JP4640296B2 - Air conditioning unit - Google Patents

Description

The present invention relates to an air conditioning unit that performs heat exchange inhale air.

  Conventionally, in an air conditioning unit of an air conditioner, for example, an outdoor unit, a heat exchanger is disposed so as to be substantially V-shaped in a side view, and air is sucked in from the front side or bottom side of the outdoor unit and exhausted from the upper side. Some perform heat exchange.

Among such outdoor units, for example, there is an outdoor unit of an air conditioner dedicated to cooling used for temperature management of a computer room as disclosed in Patent Document 1.
JP 7-190460 A (published July 28, 1995)

  However, the outdoor unit of the conventional air conditioner has the following problems.

  That is, when air is sucked in from the front side of the outdoor unit and exhausted from the upper side, heat exchange arranged on the front side among the heat exchange parts of the heat exchanger arranged so as to be substantially V-shaped in side view The air flow to the heat exchange section on the back side is blocked by the section. In addition, although air flows through the heat exchanger disposed on the back side through the lower side of the heat exchanger disposed in the substantially V shape, the amount is small. Therefore, the supply amount of the air supplied to the heat exchange unit arranged on the back side is insufficient. For this reason, in the heat exchange part arrange | positioned at the back side, there existed a problem that the efficiency of the heat exchange between refrigerant | coolants, such as fluorocarbon, and the air which passes through the circumference fell.

The subject of this invention is providing the air-conditioning unit which can improve the efficiency of heat exchange rather than before.

The air conditioning unit according to the first invention includes a heat exchanger, a casing, and a partition plate, and a first ventilation path is formed . The heat exchanger has a first heat exchange part and a second heat exchange part arranged on the back side of the first heat exchange part, and the front side of the first heat exchange part and the back side of the second heat exchange part. When air passes from the side to the first space sandwiched between the first heat exchange unit and the second heat exchange unit, heat exchange is performed between the refrigerant flowing in the interior and the air. The casing has at least a side part, a back part, a front part, and a ceiling part. In this casing, an air suction port is formed only in the front portion, an opening for exhaust is formed only in the ceiling portion, and the heat exchanger is stored. The partition plate is disposed so as to partition a space near the side end of the first heat exchange unit and the side end of the second heat exchange unit into a first space side and a side surface side. The first ventilation path communicates the air suction port, the space between the side surface portion and the partition plate, and the second space between the second heat exchange portion and the back surface portion. The air conditioning unit includes an outdoor unit and an indoor unit of the air conditioner.

Here, it is possible to increase the flow rate of air supplied through the second space by the first air passage to the second heat exchange unit. Therefore, in the second heat exchange unit, the efficiency of heat exchange between the refrigerant and the air can be increased .

An air conditioning unit according to a second aspect of the present invention is the air conditioning unit according to the first aspect of the present invention, wherein the side surface portion is composed of a left side surface portion and a right side surface portion located on both the left and right sides in front view. The first ventilation path is formed between the first space and the left side surface and between the first space and the right side surface.

  Thereby, the air sucked from the air suction port is passed through the second space from the first ventilation path formed between the first space and the left side surface portion 43b and between the first space and the right side surface portion 43a. More can be supplied to the second heat exchange section.

  For this reason, the efficiency of the heat exchange between the refrigerant | coolant and air in a 2nd heat exchange part can be improved more.

An air conditioning unit according to a third aspect of the present invention is the air conditioning unit according to any one of the first or second aspects, wherein the first heat exchange part and the second heat exchange part are substantially V-shaped in a side view. Is arranged.

  Thereby, for example, in the side view, the length of each heat exchange part in the substantially vertical direction compared to the case where each heat exchange part (first heat exchange part, second heat exchange part) is arranged substantially vertically, respectively. Can be made longer to increase the heat transfer area.

  For this reason, the efficiency of heat exchange in each heat exchange part can be further improved.

An air conditioning unit according to a fourth aspect of the present invention is the air conditioning unit according to any one of the first to third aspects of the present invention, wherein the second space is aired below the first heat exchange unit and the second heat exchange unit. A second ventilation path that communicates with the suction port is formed.

  Thereby, air can be supplied from the air suction port to the second heat exchange section via the second ventilation path. For this reason, the flow volume of the air supplied with respect to a 2nd heat exchange part can further be increased.

  As a result, the efficiency of heat exchange between the refrigerant and the air can be further improved in the second heat exchange section.

An air conditioning unit according to a fifth invention is the air conditioning unit according to any one of the first to fourth inventions, and is disposed in a third space formed between the first heat exchange part and the front part. The refrigerant device is further provided.

  Here, the refrigerant device includes at least one of a receiver (liquid receiver), a valve such as a closing valve, and a switch box.

