JP2004293977A - Indoor unit for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit for a relatively large air conditioner for all rooms and whole building capable of enhancing heat exchange efficiency by optimizing the casing inner structure of the indoor unit and improving the work efficiency of assembly work and maintenance work by raising the degree of design freedom with a simplified structure. <P>SOLUTION: An indoor air blower 2 is provided at a highest part in a casing 1, an indoor heat exchanger 3 is provided at a lower part of the indoor air blower and a moistening element 6 is provided parallel to the indoor heat exchanger. An overall heat exchanger 4 and an exhaustion air blower 5 are provided at a lowest part in the casing and a suction part 12 for guiding and sucking indoor air at a lowest part side face of the casing and a blow-out part 20 for guiding and blowing out air which is heat-exchanged by the indoor heat exchanger at a highest part in the casing. An outside air intake port 11b and an outside air leading-out port 11a are provided at a casing part for facing toward the overall heat exchanger and the exhaustion air blower. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to, for example, an indoor unit of an air conditioner that is used for general households and performs air conditioning over all rooms of a house, and more particularly to an improvement in an arrangement structure of components housed in a housing. .
[0002]
[Prior art]
A commonly used air conditioner is a so-called room air conditioner for one room. In addition, there is an air conditioner called a multi-air conditioner, which enables two or three rooms to air-condition. In order to achieve air conditioning for a larger number of rooms, it is not possible to use an ordinary type of room air conditioner due to the structure of the outdoor unit.
[0003]
On the other hand, an air conditioner of the highest model, which is used for a general house but which performs air conditioning for all rooms in the whole building, is prepared. For example, Patent Literature 1 discloses details as a prior art in this type of air conditioner.
[0004]
In this case, a cooling / heating coil (hereinafter, referred to as an indoor heat exchanger) is disposed at a substantially central portion in a main body casing (hereinafter, referred to as a housing), and a total heat exchanger is disposed below the coil.
[0005]
A heat source unit that sends a heat medium to the indoor heat exchanger is disposed below the total heat exchanger and at the bottom of the housing. A circulating blower is disposed above the indoor heat exchanger, and a plurality of mouths are provided on the upper surface of the housing above the circulating blower.
[0006]
Two ducts for derivation and introduction are connected to one of the mouths, and these ducts penetrate the outer wall of the house and open to the outside. The other mouth is connected to a duct which is arranged behind the ceiling of the room and has an open end facing the room from the ceiling of the room. These ducts are also for introduction and derivation, and are provided with ducts that are multiples of the number of rooms.
[0007]
[Patent Document 1]
Japanese Utility Model Publication No. 7-1437
[Problems to be solved by the invention]
By the way, this air conditioner is equipped with a circulation blower almost at the top of the housing, sucks indoor air into the housing, guides it to the indoor heat exchanger on the lower side, and heat-exchanges it. Air is blown to each room via a duct connected to the unit.
[0009]
Furthermore, the circulation blower guides the outside air to the total heat exchanger below the indoor heat exchanger, and after the heat exchange, discharges the outside to the outside or a part of the room air introduced into the housing. After conducting heat exchange to the total heat exchanger, and then to the above-mentioned duct.
[0010]
As described above, since the circulation blower must secure a sufficient amount of blown air, it is necessary to prepare a large-sized blower, which has an adverse effect on cost and running cost, increases the occupied space, and increases the housing size. There are problems such as an increase in body size.
[0011]
In addition, the mouths connected to each duct are all at the top of the housing, there is a circulation blower at the lower part, there is an indoor heat exchanger at the lower part, and there is total heat exchange at the lower part. The vessel is placed.
[0012]
Therefore, it is not only difficult for the circulation air blower to guide the indoor air or the external air sucked into the housing to the indoor heat exchanger, but also for the total heat exchanger on the lower side to be more difficult to conduct. Efficiency is inevitable.
[0013]
In the prior art, a guide mechanism is provided in the housing so as to smoothly guide the heat exchange air from each duct and mouth to the indoor heat exchanger and the total heat exchanger. Therefore, there is almost no empty space in the housing, which is extremely difficult in design. The internal structure is complicated, affecting assembly and maintenance work.
