JP2009204268A - Indoor embedded type heat source machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a thin and compact indoor embedded type heat source machine having high reliability and heat-exchanging performance. <P>SOLUTION: The indoor embedded type heat source machine includes a casing; a partition plate 23 partitioning the casing into a suction space and a blowout space; a suction port 14 formed on the surface of the casing for sucking air into the suction space; a blowout port 15 formed on the surface of the casing for blowing off air from the blowout space; a fan 25 provided on the partition plate side in the suction space for blowing off air from the suction space side into the blowout space; a fan motor 26 coupled to the fan 25; a horizontal type compressor 1 provided in the suction space and arranged coaxially with respect to the rotating shaft of the fan 25; and a heat exchanger 3 provided between the fan 25 and the horizontal type compressor 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an indoor embedded heat source apparatus that is configured to exchange heat with outdoor air using a heat source apparatus embedded indoors, and more particularly to the housing structure and the arrangement and attachment of refrigeration cycle components.

  In general, an outdoor unit (heat source unit) of an air conditioner is installed outside a building. Therefore, the scenery may be damaged by seeing the outdoor unit from the road. In Europe, in old towns and designated areas for cultural properties, there are cities or areas where outdoor units are restricted from being seen by people such as rooftops and verandas due to landscape regulations. Therefore, an air conditioner of a type in which the outdoor unit is disposed indoors has been desired.

  For example, Patent Document 1 discloses a conventional technique. The outdoor unit of the air conditioner shown in this document includes a compressor, a heat exchanger, a blower, and electrical components, and is connected to a suction port on both sides of the heat exchanger arranged in the center and the blower. An air passage inlet is provided. A machine room partitioned by a side plate is provided adjacent to the air passage, and a compressor and electric parts are installed in the machine room.

JP-A-62-218745

  However, in the structure of Patent Document 1, there are two narrow suction passages and one wide outlet passage, and it is necessary to provide three ducts during duct work. In addition, sufficient consideration is not given to reliability due to heat generation in a machine room containing electrical components, and further downsizing of the outdoor unit outer casing (housing).

  As mentioned above, the heat source equipment installed indoors is a thin and lightweight housing that can be installed in buildings with a low ceiling height that has been increasing in recent years, as well as installation work and serviceability. Is required to be easy. In addition, a power-saving high-efficiency air conditioner is required from the viewpoint of preventing global warming. Furthermore, since indoors are shielded from the outdoors, a low noise and low vibration housing structure is required.

  An object of the present invention is to obtain a thin and compact indoor embedded heat source machine.

  Another object of the present invention is to obtain a highly reliable indoor embedded heat source machine.

  Still another object of the present invention is to provide an indoor embedded heat source machine having high heat exchange performance.

  In order to achieve the above object, the present invention is characterized by a housing, a partition plate that partitions the housing into a suction space and a blow-out space, and a suction port that is provided on the housing surface and sucks air into the suction space. A blower outlet provided on the housing surface for blowing air from the blowout space, a fan provided on the partition plate side of the suction space and blowing air from the suction space side to the blowout space, and the fan A fan motor connected to the fan, a horizontal compressor provided in the suction space and disposed coaxially with the rotation axis of the fan, and a heat exchanger provided between the fan and the horizontal compressor It is in an indoor embedded heat source machine equipped with.

  Other features of the present invention include a housing, a partition plate that partitions the housing into a suction space and a blow-out space, a suction port that is provided on the housing surface and sucks air into the suction space, and on the housing surface. Between the centrifugal fan, and a blower outlet that blows air from the blowout space, two centrifugal fans that are provided on the partition plate side of the suction space and blows air from the suction space side to the blowout space, and A fan motor provided in the suction space, a horizontal compressor provided in the suction space and disposed coaxially with the rotation axis of the centrifugal fan, and heat provided between the centrifugal fan and the horizontal compressor. An indoor embedded heat source apparatus including an exchanger and an electrical component box provided in the blowing space from which air is blown from the suction space side.

  Here, the suction port may be provided in the housing surface on the suction direction side of the centrifugal fan, and one end of the heat exchanger may be installed to extend between the centrifugal fan and the suction port.