  Thereby, for example, when the first heat exchange part and the second heat exchange part are arranged in a substantially V shape in a side view, the third formed between the front part and the first heat exchange part. A refrigerant device such as a receiver can be arranged in a space, that is, a space that is substantially triangular in a side view. Then, the air sucked from the suction port can be supplied to the first heat exchange unit and the second heat exchange unit on the downstream side by circulating around the refrigerant equipment such as the receiver and the switch box.

  For this reason, the increase in the suction resistance generated by providing the refrigerant device can be suppressed, and the decrease in the flow rate of the air supplied to the first heat exchange unit and the second heat exchange unit on the downstream side can be suppressed.

Air conditioning unit according to a sixth aspect of the present invention, the first and the air conditioning unit according to any one of the fifth invention, the air conditioning unit is the outdoor unit of the air conditioner.

  Thereby, in the outdoor unit (hereinafter referred to as the outdoor unit) of the air conditioner, the same effect as that of the air conditioning unit according to the invention can be obtained.

  For this reason, in the outdoor unit, the flow rate of air supplied to the second heat exchange unit can be increased.

  As a result, the efficiency of heat exchange in the outdoor unit of the air conditioner can be improved.

According to the air conditioning unit according to the first invention, the efficiency of heat exchange between the refrigerant and the air in the second heat exchange section can be improved.

According to the air conditioning unit according to the second invention, the efficiency of heat exchange between the refrigerant and the air in the second heat exchange section can be further improved.

According to the air conditioning unit according to the third aspect of the present invention, the efficiency of heat exchange in each heat exchange section can be further improved.

According to the air conditioning unit according to the fourth aspect of the present invention, the efficiency of heat exchange between the refrigerant and the air can be further improved in the second heat exchange section.

According to the air conditioning unit according to the fifth aspect of the invention, the increase in the suction resistance generated by providing the refrigerant device is suppressed, and the flow rate of the air supplied to the first heat exchange section and the second heat exchange section on the downstream side is reduced. Can be suppressed.

According to the outdoor unit of the air conditioner according to the sixth aspect of the invention, the efficiency of heat exchange in the outdoor unit of the air conditioner can be improved.

  An air conditioner 1 including an outdoor unit (an air conditioning unit, an outdoor unit of an air conditioner) 2 according to an embodiment of the present invention will be described as follows with reference to FIGS.

<Configuration of the entire air conditioner 1>
The air conditioner 1 has two refrigerant circuits as shown in FIG. 1, and is an air conditioner dedicated to cooling used for air conditioning in a computer room.

  As shown in FIG. 1, the air conditioner 1 includes two systems of substantially the same refrigerant circuit, and includes an outdoor unit 2 arranged outdoors and an indoor unit 3 arranged in a computer room.

  The outdoor unit 2 cools and liquefies the refrigerant gas outdoors by exchanging heat between the refrigerant gas such as fluorocarbon gas circulating through each refrigerant circuit and the outside air (air) sucked inside. (The outdoor unit 2 will be described in detail later.)

  The indoor unit 3 includes a compressor 11, an expansion valve 15, an evaporator 16, a refrigerant gas pipe 30, a refrigerant liquid pipe 35, and a fan 17 in each refrigerant circuit. The air in the computer room is kept at a predetermined set room temperature using the heat of vaporization of the refrigerant liquid that has undergone heat exchange in step (b).

  Here, the refrigerant circulation path will be described as follows, taking one refrigerant circuit of the two refrigerant circuits of the air conditioner 1 as an example. (The upstream side and the downstream side described below mean the upstream side and the downstream side of the refrigerant flow in the refrigerant circuit.)

  In the indoor unit 3, the compressor 11 compresses the low-pressure refrigerant gas supplied from the upstream-side refrigerant gas pipe 30 to produce a high-temperature / high-pressure refrigerant gas and supplies the refrigerant gas communication pipe to the downstream outdoor unit 2. 31 to supply.

  The gas side shut-off valve (refrigerant device) 12 is attached to the most upstream side refrigerant gas pipe 32 in the outdoor unit 2 and is held in an open state. For this reason, the high-temperature and high-pressure gas supplied from the upstream refrigerant gas communication pipe 31 can be supplied to the downstream condenser 20 via the refrigerant gas pipe 32. (The gas side shut-off valve 12 will be described in detail later.)

  The condenser (heat exchanger) 20 is disposed on the downstream side of the gas-side shutoff valve 12 and cools the high-temperature and high-pressure refrigerant gas supplied from the upstream-side refrigerant gas pipe 32 by heat exchange with air. . The refrigerant gas is liquefied and supplied as a high-temperature and high-pressure refrigerant liquid to the downstream side via the refrigerant liquid pipe 33.

