KR100931705B1 - Geothermal air-conditioning system of group living facilities - Google Patents

Abstract

PURPOSE: A cooling and heating system for housing facilities using terrestrial heat is provided to use terrestrial heat for cooling-and-heating of the housing facilities using a geothermal heat exchanger, an air handling unit, and a heat pump unit. CONSTITUTION: A cooling and heating system(10) for housing facilities using terrestrial heat comprises a geothermal exchanger(100), a plurality of air handling units(200), a heat pump unit(300), and a controller. The geothermal exchanger absorbs geothermal exchanger and emits the heat to the underground. The air handling unit is arranged at each house and controls the indoor temperature of each house. The heat pump unit is connected to the geothermal exchanger and a plurality of air handling units through pipes and transfers the heating source of the high temperature to low temperature or transfers the heating source of the low temperature to the high temperature. The controller controls the operation degree of the heat pump unit.

Description

Geothermal air-conditioning system of group living facilities

The present invention relates to a cooling and heating system for a group residential facility using geothermal heat, and more particularly, geothermal heat can be used for cooling and heating of a group residential facility, and the installation location of the air handling unit can be changed in various ways, as well. The present invention relates to a heating and cooling system for a group residential facility using geothermal heat, which can substantially improve the efficiency of a facility's air conditioning system.

In general, the air conditioning system is a system for cooling or heating air in an indoor space, such as an office or a house, to keep the indoor space comfortable, and constitute a series of refrigerant cycles including compression, condensation, expansion, and evaporation.

However, the air conditioner system, which is a cooling system installed in the existing group residential facilities, has a long line length, it is difficult to apply the entire automatic control system, and has a lot of energy consumption.

In consideration of these problems, much attention has recently been focused on the development of an air conditioning system using geothermal energy for the efficient use of energy and ecosystem protection. At present, a lot of research and development is in progress.

However, geothermal air conditioning systems are currently applied only to small facilities such as offices or vinyl houses, and have not yet been applied to group residential facilities such as apartments or officetels.

Therefore, there is a strong demand for research and development on the air conditioning system of group residential facilities using geothermal heat.

It is an object of the present invention, geothermal heat can be used for heating and cooling of residential facilities, not only can change the installation position of the air handling unit in various ways, but also can improve the efficiency of the heating and cooling system of the collective housing facilities geothermal It is to provide a heating and cooling system for group residential facilities.

The object is, according to the present invention, a geothermal heat exchanger for absorbing geothermal heat or releasing heat into the ground; A plurality of air handling units provided for each generation of the group residential facilities and disposed in each generation to adjust the indoor temperature of each generation; And a heat pump unit connected to the geothermal heat exchanger and the plurality of air handling units by a pipe and transferring a high temperature heat source to a low temperature or a low temperature heat source to a high temperature. Achieved by the system.

The air handling unit may include a heat exchanger configured to heat or cool ambient air through heat exchange with the heat pump unit; And a blower provided at one side of the heat exchanger to blow air heated or cooled through the heat exchanger to each chamber for each generation.

The air handling unit may further include a mixing unit provided at the other side of the heat exchange unit to mix air in the air handling unit.

The air-conditioning system for a group residential facility using the geothermal heat, the discharge duct is coupled to one side of the air handling unit for delivering the wind generated through the blower to each chamber for each generation; A suction duct coupled to the other side of the air handling unit to transfer air sucked from each chamber for each generation to the plurality of air handling units; And an external air inlet duct coupled to the air handling unit adjacent to the mixing unit to transfer external air to the air handling unit.

The district heating and cooling system using the geothermal heat may further include an internal air discharge duct coupled to one side of the suction duct to discharge a part of air circulated along the suction duct to the outside.

A portion of the discharge duct and a portion of the suction duct may be disposed between the ceiling of any one of the plurality of floors of the collective residence facility and the bottom wall of the upper one of the one floor.

The heat pump unit may be a central heat pump unit provided in a machine room for cooling and heating a group residential facility.

The pipe, the geothermal heat supply pipe provided between the geothermal heat exchanger and the central heat pump unit; And a generation temperature control pipe provided between the central heat pump unit and the air handling unit, wherein the geothermal heat exchanger and the central heat pump unit exchange heat with each other through a secondary refrigerant flowing along the geothermal heat supply pipe. The central heat pump unit and the air handling unit may mutually exchange heat through cold water flowing along the generation temperature control pipe.

The district heating and cooling system using the geothermal heat may further include a control unit for controlling the operation degree of the central heat pump unit based on the total generation of cold water consumption of the group residential facility.

When the difference between the indoor desired temperature and the outdoor temperature of each generation is small, the controller may control the minimum cold water to flow through the air handling unit, thereby adjusting the indoor air conditioning environment by replacing the outside air with the indoor air.

The district heating and cooling system using the geothermal heat may further include at least one secondary refrigerant circulation pump provided in the geothermal heat supply pipe to circulate the secondary refrigerant.

The controller may control the degree of operation of the secondary refrigerant circulation pump based on the circulation amount of the secondary refrigerant according to the total generation of cold water used in the group residential facility.

The generation temperature control pipe, the aggregate cold water supply pipe extending from one side of the central heat pump unit; A plurality of generation cold water supply pipes branched from the collective cold water supply pipes to supply the cold water to the plurality of air handling units, respectively; An aggregate cold water discharge pipe extending from the other side of the central heat pump unit; And a plurality of generation cold water discharge pipes branched from the collective cold water discharge pipes to respectively discharge the cold water from the plurality of air handling units.

The heating and cooling system for a group residential facility using the geothermal heat may further include a floor heating connection pipe branched from the collective cooling water supply pipe and connected to the floor heating system pipe.

The cooling and heating system for a group residential facility using the geothermal heat may further include a flow control valve provided at a connection point between the collective cold water supply pipe and the floor heating connection pipe to adjust the amount of the cold water flowing through the collective cold water supply pipe. .

The controller may control the open angle of the flow control valve based on the total generation of cold water used in the group residential facility.

The cooling and heating system for a group residential facility using the geothermal heat may further include at least one cold water circulation pump provided in the collective cold water supply pipe to circulate the cold water.

The control unit may adjust the circulation amount of the cold water by controlling the degree of operation of the cold water circulation pump based on the total generation of cold water consumption of the group residential facility.

The heat pump unit may be a plurality of individual heat pump units provided for each generation of the group residential facility.

The pipe may include a geothermal heat supply pipe provided between the geothermal heat exchanger and the plurality of individual heat pump units; And a plurality of generation temperature regulating pipes provided between the plurality of individual heat pump units and the plurality of air handling units, wherein the geothermal heat exchanger and the plurality of individual heat pump units flow along the geothermal heat supply pipe. Heat exchange with each other through the secondary refrigerant, the plurality of individual heat pump unit and the plurality of air handling unit may be mutual heat exchange through the cold water flowing along the plurality of generation temperature control pipe, respectively.

The district heating and cooling system using the geothermal heat may further include a control unit for controlling the operation degree of each of the plurality of individual heat pump units based on the amount of cold water used for each generation of the group residential facility.

When the difference between the indoor desired temperature and the outdoor temperature of each generation is small, the controller may control the minimum cold water to flow through the air handling unit, thereby adjusting the indoor air conditioning environment by replacing the outside air with the indoor air.

The geothermal heat supply pipe, the aggregate geothermal heat supply pipe extending from the geothermal heat exchanger; A plurality of generation geothermal heat supply pipes branched from the aggregate geothermal heat supply pipes and respectively supplying the secondary refrigerant to the plurality of individual heat pump units; An aggregated geothermal outflow pipe extending from the geothermal heat exchanger; And a plurality of generation geothermal outflow pipes branched from the aggregate geothermal outflow pipes and each secondary refrigerant flows out of the plurality of individual heat pump units.

