JP5587060B2

JP5587060B2 - Built-in air conditioner

Info

Publication number: JP5587060B2
Application number: JP2010149401A
Authority: JP
Inventors: 康弘茂木; 淳山内; 重光鎌田; 真由美齋藤
Original assignee: 三洋電機株式会社
Priority date: 2010-06-30
Filing date: 2010-06-30
Publication date: 2014-09-10
Anticipated expiration: 2030-06-30
Also published as: CN102313318A; JP2012013295A; ES2738556T3; KR20120002407A; EP2402669B1; EP2402669A3; EP2402669A2; KR101319770B1

Description

The present invention relates to a built-in air conditioner installed on a ceiling of a building.

2. Description of the Related Art Conventionally, a built-in type air conditioner in which a blowout duct is extended to a unit body that is installed on a ceiling portion of a building and accommodates a heat exchanger and a fan is known (see, for example, Patent Document 1). . In the built-in type air conditioner of Patent Document 1, the heat exchanger is formed in a flat plate shape, and is arranged vertically in a substantially vertical manner so as to be orthogonal to the blowing direction of the fan.

JP 2000-274724 A

However, in the above-described conventional configuration, since the plate-shaped heat exchangers are arranged vertically, when the capacity of the heat exchanger is increased, the size of the air conditioner is increased in the vertical direction. Particularly, since the installation space is limited in the built-in type air conditioner provided on the ceiling, it is desired to suppress the height of the built-in type air conditioner. In addition, it is possible to suppress the height of the built-in type air conditioner by arranging the flat plate heat exchanger obliquely, but if the heat exchanger is simply inclined, There is a problem that the distance from the exchanger becomes non-uniform and affects the efficiency of heat exchange.
The present invention has been made in view of the above-described circumstances, and in the built-in type air conditioner installed on the ceiling of the building, the heat exchange efficiency is improved while suppressing the height of the built-in type air conditioner. The purpose is to do.

In order to achieve the above object, the present invention provides a built-in type air conditioner including a unit body configured to accommodate a heat exchanger and a blower fan, wherein the heat exchanger includes a flat upper heat exchange section and a lower heat exchange section. Including a side heat exchange part, these heat exchange parts are connected to the square shape in a side view , and the open side of the square shape of the heat exchanger is opposed to the outlet of the blower fan, and the apex of the square shape The blower fan is provided with an air outlet of the air fan, and the air blower fan has the largest amount of air blown from the upper and lower intermediate points of the air outlet, and the air amount blown from the upper and lower positions is smaller than the intermediate point. The centrifugal blower is provided with the intermediate point of the outlet at a position deviated upward from a horizontal plane passing through the top of the heat exchanger, and the outlet is an extension of the air flow blown from the intermediate point Wherein the but provided inclined downwardly to intersect the apex of the shape of rather the.

Furthermore, a drain pump is provided in a space provided by separating the blower fan and the heat exchanger, the drain pump is disposed on one side in the unit body, and the heat exchanger is disposed in the unit body. It is good also as a structure which arranged near the other side in the inside, and extended the refrigerant | coolant piping connected to the said heat exchanger to the one side in the said unit main body .

ADVANTAGE OF THE INVENTION According to this invention, the efficiency of heat exchange can be made favorable, suppressing the height of a built-in type air conditioning apparatus.

It is a side view showing a 1st embodiment of a built-in type air harmony device to which an air harmony device concerning the present invention is applied. It is a perspective view of a duct specification built-in type air conditioner. It is a perspective view of a panel specification built-in type air conditioner. It is a perspective view which shows the structure in a unit main body. It is a top view of a unit main body. It is a side view which shows the structure in a unit main body. It is a side view which shows the structure in the unit main body in 2nd Embodiment.

Hereinafter, an air conditioner according to an embodiment of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 shows a first embodiment of a built-in type air conditioner to which an air conditioner according to the present invention is applied, FIG. 1 (A) is a duct type built-in type air conditioner, and (B) is a panel type. It is a side view which shows a built-in type air conditioning apparatus, respectively.

