JPH0730926B2 - Air conditioner - Google Patents

Description

TECHNICAL FIELD The present invention relates to high performance and miniaturization of an air conditioner.

2. Description of the Related Art An indoor unit of a conventional separate type air conditioner has a heat exchanger, a fan, a water pan,
It consists of a blow-out grill, underframe, front grill, filter, etc. In order to improve the performance of the heat exchanger within the limited thickness of the indoor unit, the heat transfer tubes were arranged in two rows and in multiple stages.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, if the performance is further improved from the conventional air conditioner, the thickness of the indoor unit is increased or the height dimension is increased. Also, there is no space to install an air purifier etc. as an additional function.

Therefore, it is an object of the present invention to improve the performance of the heat exchanger within the outer dimensions of the conventional indoor unit, and to enable attachment of an air purifier as an additional function. Alternatively, if the performance is the same, it is intended to downsize the indoor unit.

Means for Solving the Problems In order to solve the above problems, the present invention provides a heat exchanger incorporated in an indoor unit, wherein a notch is provided at a fin end portion at a predetermined position in the longitudinal direction of the fin, and an upper heat exchange is performed. The upper end of the fan is provided with a heat exchanger composed of integral fins connected at the center so that the heat exchanger and the lower heat exchanger have a predetermined angle, and the lower end of the fan is lower than the lower end position of the heat exchanger. The configuration is such that the positions are almost the same or above.

Further, the present invention, considering the water treatment during cooling operation, the fin notch shape of the heat exchanger is a notch inside the bending angle, the notch distance of the upper heat exchanger is L1, the lower heat exchanger. When the notch distance of L2 is L2, the fins are shaped so that L1 <L2.

Further, according to the present invention, an air purifier or the like is provided on the windward side of the ventilation circuit of the bent upper heat exchanger.

Action The action of the above means is as follows.

The present invention has a configuration in which the lower end position of the impeller is approximately the same as or higher than the lower end position of the heat exchanger, and the heat exchanger is bent so that the distance from the impeller outlet to the main body outlet is increased. As a result, the effect of the diffuser is increased, the flow rate performance is improved, and even in that case, the number of heat transfer tube stages of the heat exchanger can be increased within the conventional external dimensions, and the performance can be improved.

Further, according to the present invention, the water can be treated in the water receiving tray without dropping water from the lower end of the upper heat exchanger during the cooling operation in the bent heat exchanger.

Further, according to the present invention, the air purifier can be incorporated within the same external dimensions as the conventional one.

Further, according to the present invention, an air purifier or the like can be attached and detached.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

First, a first embodiment of the present invention will be described with reference to FIG. The figure is a side sectional view of the indoor unit.

In the figure, 1 is a heat exchanger, 2 is a fan, 3 is a water pan,
Reference numeral 4 is an outlet grille, 5 is an underframe, 6 is a front grille, 7 is a filter, and 8 is a vertical wind direction changing blade. Here, the heat exchanger 1 is provided on the upstream side of the fan 2 so that the lower end position of the fan 2 is substantially the same as or higher than the lower end position of the heat exchanger 1, and the upper heat exchanger 1a and the lower heat exchanger 1a The heat exchanger 1b is bent to form an angle at a predetermined position in the longitudinal direction of the fin 1c, and the fin 1c connects the upper heat exchanger 1a and the lower heat exchanger 1b. Further, the heat transfer tube 1d has two stages and 14 stages. Here, if the height dimension H of the indoor unit, the thickness dimension D, and the minimum distance y between the fan 2 and the heat exchanger 1 are set, then when the conventional heat exchanger is assembled without changing H, D, y,
Only 3 stages can be installed. (Step pitch P of heat transfer tube 1d, fan 2
The outer diameter d and the size of the water tray 3 are the same, for example H = 360m
m, D = 150mm, y = 6mm, p = 21mm, d = 86mm. ) Therefore, a larger heat exchanger 1 (14 rows in 2 rows) can be installed with the external dimensions of the conventional indoor unit, and the suction area is also large, so that a larger air volume can be obtained for the same noise value. Can exchange heat with. Therefore, the performance can be significantly improved.

Next, a second embodiment of the present invention will be described with reference to FIGS.

