JP2010048471A - Indoor embedded type heat source machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an indoor embedded type heat source machine efficiently discharging drain water collected in a drain pan provided on a thin and compact case body. <P>SOLUTION: The indoor embedded type heat source machine is provided with the case body 18 partitioned into a suction space and a blowout space by a partitioning member 17; a suction port 10 for sucking air to the suction space; a blow out port 11 for blowing out air from the blowout space; and a fan 4 provided on the partition member side of the suction space. The indoor embedded type heat source machine is further provided with a compressor 1 provided in the suction space so that a longitudinal direction thereof is made substantially in parallel with a ceiling or the like; a heat exchanger provided between the fan 4 and the compressor 1; and the drain pan 9 having a drainage means 9a. The drain pan 9 includes heat exchanger partitioning members 2a, 2b for partitioning the drain pan 9 into an inflow side and an outflow side of air with respect to the heat exchanger. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an indoor embedded heat source machine embedded in a ceiling or the like of a building, and more particularly to an apparatus having a drain pan.

  In general, an outdoor unit (heat source unit) of an air conditioner is installed outdoors, but in recent years, an air conditioner of a type in which a heat source unit is installed indoors in a building is desired according to the landscape regulation ordinance. Therefore, it is required to be a thin and lightweight heat source device that can be installed on a ceiling or the like with a narrow gap.

  Further, the heat source device performs a defrosting operation in order to remove frost and icing on the heat exchanger during the heating operation. Therefore, drain water is generated during the defrosting operation. Since heat source equipment is usually installed outdoors, drain water was drained naturally without any special treatment. However, in the case of an indoor-embedded heat source machine, since it is installed on the indoor ceiling or the like, it is necessary to keep the drain water in the drain pan and drain it to the outside. At that time, it is also important to prevent water from leaking indoors and condensation water from falling.

  There exists a thing of patent document 1 as a prior art. In the ceiling-embedded air conditioner shown in this document, both the outdoor unit and the indoor unit are provided in the ceiling space. During heating operation, the drain water generated by the heat source side heat exchanger is led to the use side heat exchanger by the drain pipe and evaporated to humidify the room, and the drain water that has not evaporated completely is discharged to the outside by the drain pump. Is done. During cooling operation, the drain water generated by the use side heat exchanger is discharged to the outside by a drain pump.

JP 62-186142 A

However, in the structure of Patent Document 1, sufficient consideration is not given to the reduction in thickness when indoor and outdoor units are installed indoors. Further, the drain water collected in the drain pan of the outdoor unit is only guided to the indoor unit, and sufficient consideration is not given to draining the drain water reliably in any situation.
An object of the present invention is to obtain an indoor embedded heat source machine that can efficiently drain drain water accumulated in a drain pan provided in a thin and compact casing.

  In order to achieve the above object, an indoor embedded heat source machine of the present invention is installed in a building and has a casing embedded in a ceiling, a floor, or a wall surrounding an air-conditioning target environment, A partition member that partitions the housing into a suction space and a blow-out space, a suction port that sucks air into the suction space, a blow-out port that blows air from the blow-out space, and the suction member provided on the partition member side of the suction space A fan that blows air from space to the blowing space, and a compressor that is provided in the suction space and is arranged so that the longitudinal direction is substantially parallel to the embedded ceiling, floor, or wall surface A heat exchanger provided between the fan and the compressor, a drain pan provided at a lower portion of the heat exchanger and having drainage means, and an air inflow side of the drain pan to the heat exchanger Partition on the outflow side of air from the heat exchanger Characterized in that it comprises a heat-exchanger separating member.

  Another feature of the present invention is a housing that is installed in a building and is provided on a ceiling, floor, or wall surrounding the air-conditioning target environment, and a partition that partitions the housing into a suction space and an outlet space. A member, a suction port for sucking air into the suction space, a blowout port for blowing air from the blowout space, a fan provided in the suction space, a fan motor for driving the fan, and a suction motor provided in the suction space A compressor disposed in such a manner that the longitudinal direction thereof is substantially parallel to the embedded ceiling, floor, or wall surface; and a heat exchanger provided between the fan and the compressor. A drain pan provided at a lower portion of the heat exchanger, a heat exchanger partition member that partitions the drain pan into an air inflow side to the heat exchanger and an air outflow side from the heat exchanger, and the heat exchange The drain pan on the outflow side of the air from the vessel In the indoor embedded type heat source machine, characterized in that it comprises a drainage means provided.