The district heating and cooling system using the geothermal heat may further include at least one secondary refrigerant circulation pump provided in the aggregate geothermal heat supply pipe to circulate the secondary refrigerant.

The controller may control the degree of operation of the secondary refrigerant circulation pump based on the circulation amount of the secondary refrigerant according to the total generation of cold water used in the group residential facility.

The district heating and cooling system using the geothermal heat, may further include a secondary refrigerant control valve provided in each of the plurality of generation geothermal heat supply pipe.

The control unit may control the secondary refrigerant control valve, respectively, to adjust the generation amount of circulation of the secondary refrigerant.

The plurality of generation temperature control pipe, each of the plurality of generation cold water supply pipe for supplying each of the cold water to the plurality of air handling unit side; And a plurality of generation cold water outlet pipes through which the cold water flows out from the air handling unit.

The heating and cooling system for a group residential facility using the geothermal heat may further include a plurality of floor heating connection pipes branched from the plurality of generation cold water supply pipes and connected to the floor heating system pipes.

The heating and cooling system for a group residential facility using geothermal heat is provided at a connection point of the plurality of generation cold water supply pipes and the plurality of floor heating connection pipes, respectively, and controls a plurality of flow rates for controlling the amount of cold water flowing in the generation cold water supply pipe. The valve may further include.

The controller may control the open angles of the plurality of flow control valves, respectively, based on the amount of cold water used for each generation of the group residential facility.

The district heating and cooling system using the geothermal heat may further include a plurality of flow meters provided in each of the plurality of generation cold water supply pipes to measure the usage amount of the cold water for each generation.

The air-conditioning system for a group residential facility using the geothermal heat may further include an on / off valve provided in each of the plurality of generation cold water discharge pipes to allow the cold water to flow or stop the flow.

The controller may control an on state or an off state of the on / off valve to allow the cold water to flow or stop the flow for each generation of the group residential facility.

The geothermal heating and cooling system for a group residential facility further includes a plurality of generation temperature controllers provided for each generation of the group residence facility, and the control unit is configured to handle the plurality of air based on the control temperature of the plurality of generation temperature controllers. The air volume of the unit can be adjusted.

According to the present invention, the geothermal heat exchanger, the air handling unit and the heat pump unit can be used for geothermal heat for heating and cooling of the collective living facilities, it is possible to change the installation location of the air handling unit in various ways, It is possible to substantially improve the efficiency of the heating and cooling system.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

1 is a schematic diagram of a cooling and heating system for a group residential facility using geothermal heat according to a first embodiment of the present invention, Figure 2 is a schematic diagram of the air handling unit of Figure 1, Figure 3 using the geothermal heat of Figure 1 Schematic diagram showing the control unit of the air conditioning system for group residential facilities, Figure 4 is a schematic diagram showing the heating principle of the air conditioning system for group residential facilities using the geothermal heat of Figure 1, Figure 5 for the group residential facilities using geothermal power of Figure 1 Schematic diagram showing the cooling principle of the cooling and heating system, Figure 6 and Figure 7 is a flow chart showing the heating process of FIG.

Referring to these drawings, the air-conditioning system 10 for collective residential facilities using geothermal heat according to the first embodiment of the present invention (hereinafter, 'cooling and heating system') includes a geothermal heat exchanger 100 that absorbs geothermal heat or discharges heat into the ground. , The central heat pump unit 300, which is connected to the air handling unit 200 and the geothermal heat exchanger 100 and the air handling unit 200 by pipes, respectively, for controlling the indoor temperature of each generation of the collective living facility, Pump unit ').

The geothermal heat exchanger (100) digs a borehole to a certain depth from the ground surface, inserts a U-shaped pipe made of a high-density polyethylene through the borehole, and fills the grouting member between the borehole and the pipe to absorb geothermal heat or absorb heat into the ground. It is a composition that can emit. However, the embodiment of the geothermal heat exchanger 100 in the cooling and heating system 10 of the present embodiment is a matter that can be changed as necessary, and the scope of the present invention is not limited by the embodiment of the geothermal heat exchanger 100.

The heat pump unit 300 transmits a high temperature heat source to a low temperature, or transmits a low temperature heat source to a high temperature, and is connected to the geothermal heat exchanger 100 and the air handling unit 200 by piping to generate generations of collective residential facilities. It is a configuration provided for cooling or heating each generation through the air handling unit 200 is provided.

As shown in FIG. 1, the heat pump unit 300 includes a compressor 310 for compressing a gaseous refrigerant to increase pressure, and a condenser for condensing and liquefying a primary refrigerant R1 delivered from the compressor 310. An expansion valve 330 for lowering the pressure of the liquid primary refrigerant R1 delivered from the condenser 320, and a primary refrigerant R1 for the liquid state transferred from the expansion valve 330. And evaporator 340 to vaporize. In addition, the compressor 310, the condenser 320, the expansion valve 330, and the evaporator 340 are connected to each other through the heat pump unit pipe 350, and the heat pump unit pipe 350 has a first phase conversion occurring. The refrigerant R1 is circulated.

Compressor 310 is a mechanical device for compressing gas to increase pressure. The compressor 310 is a high temperature, low pressure gaseous primary refrigerant R1 delivered from an evaporator 340. ) Is a device to convert.

The condenser 320 is a mechanical device for converting the high temperature and high pressure primary refrigerant R1 sent from the compressor 310 to condensate and converting it into a low temperature and high pressure liquid state primary refrigerant R1. An expansion valve ( An expansion valve 330 is a mechanical device that expands the primary refrigerant R1 in the liquid state at low temperature and high pressure to convert the primary refrigerant R1 in the liquid state at low temperature and low pressure.

The evaporator 340 is a mechanical device that phase-converts the low temperature low pressure liquid primary refrigerant R1 transmitted from the expansion valve 330 to the high temperature low pressure gas primary refrigerant R1. ), The heat transfer process by the condenser 320, the expansion valve 330 and the evaporator 340 will be together in a specific use example of the present invention.

The air handling unit 200 is provided for each generation of the group residential facility and is configured to adjust the indoor temperature of each generation. Hereinafter, the present invention will be described with reference to the air handling unit 200 provided in any one generation N1 of a plurality of households in a group residential facility.

As illustrated in FIG. 2, the air handling unit 200 may include a heat exchanger 210, a mixing unit 220 provided at one side of the heat exchanger 210, and a second side of the heat exchanger 210. Blower 230 is included.

The heat exchanger 210 is provided in the air handling unit 200 to heat or cool the surrounding air through heat transferred from the heat pump unit 300. Adjacent to the heat exchange unit 210 is a generation cold water supply pipe 630 and generation cold water discharge pipe 640 extending from the heat pump unit 300 as described below, the heat exchange unit 210 through this heat pump The unit 300 will exchange with each other.

The mixing unit 220 is provided at one side of the heat exchanger 210 to mix internal air of the air handling unit 200. The mixing unit 220 mixes the air introduced through the suction duct 242 and the air introduced through the external air inlet duct 243 with each other, thereby generating an N1 of any of a plurality of generations of the group residential facility. The quality of the air flowing into each of the chambers R1 to R4 is improved.

The blower 230 is a portion for blowing air heated or cooled through the heat exchanger 210 to the chambers R1 to R4, and includes a fan motor 231 and a fan 232.

The fan motor 231 is for generating wind blown to each chamber (R1 to R4), the fan 232 to transfer the wind generated by the fan motor 231 to the room of each chamber (R1 to R4) will be. The fan motor 231 is determined by the control amount of the control unit 410, the amount of rotation of the wind is transmitted to each generation through the fan 232 is changed accordingly. In addition, an inverter (not shown) may be connected to the fan motor 231 as needed, and the controller 410 may adjust the rotation amount of the fan motor 231 by controlling the inverter (not shown).

The air handling unit 200 comprises a discharge pipe 241 coupled to one side and a suction pipe 242 coupled to the other side to form one large pipe line as a whole, and each chamber of the collective residence facility. Cool air or warm wind is blown at (R1 to R4).

