JPH11294893A - Outdoor unit and air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a clean operation of a gas heat pump type air conditioner by providing an odor countermeasure catalyst for removing odor components contained in an exhaust gas system in the exhaust gas system. SOLUTION: In a process where exhaust gas discharged from a gas engine 41 passes through an odor catalytic converter 61, odor components are removed from the exhaust gas by an odor countermeasure catalyst, so that deterioration of an environment caused by odor generated by odor gas is prevented and the environment protection is maintained. Besides, the higher the exhaust gas temperature is, the more effective is a platinum catalyst employed as the odor countermeasure catalyst, odor components are removed more effectively by providing the odor catalytic converter 61 on the exhaust gas inflow side of an exhaust gas heat exchanger 54. Further, the odor component converter 61 is designed to be detachable from the exhaust gas heat exchanger 54, so that the odor countermeasure catalyst can be replaced with a new one in the case the capacity thereof is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas heat pump type air conditioner in which a compressor is driven by a gas engine and exhaust gas of the gas engine is used as a heating source of a liquid refrigerant during a heating operation. .

[0002]

2. Description of the Related Art An air conditioner that performs cooling and heating using a heat pump includes a refrigerant circuit including elements such as an indoor heat exchanger, a compressor, an outdoor heat exchanger, and an expansion valve. Cooling and heating of the room is realized by exchanging heat in the indoor heat exchanger and the outdoor heat exchanger while the refrigerant passes through this circuit. Further, the refrigerant circuit may be provided with a refrigerant heater for directly heating the refrigerant itself, instead of relying solely on receiving the heat of the refrigerant by the outdoor heat exchanger (during the heating operation). .

In recent years, as a power source for a compressor in the above-described refrigerant circuit, a type using a gas engine instead of a commonly used electric motor has been developed. An air conditioner using this gas engine is generally called a gas heat pump type air conditioner (hereinafter abbreviated as GHP). According to this GHP, a relatively inexpensive gas can be used as fuel, so that the running cost does not increase as in an air conditioner (hereinafter abbreviated as EHP) equipped with a compressor using an electric motor. Costs can be reduced.

Further, in the GHP, for example, during heating operation, if the heat of the high-temperature exhaust gas discharged from the gas engine is used as a heating source for the refrigerant, it is possible to obtain an excellent heating effect, Use efficiency can be improved. By the way, the heating capacity at the time of low outside air temperature is about 1.2 to 1.5 times higher than the EHP. Also,
By introducing such a mechanism, in the refrigerant circuit,
It is not necessary to specially install equipment such as the above-described refrigerant heater.

[0005] In addition, in the GHP, the so-called defrosting operation of the outdoor heat exchanger required for the heating operation is also performed.
It can be carried out using the exhaust heat of the engine. Generally, in the defrost operation in the EHP, the heating operation is stopped and the cooling operation is temporarily performed to remove the frost from the outdoor heat exchanger. In this case, since the cool air is blown into the room, the comfort of the room environment is impaired. In the GHP, the continuous heating operation becomes possible due to the above-described circumstances, and there is no occurrence of a problem that is a concern in the EHP.

[0006]

Although the GHP has many advantages as described above, the following problems have been pointed out with respect to the conventional GHP.

[0007] The gas engine provided in the GHP is LN
G or LPG is used as a fuel for driving, and when these gases are used as fuel, burning odors are generated. Since the outdoor unit including the gas engine is installed on the roof of a building or the like, when the exhaust gas is released, the odor may be diffused to the surroundings, and the environment may be deteriorated.

Although the exhaust gas contains a trace amount of nitrogen oxides (hereinafter referred to as NOx), the GHP uses gas and air in a fuel intake system for supplying gas and air as fuel to a gas engine. When mixing is performed, a technique is employed in which the amount of air is made larger than the stoichiometric mixing ratio, and the mixture is subjected to lean combustion inside the gas engine to suppress the generation of NOx. However, in recent years, calls for environmental protection have been increasing, and GHPs have been required to further reduce NOx.