  Moreover, the said thing WHEREIN: The said drain pan is good to provide the detection means of the retention amount of drain water.

  In the above configuration, the drain pan may include a drain pump that receives an electric signal from the detection unit and starts or stops an operation of pumping up drain water.

  Moreover, the said thing WHEREIN: The said drain pan is good to provide a heater.

  Moreover, in the above, the drain pan is preferably subjected to antibacterial treatment.

  In the above configuration, the drain pan may be disposed on an upper portion of a reinforcing member provided at a lower portion of the casing.

  According to the present invention, a housing installed in a building is partitioned into a suction space and a blow-off space by a partition member, a fan is provided on the partition member side of the suction space, and the longitudinal direction is substantially relative to an embedded ceiling or the like. The compressor is arranged in the suction space so as to be parallel to each other, the heat exchanger between the fan and the compressor, the drain pan at the bottom of the heat exchanger having the drainage means, and the drain pan for the air to the heat exchanger. Since it is configured to include a heat exchanger partition member that partitions into the inflow side and the outflow side, an indoor embedded heat source machine having a thin and compact housing structure can be obtained. Furthermore, the drain pan partitioned by the heat exchanger partition member into the air inflow side and the outflow side to the heat exchanger has a negative pressure on the air outflow side and accumulates drain water, so drain water is efficiently discharged from the drainage means. There is an effect that can be done.

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

  As shown in FIG. 1, the indoor embedded heat source apparatus according to the present embodiment has a structure in which a suction space having a suction port 10 and a blow-out space having a blow-out port 11 are divided by a partition member 17. A compressor 1, a receiver 6, a heat exchanger 2, a fan motor 3, and a fan 4 are disposed in the suction space. In addition, a four-way valve, an outdoor expansion valve, and cycle piping constituting the refrigeration cycle are also provided in the suction space, and the drain pan 9 is disposed in the lower part of the heat exchanger 2. On the other hand, an electrical component box 5 is arranged in the blowing space. For example, FIG. 1 shows a case of hanging from the ceiling.

  FIG. 2 shows a configuration diagram of the refrigeration cycle of the present embodiment. The compressor 1, the four-way valve 7, the heat exchanger 2, and the receiver 6 are connected in order, and the refrigerant is circulated to constitute a refrigeration cycle.

  The drain pan 9 of the indoor embedded heat source machine according to this embodiment is shown in FIG. When the air conditioner performs a heating operation, condensed water adheres to the heat exchanger 2. In addition, when the outside air is cold, moisture and dew condensation water that freezes on the heat exchanger freezes, so the defrosting operation is performed regularly to defrost and thaw. Therefore, a large amount of drain water is generated. Since the outdoor unit of a general air conditioner is installed outdoors, the drain water flows down. However, since the indoor embedded heat source unit is installed indoors, the drain water is once retained in the drain pan 9. However, it is essential to drain the drain water using a drain hose or the like.

  Since the heat exchanger 2 is L-shaped, the drain pan 9 is also L-shaped. Further, a drain boss (drain outlet) 9 a for drain water drainage is provided on the side surface or bottom surface of the drain pan 9. The drain boss 9a may be one place or a plurality of places. If there are multiple locations, even if one drain boss is clogged with foreign matter, it is difficult for water to leak, and it is also possible to arbitrarily change the direction of drain water discharge depending on the installation location of the housing 18 is there.

  Since drain water is stored in the drain pan 9, in the case of a drain pan made of sheet metal, it is preferable to perform rust prevention treatment, coating treatment, or the like. Moreover, when drain water remains in the drain pan 9 and a long time elapses, mold or bacteria may propagate in the drain water, and foreign matter on the slime may be generated or smell may be generated. Therefore, antibacterial treatment may be performed on the surface of the drain pan 9 in order to suppress the generation of bacteria and the like.