  The receiver tank (refrigerant device) 13 temporarily stores the refrigerant liquefied in the upstream condenser 20, and separates the gaseous refrigerant mixed in the refrigerant liquid supplied from the upstream side downstream. Only the refrigerant liquid is supplied to the refrigerant liquid pipe 33 on the side. Thereby, it is possible to prevent the refrigerant gas from being mixed into the refrigerant liquid supplied to the refrigerant liquid pipe 33 on the downstream side.

  The liquid side shut-off valve (refrigerant device) 14 is attached to the refrigerant liquid pipe 33 on the most downstream side in the outdoor unit 2 and is held in an open state. For this reason, the refrigerant liquid supplied from the receiver tank 13 on the upstream side can be supplied to the indoor unit 3 on the downstream side via the refrigerant liquid communication pipe 34.

  Note that the gas-side closing valve 12 and the liquid-side closing valve 14 are held in a closed state so that the refrigerant contained therein does not leak when the outdoor unit 2 is shipped from the factory. The gas-side shutoff valve 12 and the liquid-side shutoff valve 14 are connected to the refrigerant gas communication pipe 31 and the refrigerant liquid communication pipe 34 after the outdoor unit 2 and the indoor unit 3 are installed on site according to a predetermined procedure. Opened.

  The expansion valve 15 is installed in the most upstream refrigerant liquid pipe 35 in the indoor unit 3, and changes the high-pressure refrigerant liquid supplied from the upstream refrigerant liquid communication pipe 34 to the low-pressure state, thereby reducing the downstream side. To the evaporator 16 arranged in

  The evaporator 16 lowers the temperature of indoor air using the heat of vaporization of the low-pressure refrigerant liquid supplied from the upstream side. In the evaporator 16, the refrigerant liquid takes gas heat from the surrounding air, gasifies it, and supplies it as a refrigerant gas to the downstream compressor 11 through the refrigerant gas pipe 30. In the compressor 11, the refrigerant gas is compressed in the same manner as described above to be in a high temperature and high pressure state and circulates in the refrigerant circuit.

<Configuration of outdoor unit 2>
As shown in FIGS. 2 to 6, the outdoor unit 2 includes a casing 40, two fans 28, two gas side closing valves 12, two receiver tanks 13, two liquid side closing valves 14, It is a box-shaped outdoor unit that includes a condenser 20, a refrigerant gas pipe 32, a refrigerant liquid pipe 33, and a switch box (refrigerant device) 27.

  The casing 40 includes two fans 28, two gas side closing valves 12, two receiver tanks 13, two liquid side closing valves 14, a condenser 20, a refrigerant gas pipe 32, and a refrigerant liquid pipe 33. And a box-shaped housing for storing the switch box 27. The casing 40 includes a front part 41, a back part 42, a side part 43, and a ceiling part 44.

  The front portion 41 is a rectangular metal plate disposed on the front side of the outdoor unit 2 as shown in FIG. And the front part 41 has the air inlet 41a, the opening part 41b, and the opening part 41c.

  As shown in FIG. 2, the air suction port 41 a is an opening formed in a rectangular shape from the vicinity of the central portion to the lower end in the front portion 41. Further, in order to ensure safety, a cover 41d formed in a net shape by a metal net or the like is detachably attached to the air suction port 41a.

  As shown in FIG. 2, the opening 41b is formed in a rectangular shape immediately above the air suction port 41a, and a rectangular metal cover 41e is attached so as to cover the opening 41b. The left and right lower ends of the metal cover 41e as viewed from the front are rotatably supported by the front part 41 via hinges (not shown). And the upper end part of the metal cover 41e can be pulled out in the direction toward the front side of the front view, that is, from the back part 42 to the front part 41, using both the left and right lower end parts as fulcrums. Therefore, the metal cover 41e can be rotated to open the opening 41b.

  As shown in FIG. 2, the opening 41c is formed in a rectangular shape immediately above the opening 41b. A rectangular metal cover 41f is detachably attached to the opening 41c so as to cover the opening 41c.

  Thereby, in the case of a maintenance operation | work, the air suction inlet 41a and the opening parts 41b and 41c can be opened as needed, and work can be performed smoothly.

  The back part 42 is a rectangular metal plate arranged on the back side of the outdoor unit 2 as shown in FIGS.

  The side surface portion 43 is configured by combining a left side surface portion 43b and a right side surface portion 43a located on the left and right sides in a front view. The left side surface portion 43b and the right side surface portion 43a are each a rectangular metal plate.

  The ceiling part 44 is disposed at the uppermost part of the outdoor unit 2 and has an opening (not shown) formed in a net shape. In addition, air sucked from the lower first space SP1 by the fan 28 (described in detail later) is exhausted to the outside through the opening.