The present invention has been made in view of the above circumstances, and an object of the present invention is to remove unnecessary products such as odor components and nitrogen oxides contained in exhaust gas as much as possible, thereby achieving GHP. The aim is to realize clean operation of the vehicle.

[0010]

The present invention has the following arrangement as means for solving the above-mentioned problems. That is, the outdoor unit according to claim 1 performs an heat exchange between the outdoor heat exchanger that performs heat exchange between the outdoor air and the refrigerant, and heat exchange between the outdoor heat exchanger or the indoor air and the refrigerant. A compressor for sending a high-temperature and high-pressure gas refrigerant to the indoor heat exchanger;
A gas engine that drives the compressor, an exhaust gas heat exchanger that collects heat of exhaust gas discharged from the gas engine into cooling water of the gas engine and uses it for heating refrigerant, and an exhaust gas heat exchanger And an exhaust gas system that guides the exhaust gas deprived of heat by passing the exhaust gas to the outside, wherein the exhaust gas system is provided with an odor control catalyst for removing odor components contained in the exhaust gas. It is characterized by having.

[0011] In the outdoor unit according to the first aspect, the odor component contained in the exhaust gas is removed by the odor control catalyst in the process of passing the exhaust gas through the exhaust gas system.
The odor emitted by the exhaust gas is suppressed.

According to a second aspect of the present invention, there is provided an air conditioner for exchanging heat between outdoor air and a refrigerant, and exchanging heat between the outdoor heat exchanger or indoor air and a refrigerant. A compressor for delivering a high-temperature and high-pressure gas refrigerant to an indoor heat exchanger to be performed;
A gas engine that drives the compressor, an exhaust gas heat exchanger that collects heat of exhaust gas discharged from the gas engine into cooling water of the gas engine and uses it for heating refrigerant, and an exhaust gas heat exchanger An outdoor unit including an exhaust gas system that guides exhaust gas deprived of heat through the outdoor unit, an indoor unit including the indoor heat exchanger, and a fan that circulates indoor air. An air conditioner,
An odor control catalyst for removing odor components contained in the exhaust gas is provided in the exhaust gas system.

In the air conditioner according to the second aspect, in the process of passing the exhaust gas through the exhaust gas system, the odor component contained in the exhaust gas is removed by the odor control catalyst, and the odor generated by the exhaust gas is suppressed.

The air conditioner according to a third aspect of the present invention is characterized in that the odor control catalyst is disposed between the gas engine and the exhaust gas heat exchanger in the exhaust gas system.

In the air conditioner according to the third aspect, since the odor control catalyst is more effective as the exhaust gas temperature is higher, the odor control catalyst is used between the gas engine and the exhaust gas heat exchanger in the exhaust gas system. And an exhaust gas heat exchanger through which high-temperature exhaust gas flows facilitates the removal of odor components.

According to a fourth aspect of the present invention, there is provided an outdoor unit for exchanging heat between outdoor air and refrigerant, and exchanging heat between the outdoor heat exchanger or indoor air and refrigerant. A compressor that sends a high-temperature and high-pressure gas refrigerant to an indoor heat exchanger, a gas engine that drives the compressor, and a refrigerant that collects heat of exhaust gas discharged from the gas engine into cooling water of the gas engine. An exhaust gas heat exchanger used for heating
An exhaust gas system that passes exhaust gas deprived of heat by passing through the exhaust gas heat exchanger to the outside, wherein the exhaust gas system discharges exhaust gas into water and discharges the exhaust gas into the exhaust gas. It is characterized in that exhaust gas purifying means for dissolving and removing water-soluble products contained in water is provided.

In the outdoor unit according to the fourth aspect, when the exhaust gas is discharged into water, water-soluble products such as NOx contained in the exhaust gas are dissolved in the water and removed from the exhaust gas. As a result, the exhaust gas is purified.

