JP2010065967A - Heat source machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat source machine for preventing deterioration of device reliability. <P>SOLUTION: The heat source machine 1 includes a casing 2, a division plate 3 vertically dividing an interior of the casing 2 into a heat exchange chamber H1 and a machine chamber H2 and having a chevron protruding part 8 protruding to a heat exchange chamber H1 side, a heat exchanger 4 and a blower 5 disposed in the heat exchange chamber H1, a compressor 6 and a controller 7 disposed in the machine chamber H2, and a storage vessel 9 mounted on the protruding part 8 and storing a coolant. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heat source machine, for example, a heat source machine used as an outdoor unit of an air conditioner.

  As an outdoor unit for an air conditioner, for example, an outdoor unit for a medium-sized air conditioner for a medium-sized building such as a building has been developed. In this outdoor unit, the inside of the housing is divided into upper and lower parts by a horizontal dividing plate, the upper part is a heat exchange chamber in which a heat exchanger and a blower are arranged, and the lower part is a machine room in which a compressor and electrical components are arranged.

  The machine room has a substantially sealed structure so that the operating noise of the compressor does not leak as much as possible. For this reason, there is almost no air flow in the machine room, the electrical components generate heat and the temperature rises extremely, and the electrical components have a thermal adverse effect such as failure.

Therefore, various cooling structures for cooling the electrical components are employed. For example, as a cooling structure, a cooling duct that communicates an opening formed in the horizontal partition plate and an opening formed in the lower surface of the machine room is provided, and a heat sink fixed to the back surface of the electrical component is placed in the cooling duct. The cooling structure to expose is employ | adopted (for example, refer patent document 1). Thereby, the heat sink is cooled by the outside air passing through the cooling duct, and the electrical component is prevented from being heated to a high temperature.
International Publication No. 2005/031219 Pamphlet

  However, in a heat source device such as the outdoor unit described above, the drain water on the horizontal partition plate freezes and grows in a cold region, and the heat exchanger is damaged and the cooling duct is clogged with ice. The reliability of the device will be reduced.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a heat source machine capable of preventing a reduction in apparatus reliability.

  A feature according to the embodiment of the present invention is that in the heat source machine, a housing, a section having a mountain-shaped projecting portion projecting to the heat exchange chamber side, the housing being partitioned into a heat exchange chamber and a machine chamber vertically A plate, a heat exchanger and a blower arranged in the heat exchange chamber, a compressor and a control device arranged in the machine room, and a storage container which is placed on the protrusion and stores the refrigerant.

  According to the present invention, it is possible to prevent a decrease in device reliability.

  An embodiment of the present invention will be described with reference to the drawings. In addition, the outdoor unit 1 of an air conditioner is demonstrated as a heat source apparatus which concerns on embodiment of this invention.

  As shown in FIG. 1, the outdoor unit 1 according to the embodiment of the present invention includes a housing 2, a partition plate 3 that divides the housing 2 into a heat exchange chamber H <b> 1 and a machine chamber H <b> 2 up and down, A heat exchanger 4 and a blower 5 disposed in the exchange chamber H1 and a compressor 6 and a control device 7 disposed in the machine chamber H2 are provided.

  The sorting plate 3 is provided horizontally at a substantially intermediate portion in the vertical direction of the housing 2, and forms a heat exchange chamber H <b> 1 on the upper side of the housing 2 and forms a machine chamber H <b> 2 on the lower side thereof. The partition plate 3 is formed with a mountain-shaped protrusion 8 protruding toward the heat exchange chamber H <b> 1, and a storage container 9 for storing the refrigerant is placed on the protrusion 8.

  As shown in FIGS. 2 to 4, the storage container 9 is formed in a long cylindrical shape, and is horizontally placed on the upper portion of the projecting portion 8 so that the longitudinal direction is horizontal. This storage container 9 is usually called a liquid tank. The upper surface of the protruding portion 8 is formed in a concave shape in accordance with the shape of the storage container 9, and the surface of the storage container 9 on the machine room H <b> 2 side is in close contact with the protruding portion 8.

