JP4961371B2 - Air conditioner heat source machine - Google Patents

Description

  The present invention relates to a heat source unit for an air conditioner in which a fan, a heat exchanger, and a compressor are arranged inside a casing and installed on the back of a ceiling inside a building.

  It is considered that the air conditioner heat source unit is installed on the back of the ceiling of the building so as not to obstruct the traffic or to obscure the cityscape. There are those described in Patent Document 1 and Patent Document 2.

  In the thing of patent document 1, the recessed part is previously provided in the building outer wall, the heat source machine of an air conditioner is installed there, and the recessed part is plugged up with a louver, and it does not become obstructive of traffic and is not conspicuous.

  In the thing of patent document 2, the heat source machine of an air conditioner is embed | buried under the ceiling directly above a building eaves ceiling, an air inlet and a blower outlet are provided in the eaves ceiling surface, or an outdoor unit (heat source machine) is installed in a ceiling back Installation is described, and these make the heat source machine not obstructing traffic or the like, and making it inconspicuous.

JP 2000-54530 A Japanese Patent No. 3694518

  In the case of a heat source unit for an air conditioner for a store, generally, it is often placed in the vicinity of the wall surface of the building or between the building and the building. Therefore, it is necessary to secure a space for placing the heat source machine, but placing the heat source machine may obstruct traffic.

  In addition, in order to protect the scenery of historic towns and other places, restrictions such as height restrictions on buildings and the prohibition of electrical signboards have increased, and air conditioners installed outside buildings or on rooftops have increased. It has been desired to install a heat source device (outdoor unit) inconspicuously.

  In order to solve the above-mentioned problems, when the above-mentioned patent document is adopted, there are the following problems. That is, in the case where a recess is provided on the building outer wall as in Patent Document 1, it is necessary to provide a special recess for installing a heat source device in the building, and when adopting an existing building, a recess is provided in the building. A major remodeling is required.

  Further, in the case where a heat source machine is embedded in the ceiling under the eaves as in Patent Document 2, the building requires a eaves (veranda), and a general office building does not have an eaves, and thus cannot be adopted. The ceiling-mounted type that supplies and exhausts air through a duct requires an expensive and large fan, and there is often not enough space behind the ceiling, making it difficult to install a large heat source unit There was also a problem that no consideration was given to maintenance work.

  An object of the present invention is to obtain a heat source machine for an air conditioner that can be easily installed on the back of a ceiling by using a small and compact heat source machine.

  Another object of the present invention is to provide a heat source unit for an air conditioner that can be easily maintained even when installed on the back of a ceiling.

  In order to solve the above-described problems, the present invention provides a heat source device for an air conditioner in which a fan, a heat exchanger, and a compressor are disposed inside a casing, and outdoor air is passed through the heat exchanger to exchange heat. The heat source unit is installed behind the ceiling inside the building, and a suction port for supplying air to the heat source unit and a blower outlet for exhausting air from the heat source unit are provided in the housing. The mouth and the air outlet are connected to an opening formed in the outer wall of the building, the fan is installed on the air outlet side inside the housing, and the compressor is connected to the air outlet inside the housing. Is installed on the opposite side, and the heat exchanger is installed between the fan and the compressor.

  Here, it is preferable that the air inlet and the air outlet of the heat source device are provided on one surface of the casing, and the one surface is located on the outer wall surface of the building. Moreover, it is preferable that the heat exchanger installed in the heat source unit housing is disposed on the suction side of the fan. Furthermore, if the heat exchanger installed inside the heat source unit housing is installed in a U shape or an L shape so as to surround the fan, the heat transfer area of the heat exchanger can be increased.

  Air intake ports of the heat source unit are respectively provided on both ends of the entire surface of the housing, and the air outlet is arranged between the air intake ports, and air (outside air) is supplied and exhausted while reducing the vertical direction. The mouth area can be increased. Moreover, the height of a heat-source device can be restrained low by making the said compressor into a horizontal scroll compressor. In addition to the compressor, an electric box and a cylindrical tank receiver are arranged along the heat exchanger in the casing on the upstream side of the heat exchanger. In addition, it is possible to easily maintain the compressor and electric parts from the rear side of the housing of the heat source device.