  Still another feature of the present invention is that a housing, a partition plate that partitions the housing into a suction space and a blow-out space, a suction port that is provided on the housing surface and sucks air into the suction space, and the suction port An air outlet that blows out air from the blowing space, two centrifugal fans that are provided along the partition plate side of the suction space and blows air into the blowing space, and the centrifugal fan Provided between the centrifugal fan and the horizontal compressor, and a fan motor provided between the centrifugal fan and the horizontal compressor disposed in the same direction as the rotation axis of the centrifugal fan. A heat exchanger, wherein the suction port is provided on the housing surface on the suction direction side of the centrifugal fan, and one end of the heat exchanger is installed extending between the centrifugal fan and the suction port. There is an indoor embedded heat source machine.

  Here, you may provide an electrical component box in the said blowing space where air blows off from the said suction space side.

  In addition, in the above-described configuration including an inverter that drives the horizontal compressor, the inverter may be provided in the electrical component box.

  In addition, the said housing | casing may combine and form the suction space side housing | casing which comprises the said suction space, and the blowing space side housing | casing which comprises the said blowing space.

  According to the present invention, a housing is partitioned into a suction space and a blow-out space, a fan that is provided in the suction space and blows air into the blow-out space, and a horizontal compressor that is arranged coaxially with the rotation axis of the fan; Since the heat exchanger provided between the fan and the horizontal compressor is provided, an indoor embedded heat source apparatus having a thin casing and a compact size can be obtained.

  In addition, since the electrical component box is arranged in the middle of the air passage of the blowout space, it is not necessary to secure a large space in the suction space, and further compactness can be achieved and cooling of the electrical component box that generates heat can be achieved. This makes it possible to improve the reliability of the indoor embedded heat source device.

  In addition, since one end of the heat exchanger is installed to extend between the fan and the suction port, not only can the heat transfer area of the heat exchanger be expanded, but the heat exchanger is placed close to the suction port. Thus, the outside air can be efficiently taken into the heat exchanger. Therefore, the heat exchange performance can be further improved.

  Embodiments relating to the present invention will be described below with reference to the drawings.

  The indoor embedded heat source apparatus according to the present embodiment is installed indoors and is generally installed in a space between the ceiling 20 and the ceiling board 21. As shown in FIG. 3 (a), as a form of installation, a suspension stay 16 attached to an indoor embedded heat source machine is hung on four suspension bolts 19 suspended from the ceiling 20 to hang it. Installed down.

  Alternatively, when the ceiling plate 21 is strong, as shown in FIG. 3 (b), an anti-vibration material 36 or the like is laid on the ceiling plate 21, and an indoor embedded heat source machine is directly placed thereon. Install. For this reason, the bottom surface of the indoor embedded heat source machine is not provided with a projection such as a screw, and is a horizontal plane.

  Moreover, as shown to Fig.4 (a), the air suction inlet 14 and the air blower outlet 15 of an indoor embedded type heat source machine are arrange | positioned at the same side surface. The indoor embedded heat source machine is attached in the vicinity of the outer wall 33 of the building and often takes outside air through the lattice gallery 32 for sucking outside air provided in the building. The outlets 15 are preferably arranged on the same plane.

  When installed in a place slightly away from the outer wall 33 of the building, as shown in the figure, the air inlet 14 and the air outlet 15 are structured to be connected to the wall surface of the building via the air duct 22 and installed. The air duct 22 can be easily attached at the time of construction. In addition, the external static pressure of this product can handle up to about 50 Pa. Thereby, the improvement of the freedom degree of a product installation place can be aimed at.

  Further, as shown in FIG. 4 (b), the indoor embedded heat source machine can be installed also in the corner portion of the building. A housing structure that enables the air suction port 14 to be provided also on the side surface of the housing on the side of the housing. That is, the mounting position of the air suction port 14 can be changed, and the degree of freedom of installation of the product is further expanded.

  The indoor embedded heat source machine has a structure shown in FIGS. A partition space 23 divides a suction space having the air suction port 14 and a blow-out space having the air blow-out port 15. In the suction space, there are a compressor 1, a refrigerant amount regulator 8, an outdoor heat exchanger (heat exchanger of a heat source machine) 3, a fan motor 26, a sirocco fan 25 fastened to both shafts of the fan motor 26, and these sirocco fans. A fan casing 24 provided so as to surround 25 is disposed and fastened to the partition plate 23. Moreover, the four-way valve 2, the outdoor expansion valve (expansion valve of the heat source unit) 5 and the cycle piping constituting the refrigeration cycle are also arranged in the suction space. On the other hand, an electrical component box 17 is arranged in the blowing space.