[0014]
The present invention has been made in view of the above circumstances, and a purpose thereof is to provide a relatively large air conditioner for all rooms in the whole building, and to optimize the internal configuration of the indoor unit housing. The purpose of the present invention is to provide an indoor unit of an air conditioner that can improve the heat exchange efficiency by improving the design flexibility by simplifying the structure and improve the work efficiency in the assembly work and the maintenance work.
[0015]
[Means for Solving the Problems]
In order to solve the above problems and achieve the object, the present invention provides an indoor unit of an air conditioner that houses an indoor heat exchanger, an indoor blower, a total heat exchanger, an exhaust blower, a humidifying element, and the like in a housing. , An indoor blower is arranged at the top of the housing, the indoor heat exchanger is arranged at the bottom of the indoor blower, and a humidifying element is arranged in parallel with the indoor heat exchanger. An air conditioner and a blower for exhaust are arranged, and a suction unit that sucks and guides indoor air at the bottom side of the housing and a blowout unit that blows and guides air that has been heat-exchanged by the indoor heat exchanger is provided at the top of the housing. In addition, an external air inlet and an external air outlet are provided in a housing portion facing the total heat exchanger and the exhaust blower.
[0016]
By adopting the means to solve such problems, the internal configuration of the housing can be optimized to improve the heat exchange efficiency, and at the same time, the degree of freedom in design can be increased by simplifying the structure, and the assembly work and maintenance work can be performed. Work efficiency can be improved.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
1A and 1B are schematic cross-sectional views of an indoor unit of an air conditioner, wherein FIG. 1A is a cross-sectional view of a side portion, and FIG. 1B is a cross-sectional view of a front portion. FIG. 2 is a schematic configuration diagram in a state where an indoor unit of the air conditioner is installed in a house. FIG. 3 is a schematic perspective view of an air conditioner integrally showing an indoor unit and an outdoor unit.
[0018]
As shown in FIGS. 1A and 1B, reference numeral 1 denotes an indoor unit main body (hereinafter, referred to as a housing) of an air conditioner. The housing 1 is formed of a metal thin plate in the shape of a box, and has a relatively small height, for example, about 1530 mm, a width, for example, about 1650 mm, and a depth, for example, about 400 mm.
[0019]
Inside the housing 1, an indoor blower 2, an indoor heat exchanger 3, a total heat exchanger 4, an exhaust blower 5, a humidifying element 6 and an electric precipitator 7 are provided as described below. Housed within.
[0020]
The indoor blower 2 is arranged at the uppermost part in the housing 1. The indoor blower 2 is a two-axis motor having a fan motor M at the center and a rotating shaft protruding from both sides of the fan motor M. A so-called sirocco fan F is attached to each rotating shaft, and in accordance with the rotation, air is sucked in from the axial direction and blown out in the circumferential direction.
[0021]
The entire peripheral surface of each fan F is surrounded by a casing K. The casing K has an outlet 1a communicating with an opening opening on the upper surface of the housing 1 and openings on both side surfaces. A certain gap is secured between the side surface of the casing K and the inner wall of the housing 1 so that heat exchange air can freely flow from between them.
[0022]
The indoor heat exchanger 3 is disposed below the indoor blower 2 and substantially at the center of the housing 1. The width of the indoor heat exchanger 3 is formed to be as similar as possible to the width of the housing 1.
[0023]
The height of the indoor heat exchanger 3 is about half of the height of the housing 1 and, particularly, as shown in FIG. Both the inclined upper end portion and the inclined rear end portion of the indoor heat exchanger 3 have a slight gap with respect to one surface portion and the other surface portion of the inner wall of the housing 1.
[0024]
For this reason, the heat exchange air guided inside the housing 1 as described later always flows through the indoor heat exchanger 2 to exchange heat. The humidifying element 6 and the electric precipitator 7 are arranged side by side and in parallel with the indoor heat exchanger 3 at an inclination angle similar to that of the indoor heat exchanger 3.
[0025]
The humidifying element 6 is on the lower side and the electric precipitator 7 is on this upper side and is arranged in a straight line with each other. At the lower end of the indoor heat exchanger 3, a drain plate 8 for receiving drain water generated in the indoor heat exchanger 3 is provided.
