KR100991843B1 - Air Compressor Waste Heat Recovery Device - Google Patents

Abstract

The present invention relates to an air compressor waste heat recovery apparatus, which is connected to a first air compressor and the first air compressor, and is connected to a first compressed air pipe through which high-temperature primary compressed air is discharged, and connected to the first compressed air pipe. A second air compressor, connected to the second air compressor and connected to at least one of the secondary compressed air pipe from which the high temperature secondary compressed air is discharged, the primary compressed air pipe, and the secondary compressed air pipe. A plurality of valves installed in a regenerator of the air-conditioning unit, the primary compressed air pipe or the secondary compressed air pipe to switch the flow path of the primary compressed air or the secondary compressed air, and the plurality of valves It includes a controller. In this way, by utilizing the heat energy generated and disposed in the air compressor, it is possible to improve the energy efficiency by producing heating, cooling, hot water.

Description

Air compressor waste heat recovery device {APPARATUS FOR RECOVERING WASTE HEAT OF AIR COMPRESSOR}

The present invention relates to an air compressor waste heat recovery apparatus.

 In general, an air compressor for generating air pressure required for an apparatus is used at a manufacturing site. An air compressor compresses air above atmospheric pressure to produce compressed air. In addition, air compressors are classified into reciprocating type, screw type, and turbo type according to the compression method. There are various kinds of power used in this case, such as an electric motor, an engine, and a turbine, but mainly an electric motor is used.

As such, in the process of adiabatic compression by suctioning atmospheric pressure air at room temperature, the compressed air is generally raised to 150 ° C or higher. Therefore, the rear end of the air compressor is essentially operated by installing a cooler to cool the compressed air again.

Looking at this in detail, in order to cool the air at elevated temperature requires a coolant supplied from the outside. At this time, the cooling water used is forcibly circulated by the cooling water circulation pump, thereby cooling the compressed air having an elevated temperature. In addition, heat is also generated in a motor installed in the air compressor, and this heat is forced to the machine room by a cooling fan rotating together with the motor, so a separate air conditioner must be driven to maintain the temperature of the machine room at an appropriate level. .

Therefore, according to the conventional technology configured as described above, since the heat energy generated in the process of adiabatic compression in the air compressor and the heat energy generated in the motor mounted on the air compressor are discarded, energy is not consumed unnecessarily. In addition, there was a problem in that expensive energy was wasted.

The problem to be solved by the present invention is to provide an air compressor waste heat recovery apparatus that can improve the energy efficiency by producing heating, cooling, hot water by utilizing the heat energy generated and disposed in the air compressor.

The apparatus for recovering waste heat of an air compressor according to an embodiment of the present invention may include a first air compressor and a first compressed air pipe connected to the first air compressor and discharging high temperature primary compressed air, and the first compressed air pipe. A second air compressor connected to the second air compressor, and a second compressed air pipe connected to the second air compressor and discharging high temperature secondary compressed air, and connected to at least one of the primary compressed air pipe and the secondary compressed air pipe. A plurality of valves installed in a regenerator of the cooling / heating apparatus, the primary compressed air pipe or the secondary compressed air pipe, for switching the flow path of the primary compressed air or the secondary compressed air, and the plurality of valves. It includes a controller to control.

The regenerator may include a first regenerator installed in the primary compressed air pipe and heat exchanged with the primary compressed air, and a second regenerator installed in the secondary compressed air pipe and heat exchanged with the secondary compressed air. The first compressed air pipe may be connected to a first bypass line for bypassing the first compressed air to the second air compressor without passing through the first regenerator, and to the secondary compressed air pipe. A second bypass line may be connected to bypass secondary compressed air not to pass through the second regenerator.

Each of the first bypass line and the second bypass line may be provided with a plurality of valves controlled according to a signal of the controller.

And a hot water heat exchanger installed in a bypass line connected to at least one of the primary compressed air pipe and the secondary compressed air pipe to exchange heat with at least one of the primary compressed air and the secondary compressed air. Can be.

The hot water heat exchanger may be installed in at least one of the primary compressed air pipe and the secondary compressed air pipe disposed behind the regenerator based on the movement path of the primary compressed air.

The hot water heat exchanger may include a first heat exchanger installed in a third bypass line connected to the primary compressed air pipe and a second heat exchanger installed in a fourth bypass line connected to the secondary compressed air pipe. It may include.

A water supply pipe is connected to the first heat exchanger, a hot water discharge pipe is connected to the second heat exchanger, and the first heat exchanger and the second heat exchanger may be connected to each other by a connection pipe.

The hot water discharge pipe may be installed with a hot water temperature sensor for sensing the temperature of the hot water and signaling the detected temperature to the controller.

Each of the third bypass line and the fourth bypass line may be provided with a plurality of valves controlled according to a signal of the controller.

The air compressor waste heat recovery apparatus may further include a cooler connected to at least one of the primary compressed air pipe and the secondary compressed air pipe and cooling the primary compressed air or the secondary compressed air.