  Here, as shown in FIGS. 4 and 6, the first space SP1 is a space between the first heat exchange unit 21 and the second heat exchange unit 22, that is, the first heat exchange unit 21 and the second heat. It is a space formed between the exchange unit 22. Further, as shown in FIG. 6, the first space SP1 is a space that is substantially triangular in a side view. (In the following, the upstream side and the downstream side mean the upstream side and the downstream side in the air flow.

  As shown in FIG. 3, one fan 28 is disposed on each of the left and right sides of the front view immediately below the ceiling portion 44, and the air in the lower first space SP <b> 1 (see FIG. 6) is passed through the upper ceiling portion. This is a propeller fan for exhausting air from 44 to the outside.

  As described above, the fan 28 sucks air from the first space SP1, whereby the inside of the outdoor unit 2 can be brought into a negative pressure state. Thereby, the air flow which introduce | transduces external air along the ventilation path A, B, C, D (it explains in full detail in a back | latter stage) in the outdoor unit 2 from the air suction inlet 41a generate | occur | produces.

  The condenser 20 has a first heat exchange unit 21 disposed on the front side and a second heat exchange unit 22 disposed on the back side. And the 1st heat exchange part 21 and the 2nd heat exchange part 22 (henceforth each heat exchange part are described as needed) are arrange | positioned so that it may become a substantially V shape in a side view, as shown in FIG. ing.

  As a result, the length in the substantially vertical direction, i.e., the length in the height direction, is made longer than in the case where each heat exchange part is installed substantially vertically in side view, and the heat transfer area of each heat exchange part is further increased. Can be bigger.

<Air flow in the outdoor unit 2>
As shown in FIGS. 5 and 6, the second space SP <b> 2 is a space between the second heat exchange unit 22 and the back surface unit 42. The third space SP3 is a space between the front part 41 and the first heat exchange part 21. The second space SP2 and the third space SP3 are spaces each having a substantially right triangle in a side view.

  Note that the air sucked from the air suction port 41a is supplied to the third space SP3 along the air blowing path D (see FIG. 6). Then, the air supplied to the third space SP3 passes through the first heat exchange unit 21 on the downstream side (described in detail later) and flows into the first space SP1. Further, the air flowing into the first space SP1 is exhausted from the upper ceiling portion 44 to the outside.

  The 1st heat exchange part 21 is arrange | positioned in the condenser 20 at the front side, as shown to FIGS. Then, when the first heat exchange unit 21 passes through the first heat exchange unit 21 from the third space SP3 on the front side to the first space SP1 on the back side through the first heat exchange unit 21, Heat exchange is performed between the air and the refrigerant flowing inside the first heat exchange unit 21.

  The 2nd heat exchange part 22 is arrange | positioned in the condenser 20 at the back side, as shown to FIGS. The second heat exchanging unit 22 is configured so that when the air supplied to the second space SP2 passes through the second heat exchanging unit from the second space SP2 on the back side to the first space SP1 on the front side, 2 Heat exchange is performed with the refrigerant flowing inside the heat exchange unit 22.

  As shown in FIG. 4, the first ventilation path 23 is formed between the first space SP1 and the left side surface portion 43b and between the first space SP1 and the right side surface portion 43a. The suction ports 41a communicate with each other. The air sucked from the air suction port 41a is supplied to the second space SP2 along the air blowing paths B and A, respectively. For example, the width of the first ventilation path 23 formed between the right side surface portion 43a and the partition plate 29 in the horizontal direction (left and right direction in front view) is about 100 mm, and the left side surface portion 43b and the partition plate 29 The lateral width of the first ventilation path 23 formed between is slightly narrower than the first ventilation path 23 on the right side surface portion 43a side.

  Thus, air can be supplied from the air suction port 41a to the second space SP2 through the first ventilation path 23. Then, the air supplied to the second space SP2 passes through the second heat exchange part 22 on the back side from the second space SP2 and is exhausted to the outside through the first space SP1.

  In addition, by providing the first ventilation path 23 between the first space SP1 and the right side surface portion 43a and between the first space SP1 and the left side surface portion 43b, more air flows from the air suction port 41a to the second space SP2. Can supply air.

  As shown in FIGS. 4 and 5, the partition plate 29 has the first heat exchange unit 21 and the second heat exchange at the left and right side ends in the front view of the first heat exchange unit 21 and the second heat exchange unit 22. Spaces in the vicinity of the side ends of the portion 22 are arranged so as to divide the space into a first space SP1 side and a first ventilation path 23 side.

  Thereby, 1st space SP1 and 1st ventilation path 23 are isolate | separated, and it can prevent that air flows directly into 1st space SP1 from the 1st ventilation path 23, without passing through the 2nd heat exchange part 22. FIG. it can. For this reason, air can be supplied more efficiently from the first ventilation path 23 to the second space SP2.

