JPH03211328A - Air-conditioner - Google Patents

Abstract

PURPOSE:To prevent moisture condensation from generating even when room air to be air-conditioned with a temperature difference comes into contact with the front end part of a drain pan by a method wherein on the lower surface of an insulating material, a protrusion is integrally provided, and the protrusion is projected to the blow-out side of air stream by penetrating the insulating material support surface of the drain pan. CONSTITUTION:In an internal passage which connects an air suction port 2 and air blow-out port 3, a fan 4 is arranged, and a heat exchanger is arranged at a position which is adjacent to the air suction port 2 in this box body. Under this heat exchanger 5, a drain pan is arranged to receive drain water which is formed at the heat exchanger 5, and at the same time, an upper surface part for the air suction port is formed, and an insulating material 12A is provided in the the branch point for the blow-out region of the air stream and room air to be air-conditioned, which is on the upper surface of the front end part of this drain pan 6. On the lower surface of this insulating material 12A, a protrusion 15 is integrally provided, and the protrusion 15 is projected to the air blow-out port side by penetrating the insulating material support surface of the drain pan 6. By this method, even when outside air having a temperature difference comes into contact with the front end part of the drain pan, moisture condensation does not generate.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to an air conditioner equipped with a drain pan that receives drain water and forms an upper surface of an air outlet, and particularly relates to an air conditioner equipped with a drain pan that receives drain water and forms an upper surface of an air outlet. Regarding the dew formation prevention structure.

(Prior Art) FIG. 1 shows an indoor unit of a commonly used air conditioner.

In the figure, reference numeral 1 denotes a housing, in which an air suction port 2 is provided at the upper part of the front surface, and an air outlet 3, which will be described later, is provided at the lower part of the front surface. A blower 4 is disposed in an internal passage connecting the air inlet 2 and the air outlet 3, and as the blower 4 is driven, air from the air-conditioned room is transferred from the air inlet 2 to the passage inside the housing 1. The air is guided along the air outlet 3 and blown out again into the air-conditioned room. In addition, a heat exchanger 5 is arranged at a position adjacent to the air suction port 2 inside the housing 1, and the heat exchanger 5 is connected to the refrigeration cycle components arranged in an outdoor unit (not shown here) through refrigerant pipes. communicate to form a cycle. This heat exchanger 5
A drain pan 6 is disposed below the refrigeration cycle to receive drain water generated by the heat exchanger 5 during operation of the refrigeration cycle. Note that 7 is a filter that is detachably attached along the air suction port 2 and filters the air flow before being led to the heat exchanger 5.

To further explain the air outlet 3, it is conventionally designed as shown in FIG. The drain pan 6 has a back end inclined diagonally upward, and a plurality of support pieces 8, 8 on the top surface to support the heat exchanger 5, which has a modified polygonal cutout at its lower end. It is installed in one piece. The drain pan 6 is obliquely inclined as a whole so that its front end faces downward, and forms the air outlet 3 together with a guide piece 9 provided inside the housing 1.

That is, from that position, the drain pan 6 forms the upper surface of the air outlet 3. On the front side of the drain pan 6, a front receiver that receives drain water is integrally provided with a protruding piece 11 that protrudes further forward from a piece 10 to reliably set the direction of the blown air flow. This protruding piece 11 and the front side receiver have a heat insulating material 12 in the approximately triangular part formed by the piece 10.
is attached, and its front side is covered with a cover 13. That is, the approximately triangular portion formed by the protruding piece 11 and the front support piece 10 is near the branching point between the air flow area blown out from the air outlet 3 and the air in the conditioned room, and When the air flow is cold air, there is naturally a temperature difference between the cold air blowing area and the air in the conditioned room. Therefore, in the vicinity of these branching points, the approximately triangular portion formed by the protruding piece 11 and the front support piece 10 will be cooled by cold air;
Dew condensation occurs when the air in the conditioned room, which has a difference in temperature, comes into contact with each other.