The cooler may include a first cooler installed in a fifth bypass line connected to the first compressed air pipe and a second cooler installed in a sixth bypass line connected to the second compressed air pipe. Each of the fifth bypass line and the sixth bypass line may be provided with a plurality of valves controlled according to a signal of the controller.

The primary compressed air pipe disposed in front of the first cooler based on the movement path of the primary compressed air senses the temperature of the primary compressed air, signals the detected temperature, and applies the signal to the controller. A first temperature sensor may be installed, and the secondary compressed air pipe disposed in front of the second cooler based on the movement path of the secondary compressed air senses the temperature of the secondary compressed air and detects the detected temperature. A second temperature sensor may be installed to signal and apply to the controller.

The air compressor waste heat recovery apparatus is connected to at least one of the primary compressed air pipe and the secondary compressed air pipe, and includes a heat storage tank and the heat storage tank configured to receive heat from the primary compressed air or the secondary compressed air; At least one circulation pipe connecting the regenerator may be further included, and the regenerator may be supplied with heat stored in the heat storage tank by a fluid flowing through the circulation pipe.

The heat storage tank is connected to the primary compressed air pipe and the secondary compressed air pipe,

A seventh bypass line is formed in the primary compressed air pipe to bypass the primary compressed air into the heat storage tank, and the secondary compressed air pipe does not flow into the heat storage tank. An eighth bypass line may be formed to bypass the eighth bypass line.

Each of the seventh bypass line and the eighth bypass line may be provided with a plurality of valves controlled according to a signal of the controller.

The air compressor waste heat recovery apparatus may further include a heating means connected to the heat storage tank and supplying heat to the heat storage tank.

According to an embodiment of the present invention, the air compressor waste heat recovery apparatus produces compressed air from an air compressor and uses it in a high-pressure driving apparatus, and uses heating, cooling, and hot water by using waste heat generated in the process of compressing air of the air compressor. Production can improve energy efficiency.

In addition, according to an embodiment of the present invention, it is possible to selectively use the waste heat generated from the air compressor for cooling and heating and to make hot water can improve the waste heat recovery performance.

1 is a block diagram of a waste heat recovery apparatus of the air compressor according to an embodiment of the present invention.
Figure 2 is a block diagram showing a control method of the air compressor waste heat recovery apparatus according to an embodiment of the present invention.
Figure 3 is a block diagram of an air compressor waste heat recovery apparatus according to another embodiment of the present invention.
Figure 4 is a block diagram of an air compressor waste heat recovery apparatus according to another embodiment of the present invention.
5 is another configuration of the air compressor waste heat recovery apparatus according to another embodiment of the present invention.
Figure 6 is a block diagram of an absorption type air conditioning system using waste heat in the air compressor according to an embodiment of the present invention.
Figure 7 is a block diagram showing a heating mode of the absorption type air-conditioning and heating device using the waste heat of the air compressor according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Then, the air compressor waste heat recovery apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

1 and 2, the air compressor according to an embodiment of the present invention has been described based on the configuration of the two air compressors (100,200) in parallel, which is only one embodiment, one If using the above air compressor can be applied in any case.

The air compressor waste heat recovery apparatus includes a first air compressor 100 for first compressing air, a second air compressor 200 for secondarily compressing air compressed by the first air compressor 100, and a high temperature. In the high-temperature primary compressed air and the second air compressor 200 generated by the regenerators 130 and 140 and the first air compressor 100 of the absorption type heating and cooling unit which are heat exchanged with the primary compressed air and the high temperature secondary compressed air And hot water heat exchangers 110 and 120 that exchange heat with the generated high temperature secondary compressed air to produce hot water. And the air compressor waste heat recovery device is provided with a controller 300 for controlling each component.

The first air compressor 100 is a device that primarily compresses the air sucked from the outside through the external air suction pipe 180, and has a relatively low air pressure compared to the second air compressor 200. to be. The first air compressor 100 is connected to the primary compressed air pipe 102, and thus, the high temperature primary compressed air generated in the first air compressor 100 is the primary compressed air pipe 102. Is discharged through. At this time, since the first compressed air pipe 102 is a pipe connecting the first air compressor 100 and the second air compressor 200, the first compressed air is first made through the first compressed air pipe 102. 2 is supplied to the air compressor (200).

The second air compressor 200 is a device that compresses the first compressed air compressed first, and is a high pressure air compressor having a relatively large air compression pressure as compared to the first air compressor 100. The second air compressor 200 is connected to the secondary compressed air pipe 202, and thus, the high temperature secondary compressed air generated in the second air compressor 200 is transferred to the secondary compressed air pipe 202. It is discharged and supplied to a driving device that requires compressed air.

The regenerator is installed in the primary compressed air pipe 102 and heat exchanged with the high temperature primary compressed air to the first regenerator 130 and the secondary compressed air pipe 202 to exchange heat with the high temperature secondary compressed air. And a second player 140 to be used.

