JPH10339511A - Heat pump system of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To raise the operation efficiency, and also, prevent the saturation of refrigerant gas at cooling operation in summer, and prevent the adhesion of frost to the evaporator within an outdoor machine at warming operation in winter. SOLUTION: This air conditioner comprise a compressor 1, a capacitor 2, and an evaporator 3. In this case, the compressor 1 and the capacitor 2 are connected with each other by a gas pipe 6 through a four-way valve 10, and a capillary tube 4 installed at the refrigerant gas outlet of the capacitor 2 and an additional capacitor 9 are connected with each other by a gas pipe 7, and the additional capacitor 9 and the capillary tube 5 of the evaporator 3 are connected with each other by a gas pipe 7', and the gas outlet of the evaporator 3 and a compressor 1 are connected with each other by a gas pipe 8 through the four-way valve 10, thus it is made possible to switch cooling operation and heating operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a refrigerant gas HCFC
(Hydro-chloro-fluoro-carbon) 22 or refrigerant gas HFC (hydro-fluoro-carbon) alone or as a mixture of two or three kinds to adjust the operating pressure and operating temperature to the refrigerant gas HCFC 22, H
Efficiency improvement in operating a heat pump type air conditioner using either FC refrigerant gas or a mixture of HCFC and HFC and preventing saturation of refrigerant gas in summer and cooling operation, and in winter and heating operation The present invention relates to a heat pump type air conditioner that prevents frost from adhering to a condenser in an outdoor unit that evaporates refrigerant gas. Also, operate when there is excess power, store heat in cold or hot water,
The present invention relates to a heat pump type air conditioner that can perform cooling and heating operations when necessary.

[0002]

2. Description of the Related Art In a current heat pump type air conditioner, in a cooling operation, refrigerant gas discharged from a compressor is sent to a condenser by a four-way valve and condensed, and decompressed by a capillary tube installed at a refrigerant gas inlet of an evaporator. Into the evaporator, where it evaporates and returns to the compressor.In the heating operation, the refrigerant gas discharged from the compressor is switched by a four-way valve and sent to the evaporator. Is condensed, decompressed by a capillary tube installed at the refrigerant gas inlet of the condenser, enters the condenser, and the condenser evaporates as an evaporator and is returned to the compressor.

[0003] In a cooling operation in summer when the air temperature is high, heat exchange in the heat pump type air conditioner decreases the cooling capacity due to insufficient heat exchange in the condenser, and the operating pressure increases to increase the power value. Refrigerant gas may be saturated and operation may not be possible, or gas leakage may occur.
Further, in the heat pump type air conditioner, the flow of the refrigerant gas is reversed in the heating operation with respect to the cooling operation, and the condenser becomes an evaporator, so when the heat exchange capacity of the condenser is increased, when the condenser is operated as an evaporator. The refrigerant gas which has absorbed a large amount of heat and returns to the compressor has no endothermic calories and cannot cool the compressor. In the heating operation, in the winter, refrigerant gas is evaporated by a condenser in the outdoor unit to absorb heat. However, if the atmospheric temperature is low, the heat absorption capacity is reduced and frost adheres to the condenser.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a heat pump type air conditioner in which only the refrigerant gas condensing capacity is increased during a cooling operation and a heating operation. To prevent saturation, in winter, additional during heating operation, additional hot air from the increased condenser is sent to the condenser that will be the evaporator, and the temperature of the atmosphere that exchanges heat with the condenser is increased, and frost adheres to the condenser In addition to improving the performance of the heat pump type air conditioner, the heat dissipation calorie from the additional and increased condenser is prevented.

[0005]

According to the first aspect of the present invention,
In a heat pump type air conditioner comprising a compressor 1, a condenser 2, and an evaporator 3, the compressor 1 and the condenser 2 are connected by a gas pipe 6 through a four-way valve 10, and a capillary tube 4 installed at a refrigerant gas outlet of the condenser 2 is additionally provided. Condenser 9 and gas pipe 7
And the additional condenser 9 and the capillary tube 5 of the evaporator 3 are connected by a gas pipe 7 ′, and the refrigerant gas outlet of the evaporator 3 and the compressor 1 are connected by a gas pipe 8 through a four-way valve 10 to perform cooling operation and heating. A heat pump type air conditioner characterized by being capable of switching operation,
The switching of the four-way valve 10 reverses the flow of the refrigerant gas, and can perform a cooling operation or a heating operation as desired. The refrigerant gas is the refrigerant gas of the HCFC 22, H
CFC mixed refrigerant gas, HFC single refrigerant gas, HFC
Mixed refrigerant gas of HFC and other substances, etc.
It is not particularly limited as long as it is a refrigerant gas that can operate a heat pump type air conditioner.

According to a second aspect of the present invention, there is provided a heat pump type air conditioner comprising a compressor, a condenser and an evaporator.
Are connected by a gas pipe 6 through a four-way valve 10 and a capillary tube 4 installed at a refrigerant gas outlet of the condenser 2.
And the additional condenser 9 are connected by a gas pipe 7, the additional condenser 9 and the capillary tube 5 of the evaporator 3 are connected by a gas pipe 7 ', and the refrigerant gas outlet of the evaporator 3 and the compressor 1 are connected by a four-way valve 10. A cooling pump and a heating operation can be switched by being connected by a gas pipe 8 through which the refrigerant gas is discharged from the compressor 1 to the gas pipe 6 side and sent to the condenser 2, Exchanges heat with the atmosphere in the pipe and condenses it.
Where the heat is released again to be further condensed, passed through a gas pipe 7 ′, decompressed by a capillary tube 5 installed in the evaporator 3, sent to the evaporator 3 and evaporated, and then the refrigerant gas is sent to the gas pipe 8 to evaporate the refrigerant gas. In the cooling operation to return to the compressor 1, the refrigerant gas is discharged from the compressor 1 to the gas pipe 8, and the evaporator 3 is operated as a condenser to be condensed, sent to the additional condenser 9 through the gas pipe 7 'and radiated again. The refrigerant gas is condensed, and the refrigerant gas is sent to the capillary tube 4 installed in the condenser 2 through the gas pipe 7, where it is decompressed and sent to the condenser 2.
A heating operation in which the condenser 2 is operated as an evaporator to evaporate and then returns to the compressor 1 through the gas pipe 6 can be switched by the four-way valve 10 for cooling operation,
In any case of the heating operation, the additional condenser 9 radiates the refrigerant gas to promote condensation.

According to a third aspect of the present invention, in addition to the first or second aspect of the present invention, the heat exchange capacity of the additional condenser 9 is at least 20% of the heat exchange capacity of the existing condenser 2,
Preferably, it is 30% or more. Even if the heat exchange capacity of the additional condenser 9 is too large, there is no particular adverse effect.