  As shown in FIG. 6, the second ventilation path 24 is formed below the first heat exchange unit 21 and the second heat exchange unit 22 so that the second space SP2 communicates with the air suction port 41a. Then, the air sucked from the lower part of the air suction port 41a is supplied to the second space SP2 along the air blowing path C. Furthermore, the air supplied to the second space SP2 passes through the second heat exchanging portion 22 and is exhausted to the outside from the upper ceiling portion 44 via the first space SP1.

  Thereby, the flow volume of the air supplied with respect to the 2nd heat exchange part 22 can further be increased.

<Arrangement of refrigerant equipment in outdoor unit 2>
Here, main refrigerant devices (gas side closing valve 12, receiver tank 13, liquid side closing valve 14, switch box 27) provided in the outdoor unit 2 are in the third space SP3 as shown in FIGS. More specifically, the arrangement will be described as follows.

  As shown in FIG. 3 and FIG. 4, the gas side shut-off valve 12 and the liquid side shut-off valve 14 are alternately arranged in two refrigerant gas pipes 32 and two refrigerant liquid pipes 33 arranged on the right side in the front view of the third space. Is attached. And the gas side shut-off valve 12 and the liquid side shut-off valve 14 are comprised combining components, such as a coil (not shown), respectively.

  Two receiver tanks 13 are cylindrical liquid receivers, and two receiver tanks 13 are arranged so as to face the air suction port 41a in the vicinity of the center portion of the third space SP3 when viewed from the front.

  The switch box 27 is disposed on the left side in the front view of the third space SP3, and includes a control board and the like for driving the refrigerant device and the fan 28.

  Thereby, a refrigerant | coolant apparatus can be arrange | positioned in 3rd space SP3 formed between the front part 41 and the 1st heat exchange part 21, ie, the space which becomes a substantially triangular shape in side view. Therefore, the air sucked from the air suction port 41a goes around the space around the refrigerant equipment such as the receiver tank 13 and the switch box 27 and is supplied to the downstream side. Thus, by arranging the refrigerant device in the third space SP3, it is possible to secure a space in which air can smoothly pass through to the downstream side around the refrigerant device. For this reason, it is possible to supply air to the first heat exchange unit 21 and the second heat exchange unit 22 on the downstream side while suppressing an increase in the suction resistance generated by providing the refrigerant device.

  In addition, by intensively arranging main refrigerant devices in the third space SP3 on the front side in this way, it is possible to ensure good access to the refrigerant devices from the front side of the outdoor unit 2. Therefore, there is an effect of improving workability during maintenance work such as cleaning.

  As described above, in the outdoor unit 2, the flow rate of air supplied to the second heat exchange unit 22 can be increased. Therefore, the efficiency of heat exchange between the refrigerant and the air in the second heat exchange unit 22 can be significantly increased.

<Features of outdoor unit 2>
(1)
As shown in FIG. 5, the outdoor unit 2 of the air conditioner 1 of the present embodiment includes a condenser 20 and a casing 40. The condenser 20 has a first heat exchanging part 21 and a second heat exchanging part 22 arranged on the back side of the first heat exchanging part 21, and the front side and the second heat of the first heat exchanging part 21. When air passes from the back side of the exchange unit 22 to the first space SP1 between the first heat exchange unit 21 and the second heat exchange unit 22, heat exchange is performed between the refrigerant flowing in the interior and the air. Let it be done. The casing 40 has at least a side part 43 (see FIG. 2), a back part 42, and a front part 41 in which an air suction port 41a is formed, and stores the condenser 20. Between the 1st space SP1 and the side part 43, the 1st ventilation path 23 which connects the 2nd space SP2 between the 2nd heat exchange part 22 and the back surface part 42 to the air suction inlet 41a is formed.

  In general, some air-conditioning units, for example, outdoor units of an air conditioner, have heat exchangers arranged on the front side and the back side.

  In such an air conditioning unit, when air is sucked from the air suction port on the front side, there is a problem that sufficient outside air (air) cannot be supplied to the heat exchange unit arranged on the back side.

  Therefore, in the outdoor unit 2 of the present invention, the first ventilation path 23 that allows the second space SP2 to communicate with the air suction port 41a is formed between the first space SP1 and the side surface portion 43.

  Thus, air can be supplied from the air suction port 41a to the second space SP2 through the first ventilation path 23. And the air supplied to 2nd space SP2 passes the 2nd heat exchange part 22 from 2nd space SP2, and is exhausted outside from the ceiling part 44 via 1st space SP1.