The duct specification built-in type air conditioner 40 (built-in type air conditioner) shown in FIG. 1 (A) and the panel specification built-in type air conditioner 30 (built-in type air conditioner) shown in FIG. The indoor space heat exchanger 60 (heat exchanger) and the fan 55 that blows air to the indoor heat exchanger 60 are disposed in a ceiling space 34 between the ceiling 32 and the ceiling plate 33 of the building 31. A unit main body 35 containing a fan) and a blowout duct 36 extending from the unit main body 35 to the ceiling plate 33.

FIG. 2 is a perspective view of the duct specification built-in type air conditioner 40. FIG. 3 is a perspective view of the panel specification built-in type air conditioner 30.
A main body case 54 of the unit main body 35 has a top plate 39 at the upper edge portion and four bottom plates 46 at the lower edge portions of the four side plates 38A, 38B, 38C, 38D, which are arranged opposite to each other and provided in a square frame shape. Each is configured to be fixed.

A plurality of suspension fittings 41 are fixed to the side plates 38C and 38D in the width direction of the body case 54 of the unit body 35, and the suspension fittings 41 are fastened to suspension bolts 42 suspended from the ceiling 32 of the building 31, The specification built-in type air conditioner 40 and the panel specification built-in type air conditioner 30 are suspended from the ceiling 32 of the building 31.

The indoor heat exchanger 60 accommodated in the main body case 54 is connected to an outdoor unit (not shown) through a refrigerant pipe 44 (see FIG. 5).
The indoor heat exchanger 60 cools or heats the air sucked into the unit body 35 by evaporation or condensation of the refrigerant guided from the outdoor unit.

A plurality of the blowout ducts 36 shown in FIG. 1 are usually extended from the unit main body 35. One end of each of the blowout ducts 36 is fitted to a blowout port 47 (see FIGS. 2 and 3) integrally installed on the side plate 38 A facing the blowing direction of the fan 55 in the main body case 54, and the blowout grill is formed at the other end. 48 is attached. The blowing grill 48 is installed at an appropriate position on the ceiling plate 33 and exposed to the indoor side.
The fan 55 of the unit body 35 sucks indoor air into the unit body 35 and blows this air to the indoor heat exchanger 60, and the air heat-exchanged by the indoor heat exchanger 60 is blown out through the blowout duct 36. It is blown out from the grill 48 into the room.

Incidentally, the panel specification built-in type air conditioner 30 shown in FIG. 1B and FIG. 3 has a ceiling panel 49 fitted in the lower opening of the unit body 35. The ceiling panel 49 includes a suction plate 50 at a central position, and indoor air sucked from a suction port of the suction plate 50 is introduced into the unit main body 35.

Moreover, the duct specification built-in type air conditioner 40 shown in FIG. 1 (A) and FIG. 2 is a side plate (that is, the side plate on the back side of the duct specification built-in type air conditioner 40) facing the side plate 38A on which the air outlet 47 is installed. 38B) is formed with a suction opening 56 (see FIG. 4), and a single suction duct 52 is normally connected to the side plate 38B via a filter box 51, for example. A suction grill 53 is fitted to the end of the suction duct 52 on the ceiling plate 33 side, and the suction grill 53 is installed at an appropriate position on the ceiling plate 33. Indoor air is sucked from the suction grille 53 and introduced into the unit main body 35 through the suction duct 52.
The lower opening of the unit main body 35 of the duct specification built-in type air conditioner 40 is closed by a wind shielding plate 57.

FIG. 4 is a perspective view showing the configuration inside the unit main body 35. FIG. 5 is a plan view of the unit main body 35 and shows a state in which the top plate 39 is removed. FIG. 6 is a side view showing the configuration inside the unit main body 35.
As shown in FIGS. 4 to 6, the main body case 54 has a fan chamber 65 for accommodating the fan 55 and a heat exchanger chamber 66 for accommodating the indoor heat exchanger 60 by a partition plate 61 substantially parallel to the side plate 38 B. It is divided into and.