  The fan is a double-suction type multi-blade fan, and two double-suction multi-blade fans are installed along the heat exchanger, and a double-shaft type is provided between the two double-suction multi-blade fans. If the two-shaft motors are used to drive the two multi-blade fans, the height of the fans can be kept low and a large air volume can be obtained. Thin and compact enough to be installed on the back. Further, when the double-shaft motor is arranged near the longitudinal center of the casing, and the receiver is also arranged near the longitudinal center of the casing, a compressor or an electric circuit is formed by suction air. Not only can the box be cooled, but a cylindrical tank receiver can serve as a guide for the intake air and can smoothly guide the intake air from the heat exchanger to the fan intake side.

  According to the present invention, the fan is installed on the air outlet side inside the housing, the compressor is installed on the side opposite to the air outlet inside the housing, and the heat exchanger further includes the fan and the compressor. The heat source unit of the air conditioner is configured so as to be installed between the air conditioner, so that it can be a compact and compact heat source unit and can be easily installed on the ceiling inside the building. You can get a chance.

  Also, the air inlet and outlet of the heat source unit are provided on one side of the casing, and the one side is positioned so as to be located on the outer wall of the building, and the compressor and the electric box are positioned on the inner side of the casing. Thus, even if the heat source device is installed behind the ceiling, an effect is obtained that maintenance of the compressor, electrical parts, and the like can be easily performed from the inside of the building.

  The present invention is a heat source unit of an air conditioner in which a fan, a heat exchanger, a compressor, and the like are arranged inside a casing and heat is exchanged by passing air through the heat exchanger, wherein the heat source unit is a building It is installed in the pocket behind the internal ceiling or suspended from the ceiling. Here, the back of the ceiling is a space provided between the lower room and the upper room, and is used as including the under floor of the upper room in addition to the back of the ceiling.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a side sectional view showing a heat source unit of an air conditioner according to a first embodiment installed in a ceiling back (ceiling wall) 105 inside the building 1, and FIG. 2 is a plan view of the heat source unit shown in FIG. .

  As shown in FIG. 1, a fan 102, a heat exchanger 103, a compressor 114 (see FIG. 2) and the like are arranged inside the housing 101 of the heat source device 2. Although this heat source machine 2 has shown the example installed in the building interior ceiling back 105, when there is no ceiling board, it may be suspended and installed in the ceiling (or under the floor). In addition, an opening (suction port and outlet) 108 for supplying and exhausting air to and from the heat source unit is formed in the building outer wall 107 in the portion where the heat source unit 2 is installed. The suction port 115 and the air outlet 116 provided in the housing 101 of the heat source machine are formed on the side of the opening (suction port and air outlet) 108 formed on the outer wall of the building. In this embodiment, the openings of the suction port 115 and the air outlet 116 formed in the housing 101 are configured to coincide with the opening 108 formed in the building, that is, to be positioned on the outer wall portion of the building. The fan 102 is installed on the suction port 115 and air outlet 116 side (front side) inside the housing 101, and the compressor 114 is installed on the opposite side (back side) of the air suction port and air outlet inside the housing 101. The heat exchanger is installed between the fan and the compressor, and is located on the suction side (upstream side) of the fan.

  The air inlets 115 are provided on both ends of the one surface (front side) of the casing, the outlet 116 is disposed between the inlets 115, and all the inlets and outlets are provided on the casing. It is formed on one side (front side). In addition to the compressor 114, an electric box 112 and a cylindrical tank-shaped receiver 113 are arranged along the heat exchanger 103 in the casing on the back side of the heat exchanger 103 as shown in FIG. It is installed. Note that a horizontal scroll compressor is used as the compressor 11 so that the height of the heat source device does not increase due to the height of the compressor.