According to a fourth aspect of the present invention, in addition to the first, second and third aspects of the present invention, the inner diameter of the gas pipe circuit in the additional condenser 9 is changed by changing the inner diameter of the existing condenser 2 and the existing evaporator 3 Means for reducing the internal diameter of the gas pipe circuit to 80% or less, and a means for reducing the cross-sectional area to 64% or less. Also in this case, the inner diameter of the pipe is within 70%,
When the cross-sectional area is reduced to 49% or less, the condensation is further improved.

The invention according to claim 5 is the invention according to claims 1 to 4, wherein the shape of the gas pipe of the additional condenser 9 is specified, and a plurality of gas circuits 14 are installed in the gas pipe case 13 by extrusion molding or the like. It is characterized by doing.

According to a sixth aspect of the present invention, in addition to the first to fourth aspects, an additional condenser 9 is attached to the air suction side of the existing condenser 2 in the air-cooled heat pump so that the additional condenser 9 is attached thereto. After the sucked air passes through the additional condenser 9, it passes through the existing condenser 2, and the refrigerant gas exchanges heat with the air passing through the additional condenser 9 in the existing condenser 2, and then is sent to the additional condenser 9. It is designed to exchange heat with the atmosphere. In the case of blowing out air, the air sent by the blower fan 12 passes through the additional condenser 9 and then passes through the existing condenser 2. When the blower fan 12 is placed inside and the existing condenser 2 and the additional condenser 9 are installed on both sides, the air whose temperature has increased through the additional condenser 9 passes through the existing condenser 2.

According to a seventh aspect of the present invention, in the first to fourth aspects of the present invention, both the existing condenser 2 and the additional condenser 9 are water-cooled, and a water tank or a cooling tower 15 is installed, and a water pump 16 is provided. The water pipe 19 passes through the water tank 15 and the additional condenser 9, the existing condenser 2, and further reciprocates with the water tank 15 so that the water in the water tank passes through the additional condenser 9 and then passes through the existing condenser 2. is there. In cooling operation, the existing condenser 2 becomes a condenser, and the additional condenser 9 becomes a condenser.
The water in the water tank exchanges heat with the refrigerant gas in the additional condenser 9 to increase the temperature, and exchanges heat with the refrigerant gas in the existing condenser 2 to increase the water temperature. Although the water whose temperature has risen may be radiated by using the water tank 15 as a cooling tower, it can be circulated to make hot water and used for hot water supply. The water in the water tank 15 may be sent to the existing condenser 2 after passing through the additional condenser 9. However, when the additional condenser 9 is small, a part of the water passes through the additional condenser 9 and then passes through the existing condenser 9. The water is sent to the condenser 2, and the other water is sent directly to the existing condenser 2. Further, the water circuit is divided so that water is sent to both the additional condenser 9 and the existing condenser 2 from the beginning. In the heat exchange of the existing condenser 2 alone, the refrigerant gas does not condense when the water temperature rises, but condenses in the additional condenser 9. In the heating operation, the evaporator 3 and the additional condenser 9 serve as a condenser, and the condenser 2 serves as an evaporator. The refrigerant gas discharged from the compressor 1 is switched by the four-way valve 10 and
And the evaporator 3 becomes a condenser. After the refrigerant gas is condensed, the refrigerant gas is sent to the additional condenser 9 and exchanges heat with water sent from the water tank 15 to be further condensed and sent to the condenser 2. It evaporates, exchanges heat with the water sent from the water tank 15, absorbs heat, and lowers the water temperature.
(Water may be sent directly to both sides.) By this means, water having a higher temperature than the atmosphere, such as groundwater and waste heat water, is sent to the water tank 15 to improve heat exchange. When the temperature of the water that absorbs heat is high, the flow rate of the refrigerant gas can be increased, and the temperature of the evaporative gas can be increased. Therefore, the efficiency of the heat pump can be improved when the atmospheric temperature is low. At this time, the additional condenser 9 may be an air-cooled type. By improving the condensation with the additional condenser 9, the water temperature becomes high, and therefore, even if the refrigerant gas temperature becomes high, the refrigerant gas does not saturate and the operation is possible. Therefore, the water temperature is sometimes raised to 50 ° C. or more. Thus, the propagation of water algae or the growth of various bacteria can be prevented.

[0012] The invention according to claim 8 is the operation of the heat pump type air conditioner, wherein the compressor 1 and the condenser 2 are operated.
Are connected by a gas pipe 6 via a four-way valve 10, and the condenser 2 and the additional condenser 9 are connected by a gas pipe 7,
In a condenser in which the additional condenser 9 and the evaporator 3 are connected by a gas pipe 7 ′ and the evaporator 3 and the compressor 1 are connected by a gas pipe 8 through a four-way valve 10, the condenser 2 is water-cooled and a water tank 15 is connected. And a water pipe 19 via a water pump 16 connects the water tank 15 and the water-cooled condenser back and forth, circulates water in the water tank through the water-cooled condenser 2, is discharged from the compressor 1, and discharged from the condenser 2. Heat exchange with the refrigerant gas sent to the water tank, and gradually raises the water temperature in the water tank.
When the water temperature rises, the refrigerant gas becomes difficult to condense. However, the refrigerant gas condenses in the additional condenser 9 and the water tank 15
The water inside becomes hot water. This hot water is used directly for hot water supply or stored in hot water, and the fan coil 18 is used when necessary.
The water is circulated by a fan coil water pump 17 and circulated, and the fan coil 18 is operated to heat. The refrigerant gas circuit is switched by the four-way valve 10 using the device having the above-described means, and the refrigerant gas discharged from the compressor 1 is sent to the evaporator 3, and the evaporator 3 is operated as a condenser to condense the refrigerant gas. Then, it is sent to the additional condenser 9 to be further condensed, sent to the water-cooled condenser 2 and evaporated,
It exchanges heat with the water in the circulating water tank 15. Since the temperature of the water in the water tank 15 gradually decreases, cold water may be used. However, cold water or ice is used to store heat with cold heat, and the cold water is stored in the fan coil 18 when necessary. It is sent by the fan coil water pump 17 and circulated, and the fan coil 18 is operated to perform cooling. When the refrigerant gas is evaporated by the condenser 2, an expansion valve may be used instead of the capillary tube 4. When heating and cooling, hot water and cold water are not sent to the fan coil, but the gas in the pipe is raised with hot water and sent to the indoor unit for heating, and the gas in the pipe is cooled with cold water and sent to the indoor unit. It can be cooled down. Of course, the additional condenser 9 can be operated by an air-cooled type or a water-cooled type.

According to a ninth aspect of the present invention, in the eighth aspect, the water-cooled condenser 2 is installed in the water tank 15, or a gas pipe is installed and the gas pipe is used as a condenser. The water in the water tank is circulated by the water pump 16 to improve heat exchange. The device can be downsized.