Further, as shown in FIG. 4, between the one end 59A and the other end 59B of the indoor heat exchanger 60 and the inner surface of the side plate 38A, the upstream side and the downstream side of the indoor heat exchanger 60 in the heat exchanger chamber 66 are provided. A partition wall 20 is provided for partitioning. A space on the downstream side of the indoor heat exchanger 60 in the heat exchanger chamber 66 is a conditioned air chamber 21 through which the air heat-exchanged in the indoor heat exchanger 60 passes. A heat insulating material 28 is attached to each partition wall 20 that partitions the conditioned air chamber 21 and the upper surface 21 A of the conditioned air chamber 21.

In the fan chamber 65, an electrical box 67 (see FIG. 5) that houses the fan 55 and electrical components such as a control unit that controls the air conditioner is disposed.
The heat exchanger chamber 66 is provided with a drain pan 62 (see FIG. 6) that receives the drain water of the indoor heat exchanger 60, and a drain pump 63 that discharges the drain water stored in the drain pan 62 to the outside of the unit body 35. It has been. 4 and 5, the drain pan 62 is not shown.

The fan 55 includes a cylindrical fan body 55A having a large number of blades, a fan case 55B that houses the fan body 55A, and a fan motor 55D that rotates the fan body 55A by a motor shaft 55C that extends in the axial direction of the fan body 55A. And is configured. Here, the fan 55 is a sirocco fan that is a centrifugal blower.
The partition plate 61 is provided with a rectangular opening 61A, and the rectangular outlet 68 of the fan 55 is connected to the opening 61A and exposed to the heat exchanger chamber 66 side. The fan 55 is disposed at an intermediate portion between the side plates 38C and 38D, and the outlet port 68 of the fan 55 is disposed at a substantially intermediate portion in the longitudinal direction of the partition plate 61. The position of the outlet port 68 is that of the heat exchanger chamber 66. In the width direction, it substantially coincides with the middle portion of the indoor heat exchanger 60 in the longitudinal direction.
Further, as shown in FIG. 6, the air outlet 68 is disposed so as to face the upper part of the heat exchanger chamber 66, and the lower wall 68 A of the air outlet 68 is located at the upper and lower intermediate positions of the heat exchanger chamber 66. Is also located above.

As shown in FIG. 4, the side plate 38B of the fan chamber 65 is detachably provided with a closing plate 56A that closes the suction opening 56 when the filter box 51 is not connected.
The side plate 38D of the fan chamber 65 is provided with a cover plate 58 that closes an opening that is opened when the electrical box 67 and the fan 55 are maintained.

As shown in FIG. 6, the drain pan 62 is supported on the bottom plate 46 and is disposed in the lower part of the heat exchanger chamber 66. The drain pan 62 extends substantially fully in the depth direction of the unit main body 35 between the side plate 38A and the partition plate 61, and a heat exchanger support portion 69 protruding upward is formed at an intermediate portion thereof. The heat insulating material 28 is also provided on the lower surface of the drain pan 62.
The lower end of the indoor heat exchanger 60 is supported by a heat exchanger support 69 that extends in the width direction of the unit body 35. The heat exchanger support 69 is formed with a water channel that allows the heat exchanger chamber 66 side and the conditioned air chamber 21 to communicate with each other.

The indoor heat exchanger 60 is a fin-and-tube heat exchanger, and includes a pair of tube plates 60A extending in the ventilation direction, and a plurality of fin plates 60B arranged at intervals between the tube plates 60A, A plurality of tubes 60C penetrating these fin plates 60B are provided. The tube 60C is connected as one refrigerant pipe by a U-shaped portion provided at the end of each tube 60C.

The indoor heat exchanger 60 extends between the side plates 38C and 38D in the longitudinal direction, and a space S positioned on one side 35A in the width direction in the unit body 35 between the longitudinal end 59A and the side plate 38D. Is formed. Further, the indoor heat exchanger 60 is arranged close to the other side 35B in the unit main body 35 on the other end 59B side in the longitudinal direction.
The indoor heat exchanger 60 is connected to the outdoor unit (not shown) by a pair of refrigerant pipes composed of a gas pipe and a liquid pipe, and one refrigerant pipe 44 is shown in FIG. The refrigerant pipe 44 is connected to one end 59A in the longitudinal direction of the indoor heat exchanger 60, and extends through the side plate 38C. The other refrigerant pipe (not shown) is also connected together at one end 59A and extends toward the side plate 38C. That is, the pair of refrigerant pipes including the refrigerant pipe 44 are arranged in the space S together. For this reason, the unit main body 35 can be made into a simple structure.

