KR101159147B1 - Heating and cooling apparatus - Google Patents

Abstract

PURPOSE: An environmentally-friendly cooling and heating apparatus is provided to reduce electricity consumption by bypassing outdoor air using a brine even in a state where temperature differences between indoor and outdoor are small in case of cooling in the winter season, and to accomplish an environmentally-friendly energy saving system by using waste heat source or solar energy. CONSTITUTION: An environmentally-friendly cooling and heating apparatus comprises an indoor heat exchanger, a first circulating passage, a second circulating passage, a compressor, a first outdoor heat exchanger(150), and a second outdoor heat exchanger(160). The indoor heat exchanger comprises an outlet for supplying cool air or warm air to a space for harvesting or storing crops and a coil brine. The first circulating passage supplies refrigerant supplied from one side of the coil brine and comprises a first valve. The second circulating passage supplies the refrigerant supplied from an evaporator to the other side of the coil brine and comprises a second valve. The compressor is arranged on the evaporator to compress the refrigerant. The first outdoor heat exchanger variably reduces the operation of the compressor in case that the temperature of outdoor air is lower than indoor air in cooling. The second outdoor heat exchanger heats the refrigerant receiving from the first circulating passage with heat source receiving from the outside in heating and supplies to the second circulating passage.

Description

Eco-friendly heating and heating device {Heating and cooling apparatus}

The present invention relates to an environment-friendly air conditioning system, and to an environment-friendly air conditioning system capable of constructing an environment-friendly air conditioning system by introducing outdoor air in winter.

The chiller refrigeration system is a device in which the refrigerant flow path and the brine flow path overlap each other in the evaporator, and a solution having a low freezing point is used inside the brine, and an aqueous solution of an ethylene glycol mixture is generally used (inorganic brine: CaCl₂, MgCl₂, NaCl). : Severe corrosion, organic subline: ethylene glycol, propylene glycol, ethyl alcohol).

Looking at the brine cycle of the chiller refrigerating device, the brine from the heat exchanger is subjected to heat exchange with the refrigerant in the evaporator, the temperature compensation is heated by the brine heater in the tank, and the path to the heat exchanger by the brine pump is repeated. To do it.

According to such a conventional structure, there is a problem that unnecessary power use of the compressor is caused during cooling in winter, and contaminated air may be introduced when inflowing outside air at low temperature.

In addition, there is a limit that can be used when the indoor air and the outside air temperature is about 5 ℃ or more when performing the temperature correction by introducing the outside air.

In addition, there is a limit in using cooling and heating at the same time, there is a problem in establishing an energy saving system in an environmentally friendly manner.

The present invention is to solve such a problem, to cool the brine by using the outside air during the winter cooling to prevent power waste, eco-friendly air-conditioning system that can build an eco-friendly energy saving system by utilizing waste heat or solar heat during heating The purpose is to provide.

The present invention for performing the above object is an indoor heat exchanger having a discharge port is formed so as to supply cold or warm air to the space for growing or storing the crops, the refrigerant flows therein; A first circulation passage for supplying a refrigerant supplied from one side of the coil brine to an evaporator and having a first valve; A second circulation passage for supplying the refrigerant supplied from the evaporator to the other side of the coil brine and having a second valve; A compressor provided on the evaporator to compress the refrigerant; When cooling, the first outdoor heat exchanger that is arranged outdoors to reduce the operation of the compressor when the outside air temperature is lower than the indoor air, and cools the refrigerant flowing on the first circulating flow path and when the outside, It provides an environmentally friendly heating and cooling system comprising a second outdoor heat exchanger for receiving a heat source from the first circulation oil to heat the refrigerant supplied from the first circulation flow path.

The first outdoor heat exchanger cools the first branch flow path selectively receiving refrigerant from the first circulation flow path, a counterflow heat dissipation unit for cooling the refrigerant received through the first branch flow path, and the counterflow heat dissipation unit. It may include a second branch flow path for discharging the refrigerant to the second circulation flow path.

The eco-friendly air conditioning and heating system is provided on the first branch flow path and a third valve for selectively shielding the refrigerant flowing into the first branch flow path from the first circulation flow path, and provided on the second branch flow path It may further include a fourth valve for selectively shielding the refrigerant flowing into the first circulation passage from the second branch passage.

The third valve may be provided with a three-way valve at a portion where the first circulation passage and the first branch passage meet.