- If dew gets on it, it will naturally drip and wet the floor of the air-conditioned room. Therefore, insulating material 12 is placed in the approximately triangular part.
Install this to prevent contact between the air in the conditioned room, which has a temperature difference, and prevent dew formation. A cover to cover this is used as necessary.

In this way, the indoor unit of the air conditioner is configured. Refrigeration cycle> (At the start, a refrigerant is introduced into the heat exchanger 5, and the blower 4 is driven to introduce air into the casing 1 from the air suction port 2 and exchange heat with the heat exchanger 5. This air flow is changed into cold air and is again blown out from the air outlet 3 into the air-conditioned room, thereby achieving air conditioning in the air-conditioned room.

(Problems to be Solved by the Invention) Initially, the heat insulating material 12 used was a flocked sheet, which was attached to the 6 sides of the drain pan. However, the above-mentioned flocked sheet is expensive and has a negative impact on the cost, and since the projecting piece 11 and the front support of the drain pan 6 are attached only to the surface of the piece 10, there are drawbacks such as a low heat insulating effect.

Therefore, instead of the flocked sheet, for example, Styrofoam material has been filled into the approximately triangular portion. The above-mentioned foamed polystyrene material is cheaper than a flocked sheet, and since it is filled in a substantially triangular portion, the cross-sectional area becomes large and the heat insulation efficiency is improved.

However, in order to attach the heat insulating material 12 made of the Styrofoam material to the drain pan 6, an adhesive is applied to at least one of them to make them stick together. Since the approximately triangular part to be filled is extremely deformed, we used a separate piece of holding metal fittings to prevent the insulation material from shifting.
2 and the drain pan 6 must be held in close contact with each other for a certain period of time.

Therefore, it is time-consuming and troublesome to make the insulation material 12 from polystyrene foam and attach it to the drain pan 6.
Since it is necessary to make a separate piece of holding metal fittings, it will still have a negative impact on cost.

Furthermore, by filling the approximately triangular portion with the heat insulating material 12, dew does not form on the upper surface side of the protruding piece 11 of the drain pan 6, but as shown by the broken line arrow in the figure, the protruding piece at the front end Since the air in the conditioned room having a temperature difference comes into contact with the end portion 11a, and the cold air blown out along the air outlet 3 also comes into contact with the end portion 11a, dew formation is likely to occur. The protruding end 11a of the protruding piece 11 forms the appearance of the housing 1, and it is unavoidable that the air in the conditioned room with a temperature difference comes into contact with the protruding end 11a of the protruding piece 11. Because of these factors, condensation may form on the protruding end 11a of the drain pan 6 and drip, or the blown air flow may It is not possible to prevent the problem of contamination with dew.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to facilitate the work of attaching a heat insulating material to a drain pan, and to provide an air-conditioned room with a temperature difference at the front end of the drain pan. The purpose of the present invention is to provide an air conditioner that prevents condensation by preventing air flow blown from an air outlet from coming into contact with the air.

[Structure of the Invention] (Means for Solving Problems) The present invention provides an air inlet at the upper front of the casing, an air outlet at the lower front, and a structure in which the air inlet and the air outlet are connected to each other. A blower is placed in the internal passage that connects the air, a heat exchanger is placed in the housing adjacent to the air suction port, and a drain pan is placed below the heat exchanger to drain the condensate generated by the heat exchanger. A heat insulating material is placed near the branch point between the air flow blowing area and the air in the conditioned room, which is the top surface of the front end of this drain pan, to receive water and form the upper surface of the air outlet. This air conditioner is characterized in that a protrusion integrally provided on the lower surface penetrates the heat insulating support surface of the drain pan and protrudes toward the air outlet side.