  Since indoor embedded heat source equipment is installed behind the ceiling, the product with the lowest product height can be installed in more diverse buildings. Therefore, the product height of the present invention is set to be less than 450 mm, which is the height of the ceiling under the building standard in a specific region of Europe, and the product width is 3 times higher than the building standard of the ceiling beam spacing of 4000 mm in the specific region of Europe. The dimensions are set so that they can be installed continuously beside the table. For example, the product height is 430 mm or less, and the width and depth are 500 to 1300 mm.

  The refrigeration cycle system diagram of the indoor embedded heat source machine is shown in FIG. The refrigeration cycle is configured by connecting an outdoor unit (heat source unit) 12 and an indoor unit 13 with refrigerant piping.

  An outdoor expansion valve 5 is attached to the outdoor unit 12 and adjusts the amount of refrigerant. The outdoor heat exchanger 3 is provided with a sub-cooler 7 so as to improve performance by ensuring a large degree of supercooling. Moreover, the refrigerant | coolant amount regulator 8 is provided after the subcooler 7, and the surplus refrigerant | coolant is adjusted. Further, a circuit that bypasses the suction side and the discharge side of the compressor 1 is provided, and the capillary 37 and the electromagnetic valve 11 are provided. This is attached to prevent the liquid refrigerant from returning to the compressor 1 during a transition such as when the compressor is started.

  On the other hand, an indoor heat exchanger 4 and an indoor expansion valve 6 are attached to the indoor unit 13.

In order to keep the product height of the indoor embedded heat source machine low, the horizontal compressor 1 is adopted. A centrifugal sirocco fan 25 is adopted as the blower. In order to obtain an air volume of 60 m ³ with a single sirocco fan 25 for a product with a cooling capacity of 12.5 kW, the sirocco fan 25 and the fan casing 24 become large-diameter parts, which is an obstructive factor for product thickness reduction. Therefore, in this embodiment, two small sirocco fans 25 are used, and the product height is reduced by making the fan casing 24 thinner.

  In this embodiment, a sirocco fan is used, but other centrifugal fans may be used. Furthermore, a cross-flow fan may be employed depending on the structure of the fan casing.

  Moreover, in order to reduce the height of the product, it is necessary to reduce the height of the outdoor heat exchanger 3 as well. However, it is necessary to increase the heat transfer area of the outdoor heat exchanger 3 as much as possible in order to ensure performance such as cooling / heating capability. Therefore, by making the shape of the outdoor heat exchanger 3 L-shaped, the heat exchanger area can be secured to the maximum in a narrow space. In addition, the number of rows of refrigerant pipes in the outdoor heat exchanger 3 is set to four to maximize the amount of heat exchange. As the number of rows increases, the heat transfer area increases and the amount of heat exchange increases, but on the other hand, the ventilation resistance increases and the amount of air flow decreases, resulting in a decrease in heat exchange amount. Therefore, the optimum four rows are selected from the relationship between the ventilation resistance and the heat exchange amount depending on the number of heat exchanger rows.

  A horizontal inverter compressor is used for the compressor 1. In the case of a constant speed machine, since the operation state of the compressor 1 is ON / OFF control during room temperature control, the comfort of the indoor air-conditioned room is impaired and the power consumption is large and not efficient. By adopting a compressor, optimum operation by frequency control becomes possible. Since the frequency of the inverter can be varied in a range of approximately 15 Hz to 115 Hz, there are merits such as improvement of the startup characteristics of cooling and heating and reduction of power consumption.

  Since the compressor 1 is a heavy object of 30 kg or more, it is disposed in the vicinity of the suspension stay 16 at the corner portion of the cabinet (housing). This suppresses the deflection of the cabinet and at the same time facilitates the transmission of vibration from the compressor 1 to the suspension bolt 19. In order to suppress the deflection of the cabinet, a member that reinforces the bottom surface of the cabinet may be provided. Moreover, in order to prevent the abnormal sound which generate | occur | produces from the compressor 1, the compressor fixing plate 34 is provided in the lower surface of the compressor 1, and it suppresses that a sound propagates to the indoor side of a building.