The first regenerator 130 is connected to the primary compressed air pipe 102. At this time, the primary compression is performed between the inlet-side pipe 104 drawn into the first regenerator 130 and the outlet-side pipe 106 drawn out through the first regenerator 130 among the primary compressed air pipes 102. It is connected to the first bypass line 142 to bypass the air does not pass through the first regenerator 130. The inlet-side pipe 104 and the outlet-side pipe 106 are provided with a first valve group for switching the flow path to selectively heat exchange the first regenerator 130. The first valve group includes a first valve 132 installed in the inlet side pipe 104, a second valve 134 installed in the outlet side pipe 106, and a third installed in the first bypass line 142. Valve 136.

The second regenerator 140 is connected to the secondary compressed air pipe 202. At this time, the secondary compression is performed between the inlet-side pipe 204, which is introduced into the second regenerator 140, of the secondary compressed air pipe 202, and the outlet-side pipe 206, which is drawn out through the second regenerator 140, and is drawn out. A second bypass line 242 is connected to bypass air not to pass through the second regenerator 140. In the inlet-side pipe 204 and the outlet-side pipe 206, a second valve group for switching the flow path to selectively heat exchange the second regenerator 140 is provided. The second valve group includes a first valve 232 installed in the inlet side pipe 204, a second valve 234 provided in the outlet side pipe 206, and a third valve installed in the second bypass line 242. Valve 236.

Referring to the operation of the regenerator configured as described above in detail as follows.

When the air conditioner is turned on, the air conditioner on / off sensor 186 installed in the air conditioner applies the signal to the controller 300. Then, the controller 300 opens the first valves 132 and 232 and the second valves 134 and 234 and closes the third valves 136 and 236. Then, the high temperature primary compressed air passes through the first regenerator 130 and heat exchanges with the high concentration absorbent solution in the first regenerator 130 and is supplied to the second air compressor 200 through the withdrawal-side pipe 106. do. Under this flow, the high temperature secondary compressed air compressed in the second air compressor 200 is subsequently exchanged with the high concentration absorbent solution in the second regenerator 140 while passing through the second regenerator 140.

Thus, the regenerator is the first heat exchange with the primary compressed air, the second heat exchange with the secondary compressed air, the efficiency can be improved to improve the performance of the cooling and heating system, and the energy is saved by using waste heat. .

On the contrary, when the air conditioner is turned off, the controller 300 opens the third valves 136 and 236 and closes the first valves 132 and 232 and the second valves 134 and 234. Then, the primary compressed air flows into the outlet side pipe 106 through the first bypass line 142 without passing through the first regenerator 130. The secondary compressed air is also discharged to the outlet side pipe 206 through the second bypass line 242 without passing through the second regenerator 140. Meanwhile, the controller 300 may control the compressed air to be heat exchanged with only one of the first and second regenerators 130 and 140, and the first and second regenerators 130 and 140 may be provided with one player as shown in FIG.

As such, the first regenerator 130 and the second regenerator 140 are devices that first heat exchange with the high temperature compressed air compressed by the first air compressor 100 and the second air compressor 200.

Based on the flow of compressed air, the hot water heat exchanger is disposed behind the regenerators 130 and 140 and heat exchanges with the compressed air introduced through the regenerators 130 and 140. The hot water heat exchangers 110 and 120 include a first heat exchanger 110 installed in the primary compressed air pipe 102 and a second heat exchanger 120 installed in the secondary compressed air pipe 202.

The first heat exchanger 110 is installed in the third bypass line 108 formed in the primary compressed air pipe 102. Water flow tubes 172, 178, and 174 are connected to the first heat exchanger 110. The water flow tubes 172, 178, 174 receive heat from the primary compressed air flowing through the third bypass line 108.

The second heat exchanger 120 is installed in the fourth bypass line 208 formed in the secondary compressed air pipe 202. Water flow tubes 172, 178, and 174 are connected to the second heat exchanger 120. The water flow tubes 172, 178, 174 receive heat from the secondary compressed air flowing through the fourth bypass line 208.

The first heat exchanger 110 is connected to a water supply pipe 172 through which cold water is supplied, and the second heat exchanger 120 exchanges hot water with hot compressed air to discharge the heated hot water to the outside. ) May be connected. The first heat exchanger 110 and the second heat exchanger 120 are connected to the connection pipe 178 to pass the first heat exchanged water to the second heat exchanger 120 while passing through the first heat exchanger 110. Can be introduced so that secondary heat exchange takes place. However, the water flow tubes 172, 178, and 174 may be installed separately in the first heat exchanger 110 and the second heat exchanger 120, respectively. In this case, the water supply pipe 172 and the hot water discharge pipe 174 may be separately installed in each of the first heat exchanger 110 and the second heat exchanger 120.