The eco-friendly air-conditioning system is a portion where the first circulation passage, the first branch flow path and the second branch flow path meet so that when the first outdoor heat exchanger is operated, a refrigerant may be supplied to the evaporator via the first outdoor heat exchanger. It may further include a seventh valve for opening and closing the flow path between.

The second outdoor heat exchanger includes a third branch flow path receiving the refrigerant from the first circulation channel, a heating unit for heating the refrigerant received through the third branch flow path, and a refrigerant heated from the heating unit. It may include a fourth branch flow path which is supplied to the circulation flow path.

The heating unit may include a solar heating unit including a collector and a heat storage tank to heat the refrigerant using solar heat.

The environment-friendly air conditioning and heating system is provided on the third branch flow path to selectively shield the refrigerant flowing into the third branch flow path from the first circulation flow path and the fourth branch flow path is provided on the fourth branch flow path A sixth valve may be further included to selectively shield the refrigerant flowing into the second circulation passage from the fourth branch passage.

The eco-friendly air conditioning system controls opening and closing of the first to seventh valves to selectively shield refrigerant supplied and discharged into the first circulation passage and the second circulation passage and the first branch passage through the fourth branch passage. The control unit may further include.

In cooling, when the indoor temperature is lower than the outdoor temperature, the controller variably reduces or stops the operation of the compressor, opens the first valve, the second valve and the seventh valve, and opens the third to third valves. When the six-valve is controlled to be blocked, and the indoor temperature is higher than the outdoor temperature, the first to fourth valves may be opened, and the fifth to seventh valves may be blocked.

During heating, the control unit may control to open the fifth valve and the sixth valve and shield at least the first valve and the second valve to operate the second outdoor heat exchanger.

The eco-friendly heating and cooling system may further include a circulation pump provided on the first circulation passage or the second circulation passage and providing a pressure to circulate the refrigerant on the first circulation passage and the second circulation passage.

According to the eco-friendly heating and cooling system according to the present invention,

First, when brine is used for cooling in winter, the amount of power can be reduced by bypassing the outside air even when the temperature difference between indoor and outdoor is small.

Secondly, since it does not directly introduce outside air, it can continuously supply pleasant air,

Third, since it uses waste heat source or solar heat when heating, there is an effect to build an environment-friendly energy saving system.

1 is a schematic perspective view of an eco-friendly heating and cooling system according to an embodiment of the present invention.
FIG. 2 is a reference diagram illustrating a configuration of an environment-friendly air conditioning and heating system shown in FIG. 1.
Figure 3 is a reference diagram showing the configuration of an environmentally friendly heating and cooling system according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the ordinary or dictionary meanings, and the inventors properly define the concept of terms in order to explain their invention in the best way. Based on the principle that it can be, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

1 is a schematic perspective view of an eco-friendly heating and cooling system 100 according to an embodiment of the present invention, Figure 2 is a reference diagram showing the configuration of the eco-friendly heating and cooling system 100 shown in FIG.

1 and 2, the eco-friendly heating and cooling system 100 according to the present invention is an indoor heat exchanger provided in a computer room that requires year-round air-conditioning, an indoor space that requires constant temperature and humidity, and a space for growing crops or a space for storing crops ( And a first circulation passage 120 and a second circulation passage 130 connected to both sides of the coil brine 112 provided inside the indoor heat exchanger 110 to circulate a refrigerant. A compressor 141 connected to the evaporator 140 provided in the heat exchanger 110 to compress the refrigerant, and a first outdoor unit connected to the first circulation passage 120 to be disposed outdoors to cool the refrigerant using outside air. A heat exchanger 150 and a second outdoor heat exchanger 160 for heating the refrigerant during heating using solar or ?? heat.

A fan (Fan) is provided inside the indoor heat exchanger (110) for supplying cold or warm air at the time of cooling or heating, and a discharge port (111) for discharging air supplied from the fan is formed and flows into the fan. The coil brine 112 for cooling or heating the air to be provided is provided.

The first circulation passage 120 supplies the refrigerant supplied from one side of the coil brine 112 to the evaporator, and a first valve 10 is provided on the first circulation passage 120.

In addition, the second circulation passage 130 supplies the refrigerant supplied from the evaporator to the other side of the coil brine 112, and a second valve 20 is provided on the second circulation passage 130.

In this case, when the first valve 10 and the second valve 20 are opened, the refrigerant is supplied to the second circulation channel 130 through the evaporator and the compressor through the first circulation channel 120 and the coil. Cooling is made while supplied to the brine 112.