In addition to directly cooling and warming the atmosphere with a heat pump type air conditioner, it also stores heat with warm water and heats it, and stores heat with cold water or ice for cooling. Hot water and cold water may be used as they are. Although it is on the condenser side, the same applies if a water tank is installed on the evaporator side. Water tanks can be installed on both the condenser side and the evaporator side to take out cold water and hot water at the same time. The same is true even when the capillary tube is replaced with an expansion valve.

A tenth aspect of the present invention is a modification of the first to sixth aspects in which the invention is mainly used for cooling, that is, for use in freezing and refrigeration. Switching of the circuit is performed by a defrosting operation. Even for a device dedicated to cooling, if the additional condenser 9 is installed in the condenser 2 and the cross-sectional area of the gas pipe of the additional condenser is reduced, the condensation of the refrigerant gas is improved and the cooling capacity is improved. This is particularly effective when HFC-based refrigerant gas is used. When the additional condenser 9 is installed so as to be attached to the air suction side of the condenser 2, the configuration is simple.

[0016]

DETAILED DESCRIPTION OF THE INVENTION A refrigerant gas HCFC2 according to FIG.
An embodiment of the present invention in a heat pump type air conditioner and heater using an air conditioner 2 will be described. The compressor 1 and the condenser 2 are connected by a gas pipe 6 via a four-way valve 10, and the capillary tube 4 installed at the refrigerant gas outlet of the condenser 2 and the additional condenser 9 are connected by a gas pipe 7.
Additional condenser 9 and capillary tube 5 of evaporator 3
Is connected by a gas pipe 7 ′, and a refrigerant gas outlet of the evaporator 3 and the compressor 1 are connected to a gas pipe 8 through a four-way valve 10.
Connect with. At this time, the additional condenser 9 is installed so as to be attached to the air suction side of the existing condenser 2 so that the air passes through the additional condenser 9 and then passes through the existing condenser 2.

In the cooling operation, the refrigerant gas discharged from the compressor 1 is sent to the gas pipe 6 by the four-way valve 10 and then sent to the condenser 2 to be condensed. The condensed refrigerant gas exits the capillary tube 4, passes through the gas pipe 7, and is sent into the additional condenser 9. The inner diameter of the gas pipe circuit inside the additional condenser 9 is changed to the gas pipe circuit inside the condenser 2. 8 of the inner diameter of the tube
Since the refrigerant gas is made as thin as 0%, preferably within 70%, the refrigerant gas passes through in a liquid state without evaporating. At this time, the additional condenser 9 becomes a condenser and the condensation further proceeds, and the refrigerant gas radiates all the calories and liquefies until there is no bubble. The refrigerant gas liquefied in a bubble-free state passes through a gas pipe 7 ′ and passes through a capillary tube 5 of the evaporator 3.
And enters the evaporator 3. Since the pipe diameter of the gas pipe circuit in the evaporator 3 is larger than the diameter of the gas circuit in the additional condenser 9, the refrigerant gas evaporates well. The refrigerant gas liquefied to a bubble-free state in the additional condenser 9 is
The amount of passage through the capillary tube increases, and a larger amount of refrigerant gas is sent to the evaporator 3 than before. The refrigerant gas that has released all of the calories in the additional condenser 9 evaporates well and absorbs a large amount of heat even if it is sent to the evaporator 3 more than ever. The refrigerant gas evaporated in the evaporator 3 returns to the compressor 1 through the gas pipe 8, but since the volume of the refrigerant gas compressed and discharged by the compressor 1 is constant, the density of the refrigerant gas increases. However, the volume is the same, the power value of the compressor 1 is not so high, and the cooling efficiency is improved. In summer, when the atmospheric temperature is high, the heat exchange in the condenser 2 is deteriorated, and the refrigerant gas is insufficiently condensed to operate at a high pressure to increase the power value, or the refrigerant gas is saturated and cannot be operated. However, gas leakage may occur, but the additional condenser 9 also radiates heat and condensed well. Therefore, high pressure operation due to insufficient condensation and refrigerant gas saturation do not occur.
The amount of heat released by the additional condenser 9 increases, and the amount of heat absorbed by the evaporator increases.

In the heating operation, the flow of the refrigerant gas is reversed by the four-way valve 10 in the cooling operation. That is, the refrigerant gas is discharged from the compressor 1 to the gas pipe 8 and sent to the evaporator 3. At this time, since the evaporator 3 becomes a condenser and dissipates heat, it is used as a heat source for heating, but the refrigerant gas is condensed. The condensed refrigerant gas exits the capillary tube 5 and is sent to the additional condenser 9 through the gas pipe 7 '. The diameter of the gas pipe circuit in the additional condenser 9 is the condenser 2 or the evaporator. Since the pipe diameter of the gas pipe circuit of No. 3 is reduced to 80% or less, and in some cases to 70% or less, it remains in a liquid state without evaporating, and the additional condenser 9 becomes a condenser, so that the condensation proceeds further. The refrigerant gas releases all the calories and liquefies to a bubble-free state. The refrigerant gas thus liquefied passes through the gas pipe 7 and is decompressed by the capillary tube 4 of the condenser 2 and enters the condenser 2, and the condenser 2 evaporates as an evaporator. Since the diameter of the gas pipe in the condenser 2 is larger than the diameter of the gas pipe in the additional condenser 9, the refrigerant gas evaporates well. The refrigerant gas that has evaporated and absorbed heat in the condenser 2 returns to the compressor 1 via the gas pipe 6 and the four-way valve 10.

As described above, even when the refrigerant gas is condensed in the condenser 2 in the cooling operation and evaporated in the evaporator 3, the refrigerant gas is condensed in the evaporator 3 and evaporated in the condenser 2 in the heating operation. Even in such a case, the additional condenser 9 always operates as a condenser to increase the amount of heat radiation and completely liquefy the refrigerant gas, thereby improving the performance of the heat pump. The heat exchange capacity on the condensing side always increases in both the cooling operation and the heating operation, but the heat exchange capacity on the evaporating side does not increase. If the heat exchange capacity of both the condenser and the evaporator is increased, especially during cooling operation, if the heat absorption capacity of the evaporator is increased, the refrigerant gas exiting the evaporator loses its cooling ability, and the compressor cannot be cooled. Generally, cooling of a compressor of a heat pump is performed by sending low-temperature evaporative gas having a cooling capacity to the compressor.

The heat exchange capacity of the additional condenser 9 is
Assuming that the heat exchange capacity of the ordinary condenser 2 is 30% or more, a mixed refrigerant gas in which two or three types of HCFC22 and HFC-based refrigerant gas are mixed to adjust the operating pressure and operating temperature to HCFC22, Regardless of whether the refrigerant gas mixed with HFC is used, the refrigerant gas of HFC alone or the refrigerant gas mixed with other gases is used, the refrigerant gas releases all calories and generates bubbles. The heat pump air conditioner can be operated efficiently by condensing it to a state where it does not exist.