[0026]
The drain plate 8 is originally designed to have a required area and to some extent enlarged so as to face not only the indoor heat exchanger 3 but also the lower end of the humidifying element 6. Therefore, if there is any dew flowing down along the humidifying element 6, all of the dew is received by the drain plate 8.
[0027]
Although not shown, a mechanism for supplying moisture (for example, city water) is disposed opposite to the humidifying element 6 so that the humidifying element 6 can be supplied with water as needed, and can always be kept wet. Therefore, it is natural that dew drops from the humidifying element 6 and cannot be ignored.
[0028]
The electric precipitator 7 may be composed of a combination of a normal discharge electrode and a precipitating electrode, and may further include, for example, an electrode that generates negative ions. A control unit 10 for controlling electric components such as the indoor blower 2 is disposed directly below the drain plate 8.
[0029]
At the lowermost part of the housing 1, a total heat exchanger 4 and an exhaust blower 5 are arranged as described later. Guide plates 10A and 10B are provided laterally and vertically with the total heat exchanger 4 as a center.
[0030]
The guide plate 10A on the side has a two-part configuration including a part that partitions from one surface of the casing 1 to the total heat exchanger 4 and a part that partitions from the other part of the casing 1 to the total heat exchanger 4. The upper guide plate 10B is temporarily extended upward from the total heat exchanger 4, and is bent obliquely and then horizontally.
[0031]
The upper guide plate 10B that is bent in the horizontal direction extends along the lower surface of the control unit 10 and has an edge connected to one surface of the housing 1. The lower guide plate 10B is connected to the bottom of the housing 1 as it is.
[0032]
The exhaust blower 5 has a total heat exchanger 4, a guide plate 10 </ b> A extending from one side of the total heat exchanger 4 to one surface of the housing 1, and is bent in a horizontal direction from the upper part of the total heat exchanger 4. It is arranged in a space surrounded by the guide plate 10B.
[0033]
The suction portion of the exhaust blower 5 faces the total heat exchanger 4, and the blowout portion faces one surface of the housing 1 between the guide plates 10A and 10B. An external air outlet 11a is opened on one surface of the housing 1 to which the outlet of the exhaust blower 5 faces.
[0034]
An external air inlet 11b is opened at a lower portion side by side with the external air outlet 11a. The guide plate 10A which comes out of the side of the total heat exchanger 4 and abuts on one surface of the housing 1 is bounded between the external air outlet 11a and the external air inlet 11b.
[0035]
On the other hand, a suction part 12 is provided at the lowermost part of the other surface of the housing 1. This suction portion 12 is provided with a first suction port 12a (a first suction port 12a) provided vertically adjacent to an end edge of a guide plate 10A extending from the side of the total heat exchanger 4 to the other surface of the housing 1. (Upper side) and the second suction port 12b (lower side).
[0036]
A filter 13 is removably fitted over a first suction port 12a and a second suction port 12b constituting the suction section 12. That is, the filter 13 is formed so as to integrally cover the first suction port 12a and the second suction port 12b.
[0037]
The total heat exchanger 4 has two channels a and b in two directions perpendicular to each other. Since the material itself is made of a material having an extremely high heat exchange efficiency, the air guided along the two orthogonal flow paths a and b efficiently exchange heat with each other.
[0038]
The total heat exchanger 4 has a rectangular cross section. Here, a pair of corners are oriented in the up-down direction, and the other pair of corners are arranged obliquely so as to face a substantially horizontal direction. For this reason, the two flow paths a and b formed in the total heat exchanger 4 are directed obliquely to each other.
[0039]
One end of the flow path a is directed to the external air inlet 11b, and the other end is directed to the inside of the housing 1 such as the first suction port 12a, the humidifying element 6, and the indoor heat exchanger 3. One end of the other flow path b is directed to the second suction port 12b, and the other end is directed to the external air outlet 11a via the exhaust blower 5.
[0040]
In particular, the auxiliary filter 14 is detachably fitted to the end facing the external air inlet 11b. Since the filter 13 is fitted into the second suction port 12b, the filters 14 and 13 are attached to both suction sides of the two flow paths a and b of the total heat exchanger 4.