The discharge duct 241 is a type of pipe that is coupled to one side of the air handling unit 200 and blows wind generated through the blower 230 to each chamber R1 to R4, and the suction duct 242. Is a kind of pipe coupled to the other side of the air handling unit 200 to transfer the air sucked from each chamber (R1 to R4) to the air handling unit 200 side. A portion of the discharge duct 241 and the suction duct 242 is disposed to be buried between the ceiling (C) and the wall (W).

An external air inlet duct 243 is provided at one side of the air handling unit 200 adjacent to the mixing unit 220, and an internal air discharge duct 244 is provided at one side of the suction duct 242.

The external air inlet duct 243 is for introducing external air, and the external air introduced through the external air inlet duct 243 is mixed with the air sucked through the suction duct 242, and thus, each chamber R1 to I. It is possible to improve the quality of the wind blown by R4).

The internal air discharge duct 244 is for discharging a part of the air flowing along the suction duct 242 to the outside, and filters the dust existing in the air sucked from each chamber R1 to R4 and then discharges it. By doing so, it is possible to improve the quality of air blown through the chambers R1 to R4.

In addition, one side of the air handling unit 200 is provided with a condensation preventing pipe 250, the condensation preventing pipe 250 is a condensation phenomenon that may occur in the air handling unit 200 during heat exchange through the heat exchange unit 210. prevent.

In the air handling unit 200 of the present embodiment, the ducts 241, 242, 243, and 244 are disposed in the ceiling spaces of the respective generations, and the outlets of the ducts 241, 242, 243 and 244 connected to the inside and the outside are not shown. Only), the ceiling height can be considerably lowered compared to the existing ceiling type indoor units such as multi air conditioners, and can be placed on the veranda of a group residential facility, thus limiting the space limitation of the indoor unit used in the air conditioning system. It can be mitigated.

In addition, the air handling unit 200 of the present embodiment, even without using a separate ventilation unit so that the outside air and the inside air can be discharged through the outside air inlet duct 243 and the inside air exhaust duct 244. This enables indoor air conditioning in a group residential facility without a ventilation unit.

On the other hand, the geothermal heat exchanger 100 and the heat pump unit 300 are interconnected by the geothermal heat supply pipe 500, a plurality of air handling unit 200 provided for each generation of the heat pump unit 300 and the collective residential facilities Are interconnected by the generation temperature control piping (310).

The geothermal heat supply pipe 500 starts from the aggregate geothermal heat supply pipe 510 buried in the ground of the geothermal heat exchanger 100, extends to be adjacent to the condenser 320 of the heat pump unit 300, and is buried in the ground again. Extending to the aggregate geothermal outflow pipe 520 forms a single pipe as a whole. The secondary refrigerant (R2) flows along the geothermal heat supply pipe (500), and the geothermal heat supply pipe (500) transfers geothermal heat to the heat pump unit (300) side through the secondary refrigerant (R2), or the heat pump unit. Heat is received from 300 and released to the ground.

The generation temperature regulating pipe 600 includes a plurality of air handling units 200 branched from the collective cold water supply pipe 610 extending from the heat pump unit 300 and the collective cold water supply pipe 610 and provided for each generation. A plurality of generation cold water supply pipes 630 for delivering cold water to each other, the collective cold water discharge pipe 620 extending from the heat pump unit 300, and the collective cold water discharge pipe 620 to be provided for each generation. Generation cold water discharge pipe 640 through which the cold water flows out from the plurality of air handling units 200, respectively.

The collective cold water supply pipe 610 is started from one side adjacent to the evaporator 340 of the heat pump unit 300 and then extended to each household side to supply cold water to each household through the household cold water supply pipe 630. The collective cold water outlet pipe 620 starts from the other side adjacent to the evaporator 340 of the heat pump unit 300 and then extends to each household side to collect the cold water discharged from each household through the household cold water outlet pipe 640. It is plumbing.

In addition, the generation cold water supply pipe 630 is branched from the collective cold water supply pipe 610 and respectively extended to the air handling unit 200 side of each generation is a pipe for supplying the cold water to the plurality of air handling unit 200, respectively. The generation cold water discharge pipe 640 is a pipe through which the heat exchanged cold water flows out through the air handling unit 200.

Generation temperature control pipe 600, starting from the collective cold water supply pipe 610 and extended to a plurality of generation cold water supply pipe 630 provided for each household, through the air handling unit 200, generation cold water for each household After extending to the outlet pipe 640, and extends to the collective cold water outflow pipe 620 connected to the collective cold water supply pipe 610, as in the geothermal heat supply pipe 500, one large pipe (pipe road) ) Is achieved.

On the other hand, the heating and cooling system 10 according to the present embodiment further includes a floor heating connection pipe 720 branched from the collective cooling water supply pipe 610 and connected to the floor heating system pipe 710 of the collective residence facility.

In general, the group residential facilities are provided with a floor heating system pipe 710 extending for each generation to heat the floor of each generation, floor heating connection pipe 720 is such a floor heating system pipe 710 and the collective cold water supply pipe ( 610 is interconnected.

1, 4 and 5 in the floor heating system pipe 710 is provided for each generation of each floor, floor heating system piping 710 is provided on the upper floor except for the lower floor generation because of the narrow space of the drawing space And the appearance of the floor heating system piping (710) branched by each generation is omitted, and other general matters about the floor heating system piping (710) is the same as that widely applied to the floor heating system of the group residential facilities. Description is omitted.

The flow control valve 820 is provided at the connection point between the collective cold water supply pipe 610 and the floor heating connection pipe 720, and the controller 410 (see FIG. 3) controls the open angle of the flow control valve 820. The flow rate of the cold water flowing in the collective cold water supply pipe 610 and the flow of cold water flowing in the floor heating system pipe 710 are adjusted.

On the other hand, as shown in Figure 1, the cooling and heating system 10 according to the present embodiment, at least one secondary refrigerant circulation pump 810 provided in the geothermal heat supply pipe 500, and the collective cold water supply pipe 610 At least one cold water circulation pump 830, flow meter 850 provided in each generation cold water supply pipe 630, and on-off valves provided in the generation cold water discharge pipe 640, respectively. And a generation temperature controller 870 (see FIG. 3) provided for each generation.

The secondary refrigerant circulation pump 810 and the cold water circulation pump 830 are provided in plural numbers according to the number of generations of the group residential facilities, hereinafter, a plurality of secondary refrigerant circulation pumps 810 and a plurality of cold water circulation pumps 830. It is assumed that the present invention will be described.

The secondary refrigerant circulation pump 810 is a device that circulates the secondary refrigerant R2 along the geothermal heat supply pipe 500, and the pressure of the secondary refrigerant R2 in the ground and the secondary refrigerant R2 on the ground. It also serves to adjust the pressure difference (hereinafter, 'differential pressure'). Although not shown in FIG. 1, an inverter 880 (see FIG. 3) is disposed around the secondary refrigerant circulation pump 810, and the inverter 880 may be a secondary refrigerant circulation pump under the control of the controller 410. By controlling the operation degree of 810, the differential pressure is made constant, and the circulation amount of the secondary refrigerant R2 circulating through the geothermal heat supply pipe 500 is adjusted.

The cold water circulation pump 830 is provided in the collective cold water supply pipe 610 and serves to supply the cold water cooled or heated by the heat pump unit 300 for each generation of the group residential facility. The cold water circulation pump 830 is separately disposed at a position adjacent to the machine room as shown in FIG. 1, but may be disposed inside the machine room if necessary (not shown).

The flow meter 850 is a device for measuring the flow rate of a gas or a liquid. In this embodiment, the flow meter is used to measure the amount of cold water used for each generation. The cold water usage fee for each household is charged according to the measurement value of the flow meter 850.