In the cooling operation, the refrigerant gas discharged from the compressor 1 enters the condenser 2 through the gas pipe 6, condenses, and is sent to the additional condenser 9 through the capillary tube 4, so that the additional condenser 9
If the diameter of the gas pipe is equal to or larger than the diameter of the gas pipe of the condenser 2 and the evaporator 3, the refrigerant gas naturally evaporates. In the heating operation, the additional condenser 9 is attached to the outdoor unit. Therefore, if the pipe diameter of the condenser 2 is almost the same, the additional condenser 9 naturally evaporates. It is necessary to reduce the cross-sectional area of the diameter of the refrigerant gas circuit of the additional condenser 9. The flow rate of the liquefied gas flowing through the additional condenser 9 must be within 50% of the total flow rate flowing through the condenser 2 and the flow rate flowing through the capillary tube 4. That is, the diameter of the gas pipe of the additional condenser 9 is reduced within 50% of the area obtained by adding the pipe diameter of the condenser 2 and the pipe diameter of the capillary tube 4. If the number of gas circuits of the condenser 2 is plural or more, the total cross-sectional area is all. If the number of gas circuits of the additional condenser 9 is plural or more, the total cross-sectional area is all of course.

The volume of the refrigerant gas decreases as the state changes from the gas state to the liquid state. When the refrigerant gas enters the liquid state, heat exchange to the center of the pipe becomes difficult. Normally, the refrigerant gas discharged from the compressor 1 enters the condenser 2 in a completely gaseous state. Therefore, a thick gas pipe is required in the condenser 2. Since the volume of the refrigerant gas becomes smaller when it becomes a liquid state in the condenser 2, a required amount of the refrigerant gas flows even if the cross-sectional area of the gas pipe in the additional condenser 9 is small. By reducing the diameter of the gas pipe in the additional condenser 9 to within 80 to 70% of the diameter of the condenser 2 or the gas pipe of the evaporator 3, heat exchange in the additional condenser 9 is improved. Refrigerant gas does not evaporate even if heat is exchanged by lengthening the capillary tube. However, operation becomes impossible due to a large resistance value. The diameter of the gas circuit of the additional condenser 9 is set so that the resistance value does not increase without the refrigerant gas evaporating.

Usually, the diameter of the gas pipe in the additional condenser 9 is 80% of the diameter of the gas pipe of the condenser 2.
In addition to using a heat exchanger formed by extruding a plurality of gas circuits 14 into the gas pipe case 13 as shown in FIG. 3, the cross-sectional area of each gas circuit is reduced. , Heat exchange will be even better. When such a heat exchanger is used, an additional condenser 9 is connected to the gas pipe of the condenser 2.
Naturally, a gas circuit having a cross section of 64% to 49% or less is used.

The additional condenser 9 is usually placed in a separate case from the condenser 2 and usually uses a separate blower fan to send air to exchange heat. However, as shown in FIG. 2, if the additional condenser 9 is installed so as to be attached to the air suction side of the ordinary condenser, it can be easily installed and does not require a separate blower fan. The air is sucked by the existing blower fan 12 so as to pass through the normal condenser 2. As shown by arrows in FIG. 2, the air flows through the additional condenser 9 and then passes through the normal condenser 2. Will pass through. Even if the air is blown out to the additional condenser 9 to the blower, there is no problem. In the cooling operation, the refrigerant gas in the condenser 2 is discharged at a higher temperature than the compressor 1 so that the refrigerant gas has a high temperature and a large amount of heat is released. Since the refrigerant gas in the additional condenser 9 enters after being condensed in the condenser 2, the temperature is low and the amount of heat radiation is small. Additional condenser 9 with low-temperature refrigerant gas
In the low-temperature atmosphere and the condenser 2 in which the refrigerant gas has a high temperature, the temperature rises due to the heat radiation of the additional condenser 9, but heat exchange occurs with the atmosphere in which the refrigerant gas is lower than the refrigerant gas. In both cases, heat exchange can be performed sufficiently.

In the heating operation, the refrigerant gas discharged from the compressor 1 has its circuit switched by the four-way valve 10 and is sent to the evaporator 3 to radiate heat, heat the room and condense, and the additional condenser 9 After radiating heat as a condenser, it is sent to the condenser 2 to evaporate and absorb heat, and returns to the compressor 1. It seems that the amount of heat released by the additional condenser 9 reduces the amount of calorie in the room, but the calorie was not used originally, but rather became a condensation shortage and hindered evaporation, affecting the indoor heating capacity. Not only that, when the temperature is low outdoors in winter, the heat absorption capacity of the condenser 2 is reduced. In this case, since the hot air from the condenser 9 is sent, the heat absorption capacity is improved. Also, when the temperature is low outdoors, frost adheres to the condenser 2 serving as an evaporator, and since the hot air is sent to the condenser 2 from the additional condenser 9, the frost is reduced. For example, when the atmospheric temperature is plus 5 ° C., the temperature drops by 7 ° C. in the condenser 2 and is blown out at a minus temperature, but the air passing through the additional condenser 9 rises by 5 ° C. and rises by 1 ° C.
Since the temperature becomes 0 ° C. and passes through the condenser 2, even if it absorbs 7 ° C., the temperature is positive.

During the cooling operation, the state of the refrigerant gas flowing out of the capillary tube 4 of the condenser 2 is first observed from the surface temperature of the gas pipe 7. FIG. 6 is a graph. The ambient temperature is 35 ° C. The vertical axis indicates temperature (゜ C), and the horizontal axis indicates time (minutes). The surface temperature of the gas pipe 7, which is almost the same as the atmospheric temperature, starts dropping about 30 seconds after the operation of the compressor 1 and drops to about 20 ° C. for about 30 seconds. This is because a part of the refrigerant gas exiting the capillary tube 4 has been evaporated. After standing still for about 30 seconds, the temperature starts to rise and about 2 minutes later, the condenser 2
Is the same as the gas pipe surface temperature at the capillary tube 4 inlet. The refrigerant gas that has exited the capillary tube 4 starts to evaporate once in the gas pipe 7, but does not evaporate any more because the cross-sectional area of the gas pipe of the additional condenser 9 is small, and the liquid refrigerant in the additional condenser 9 is The additional condenser 9 which starts to condense at this point, since the heat exchange is good, the condensing proceeds, and the additional condenser 9 is filled with the liquefied refrigerant gas, and the capillary tube 4 is filled with the liquid refrigerant gas. Just pass through.