(Function) The protrusion integrally provided on the lower surface of the heat insulating material receives the air flow blown out along the air outlet in front of the front end of the drain pan, and this air flow contacts the front end of the drain pan. to prevent Therefore, even if the front end of the drain pan comes into contact with outside air having a different temperature, only dew will form. Furthermore, when installing the above-mentioned heat insulating material, the protruding portion passes through the insulating material support surface of the drain pan and inevitably positions it, so that it can be reliably installed in the correct position without the need for any special positioning fittings. can be set.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

The schematic configuration of the indoor unit of the air conditioner is as described above with reference to FIG. 1, so a new explanation will be omitted with reference to FIG.

Particularly in the air outlet part of the above indoor unit, the second
It is configured as shown in the figure. That is, the drain pan 6 shown in the figure has a different cross-sectional shape from the conventional one, but
Even if the cross-sectional shape is basically the same, there is no problem. Therefore, the heat exchanger 5 is arranged obliquely as a whole and forms the upper surface part of the air outlet 3 together with the guide piece provided in the housing 1, and the lower end part is cut out in a deformed polygonal shape. A plurality of supporting pieces 8, 8 are integrally protruded, and a protruding piece 11 is integrally protruded from a piece 10 of the front support provided on the front side of the supporting pieces 8, 8, to reliably set the direction of the blown air flow. What it does is the same as the conventional one.

A new heat insulating material 12A with a protrusion 15 is attached to the approximately triangular portion formed by the protrusion piece 11 and the front support piece 10, and if necessary, the front side thereof is covered with a cover (not shown). covered. The heat insulating material 12A is made of, for example, a foamed polystyrene material and has a substantially triangular cross section, and the substantially triangular portion formed by the protruding piece 11 of the drain pan 6 and the front support piece 10 is filled. The protrusion 15 is a heat insulating material 12A.
It protrudes integrally from the lower surface of the drain pan 6, and protrudes toward the air outlet 3 side through an elongated attachment hole 16 provided in a protrusion piece 11 that is a support surface for the heat insulating material of the drain pan 6. Above protrusion 1
A sufficient length of the protrusion from the protruding piece 11 of No. 5 must be ensured. That is, the airflow blown out along the air outlet 3 is received in front of the protruding end 11a of the protruding piece 11, which is the front end of the drain pan 6, and the airflow comes into contact with the protruding end 11a of the drain pan. It must be long enough to prevent

As shown in FIG. 4, the drain pan 6 has a protruding piece 1
The long hole 16 for attachment is provided at a predetermined portion of 1 over substantially the entire widthwise direction. Therefore, the heat conduction from the base end of the drain pan 6 to the protruding end 11a is controlled by the long mounting hole 16.
will be prevented. Further, the front side support of the drain pan 6 has a pair of ribs 17, 1 at a predetermined interval on one side.
7 are provided integrally. These ribs 17, 17 are formed into a substantially triangular shape, and the vertical side 17a thereof is provided integrally with the piece 10 on the front side, and the bottom side 1117b is spaced apart from the protruding piece 11. As shown again in FIG. 2, when the drain pan 6 is attached to a predetermined position, the bottom side 17b of the rib 17 runs substantially horizontally, and the oblique side 17c of the rib runs vertically. With the insulation material 12A attached to the drain pan 6, the rib 17
The oblique side portion 17c is dimensioned so as to protrude further forward than the heat insulating material 12A.

To actually install the above heat insulating material 12A,
Alternatively, adhesive may be applied to at least one of the drain pans 6 to attach them to each other. At this time, since the protrusion 15 of the heat insulating material 12A is inserted into the elongated mounting hole 16 provided in the protruding piece 11, the heat insulating material 12A does not shift even during the pasting operation, and is always correctly positioned.

Thus, the blower 4 is driven together with the refrigeration cycle operation to blow out the cold air that has undergone heat exchange with the heat exchanger 5 from the air outlet 3 to the air-conditioned room, as in the conventional case. The approximately triangular portion formed by the projecting piece 11 of the drain pan 6 and the front support piece 1O is near the branching point between the air flow area blown out from the air outlet 3 and the air in the conditioned room. Although there is a temperature difference, since the approximately triangular portion formed by the protruding piece 11 and the front support piece 10 is filled with the heat insulating material 12A, condensation does not occur.