The on / off valve 860 is for causing the cold water to flow or stop the flow according to the desired temperature set by the occupants of each household. If the temperature is higher than the set temperature, the generation of on-off valve 860 is turned on (on), the cold water flows, and in the opposite case, the on-off valve (860) is turned off (off), the flow of cold water To stop.

The flow meter 850 of the present embodiment is provided in the generation cold water supply pipe 630, but may be provided on the generation cold water discharge pipe 640 instead of the generation cold water supply pipe 630 (not shown), and the on-off valve 860 may be provided in the generation cold water discharge pipe 640 but may be provided in the generation cold water supply pipe 630 instead of the generation cold water discharge pipe 640 (not shown). That is, the positions of the flow meter 850 and the on-off valve 860 may be adjusted as necessary.

The household temperature controller (870, see FIG. 3) detects and displays the current temperature of each household, and allows the resident to set the desired temperature, so that the resident can know the current room temperature through the LCD display screen. And, accordingly, it is provided to set the temperature according to the desired degree of heating and cooling.

On the other hand, as shown in Figure 3, the cooling and heating system 10 according to the present embodiment, the geothermal heat exchanger 100, air handling unit 200, heat pump unit 300, flow control valve 820, 2 It further includes a control unit 410 for controlling the secondary refrigerant circulation pump 810, on-off valve 860, generation temperature controller 870, cold water circulation pump 830 and the inverter 880.

In the present embodiment, the control unit 410 is provided with a direct digital control and distributed processing device (DDC).

The control unit 410 controls the operation degree of the heat pump unit 300 step by step based on the total generation cold water consumption that is the sum of the generation cold water consumption, and correspondingly provided to the secondary refrigerant circulation pump 810 correspondingly. By controlling the inverter 880, the circulation amount of the secondary refrigerant R2 flowing along the geothermal heat supply pipe 500 extending from the geothermal heat exchanger 100 to the heat pump unit 300 is adjusted.

In addition, the controller 410 adjusts the amount of cold water flowing to the air handling unit 200 to a minimum when the difference between the indoor desired temperature and the outdoor temperature of each generation is not large, such as in the mid-term seasons such as spring and autumn. By doing so, the air can be air-conditioned.

That is, the controller 410 of the present embodiment minimizes the operation degree of the heat pump unit 300 when the difference between the indoor desired temperature and the outdoor temperature is not large, and detects the indoor temperature and humidity to provide an air handling unit 200. By converting the outside air and the indoor air of each generation through the air conditioning, to control the indoor air conditioning environment (temperature, humidity and ventilation) of each generation (enthalpy control). Accordingly, the cooling and heating system 10 of the present embodiment has an advantage of substantially improving the energy efficiency of energy used for cooling and heating of group residential facilities in the mid-term season.

In addition, the control unit 410 controls the opening angle of the flow control valve 820 in response to the heating desired temperature for each household, and by turning on or off the on-off valve 860 in response to the heating and cooling desired temperature for each household Block or unblock the flow of cold water.

In addition, the control unit 410 adjusts the operation degree of the cold water circulation pump 830 based on the total generation cold water consumption, which is the sum of the cold water consumption for each household, to control the integrated cold water supply pipe 610 and the collective cold water discharge pipe 620. It adjusts the circulation of the cold water flowing along, checks the current indoor temperature of each household, and adjusts the indoor temperature for each household in response to the desired temperature of the occupants input to the household temperature controller 870.

That is, the control unit 410, in consideration of the degree of desired heating and cooling for each generation to start or stop the operation of the overall air conditioning system 10, geothermal heat exchanger 100 for the operation or shutdown of the air conditioning system 10 ), Heat pump unit 300, flow control valve 820, secondary refrigerant circulation pump 810, on-off valve 860, generation temperature controller 870, cold water circulation pump 830 and inverter 880 To control.

The control unit 410 of the present embodiment includes an expandable input / output module (I / O module), is driven by various protocol-mounted monitoring control software, and can perform various alarm management functions according to installation of operation and monitoring software. It is configured to be.

Now, the air-conditioning principle for each generation by the air conditioning system 10 according to the present embodiment will be described in detail.

First, as shown in Figures 4, 6 and 7, the heating principle of the air conditioning system 10 according to the present embodiment is as follows.

When at least one of the households of the group residential facilities sets the indoor desired temperature through the household temperature controller 870 provided in their home in hope of heating, the set data value is transmitted to the controller 410, The heat pump unit 300 and the geothermal heat exchanger 100 are driven under the control of the controller 410.

In the heat pump unit 300, the primary refrigerant R1 circulates along the heat pump unit pipe 350, and in the geothermal heat exchanger 100, the secondary refrigerant R2 circulates along the geothermal heat supply pipe 500. do. In this case, the control unit 410 determines the number of operation of the secondary refrigerant circulation pump 810 in consideration of the desired degree of heating for each household, and the inverter 880 provided adjacent to the secondary refrigerant circulation pump 810. The secondary refrigerant circulating pump 810 is operated by the number determined by inputting a signal.

As the secondary refrigerant circulation pump 810 operates, heat exchange is performed between the geothermal heat exchanger 100 and the heat pump unit 300, and the controller 410 receives an operation state signal of the heat pump unit 300. When the heat pump unit 300 continues to operate, the secondary refrigerant circulation pump 810 continues to operate, and when the operation of the heat pump unit 300 is stopped, the operation of the secondary refrigerant circulation pump 810 is stopped. Afterwards, the heat pump unit 300 is finally stopped.

On the other hand, the control unit 410 drives the cold water circulation pump 830, the heat pump unit 300 is to transfer heat to the collective cold water supply pipe 610 and the collective cold water discharge pipe 620. Cold water continues to be heated by the heat received from the heat pump unit 300 until it reaches a predetermined set temperature, and when the temperature of the cold water reaches a predetermined set temperature, the heated cold water is the generation cold water supply pipe of each generation that desires heating. 630) to the side.

In addition, the controller 410 adjusts the open angle of the flow control valve 820 to adjust the amount of cold water supplied to the floor heating system pipe 710 and the collective cold water supply pipe 610, respectively.

The cold water supplied to the generation cold water supply pipe 630 of the generation desired to be heated increases the air temperature inside the air handling unit 200, and the air whose temperature is elevated is increased in the fan motor 231 of the blower 230. As it rotates, it is blown into the room via the fan 232.

In addition, the control unit 410 adjusts the on-off valve 860 based on the heating desired temperature set for each household, and if the indoor temperature of any one of the households matches the desired heating temperature of the occupant, the on-off valve 860 is When the room temperature is lower than the desired heating temperature, the on-off valve 860 is kept in the on state.

In addition, the control unit 410 continuously checks the on or off state of the on-off valve 860 for each household, the operation state of the heat pump unit 300 when it is no longer necessary to operate the heat pump unit 300 When the signal is detected and the heat pump unit 300 is not in an operating state, the operation of the heat pump unit 300 is finally stopped.

The heat exchange principle between the geothermal heat exchanger 100 and the heat pump unit 300, the heat pump unit 300 and the air handling unit 200 is as follows.

As the secondary refrigerant circulation pump 810 operates, the secondary refrigerant R2 flows out into the ground through the geothermal heat supply pipe 500 and flows into the heat pump unit 300, and the low temperature low pressure in the heat pump unit 300. The primary refrigerant R1 in the liquid state is converted to the primary refrigerant R1 in the high temperature low pressure gas state while passing through the evaporator 340. The heat absorbed during the phase conversion is geothermally provided adjacent to the evaporator 340. Inflow from the supply pipe (500).

That is, the temperature t1 of the secondary refrigerant R2 flowing into the heat pump unit 300 through the geothermal heat supply pipe 500 is the temperature of the secondary refrigerant R2 flowing out of the heat pump unit 300 ( It is higher than t2) and the heat corresponding to this temperature difference (t1-t2) is absorbed from the ground.