The hot water discharge pipe 174 is installed with a hot water temperature sensor 182 that detects the temperature of the hot water and applies the signal to the controller 300. However, the hot water temperature sensor 182 may be omitted.

Meanwhile, third valve groups 122, 124, and 126 are installed in the primary compressed air pipe 102 and the third bypass line 108 so as to selectively heat exchange the first heat exchanger 110 by switching the flow path. Fourth valve groups 222, 224, and 226 are installed in the secondary compressed air pipe 202 and the fourth bypass line 208 so as to selectively heat exchange the second heat exchanger 120 by switching the flow path.

The third valve group includes a first valve 122 installed at an inlet side of the third bypass line 108, a second valve 124 and a third bypass installed at an outlet side of the third bypass line 108. And a third valve 126 installed in the primary compressed air pipe 102 connecting the inlet and the outlet of the pass line 108.

The fourth valve group includes a first valve 222 installed at an inlet side of the fourth bypass line 208, a second valve 224 and a fourth bypass installed at an outlet side of the fourth bypass line 208. And a third valve 226 installed in the secondary compressed air pipe 202 connecting the inlet and the outlet of the pass line 208.

The above valves are valves operated according to an electric signal applied from the controller 300, and a solenoid type, a step motor type, and the like may be used.

Referring to the operation of the hot water heat exchanger configured as described above in detail as follows.

In the hot water on / off sensor 184 installed in the hot water supply device, whether the hot water supply device is on / off and the hot water temperature signal from the hot water temperature sensor 182 is applied to the controller 300. As a result, the power supply of the hot water supply device is turned on. In this state, when the temperature of the hot water discharged to the hot water discharge pipe 174 is lower than or equal to the set temperature, the controller 300 opens the first valves 122 and 222 and the second valves 124 and 224 and closes the third valves 126 and 226. .

Then, the high temperature primary compressed air is supplied to the first heat exchanger 110 through the third bypass line 108 and heat exchanged with water passing through the first heat exchanger 110 to first heat the water. The high temperature secondary compressed air is supplied to the second heat exchanger 120 through the fourth bypass line 208 and is heat exchanged with water passing through the second heat exchanger 120. Accordingly, the water is primarily heated in the first heat exchanger 110 and secondly heated in the second heat exchanger 120, thereby increasing the temperature of the hot water, and shortening the time for generating the hot water. .

On the contrary, when the hot water supply is turned off or the temperature of the hot water discharged to the hot water discharge pipe 174 is higher than or equal to the set temperature, the controller 300 opens the third valves 126 and 226, and the first valves 122 and 222 and the first valves. 2 Close the valves (124, 224). Then, the hot primary compressed air passes directly through the primary compressed air pipe 102 without passing through the third bypass line 108, and the hot secondary compressed air passes through the fourth bypass line 208. It passes through the secondary compressed air pipe 202 without passing through.

Here, the controller 300 may control the compressed air to be heat exchanged with only one of the first heat exchanger 110 and the second heat exchanger 120. Meanwhile, the first heat exchanger 110 and the second heat exchanger 120 may be provided as one hot water heat exchanger without being separated.

Meanwhile, the operation of the hot water heat exchanger may be determined only by the hot water on / off sensor 184 regardless of the hot water temperature sensor 182.

The driving device is a device that uses high pressure compressed air as a power source. At this time, the high temperature and high pressure compressed air supplied to the driving apparatus must be cooled before being supplied to the driving apparatus, and for this purpose, a cooler is provided.

The coolers 150 and 160 may not operate the regenerators 130 and 140 and the hot water heat exchangers 110 and 120, or the temperature of the compressed air heat exchanged through the regenerators 130 and 140 and the hot water heat exchangers 110 and 120 may be increased. If it does not fall below the set temperature, it is operated to maintain the temperature of the compressed air finally supplied to the driving device at the proper temperature.

The coolers 150 and 160 are installed in the primary compressed air pipe 102 disposed on the rear side of the first heat exchanger 110 to cool the primary compressed air, and the first cooler 150 and the second heat exchanger 120 to cool the primary compressed air. And a second cooler 160 installed in the secondary compressed air pipe 202 disposed at the rear side of the second cooler 160 to cool the secondary compressed air.

At this time, based on the flow of compressed air, the first temperature sensor 500 is provided in front of the first cooler 150 to measure the temperature of the compressed air immediately before flowing into the first cooler 150, and the measurement If the temperature is greater than or equal to the set temperature, the controller 300 transmits a temperature signal to allow the compressed air to flow into the first cooler 150, and if the measured temperature is lower than the set temperature, it does not pass the first cooler 150. .

 In addition, the second temperature sensor 510 is provided in front of the second cooler 160 to measure the temperature of the compressed air immediately before flowing into the second cooler 160, and if the measured temperature is equal to or greater than the set temperature, the controller The temperature signal is transmitted to the 300 to allow the compressed air to flow into the second cooler 160, and if the measured temperature is lower than the set temperature, the second cooler 160 does not pass.