  For this reason, the flow volume of the air supplied to the 2nd heat exchange part 22 by the 1st ventilation path 23 can be increased. Therefore, the efficiency of heat exchange between the refrigerant and air in the second heat exchange unit 22 can be increased.

  As a result, the efficiency of heat exchange in the outdoor unit 2 of the air conditioner 1 can be improved as compared with the related art.

(2)
In the outdoor unit 2 of the air conditioner 1 according to the present embodiment, as shown in FIG. 4, the space near the side end of the first heat exchange unit 21 and the side end of the second heat exchange unit 22 is the first space SP1 side. And a partition plate 29 arranged so as to be divided into the first ventilation path 23 side.

  Thereby, the first space SP1 and the first ventilation path 23 are separated by the partition plate 29, and the air flows directly from the first ventilation path 23 into the first space SP1 without passing through the second heat exchange section 22. Can be suppressed. For this reason, air can be supplied more efficiently from the first ventilation path 23 to the second space SP2.

  As a result, the efficiency of heat exchange between the refrigerant and the air in the second heat exchange unit 22 can be further improved.

(3)
In the outdoor unit 2 of the air conditioner 1 of the present embodiment, as shown in FIG. 4, the side part 43 includes a left side part 43 b (see FIG. 2) and a right side part 43 a (see FIG. 2) located on the left and right sides in front view. ). A first air passage 23 is formed between the first space SP1 and the right side surface portion 43a and between the first space SP1 and the left side surface portion 43b.

  Thereby, by providing the 1st ventilation path 23 between 1st space SP1 and the right side surface part 43a and between 1st space SP1 and the left side surface part 43b, respectively from the air suction inlet 41a to 2nd space SP2. A lot of air can be supplied.

  For this reason, since the flow volume of the air supplied to the 2nd heat exchange part 22 via 2nd space SP2 can be increased further, the efficiency of the heat exchange between the refrigerant | coolant and air in the 2nd heat exchange part 22 is improved. It can be improved further.

(4)
In the outdoor unit 2 of the air conditioner 1 of the present embodiment, as shown in FIG. 5, the first heat exchange unit 21 and the second heat exchange unit 22 are arranged in a substantially V shape in a side view.

  Thereby, for example, the length in the vertical direction, that is, the length in the height direction is made longer than in the case where each heat exchange part is installed substantially vertically in a side view, and the heat transfer area of each heat exchange part is increased. Can be made larger.

  For this reason, the efficiency of heat exchange can further be improved by arrange | positioning each heat exchange part in substantially V shape.

(5)
In the outdoor unit 2 of the air conditioner 1 of this embodiment, as shown in FIG. 6, the second space SP2 is communicated with the air suction port 41a below the first heat exchange unit 21 and the second heat exchange unit 22. A second ventilation path 24 is formed.

  Thereby, the flow volume of the air supplied with respect to the 2nd heat exchange part 22 can further be increased.

  For this reason, the flow rate of the air supplied with respect to the 2nd heat exchange part 22 can further be increased, and the efficiency of the heat exchange between the refrigerant | coolant and air in the 2nd heat exchange part 22 can be improved further.

(6)
In the outdoor unit 2 of the air conditioner 1 of the present embodiment, as shown in FIG. 3, the refrigerant device (the gas-side closing valve) disposed in the third space SP3 between the first heat exchange unit 21 and the front part 41. 12, a receiver tank 13, a liquid side closing valve 14, and a switch box 27).

  Thereby, a refrigerant | coolant apparatus can be arrange | positioned in 3rd space SP3 formed between the front part 41 and the 1st heat exchange part 21, ie, the space which becomes a substantially triangular shape in side view. Therefore, the air sucked from the air suction port 41a goes around the space around the refrigerant equipment such as the receiver tank 13 and the switch box 27 and is supplied to the downstream side. Thus, by arranging the refrigerant device in the third space SP3, it is possible to secure a space in which air can smoothly pass through to the downstream side around the refrigerant device. For this reason, it is possible to supply air to the first heat exchange unit 21 and the second heat exchange unit 22 on the downstream side while suppressing an increase in the suction resistance generated by providing the refrigerant device.

  As a result, it is possible to suppress a decrease in the flow rate of the air supplied to the first heat exchange unit 21 and the second heat exchange unit 22 on the downstream side.

(7)
The air conditioning unit of the present embodiment is the outdoor unit 2 of the air conditioner 1.

  Thereby, in the outdoor unit 2, the flow rate of the air supplied to the second heat exchange unit 22 can be increased. For this reason, the efficiency of heat exchange between the refrigerant and the air in the second heat exchange unit 22 can be significantly increased.

  As a result, the cooling performance in the outdoor unit 2 of the air conditioner 1 can be significantly improved.

<Other embodiments>
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of invention.