When this was observed from a liquid level gauge attached to both the inlet and outlet of the refrigerant gas of the additional condenser 9, it was found that the liquid and gas were mixed and blown out at the inlet from about 30 seconds after the operation of the compressor 1. However, the liquid refrigerant gas containing bubbles gradually becomes full, and at this point, the evaporation stops. Observation from the liquid level gauge attached to the outlet of the additional condenser 9 shows that the refrigerant gas almost free of bubbles is passing therethrough. During the passage from the refrigerant gas inlet to the outlet of the additional condenser 9, the temperature of the refrigerant gas is about 1
Although the temperature drops by 0 ° C., the atmospheric temperature passing through the additional condenser 9 becomes 10 ° C. near the refrigerant gas inlet and 0.2 ° C. near the outlet.
It can be seen that the temperature has increased by 5 ° C. on average, and that heat has been radiated at all points of the additional condenser 9 and that it is operating as a condenser. When the temperature of the outgoing air temperature exceeds the atmospheric temperature of the additional condenser 9 by 1 ° C. or more, the refrigerant gas is completely condensed. When the additional condenser 9 has a single gas circuit from the inlet to the outlet of the refrigerant gas to increase the flow distance of the refrigerant gas, the refrigerant gas condenses well without evaporating. In the heating operation, the refrigerant gas circuit is switched by the four-way valve 10, and the refrigerant gas is sent to the evaporator 3 and condensed, and then sent to the additional condenser 9 to reverse the flow.
The additional condenser 9 operates as a condenser. In the heating operation, since the additional condenser 9 is attached to the outdoor unit, the distance of the gas pipe connecting the evaporator 3 in the indoor unit and the additional condenser 9 becomes longer, but also in this case, the temperature of the gas pipe first drops, but immediately. To rise. Observation from a liquid level gauge at the refrigerant gas inlet of the additional condenser 9 shows that a liquefied gas mixed with bubbles is flowing. In a cooler exclusively used for cooling, a capillary tube is attached only to the refrigerant gas outlet of the condenser 2 in the outdoor unit, and the gas pipe leading to the evaporator flows the evaporative gas. The refrigerant gas evaporates even if a gas pipe condenser having a diameter almost the same as that of the evaporator 3 is installed between the evaporators 3. In general, it is natural that the refrigerant gas that has exited the capillary tube evaporates in the next heat exchanger. However, the present invention reduces the cross-sectional area of the gas circuit of the additional condenser 9 and the refrigerant gas. The additional condenser 9 always operates as a condenser because the distance of the circuit through which the air flows is long.

Normal condenser 2, additional condenser 9
In the cooling operation, the condenser 2 is usually a condenser and the additional condenser 9 is also a condenser in the cooling operation. In the heating operation, the condenser 2 is usually an evaporator and the additional condenser 9 is a condenser, as in the air-cooled type. A water tank or a cooling tower 15 is installed, and in cooling operation, water sent by a water pipe 19 by a water pump 16 is heated by condensing refrigerant gas in an additional condenser 9 and heating the water.
Normally, heat is exchanged with the refrigerant gas in the condenser 2 to further raise the temperature, and then returns to the cooling tower to be cooled. If the diameter of the water circuit of the additional condenser 9 is small, the flow rate of water decreases, so the water circuit is divided into the additional condenser 9 and the existing condenser 2. In the heating operation, the water sent from the water tank 15 by the water pump 16 by the water pipe 19 exchanges heat with the refrigerant gas in the additional condenser 9 and the water temperature rises.
Usually, the water temperature is cooled by heat exchange with the evaporated gas in the condenser 2. If groundwater, sewage water, or waste heat water is used for the water tank 15, the temperature is higher than the atmospheric temperature, so that the heat absorption during the heating operation in winter is improved and the heating efficiency is improved.

The existing condenser 2 is water-cooled, a water tank 15 is installed, and the water tank 15 and the condenser 2 are reciprocated by a water pipe 19 through a water pump 16.
In the cooling operation, the water in the water tank 15 is circulated through the condenser 2 to condense the refrigerant gas and sequentially increase the temperature of the water in the water tank. In a normal heat pump type air conditioner, the refrigerant gas does not condense when the water temperature exceeds 40 ° C. However, since the additional condenser 9 condenses, even if the water temperature rises, the refrigerant gas can be operated without being saturated. Becomes When HFC134a is used as the refrigerant gas, hot water at 80 ° C. can be taken out, so that it is used for hot water supply. In addition, we store heat with warm water using night electricity,
In the daytime, hot water is circulated to the fan coil 18 by the water pump 17 to radiate heat and heat the daytime.

The existing condenser 2 is of a water-cooled type, a water tank 15 is installed, and the water tank 15 and the condenser 2 are reciprocated by a water pipe 19 via a water pump 16.
The water in the water tank 15 is circulated through the condenser 2, the refrigerant gas is condensed by the evaporator 3 and the additional condenser 9, and the refrigerant gas is evaporated by the condenser 2. The water in the water tank descends over time. It can be cooled down to 0 ° C with fresh water and used for cooling.
If HFC125 is used as the refrigerant gas and antifreeze is used, the water temperature in the water tank 15 can be cooled down to minus 35 ° C. Since the water freezes, cold energy is stored by ice with nighttime electric power, and the cold water is sent to the fan coil 18 in the daytime for cooling. Instead of sending hot water to the fan coil, the gas in the pipe is heated with hot water and sent to the indoor unit for heating operation. Also, instead of sending the cold water to the fan coil, the gas in the pipe is cooled by the cold water and sent to the indoor unit to perform the cooling operation.

Even if the water tank 15 and the condenser 2 are not separated, the condenser 2 or a gas pipe in place of the condenser 2 is installed in the
Even if the water inside is circulated by the water pump 16, hot water and cold water can be similarly produced. If the evaporation temperature is changed by changing the flow rate of the refrigerant gas by using an expansion valve instead of the capillary tube, the efficiency of the heat pump improves in taking out hot water and cold water and operating the freezer. A one-way refrigerant gas valve is attached to the refrigerant gas inlet of the condenser and the inlet of the evaporator together with the expansion valve. By installing water tanks on both the condenser 2 side and the evaporator 3 side, cold water and hot water can be taken out at the same time.

An additional air-cooled condenser 9 is installed on the air suction side of the ordinary air-cooled condenser 2 so that the air passes through the additional air-cooled condenser 9 and then passes through the ordinary air-cooled condenser, so that the compressor is The refrigerant gas discharged from 1 is condensed by the condenser 2 and then sent to the additional condenser 9 to be condensed again, thereby improving the cooling efficiency and saturating the refrigerant gas even in summer, even when the atmospheric temperature is high. Prevention is not limited to the operation of air conditioners, but is also necessary for the operation of refrigerators and refrigerators. The defrosting operation of the refrigerator is the same as that of the heat pump type air conditioner / heater.
Operates as a condenser. The fact that the additional condenser 9 promotes the condensation of the refrigerant gas means that HF
It is particularly useful when using a C-based refrigerant gas.