A fifth bypass line 117 is formed in the primary compressed air pipe 102 disposed on the rear side of the first heat exchanger 110, and the first cooler 150 is formed on the fifth bypass line 117. ) Is installed. In this case, a fifth valve group for switching the flow path is installed in the primary compressed air pipe 102 and the fifth bypass line 117 so that the first cooler 150 is selectively used.

The fifth valve group includes a first valve 112 installed at an inlet side of the fifth bypass line 1117, a second valve 114 and a fifth bypass installed at an outlet side of the fifth bypass line 117. And a third valve 116 installed in the primary compressed air pipe 102 connecting the inlet and the outlet of the pass line 106.

In addition, a sixth bypass line 217 is formed in the secondary compressed air pipe 202 disposed on the rear side of the second heat exchanger 120, and a second cooler is formed on the sixth bypass line 217. 160 is installed. At this time, the second compressed air pipe 202 and the sixth bypass line 217 is provided with a sixth valve group for switching the flow path so that the second cooler 160 is selectively used.

The sixth valve group includes the first valve 212 provided at the inlet side of the sixth bypass line 217, the second valve 214 and the sixth bypass provided at the outlet side of the sixth bypass line 217. And a third valve 216 installed in the secondary compressed air pipe 202 connecting the inlet and the outlet of the pass line 217.

The above valves are valves that open and close the pipe when power is supplied, and various types of valves, such as a solenoid type and a step motor type, may be applied.

As described above, referring to the operation of the cooler configured, first, when the temperature of the primary compressed air is less than or equal to the set temperature by judging a signal applied from the first temperature sensor 500, the controller 300 determines the first valve 112. And the second valve 114 is closed, and the third valve 116 is opened. Then, the primary compressed air passes through the primary compressed air pipe 102 without passing through the first cooler 150. When the temperature of the primary compressed air is higher than or equal to the set temperature, the controller 300 closes the third valve 116 and opens the first valve 112 and the second valve 114. Then, the primary compressed air is cooled while passing through the first cooler 150.

Similarly, if the temperature of the secondary compressed air is less than or equal to the set temperature by determining the signal applied from the second temperature sensor 510, the controller 300 closes the first valve 212 and the second valve 214, and 3 Open the valve 216. Then, the secondary compressed air passes through the secondary compressed air pipe 202 without passing through the second cooler 160. When the temperature of the secondary compressed air is higher than or equal to the set temperature, the controller 300 closes the third valve 216 and opens the first valve 212 and the second valve 214. Then, the secondary compressed air is cooled while passing through the second cooler 160 and is supplied to the driving device through the secondary compressed air pipe 202. At this time, in order to more reliably control the temperature of the secondary compressed air supplied to the drive device, the secondary compressed air pipe 202 behind the second cooler 160 of the secondary compressed air finally supplied to the drive device. Compressed air temperature sensor 170 for sensing the temperature is installed, the compressed air temperature sensor 170 also communicates the temperature signal with the controller 300 to control the temperature of the secondary compressed air. At this time, the compressed air temperature sensor 170 may be omitted to simplify the device configuration. In addition, a sensor and an alarm may be installed in place of the temperature sensor 170 to detect the pressure, temperature, flow rate, etc. of the compressed air and transmit the same to the controller 300. If the flow of compressed air decreases due to damage to the pipe through which compressed air flows, or if the compressed air does not correspond to the set temperature or pressure, the sensor detects it and delivers it to the controller 300, and the controller 300 processes the process. You can stop and sound an alarm through the alarm to alert the operator.

The controller 300 may control the compressed air to pass through only one of the first cooler 150 and the second cooler 160 according to the temperature of the compressed air.

3 is a block diagram of an air compressor waste heat recovery apparatus according to another embodiment of the present invention.

3, the air compressor waste heat recovery apparatus according to another embodiment of the present invention is the same as the air compressor waste heat recovery apparatus according to an embodiment of the present invention, except that the regenerator 190 has one structure. .

Hereinafter, an air compressor waste heat recovery apparatus according to another embodiment of the present invention will be described with reference to FIG. 4.

Figure 4 is a block diagram of an air compressor waste heat recovery apparatus according to another embodiment of the present invention.

4, the air compressor waste heat recovery apparatus according to another embodiment of the present invention, compared with the air compressor waste heat recovery apparatus according to the embodiment of Figures 1 to 3, the first regenerator 130 and the second regenerator The heat storage tank 600 is connected to the primary compressed air pipe 102 and the secondary compressed air pipe 202 in front of the 140.

