WO2002077535A1

WO2002077535A1 - Air conditioner and method of installing the air conditioner

Info

Publication number: WO2002077535A1
Application number: PCT/JP2001/002352
Authority: WO
Inventors: Seiji Inoue; Norikazu Ishikawa; Akio Fukushima
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2001-03-23
Filing date: 2001-03-23
Publication date: 2002-10-03
Also published as: CN1419645A; US20040011072A1; JPWO2002077535A1; GB2376291A; HK1047616A1; GB0211234D0; AU2001239565B2

Abstract

An air conditioner, comprising a cabinet (21) having an indoor side ventilating path (23) formed by extending from one end part to the other end part thereof, first and second ventilating ports (24) and (25) disposed at one end part and the other end part of the cabinet (21) so as to open to the indoor side when used and communicating with the indoor side ventilating path (23), an indoor heat exchanger (26) and an indoor side blower (27) disposed in the indoor side ventilating path (23), an outdoor heat exchanger (28) installed so as to ventilate fresh air to the outside of the indoor side ventilating path (23) inside the cabinet (21) and disposed at a position different from that of the indoor heat exchanger (26) in the direction formed by connecting the first and second ventilating ports (24) and (25) to each other, and an outdoor side blower (29) ventilating fresh air to the outdoor heat exchanger, whereby a room having a heating equipment stored therein can be air-conditioned efficiently without causing the disturbance of air flow.

Description

Description Air conditioner and its installation method

TECHNICAL FIELD The present invention relates to an air conditioner, particularly to an air conditioner suitable for air-conditioning an unmanned room accommodating heat-generating equipment, and a method of installing the same.

As a conventional technique, for example, a cooling / heating device described in Japanese Utility Model Laid-Open No. 62-142227 is shown in FIGS. 9 and 10. FIG. FIG. 9 is a cross-sectional view showing a mounting state during cooling, and FIG. 10 is a cross-sectional view showing a mounting state during heating.

In the figure, 1 is a housing, 2 is partitioned on the upper part of the housing 1, in the posture of FIG. 9, the first room where the side of the room A is open, 3 is partitioned in the center of the housing 1, A second room 4 is open on the outside B side in the opposite direction to the first room 2, and a third room 4 is defined at the bottom of the housing 1. 5 is a compressor provided in the third room 4, 6 is a condenser provided in the second room 3, 7 is an evaporator provided in the first room 2, 8 is a blower for the condenser, 9 Is a blower for the evaporator. Reference numeral 10 denotes an indoor louver, and 11 denotes an outdoor louver. These louvers 10 and 11 are both detachable, can be turned upside down, and can adjust the blowing angle. Although the illustration of the expansion device, refrigerant piping, and the like are omitted, as is well known, the compressor 5, the condenser 6, the expansion device, the evaporator 7, and the compressor 5, which are not illustrated, are arranged in this order. They are connected by refrigerant piping to form a refrigeration cycle. Reference numerals 12 and 13 denote shafts provided coaxially on the upper and lower end surfaces of the housing 1 on the vertical axis, respectively, and the housing 1 is turned around the shafts 12 and 13. You can move. 14 is a side wall facing the outdoor B, and 15 is an opening of the side wall 14. Thus, the housing 1 is opened in the side wall 14 so that the posture shown in FIG. 9 and the posture shown in FIG. 10 can be arbitrarily selected by rotating about the shafts 12 and 13. The same or corresponding parts are denoted by the same reference numerals throughout the drawings, and description thereof will be omitted.

First, when the room A is cooled, the posture shown in Fig. 9 is adopted, so that the opening of the first room 2 containing the evaporator 7 faces the room side and the second room containing the condenser 6 The opening of room 3 faces outside. The high-temperature and high-pressure refrigerant compressed by the compressor 5 is cooled in the condenser 6 by exchanging heat with the outside air introduced by the blower 8, radiating heat to the outdoor B and condensing. Then, the condensed refrigerant enters the evaporator 7 through an expansion valve (not shown), and removes heat from the air in the room A, so that the room A is cooled.

In this case, the room air is sucked by the blower 9 for the evaporator 7 into the first room 2 located at the top of the housing 1 as shown by the arrow a in FIG. Cool air is blown from the lower part of the room A diagonally downward as indicated by the arrow b.

On the other hand, when heating room A, cabinet 1 is rotated halfway around shafts 12 and 13 to achieve the posture shown in Fig. 10. In this example, both the indoor louver 10 and the outdoor louver 11 are temporarily removed before rotating them.c After the housing 1 is turned half a turn, the indoor louver 10 is mounted on the indoor side by changing the top and bottom. The indoor air is sucked into the condenser 6 in the direction of arrow c in FIG. 10, and the air warmed by the condenser 6 is directed downward from the second room 3 in the direction of arrow d. Change the angle of the louver so that it blows out. In addition, outdoor le One bar 11 is attached to the outside of the room, and the angle of the louver in the portion facing the first room 2 is changed so that the air from outside B flows to the evaporator 7. FIG. 11 is a diagram showing the flow of air when the conventional air conditioner configured as described above is used for air conditioning in a room containing devices such as a communication device having a high heat generation density. Fig. 1 (a) shows the case where the air conditioner is installed on the upper part of the side wall, and Fig. 11 (b) shows the case where it is mounted on the lower part of the side wall. In the figure, 16 is a conventional air conditioner configured as shown in FIGS. 9 and 10 above, 17 is an air inlet of the air conditioner 16, and 18 is an air conditioner 16 is an air outlet, 19 is a room to be air-conditioned to accommodate the equipment 20 to be cooled, 20a is provided at the top of the equipment 20 to be cooled, and generates heat generated inside the equipment 20 ₍ The air conditioner 16 was installed above the air conditioning room side wall 14 and was installed in the room 19 as shown in Fig. 11 (a). When cooling the device 20 to be cooled, a part of the cool air blown out from the outlet 18 is an updraft due to the heat generated by the device 20 to be cooled as shown by an arrow e, or the air generated by the cooling fan 20a. A part of the high-temperature air discharged from the device 20 is blown up by the flow, so that it is directly inside the room 19 in the direction of the arrow f. There was a problem that the temperature of the air that was drawn downward and was sucked from the lower part of the device 20 gradually increased, and the reliability of the device 20 deteriorated due to failure of the device.