According to a fifth aspect of the present invention, there is provided an air conditioner for exchanging heat between outdoor air and a refrigerant, and exchanging heat between the outdoor heat exchanger or indoor air and a refrigerant. A compressor for delivering a high-temperature and high-pressure gas refrigerant to an indoor heat exchanger to be performed;
A gas engine that drives the compressor, an exhaust gas heat exchanger that collects heat of exhaust gas discharged from the gas engine into cooling water of the gas engine and uses it for heating refrigerant, and an exhaust gas heat exchanger An outdoor unit including an exhaust gas system that guides exhaust gas deprived of heat through the outdoor unit, an indoor unit including the indoor heat exchanger, and a fan that circulates indoor air. An air conditioner,
The exhaust gas system is characterized in that exhaust gas purifying means for discharging exhaust gas into water and dissolving and removing water-soluble products in water is provided.

In the air conditioner according to the fifth aspect, when the exhaust gas is discharged into water, the N contained in the exhaust gas is reduced.
Water-soluble products such as Ox dissolve in water and are removed from the exhaust gas to purify the exhaust gas.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The GHP (gas heat pump type air conditioner) 1 shown in FIG. 3 is mainly composed of an indoor unit 10 and an outdoor unit 20. The indoor unit 10 includes an indoor heat exchanger that evaporates and evaporates a low-temperature and low-pressure liquid refrigerant to remove heat from indoor air during a cooling operation, and condenses and liquefies a high-temperature and high-pressure gas refrigerant to heat indoor air during a heating operation. 11 and a fan 12 for circulating indoor air.

The outdoor unit 20 includes a refrigerant circuit section 30 inside which a refrigerant circuit is further formed, and a gas engine 4.
The gas engine unit 40 mainly includes a gas engine unit 40 and has components attached thereto.

In the refrigerant circuit section 30, the outdoor heat exchanger 3
1, water heat exchanger 32, compressor 33, accumulator 3
4, four-way valve 35, oil separator 36, expansion valve 37,
And a fan 39. Outdoor heat exchanger 31
In the cooling operation, the high-temperature and high-pressure gas refrigerant is condensed and liquefied to radiate heat to the outdoor air. On the contrary, in the heating operation, the low-temperature and low-pressure liquid refrigerant evaporates and removes heat from the outdoor air. That is, at the time of each operation of the cooling and heating, the outdoor heat exchanger 3
1 performs the reverse operation of the indoor heat exchanger 11 described above.

The water heat exchanger 32 is provided in order to recover heat of the refrigerant from the cooling water of the gas engine 41 described later. That is, at the time of the heating operation, the refrigerant does not rely only on the heat exchange in the outdoor heat exchanger 31 but also receives heat from the cooling water of the gas engine 41, so that the effect of the heating operation can be further enhanced. It becomes possible.

The compressor 33 compresses the gas refrigerant sucked from either the indoor heat exchanger 11 or the outdoor heat exchanger 31 and discharges it as a high-temperature and high-pressure gas refrigerant. Thereby, at the time of cooling, even if the outside air temperature is high, the refrigerant can radiate heat to the outdoor air through the outdoor heat exchanger 31,
At the time of heating, heat can be given to indoor air through the indoor heat exchanger 11.

The accumulator 34 is provided for storing a liquid component contained in the gas refrigerant flowing into the compressor 33. Further, the four-way valve 35 is provided for selectively sending out the high-temperature and high-pressure gas refrigerant compressed in the compressor 33 to either the indoor heat exchanger 11 or the outdoor heat exchanger 31. The oil separator 36 separates oil contained in the refrigerant.

The expansion valve 37 depressurizes and expands the high-temperature and high-pressure liquid refrigerant sent from the outdoor heat exchanger 31 during the cooling operation to make it a low-temperature and low-pressure liquid refrigerant. The fan 39 is provided to introduce outdoor air into the outdoor unit 20 and to circulate the air to the outdoor heat exchanger 31 and a radiator 53 described later.

On the other hand, in the gas engine section 40, a cooling water system 50, an exhaust gas system 60,
Four systems, a fuel intake system 70 and an engine oil system 80, are provided. The gas engine 41 includes the refrigerant system 30
It is connected to a compressor 33 installed therein by a shaft or a belt or the like, and power is transmitted from the gas engine 41 to the compressor 33.