  The arrows in FIG. 3 indicate the flow of air flowing in from the suction port. The side from which air flows into the heat exchanger 2 is the heat exchanger primary side, and the side from which air flows out from the heat exchanger 2 is the heat exchanger 2. Called the next side. The heat exchanger primary side and the heat exchanger secondary side are partitioned by heat exchanger partition members 2a and 2b.

  A drain boss 9a for drain water provided in the drain pan 9 is arranged on the secondary side of the heat exchanger. In the case of the present embodiment, since the fan motor 3 and the fan 4 are arranged on the heat exchanger secondary side of the drain pan 9 partitioned by the heat exchanger partition members 2a and 2b, the heat exchanger secondary side operates the fan. It becomes negative pressure. Therefore, the drain water stored in the drain pan 9 rises in the water level on the secondary side of the heat exchanger due to negative pressure. Therefore, if the drain boss 9a is provided on the secondary side of the heat exchanger, the drainage of drain water is improved. When a plurality of drain bosses 9a are provided as in the present embodiment, drainage performance is improved. However, for the convenience of installation of water pipes (not shown) and maintenance, the drain bosses 9a are provided on the side of the housing 18 facing the inlet 10. And good.

  In the present embodiment, the indoor embedded heat source unit is installed so that the compressor 1 is laid on the ceiling, but this indoor embedded heat source unit is embedded in, for example, a floor or a wall. Also good. When provided on the wall, the compressor 1 is installed so as to be substantially parallel to the wall.

  When heating operation is performed when the outside temperature is low, the temperature of the heat exchanger 2 is reduced to 0 ° C. or lower, and therefore, the drain water temporarily stored in the drain pan 9 may be frozen. Usually, the temperature of the heat exchanger 2 is raised by defrosting operation to melt the ice of the heat exchanger 2 and the drain pan 9, but when the outside air is low temperature, the ice cannot be completely thawed and the remaining ice may remain. is there. When the remaining ice is left, the ice is accumulated with the passage of time, and the entire drain pan 9 is frozen and finally leaks from the drain pan 9.

  Therefore, as shown in FIG. 4, it is possible to prevent the drain pan 9 from freezing by providing a dew condensation prevention heater 14 on the bottom surface of the drain pan 9 (the side opposite to the surface where drain water is stored). The dew condensation prevention heater 14 may be energized when it falls below a predetermined temperature by a signal from a temperature sensor attached to the heat exchanger 2.

  FIG. 5 shows a drain pan according to the second embodiment of the present invention, and corresponds to a view seen from the direction of arrows AA in FIG. The drain pan 9 shown in the first embodiment is naturally drained from the drain boss 9a. Therefore, when dust accumulates in the drain pan 9 or mold is generated in the drain pan 9 and slime-like foreign matter remains, the drain boss 9a is clogged and the drainage capacity is reduced. In order to prevent water leakage from the drain pan 9 in that case, in this embodiment, as shown in FIG. 5, when the float switch 12 is attached and the drain pan 9 becomes an abnormal water level, an alarm is issued, or the outdoor unit The operation is stopped. At this time, the operation of the indoor unit is also stopped or the fan is operated.

  The float switch 12 may be fixed by the float mounting member 13. The height at which the float switch 12 is attached with respect to the lower surface of the drain pan 9 needs to be set to a height at which an alarm is issued when the water level is abnormal and the float switch 12 does not operate during normal operation. The float switch 12 may be attached to the secondary side of the heat exchanger 2.

  FIG. 6 is an example provided in the drain pan 9 provided with a drain pump 15 that pumps the drain water stored in the drain pan 9. The drain pump 15 is fixed by a drain pump mounting member 16. The drain water pumped up by the drain pump 15 is drained through a drain hose 19. The drain pump 15 may be operated by receiving a signal when the float switch 12 is operated. Moreover, the operation | movement of the drain pump 15 should just be stopped in response to the signal at the time of the float switch 12 (refer FIG. 5) releasing operation | movement. By installing the drain pump 15, the drain water can be lifted up to a lift of 700 mm, so that there is an advantage that the degree of freedom of drain drain pipe construction is expanded.