  Two refrigerant pipes 10 through which the refrigerant passes are connected to the surface of the storage container 9 on the machine room H2 side. These refrigerant pipes 10 are connected to the lower surface of the storage container 9 through the protrusion 8 from the machine room H2 side. In addition, the other end of each refrigerant | coolant piping 10 is connected to the other piping connected to the compressor 6 in the machine room H2.

  In the heat exchange chamber H1, the heat exchanger 4 is arranged on the sorting plate 3 so as to surround the protruding portion 8 along the surface wall of the heat exchange chamber H1. The blower 5 is provided at the upper center of the heat exchange chamber H1. By the operation of the blower 5, outside air flows through the heat exchanger 4 and is guided into the heat exchange chamber H <b> 1, and then a ventilation path that is discharged from the blower 5 to the outside is formed.

  In the machine room H2, in addition to the compressor 6, an accumulator 11, valves, piping, and the like are provided. The compressor 6 communicates with the heat exchanger 4 and the storage container 9 via valves and piping so as to form a refrigeration cycle, and is connected to a heat exchanger provided in the indoor unit of the air conditioner. Further, the machine room H2 is provided with a cooling duct 12 that communicates the opening 3a formed in the sorting plate 3 with the opening formed in the bottom surface of the machine room H2.

  The cooling duct 12 is a duct for taking in outside air that cools the control device 7. The control device 7 includes electrical parts for controlling each part such as the blower 5, the compressor 6, and valves (for example, including an inverter circuit having a large amount of heat generation), a heat sink fixed to the back surface of the electrical parts, It consists of an electrical component box with built-in.

  At least a part of the heat sink is exposed in the cooling duct 12. As a result, the heat sink is cooled by the outside air passing through the cooling duct 12, and the electrical component is prevented from being heated to a high temperature. As the heat sink, for example, a plurality of cooling fins made of a material excellent in heat dissipation such as aluminum is used.

  Next, the air conditioning operation of the outdoor unit 1 will be described. In addition to the above-described outdoor unit 1 provided outside, an air conditioner is configured by an indoor unit that is provided inside a medium-sized building such as a building and adjusts indoor air. This air conditioner blows any one of cold air, air blowing, and warm air into the room according to various operation modes, and adjusts the indoor air temperature, air circulation, and the like.

  The outdoor unit 1 performs an air conditioning operation in cooperation with the indoor unit by driving the blower 5 and the compressor 6. The refrigerant discharged from the compressor 6 or the refrigerant returning to the compressor 6 is heat-exchanged by the heat exchanger 4 by the operation of the outdoor unit 1. Specifically, when an operation command signal is input to the outdoor unit 1, the compressor 6 is driven, and the refrigerant is guided to the heat exchanger 4, the storage container 9, piping, and the indoor unit heat exchanger, and the refrigeration cycle is performed. Done. At the same time, the blower 5 is also driven, and the outside air is sucked into the heat exchange chamber H1. The sucked outside air flows through the heat exchanger 4 to exchange heat, and is further exhausted to the outside through the blower 5.

  By driving the blower 5, the heat exchange chamber H <b> 1 has a negative pressure, and the influence reaches the cooling duct 12 communicating with the heat exchange chamber H <b> 1, and the cooling duct 12 also has a negative pressure. As a result, outside air is sucked from the opening at the bottom of the cooling duct 12, flows through the cooling duct 12, and is led out from the opening 3 a of the partition plate 3 to the heat exchange chamber H <b> 1.

  At this time, the outside air contacts the heat sink of the control device 7 in the course of flowing through the cooling duct 12, and exchanges heat with each other. The heat transmitted from the electrical component to the heat sink is dissipated from the outside air, and the electrical component is cooled together with the heat sink. Thereby, the heat | fever of an electrical component is prevented from being discharge | released inside the control apparatus 7 or the inside of the machine room H2, and those temperature rises are suppressed.

  In such an outdoor unit 1, even when the cooling duct 12 is clogged with ice and drain water is accumulated, the storage container 9 is placed on the protruding portion 8 protruding to the heat exchange chamber H1 side. 9 is not immersed in drain water, and the storage container 9 is not damaged by rusting. Furthermore, since the heat of the storage container 9 is transmitted to the protruding portion 8 and the dividing plate 3, the drain water on the dividing plate 3 becomes difficult to freeze, and the drain water on the dividing plate 3 is suppressed from freezing and growing. Damage to the heat exchanger 4 due to freezing and growth of drain water is prevented.