  The fan 102 uses a double-suction type multi-blade fan. Two double-suction multi-blade fans 102 are installed along the heat exchanger 103, and the two double-suction multi-blade fans are installed. A double-shaft motor 111 is installed between the two multi-blade fans 111, and the two multi-blade fans are driven by the double-shaft motor 111. The diameter of the fan 102 greatly affects the height of the heat source unit 2. By configuring the fan as in this embodiment, it is possible to obtain a large air volume while keeping the height of the fan low. It becomes possible to make the heat source machine thin and compact to such an extent that it can be installed behind the ceiling.

  The biaxial motor 111 is arranged near the central portion in the longitudinal direction of the casing 101, and the receiver 113 is also arranged near the central portion in the longitudinal direction of the casing. With this configuration, not only can the compressor 114 and the electric box 112 be cooled by the intake air, but also the cylindrical tank receiver 113 serves as a guide for the intake air, and smoothly guides the air from the heat exchanger to the fan intake side. be able to.

  In the figure, 104 is the indoor ceiling, 106 is the indoor space, and 121 is the front of the heat source unit. Reference numeral 131 denotes an arrow indicating the flow of air passing through the heat source unit. In general, in the case of a heat source unit of an air conditioner installed in the pocket of the ceiling 105, a case where air is supplied and exhausted by connecting the inlet 115 and the outlet 116 of the heat source unit and the opening 108 provided on the outer wall of the building with a duct. However, in this embodiment, it is only necessary to connect the inlet and outlet of the heat source machine directly to the opening 108 on the outer wall of the building as shown in FIG. 1 by providing the inlet and outlet in front of the heat source machine. In addition to eliminating the need for a duct, it is possible to reduce the flow path loss for air supply and exhaust, and to reduce the size of the fan accordingly.

  In order to save energy in the air conditioner, the heat exchange performance can be improved by increasing the heat transfer area of the heat exchanger and making the air velocity distribution of the air passing through the heat exchanger uniform. In order to make the air velocity distribution of the air passing through the heat exchanger uniform, this embodiment is realized by arranging a heat exchanger on the fan suction side. However, in order to increase the heat transfer area of the heat exchanger, it is possible to increase the size of the heat source unit, but since the heat source unit is installed behind the ceiling, the space behind the ceiling is considerably limited. Is done. For this reason, since the height and plane dimension of a heat source machine cannot be enlarged, the example for enlarging a heat exchanger area with a limited housing | casing dimension is shown in FIG.3 and FIG.4. In these drawings, the portions denoted by the same reference numerals as those in FIGS. 1 and 2 indicate the same or corresponding portions.

  In the example shown in FIG. 3, the heat exchanger 103 installed in the heat source unit is installed on the suction side of the fan 102 and is configured in an L shape (L shape) so as to surround the fan. Thereby, compared with the example shown in FIG. 2, the heat transfer area of the heat exchanger can be increased even in a case of the same size.

  In the example of FIG. 4, the heat exchanger 103 is installed on the suction side of the fan 102 and is installed in a U shape (a U shape) so as to surround the fan. In this example, the heat transfer area of the heat exchanger can be further increased with the same housing as in the examples shown in FIGS.

  In addition, in the said Example, while providing the air inlet 115 and the blower outlet 116 of a heat source machine in the heat source machine front 121, the said suction inlet 115 is each provided in the both ends of the heat source machine housing front, and the said blower outlet is provided. 116 is disposed at a position sandwiched between the suction ports, and the heat exchanger 103 is disposed on the suction side of the fan 102, so that the heat exchanger is compared with the case where the heat exchanger is disposed on the blowout side of the fan. The wind speed distribution of the vessel can be made more uniform. In other words, since the air suction ports 115 are provided at two locations at both ends on the front side in total, the wind speed distribution passing through the heat exchanger can be made more uniform. When only one suction port is provided, the non-uniformity of the wind speed distribution in the heat exchanger becomes large at a portion far from the suction port and a portion close to the suction port.