The cooling water system 50 includes a water pump 51, a reservoir tank 52, and a radiator 53, and is a system for cooling the gas engine 41 with cooling water passing through a circuit constituted by these components. The water pump 51 is a gas engine 4
It is provided to circulate one cooling water through the circuit.
The reservoir tank 52 is used to temporarily store an excess of the cooling water flowing through the circuit, or to supply the cooling water when the circuit runs short of the cooling water. The radiator 53 is integrally formed with the outdoor heat exchanger 31 and is provided to release heat taken from the gas engine 41 by the cooling water to the outside air.

The cooling water system 50 is provided with an exhaust gas heat exchanger 54 in addition to the above configuration. This is provided to recover the heat of the exhaust gas into the cooling water. The cooling water system 50 includes the water heat exchanger 3 described above.
2 are provided, and are arranged so as to straddle both the refrigerant system 30 and the cooling water system 50. For these reasons, during the heating operation, the cooling water not only removes heat from the gas engine 41 but also recovers heat from the exhaust gas, and the recovered heat is transferred from the cooling water to the refrigerant through the water heat exchanger 32. The mechanism is given.

The exhaust gas system 60 includes the odor catalytic converter 6
1. An exhaust gas purifying tank (exhaust gas purifying means) 62, a muffler 63, and an exhaust top 64, and a system for guiding exhaust gas discharged from the gas engine 41 to the outside. The odor catalytic converter 61 is provided for removing odor components contained in the exhaust gas. The exhaust gas purification tank 62 is
It is provided to remove water-soluble products among NOx and the like contained in the exhaust gas. The muffler 63 is provided to absorb noise caused when the gas engine 41 discharges exhaust gas. The exhaust top 64 is provided so as to separate moisture contained in the exhaust gas and not to scatter the moisture into the external environment. From the viewpoint of this function, the exhaust top 64 is sometimes called an exhaust separator.

The fuel intake system 70 includes a gas regulator 7
1, solenoid valve 72, intake box 73, air cleaner 74
And a system for supplying fuel and air to the gas engine 41. The gas regulator 71 includes an electromagnetic valve 72
It is provided for adjusting the delivery pressure of the gas supplied from the outside of the outdoor unit 20 via the. On the other hand, the intake box 73 is provided to take in air from outside the outdoor unit 20. In addition, the intake box 73
Also has the function of suppressing the generation of noise during intake. The air cleaner 74 is provided for removing dust from the air thus sucked. As described above, the gas and air supplied from outside are respectively shown in FIG.
As shown in the figure, the gas regulator 71 and the air cleaner 7
After passing through No. 4, they are mixed and sent to the gas engine 41 to be used as fuel.

The engine oil system 80 has an oil sub-tank 81 and is provided for supplying lubricating oil to the gas engine 41. An oil pan 41 a is provided below the gas engine 41 to receive the oil in the oil sub tank 81.

The outdoor unit 20 of the above configuration
4 and 5 are housed in the outdoor unit housing 21 as shown in FIGS. As shown in these figures, the interior of the outdoor unit housing 21 is
The upper and lower parts are divided into two by two. These upper and lower spaces are now called the heat exchange room 23 and the machine room 24, respectively.
I will call it. 4 and 5, the illustration of the piping as described in FIG. 3 is omitted.

The heat exchange chamber 23 is provided with an outdoor heat exchanger 31 and a radiator 53 so as to cover all the front and back surfaces of the outdoor unit housing 21. The outdoor heat exchanger 31 and the radiator 53 have an integrated structure as described above. In addition, the muffler 63, the exhaust top 64, and the intake box 7 of the elements shown in FIG.
3 and the like are provided.

In the heat exchange chamber 23, in addition to the components described above, a fan 91, a fan motor 92, and a fan fixture 9 are provided.
3 are provided. The fan 91 is attached to an output shaft of a fan motor 92 attached to a fan attachment 93 suspended from a ceiling surface of the outdoor unit housing 21. In the present embodiment, two sets of the fans 91 are mounted. Openings 94 are formed in the ceiling surface of the outdoor unit housing 21 so as to correspond to the mounting positions of the fans 91.
The opening 94 is provided with a mesh cover 95. The fan 91 assists the operation of the outdoor heat exchanger 31.