  The outdoor heat exchanger 3 is disposed between the fan casing 24, the fan motor 26, the compressor 1, and the refrigerant amount adjuster 8. The part close to the air inlet 14 is the short side of the L-shaped outdoor heat exchanger 3 to promote heat exchange. The long side of the L-shaped outdoor heat exchanger 3 reduces the suction resistance by moving the compressor 1 and the refrigerant amount regulator 8 away from the air suction port 14 so that heat exchange can be effectively performed. The gas header and liquid header of the outdoor heat exchanger 3 are attached to the long side of the outdoor heat exchanger 3 in order to shorten the cycle piping connected to the compressor 1 and the like.

  The blower including the fan casing 24, the sirocco fan 25, and the fan motor 26 is fixed to the partition plate 23 that partitions the suction space and the blowout space, and is disposed between the casings. Two sirocco fans 25 are used, and the fan motor 26 is of both shafts and is disposed between the two sirocco fans 25. On the other hand, two sirocco fans 25 can be arranged side by side with the fan motor 26 as one axis. In this case, it is necessary to connect the shaft with a coupling. The rotation axis of the fan motor 26 is arranged side by side with the rotation axis of the horizontal compressor 1. Thus, for example, if the rotation axis of the fan motor 26 and the rotation axis of the horizontal compressor 1 are made parallel, the projected area onto the air intake port 14 is minimized, so that the intake air from the air intake port 14 Resistance can be minimized, contributing to noise reduction on the intake air side.

  The sirocco fan 25 on the side close to the air intake port 14 has a large intake air amount and a large amount of work on the fan, but the sirocco fan 25 on the side far from the air intake port 14 has a large in-machine resistance, so the intake air amount becomes small. The fan's workload is reduced. The ratio is approximately 7 to 3 or 6 to 4 on the side closer to and far from the air suction port 14 depending on conditions. Although the sirocco fan 25 of FIG. 1 employs the same diameter, the sirocco fan 25 on the side close to the air intake port 14 has a large diameter and the sirocco fan 25 on the far side has a small diameter. A fan can also be employed.

  An AC motor is used for the fan motor 26 for the blower, and thyristor control is used for fan control. The thyristor control can perform multi-stage control compared to the tap control, and can switch the fan step according to the control factor. As a means for reducing fan input, there is a method of adopting a highly efficient DC motor. Further improvement of the cooling / heating COP is expected by reducing the input.

  The electrical component box 17 is disposed in the blowing space of the housing. Since the motor of the compressor 1 is inverter-driven, the electrical component box 17 is provided with an inverter driving device. Since the inverter driving device generates a large amount of heat, it is provided with inverter fins 18 for heat dissipation. In order to improve the heat dissipation performance from the inverter fin 18, the inverter fin 18 is disposed so as to be exposed outside the electrical component box 17, and the air blown from the sirocco fan 25 is directly applied to the inverter fin 18, thereby improving the heat dissipation performance. It is increasing.

  Moreover, in order to rectify the flow of the airflow in the blowing space of the housing and reduce the pressure loss, the shape of the electrical component box 17 was formed in a trapezoidal shape. As a result, the in-machine resistance can be improved.

  It is desirable that the volume ratio or the width dimension ratio between the suction space and the blowout space of the housing is 5 to 5 or 6 to 4, respectively. When either one of the spaces is narrow, the opening area of the air inlet 14 or the air outlet 15 becomes narrow, so the passing wind speed becomes excessive and the pressure loss increases. As a result, the input of the fan motor 26 increases and the cooling / heating COP decreases. In addition, the noise increases due to wind noise due to excessive wind speed.

  As shown in FIG. 6, the indoor embedded heat source machine performs service and maintenance of products from the service side plates 28a and 28b, which are opposite to the surfaces on which the suction side plate 29b and the air outlet side plate 29a are provided. There are many cases. The reason for this is that the service space is limited when the ceiling height is low on the top surface of the indoor embedded heat source machine, and the left and right sides may be installed continuously or close to the wall of the building. This is because the service space is limited. Furthermore, since the lower surface is heavy, such as a compressor, the service window cannot be opened from a structural and strength standpoint.

  Accordingly, by arranging the electrical component box 17 on the back side (inside side) of the service side plate 28a, wiring connection work can be easily performed. In addition, as shown in FIG. 1, the refrigerant side gas side blocking valve 9, the liquid side blocking valve 10, the drain line are provided so that the product can be accessed from the service space even when the refrigerant piping work or the drain piping work is performed when the product is installed. The drain bosses 27b for piping are all disposed on the service side plate 28b side, which is the service space side of the product.