According to the present embodiment described above, the following effects are obtained.
(1) A heat source unit of an air conditioner that exchanges heat with the air outside the building is installed behind the ceiling of the building, and an air inlet and outlet for supplying and exhausting air to the heat source unit are provided on the outer wall of the building, that is, the inlet port Since the air outlet and the air outlet are provided on the same surface of the outer wall of the building, the heat source machine that exchanges heat with the outside air can be installed inconspicuously, and it is possible to prevent the scenery of the town and the building from being damaged. Moreover, since the air inlet and the air outlet of the heat source device are provided on one surface (front surface) of the housing, the heat source device can be installed in the building without a duct.
(2) Since the heat exchanger installed in the heat source unit is arranged on the suction side of the fan, the wind speed distribution of the heat exchanger can be made uniform, and energy saving can be achieved accordingly. In addition, by installing the heat exchanger on the suction side of the fan and surrounding the fan, the heat transfer area of the heat exchanger can be increased without enlarging the housing, thereby further saving energy. Can be planned.
(3) Since the outside air suction port is provided on one side (front surface) of the heat source unit housing and both ends thereof, and the air outlet is disposed between the suction ports, the wind speed of the heat exchanger Distribution can be made more uniform and energy savings can be achieved.

The side sectional view showing the example of the heat source machine of the air harmony machine of the present invention. The top view of the heat source machine shown in FIG. The figure which shows the other example of a heat source machine, and corresponds to FIG. The figure which shows the further another example of a heat source machine, and is equivalent to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 2 Heat source machine 101 Case 102 of heat source machine Fan (Double suction type multi-blade fan)
103 Heat exchanger 104 Indoor ceiling 105 Ceiling back 106 Indoor space 107 Building outer wall 108 Opening (suction port, outlet)
111 motor (double-axis motor)
112 Electric box 113 Receiver 114 Compressor (Horizontal scroll compressor)
115 Inlet 116 Outlet 121 Front of Heat Source Machine 122 Rear of Heat Source Machine 131 Flow of Air Passing Inside Heat Source Machine

Claims (5)

In a heat source unit of an air conditioner, in which a fan, a heat exchanger, and a compressor are arranged inside a housing, and outdoor air is passed through the heat exchanger to exchange heat,
The heat source unit is installed behind the ceiling inside the building, and inlets for supplying air to the heat source unit are provided at both ends of one surface of the housing, respectively , and a blower for exhausting from the heat source unit. outlet is provided between the two air outlet in one face the same surface on which the suction port is provided, these inlet and outlet is a intended to be connected to the opening formed in the building outer wall,
The fan is installed on the outlet side inside the housing,
The compressor is a horizontal type along the heat exchanger, and is installed on the opposite side of the heat exchanger from the air outlet inside the housing .
Before Stories heat exchanger, the disposed along the longitudinal direction of the housing on the suction side of the fan between the fan and the compressor,
An electric box is installed on the upstream side of the heat exchanger along the heat exchanger, and
The air supplied from the respective suction ports on both ends is configured to flow to the central portion in the longitudinal direction of the casing, to the heat exchanger, and then to be exhausted from the outlet. Air conditioner heat source machine. In claim 1 ,
Before Stories heat exchanger heat source unit of an air conditioner which is characterized in that it is installed in the U-shape so as to surround the fan or L-shaped. In claim 1 or 2,
In addition to the compressor, a cylindrical tank-shaped receiver is disposed along the heat exchanger in the casing on the upstream side of the heat exchanger. Machine. In claim 3,
The fan is a double-suction type multi-blade fan, and two double-suction multi-blade fans are installed along the heat exchanger, and a double-shaft type is provided between the two double-suction multi-blade fans. A heat source unit for an air conditioner, wherein the two multi-blade fans are driven by the double-shaft motor. In claim 4,
The heat source unit for an air conditioner characterized in that the biaxial motor is disposed in the vicinity of the central portion in the longitudinal direction of the casing, and the receiver is also disposed in the vicinity of the central portion in the longitudinal direction of the casing.

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