The heat storage tank 600 may be formed as a storage tank in which a heat medium such as water or mercury is stored, and receives heat from hot compressed air discharged from the air compressors 100 and 200. For example, the heat storage tank 600 stores heat corresponding to a temperature of about 95 ° C. by using heat generated from compressed air of about 150 ° C. or higher discharged from the air compressors 100 and 200, and circulates the heat. It is supplied to the regenerators 130 and 140 through the pipe 107. A fluid such as water flows inside the circulation pipe 107 and receives heat from the heat storage tank 600 and supplies it to the regenerators 130 and 140. The fluid flowing through the heat medium circulation pipe 107 receives heat from the heat medium stored in the heat storage tank 600. However, the heat medium circulation pipe 107 of the side connected to the heat storage tank 600 may be opened so that the heat medium of the heat storage tank 600 flows directly to the circulation pipe 107.

On the other hand, the inlet pipe (102a) and the primary compressed air discharged from the heat storage tank 600, the primary compressed air flows into the heat storage tank 600 of the primary compressed air pipe 102 is connected to the heat storage tank (600). The pipes 102b are connected to a seventh bypass line 650 that bypasses primary compressed air not to pass through the heat storage tank 600. Here, the inlet pipe (102a) and the discharge pipe (102b) is for convenience of description, each of which is part of the primary compressed air pipe 102 in contact with the heat storage tank 600 in appearance. On the other hand, the inlet pipe 102a and the discharge pipe 102b are provided with a seventh valve group for switching the flow path. The seventh valve group includes a first valve 611 installed in the inlet pipe 102a, a second valve 612 provided in the discharge pipe 102b, and a third valve installed in the seventh bypass line 650 ( 613).

In addition, the inlet pipe 202a and the secondary compressed air discharged from the heat storage tank 600 in which the secondary compressed air flows into the heat storage tank 600 among the secondary compressed air pipes 202 connected to the heat storage tank 600. The pipe 202b is connected to an eighth bypass line 660 that bypasses the secondary compressed air not to pass through the heat storage tank 600. An inlet pipe 202a and an outlet pipe 202b are provided with an eighth valve group for switching the flow path. The eighth valve group includes a first valve 614 installed in the inlet pipe 202a, a second valve 615 installed in the discharge pipe 202b, and a third valve installed in the eighth bypass line 660. 616).

Referring to the operation of the heat storage tank 600 configured as described above in detail as follows.

When the air conditioner is turned on, the air conditioner on / off sensor 186 installed in the air conditioner applies the signal to a controller (not shown). Then, the controller opens the first valves 611 and 614 and the second valves 612 and 615 and closes the third valves 613 and 616. Then, the high temperature primary compressed air passes through the heat storage tank 600 to supply heat to the heat storage tank 600. The heat storage tank 600 supplies heat to the fluid flowing through the circulation pipe 107, and the fluid supplied with the heat passes through the first regenerator 130 and exchanges heat with the high concentration absorbent solution of the first regenerator 130. The primary compressed air discharged through the heat storage tank 600 may directly flow into the second air compressor 200 without passing through at least one of the first heat exchanger 110 and the first cooler 150 or any one of them. Can be.

In addition, the secondary compressed air discharged from the second air compressor 200 passes through the heat storage tank 600 along the secondary compressed air pipe 202 and supplies heat to the heat storage tank 600. The heat storage tank 600 supplies heat to the fluid flowing through the circulation pipe 107, and the fluid supplied with the heat passes through the second regenerator 140 and heat exchanges with the high concentration absorbent solution of the second regenerator 140. Secondary compressed air discharged through the heat storage tank 600 may be directly supplied to the driving device without passing through at least one or any one of the second heat exchanger 120 and the second cooler 150.

On the contrary, when the air conditioner is turned off, the controller opens the third valves 613 and 616 and closes the first valves 611 and 614 and the second valves 612 and 615. Then, the primary compressed air is not supplied to the heat storage tank 600 but is discharged to the primary compressed air pipe 102 on the discharge pipe 102b side through the seventh bypass line 650. The secondary compressed air is also not supplied to the heat storage tank 600, but is discharged to the secondary compressed air pipe 202 on the discharge pipe 202b side through the eighth bypass line 660.

The heat storage tank 600 may be provided with a heating means 630 as an auxiliary heat source to assist the heat of the compressed air. The heating means 630 may be used a steam heater or a gas burner and the like easily available in the field. The heating means 630 may also be controlled by the controller 300.

Due to the presence of an auxiliary heat source such as the heating means 630, the heat quantity of the heat storage tank 600 can be kept constant at all times.

Meanwhile, the first player 130 and the second player 140 may be provided as one player as shown in FIG. 3. In addition, the configurations described in the embodiments of FIGS. 1 to 3 may be applied to the present embodiment.

5 is another configuration of the air compressor waste heat recovery apparatus according to another embodiment of the present invention, the only difference is that the heat storage tank is installed separately so as to correspond to each of the first regenerator 130 and the second regenerator 140, the rest The construction and operation are almost the same as in the other embodiment of the present invention of FIG. That is, the heat storage tank is divided into a first heat storage tank 610 and a second heat storage tank 620. Each of the first heat storage tank 610 and the second heat storage tank 620 is provided with heating means 630 serving as an auxiliary heat source. In addition, each of the first heat storage tank 610 and the second heat storage tank 620 is provided with a seventh bypass line 650 and an eighth bypass line 660 for bypassing the primary compressed air and the secondary compressed air. The seventh valve group 611, 612, 613, and the eighth valve group 614, 615, 616, respectively, for converting flow paths, are installed in the inlet pipes 102a, 202a and the discharge pipes 102b, 202b around them. do.