The indoor heat exchanger 60 is configured by combining two flat heat exchangers, and is arranged at the upper heat exchanger 71 (upper heat exchanging portion) disposed at the upper portion of the heat exchanger chamber 66 and at the lower portion. And a lower heat exchanger 72 (lower heat exchanging part).
The upper heat exchanger 71 and the lower heat exchanger 72 are connected by a connecting portion 73 (vertical vertex) provided between the lower end of the upper heat exchanger 71 and the upper end of the lower heat exchanger 72. The indoor heat exchanger 60 is formed in a dogleg shape in which both ends 74 extend vertically when viewed from the side of the side plate 38C. The connecting portion 73 corresponds to the top of the dog-shaped shape of the indoor heat exchanger 60. Thus, since the indoor heat exchanger 60 was formed in the shape of a square extending up and down, the height of the heat exchanger in the unit main body 35 can be increased as compared with the case where the flat plate heat exchanger is arranged vertically. Can be lowered.
The indoor heat exchanger 60 is formed such that the upper heat exchanger 71 and the lower heat exchanger 72 are substantially symmetrical with respect to a horizontal plane H passing through the connecting portion 73. The side heat exchanger 72 has substantially the same size in the height direction and depth direction of the unit body 35.

The heat exchanger chamber 66 is provided with a space P located between the partition plate 61 and the indoor heat exchanger 60 by disposing the outlet 68 of the fan 55 and the indoor heat exchanger 60 apart from each other. The drain pump 63 is disposed on one side 35 A in the unit main body 35 in the space P. The space P is continuous with the space S at the corner of the heat exchanger chamber 66, and the drain pump 63 is disposed adjacent to the pair of refrigerant pipes including the refrigerant pipe 44.
On the surface of the side plate 38C, in the vicinity of the drain pump 63, a cover plate 25 that closes an opening that is opened during maintenance of the drain pump 63, the refrigerant piping, and the like is provided.

As shown in FIG. 6, the indoor heat exchanger 60 is arranged in such a direction that the open side 75 of the U shape faces the outlet 68 of the fan 55. In other words, the indoor heat exchanger 60 is arranged in such a manner that the both ends 74 of the square shape face the fan 55 side and the connecting portion 73 that is the apex of the square shape faces the conditioned air chamber 21 side. A gap G that is large enough to arrange the drain pump 63 is secured in the depth direction between the both ends 74 of the square shape and the outlet 68 of the fan 55. In this way, the gap G is secured, and the airflow blown out from the blowout port 68 spreads in the vertical direction and the width direction as the distance from the blowout port 68 increases, so that the upper heat exchanger 71 and the lower heat exchanger 72 are evenly distributed. You can spread the blast.

The blower outlet 68 of the fan 55 is located at the upper part of the indoor heat exchanger 60 and is tilted downward toward the connecting portion 73 so that the entire indoor heat exchanger 60 can be blown uniformly. Specifically, the lower wall 68A and the upper wall 68B constituting the lower surface and the upper surface of the blowing passage of the blowing port 68 are provided so as to be inclined downward toward the connecting portion 73 side. The midpoint M in the vertical direction of the blowout port 68 is located at a position deviating upward from the extension of the horizontal plane H passing through the connecting portion 73, and the airflow of the fan 55 blows out along the lower wall 68A and the upper wall 68B. Then, the airflow from the intermediate point M reaches the periphery of the connecting portion 73.

Here, the airflow blown out from the fan 55 will be described with reference to FIGS. 5 and 6. 5 and 6, the direction of the airflow is indicated by an arrow, and the length of the arrow corresponds to the air volume.
The fan 55 is a sirocco fan, and the amount of air blown from the central portion of the outlet 68 is the largest, and the amount of air blown from the outside of the central portion is smaller than the amount of air blown from the center. Therefore, in FIGS. 5 and 6, the airflows of the airflows X1 and Z1 at the center are large, and the airflows of the airflows X2 and Z2 and the airflows X3 and Z3 blown from the outside are smaller than the airflows X1 and Z1.