  In addition, since drain water from the heat exchanger 2 is stored in the drain pan 9, a load is applied to the drain pan 9. Therefore, as shown in FIG. 7, the drain pan 9 may be disposed above the lateral reinforcing member 8 a and the vertical reinforcing member 8 b provided on the bottom base 8 so that the drain pan 9 does not bend. A drain pan fixing stay 9b is attached to the drain pan 9, and the bottom base 8 and the drain pan 9 are fastened by screws or the like.

  When the drain water is very large, the drain water overflows from the drain pan 9 and leaks from the outdoor unit. Therefore, water can be retained by bending the four end surfaces of the bottom base 8 on the lowermost surface of the casing 18 to form a box shape. If the bottom base 8 formed in this way is used, even if water leaks or dew condensation drops from the drain pan 9, water can be retained at the bottom base 8, and the water from the indoor embedded heat source machine can be retained. It becomes possible to prevent water leakage.

The arrangement block diagram which shows Example 1 of the indoor embedded type heat source machine of this invention. FIG. 2 is a refrigeration cycle structure diagram in Embodiment 1. FIG. 2 is an arrangement configuration diagram around a drain pan shown in FIG. 1. FIG. 4 is a mounting diagram of a dew condensation prevention heater on the back surface of the drain pan shown in FIG. 3. The figure seen from the AA arrow direction of FIG. 3 at the time of attaching a float switch. The figure seen from the AA arrow direction of FIG. 3 at the time of attaching a drain pump. The figure which shows the structure of the bottom base in the housing | casing shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Compressor 2 Heat exchanger 2a, 2b Heat exchanger partition member 3 Fan motor 4 Fan 5 Electrical box 6 Receiver 7 Four-way valve 8 Bottom base 9 Drain pan 9a Drain boss (drainage means)
DESCRIPTION OF SYMBOLS 10 Inlet 11 Outlet 12 Float switch 13 Float attachment member 14 Condensation prevention heater 15 Drain pump 16 Drain pump attachment member 17 Partition member 18 Case 19 Drain hose

Claims (7)

A casing that is installed in a building and is embedded in a ceiling, floor, or wall surrounding the air-conditioning environment;
A partition member that partitions the housing into a suction space and a blow-out space;
A suction port for sucking air into the suction space;
An air outlet for blowing out air from the air outlet space;
A fan that is provided on the partition member side of the suction space and blows air from the suction space to the blowout space;
A compressor provided in the suction space and arranged so that the longitudinal direction is substantially parallel to the embedded ceiling, floor, or wall surface;
A heat exchanger provided between the fan and the compressor;
A drain pan provided at the bottom of the heat exchanger and having drainage means;
An indoor embedded heat source apparatus comprising: a heat exchanger partition member that partitions the drain pan into an air inflow side to the heat exchanger and an air outflow side from the heat exchanger. A housing that is installed in a building and is provided on a ceiling, floor, or wall surrounding the air-conditioning target environment;
A partition member that partitions the housing into a suction space and a blow-out space;
A suction port for sucking air into the suction space;
An air outlet for blowing out air from the air outlet space;
A fan provided in the suction space;
A fan motor for driving the fan;
A compressor provided in the suction space and arranged so that the longitudinal direction is substantially parallel to the embedded ceiling, floor, or wall surface;
A heat exchanger provided between the fan and the compressor;
A drain pan provided at the bottom of the heat exchanger;
A heat exchanger partition member that partitions the drain pan into an air inflow side to the heat exchanger and an air outflow side from the heat exchanger;
An indoor embedded heat source machine comprising: a drain means provided on the drain pan on an air outflow side from the heat exchanger.   3. The indoor embedded heat source apparatus according to claim 1, wherein the drain pan includes a means for detecting a retention amount of drain water.   4. The indoor embedded heat source apparatus according to claim 3, wherein the drain pan includes a drain pump that receives an electric signal from the detection means and starts or stops an operation of pumping up drain water.   5. The indoor embedded heat source apparatus according to claim 1, wherein the drain pan includes a heater.   6. The indoor embedded heat source machine according to claim 1, wherein the drain pan is subjected to antibacterial treatment.   7. The indoor embedded heat source unit according to claim 1, wherein the drain pan is disposed on an upper portion of a reinforcing member provided at a lower portion of the casing.

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