[0041]
In the indoor unit S of the air conditioner thus configured, as shown in FIG. 2, a duct 20 for deriving heat exchange air is provided on the upper surface of the housing 1 and penetrates the outer wall of the house Y. And it is extended to the interior of the house.
[0042]
This end is branched into a plurality of ducts 21a and 21b. One branch duct 21a is provided along the ceiling of the first floor room 1R, and is exposed from the ceiling of each room 1R. The other branch duct 21b is arranged along the back of the ceiling of the second floor room 2R, and is exposed from the ceiling of each room 2R.
[0043]
That is, the heat exchange air outlet 22 is provided on the ceiling of all the rooms 1R and 2R of the house Y. On the other hand, a suction port 23 for guiding out and guiding the air after heat exchange is provided in a lower portion of each of the rooms 1R and 2R.
[0044]
In particular, the air guided through the inlet 23 of each room 2R on the second floor is collected in one place, and further guided to a predetermined room 1R or an empty space on the first floor. The air led to each room 1R on the first floor and the air led from the second floor are all led to the suction port 24 projecting from the lower surface of the indoor unit S.
[0045]
The suction opening 24 protrudes along the periphery of the suction portion 12 described above with reference to FIG. Therefore, the room air guided to the suction port body 24 is separately guided to the first suction port 12a and the second suction port 12b as described above.
[0046]
In particular, as shown in FIG. 3, the outdoor unit H is disposed adjacent to the indoor unit S described above. That is, the air conditioners including the indoor unit S and the outdoor unit H are collectively arranged outside the house.
[0047]
Thus, when the operation switch is turned on, the refrigeration cycle operation starts, and the indoor blower 2 and the exhaust blower 5 start driving. The air guided from each of the rooms 1R and 2R is introduced into the housing 1 of the indoor unit S via the suction unit 12. At this time, dust passes through the filter 13 and is captured.
[0048]
The air that has passed through the first suction port 12 a flows through the indoor heat exchanger 3 via the humidifying element 6 and the electric dust collector 7. Humidification is performed by the humidifying element 6, finer dust is captured by the electric precipitator 7, and heat is exchanged by the indoor heat exchanger 3 to change into warm air or cold air.
[0049]
Then, it is sucked into the indoor blower 2 and guided from the duct 20 along the branch ducts 21a and 21b, and is blown out to the rooms 1R and 2R on the first and second floors. In each of the rooms 1R and 2R, warm air or cold air to which clean and appropriate moisture is added is supplied, and an ideal air conditioning operation is performed.
The air after the heat exchange is sucked into the housing 1 of the indoor unit S again from each of the rooms 1R and 2R via the suction port 24, and circulates in the above-described cycle.
[0050]
On the other hand, the indoor air introduced into the housing 1 through the second suction port 12b by the operation of the exhaust blower 5 is guided along the flow path b of the total heat exchanger 4. Then, the air is discharged from the external air outlet 11a to the outside via the exhaust blower 5.
[0051]
Further, external air is introduced into the housing 1 from the external air inlet 11b by the function of the indoor blower 2. The external air is guided through the external air filter 14 along the flow path a of the total heat exchanger 4.
[0052]
In the total heat exchanger 4, indoor air guided through the flow path b and external air guided through the flow path a exchange heat. The room air is discharged to the outside, and the outside air is taken into the housing 1 and joins the room air guided to the humidifying element 6 and the like.
[0053]
For this reason, the total heat exchanger 4 supplies fresh external air to the rooms 1R and 2R via the housing 1 while discharging and guiding the indoor dirty air to the outside. Then, the indoor air and the external air exchange heat with each other, and the fluctuation of the room temperature is suppressed to be kept substantially constant.
[0054]
In this indoor unit, the indoor air suction portion 12 is provided at the lowermost portion of the housing 1, and the blow-out duct (blowing portion) 20 is connected to the uppermost portion, and heat exchange is performed from the lowermost portion to the uppermost portion of the housing 1. Since the air is allowed to flow, smooth flow of the heat exchange air in the housing 1 can be obtained.