Here, the same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 2 is a side sectional view of the indoor unit.

FIG. 3 is an enlarged view of the bent portion of the heat exchanger 1.

From this figure, when the cutout length of the upper heat exchanger 1a is L1 and the cutout length of the lower heat exchanger 1b is L2, L1 <L2,
In the folded state, the lower end of the upper heat exchanger 1a is inside the fins 1c of the lower heat exchanger 1b.

According to the above configuration, during cooling operation, good water treatment can be performed without dropping water droplets from the lower end of the upper heat exchanger 1a to portions other than the water receiving tray or jumping to the fan.

Next, a third embodiment of the present invention will be described with reference to FIG.

Here, the same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 4, 9 is an air purifier. External dimensions H, D
A healthy air conditioner can be realized by installing an air purifier without changing the above.

In addition, with the above-described configuration, it is possible to have a rounded or chamfered upper portion in appearance, and a vertically symmetrical design is also possible. In addition, by opening the upper part of the front grill and bending the filter so as to match the opening, it is possible to exchange heat with a larger amount of air for the same noise value, and the performance can be greatly improved.

EFFECTS OF THE INVENTION As is clear from the above description, the present invention has a configuration in which the heat exchanger is bent in a configuration in which the impeller lower end position is substantially the same as or above the lower end position of the heat exchanger. As a result, the distance from the impeller outlet to the main body outlet is increased, the effect of the diffuser is increased, the flow rate performance is improved, and even in that case, a large heat exchanger can be incorporated without changing the external dimensions from the conventional one, The performance can be greatly improved. Further, since the fins are the same as the upper heat exchanger and the lower heat exchanger, they can be processed at once in manufacturing the heat exchanger.

Further, since the lower ends of the fins of the upper heat exchanger are put inside the fins of the lower heat exchanger, water treatment during the cooling operation can be reliably performed.

Further, an air purifier or the like can be incorporated in the space generated by bending, and the air purifying function can be provided with the conventional external dimensions.

Further, since the lower ends of the fins of the upper heat exchanger are put inside the fins of the lower heat exchanger, water treatment during the cooling operation can be reliably performed. Also, by opening the upper part of the front grille, it is possible to exchange heat with a larger amount of air for the same noise value, and the performance can be greatly improved. Further, in terms of design, it is possible to make the side shapes of the indoor units upside down, and there are various effects.

[Brief description of drawings]

1 is a side sectional view of an indoor unit showing a first embodiment of the invention, FIG. 2 is a side sectional view of an indoor unit showing a second embodiment of the present invention, FIG. 3 is an enlarged view of a bent portion, and FIG. FIG. 5 is a side sectional view of an indoor unit showing a third embodiment of the present invention, and FIG. 5 is a side sectional view of an indoor unit showing a conventional example. 1 ... Heat exchanger, 1a ... Upper heat exchanger, 1b ... Lower heat exchanger, 1c ... Fin, 1d ... Heat transfer tube, 9 ... Air purifier, 10 ... Air purifier mounting frame.

Claims (3)

[Claims] 1. A fin, which is arranged in parallel at a constant interval, has a fin between which an air flow flows and a heat transfer tube which is inserted at a right angle to the fin and through which a refrigerant flows, and which is located at a predetermined position in the longitudinal direction of the fin. A fin is provided with a notch at the end, and the upper heat exchanger above the notch and the lower heat exchanger below the notch are integrated fins connected at the center so that they have a predetermined angle. An air conditioner in which the above heat exchanger is provided on the upstream side of the fan, and the lower end position of the fan is substantially the same as or higher than the lower end position of the heat exchanger. 2. In the notch at the end of the fin, the shape of the notch is such that the corner of the fin of the upper heat exchanger is located inside the fin of the lower heat exchanger, and the notch is formed in the notch of the inner part of the bending angle. The air conditioner according to claim 1, wherein when the cutout distance of the heat exchanger is L1 and the cutout distance of the lower heat exchanger is L2, the fins have a cutout shape such that L1 <L2. 3. The air conditioner according to claim 1, wherein a filter having an air cleaning function is provided on the windward side of the ventilation circuit of the bent upper heat exchanger.