[0033]

【Example】

[Example 1] The heat pump type air conditioner used was a compressor: 2.25 kW (three-phase 200V) 3H
P, air-cooled condenser, air-cooled evaporator: 7.500
kcal / h. In the cooling operation, the refrigerant gas discharged from the compressor is condensed by the condenser in the outdoor unit, sent to the capillary tube of the evaporator in the indoor unit by the gas pipe, decompressed, evaporated by the evaporator, absorbed heat, and then absorbed by the gas pipe. Return to the compressor. In the heating operation, the refrigerant gas discharged from the compressor is switched in a gas circuit by a four-way valve, enters the evaporator in the indoor unit, the evaporator radiates heat as a condenser, heats and condenses, and a gas pipe is formed. Accordingly, the refrigerant is sent to the capillary tube of the condenser in the outdoor unit to reduce the pressure, and the condenser becomes an evaporator, and the refrigerant gas evaporates and returns to the compressor.

The gas circuit from the condenser in the outdoor unit to the evaporator in the indoor unit is connected to the gas circuit of the present invention.
One condenser of 000 kcal / h is additionally installed, and the refrigerant gas which normally exits the condenser 2 is supplied to the additional condenser 9
Through to the evaporator. Additional condenser 9
Was installed so as to be stuck to the air suction side of the existing condenser 2 of the outdoor unit, that is, to the outside, and the air passed through the additional condenser 9 and then passed through the existing condenser 2. The refrigerant gas is HCFC (hydro
Chlorofluorocarbon) 22.

When the cooling operation is performed in this manner, the refrigerant gas exiting the compressor is condensed in the existing condenser 2 and
After entering the additional condenser 9, it is further condensed and decompressed by the capillary tube 5 of the evaporator 3 in the indoor unit.
After evaporating to cool the room, return to the compressor. In the heating operation, the refrigerant gas discharged from the compressor is switched in circuit by the four-way valve 10 and enters the evaporator 3 in the indoor unit, and the evaporator 3 functions as a condenser and radiates heat to heat the room. After being condensed, it enters the additional condenser 9 and is further condensed, decompressed by the capillary tube 4 of the condenser 2 in the outdoor unit, evaporated by the condenser 2 and returned to the compressor. The additional condenser 9 operates as a condenser and dissipates heat.

The data obtained by measuring the operating state of the heat pump type air conditioner equipped with the additional condenser as described above are shown below. (The temperature is ΔC and the pressure is kg / cm ^2. ) The refrigerant gas uses HCFC22. [Cooling operation] 1 Atmospheric temperature 33.6 3 Compressor head temperature 62.5 3 Compressor discharge Gas temperature 75.3 4 Gas temperature in the existing condenser 73.1 5 Gas temperature out of the existing condenser 48.6 6 Gas temperature in the additional condenser 48.5 7 Gas temperature out of the additional condenser 37.7 8 Gas temperature out of the evaporator ………………………… …………………………………………………………………………………………………………………………………… 9 9 9 9 9 9 9 9 9 9 9 9 9 9 Outgoing atmospheric temperature 38.5 12 Atmospheric temperature in existing condenser 2 36.4 13 Atmospheric temperature at the existing condenser ... 45.2 14 Atmospheric temperature at the evaporator ... 23.5 15 At the evaporator 12.5 16 Gas pressure coming out of the compressor ... 16.5 17 Gas pressure coming into the compressor ... 4.1 18 R-phase current value (A) ............ 11.7 19 S-phase current value (A) ........................... 12.8 20 T-phase current value (A) ... 12.5 Higher S-phase and T-phase values are connected to the power supply of the indoor unit motor. I have. The temperature of the air coming out of the additional condenser is the average temperature of the upper, middle and lower three points. The temperature of the air entering the existing condenser is the average temperature including the part without the additional condenser.

[Heating operation] 1 Atmospheric temperature …………………………… 6.2 2 Compressor head temperature …………………… 58. 7 3 Compressor discharge gas temperature 67.2 4 Indoor unit Gas temperature in evaporator 6 3 5 Indoor unit gas temperature out of evaporator 6 ………… 31 ・ 5 6 Outdoor unit Gas temperature into the additional condenser …… 31.5 7 Outdoor unit Gas temperature from the additional condenser ……………………………………………………………………………… 11. Temperature 2.1 9 Gas temperature in compressor ... 2.3 10 Atmospheric temperature in additional condenser ... 6.2 11 Additional condenser Outgoing ambient temperature 13.6 12 Atmospheric temperature in existing condenser 2 ……………………………………………………………… 13. Atmospheric temperature from evaporator ... 33.2 16 Gas pressure from compressor ... 14.5 17 Gas pressure into compressor ............... 3.1 18 R-phase current value (A) ... 11.9 19 S-phase current value (A) ........................... ... 13.1 20 T-phase current value (A) ............... 12.9

As shown in the above data, both the cooling operation and the heating operation are in a sufficiently satisfactory operation state. In cooling operation, the gas temperature at 48.5 ° C is 3 with an additional condenser.
The gas temperature of 7.7 ° C and 10.8 ° C has dropped, and the gas temperature of 31.5 ° C has changed to 11.1 ° C and 20.4 ° C in the heating operation.
It is descending. In the cooling operation, more heat is dissipated than before until the gas temperature is lowered by the additional condenser, and heat absorption and cooling calories increase accordingly. Since the condensation is sufficient, the operating pressure is low, and the refrigerant gas does not saturate. In the heating operation, the average temperature of the 7.4 ° C. atmospheric temperature rises at the place where the additional condenser is installed, and the heat absorption of the existing condenser is improved accordingly. The average temperature of the air in the existing condenser, including the places without additional condensers, increased by an average of 5.1 ° C to 11.3 ° C, and the blowing temperature was 4.5 ° C, with frost attached. It is difficult to do.

Embodiment 2 As Embodiment 2, HCFC
A description will be given of a modified heat pump type air conditioner operated using (hydro-chloro-fluoro-carbon) 22 as a refrigerant gas. Compressor capacity,
At 5.5 Kw (three-phase 200 V, 7.5 HP), the heat exchange capacity of the condenser of the outdoor unit and the evaporator of the indoor unit is 18,750 Kcal / h, respectively. In the case of cooling operation, the refrigerant gas discharged from the compressor is condensed by the condenser in the outdoor unit, sent to the capillary tube of the evaporator in the indoor unit by the gas pipe, decompressed and evaporated by the evaporator to the compressor. Return. In the case of the heating operation, the refrigerant gas discharged from the compressor has its circuit switched by a four-way valve,
The evaporator enters the evaporator in the indoor unit, and the evaporator serves as a condenser to condense the refrigerant gas. The pressure of the refrigerant gas is reduced by a gas pipe through a capillary tube of the condenser in the outdoor unit, and the evaporator evaporates in the condenser and returns to the compressor.