In addition, a part of the cool air blown out from the outlet 18 is sucked as it is into the inlet 17 of the air conditioner 16 as shown by an arrow g, so that the sucked air is discharged from the device 20. Since the air becomes a mixture of high-temperature air and cold air blown out by the air conditioner, and the temperature becomes relatively low, there is a problem that the efficiency of the refrigeration cycle is reduced and power consumption is increased. In addition, there was a problem that the cold air portion stayed near the bottom C on the side where the air conditioner 16 was installed in the room 19, and the low-temperature air was trapped. On the other hand, as shown in Fig. 11 (b), when the air conditioner 16 is installed below the side wall 14 of the air conditioning room, since the outlet 18 and the inlet 17 are close to each other, the arrow As shown in h, a part of the cool air blown out from the outlet 18 is sucked into the inlet 17 as it is, so the capacity of the air conditioner 16 decreases and the indoor temperature rises. However, there is also a problem that the reliability of the device 20 is reduced.

Furthermore, since high-temperature air due to the exhaust heat of the device 20 accumulates near the upper part D in the room, if a temperature sensor that detects abnormal temperature is installed on the indoor ceiling surface, the abnormally high temperature There was a problem in that the external air was unnecessarily introduced into the room 19 upon detection by a ventilation fan (not shown), and the reliability of the device 20 was reduced due to dust and dust.

In addition, conventional air conditioners dehumidify and blow out room air to some extent for personal air conditioning, so the blown air temperature is low, so that cold air is blown directly to the equipment in order to efficiently cool the equipment 20. When the air conditioner 16 was installed, there was a problem that dew condensation occurred in a portion of the device exposed to the cool air, which could cause a malfunction of the device 20. Disclosure of the invention

The present invention has been made in order to solve such problems of the conventional technology, in which the cool air blown out from the outlet is directly sucked into the inlet, the cold air is trapped in the target room, or the hot air is discharged. It is an object of the present invention to provide an air conditioner capable of suppressing the occurrence of snow pools and efficiently cooling a heat generating device housed in a target room, and an installation method thereof.

An air conditioner according to the present invention is an air conditioner using a refrigeration cycle, wherein the indoor air passage formed to extend from one end to the other end. A first ventilation port which is provided at one end of the housing so as to open in the indoor direction when in use and communicates with the indoor side ventilation path, and which is used at the other end of the housing. A second ventilation port provided to open in the indoor direction and communicating with the indoor ventilation path; an indoor heat exchanger provided in the indoor ventilation path; and a second heat exchanger provided in the indoor ventilation path. An indoor blower that allows air to flow in through one of the first and second ventilation openings and discharges air through the other ventilation opening, and allows outside air to flow outside the indoor ventilation passage in the housing. An outdoor heat exchanger disposed at different positions in the direction connecting the first and second ventilation holes with respect to the indoor heat exchanger; and And an outdoor blower for ventilating outside air.

In addition, the casing and the indoor ventilation path are formed vertically long, so that air is sucked in from the upper ventilation port and cooling air is discharged from the lower ventilation port during cooling.

In addition, a separate member is provided to partition the inside of one end side of the housing into an indoor side and an outdoor side, and the indoor side of the separate member is provided with an indoor side ventilation path and one ventilation opening communicating with the indoor side ventilation path. An outdoor heat exchanger is provided outside the separate member.

Further, a first communication portion provided on the separate member and capable of communicating between the indoor side ventilation path and the outside. The first communication portion is provided on the first communication portion. In the first state, the first communication portion is shielded. In the second state, the indoor-side ventilation path is shielded and the first communication section is opened in the second state, and the room air sucked in from one of the ventilation ports passes through the first communication section. A first damper that is exhausted to the outside by the outdoor blower, and is provided between the first communication portion and the indoor blower in the indoor ventilation passage, and is provided between the first ventilation passage and the indoor ventilation passage. A second communication portion that can communicate outside air, and is provided so as to be able to open and close the second communication portion. In the first state, the second communication portion is shielded. In the state, a second damper is provided that opens the second communication portion and allows the outside air sucked from the second communication portion by the indoor side blower to be blown into the room through the other ventilation port. It is.

A temperature sensor that outputs a signal corresponding to a room temperature; temperature setting means that can set a first temperature level and a second temperature level lower than the first temperature level; and an output signal from the temperature sensor. When the temperature exceeds the first temperature level set by the temperature setting means, the first damper and the second damper are set, and when the temperature falls below the second temperature level, the first damper and the second damper are set. And a control circuit for controlling to close the damper.

In addition, the housing is located outside the room rather than inside the room at the time of attachment.

In addition, the indoor heat exchanger is disposed above and the outdoor heat exchanger is disposed below, and drain water generated when the indoor heat exchanger is used as an evaporator is dropped on the outdoor heat exchanger. It is configured as follows.

A bypass path connecting the refrigerant pipe on the discharge side of the compressor to the refrigerant pipe on the suction side of the compressor; and a bypass path provided in the bypass path from the discharge side of the compressor to the suction side of the compressor. And a check valve for preventing the flow of the refrigerant.