In the heat exchange chamber 23, two ventilation boxes 96 are provided on the partition plate 22, and a ventilation fan 97 is provided inside each of them. The ventilation box 96 and the ventilation fan 97 are provided to guide heat inside the machine room 24 to the heat exchange room 23. Therefore, the air heated in the machine room 24 is supplied to the ventilation fan 9.
6. The air is discharged to the outside of the outdoor unit housing 21 through the path of the heat exchange chamber 23 and the fan 91. Note that the intake box 73 is placed above the ventilation boxes 96. The air taken from the intake box 73 is
Gas engine 4 through the space between both ventilation boxes 96
1 to reach.

Next, the machine room 24 will be described.
Most of the components described in FIG. 3 and the components of each system are housed in the machine room 24. 4 and 5 show the compressor 33, the accumulator 34, the four-way valve 35, the oil separator 36 in the refrigerant circuit unit 30, and the gas engine 41 and the air cleaner 74 in the gas engine unit 40, respectively. .

In the machine room 24, a drain pipe 101 is provided in addition to the above components. The drain pipe 101 is a pipe that connects the opening 22 a provided in the partition plate 22 and the floor opening 25 of the outdoor unit housing 21.
This is achieved by the outdoor unit housing 2 through the ceiling opening 94 described above.
1 is provided to discharge rainwater that has entered inside to the exterior of the outdoor unit housing 21.

In the machine room 24, a base plate 102,
An anti-vibration rubber 103 is provided. The base plate 102 is a substantially square plate, and is used as a floor on which the components in the refrigerant circuit unit 30 and the gas engine unit 40 housed in the machine room 24 are mounted. This base plate 10
At the four corners of the lower surface 2, anti-vibration rubber 103 is arranged. Therefore, the base plate 102 and the vibration isolating rubber 103 are connected to the refrigerant circuit unit 30 and the gas engine
It has the function of suppressing the mechanical vibration generated from.

An exhaust gas system 60 arranged in the machine room 24
As shown in FIG. 1, an odor catalytic converter 61, an exhaust gas purifying tank 62, a muffler 63, and an exhaust top 64 are provided. Among them, the exhaust gas purifying tank 62, the muffler 63, and the exhaust top 64 are disposed on the exhaust gas outflow side of the exhaust gas heat exchanger 54, and the odor catalytic converter 61
Is disposed on the exhaust gas inflow side of the exhaust gas heat exchanger 54 and is configured integrally with the exhaust gas heat exchanger 54.

The odor catalytic converter 61 is connected to an exhaust pipe 60a derived from the gas engine 41 and the exhaust gas heat exchanger 5
4 is interposed. As shown in FIG. 2, the odor catalytic converter 61 includes a honeycomb material made of alumina (or metal) coated with platinum (Pt) as an odor control catalyst 65. In the catalytic converter 61, circular flanges 61b, 61b are provided outward at both ends of a cylindrical main body 61a, and these two flanges 61b are provided at the end of the exhaust pipe 60a. The flanges 60b and the flanges 54a provided on the exhaust gas heat exchanger 54 respectively correspond to the flanges 60b and the flanges 54a. .

The exhaust gas purifying tank 62 is filled with water W, and the water W is provided with the tip of an exhaust pipe 60c drawn from the exhaust gas heat exchanger 54 inserted therein. . A nozzle 67 having a plurality of discharge holes (not shown) is provided at the end of the exhaust pipe 60c so that the exhaust gas discharged into the water is innumerably small bubbles.

Above the exhaust gas purifying tank 62, there is provided an exhaust pipe 68 for discharging the gas discharged from the nozzle portion 67 and passing through the water to the atmosphere. A muffler 63 is attached to an intermediate portion of the exhaust pipe 68, and an exhaust top 64 is attached to a tip of the exhaust pipe 68. The water collected at the exhaust top 64 is returned to the exhaust gas purifying tank 62 through a path different from the exhaust pipe. Also,
A drain filter 69 containing a neutralizing agent for neutralizing acidic water is connected to the exhaust gas purifying tank 62. Drain exceeding a certain water level in the septic tank flows into the drain filter 69, and is discharged from the drain pipe 69a to the outside.