  Further, since the protruding portion 8 is formed in a mountain shape protruding toward the heat exchange chamber H1, a space K (see FIGS. 3 and 4) is generated on the machine chamber H2 side, and therefore connected to the lower surface of the storage container 9. It becomes easy to perform a brazing operation (welding operation) for connecting other pipes to each refrigerant pipe 10 that has been made. Further, since the upper surface of the protruding portion 8 is formed in accordance with the shape of the storage container 9, the lower surface of the storage container 9 is completely in close contact with the protruding portion 8, so that the heat of the storage container 9 is transmitted to the sorting plate 3. The drain water on the dividing plate 3 is reliably suppressed from freezing and growing.

  As described above, according to the embodiment of the present invention, the mountain-shaped protruding portion 8 protruding to the heat exchange chamber H1 side is formed on the partition plate 3, and the storage container 9 is placed on the protruding portion 8. By doing so, the storage container 9 is not immersed in the drain water accumulated on the sorting plate 3, and the storage container 9 is not damaged by being rusted. It is transmitted to the board 3, and it is suppressed that the drain water on the division board 3 freezes and grows. Thereby, in the cold district, damage to the storage container 9 due to the cooling duct 12 being clogged with ice and damage to the heat exchanger 4 due to freezing and growth of drain water on the partition plate 3 are suppressed. Therefore, it is possible to prevent a decrease in device reliability.

  Further, the storage container 9 is formed in a long shape and is placed on the protruding portion 8 so that the longitudinal direction is horizontal, and each refrigerant pipe 10 protrudes from the surface of the storage container 9 on the machine room H2 side. Since the space K is formed on the machine room H2 side and the refrigerant pipes 10 are present in the space K, other pipes are connected to the refrigerant pipes 10 because they are connected through the portion 8. It becomes easy to perform the brazing work to connect, and work efficiency can be improved.

  Furthermore, when each refrigerant pipe 10 is connected to the upper surface of the storage container 9, it is necessary to draw each refrigerant pipe 10 to the corner of the heat exchange chamber H1 in order to draw each refrigerant pipe 10 to the machine room H2 side. According to the embodiment, since each refrigerant pipe 10 is connected to the lower surface of the storage container 9, it is not necessary to perform the above-described piping work, and the work efficiency can be improved. In addition, the pipe route is shortened. can do.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, some components may be deleted from all the components shown in the above-described embodiment. Furthermore, you may combine the component covering different embodiment suitably. Moreover, in the above-mentioned embodiment, although various numerical values are mentioned, those numerical values are illustrations and are not limited.

It is a perspective view which shows roughly the outdoor unit of an air conditioner as a heat source machine which concerns on one Embodiment of this invention. It is a top view which shows a part of outdoor unit shown in FIG. It is the sectional view on the AA line of FIG. FIG. 3 is a sectional view taken along line B-B in FIG. 2.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Heat source machine (outdoor unit), 2 ... Housing, 3 ... Partition plate, 4 ... Heat exchanger, 5 ... Blower, 6 ... Compressor, 7 ... Control device, 8 ... Projection part, 9 ... Storage container, 10 ... refrigerant piping, H1 ... heat exchange chamber, H2 ... machine room

Claims (2)

A housing,
A partition plate having a mountain-shaped projecting portion projecting to the heat exchange chamber side, and dividing the inside of the housing vertically into a heat exchange chamber and a machine chamber;
A heat exchanger and a blower disposed in the heat exchange chamber;
A compressor and a control device disposed in the machine room;
A storage container placed on the protrusion and storing a refrigerant;
A heat source machine comprising:   The storage container is formed in an elongated shape and is placed on the protrusion so that the longitudinal direction is horizontal, and a refrigerant pipe through which a refrigerant passes is provided on the surface of the storage container on the machine room side. The heat source apparatus according to claim 1, wherein the heat source apparatus is connected through the protruding portion.

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