In addition, an installation method of an air conditioner according to the present invention includes a housing having an indoor-side ventilation passage formed to extend from one end to the other end, and an indoor air passage at one end of the housing. A first ventilation port provided to open in the direction and communicating with the indoor ventilation path; and a second ventilation port provided in the other end of the housing so as to open in the indoor direction when used. A second heat vent, an indoor heat exchanger provided in the indoor air passage, and one of the first and second air vents provided in the indoor heat passage. Let air in, An indoor blower that is discharged from the other ventilation opening, and a first and second indoor heat exchanger that is provided so as to allow outside air to flow outside the indoor ventilation passage in the housing. An air conditioner using a refrigeration cycle that includes an outdoor heat exchanger disposed at different positions in the direction connecting the ventilation ports and an outdoor blower that ventilates outside air to the outdoor heat exchanger is used. In addition, the air inlet and the cooling air outlet of the indoor air of the air conditioner are mounted in a room in which convection is promoted in a room in which convection is generated by the heat generating device.

In addition, the indoor air suction port is located above the room, and the cooling air outlet is oriented downward in the room. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a side view showing a main part of an air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is a side view illustrating an installation mode of the air-conditioning apparatus according to Embodiment 1 of the present invention.

FIG. 3 is a side view showing a main part of an air conditioner according to Embodiment 2 of the present invention.

FIG. 4 is a side view illustrating a method of installing an air conditioner according to a third embodiment of the present invention.

FIG. 5 is a side view illustrating another method of installing the air conditioner according to the fourth embodiment of the present invention.

FIG. 6 is a side view showing a main part of an air conditioner according to Embodiment 5 of the present invention.

FIG. 7 is a side view showing a main part of an air conditioner according to Embodiment 6 of the present invention. FIG. 8 is a configuration diagram showing control means of a damper used for an air conditioner according to Embodiment 6 of the present invention.

FIG. 9 is a cross-sectional view showing an example of a mounting state of a conventional air conditioner at the time of cooling.

FIG. 10 is a cross-sectional view showing an example of a mounting state of a conventional air conditioner at the time of heating.

FIG. 11 is an explanatory diagram showing the flow of air when performing air conditioning of a heat-generating equipment housing room using a conventional air-conditioning apparatus. BEST MODE FOR CARRYING OUT THE INVENTION

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

Example 1

FIG. 1 is a cross-sectional configuration diagram illustrating a main part of an air conditioner according to Embodiment 1 of the present invention, and FIG. 2 is a diagram illustrating an installation example of the air conditioner illustrated in FIG.

In the figure, 21 is a vertically long case, and the right side of the figure is a housing configured to be attached to the side wall of the room to be air-conditioned, and 22 is one end side in the case 21. A separate member provided so as to partition the space between the indoor side and the outdoor side. Reference numeral 23 denotes an indoor ventilation passage formed to extend from one end of the housing 21 toward the other end. One end of the ventilation path 23 is formed by a space on the indoor side of the housing 21 partitioned by the separation member 22. Reference numeral 24 denotes a first ventilation port which is provided at one end of the housing 21 so as to open to the indoor side and communicates with the indoor ventilation path 23, and reference numeral 25 denotes a first ventilation port at the other end of the housing 21. A second ventilation port, which is provided to open to the indoor side and communicates with the indoor ventilation path 23, is provided in the indoor ventilation path 23 at the other end of the housing 21. The indoor heat exchanger 27 is installed in the indoor ventilation passage 23. A chamber through which air flows in from one of the first and second ventilation ports 24, 25 and air that flows through the indoor heat exchanger 26 is discharged from the other ventilation port An inner blower 28 is an outdoor heat exchanger provided so as to allow outside air to flow into the outdoor space of the separate member 21 inside the housing 21. The outdoor heat exchanger 28 is an indoor heat exchanger. The heat exchanger 26 is arranged so as to be shifted from the heat exchanger 26 at a different position in a direction connecting the first and second ventilation holes 24 and 25. 29 is an outdoor blower that ventilates outside air to the outdoor heat exchanger 28, 30 is a compressor provided at the other end of the housing 1, 31 is an outdoor heat exchanger 28 and indoor heat A decompression device provided in the pipe connecting the heat exchanger 26 and 32 collects water droplets condensed on the surface of the indoor heat exchanger 26 and discharges it to the outside of the housing 21 Drain pan and drain Exit.

The compressor 30, the outdoor heat exchanger 28, the pressure reducing device 31, the indoor heat exchanger 26, and the compressor 30 are sequentially connected by a refrigerant pipe as shown in FIG. The working fluid is sealed inside the piping to form a vapor compression refrigeration cycle. In the example of FIG. 1, the outdoor heat exchanger 28 functions as a condenser, the indoor heat exchanger 26 functions as an evaporator, the first ventilation port 24 functions as an indoor air suction port, and the second The ventilation holes 25 are operated as cooling air outlets. In the above vapor compression refrigeration cycle, a fluorocarbon hydrogen (HFC) based refrigerants containing no chlorine for example R 4 0 7 C, R 4 1 0 A, R 3 2 etc. or C 0 _2,, hydrocarbon (HC) and other substances with an ozone depletion potential of 0 as the working fluid, and are not compatible with HFC-based refrigerants such as polyol ester oil or polyvinyl ether oil or HFC-based refrigerant that are compatible with HFC-based refrigerants (not shown). Soluble, for example, hard alkylbenzene oil is used.

In the air conditioner 33 according to Embodiment 1 of the present invention configured as described above, each component is integrally housed in the housing 21. Also, separate The member 22 houses the inside of the housing 21 at one end side where the outdoor heat exchanger 23 and the outdoor blower 29 are housed, and the indoor heat exchanger 26 and the indoor blower 27 are housed. It prevents the mixture of indoor air and outdoor air. In FIG. 1, a third ventilation port, which is an outlet of the outdoor blower 29, is opened in the upper front part of the housing 21 when viewed from the left side of the figure. A fourth ventilation port, which is a suction port for the outdoor heat exchanger 23, is opened in the upper surface portion and / or upper portion of the side surface, respectively, but none of them is shown. When the outdoor blower 29 was operated, the outside air taken in from the fourth ventilation port provided on the upper surface and / or the side surface of the housing was provided outside the separate member 22 inside the housing 21. The heat is exchanged with the refrigerant in the outdoor heat exchanger 28 to become high temperature, and is blown out from the third ventilation port on the upper front surface of the housing 21 via the outdoor blower 29.