The configurations described in the embodiments of FIGS. 1 to 4 may also be applied to this embodiment.

Hereinafter, an absorption type air conditioning apparatus according to an embodiment of the present invention will be described with reference to FIG. 6.

6 is a block diagram of an absorption type heating and cooling device having a regenerator according to an embodiment of the present invention.

Looking at the operation of the absorption type air-conditioning and heating device 400 using the waste heat of the air compressor according to an embodiment of the present invention, the first compressed air pipe 102 is disposed inside the first regenerator 130 and the second regenerator 140. And heat supplied from the high-pressure compressed air passing through the secondary compressed air pipe 202 heats and boils the high concentration absorbent solution C stored in the first regenerator 130 and the second regenerator 140. Since only the bay is evaporated, the supplied thermal energy generates refrigerant vapor and low concentration absorbent solution (A) from the high concentration absorbent solution (C). In addition, the generated refrigerant vapor and the low concentration absorbent solution (A) are used to operate the condenser 410, the evaporator 420, and the absorber 430 connected to the regenerators 130 and 140, thereby absorbing air conditioning and heating device using waste heat of the air compressor ( Absorption refrigeration cycle by 400 is completed. That is, the absorption air-conditioning unit 400 can reuse the heat energy generated and discarded in the air compressors 100 and 200, thereby producing compressed air and heating, cooling, hot water and electricity. Meanwhile, heat supplied to the regenerators 130 and 140 may be supplied by the circulation pipe 107 of FIGS. 4 and 5.

Hereinafter, with reference to Figure 6, it will be described the operation of the cooling mode by the absorption type heating and cooling device 400 using the air compressor waste heat according to an embodiment of the present invention configured as described above.

The heat energy absorbed from the high-pressure compressed air passing through the primary compressed air pipe 102 and the secondary compressed air pipe 202 disposed inside the regenerators 130 and 140 heats the high concentration absorbent solution C to boil the refrigerant. Evaporative separation separates the refrigerant vapor and the low concentration absorbent solution (A) from the high concentration absorbent solution (C). Subsequently, the refrigerant vapor is supplied to the condenser 410, and the condenser 410 cools the refrigerant vapor to generate a refrigerant liquid B. At this time, the refrigerant liquid B is supplied to the evaporator 420, the supplied refrigerant liquid B is sprayed on the refrigerant pipe 440 disposed inside the evaporator 420, and the refrigerant liquid B is evaporated. Is converted into refrigerant vapor. The low concentration absorbent solution A generated by the regenerators 130 and 140 is supplied to the absorber 430, and the absorber 430 absorbs the refrigerant vapor supplied from the evaporator 420 into the supplied low concentration absorbent solution A. A low temperature, high concentration absorbent solution (C) is produced. At this time, the generated high concentration absorbent solution (C) is supplied to the regenerator (130, 140) and circulated repeatedly, thereby completing the absorption refrigeration cycle by the absorption air-conditioning and heating device 400 using the waste air of the air compressor.

In particular, by the operation of a blower fan (not shown) connected to the indoor unit 450, the cooling air is supplied to the room in which the absorption type air conditioner 400 using the waste air of the air compressor is installed, thereby cooling the room. .

Next, look at the operation of the heating mode by the absorption type air conditioning unit (400).

As shown in FIG. 7, the heating mode of the absorption type cooling device 400, the regenerators 130 and 140 absorb heat energy from the high-temperature compressed air passing through the inner side of the primary compressed air pipe 102 to absorb the high concentration absorbent solution (C). The refrigerant is evaporated and separated by heating to form a refrigerant vapor and a low concentration absorbent solution (A) from the high concentration absorbent solution (C). At this time, the refrigerant vapor is supplied to the evaporator 420 through the pipe 442, and heat exchanges with the refrigerant passing through the inside of the refrigerant pipe 440 disposed inside the evaporator 420. Therefore, since the refrigerant flowing inside the indoor unit 450 connected to one side of the refrigerant pipe 440 becomes a heating heat source, the operation of the blower fan (not shown) connected to the indoor unit 450 causes the present invention. Into the room where the absorption air-conditioning and heating unit 400 using the waste heat of the air compressor is installed, the warm air is supplied, thereby heating.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

100: first air compressor 102: primary compressed air piping
110: first heat exchanger 120: second heat exchanger
130: first player 140: second player
150: first cooler 160: second cooler
200: second air compressor 202: secondary compressed air piping
500: first temperature sensor 510: second temperature sensor
600: heat storage tank 630: heating means
142: first bypass line 242: second bypass line
108: third bypass line 208: fourth bypass line
117: fifth bypass line 217: sixth bypass line