The first outdoor heat exchanger is further connected on the first circulation passage 120. In this case, the first outdoor heat exchanger is preferably connected between the first valve 10 and the evaporator on the first circulation passage 120.

The first outdoor heat exchanger is a heat dissipation unit (152) for cooling the refrigerant supplied from the first branch passage (151) and the refrigerant supplied from the first branch passage (151) through the outside air (152). And a second branch passage 153 for discharging the refrigerant cooled from the heat dissipation unit 152 back to the first circulation passage 120.

The first branch channel 151 is connected to the first circulation channel 120 at a position preceding the second branch channel 153 in the advancing direction of the refrigerant on the first circulation channel 120. Accordingly, when the refrigerant supplied through the first branch channel 151 is discharged back to the first circulation channel 120, interference with the refrigerant supplied through the first circulation channel 120 may be prevented from occurring. have.

The third valve 30 is provided on the first branch channel 151, and the fourth valve 40 is provided on the second branch channel 153.

The third valve 30 bypasses the refrigerant flowing into the first branch channel 151 from the first circulation channel 120, and opens and closes the shielding unit to selectively shield the first branch channel 151. The fourth valve 40 has a function of opening and closing the second branch passage 153 to selectively shield the refrigerant flowing back into the first circulation passage 120 from the second branch passage 153. To provide.

The heat dissipation unit 152 is provided with a fan at the top and cools the refrigerant introduced by the outside air, and is preferably formed in a counterflow type in consideration of the cooling efficiency. Of course, it can be changed to a cross-type type or a complex type using the counter-flow and cross-flow type at the same time.

In addition, a seventh valve 70 is provided on the first circulation passage 120 between a portion where the first branch passage 151 is connected and a portion where the second branch passage 153 is connected.

The seventh valve 70 has a function of selectively opening and closing the first circulation passage 120 according to the opening and closing state of the third valve 30 and the fourth valve 40.

When cooling the refrigerant using the heat dissipation unit 152, since the operation of the compressor is variably reduced and the heat of the refrigerant is absorbed from the outside air, unnecessary power loss can be prevented and the outside air is directly introduced. By circulating the indoor air without cooling, it is possible to provide eco-friendly and comfortable cooling effect.

The second outdoor heat exchanger 160 is preferably connected between the coil brine 112 and the first valve 10 on the first circulation passage 120.

The second outdoor heat exchanger 160 receives a waste heat source or solar heat from the third branch passage 161 that receives the refrigerant from the first circulation passage 120, and the refrigerant supplied from the third branch passage 161. And a fourth branch passage 164 for discharging the refrigerant heated from the heating unit 162 to the second circulation passage 130.

A fifth valve 50 is provided on the third branch channel 161, and a sixth valve 60 is provided on the fourth branch channel 164.

The fifth valve 50 has a function of opening and closing the third branch passage 161 to selectively shield the refrigerant flowing into the third branch passage 161 from the first circulation passage 120. The sixth valve 60 provides a function of opening and closing the fourth branch passage 164 to selectively shield the refrigerant discharged from the fourth branch passage 164 to the second circulation passage 130.

The heating unit 162 is described as an example of a heating system using solar heat as shown in Figure 1, of course, it is possible to build a heating system as a power generation system using other wind power, tidal, and the like.

The heating unit 162 includes a solar heating unit 163 as shown in FIG. 2, and the solar heating unit 163 includes basic equipment such as a collector and a heat storage tank.

When the refrigerant is heated using the solar heating unit 163, the first valve 10 and the second valve 20 are blocked to stop the operation of the evaporator 140 and the compressor 141. Since the temperature of the refrigerant is heated by solar heat, it can provide an environmentally friendly heating effect.

In this case, a circulation pump 121 is provided on the first circulation passage 120 or the second circulation passage 130 to provide pressure to the refrigerant flow circulating through the first circulation passage 120 and the second circulation passage 130. do.

In addition, the first valve 10 is provided in the eco-friendly air conditioning and heating system 100 to control the path of the refrigerant circulating in the first circulation passage 120 and the first branch passage 151 to the fourth branch passage 164. ) Is provided with a control unit 170 for controlling the opening and closing of the seventh valve (70).

3 is a reference diagram showing the configuration of an environment-friendly heating and cooling system 200 according to another embodiment of the present invention. The same reference numerals as the above-mentioned reference numerals represent the same components.