The compressor 30 and the pressure reducing device 31 may be housed at the other end of the housing 21 housing the indoor heat exchanger 26 as shown in FIG. The heat exchanger 28 may be housed inside the room at one end of the housing 21.

On the other hand, in Fig. 2, reference numeral 19 denotes an air-conditioned room containing heat-generating equipment 20, 19a is a ventilation fan for introducing outside air into the room 19, and 19b is air in the emergency room 19. Is a ventilation fan for exhausting air, and 20a is a device blower attached to the device 20 for forced exhaust. The air conditioner 33 configured as shown in FIG. 1 is formed to be vertically long, with the suction port 24 facing the upper inside of the chamber 19 and the outlet 25 facing the lower inside of the chamber 19. As shown, it is installed from the outside of the side wall of the room 19. Examples of the heat-generating device 20 to be cooled include devices having a large calorific value, such as a communication device, a wireless device, and a computer.However, the heat-generating device 20 is not particularly limited to these devices. Any device that requires air conditioning such as Such equipment 20 generally has a heating density Is very high and local high temperature is likely to occur inside the equipment, so the blower 20a draws relatively low-temperature air, which tends to accumulate below the interior of the chamber 19, into the interior of the equipment 20, and blows it upwards As a result, the air inside the room 19 is supplied to and exhausted from the device 20 to forcibly cool the device. In addition, such equipment is not susceptible to dust and dirt in the air, so that the room 19 is generally made with high hermeticity.

Next, the operation of the air-conditioning apparatus according to Embodiment 1 configured as described above will be described.

In the present invention, since the device 20 inside the room 19 is assumed to be a device with a large amount of heat generation such as a communication device, a radio device, and a computer, a cooling operation for cooling the air inside the room 19 will be described as an example. I do.

The refrigerant compressed to a high temperature and a high pressure by the compressor 30 flows into the outdoor heat exchanger 28, where it radiates heat to outdoor air sent by the outdoor blower 29 to condense and liquefy. This liquid refrigerant becomes a low-temperature, low-pressure gas-liquid two-phase refrigerant in the pressure reducing device 31, flows into the indoor heat exchanger 26, where the air inside the chamber 19, which is sent by the indoor blower 27, After being absorbed, evaporated and gasified, it returns to the compressor 30.

The air in the upper part of the chamber 19, which is sent from the inlet 24 to the indoor heat exchanger 26 by the indoor blower 27, travels in the direction shown by the dashed arrow in FIG. The refrigerant in the vessel 26 is cooled by the latent heat of vaporization of the refrigerant, and is blown downward from the outlet 25 into the chamber 19. The cooling air is blown upward from below by a device blower 20 a attached to the device 20 housed in the room 19 and cools the device 20. At this time, the cooling air is heated by the heat generated by the device 20, and the heated air is blown upward by the device blower 20a as shown by a solid line arrow in FIG. Electronic devices such as communication devices, wireless devices, and computers that are mainly cooled by the present invention. Since equipment does not like dust and dirt in the air, the equipment room 19 as shown in Fig. 2 is usually designed to be highly sealed, and outside air is It is operated so that it does not get mixed in and restricts human access. However, in the event that the air temperature inside the room 19 rises abnormally due to the failure of the air conditioner 33, the room 19 has ventilation fans 19a and 19b for exhaust and suction. Is installed. When the air temperature inside the room 19 exceeds the set value, these ventilation fans are operated synchronously to introduce outside air into the room 19, lower the room temperature, and malfunction of the equipment 20 due to abnormally high temperature. prevent.

As described above, according to the first embodiment of the present invention, the suction port 24 and the air outlet 25 are provided on the one end side and the other end side of the vertically formed casing 21 so as to be separated from each other. The suction port is located above the target room to suck in the air above, and the outlet is located below the target room to blow cool air down.The convection in the target room 19 is on the side wall of the target room 19 The air conditioner was installed in the direction that facilitates convection in the direction of The air blown into the chamber 19 and blown out from the outlet 25 opened below the side wall of the chamber 19 can disturb the air flow inside the chamber 19 created by the device blower 20a. Therefore, there is an effect that the device 20 such as a communication device having a high heat generation density can be efficiently cooled.

In addition, since stagnation is less likely to occur in the air inside the room 19, it is possible to prevent a malfunction in the operation of the device due to a local temperature rise of the air inside the room 19 beforehand.

Furthermore, even if a temperature sensor that detects abnormal indoor temperatures is installed near the indoor ceiling, it is difficult for hot air to accumulate near the ceiling. Without introducing outside air, It is also possible to prevent a decrease in the reliability of the device due to dust or the like.

Furthermore, since the intake air temperature of the air conditioner can be kept high, the air conditioner can be operated efficiently, and the power consumption of the air conditioner can be suppressed.

In addition, using a separate member 22 that separates the outdoor air and the indoor air from mixing inside the housing 21, one end of the housing 21 is divided into an indoor side and an outdoor side. A first ventilation port 24 is provided at the end of the indoor-side ventilation path 23, and an outdoor heat exchanger is disposed outside the room via a separating member 22. By arranging 28, the air conditioner can be made thinner and cheaper.

Further, as shown in FIG. 2, the air conditioner of the above embodiment is integrally installed on the outside of the side wall of the room 19 containing the equipment to be cooled. Therefore, compared to installing a separate type air conditioner, which is the mainstream in current air conditioners, there is no need to secure an indoor unit installation space inside room 19, resulting in higher space efficiency. In addition, the size of the room 19 can be reduced. In addition, the labor and cost for construction work for installing the refrigerant pipe connecting the outdoor unit and the indoor unit can be reduced. In addition, the causes of poor air-conditioning such as insufficient evacuation of the refrigeration cycle due to poor piping work, foreign matter in the cycle, excessive or insufficient refrigerant charge, refrigerant leakage, and forgetting to open the connection valve have been eliminated. The operation reliability of the object to be cooled can be improved.