The refrigerant gas HCFC22 is extracted, two condensers having a heat exchange capacity of 5,000 Kcal / h are sequentially connected to a gas circuit extending from the condenser in the outdoor unit to the evaporator in the indoor unit, and then to the evaporator in the indoor unit. It is connected to every gas pipe. Normally, refrigerant gas condensed in the condenser passes through two additional condensers,
It is further condensed. Two additional condensers,
The outdoor unit is installed so that it is attached to the air suction side of the existing condenser, that is, the outside, and the air is sucked in by a blower fan. The air passes through the additional condenser and then passes through the existing condenser. The heat exchange capacity of the two additional condensers is 10,000 Kcal /
h is about 53% of the heat exchange capacity of the existing condenser. As the refrigerant gas, a new alternative refrigerant gas HFC (hydro-fluorocarbon) 134a was introduced.

When the cooling operation is performed in this manner, the refrigerant gas that has exited the compressor is condensed by the existing condenser, passes through two additional condensers sequentially, and is further condensed, and the capillary of the evaporator in the indoor unit is condensed. The pressure in the tube is reduced, the evaporator evaporates and cools the room, and then returns to the compressor.
In the case of the heating operation, the refrigerant gas discharged from the compressor is switched in the circuit by the four-way valve, enters the evaporator in the indoor unit, the evaporator becomes a condenser, and after radiating heat and condensing,
The heat is further radiated through the two additional condensers in sequence, and after the heat is completely condensed, the pressure is reduced by the capillary tube of the condenser in the outdoor unit, and the condenser evaporates, absorbs heat and returns to the compressor. As described above, the additional condenser operates as a condenser in both the cooling operation and the heating operation.

The following shows data obtained by measuring the operating state of a heat pump type air conditioner after remodeling using the above-mentioned new alternative refrigerant gas HFC134a. (Temperature is ゜ C, pressure is Kg /
cm ² and is) [cooling operation] 1 atmospheric temperature ......................................................... 30.7 2 compressor head temperature ................................. 46.3 3 Compressor discharge gas temperature 69.3 4 Gas temperature in the existing condenser 67.7 5 Gas temperature out of the existing condenser 67.7 5 ………………………………………………………………………………………………………………………………………………………………………………………………… 41.4 7 Temperature of gas in vessel capillary tube 33.4 9 Temperature of gas in evaporator 10.3 10 Gas temperature of vapor out of evaporator ............ …………… 7.9 11 Gas temperature in compressor ……………………………………………………………… 30.3 13 Atmosphere temperature at the existing condenser ... Atmospheric temperature at the existing condenser ... 30.3 13 Atmospheric temperature at the additional condenser ... 34.2 15 Atmospheric temperature from the existing condenser ... 46.3 16 Atmospheric temperature in the evaporator ... 20.6 17 Evaporator Outgoing atmospheric temperature ………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………. 8.5 20 Gas pressure on the evaporator side ........................... 1.6 21 R-phase current value (A) ........................... …………………………………………………………… 14.6 22 S-phase current value (A) ………………………………… 13.1 23 T-phase current value (A) … ………………… 14.5

[Heating operation] 1 Atmospheric temperature …………………………………………………………………………………………………………………………………………………………………… 9 .2 3 Compressor discharge gas temperature 62.8 4 Indoor unit Gas temperature entering the evaporator 62.8 5 Indoor unit Gas temperature exiting the evaporator …………… 36.2 6 Gas temperature in additional condenser attached to outdoor unit ……………………… 36.0 7 Outdoor Gas temperature of the additional condenser attached to the unit ……………………………… 27.6 8 Outdoor unit Gas temperature of the existing condenser capillary tube …………… …………… 27.6 9 Outdoor unit Gas temperature in condenser (measurement is impossible due to the shape of the equipment) 10 Outdoor unit Gas temperature at the outlet of the denser ... 11.5 11 Gas temperature at the compressor ... 10.5 12 Indoor unit Atmospheric temperature at the evaporator ... … 16.8 13 Indoor unit Atmospheric temperature from evaporator 38.1 14 Outdoor unit Atmospheric temperature with additional condenser 9.2.15 Outdoor unit Additional condenser Atmospheric temperature of 15.3 16 Outdoor unit Atmospheric temperature at existing condenser ............ 15.3 17 Outdoor unit Atmospheric temperature at existing condenser 6.7 18.18 Indoor central temperature ... ……………………………… 15.2 19 Condenser side gas pressure …………… 9.8 20 Evaporator side gas pressure …………………………………………… …………………………………………… 5.8 21 R-phase current value (A) …………………………. 13.6 22 S-phase current value (A) ... 12.0 23 T-phase current value (A) ... ............ 13.0

As shown in the above data, both the cooling operation and the heating operation are in a sufficiently satisfactory operation state. In the case of cooling operation, the gas temperature of 41.4 ° C
The temperature dropped to 3.5 ° C and 7.9 ° C, and the atmospheric temperature of the additional condenser, 30.3 ° C, increased to 34.2 ° C and 3.9 ° C. Has become. In the heating operation, the gas temperature at 36.0 ° C. in the additional condenser drops to 27.6 ° C. and 8.4 ° C., and the atmospheric temperature in the additional condenser becomes 9.2 ° C. to 15.3 ° C. and 6 ° C. .1 ° C., the heat radiation is sufficient, and the condensation is good. In this way, the additional condenser attached to the outdoor unit operates as a condenser in both cooling operation and heating operation, condensing the refrigerant gas well, completely liquefying it, and improving compatibility with mineral oil-based lubricating oil. The operation of the heat pump using the substitute refrigerant gas 134a becomes possible.

[0045]

As described above, the additional condenser is attached to the heat pump type air conditioner, and the additional condenser operates as a condenser during the cooling operation or the heating operation. The amount of heat released and the amount of heat absorbed by the evaporator are increased, and the cooling efficiency is improved. In addition, in summer, when the atmospheric temperature is high, the amount of heat exchange in the condenser is insufficient and high-pressure operation is performed.Therefore, power consumption does not increase, and refrigerant gas is insufficiently condensed and saturated, and operation stops. No dripping or gas leaks. In the case of the heating operation, the heat radiated by the additional condenser is absorbed by warm air by the condenser which becomes the evaporator, so that the amount of absorbed heat is increased and the heating efficiency is improved. Further, since the hot air is sent to the evaporator, the temperature of the atmosphere passing through the evaporator increases, so that even when the outside air temperature is low, frost does not adhere and the power consumption required for removing frost is reduced. As much as the refrigerant gas passes through the additional condenser,
Although the resistance value seems to increase, when the condensation of the refrigerant gas is improved, the refrigerant gas and the oil are well compatible with each other and the resistance is reduced, especially when the refrigerant gas is condensed until there is no bubble,
Even if the resistance at the expansion valve is reduced and the efficiency of the heat pump type air conditioner is improved, the power consumption is not increased.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a state in which an additional condenser 9 is installed on the air suction side of the existing condenser 2;

FIG. 3 is a single-sided drawing of a gas pipe in which the inside of a gas pipe case is divided into a plurality of sections and a cross-sectional area of a gas circuit is reduced.