The operation of the GHP 1 having the above-described configuration during the operation of each of the indoor cooling and the heating will be described. First, during the cooling operation, the four-way valve 35 of the refrigerant circuit unit 30 is connected to the compressor 33 and the outdoor heat exchanger 3.
1. The indoor heat exchanger 11 and the accumulator 34 are connected to each other. In this state, the high-temperature and high-pressure gas refrigerant discharged from the compressor 33 is sent to the outdoor heat exchanger 31.

The high-temperature and high-pressure gas refrigerant is condensed and liquefied in the outdoor heat exchanger 31 and radiates heat to outdoor air to become a high-temperature and high-pressure liquid refrigerant. Further, the high-temperature and high-pressure liquid refrigerant is reduced in pressure in the process of passing through the expansion valve 37, becomes a low-temperature and low-pressure liquid refrigerant, and is sent to the indoor unit 10.

The low-temperature and low-pressure liquid refrigerant sent to the indoor unit 10 is evaporated and vaporized in the indoor heat exchanger 11, cools by removing heat from the indoor air, and becomes a low-temperature and low-pressure gas refrigerant. It is sent to the refrigerant circuit unit 30 inside.

The low-temperature and low-pressure gas refrigerant sent to the refrigerant circuit unit 30 flows into the accumulator 34 via the four-way valve 35,
After the liquid component is separated, it is sucked into the compressor 33. The gas refrigerant sucked into the compressor 33 is compressed by the operation of the compressor 33, becomes a high-temperature and high-pressure gas refrigerant, and is sent to the outdoor heat exchanger 31 again.

On the other hand, during the heating operation, the four-way valve 35
Is in a state where the compressor 33 and the indoor heat exchanger 11 are connected, and the outdoor heat exchanger 31 and the accumulator 34 are connected. In this state, the high-temperature and high-pressure gas refrigerant discharged from the compressor 33 is supplied to the indoor heat exchanger 1 of the indoor unit 10.
Sent to 1.

The high-temperature and high-pressure gas refrigerant is condensed and liquefied in the indoor heat exchanger 11, radiates heat to the indoor air to warm it, and then becomes a high-temperature and high-pressure liquid refrigerant to be sent to the refrigerant circuit unit 30 in the outdoor unit 20. Can be The high-temperature and high-pressure liquid refrigerant sent to the refrigerant circuit unit 30 flows into the outdoor heat exchanger 31. In the outdoor heat exchanger 31, the high-temperature and high-pressure liquid refrigerant takes heat from the outside air and evaporates to become a low-temperature and low-pressure gas refrigerant.

The low-temperature and low-pressure gas refrigerant is supplied to the water heat exchanger 32.
And heat is exchanged with the engine cooling water to be further heated to become a high-temperature and high-pressure gas refrigerant. The high-temperature and high-pressure gas refrigerant flows into the accumulator 34, where the liquid component is separated, and then sucked into the compressor 33. The gas refrigerant sucked into the compressor 33 is compressed, becomes a high-temperature and high-pressure gas refrigerant, and is sent to the indoor heat exchanger 11 again.

The gas engine 41 is in a driving state for transmitting power to the compressor 33 irrespective of a cooling operation or a heating operation, and the exhaust gas system 60 constantly discharges exhaust gas generated by combustion. Have been done. The exhaust gas immediately after being discharged from the gas engine 41 has a high temperature of 550 to 600 ° C., and this high-temperature exhaust gas flows into the odor catalytic converter 61, and after the odor component is removed by the odor control catalyst 65, the exhaust gas is exhausted. It flows into the heat exchanger 54. The exhaust gas that has flowed into the exhaust gas heat exchanger 54 is deprived of heat by the engine cooling water, cooled to 120 to 150 ° C., and flows into the exhaust gas processing tank 62.