Furthermore, the air-conditioning apparatus according to Embodiment 1 can be installed with the indoor side surface of the housing 21 in close contact with the side wall surface of the equipment room 19 as shown in FIG. 1 and FIG. Therefore, it is possible to perform all maintenance of the housing 21 and its internal components from the outdoor side. Therefore, there is no need for humans to enter the room 19 during maintenance of the air conditioner. Therefore, it is possible to suppress dust and dust from entering the room 19, thereby improving the reliability of the device 20.

Further, in the vapor compression refrigeration cycle constituting the air conditioner according to the present embodiment, R 407 C, R 410 A, R 32, etc., which are HFC-based refrigerants containing no hydrogen fluoride and containing chlorine. or C 0 _2, HC, etc. and material working fluid ozone destruction coefficient number 0, refrigerating machine oil miscible or polyol ester oil or polyvinyl ether oil to HFC-based refrigerant as, the HFC refrigerant incompatible hard Since alkylbenzene oil and the like are used, an air conditioner that considers the global environment can be obtained without destroying the ozone layer.

Further, since the air conditioner according to the present embodiment is intended to cool the equipment housed in the room 19 having a relatively high airtightness, the latent heat load (dehumidification load) during the cooling operation is reduced to the ordinary personal air conditioning. Small in comparison. As a result, the sensible heat ratio (the ratio of the sensible heat load to the total air-conditioning load) becomes high sensible heat operation, for example, 0.9 or more. The capacity of the indoor heat exchanger 26 and / or the capacity of the indoor blower 27 are larger than that of the humidifier. With this configuration, the heat generated by the equipment can be efficiently handled, and the temperature of the cooling air blown out becomes higher than that of a normal air conditioner. No problem occurs.

Example 2.

In the first embodiment, the outdoor heat exchanger 28 is disposed above the housing 21 and the indoor heat exchanger 26 is disposed below the housing 21. As in Embodiment 1, a thin air conditioner can be obtained. Hereinafter, a specific description will be given.

FIG. 3 is a sectional configuration diagram showing an air conditioner according to Embodiment 2 of the present invention. is there. In the figure, an outdoor heat exchanger 28 and an outdoor blower 29 are disposed below the other end of the housing 21, and an indoor heat exchanger 26 and an indoor blower 27 are mounted on the housing 21. This embodiment is significantly different from the first embodiment in that it is disposed above one end. Note that the indoor air suction port 24 is disposed above the air conditioner 33 so as to draw in high-temperature air above the room as in the first embodiment, and the air outlet 25 is also the same as in the first embodiment. The equipment to be cooled is arranged below the air conditioner 33 so as to blow cool air to the suction side of the blower. The inlet 24 is located on the indoor side (room 19 side) of the indoor heat exchanger 26, and the outlet 25 is located on the indoor side (room 19 side) of the outdoor heat exchanger 28. are doing.

On the other hand, a separate member 22 that partitions the inside of the housing 21 so that the outdoor air and the indoor air do not mix inside the air conditioner is provided on the other end side of the housing 1 (below the figure). On the indoor side of the separation member 22, the other end of the indoor-side ventilation path 23 is formed, and further, an air outlet 25 communicating with the indoor-side ventilation path 23 is provided. An outdoor heat exchanger 28, an outdoor blower 29, a compressor 30 and a decompression device 3 are located on the outdoor side of the separate member 22.

1 is installed.

In addition, the condensed water (drain) resulting from cooling the indoor air with the indoor heat exchanger 26 installed above is distributed to the outdoor heat exchanger 28 via the drain pan and the drain outlet 32. The drain outlet 32 is located above the outdoor heat exchanger 28.

With the above-described configuration, as in the case of the first embodiment, when it is mounted in a target room (not shown),

(1) The high-temperature air in the target room sucked from the upper intake port (2) (4) travels in the indoor ventilation path (23) as indicated by the dashed arrow, is cooled by the evaporator (26), and

(1) Blow-off port (2) Blows out from the target room into the target room, effectively using the equipment in the target room Can be cooled. Further, in the second embodiment of the present invention, the drain water condensed from the indoor air is dropped and sprayed from the drain outlet 32 to the outdoor heat exchanger 28, so that the drain water is particularly high when the outside air temperature is high in summer. Since the latent heat of evaporation can be used, the rise in condensation temperature can be suppressed, and there is also the effect that the operating efficiency of the refrigeration cycle improves.

Example 3.

In the first embodiment, when the equipment to be cooled has a blower that discharges the cooling air upward, the air conditioner 33 is installed on the side wall of the chamber 19, so that the room 1 9 Although an example of efficiently cooling equipment with high heat generation density without disturbing the flow of air inside was shown, in Example 3, installation was performed when the equipment to be cooled had a horizontal blower. The method is explained.

FIG. 4 is a side view at the time of installation showing a method of installing an air conditioner according to Embodiment 3 of the present invention.

As shown in the figure, the equipment 20 to be cooled, such as a communication device, a wireless device, and a computer, sucks air from the front part (the left side in FIG. 4) as indicated by the solid line arrow, and the back part (in FIG. It has a cooling blower 20a that blows out to the right side). Further, the air conditioner 33 is installed on the ceiling of the room 19 with the inlet 24 and the outlet 25 facing downward. In this case, the suction port 24 is arranged on the right side of the room 19 (to the rear of the equipment) in accordance with the flow of air in the direction of the solid arrow by the device blower 20a. 5 is installed and installed so as to open to the left of the room 19 ceiling (the front side of the equipment). As described above, by adopting an installation method in which the direction of the inlet 24 and the outlet 25 of the air conditioner 33 is set in accordance with the direction of convection by the equipment 20 in the room 19, the equipment 20 The room air, which has become high temperature by processing the heat generated inside the room, goes to the upper right of the figure by the equipment blower 20a, and the air conditioner 3 3 As shown by the dashed arrow from the inlet 24 provided at the right end of the air conditioner 33, the air is sucked in by the indoor blower 27 inside the air conditioner 27, cooled by the indoor heat exchanger 26, and then It is blown out from 25 toward the lower left side of the room. This cool air is sucked in from the front of the equipment (left side in Fig. 4) by the equipment blower 20a, and cools the equipment 20.