The primary refrigerant R1 of the high temperature and low pressure gas state passing through the evaporator 340 becomes the primary refrigerant R1 of the high temperature and high pressure gas state while passing through the compressor 310, and then again passes through the condenser 320. It becomes the primary refrigerant R1 of a state. In this case, the heat discharged while passing through the condenser 320 is transferred to the cold water flowing along the collective cold water supply pipe 610 and the collective cold water discharge pipe 620 adjacent to the condenser 320, and thus the temperature of the cold water is increased. do.

This high temperature cold water (substantially hot water) is transferred to the air handling unit 200 of each generation to be heated through the generation cold water supply pipe 630, and the heat exchange unit 210 of the air handling unit 200 is transferred. The ambient air is heated, and the heated air is blown to each of the chambers R1 to R4 through the blower 230.

On the other hand, in the case of heating, the control unit 410 adjusts the open angle of the flow rate control valve 820 in consideration of the desired heating temperature of each generation. Since the collective residential facilities are generally provided with a floor heating system pipe 710 extending for each household, the control unit 410 controls the open angle of the flow control valve 820, the collective cold water supply pipe 610 and the floor heating system. By adjusting the amount of cold water flowing through the pipe 710, the degree of floor heating and the degree of blowing of warm air through the air handling unit 200 is adjusted. That is, when the difference between the indoor temperature and the desired heating temperature of each household, such as early autumn, the control unit 410, by opening the flow control valve 820 to the collective cold water supply pipe 610 side to the floor heating degree The degree of blowing of warm air through the air handling unit 200 to be stronger.

Next, referring to Figure 5, the cooling principle of the cooling and heating system 10 according to the present embodiment is as follows. Unlike heating, in the case of cooling, the flow control valve 820 is kept closed, and the geothermal heat exchanger 100, the heat pump unit 300, the secondary refrigerant circulation pump 810, and on / off by the other control unit 410. The matters related to the control of the valve 860, the generation temperature controller 870, the cold water circulation pump 830, and the inverter 880 are the same as in the case of heating, and thus redundant descriptions thereof will be omitted.

If at least one generation of each generation of the group residential facility desires cooling, the controller 410 drives the geothermal heat exchanger 100 and the heat pump unit 300 in consideration of the cooling desired temperature of the household residents. The ground always maintains constant geothermal heat of about 12 ° C. to 15 ° C., and the secondary refrigerant R2 flows out into the ground through the geothermal heat supply pipe 500 and flows into the heat pump unit 300.

In this case, in the heat pump unit 300, the primary refrigerant R1 in the high temperature and high pressure gas state is converted into the primary refrigerant R1 in the low temperature and high pressure liquid state while passing through the condenser 320, and is discharged during phase conversion. The latent heat is convexed toward the geothermal heat supply pipe 500 provided adjacent to the condenser 320, and thus the geothermal heat supply pipe 500 receives latent heat of the primary refrigerant R1 and discharges it to the ground. That is, the temperature t3 of the secondary refrigerant R2 flowing into the heat pump unit 300 through the geothermal heat supply pipe 500 is the temperature of the secondary refrigerant R2 flowing out of the heat pump unit 300 ( It is lower than t4), and heat corresponding to this temperature difference (t4-t3) is released to the ground.

The primary refrigerant R1 of the low temperature and high pressure liquid state passing through the condenser 320 becomes the primary refrigerant R1 of the low temperature low pressure liquid state while passing through the expansion valve 330, and again through the evaporator 340. Phase-converted to the gaseous primary refrigerant R1.

In this case, the cold water flowing along the collective cold water supply pipe 610 and the collective cold water outlet pipe 620 adjacent to the evaporator 340 deprives heat to the heat pump unit pipe 350, and thus the temperature of the cold water decreases. . The cold water having such a low temperature is delivered to the air handling unit 200 of each generation to be cooled through the generation cold water supply pipe 630, and cools the surrounding air through the heat exchange unit 210 of the air handling unit 200. The cooled air is blown to the chambers R1 to R4 through the blower 230.

4 and 5, the positional change of the condenser 320 and the evaporator 340 depends on the change in the flow direction of the primary refrigerant R1, and the primary refrigerant direction control provided on the heat pump unit 300. According to the driving of the valve (not shown), in the case of cooling, the condenser 320 of FIG. 5 functions as the evaporator 340 of FIG. 4, and the evaporator 340 of FIG. 5 functions as the condenser 320 of FIG. 4. do. This is the same as the conventional heat pump, so a detailed description thereof will be omitted.

In addition, when at least one generation of the group residential facility desires heating even in an environment requiring cooling (eg, summer), the flow regulating valve 820 is kept closed, but the floor provided in the household which desires heating. A separate hot water flows into the heating system pipe 710, thereby heating the floor of the generation in which the heating is desired. The method of flowing hot water along the floor heating system pipe 710 of a generation that is desired to be heated does not significantly differ from the contents of a general floor heating system applied to a conventional group residential facility, and thus a detailed description thereof will be omitted.

The cooling and heating system 10 according to the present embodiment may use geothermal heat for heating and cooling of a group residential facility, and may efficiently manage the cooling and heating system of the group residential facility by the central heat pump unit 300 provided in the machine room. It becomes possible.

In addition, the cooling and heating system 10 according to the present embodiment can not only change the installation position of the air handling unit 200 in various ways, but also substantially improve the efficiency of the cooling and heating system of the collective residence facility.

8 is a schematic diagram of a cooling system for a group residential facility using geothermal heat according to the second embodiment of the present invention, and FIG. 9 is a schematic diagram illustrating a control unit of a cooling system for a group residential facility using geothermal heat of FIG. 8. 10 is a schematic diagram showing the heating principle of the air conditioning system for group residential facilities using geothermal energy of FIG. 8, FIG. 11 is a schematic diagram showing the cooling principle of air conditioning system for group residential facilities using geothermal power of FIG. 13 is a flowchart illustrating a heating process of FIG. 10. Hereinafter, the same reference number means the same member, and overlapping description is omitted.

Referring to these drawings, the air-conditioning system 20 for collective residential facilities using geothermal heat according to the second embodiment of the present invention (hereinafter, 'cooling and heating system') includes a geothermal heat exchanger 100 which absorbs geothermal heat or discharges heat into the ground. , The individual heat pump unit 300, which is connected to the air handling unit 200 for controlling the indoor temperature of each generation of the collective living facility, and the geothermal heat exchanger 100 and the air handling unit 200 by pipes, respectively. Pump unit ').

The geothermal heat exchanger (100) is a structure capable of absorbing geothermal heat or dissipating heat into the ground, and the heat pump unit 300 transmits a high temperature heat source to a low temperature or transmits a low temperature heat source to a high temperature. The air handling unit 200 provided for each generation of the facility is configured for each generation to cool or heat each generation.

The heat pump unit 300 is a compressor 310 for compressing a gaseous refrigerant to increase the pressure, a condenser 320 for condensing and liquefying the refrigerant delivered from the compressor 310, and the condenser 320 An expansion valve 330 for lowering the pressure of the liquid refrigerant, and an evaporator 340 for vaporizing the liquid refrigerant delivered from the expansion valve 330.

On the other hand, since the air handling unit 200 of the present embodiment is substantially the same configuration as the air handling unit 200 of the air-conditioning system 10 for a group residential facility using geothermal heat according to the first embodiment of the present invention described above, Reference is made to the description in the first embodiment and will be briefly described herein. Air handling unit 200 is provided for each generation of the group residential facility is configured to adjust the indoor temperature of each generation. The air handling unit 200 includes a heat exchanger 210, a mixing unit 220 provided on one side of the heat exchanger 210, and a blower 230 provided on the other side of the heat exchanger 210. .

