the main body. The side plates of the evaporator 21 are fixed to the end of the mouth ring 27 on the indoor air outlet 30 side, and the flange 21B of the side plate on the opposite side is fixed to the partition plate 24 via the end of the mouth ring 27. has been done. In the present invention, the indoor air outlet 30 side of the mouth ring 27 is extended to surround the side pipe 28 of the evaporator 21, so the side pipe cover 15 used in the conventional example shown in FIG. There is no need to provide it separately. Furthermore, since the mouth ring 27 on the indoor air outlet 30 side and the side plate of the evaporator 21 are fixed from the front of the main body with screws 29, this fixing work with a tool is easy, and the seal of the fixing part is can also be done satisfactorily. The inlet/outlet pipe of the evaporator 21 is connected to the indoor air outlet 30
Since it is provided on the opposite side of the mouth ring 27, the center of the evaporator in the left-right direction can be brought closer to the air discharge port side and closer to the center of the suction hole of the mouth ring 27. Therefore, the amount of air sucked into the evaporator 21 becomes uniform between the left and right portions, and the performance of the evaporator can be improved. Further, since the pressure reducing device 22 and the suction pipe 23 are provided on the side opposite to the indoor air outlet 30 side of the Shirotsuko fan 9, the suction pipe 23
The ventilation resistance caused by the pressure reducing device 22 can be eliminated. By eliminating this ventilation resistance, a decrease in air volume and an increase in noise caused by the ventilation resistance can be prevented, and it is possible to increase the air volume and reduce noise. According to the example, the air volume is 0.6m ³ /
It was possible to reduce noise by 2.5 dB while increasing min.

[Table] It was possible to increase the heat exchange amount of the evaporator by the amount of increase in air volume mentioned above. Furthermore, by reducing the noise described above, it was possible to reduce the noise of the air conditioner. Furthermore, since the dew pan 25 is provided in the entire lower part of the mouth ring 27, all the water droplets that condense on the mouth ring surface when the air conditioner is operated for cooling when indoor humidity is high are contained in the dew pan 25. can lead to. Therefore, it is not necessary to attach a heat insulating material to the mouth ring, and the cost can be reduced by this amount.

[Brief explanation of the drawing]

Figure 1 is a plan view of a conventional air conditioner, Figure 2 is a cross-sectional view of Figure 1, Figure 3 is a plan view of the air conditioner of the present invention, and Figure 4 is a cross-sectional view of Figure 3. be. DESCRIPTION OF SYMBOLS 1...Compressor, 2...Condenser, 3...Fan motor, 8...Propeller fan, 9...Syrotskov fan, 21...Evaporator, 22...Pressure reducing device, 2
3... Suction pipe, 24... Partition plate, 25... Dew pan, 26... Casing, 27... Mouth ring, 28... Side pipe, 29... Fixing screw.

Claims (1)

[Scope of claim for utility model registration] A partition plate that divides the inside of an air conditioner into an indoor side and an outdoor side, an evaporator located on the indoor side, and a compressor and a condenser located on the outdoor side. a suction pipe connected between the evaporator and the compressor; a pressure reducing device connected between the evaporator and the condenser; and a pressure reducing device located between the evaporator and the partition means. a fan disposed between the fan and the evaporator to circulate indoor air to the evaporator; and a mouse disposed between the fan and the evaporator and forming an air outlet for indoor air discharged from the fan between the partition plate and the fan. a ring, the connection position of the evaporator, the suction pipe and the pressure reducing device is located on the opposite side of the air discharge port, and most of the suction pipe and the pressure reducing device are provided outside the room. Characteristic air conditioner.