As described above, according to the third embodiment of the present invention, the air blower 20 a directs the suction port 24 of the air conditioner 33 toward the ceiling surface on the side from which the exhaust heat is blown out, and the equipment blower 20 a The air conditioner 3 3 was installed with the outlet 25 facing the ceiling on the left side of the figure, which is the side that sucks air. It is possible to efficiently cool equipment with a high heat generation density without disturbing heat and improve the reliability of equipment. Furthermore, since the intake air temperature of the air conditioner 33 can be kept high, the air conditioner can be operated efficiently and the power consumption of the air conditioner can be suppressed.

Example 4.

In the third embodiment, an example is shown in which the air conditioner 33 is installed laterally on the roof of the room 19 in order to cool the equipment 20 having the side-blower blower 20a. It is not limited to the section and the ceiling.

FIG. 5 is a side view showing an installation method of an air conditioner according to Embodiment 4 of the present invention at the time of installation.

As the air conditioner shown in the figure, the same configuration example as that shown in FIG. 1 of Embodiment 1 is used, and the side wall surface of the room 19 is located below the room 19 which is the suction side of the equipment blower 20. The air outlet 25 of the air conditioner 33 is connected to the air conditioner 33, and the suction port 24 of the air conditioner 33 is installed above the same surface of the chamber 19.

In Example 4, the air outlet 25 of the air conditioner 33 was It is arranged toward the suction side of the machine 20a, and is sucked into the position where the high-temperature air that has been discharged to the rear of the machine 20 (right side in the figure) by the machine blower 20a and moved above the chamber 19 is sucked. By arranging and installing the port 24, air flows through the inside of the air conditioner 33 as indicated by the dashed arrow, and cool air blown out from the air conditioner 33 is sucked into the device blower 20a. Thus, air flows in the direction indicated by the solid arrow, and air flows in a direction that promotes convection by the device 20 as a whole, similarly to the third embodiment shown in FIG. 4, and the air blows into the chamber 19. The occurrence of pooling can be prevented. Therefore, the device 20 can be efficiently cooled, so that the reliability of the device can be improved and the power consumption of the air conditioner can be suppressed.

Embodiment 5.

In the figure, 34 is a pipe connecting the discharge side of the compressor 30 and the condenser 28, 35 is a pipe connecting the compressor 30 suction side and the evaporator 26, and 36 is the above. A bypass pipe 37 provided to bypass between the two pipes 3 4 and 3 5 is provided inside the bypass pipe 36, and is provided between the discharge side 34 and the suction side 35 of the compressor 30. This is a check valve that blocks the flow of the refrigerant.

Next, the operation will be described. In the normal cooling operation in which the compressor 30 is operated, the bypass pipe 36 connecting the compressor discharge pipe 34 and the suction pipe 35 is closed by the check valve 37 so that it is the same as in the first embodiment. Therefore, the description is omitted.

Next, when the outside air temperature is lower than the indoor suction air temperature by about 5 [° C] or more, when the compressor 33 is stopped, the refrigerant liquid condensed by the low-temperature outside air in the condenser 28 almost opens. After passing through the decompression device 31 that is fully open, it flows into the evaporator 26 that is installed below by gravity, and the indoor air and heat Exchange and evaporate. At this time, since the pressure of the evaporator 26 is higher than the pressure of the condenser 28 by a pressure difference based on the height difference from the condenser 28, the evaporator 26 passes through the bypass pipe 36 and the check valve 37. To the condenser 28. Here, the heat is radiated again to the low-temperature outside air, condensed and liquefied, and the natural circulation refrigeration cycle operates.

During the natural circulation operation described above, if only the indoor blower 27 and the outdoor blower 29 are operating, the refrigerant will have a difference in height between the condenser 28 and the evaporator 26, as well as the Since the air is circulated by the pressure difference caused by the density difference, the inside of the room 19 can be cooled very efficiently with little power consumption without supplying power to the compressor 30. Power can be greatly reduced. In this case, although not shown, an indoor temperature sensor that detects the temperature of the air sucked from the target room 19, an outside air temperature sensor that detects the outside air temperature, and a compressor based on the information of these two sensors It goes without saying that a known control technology such as a control device for controlling the operation of the vehicle can be added.

Furthermore, if the compressor 30 is of a capacity control type with variable rotation speed, high / low pressure bypass, etc. It is possible to further reduce power consumption by reducing.

Embodiment 6.

7 and 8 show a main part of an air conditioner according to Embodiment 6 of the present invention. FIG. 7 is a side view of the air conditioner, and FIG. 8 shows a damper control means. It is a block diagram. In the figure, reference numeral 38 denotes a first communication portion provided on the separate member 22 downward from the lower end of the first ventilation port 24 to allow communication between the indoor ventilation path 23 and the outside. The first communication portion 38 is provided in the first communication portion 38. In the first state, which is a normal state, the first communication portion 38 is shielded. In the second state, such as when an abnormality occurs, the indoor side ventilation path 23 is opened, and the indoor side ventilation path 23 is shielded, and the first communication part 38 is opened to suck air from one of the ventilation ports 24. A first damper 40 for allowing the indoor air that has flowed through the first communication section 38 to be exhausted to the outside by the outdoor blower 29, 40 is the first communication section in the indoor inside ventilation path 23. A second communication portion, which is provided so as to open the outer wall of the housing 21 located between the inside air passage 23 and the inside air blower 27, and can communicate outside air with the inside air passage 23, 4 1 Is provided so as to be able to open and close the second communication part 40, shields the second communication part 40 in the first state, and closes the second communication part 40 in the second state. A second air outlet that opens to allow the outside air sucked from the second communication portion 40 by the indoor air blower 27 to be blown into the room through the other air vent 25. It is a damper.