(A)
In the above embodiment, as shown in FIG. 4, an example is given in which the lateral width in the front view of the first ventilation path 23 formed between the right side surface portion 43a and the first space SP1 is about 100 mm. explained. However, the present invention is not limited to this.

  For example, when there is no problem in terms of cooling performance and manufacturing cost in the outdoor unit 2, the width of the first ventilation path 23 may be 100 mm or more. Moreover, you may make it become 100 mm or less. In addition, the said horizontal direction length of the 1st ventilation path 23 each formed between the left side surface part 43b and 1st space SP1 and between the right side surface part 43a and 1st space SP1 is the same or different. May be.

  Also in this case, the same effect as the outdoor unit 2 according to the above embodiment can be obtained.

( B )
In the above embodiment, as shown in FIG. 4, the first ventilation path 23 is formed between the right side surface portion 43a and the first space SP1 and between the left side surface portion 43b and the first space SP1. And explained. However, the present invention is not limited to this.

  For example, if it is difficult to form the first ventilation paths 23 on the left and right sides of the front view as described above due to the layout of each refrigerant device arranged in the outdoor unit 2, the first ventilation path May be formed only on either the left or right of the front view.

  Also in this case, the same effect as the outdoor unit 2 according to the above embodiment can be obtained.

  However, in this case, since the amount of air that can be supplied to the second space SP2 via the first ventilation path 23 is reduced, the first ventilation path 23 is provided on both the left and right sides of the front view as in the above embodiment. Is more preferable.

( C )
In the said embodiment, as shown in FIG. 5, it demonstrated by giving the example by which each heat exchange part is each arrange | positioned by substantially V shape in the side view. However, the present invention is not limited to this.

  For example, when necessary due to the layout of each refrigerant device arranged in the outdoor unit 2, the heat exchange units may be arranged in a substantially vertical or inverted V shape in a side view.

  Also in this case, the same effect as the outdoor unit 2 according to the above embodiment can be obtained.

  However, as described above, when the heat exchange units are arranged substantially vertically, the heat transfer area in the first heat exchange unit 21 and the second heat exchange unit 22 is reduced, so that the side surface as in the above embodiment. It is more preferable to arrange each heat exchange part in a substantially V shape in view. In addition, as described above, when each heat exchanging portion is arranged in an inverted V shape, it may be difficult to install each refrigerant device. It is more preferable to arrange the replacement part.

( D )
In the above embodiment, as shown in FIG. 6, the second ventilation path 24 is formed below the first heat exchange part 21 and the second heat exchange part 22 so that the second space SP2 communicates with the air suction port 41a. Explained with examples. However, the present invention is not limited to this.

  For example, when the height of the outdoor unit 2 is restricted, the second ventilation path 24 may not be provided.

  However, in this case, since the amount of air supplied to the second space decreases, it is more preferable to provide the second ventilation path 24 as in the above embodiment.

( E )
In the said embodiment, as shown in FIG. 6, the example which has arrange | positioned the gas side closing valve 12, the receiver tank 13, the liquid side closing valve 14, and the switch box 27 as a refrigerant | coolant apparatus in the 3rd space SP3 is given. Explained. However, the present invention is not limited to this.

  For example, in the case of an outdoor unit equipped with a compressor, the compressor may be arranged in the third space.

  Further, for example, the refrigerant device arranged in the third space may be changed as appropriate according to the specifications of the outdoor unit.

  In these cases, the same effect as that of the outdoor unit 2 according to the embodiment can be obtained.

( F )
In the said embodiment, the air-conditioning unit demonstrated and demonstrated the example which is the outdoor unit 2 of the air conditioning apparatus 1. FIG. However, the present invention is not limited to this.

  For example, the air conditioning unit may be an indoor unit of an air conditioner.

  In this case, as in the outdoor unit 2 according to the above-described embodiment, it is possible to obtain an effect that the efficiency of heat exchange in the heat exchange section on the back side is improved as compared with the related art.

( G )
In the said embodiment, the air conditioning apparatus 1 demonstrated and demonstrated the example comprised combining two refrigerant circuits. However, the present invention is not limited to this.

  For example, the refrigerant circuit of the air conditioner 1 may have only one system. The air conditioner 1 may be configured by combining three or more refrigerant circuits.

  Also in this case, the same effect as the outdoor unit 2 according to the above embodiment can be obtained.

( H )
In the said embodiment, the air conditioning apparatus 1 gave and demonstrated the example which is an air conditioning apparatus only for cooling. However, the present invention is not limited to this.

  For example, the air conditioner 1 may be a cooling / heating air conditioner.

  Also in this case, the same effect as that of the outdoor unit 2 according to the above embodiment can be obtained in the outdoor unit of the cooling and heating air conditioner.