The exhaust gas that has flowed into the exhaust gas treatment tank 62 is discharged into the water from the nozzle portion 67 in the form of countless bubbles. At this time, water-soluble products of NOx and the like contained in the exhaust gas are dissolved in the water during the dive in the water, and are removed from the exhaust gas. The exhaust gas from which the water-soluble products have been removed and floated out of the water flows into the exhaust pipe 68 from the exhaust gas purification tank 62, passes through the muffler 63, and is muffled.
The exhaust gas is released from the exhaust top 64 to the atmosphere. At this time, since the moisture collected at the exhaust top 64 may still contain products such as NOx, the moisture is returned to the exhaust gas purifying tank 62 along a path different from the exhaust pipe 64. The sewage accumulated in the exhaust gas purifying tank 62 flows into the drain filter 69 when the water level exceeds a certain level, is neutralized, and is drained.
a is discharged outside.

According to the GHP 1 configured as described above, while the exhaust gas discharged from the gas engine 41 passes through the odor catalytic converter 61, the odor control catalyst 65
As a result, the odor component is removed from the exhaust gas, so that it is possible to prevent the deterioration of the environment due to the odor generated by the exhaust gas and to preserve the surrounding environment. In addition, the platinum catalyst employed as the odor control catalyst 65 is more effective when the exhaust gas temperature is higher. Therefore, by disposing the odor catalyst converter 61 on the exhaust gas inlet side of the exhaust gas heat exchanger 54, the odor component can be reduced. It can be effectively removed. Further, since the odor catalytic converter 61 is detachable from the exhaust gas heat exchanger 54, if the performance of the odor control catalyst 65 is reduced, it can be replaced with a new one.

In the process in which the exhaust gas passing through the exhaust gas heat exchanger 54 dives underwater filled with the exhaust gas purifying tank 62, water-soluble products such as NOx are removed from the exhaust gas. It is possible to reduce the amount of products such as NOx contained in the exhaust gas emitted into the exhaust gas, thereby preserving the surrounding environment.

In the above embodiment, the intake catalytic converter 61 is formed integrally with the exhaust gas heat exchanger 54, but they may be formed separately. Also,
Although a platinum catalyst is employed as the odor control catalyst 65, other substances may be employed. Further, the muffler 63 is provided in the exhaust pipe 68. However, the muffler 63 may be omitted as long as the muffler can be sufficiently silenced while passing through the exhaust gas purification tank 62.

[0056]

As described above, according to the outdoor unit of the first aspect, the odor control catalyst is disposed in the exhaust gas system discharged from the gas engine, and the exhaust gas discharged from the gas engine is provided. As the gas passes through the exhaust gas system, the odor component is removed from the exhaust gas by the odor control catalyst, so it is possible to prevent the deterioration of the environment due to the odor generated by the exhaust gas and to protect the surrounding environment it can.

According to the air conditioner of the second aspect, the odor component contained in the exhaust gas passes through the exhaust gas system provided in the outdoor unit, and the odor component is removed from the exhaust gas by the odor control catalyst. Since the air conditioner is removed, it is possible to prevent the environment from being deteriorated due to the odor generated by the exhaust gas, thereby realizing a cleaner operation of the air conditioner.

According to the air conditioner of the third aspect, since the odor control catalyst is effective as the exhaust gas temperature is high, the odor control catalyst is disposed between the gas engine and the exhaust gas heat exchanger. Thereby, the odor component contained in the exhaust gas can be more effectively removed.

According to the outdoor unit of the fourth aspect,
The exhaust gas system is provided with exhaust gas purifying means for dissolving and removing water-soluble products contained in the exhaust gas in water, and water-soluble products among NOx and the like contained in the exhaust gas are provided. Since it is removed from the exhaust gas, the amount of NOx and the like contained in the exhaust gas released into the atmosphere can be reduced, thereby preserving the surrounding environment.

According to the air conditioner of the fifth aspect, the exhaust gas system in the outdoor unit is provided with exhaust gas purifying means for dissolving water-soluble products contained in the exhaust gas in water and removing the same. NOx contained in exhaust gas
And the like, the water-soluble products are removed from the exhaust gas, so that the amount of NOx and the like contained in the exhaust gas released into the atmosphere can be reduced, and thereby the cleaner operation of the air conditioner can be achieved. Can be realized.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of an air conditioner according to the present invention, and is a schematic configuration diagram showing a gas engine and an exhaust gas system provided in an outdoor unit.