Claims (16)

First air compressor,
A primary compressed air pipe connected to the first air compressor and discharging high temperature primary compressed air,
A second air compressor connected to the first compressed air pipe;
A secondary compressed air pipe connected to the second air compressor and discharging high temperature secondary compressed air, and
A regenerator connected to at least one of the primary compressed air pipe and the secondary compressed air pipe
Including;
The first compressed air pipe is connected to a first bypass line for bypassing the primary compressed air to the second air compressor without passing through the regenerator, and the secondary compressed air pipe is connected to the secondary compressed air pipe. A second bypass line connected to bypass the regenerator,
Air compressor waste heat recovery device. In claim 1,
The regenerator includes a first regenerator installed in the primary compressed air pipe and heat exchanged with the primary compressed air, and a second regenerator installed in the secondary compressed air pipe and heat exchanged with the secondary compressed air. Air compressor waste heat recovery device. In claim 2,
And each of the first bypass line and the second bypass line is provided with a valve controlled according to a signal from a controller. First air compressor,
A primary compressed air pipe connected to the first air compressor and discharging high temperature primary compressed air,
A second air compressor connected to the first compressed air pipe;
A secondary compressed air pipe connected to the second air compressor and discharging high temperature secondary compressed air, and
Hot water heat exchanger installed in the third and fourth bypass lines connected to the primary compressed air pipe and the secondary compressed air pipe, respectively, and heat exchanged with the primary compressed air and the secondary compressed air.
More,
The hot water heat exchanger has a first heat exchanger installed in the third bypass line and a second heat exchanger installed in the fourth bypass line.
Air compressor waste heat recovery device. In claim 4,
And a regenerator connected to at least one of the primary compressed air pipe and the secondary compressed air pipe.
And the first heat exchanger is installed in the primary compressed air pipe disposed behind the regenerator based on the movement path of the primary compressed air. delete In claim 4,
A water supply pipe is connected to the first heat exchanger, a hot water discharge pipe is connected to the second heat exchanger, and the first heat exchanger and the second heat exchanger are connected to a connection pipe. In claim 7,
The hot water discharge pipe is an air compressor waste heat recovery device that is installed in the hot water temperature sensor for sensing the temperature of the hot water and signaling the detected temperature to the controller. 9. The method of claim 8,
Each of the third bypass line and the fourth bypass line is provided with a valve controlled in response to a signal from the controller. delete First air compressor,
A primary compressed air pipe connected to the first air compressor and discharging high temperature primary compressed air,
A second air compressor connected to the first compressed air pipe;
A secondary compressed air pipe connected to the second air compressor and discharging high temperature secondary compressed air;
A regenerator for a cooling and heating device connected to at least one of the primary compressed air pipe and the secondary compressed air pipe,
First and second coolers installed in a fifth bypass line and a sixth bypass line respectively connected to the primary compressed air pipe and the secondary compressed air pipe to cool the primary compressed air and the secondary compressed air; , And
A plurality of valves provided in the fifth bypass line and the sixth bypass line and controlled according to a signal of a controller;
Air compressor waste heat recovery apparatus comprising a. In claim 11,
The primary compressed air pipe disposed in front of the first cooler based on the movement path of the primary compressed air senses the temperature of the primary compressed air, signals the detected temperature, and applies the signal to the controller. 1 Temperature sensor is installed
The second compressed air pipe disposed in front of the second cooler based on the movement path of the secondary compressed air senses the temperature of the secondary compressed air and signals the detected temperature to apply to the controller. 2 Temperature sensor is installed
Air compressor waste heat recovery device. First air compressor,
A primary compressed air pipe connected to the first air compressor and discharging high temperature primary compressed air,
A second air compressor connected to the first compressed air pipe;
A secondary compressed air pipe connected to the second air compressor and discharging high temperature secondary compressed air;
A heat storage tank connected to at least one of the primary compressed air pipe and the secondary compressed air pipe, and receiving heat from the primary compressed air or the secondary compressed air, and
A regenerator connected to the heat storage tank,
Including;
The regenerator receives the heat stored in the heat storage tank
Air compressor waste heat recovery device. In claim 13,
The heat storage tank is connected to the primary compressed air pipe and the secondary compressed air pipe,
A seventh bypass line is formed in the primary compressed air pipe to bypass the primary compressed air into the heat storage tank, and the secondary compressed air pipe is not introduced into the heat storage tank. The eighth bypass line is formed to bypass the
Air compressor waste heat recovery device. In claim 13,
And a heating means connected to the heat storage tank and supplying heat to the heat storage tank. Air compressor waste heat recovery apparatus as defined in claim 1, 11 or 13,
Condenser, evaporator and absorber connected to the regenerator
Heating and cooling device comprising a.

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