  The indoor embedded heat source machine is equipped with heavy objects such as a compressor 1, an outdoor heat exchanger 3, and a fan motor 26, and has sufficient strength to suspend a cabinet (housing) incorporating these from the ceiling 20. It is necessary to have. It is also necessary to have a structure that suppresses vibrations caused by the compressor 1 and the fan motor 26. Therefore, as shown in FIG. 5 (a), the bottom base of the cabinet has a frame structure in which two L-shaped suspension stays 16a and two suspension stays 16b are used and are formed in a cross beam shape. The L-shaped suspension stay 16a is provided with notches for attaching suspension bolts at both ends thereof. Further, as shown in FIG. 5B, reinforcing stays 16c are arranged on the bottom plate 35 in a lattice shape.

  A bottom base is configured by placing a bottom plate 35 formed in a box shape on the L-shaped suspension stays 16a and 16b. The bottom plate 35 also has a role of a secondary drain pan so that even if water leaks from the drain pan 27a, the fall water can be retained.

  In general, an outdoor unit of an air conditioner performs a defrosting operation in order to improve heat exchange performance due to frosting or icing on the outdoor heat exchanger 3 during heating operation. Therefore, a large amount of condensed water is generated from the outdoor heat exchanger 3 during the defrosting operation. In the case of an indoor embedded heat source machine, a drain pan 27a for holding condensed water is provided because it is installed behind the ceiling of the indoor. The drain pan 27a is inclined to improve drainage. A drain boss 27b is provided at a position where the drain pan 27a has the lowest height. At the time of installation work, the condensed water can be discharged out of the apparatus by connecting the drain hose to the drain boss 27b.

  The mounting position of the blower assembly composed of the sirocco fan 25 fixed to both the shafts of the fan casing 24 and the fan motor 26 is the downstream side of the air flow path of the outdoor heat exchanger 3. By arranging the blower assembly on the downstream side of the heat exchanger, the air velocity distribution of the air flowing into the outdoor heat exchanger 3 can be made almost uniform, so the heat exchange amount for each path of the outdoor heat exchanger 3 can be It can be made uniform. Therefore, the total heat exchange amount of the outdoor heat exchanger 3 is increased, and the cooling / heating performance is improved.

  In this embodiment, the fan assembly is integrated in order to improve the parts replacement of the fan motor 26 of the indoor embedded heat source machine, that is, so-called serviceability. As shown in FIG. 7, the blower assembly includes a sirocco fan 25, a fan casing 24, a fan motor 26, and a fan mounting plate 38 for fixing these components.

  Guide rails (not shown) are provided on the top plate and the partition plate 23 of the housing in order to enable the drawer to be integrated with the blower assembly. The blower assembly is fixed to the partition plate 23 with fastening parts such as screws. In service such as replacement of the fan motor 26, the fan assembly can be removed by removing a fastening part such as a screw and pulling out the fan assembly from the unit. Thereby, the fan motor 26 can be easily replaced. If this structure is not used, an operation such as removal of the product body is required every time the fan motor 26 is replaced.

  In the above embodiment, the indoor embedded heat source machine is divided into the suction space and the blowout space via the partition plate 23. However, since there are no components other than the electrical component box 17 in the blowout space, It is also conceivable that the casing and the electrical component box 17 are separate parts from the casing that forms the suction space. That is, it is divided into two units, a unit constituting the suction space (suction unit) and a unit constituting the blowout space (blowout unit), and the electrical box 17 is externally attached to the suction unit. As a result, all the components other than the blowout unit can be integrated into the suction unit. As a result, the indoor embedded heat source machine is substantially only the suction unit, and the blowout unit is used for blowing air from the blower. Since it is a part for constituting the flow path, the blowing unit may be freely manufactured in accordance with the situation of the installation place during the installation work. Therefore, according to the present embodiment, it is possible to reduce the size and to greatly improve the degree of freedom of installation.

  It should be noted that the indoor embedded heat source unit of the above-described embodiment is particularly useful in an area where outdoor units (heat source units) are prohibited from being installed outdoors due to landscape regulations or the like. It is also effective when there is no space for installing an outdoor unit outdoors or on a veranda, and can be placed not only on the ceiling but also on the floor or on the wall.