Referring to FIG. 3, both sides of the coil brine 112 are provided with the first circulation passage 120 and the second circulation passage 130 connecting the evaporator 140, and the first branch passage 151. ) And a third valve 30 'is provided at a portion where the first circulation passage 120 is connected, and a fifth portion at a portion where the third branch passage 161 and the first circulation passage 120 are connected. The valve 50 'is provided.

Accordingly, the first branch passage 151 is branched from the third valve 30 'on the first circulation passage 120 to connect the heat dissipation unit 152, and the second branch passage 153 is intermediate. The fourth valve 40 is connected to the first circulation passage 120 again from the heat dissipation unit 152.

In addition, the third branch passage 161 is branched from the fifth valve 50 'on the first circulation passage 120 to connect the heating unit 162, and the fourth branch passage 164 is an intermediate portion. The sixth valve 60 is provided to connect the second circulation passage 130 from the heating unit 162.

In this case, the third valve 30 'and the fifth valve 50' are provided as three-way valves and have a function of introducing refrigerant only in one direction opened from the first circulation passage 120.

In this case, the refrigerant branched on the first circulation passage 120 supplies the refrigerant only in the open direction of the third valve 30 'or the fifth valve 50', so that the refrigerant flows in the third direction at the same time. It is not necessary to provide a separate valve on the first circulation passage 120, and the control of each valve can be easily achieved and the effect of reducing the manufacturing cost can be expected.

Hereinafter, with reference to the drawings will be described in detail the effect of the eco-friendly heating and cooling system 100 according to the present invention.

1 and 2, the eco-friendly air conditioning system 100 according to the present invention includes the first outdoor heat exchanger and the second outdoor heat exchanger 160 separately from the indoor heat exchanger 110 and the winter crops. Provide eco-friendly heating and cooling in cultivation or storage space.

At this time, the eco-friendly heating and cooling system 100 may control the opening and closing of the first valve 10 to the seventh valve 70 through the control unit 170 to prevent more efficient, comfortable and unnecessary power consumption.

Eco-friendly cooling and heating system 100 according to the present invention by controlling the first valve 10 to the seventh valve 70 from the control unit 170 during the winter cooling and heating, self-cooling, air cooling and self-heating, solar heating Can be carried out.

Since the indoor heat exchanger 110 builds a system related to a basic air conditioner, the indoor heat exchanger 110 may receive air from the outside to perform cooling and heating.

First, in self-cooling, the controller 170 opens the first valve 10, the second valve 20, and the seventh valve 70 and opens the third valve 30 to the sixth valve 60. Shielding and cooling may be performed using the evaporator, the compressor, and the condenser provided in the indoor heat exchanger (110). In addition, during the self-heating, the self-heating can be performed by changing the mode of the cooling system.

Hereinafter, outdoor air cooling using the first outdoor heat exchanger 150 and control of solar heating using the second outdoor heat exchanger 160 will be described in detail.

First, when the outside air is cooled, the controller 170 opens the first valve 10 to the fourth valve 40 when the indoor temperature is higher than the outdoor temperature, and the fifth valve 50 to the seventh valve 70. Control to block).

Then, since the third valve 30 is opened and the seventh valve 70 is closed, the refrigerant discharged into the first circulation channel 120 through the coil brine 112 is the first branch channel 151. It is supplied to the heat dissipation unit 152 through the). At this time, the heat dissipation unit 152 cools the refrigerant by using outside air lower than room temperature, and the cooled refrigerant is re-introduced into the first circulation passage 120 through the second branch passage 153 and the evaporator ( 140 is discharged to the coil brine 112 through the second circulation passage 130.

In the above process, the compressor 141 may be controlled from the controller 170 so that the operation is stopped or the minimum operation is performed, thereby minimizing power consumption. And even if the indoor temperature and the outdoor temperature is only 1 ℃ difference there is an advantage that the cooling using the first outdoor heat exchanger 150 is possible.

In addition, during solar heating, the control unit 170 opens the fifth valve 50 and the sixth valve 60, and at least the first valve 10 and the second valve 20 or the first valve 10. ) To block the fourth valve 40 and the seventh valve 70.