[0055]
Since the indoor heat exchanger 3 is arranged in the middle of the heat exchange air flow path in the housing 1 and the heat exchanger 3 has almost the same dimensions and shape as the housing 1, the heat exchange air can be reliably supplied to the indoor. The heat exchanger 3 can be circulated to improve the heat exchange efficiency.
[0056]
The indoor blower 2 is arranged at the upper part of the housing 1, the indoor heat exchanger 3 is arranged at the lower part, and the total heat exchanger 4 and the exhaust blower 5 are arranged at the lowermost part of the housing 1. The structure is simplified and the flow of heat exchange air is smooth.
[0057]
In particular, since the total heat exchanger 4 and the exhaust blower 5 were arranged in the space below the housing 1 which was hardly used in the prior art, and the humidifying element 6 was arranged on the front surface of the indoor heat exchanger 3, It can be effectively used as a ventilation path for ventilation and a ventilation path for humidification.
[0058]
Since the suction unit 12 that sucks and guides indoor air into the housing 1 is provided in accordance with the driving of the indoor blower 2 and the exhaust blower 5, it is only necessary to attach a filter 13 having an integral structure, and the cost of parts due to integration of parts is reduced. It is possible to obtain the reduction and the installation labor.
[0059]
The total heat exchanger 4 includes only the exhaust blower 5, and the indoor blower 2 is also used as an intake blower. Therefore, also in this case, it is possible to reduce the cost of parts and the labor for mounting.
[0060]
The drain water generated in the indoor heat exchanger 3 is received by the drain plate 8, and the drain plate 8 receives dew flowing down from the humidifying element 6. As a result, it is possible to reduce the cost of parts and the labor for mounting.
[0061]
An electric precipitator 7 was arranged near the humidifying element 6. Therefore, the air exchanged with the indoor heat exchanger 3 is appropriately humidified by the humidifying element 6 and is also purified by the electric dust collector 7, so that high air quality is obtained.
[0062]
An indoor unit S was arranged outside the house Y, and an outdoor unit H was arranged adjacent to the indoor unit S, and integrated as an air conditioner. This eliminates the necessity of a space required for disposing inside the house Y, and saves space indoors.
[0063]
【The invention's effect】
Advantageous Effects of Invention As described above, according to the present invention, a relatively large air conditioner for all rooms in the whole building can improve the heat exchange efficiency by optimizing the internal configuration of the housing of the indoor unit and improve the structure. This has the effect of increasing the degree of freedom in design due to simplification and improving work efficiency in assembly work and maintenance work.
[Brief description of the drawings]
FIG. 1 is a sectional view of an indoor unit of an air conditioner according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating an air conditioning system for a house according to the embodiment.
FIG. 3 is a schematic configuration diagram of the air conditioner according to the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 3 ... indoor heat exchanger, 2 ... indoor blower, 4 ... total heat exchanger, 5 ... exhaust blower, 6 ... humidifying element, 1 ... housing | casing, 12 ... suction part (of indoor air), 20 ... outlet duct ( (Blow-out section), 11b: external air inlet, 11a: external air outlet, 13: filter.

Claims (3)

In an indoor unit of an indoor heat exchanger, an indoor blower, a total heat exchanger, and an air conditioner that houses an exhaust blower and a humidifying element in a housing,
Place the indoor blower at the top of the housing,
Along with disposing the indoor heat exchanger below the indoor blower, disposing the humidifying element in parallel with the indoor heat exchanger,
Placing the total heat exchanger and the exhaust blower at the bottom of the housing,
A suction unit that sucks and guides indoor air on the lowermost side surface of the housing, and a blowout unit that blows and guides air that has been heat-exchanged by the indoor heat exchanger at the top of the housing,
An indoor unit for an air conditioner, comprising an external air inlet and an external air outlet at a housing portion facing the total heat exchanger and the exhaust blower. The suction portion provided on the lowermost side surface of the housing is provided with a first suction port and a second suction port for sucking and guiding room air into the housing with driving of the indoor blower and the exhaust blower, respectively. The indoor unit for an air conditioner according to claim 1, wherein the first suction port and the second suction port are provided adjacent to each other. The indoor unit for an air conditioner according to claim 2, wherein the same filter is removably attached to the first suction port and the second suction port.

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