FIG. 4 is a schematic diagram showing a state in which the condenser 2 and the additional condenser 9 are water-cooled and connected to a water tank or a cooling tower by the condenser 2 and the additional condenser 9 and a water pipe 19 via a water pump 15;

FIG. 5 shows a water-cooled condenser 2 connected to a water tank 15 with a water pipe 19 via a water pump 16, storing cold and hot water in the water tank and releasing heat with a fan coil 18 for cooling and cooling.
It is the schematic which shows the structure which performs heating.

FIG. 6: Get out of the capillary tube of the condenser 2,
FIG. 3 is a diagram showing a gas pipe surface temperature when a refrigerant gas passes through a gas pipe 7.

[Explanation of symbols]

1 ‥‥‥ Compressor 2 ‥‥‥ Condenser 3 ‥‥‥ Evaporator 4 ‥‥‥ Condenser side capillary tube 5 ‥‥‥ Evaporator side capillary tube 6 ‥‥‥ Gas pipe connecting compressor 1 and condenser 2 7 ‥‥‥ Condenser 7 '{a gas pipe connecting the additional condenser 9 and the capillary tube 5 of the evaporator 3; 8 a gas pipe connecting the evaporator 3 and the compressor 1; {Condenser added between condenser 2 and evaporator 3} 10} Four-way valve for switching the flow direction of refrigerant gas 11} Arrow indicating the direction of atmosphere 12} Normal condenser blower fan 13} Gas pipe case 14 Circuit in gas pipe case 15 Water tank 16 Water Pump 17 Water pump for fan coil 18 Fan coil 19 Water pipe

Claims (10)

[Claims] 1. A heat pump type air conditioner comprising a compressor 1, a condenser 2 and an evaporator 3, wherein the compressor 1 and the condenser 2 are connected by a gas pipe 6 through a four-way valve 10 and are provided at a refrigerant gas outlet of the condenser 2. 4 and the additional condenser 9 are connected by a gas pipe 7, and the additional condenser 9 and the evaporator 3 are connected.
Of the evaporator 3 and the compressor 1 is connected to a four-way valve 10
A heat pump type air conditioner, which can be switched between a cooling operation and a heating operation by connecting with a gas pipe 8 via 2. In a heat pump type air conditioner comprising a compressor 1, a condenser 2 and an evaporator 3, refrigerant gas is discharged from the compressor 1 to the gas pipe 6 side and sent to the condenser 2, and the condenser 2 exchanges heat with the atmosphere or cooling water. The gas is then condensed and sent to the additional condenser 9 through the gas pipe 7, where it is radiated again to be further condensed, depressurized by the capillary tube 5 installed in the evaporator 3 through the gas pipe 7 ′, and sent to the evaporator 3. After evaporating, the refrigerant gas is returned to the compressor 1 by the gas pipe 8, the refrigerant gas is discharged from the compressor 1 to the gas pipe 8, the evaporator 3 is operated as a condenser to condense the refrigerant gas, and the gas pipe 7 ′ To the additional condenser 9 through which heat is dissipated again to further condense,
The refrigerant gas is sent to the capillary tube 4 installed in the condenser 2 by the gas pipe 7 and depressurized there, sent to the condenser 2, and the condenser 2 is operated as an evaporator to evaporate the refrigerant gas. A heat pump type heating and cooling system in which the four-way valve 10 can switch the heating operation to return to the heating operation, and in any of the cooling operation and the heating operation, the additional condenser 9 releases heat of the refrigerant gas to promote condensation. Machine. 3. The heat pump type air conditioner according to claim 1, wherein the heat exchange capacity of the additional condenser 9 is 20% or more of the heat exchange capacity of the existing condenser 2. 4. The internal diameter of the pipe of the gas pipe circuit in the additional condenser 9 is reduced to 80% or less of the internal diameter of the pipe of the gas pipe circuit in the existing condenser 2, or the cross-sectional area is 64%.
The heat pump type cooling / heating machine according to any one of claims 1, 2 and 3, wherein: 5. The heat pump air conditioner according to claim 1, wherein a plurality of gas circuits in the additional condenser 9 are provided by extruding the refrigerant gas circuit 14 into the gas pipe case 13. 6. In the air-cooled heat pump, an additional condenser 9 is attached to the air suction side of the existing condenser 2 so that the air passes through the extra condenser 9 and then passes through the existing condenser 2. The heat pump type cooling / heating machine according to any one of claims 1 to 5, wherein the additional condenser (9) radiates heat so that the temperature of the heated air enters the existing condenser (2). 7. The existing condenser 2 and the additional condenser 9 are both water-cooled condensers. When refrigerant gas is condensed on the water-cooled condenser side, the cooling water passes through the additional condenser 9 and exchanges heat with the refrigerant gas. The heat pump type cooling / heating machine according to any one of claims 1 to 5, wherein heat is exchanged with the refrigerant gas through the existing condenser 2. 8. An existing condenser 2 is water-cooled, a water tank is installed, and a water pipe through a water pump 16 connects the water tank and the water-cooled condenser 2 in a reciprocating manner so that water in the water tank is cooled. Circulates through the condenser 2 and radiates and condenses the refrigerant gas with the water-cooled condenser 2 and sequentially raises the water temperature in the water tank, and then sends it to the fan coil to radiate heat and use the heated water or hot water for hot water supply In addition, the refrigerant gas is evaporated by the water-cooled condenser 2 to absorb heat, the water temperature in the water tank is sequentially reduced, cold heat is stored in cold water or ice, and then sent to a fan coil to dissipate the cold heat to cool the air. Or to use cold water, claims 1-5,
The heat pump type cooling / heating machine according to any one of the above. 9. The existing condenser 2 is an integrated water-cooled condenser installed in a water tank, the water in the water tank is circulated by a water pump, and the refrigerant gas is radiated and condensed by the water-cooled condenser 2. Then, after the water temperature in the water tank is sequentially increased, the water is sent to a fan coil to radiate heat for heating or use hot water for hot water supply, and the water-cooled condenser 2 evaporates refrigerant gas to absorb heat, and absorbs heat. The water temperature in the inside is sequentially lowered, and after storing cold heat with cold water or ice, it is sent to a fan coil to radiate the cold heat for cooling, or cold water is used. Heat pump air conditioner. 10. An air suction side of the condenser 2,
The additional condenser 9 is installed so as to be bonded, the air passes through the additional condenser 9, and then passes through the condenser 2. The refrigerant gas exchanges heat with the atmosphere in the condenser 2, and then passes through the additional condenser 9 with the atmosphere. A heat pump type cooling / heating machine according to any one of claims 1 to 5, which is a refrigeration / refrigeration machine adapted to exchange heat.