Then, the fifth valve 50 and the sixth valve 60 are opened and the refrigerant discharged into the first circulation passage 120 through the coil brine 112 and the first valve 10 to the fourth valve. Since the valve 40 is closed, the valve 40 is supplied to the heating unit 162 through the third branch flow passage 161. At this time, the heating unit 162 heats the refrigerant by using solar power, and the heated refrigerant flows into the second circulation passage 130 through the fourth branch passage 164 and the second circulation passage ( Through the 130 is discharged to the coil brine 112.

Therefore, in this process, it is possible to heat the refrigerant through the solar power generation and to provide warm air to the cultivation or storage space of the crops, thereby enabling the environment-friendly heating.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100: eco-friendly air conditioning system 110: indoor heat exchanger
120: first circulation passage 130: second circulation passage
140: evaporator 141: compressor
150: first outdoor heat exchanger 160: second outdoor heat exchanger
170:

Claims (12)

An indoor heat exchanger having a discharge port formed to supply cold air or warm air to a space for cultivating or storing the crop, and having a coil brine in which a refrigerant flows;
A first circulation passage for supplying a refrigerant supplied from one side of the coil brine to an evaporator and having a first valve;
A second circulation passage for supplying the refrigerant supplied from the evaporator to the other side of the coil brine and having a second valve;
A compressor provided on the evaporator to compress the refrigerant;
During cooling, when the outdoor air is lower than the indoor air, the compressor is variably reduced in operation, and selectively from the first circulation channel to cool the refrigerant flowing on the first circulation channel. A first branch passage receiving the refrigerant, a counterflow heat dissipation unit for cooling the refrigerant received through the first branch passage, and a second branch discharging the refrigerant cooled from the counterflow heat dissipation unit to the second circulation passage; A first outdoor heat exchanger including a flow path and
A second outdoor heat exchanger that receives a heat source from the outside and heats the refrigerant supplied from the first circulation oil to supply the second circulation passage;
Eco-friendly heating and heating device comprising a. delete The method according to claim 1,
A third valve provided on the first branch channel and selectively shielding the refrigerant flowing into the first branch channel from the first circulation channel; Eco-friendly heating and cooling device further comprises a fourth valve for selectively shielding the refrigerant flowing into the first circulation passage. The method according to claim 3,
The third valve,
Eco-friendly heating and cooling device which is a three-way valve is provided in a portion where the first circulation flow path and the first branch flow path. The method according to claim 3,
When the first outdoor heat exchanger is operated,
Eco-friendly further comprises a seventh valve for opening and closing the flow path between the portion where the first circulation channel and the first branch flow path and the second branch flow path so that the refrigerant is supplied to the evaporator via the first outdoor heat exchanger Air conditioning unit. The method according to claim 3,
The second outdoor heat exchanger,
A third branch passage that receives the refrigerant from the first circulation passage, a heating unit that heats the refrigerant received through the third branch passage, and a second supply passage of the refrigerant heated from the heating unit to the second circulation passage. Eco-friendly air-conditioning and heating system, including the fourth quarter euro. The method of claim 6,
The heating unit,
Eco-friendly heating and cooling device comprising a solar heating unit including a heat collector and a heat storage tank to heat the refrigerant using solar heat. The method of claim 6,
A fifth valve provided on the third branch channel and selectively shielding the refrigerant flowing into the third branch channel from the first circulation channel, and provided on the fourth branch channel, Eco-friendly heating and cooling device further comprises a sixth valve for selectively shielding the refrigerant flowing into the second circulation passage. The method according to claim 8,
And a control unit for controlling opening and closing of the first to seventh valves to selectively shield the refrigerant supplied and discharged to the first circulation passage and the second circulation passage and the first to fourth branch passages. Eco-friendly air conditioning unit. The method according to claim 9,
When cooling, the control unit,
When the indoor temperature is lower than the outdoor temperature, the compressor is variably reduced or stopped, the first valve, the second valve, and the seventh valve are opened, and the third to sixth valves are blocked. ,
When the indoor temperature is higher than the outdoor temperature, the environment-friendly heating and cooling device for controlling to open the first valve to the fourth valve, and to block the fifth valve to the seventh valve. The method according to claim 9,
When heating, the control unit,
Eco-friendly heating and cooling device for controlling to open the fifth valve and the sixth valve for the operation of the second outdoor heat exchanger, and to shield at least the first valve and the second valve. The method according to claim 1,
And an circulation pump provided on the first circulation passage or the second circulation passage, the circulation pump providing pressure to circulate the refrigerant on the first circulation passage and the second circulation passage.

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