Furthermore, the cold air blown out from the air outlet 3 flows along the lower surface of the drain pan 6, collides with the protrusion 15 projecting here, and then is blown out into the air-conditioned room. Since the protrusion length of the protrusion 15 is sufficient, the cold air collides with the protrusion 15 before the protrusion end 11a of the protrusion piece 11, which is the front end of the drain water 6, and forcibly changes the flow direction. It will be done. Therefore, the cold air blown out does not come into contact with the protruding end 11a, and even if the air in the conditioned room with a temperature difference comes into contact with the protruding end 11a, as shown by the broken line arrow in the figure, the protruding end 11a
There is no dew on a. Furthermore, as explained earlier, the long mounting hole 16 provided in the protruding piece 11 prevents heat conduction from the base end of the drain pan 6 to the protruding piece 11, so that the protruding end 11a is cooled by cold air. There's nothing wrong with that.

By the way, along with such an air conditioning effect, dust from inside the air-conditioned room adheres to the filter 7, and the filter 7 becomes clogged if left as it is. Therefore, after removing the filter 7 at appropriate intervals and removing the attached dust,
It must be installed again in a position along the original air intake port 2. At this time, as shown in FIG. 3, the filter 7 comes into contact with the oblique side 17c of the rib 17 integrally provided in the drain pan 6 in order from the upper end to the lower end. Above rib 17
The edge of the oblique side portion 17c protrudes from the front surface of the heat insulating material 12A, and serves as a guide when replacing the filter 7. Therefore, filter replacement becomes extremely smooth, and
At this time, the heat insulating material 12A is not scraped by the filter 7, and the heat insulating material 12A is also protected.

[Effects of the Invention] As explained above, according to the present invention, a protrusion is integrally provided on the lower surface of the heat insulating material so as to penetrate the heat insulating material support surface of the drain pan and protrude toward the airflow outlet side. Therefore, the protrusion receives the airflow blown out from the air outlet and prevents it from coming into contact with the front end of the drain pan. Therefore, even if the air in the conditioned room with a temperature difference comes into contact with the front end of the drain pan, no dew condensation occurs there.

In addition, when attaching the heat insulating material to the drain pan, the protrusion functions to position the insulating material, allowing the heat insulating material to be accurately and easily installed in the specified position without shifting, improving work efficiency. It has the following effects.

[Brief explanation of drawings]

Fig. 1 is a schematic longitudinal sectional view of an indoor unit of an air conditioner, Fig. 2 is an enlarged longitudinal sectional view of the main parts of the indoor unit showing one embodiment of the present invention, and Fig. 3 is different from Fig. 2. FIG. 4 is a perspective view of a drain pan, and FIG. 5 is an enlarged vertical cross-sectional view of a main part of an indoor unit of an air conditioner according to a conventional example of the present invention. 2...Air suction port, 3...Air outlet, 4...Blower, 1...Casing, 5...Heat exchanger, 6...Drain pan, 12A...Insulation material, 15 ···protrusion.

Claims (1)

[Claims] A housing with an air inlet at the upper front and an air outlet at the lower front, a blower placed in an internal passage connecting these air inlets and the air outlet, and a position adjacent to the air inlet within the housing. a drain pan that is placed below the heat exchanger and receives drain water generated by the heat exchanger and forms the upper surface of the air outlet; and an upper surface of the front end of the drain pan. A heat insulating material is installed near the branch point between the air flow blowing area and the air in the conditioned room, and a heat insulating material is integrally provided on the lower surface of the heat insulating material and penetrates through the support surface of the heat insulating material of the drain pan. 1. An air conditioner comprising: a protrusion that prevents the airflow projected toward the outlet side from contacting the front end of the drain pan.