( I )
In the above embodiment, as illustrated in FIG. 2, an example in which a cover 41 d formed in a net shape is attached to the air suction port 41 a has been described. However, the present invention is not limited to this.

  For example, the cover 41d may be formed in a slit shape.

  Also in this case, the same effect as the outdoor unit 2 according to the above embodiment can be obtained.

  In addition, for example, the air suction port 41 a may be provided on the entire surface of the front portion 41.

  In this case, since the suction area of the air suction port 41a is increased, the suction resistance can be reduced.

The air conditioning unit of the present invention can be widely applied to the air conditioning unit because it has the effect of increasing the efficiency of heat exchange in the second heat exchanging unit as compared with the conventional one.

The figure which shows the refrigerant circuit of the air conditioning apparatus containing the outdoor unit which concerns on one Embodiment of this invention. The figure which shows the external appearance in the front view of the outdoor unit contained in FIG. The figure which shows the internal structure in the front view of the outdoor unit shown in FIG. FIG. 4 is a cross-sectional view taken along an arrow showing the configuration of the condenser and its periphery in section IV shown in FIG. 3. FIG. 5 is a cross-sectional view taken along the arrow illustrating the configuration of the condenser and its periphery in the cross section V shown in FIG. FIG. 6 is a cross-sectional view taken along an arrow schematically showing the condenser and the surrounding configuration in a cross section VI shown in FIG.

1 Air conditioner 2 Outdoor unit (air conditioner unit, outdoor unit of air conditioner)
3 Indoor unit 11 Compressor 12 Gas side shut-off valve (refrigerant equipment)
13 Receiver tank (refrigerant equipment)
14 Liquid side shut-off valve (refrigerant equipment)
15 Expansion valve 16 Evaporator 17 Fan 20 Condenser (heat exchanger)
21 1st heat exchange part 22 2nd heat exchange part 23 1st ventilation path 24 2nd ventilation path 27 Switch box (refrigerant equipment)
28 Fan 29 Partition plate 30 Refrigerant gas pipe 31 Refrigerant gas communication pipe 32 Refrigerant gas pipe 33 Refrigerant liquid pipe 34 Refrigerant liquid communication pipe 35 Refrigerant liquid pipe 40 Casing 41 Front face 41a Air inlet 41b Opening 41c Opening 41d Cover 41e Metal Cover 41f Metal cover 42 Back surface portion 43 Side surface portion 43a Right side surface portion 43b Left side surface portion 44 Ceiling portion SP1 First space SP2 Second space SP3 Third space

Claims (6)

It has a 1st heat exchange part (21) and the 2nd heat exchange part (22) arrange | positioned at the back side of the said 1st heat exchange part (21), The front of the said 1st heat exchange part (21) Air from the side and the back side of the second heat exchange part (22) to the first space (SP1) sandwiched between the first heat exchange part (21) and the second heat exchange part (22), A heat exchanger (20) for exchanging heat between the refrigerant flowing in the interior and the air when passing through,
It has at least a side surface portion (43), a back surface portion (42), a front surface portion (41), and a ceiling portion (44), and an air suction port (41a) is formed only in the front surface portion (41). An opening for exhaust is formed only in the section (44), and a casing (40) for storing the heat exchanger (20),
A space in the vicinity of the side end of the first heat exchange part (21) and the side end of the second heat exchange part (22) is partitioned into the first space (SP1) side and the side part (43) side. A partition plate (29) arranged as follows:
With
The air inlet (41a);
A space between the side surface portion (43) and the partition plate (29);
A second space (SP2) between the second heat exchange part (22) and the back face part (42) ;
A first ventilation path (23) is formed,
Air conditioning unit (2). The side surface portion (43) is composed of a left side surface portion (43b) and a right side surface portion (43a) located on the left and right sides of the front view,
The first ventilation path (23) is formed between the first space (SP1) and the left side surface portion (43b) and between the first space (SP1) and the right side surface portion (43a). Yes,
The air conditioning unit (2) according to claim 1 . In a side view, the first heat exchange part (21) and the second heat exchange part (22) are arranged in a substantially V shape,
Air conditioning unit (2) according to claim 1 or 2 . A second ventilation path (24) is formed below the first heat exchange part (21) and the second heat exchange part (22) to connect the second space (SP2) to the air suction port (41a). Being
The air conditioning unit (2) according to any one of claims 1 to 3 . It further comprises refrigerant equipment (12, 13, 14, 27) disposed in a third space (SP3) formed between the first heat exchange part (21) and the front part (41).
The air conditioning unit (2) according to any one of claims 1 to 4 . The air conditioning unit (2) is an outdoor unit of the air conditioner (1).
The air conditioning unit (2) according to any one of claims 1 to 5 .