The heat exchanger 210 is provided in the air handling unit 200 to heat or cool the surrounding air through the heat transferred from the heat pump unit 300, and the mixing unit 220 is a heat exchanger 210. Is provided on one side of the air mixing unit 200 to mix the internal air, the blower 230 is a portion for blowing air heated or cooled through the heat exchange unit 210 to each chamber (R1 to R4) to be.

The blower 230 includes a fan motor 231 for generating wind blown into the indoors of each generation, and a fan 232 for transferring the wind generated by the fan motor 231 to each chamber. The fan motor 231 is determined by the control amount of the control unit 410, the amount of rotation of the wind is transmitted to each generation through the fan 232 is changed accordingly. In addition, an inverter (not shown) may be connected to the fan motor 231 as needed, and the controller 420 may control the rotation amount of the fan motor 231 by controlling the inverter (not shown).

The air handling unit 200 forms a single large pipeline through the discharge duct 241 coupled to one side and the suction duct 242 coupled to the other side. Blowing cold or warm wind with R1 to R4). A portion of the discharge duct 241 and the suction duct 242 is disposed to be buried between the ceiling (C) and the wall (W).

In addition, an external air inlet duct 243 is provided at one side of the air handling unit 200 adjacent to the mixing unit 220, and an internal air discharge duct 244 is provided at one side of the suction duct 242. In addition, one side of the air handling unit 200 is provided with a condensation preventing pipe 250, the condensation preventing pipe 250 is a condensation phenomenon that may occur in the air handling unit 200 during heat exchange through the heat exchange unit 210. prevent.

In the air handling unit 200 of the present embodiment, the ducts 241, 242, 243, and 244 are disposed in the ceiling spaces of the respective generations, and the outlets of the ducts 241, 242, 243 and 244 connected to the inside and the outside are not shown. Only), the ceiling height can be considerably lowered compared to the existing ceiling type indoor units such as multi air conditioners, and can be placed on the veranda of a group residential facility, thus limiting the space limitation of the indoor unit used in the air conditioning system. It can be mitigated.

In addition, the air handling unit 200 of the present embodiment, even without using a separate ventilation unit so that the outside air and the inside air can be discharged through the outside air inlet duct 243 and the inside air exhaust duct 244. This enables indoor air conditioning in a group residential facility without a ventilation unit.

Meanwhile, as shown in FIG. 8, the geothermal heat exchanger 100 and the heat pump unit 300 are connected to each other by the geothermal heat supply pipe 500.

The geothermal heat supply pipe 500 includes a plurality of generation geothermal heat supply pipes branched from the integrated geothermal heat supply pipe 510 and the integrated geothermal heat discharge pipe 520 and the aggregate geothermal heat supply pipe 510 extending from the geothermal heat exchanger 100 ( 530 and a plurality of generation geothermal outflow pipes 540 branching from the aggregate geothermal outflow pipe 520.

Geothermal heat supply pipe 500, starting from the collective geothermal heat supply pipe 510, through a plurality of generation geothermal heat supply pipe 530 each branched to a plurality of heat pump unit 300, a plurality of generation geothermal heat pipes 540 ) Extends to the aggregate geothermal outflow pipe 520, which collects a plurality of generation geothermal outflow pipes 540, thereby forming a single large pipeline.

The secondary refrigerant R2 delivered from the collective geothermal heat supply pipe 510 flows into the generation geothermal heat supply pipe 530 connected to the heat pump unit 300 of a generation for cooling or heating, and the heat pump unit 300. After passing through the temperature rises or falls and then circulated back to the generation geothermal heat discharge pipe 540, and finally through the collective geothermal heat discharge pipe 520 to release heat to the ground or to absorb heat from the ground.

On the other hand, as shown in Figure 8, the heat pump unit 300 and the plurality of air handling unit 200 are each connected by a plurality of generation temperature control pipe 600, respectively.

The plurality of generation temperature control pipes 600 each include a generation cold water supply pipe 630 for supplying cold water to the air handling unit 200, and a generation cold water discharge pipe 640 through which cold water flows from the air handling unit 200. It includes.

The generation cold water supply pipe 630 and the generation cold water discharge pipe 640 form one pipeline and are provided for each generation, and are disposed adjacent to the evaporator 340 and connected to the heat pump unit 300. .

On the other hand, as shown in Figure 8, the heating and heating system 20 according to the present embodiment, branch heating connection pipe connected to the floor heating system piping 710 of the collective residential facilities branched from the generation cold water supply pipe 630. 720 is further included.

In general, the group residential facilities are provided with a floor heating system piping (710) for heating the floor of each generation extended by generation, floor heating connection pipe 720 is such a floor heating system piping (710) and household cold water supply pipe ( 630).

8, 10, and 11, the floor heating system piping 710 is provided for each generation of each floor, and the floor heating system piping 710 provided in the upper floor except for the lower floor generation due to the narrow space of the drawing space. And the appearance of the floor heating system piping 710 branched by each generation is omitted, and other general matters about the floor heating system piping 710 is the same as the content widely applied to the floor heating system, so a detailed description thereof will be omitted. .

The flow control valve 820 is provided at the connection point of the generation cold water supply pipe 630 and the floor heating connection pipe 720, and the cold water flowing in the generation cold water supply pipe 630 according to the open angle of the flow control valve 820. And the flow rate of the cold water flowing in the floor heating system pipe 710 is adjusted.

On the other hand, as shown in Figure 8, the cooling and heating system 20 according to the present embodiment, at least one secondary refrigerant circulation pump 810 provided in the collective geothermal heat supply pipe 510, and the generation geothermal heat of each generation Secondary refrigerant control valve 840, respectively provided in the supply pipe 530, flow meter 850, respectively provided in the generation cold water supply pipe 630 of each generation, and generation cold water outflow pipe 640 of each generation On and off valves 860, respectively provided in the, and further comprises a generation temperature controller 870 (see Fig. 9) provided for each generation.

The secondary refrigerant circulation pump 810 will be provided in plurality according to the number of generations of the residential facilities, the following will be described on the assumption that a plurality of secondary refrigerant circulation pump 810 is provided.

The secondary refrigerant circulation pump 810 is a device for circulating the secondary refrigerant R2 along the geothermal heat supply pipe 500. Although not shown, a separate differential pressure valve (not shown) is provided between the geothermal heat exchanger 100 and the secondary refrigerant circulating pump 810 so that the pressure of the secondary refrigerant R2 in the ground and the secondary refrigerant in the ground ( The difference in pressure (differential pressure) of R2) is adjusted.

In addition, although not shown in FIG. 8, an inverter 880 is disposed around the secondary refrigerant circulation pump 810, and the inverter 880 may be a secondary refrigerant circulation pump 810 under the control of the controller 600. The amount of circulation of the secondary refrigerant R2 circulating in the geothermal heat supply pipe 500 is controlled by controlling the degree of operation of the secondary heat supply pipe 500.

The secondary refrigerant control valve 840 is provided in each generation geothermal heat supply pipe 530 of each generation to adjust the circulation amount of the secondary refrigerant R2 delivered to the heat pump unit 300 for each generation. That is, the secondary refrigerant circulation pump 810, the total amount of the secondary refrigerant (R2) flowing into the heat pump unit 300 through the collective geothermal heat supply pipe 510 in consideration of the cold water consumption of all generations of the collective residential facilities. The secondary refrigerant control valve 840 controls the amount of secondary refrigerant (R2) to be circulated by generation through the generation geothermal heat supply pipe 530 branching from the aggregate geothermal heat supply pipe 510. Device.

The control unit 420 controls both the secondary refrigerant circulation pump 810 and the secondary refrigerant control valve 840 so that the total amount of the secondary refrigerant R2 to be circulated as a whole and the secondary refrigerant to be circulated by generations. Individual amounts of (R2) will be adjusted.

The flow meter 850 is an instrument for measuring the flow rate of the gas or liquid, and in the present embodiment, to measure the amount of cold water used for each generation. The cold water usage fee for each household is charged according to the measurement value of the flow meter 850.