As shown in FIG. 5, since the outlet 68 is disposed at a position corresponding to the middle portion of the indoor heat exchanger 60 in the longitudinal direction, the air can be uniformly blown in the longitudinal direction of the indoor heat exchanger 60, and the efficiency of heat exchange Can be improved. In addition, a gap G is provided between the air outlet 68 and the indoor heat exchanger 60, and the airflow sufficiently spreads like the airflows X2 and X3 to reach the one end 59A and the other end 59B in the longitudinal direction. Can blow evenly in the longitudinal direction.

As shown in FIG. 6, the indoor heat exchanger 60 is arranged such that the open side 75 of the letter “U” faces the outlet 68 of the fan 55, and the upper heat exchanger 71 and the lower heat exchanger 72 are arranged. Is more distant from the outlet 68 as it goes to the connecting portion 73 side, and closer to the outlet 68 as it goes to both ends 74 side. The airflow Z1 blown out from the middle point M in the vertical direction of the outlet 68 has a larger air volume than the airflows Z2 and Z3 outside the middle point M. For this reason, sufficient air volume can be supplied also to the vicinity of the connection part 73 which is distant from the blower outlet 68. Further, since the portion in the vicinity of both ends 74 in the indoor heat exchanger 60 is located near the outlet 68, even in the case of the airflows Z2 and Z3 having a smaller air volume than the airflow Z1, the portion in the vicinity of both ends 74 Sufficient air volume can be supplied.

In this way, the indoor heat exchanger 60 is made to correspond to the distribution of the air volume of the fan 55 where the air volume Z1 from the intermediate point M is large. Since the air outlet Z is arranged in the direction in which the airflow Z1 reaches the connecting portion 73, the air can be evenly distributed in the vertical direction of the indoor heat exchanger 60, and the heat exchange efficiency is improved. be able to.
Further, a gap G is provided between the air outlet 68 and the indoor heat exchanger 60, so that the air flow sufficiently spreads and reaches both ends 74 corresponding to the ends in the height direction like the air flows Z2 and Z3. , Can blow evenly in the height direction.

As described above, according to the first embodiment to which the present invention is applied, the upper heat exchanger 71 and the lower heat exchanger 72 are connected in a square shape in a side view so that the indoor heat exchanger is 60 is provided, and the blowout port 68 of the fan 55 is provided so as to oppose the connecting portion 73 that is the apex of the character, so that the height of the indoor heat exchanger 60 can be reduced, and the fan 55 and the indoor heat exchanger 60 can be reduced. The distance between and is not greatly uneven. For this reason, it is possible to improve the efficiency of heat exchange while suppressing the height of the unit body 35.

Further, the air flow Z1 from the intermediate point M of the outlet 68 is blown toward the connecting portion 73, whereby the intermediate point M of the outlet 68 of the fan 55 is on the horizontal plane H passing through the connecting portion 73 of the indoor heat exchanger 60. Even if it is the structure which exists in the position which deviated upwards from the extension line, ventilation can be uniformly distributed to the upper side heat exchanger 71 and the lower side heat exchanger 72, and the efficiency of heat exchange can be made favorable.
Further, the open side 75 of the square shape of the indoor heat exchanger 60 faces the outlet 68 of the fan 55, and the shape of the air inlet side of the indoor heat exchanger 60 corresponds to the air volume distribution of the fan 55. Therefore, the efficiency of heat exchange can be improved.

Furthermore, by arranging the air outlet 68 of the fan 55 and the indoor heat exchanger 60 with a gap G, the range of air blowing from the air outlet 68 is widened, so that air is also blown to the end of the indoor heat exchanger 60. Thus, the heat exchange efficiency can be improved. In addition, since the pair of refrigerant pipes including the drain pump 63 and the refrigerant pipe 44 are collectively provided on one side 35A in the width direction in the unit main body 35, the unit main body 35 can have a simple structure.
Further, since the fan 55 is a sirocco fan that is a centrifugal blower, a large static pressure can be obtained, and the indoor heat exchanger 60 and a relatively long blow-out duct 36 extending to the ceiling plate 33 are provided downstream of the fan 55. Even with this configuration, a large air flow rate can be obtained.