The arrangement block diagram shown in Example 1 of the indoor embedded type heat source machine of this invention. The refrigeration cycle system | strain diagram in Example 1 of this invention. It is a figure which shows the state which installed the heat-source apparatus shown in FIG. 1 on the ceiling, (a) is a front view at the time of hanging on a ceiling, (b) is a front view at the time of installing on a ceiling board. (A) is a figure explaining the state which connected the heat-source equipment shown in FIG. 3 with an outdoor wall opening and a duct, (b) is a figure explaining the modification of a figure. (A) is a figure which shows the structure of the bottom base in the housing | casing shown in FIG. 1, (b) is a block diagram of the baseplate installed in a bottom base. FIG. 3 is a structural diagram of a side plate in the housing shown in FIG. 1. The front view (a) and side view (b) explaining the structure of the air blower shown in FIG. The AA arrow directional view of FIG.

Explanation of symbols

1 Compressor 2 Four-way valve 3 Outdoor heat exchanger (heat exchanger for heat source)
4 Indoor heat exchanger 5 Outdoor expansion valve (expansion valve of heat source unit)
6 Indoor expansion valve 7 Sub cooler 8 Refrigerant amount regulator 9 Gas side blocking valve 10 Liquid side blocking valve 11 Solenoid valve 12 Outdoor unit 13 Indoor unit 14 Air inlet 15 Air outlet 16 Hanging stay 17 Electrical box 18 Inverter fin 19 Hanging Bolt 20 Ceiling 21 Ceiling plate 22 Air duct 23 Partition plate 24 Fan casing 25 Sirocco fan 26 Fan motor 27 Drain pan 28 Side plate for service 29 Side plate for suction outlet 30 Side plate for blowout space 31 Side plate for suction space 32 Gallery 33 Outer wall 34 Compressor Fixed plate 35 Bottom plate 36 Anti-vibration material 37 Capillary 38 Fan mounting plate

Claims (7)

A housing,
A partition plate that partitions the housing into a suction space and a blow-out space;
A suction port that is provided on the housing surface and sucks air into the suction space;
An air outlet provided on the housing surface for blowing out air from the air outlet space;
A fan that is provided on the partition plate side of the suction space and blows air from the suction space side to the blowing space;
A fan motor connected to the fan;
A horizontal compressor provided in the suction space and disposed coaxially with the rotation axis of the fan;
An indoor embedded heat source machine comprising a heat exchanger provided between the fan and the horizontal compressor. A housing,
A partition plate that partitions the housing into a suction space and a blow-out space;
A suction port that is provided on the housing surface and sucks air into the suction space;
An air outlet provided on the housing surface for blowing out air from the air outlet space;
Two centrifugal fans that are provided on the partition plate side of the suction space and blow out air from the suction space side to the blowing space;
A fan motor provided between the centrifugal fans;
A horizontal compressor provided in the suction space and disposed coaxially with the rotary shaft of the centrifugal fan;
A heat exchanger provided between the centrifugal fan and the horizontal compressor;
An indoor embedded heat source machine comprising: an electrical component box provided in the blowing space from which air is blown out from the suction space side. A housing,
A partition plate that partitions the housing into a suction space and a blow-out space;
A suction port that is provided on the housing surface and sucks air into the suction space;
A blowout port that is provided on the same housing surface as the suction port and blows out air from the blowout space;
Two centrifugal fans which are provided along the partition plate side of the suction space and blow out air to the blowing space;
A fan motor provided between the centrifugal fans;
A horizontal compressor provided in the suction space and disposed in the same direction as the rotation axis of the centrifugal fan;
A heat exchanger provided between the centrifugal fan and the horizontal compressor,
The suction port is provided in the housing surface on the suction direction side of the centrifugal fan,
One end of the heat exchanger is installed to extend to a space between the centrifugal fan and the suction port.   In Claim 2, the said suction inlet is provided in the said housing | casing surface in the suction direction side of the said centrifugal fan, and the end of the said heat exchanger is extended and installed in the space between the said centrifugal fan and the said suction inlet. An indoor embedded heat source machine.   The indoor embedded heat source unit according to claim 1 or 3, wherein an electrical component box is provided in the blowing space from which air is blown from the suction space side.   6. The indoor embedded heat source apparatus according to claim 2, further comprising an inverter that drives the horizontal compressor, wherein the inverter is provided in the electrical component box.   In any one of Claim 1 thru | or 6, The said housing | casing is comprised integrally combining the suction space side housing | casing which comprises the said suction space, and the blowing space side housing | casing which comprises the said blowing space. Features an indoor embedded heat source machine.

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