The on-off valve 860 is for causing the cold water to flow or stop the flow for each household according to the desired temperature set by the residents of each household, when the residents want to cool down to lower the set temperature, the room temperature is higher than the set temperature If high, the generation of the on-off valve 860 is turned on (on), the cold water flows, and in the opposite case, the on-off valve 860 is turned off (off) to stop the flow of cold water.

However, the flow meter 850 of the present embodiment is provided in the generation cold water supply pipe 630, but may be provided on the generation cold water discharge pipe 640 instead of the generation cold water supply pipe 630 (not shown). The off valve 860 is provided in the generation cold water discharge pipe 640, but may be provided in the generation cold water supply pipe 630 instead of the generation cold water discharge pipe 640 (not shown).

The household temperature controller 870 detects and displays the current temperature of each household, and allows the resident to set a desired temperature, thereby allowing the resident to know the current indoor temperature through the LCD display screen. It is prepared to set the temperature according to the desired degree.

On the other hand, as shown in Figure 9, the cooling and heating system 20 according to this embodiment, the geothermal heat exchanger 100, air handling unit 200, heat pump unit 300, flow control valve 820, 2 The control unit 420 further controls the secondary refrigerant circulation pump 810, the on-off valve 860, the generation temperature controller 870, the secondary refrigerant control valve 840, and the inverters 880, 570. .

In the present embodiment, the control unit 420 is provided with a direct digital control and distributed processing device (DDC).

The controller 420 controls the operation degree of the heat pump unit 300 step by step based on the amount of cold water used by generation, and based on this, the inverter 880 provided adjacent to the secondary refrigerant circulation pump 810. By controlling the, the circulation amount of the secondary refrigerant (R2) flowing in the aggregate geothermal heat supply pipe 510 extending from the geothermal heat exchanger 100 to the heat pump unit 300 is adjusted.

In addition, the controller 420 may adjust the amount of cold water flowing in the air handling unit 200 to a minimum when the difference between the indoor desired temperature and the outdoor temperature of each generation is not large, such as in the mid-term season such as spring and autumn. By doing so, the air can be air-conditioned.

That is, the control unit 420 of the present embodiment minimizes the operation degree of the heat pump unit 300 when the difference between the indoor desired temperature and the outdoor temperature is not large, and detects the indoor temperature and humidity to provide an air handling unit 200. By replacing the outside air and the indoor air of each generation through the, it is to control the indoor air conditioning environment (temperature, humidity and ventilation) of each generation (enthalpy control). Accordingly, the cooling and heating system 20 of the present embodiment has an advantage of substantially improving the energy efficiency of energy used for heating and cooling of group residential facilities in the mid-term season.

In addition, the control unit 420 controls the opening angle of the flow control valve 820 in response to the desired heating and cooling temperature for each generation, by turning on or off the on-off valve 860 in response to the desired heating and cooling temperature for each generation Block or unblock the flow of cold water from generation to generation.

In addition, the controller 420 controls the secondary refrigerant control valve 840 provided for each household to adjust the circulation amount of the second refrigerant R1 for each household, checks the current indoor temperature of each household, and controls the household temperature controller ( In response to the desired temperature of the occupant inputted to 870, the indoor temperature of each household is adjusted.

That is, the control unit 420, in consideration of the degree of desired heating and cooling for each generation to start or stop the operation of the overall air conditioning system 20, geothermal heat exchanger 100 for the operation or shutdown of the air conditioning system 20 ), Heat pump unit 300, flow control valve 820, secondary refrigerant circulation pump 810, on-off valve 860, generation temperature controller 870, secondary refrigerant control valve 840 and inverter ( 880).

The control unit 420 of the present embodiment includes an expandable input / output module (I / O module), is driven by various protocol-mounted monitoring control software, and can perform various alarm management functions according to the installation of operation and monitoring software. It is configured to be.

Now, the air-conditioning principle for each generation by the air conditioning system 20 according to the present embodiment will be described in detail.

First, as shown in Figures 10, 12 and 13, the heating principle of the air conditioning system 20 according to the present embodiment is as follows.

When at least one of the households of the group residential facilities desires heating and sets the indoor desired temperature through the household temperature controller 870 provided in their home, the set data value is transmitted to the controller 420. The heat pump unit 300 and the geothermal heat exchanger 100 are driven under the control of the controller 420.

In the heat pump unit 300, the primary refrigerant R1 circulates along the heat pump unit pipe 350, and in the geothermal heat exchanger 100, the secondary refrigerant R2 circulates along the geothermal heat supply pipe 500. do.

In this case, the controller 420 determines the number of operation of the secondary refrigerant circulation pump 810 in consideration of all the desired degree of heating for each household, and the inverter 880 provided adjacent to the secondary refrigerant circulation pump 810. The secondary refrigerant circulating pump 810 is operated by the number determined by inputting a signal.

In addition, the control unit 420 controls the secondary refrigerant control valve 840 to supply the secondary refrigerant (R2) through the generation geothermal heat supply pipe 530 only to the generation that wants to heat, accordingly the generation desired to heat Heat exchange between the heat pump unit 300 and the generation geothermal heat supply pipe 530 and generation geothermal heat discharge pipe 540 are mutually.

Subsequently, the control unit 420 receives the operation state signal of the heat pump unit 300, and if the heat pump unit 300 continues to operate, continuously operates the secondary refrigerant circulation pump 810 and operates the secondary refrigerant control valve ( 840 continues to be kept on, and when the operation of the heat pump unit 300 is stopped, the operation of the heat pump unit 300 is finally stopped and the secondary refrigerant control valve 840 is turned off.

 In addition, the heat pump unit 300 transmits heat to the generation temperature control valve 600 for each generation according to the circulation of the primary refrigerant (R1). Cold water continues to be heated by the heat received from the heat pump unit 300 until it reaches a predetermined set temperature, and when the temperature of the cold water reaches a predetermined set temperature, the heated cold water is the generation cold water supply pipe of each generation that desires heating. 630) to the side.

In addition, the controller 420 adjusts the open angle of the flow control valve 820 to adjust the amount of cold water supplied to the floor heating system pipe 710 and the generation cold water supply pipe 630, respectively.

The cold water supplied to the generation cold water supply pipe 630 of the generation desired to be heated increases the air temperature inside the air handling unit 200, and the air whose temperature is increased is the fan 232 according to the rotation of the fan motor 231. Through the air).

In addition, the controller 420 adjusts the on-off valve 860 based on the heating desired temperature set for each household, and when the indoor temperature of any one household matches the heating desired temperature of the occupant, the on-off valve 860 is When the room temperature is lower than the desired heating temperature, the on-off valve 860 is kept in the on state.

In addition, the control unit 420 continuously checks the on or off state of the on-off valve 860 for each household, and the on-off valve 860 is in an off state, and thus it is no longer necessary to operate the heat pump unit 300. If not, the operation state signal of the heat pump unit 300 is detected, and if it is not the operation state, the operation of the heat pump unit 300 is finally stopped and the secondary refrigerant control valve 840 is turned off.

The heat exchange principle between the geothermal heat exchanger 100 and the heat pump unit 300, the heat pump unit 300 and the generation temperature control piping 600 is as follows.

The secondary refrigerant R2 flows out into the ground through the geothermal heat supply pipe 500 according to the operation of the secondary refrigerant circulation pump 810 and flows into the heat pump unit 300, and at the low temperature of the heat pump unit 300. The primary refrigerant R1 in the low pressure liquid state is converted to the primary refrigerant R1 in the high temperature low pressure gas state while passing through the evaporator 340. The heat absorbed during the phase conversion is provided adjacent to the evaporator 340. Generation geothermal heat supply pipe 530 is introduced.