In addition, the said 1st Embodiment shows the one aspect | mode which applied this invention, Comprising: This invention is not limited to the said 1st Embodiment.
In the said 1st Embodiment, although the vertex of the character-shape demonstrated as what was the connection part 73, this invention is not limited to this, The upper side heat exchanger 71 and the lower side heat exchanger 72 may be the apex of the character in the heat exchanger provided integrally with the character.

[Second Embodiment]
Hereinafter, a second embodiment to which the present invention is applied will be described with reference to FIG. In the second embodiment, parts that are configured in the same manner as in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.
In the unit main body 135 of the second embodiment, the indoor heat exchanger 60 connected to the letter “U” is arranged so as to have an inverted letter in a side view from the side plate 38C side. This is different from the first embodiment.

FIG. 7 is a side view showing a configuration inside the unit main body 35 in the second embodiment.
As shown in FIG. 7, the indoor heat exchanger 60 is disposed in the heat exchanger chamber 66 in a state where the open side 75 of the “<” shape is directed to the downstream side of the indoor heat exchanger 60. 73 faces the outlet 68 of the fan 55. That is, in the indoor heat exchanger 60, both ends 74 of the letter “U” face the conditioned air chamber 121 side located downstream of the indoor heat exchanger 60, and the connecting portion 73 that is the apex of the letter “U” is on the fan 55 side. In the direction facing the side plate 38, the side plate 38 C is disposed so as to be reversed in a side view from the side. A gap G having a size that allows the drain pump 63 to be disposed is secured in the depth direction between the connecting portion 73 at the top of the square shape and the outlet 68 of the fan 55.
The airflow Z1 blown from the middle point M in the vertical direction of the blowout port 68 is blown along the lower wall 68A and the upper wall 68B and flows in the vicinity of the connecting portion 73.

In the second embodiment, both ends 74 of the letter-shaped portion extend to the conditioned air chamber 121 side, and the distance between the side plate 38A and both ends 74 of the letter-shaped shape is short, so that the depth of the upper surface 121A of the conditioned air chamber 121 is increased. The direction length is smaller. For this reason, the length of the heat insulating material 128 covering the upper surface 121A of the conditioned air chamber 121 in the depth direction can be reduced, and the amount of the heat insulating material 128 used can be reduced.
Further, the heat exchanger support 169 provided in the drain pan 62 is formed close to the side plate 38A.

30 Panel Specifications Built-in Air Conditioner (Built-in Air Conditioner)
35, 135 Unit body 35A One side 35B The other side 40 Duct specification built-in type air conditioner (built-in type air conditioner)
44 Refrigerant piping 55 Fan (fan)
60 Indoor heat exchanger (heat exchanger)
68 Outlet 71 Upper heat exchanger (Upper heat exchange part)
72 Lower heat exchanger (lower heat exchanger)
73 connecting part (vertex of the character)
75 Open side M Middle point

Claims

In a built-in type air conditioner having a unit body configured to accommodate a heat exchanger and a blower fan,
The heat exchanger includes a plate-like upper heat exchange part and a lower heat exchange part, and these heat exchange parts are connected to a square shape in a side view , and the open side of the square shape of the heat exchanger While facing the blowout port of the fan, the blower port of the blower fan is provided facing the top of the character ,
The blower fan is a centrifugal blower having the largest amount of air blown from the upper and lower intermediate points of the blowout port, and a smaller amount of air blown from the upper and lower positions than the intermediate point,
Providing the intermediate point of the outlet at a position deviated upward from a horizontal plane passing through the apex of the cross of the heat exchanger;
The built-in type air conditioner , wherein the blowout port is provided so as to be inclined downward so that an extended line of the airflow blown from the intermediate point intersects the apex of the character .
A drain pump is provided in a space provided separately from the blower fan and the heat exchanger, the drain pump is disposed on one side in the unit body, and the heat exchanger is disposed in the unit body. disposed closer to the other side, according to claim 1 Symbol placement built type air conditioner device, characterized in that a refrigerant pipe connected to the heat exchanger extending on one side in the unit body.