FIG. 2 is a perspective view showing a configuration of an odor catalytic converter.

FIG. 3 is a schematic configuration diagram illustrating a configuration of an air conditioner.

FIG. 4 is a side sectional view showing a configuration of an outdoor unit.

FIG. 5 is a side sectional view showing the internal configuration of the outdoor unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 GHP 10 Indoor unit 11 Indoor heat exchanger 20 Outdoor unit 31 Outdoor heat exchanger 33 Compressor 41 Gas engine 54 Exhaust gas heat exchanger 60 Exhaust gas system 61 Odor catalytic converter 62 Exhaust gas purifying tank 65 Odor control catalyst

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Jiro Tanaka 3-1-1 Asahicho, Nishibiwajima-cho, Nishikasugai-gun, Aichi Prefecture Inside Mitsubishi Heavy Industries, Ltd. Air Conditioning Works

Claims (5)

[Claims] 1. An outdoor heat exchanger for exchanging heat between outdoor air and a refrigerant, and an outdoor heat exchanger for exchanging heat between the outdoor heat exchanger and an indoor air and a refrigerant. A compressor that sends out a gas refrigerant, a gas engine that drives the compressor, and exhaust gas heat that collects heat of exhaust gas discharged from the gas engine into cooling water of the gas engine and uses it for heating the refrigerant. An outdoor unit including an exchanger and an exhaust gas system that guides exhaust gas that has passed through the exhaust gas heat exchanger and has been deprived of heat, wherein the exhaust gas system includes an odor component contained in the exhaust gas. An outdoor unit comprising an odor control catalyst for removing odor. 2. An outdoor heat exchanger for exchanging heat between outdoor air and a refrigerant, and an outdoor heat exchanger for exchanging heat between the outdoor heat exchanger or the indoor air and the refrigerant. A compressor that sends out a gas refrigerant, a gas engine that drives the compressor, and exhaust gas heat that collects heat of exhaust gas discharged from the gas engine into cooling water of the gas engine and uses it for heating the refrigerant. An outdoor unit including an exchanger and an exhaust gas system that guides exhaust gas that has been deprived of heat by passing through the exhaust gas heat exchanger, and the indoor heat exchanger, and a fan that circulates indoor air. An air conditioner comprising: an indoor unit including: an air conditioner, wherein an odor control catalyst for removing an odor component contained in exhaust gas is disposed in the exhaust gas system. . 3. The air conditioner according to claim 2, wherein the odor control catalyst is disposed between the gas engine and the exhaust gas heat exchanger in the exhaust gas system. 4. An outdoor heat exchanger for exchanging heat between outdoor air and a refrigerant, and an outdoor heat exchanger for exchanging heat between the outdoor heat exchanger and the indoor air and the refrigerant. A compressor that sends out a gas refrigerant, a gas engine that drives the compressor, and exhaust gas heat that collects heat of exhaust gas discharged from the gas engine into cooling water of the gas engine and uses it for heating the refrigerant. An outdoor unit including a heat exchanger and an exhaust gas system that guides exhaust gas that has passed through the exhaust gas heat exchanger and has been deprived of heat, wherein the exhaust gas system discharges exhaust gas into water. An outdoor unit provided with exhaust gas purifying means for dissolving and removing water-soluble products contained in exhaust gas in water. 5. An outdoor heat exchanger for exchanging heat between outdoor air and a refrigerant, and an outdoor heat exchanger for exchanging heat between the outdoor heat exchanger or the indoor air and the refrigerant. A compressor that sends out a gas refrigerant, a gas engine that drives the compressor, and exhaust gas heat that collects heat of exhaust gas discharged from the gas engine into cooling water of the gas engine and uses it for heating the refrigerant. An outdoor unit including an exchanger and an exhaust gas system that guides exhaust gas that has been deprived of heat by passing through the exhaust gas heat exchanger, and the indoor heat exchanger, and a fan that circulates indoor air. An air conditioner comprising: an indoor unit including: an exhaust system configured to exhaust the exhaust gas into water and dissolve and remove water-soluble products contained in the exhaust gas in the exhaust gas system. Gas purifying means is provided. Air conditioner that.