Reference numeral 2 denotes a temperature sensor that outputs a signal corresponding to the room temperature, for example, a thermosensitive antibody is used, and the vicinity of the suction port 24 inside the indoor ventilation passage 23 or the remote controller attached to the air conditioner 33 is provided. Installed inside the controller (not shown). Reference numeral 43 denotes opening / closing means for the dampers 39, 44 denotes opening / closing means for the dampers 41.The damper opening / closing means 43, 44 have, for example, an electromagnetic actuator, and an electric signal from the control circuit 45. The dampers 39, 41 can be kept in a closed state or an open state, respectively. Reference numeral 46 denotes temperature setting means for setting the first temperature and the second temperature to the control circuit 45 in advance.For example, the first temperature is set to the maximum value of the allowable ambient temperature of the equipment to be air-conditioned. However, the second set temperature is preset to a lower temperature. The control circuit 45 sends a signal to the damper opening / closing means 43, 44 when the room temperature detected by the temperature sensor 42 exceeds the first set temperature set by the temperature setting means 46, and sends the signal to the damper. The control is performed so that the dampers 39 and 41 are closed by sending signals to the damper opening / closing means 43 and 44 when the temperature falls below the second set temperature. Next, the operation will be described. First, the temperature of the air inside the room 19 is detected by the temperature sensor 42 installed in the air conditioner 33. If the detected value does not exceed the first set temperature, which is a preset abnormal set value, the first and second dampers 39 and 41 are closed, which is completely different from the first embodiment. It works similarly.

Next, if the detected air temperature value inside the room 19 exceeds a preset abnormal value, the first and second dampers 39 and 41 are opened, and the outdoor blower 29 is used. The room air that has become abnormally high temperature is discharged outside through the first damper 39 as shown by the arrow i, and the outside air is blown into the room through the second damper 41 by the indoor blower 27 to lower the room temperature. . Then, when the room air temperature falls below the second set value (first set value> second set value), which is a preset normal set value, the first and second dampers 39 and 4 Close 1 to return to normal cooling operation. If the air conditioner 33 is out of order, an alarm signal may be transmitted to a predetermined management site (not shown) while the dampers 39 and 41 are opened.

As described above, according to the sixth embodiment, when the air temperature inside the target room 19 becomes abnormal, the first and second dampers 39, 41 are opened to make room air outside. Since the air can be discharged and the outdoor air can be introduced into the room, the reliability of operation can be secured without exposing the cooling object inside the room 19 to abnormally high temperatures even in the event of an air conditioner malfunction. . In addition, it is not necessary to install separate ventilation fans 19a and 19b for exhaust and intake as shown in Fig. 2 separately from the air conditioner 33 in the room 19. Since the structure of 19 is simple and no ventilation fan is required, it can be inexpensive o

The communication sections 38, 40 and the open / close dampers 39, 41 discharge indoor air. It can be located at either one of the suction side and the suction side. However, when it is installed in an airtight room, it is preferable to install it on both the discharge side and the suction side as in this embodiment.

Also, the outdoor heat exchanger 28 is provided above the housing 21 and the indoor heat exchanger 26 is provided below the housing 21 with an open / close damper. In other words, as shown in FIG. 3, the outdoor heat exchanger 28 is disposed below the housing 21 and the indoor heat exchanger 26 is disposed above the housing 21. It is permissible to provide an open / close damper on the device.

By the way, in the above embodiment, the separate member 22 provided on one end side of the housing 21 is arranged so that the inside of the one end side of the housing 21 extends along a plane parallel to the surface of the outer wall to be attached. 1 is formed in the vertical direction at one end, but is not necessarily limited to this. For example, one end of the housing 21 in a direction perpendicular to the outer wall surface so that one side in the left and right direction is the outdoor heat exchanger 28 and the other side is the indoor ventilation passage 23 when viewed from the indoor side to be installed. The same effect can be expected even if it is formed in the vertical direction of the part. Further, the positional relationship between the indoor heat exchanger 26 and the blower 27 is not limited to the embodiment.

Further, in each of the first to sixth embodiments of the present invention, the case where each of the cooling target devices 20 has a blower 20 a for cooling the device itself has been described as an example, but the cooling device necessarily has a blower. Similar effects can be expected even for devices that do not have this. In particular, in Examples 1, 2, 5, and 6, even if the device to be cooled did not have a blower, upward natural convection occurred according to the heat generation density. An indoor airflow similar to that of the blower 20a having such a top blow is formed. Therefore, the suction port 24 of the air conditioner 33 is designed so that the cool air is blown to the upstream side (suction side) of the natural convection inside the equipment and the high-temperature air is sucked downstream (outlet side). 1 9 It is arranged so that it is located above the side wall surface. However, it may be arranged in a direction that helps convection.

In each embodiment of the present invention, the refrigeration cycle has been described as being exclusively used for cooling on the premise that the heat-generating equipment is cooled.However, the connection between the outdoor heat exchanger and the indoor heat exchanger is performed using a four-way valve (not shown). Needless to say, the heat pump may be configured to switch between cooling and heating as desired by switching. In this way, the inside of the room 19 can be heated, for example, when a worker enters the room 19 due to maintenance of the equipment during a low outside air temperature, such as in a severe winter, so that the worker can be heated. This has the effect of improving workability. In addition, in consideration of the working environment when a worker enters the room 19 due to maintenance of equipment in summer, etc., the air blowing direction of the indoor blower 27 is reversed, and the air is blown through the lower second ventilation opening 25. It is also possible to add a function to suck indoor air and blow cool air into the room 19 from the first ventilation port 24 provided in the upper part, in which case the workability is improved. More preferred above.

Furthermore, if the room 19 is not very well insulated, the temperature may be too low during operation of the equipment in winter, when the outside air temperature is low. , The operation reliability of the device can be improved.

As described above, according to the present invention, a housing having an indoor ventilation passage formed to extend from one end to the other end, and is opened at one end of the housing in a direction toward the inside of the use chamber. A first ventilation port that communicates with the indoor-side ventilation path, and a second ventilation port that is provided at the other end of the housing so as to open toward the room when in use and communicates with the indoor-side ventilation path. A ventilation opening, an indoor heat exchanger provided in the indoor ventilation passage, and an airflow provided from one of the first and second ventilation openings provided in the indoor ventilation passage, An indoor blower that is discharged from the other ventilation opening, and an outside blower that is outside the indoor ventilation passage in the housing. An outdoor heat exchanger provided so as to allow air to flow therethrough and arranged at different positions in the direction connecting the first and second ventilation holes to the indoor heat exchanger; and The air conditioner is equipped with an outdoor blower that ventilates outside air to the exchanger. Thus, there is an effect that an air conditioner that can suppress the occurrence of heat generation and efficiently cool the heat generating equipment housed in the target room can be provided.

In addition, by installing the air conditioner configured as described above with the inlet and outlet aligned in a direction that assists the flow of air due to convection in the room that houses the heating equipment, the convection is not disturbed. This has the effect that air conditioning can be performed efficiently. Industrial applicability

As described above, the air conditioner and the method for installing the same according to the present invention are particularly preferably used for air conditioning in a room accommodating a heating device which is operated unattended.

Claims

The scope of the claims

1. In an air conditioner using a refrigeration cycle,

A housing having an indoor ventilation path formed to extend from one end to the other end, and provided at one end of the housing so as to open toward the room when in use and communicating with the indoor ventilation path; A first ventilation port to be opened, and a second ventilation port provided at the other end of the housing so as to open in a direction toward the indoor when used, and communicating with the indoor ventilation path.

(2) an indoor heat exchanger provided in the indoor ventilation path; and (3) an air flow through one of the first and second ventilation ports provided in the indoor ventilation path. An indoor air blower for discharging air from the other air vent, and an outside air outside the indoor air passage in the housing, and the first and second air blowers are provided to the indoor heat exchanger. An air conditioner comprising: an outdoor heat exchanger disposed at a position different from each other in a direction connecting two air vents; and an outdoor blower for ventilating outside air to the outdoor heat exchanger.

2. In Claim 1, the casing and the indoor ventilation passage are formed vertically long, and air is sucked in from an upper ventilation opening and cooling air is discharged from a lower ventilation opening during cooling. Air conditioner.

3. In Claim 1, a separate member is provided for partitioning the inside of the one end side of the housing into the indoor side and the outdoor side, and the indoor side of the separate member communicates with the indoor side ventilation path and the indoor side ventilation path. An air conditioner comprising: a ventilation port; and an outdoor heat exchanger disposed outside of the separating member.

4. The first communication part according to claim 3, wherein the first communication part is provided in the separate member and is capable of communicating between the indoor side ventilation path and the outside. The first communication part is provided in the first communication part. In the second state, the indoor air passage is opened and the first communication portion is opened, and the indoor air sucked from one of the air vents is opened in the second state. A first damper configured to be exhausted to the outside by the outdoor blower through the communication portion, provided between the first communication portion and the indoor blower in the indoor ventilation passage, and provided in the indoor ventilation passage; A second communication portion capable of communicating outside air, provided so as to be able to open and close the second communication portion, blocking the second communication portion in a first state, and blocking the second communication portion in a second state; Open the communication section of the upper side and draw air from the second communication section by the indoor blower. Air conditioner, wherein the or ambient air from the other ventilation hole, further comprising a second Danba to as out come blown into the room

5. In Claim 4, a temperature sensor that outputs a signal corresponding to a room temperature, and a temperature setting unit that can set a first temperature level and a second temperature level lower than the first temperature level, respectively. When the output signal from the temperature sensor exceeds the first temperature level set by the temperature setting means, the first damper and the second damper are opened, and the temperature falls below the second temperature level. An air conditioner, comprising: a control circuit that controls the first damper and the second damper to close when the first damper is closed.

6. The air-conditioning apparatus according to claim 1, wherein the housing is located outside the room rather than inside the room at the time of installation.

7. In Claim 1, the indoor heat exchanger is disposed above and the outdoor heat exchanger is disposed below, and the drain water generated when the indoor heat exchanger is used as an evaporator generates the outdoor heat exchanger. An air conditioner characterized by being configured to be dropped on an exchanger.

8. In Claim 1, a bypass path connecting the refrigerant pipe on the discharge side of the compressor and the refrigerant pipe on the suction side of the compressor, and a bypass path provided in the bypass path from the discharge side of the compressor. An air conditioner, comprising: a check valve for preventing refrigerant from flowing to a suction side of the compressor.

9. A housing having an indoor ventilation path formed to extend from one end to the other end, and provided at one end of the housing so as to open toward the interior of the room when used. A first ventilation port that communicates with the ventilation path, a second ventilation port that is provided at the other end of the housing so as to open toward a room when in use, and communicates with the room-side ventilation path; An indoor heat exchanger provided in the inside ventilation passage, and air provided in one of the first and second ventilation openings provided in the indoor ventilation passage, and discharged from the other ventilation opening. An indoor-side blower to be provided, and an outside air outside the indoor-side ventilation path in the housing, and a direction in which the first and second ventilation ports are connected to the indoor heat exchanger. An outdoor heat exchanger disposed at a different position from the other, and ventilating outside air to this outdoor heat exchanger Using an air conditioner that uses a refrigeration cycle equipped with an outer blower, a room in which convection is generated by a heat-generating device is introduced into the room where the convection is promoted, and the indoor air inlet and cooling of the air conditioner are increased. A method for installing an air conditioner, characterized in that the wind outlet is oriented and mounted.

10. In claim 9, the indoor air suction port is disposed above the room, A method for installing an air conditioner, wherein a cooling air outlet is directed downward in a room.