That is, the temperature t5 of the secondary refrigerant R2 flowing into the heat pump unit 300 through the generation geothermal heat supply pipe 530 is the temperature of the secondary refrigerant R2 flowing out of the heat pump unit 300. It is higher than (t6) and the heat corresponding to this temperature difference (t5-t6) is absorbed from the ground.

The primary refrigerant R1 of the high temperature and low pressure gas state passing through the evaporator 340 becomes the primary refrigerant R1 of the high temperature and high pressure gas state while passing through the compressor 310, and then again passes through the condenser 320. It becomes the primary refrigerant R1 of a state. In this case, the heat discharged while passing through the condenser 320 is transferred to the cold water flowing along the generation temperature control pipe 600 adjacent to the condenser 320, thereby increasing the temperature of the cold water.

This high temperature cold water (substantially hot water) is delivered to the air handling unit 200 of each generation that wants to heat, it is to blow a high temperature warm wind in accordance with the driving of the fan motor 231.

On the other hand, in the case of heating, the control unit 420 adjusts the open angle of the flow control valve 820 in consideration of the desired heating temperature of each generation. Since the collective residential facilities are generally provided with a floor heating system piping 710 extending for each household, the control unit 420 controls the open angle of the flow control valve 820, the generation cold water supply pipe 630 and the floor heating. By adjusting the amount of cold water flowing in the system pipe 710, the degree of floor heating and the degree of blowing of warm wind through the air handling unit 200 is adjusted.

That is, when the difference between the room temperature and the heating desired temperature of each householder, such as early autumn, is not large, the control unit 420 opens the flow control valve 820 to the generation cold water supply pipe 630 so that the floor heating degree is increased. Compared with the air handling unit 200 to increase the blowing degree of warm wind.

Next, referring to Figure 11, the cooling principle of the air conditioning system 20 according to the present embodiment is as follows. Unlike heating, in the case of cooling, the flow control valve 820 is kept closed, and the geothermal heat exchanger 100, the heat pump unit 300, the secondary refrigerant circulation pump 810, and on / off by the other control unit 420. The matters related to the control of the valve 860, the generation temperature controller 870, the secondary refrigerant control valve 840, and the inverter 880 are the same as in the case of heating, and thus redundant descriptions thereof will be omitted.

If at least one of the households of the group residential facility desires cooling, the control unit 420 drives the geothermal heat exchanger 100 and the heat pump unit 300 in consideration of the cooling desired temperature of the household residents. The ground always maintains constant geothermal heat of about 12 ° C. to 15 ° C., and the secondary refrigerant R2 flows out into the ground through the geothermal heat supply pipe 500 and flows into the heat pump unit 300.

In this case, in the heat pump unit 300, the primary refrigerant R1 in the high temperature and high pressure gas state is converted into the primary refrigerant R1 in the low temperature and high pressure liquid state while passing through the condenser 320, and is discharged during phase conversion. The latent heat is convexed toward the geothermal heat supply pipe 500 provided adjacent to the condenser 320, and thus the geothermal heat supply pipe 500 receives latent heat of the primary refrigerant R1 and discharges it to the ground. That is, the temperature t7 of the secondary refrigerant R2 flowing into the heat pump unit 300 through the geothermal heat supply pipe 500 is the temperature of the secondary refrigerant R2 flowing out of the heat pump unit 300 ( Lower than t8), heat corresponding to this temperature difference (t7-t8) is released to the ground.

The primary refrigerant R1 of the low temperature and high pressure liquid state passing through the condenser 320 becomes the primary refrigerant R1 of the low temperature low pressure liquid state while passing through the expansion valve 330, and again through the evaporator 340. Phase-converted to the gaseous primary refrigerant R1.

In this case, the cold water flowing along the generation cold water supply pipe 630 and the generation cold water discharge pipe 640 adjacent to the evaporator 340 deprives heat to the heat pump unit pipe 350, and thus the temperature of the cold water decreases. . The cold water having such a low temperature is delivered to the air handling unit 200 of each generation to be cooled, and blows a cold wind having a low temperature according to the driving of the fan motor 231.

10 and 11, the change in the position of the condenser 320 and the evaporator 340 depends on the change in the flow direction of the primary refrigerant R1, and the primary refrigerant direction control provided on the heat pump unit 300. According to the driving of the valve (not shown), in the case of cooling, the condenser 320 of FIG. 10 functions as the evaporator 340 of FIG. 11, and the evaporator 340 of FIG. 10 functions as the condenser 320 of FIG. 11. . This is the same as the conventional heat pump, so a detailed description thereof will be omitted.

However, when at least one generation of the group residential facility desires heating even in an environment requiring cooling (eg, summer), the flow regulating valve 820 is kept closed, but the floor provided in the household which desires heating. A separate hot water flows into the heating system pipe 710, thereby heating the floor of the generation in which the heating is desired. The method of flowing hot water along the floor heating system pipe 710 of a generation that is desired to be heated does not significantly differ from the contents of a general floor heating system applied to a conventional group residential facility, and thus a detailed description thereof will be omitted.

The cooling and heating system 20 according to the present embodiment may use geothermal heat for heating and cooling of a group residential facility, and is efficiently managed by each generation of the heating and cooling system of the group residential facility by an individual heat pump unit 300 provided for each household. You can do it.

In addition, the air conditioning system 20 according to the present embodiment may not only change the installation position of the air handling unit 200 in various ways, but also substantially improve the efficiency of the air conditioning system of the collective residence.

While specific embodiments of the invention have been described and illustrated above, it is to be understood that the invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the invention. It is self-evident to those who have. Therefore, such modifications or variations are not to be understood individually from the technical spirit or point of view of the present invention, the modified embodiments will belong to the claims of the present invention.

1 is a schematic diagram of a cooling and heating system for a group residential facility using geothermal heat according to the first embodiment of the present invention.

FIG. 2 is a schematic diagram of the air handling unit of FIG. 1.

Figure 3 is a schematic diagram showing a control unit of the heating and cooling system for a group residential facility using the geothermal heat of FIG.

Figure 4 is a schematic diagram showing the heating principle of the heating and cooling system for a group residential facilities using the geothermal heat of FIG.

Figure 5 is a schematic diagram showing the cooling principle of the air-conditioning system for group residential facilities using the geothermal heat of FIG.

6 and 7 are flowcharts illustrating a heating process of FIG. 4.

8 is a schematic diagram of a heating and cooling system for a group residential facility using geothermal heat according to the second embodiment of the present invention.

FIG. 9 is a schematic diagram illustrating a control unit of a heating and cooling system for a group residential facility using geothermal heat of FIG. 8.

FIG. 10 is a schematic diagram illustrating a heating principle of an air conditioning system for a group residential facility using geothermal heat of FIG. 8.

FIG. 11 is a schematic diagram illustrating a cooling principle of an air conditioning system for a group residential facility using geothermal heat of FIG. 8.

12 and 13 are flowcharts illustrating a heating process of FIG. 10.

* Description of the symbols for the main parts of the drawings *

10, 20: air conditioning system for group residential facilities 100: geothermal heat exchanger

200: air handling unit 210: heat exchanger

220: mixing section 230: blowing section

241: discharge duct 242: suction duct

243: outside air inlet duct 244: inside air exhaust duct

300: heat pump unit 410, 420: control unit

500: geothermal heat supply pipe 600: household temperature control piping

710: floor heating system piping 720: floor heating connection piping

810: secondary refrigerant circulation pump 820: flow control valve

830: cold water circulation pump 840: secondary refrigerant control valve

850: flow meter 860: on-off valve

870: generation temperature controller 880: inverter

Claims (35)

A geothermal heat exchanger that absorbs geothermal heat or releases heat to the ground; A plurality of air handling units provided for each generation of the group residential facilities and disposed in each generation to adjust the indoor temperature of each generation; A central heat pump unit connected to the geothermal heat exchanger and the plurality of air handling units by a pipe and configured to transmit a high temperature heat source to a low temperature or to transmit a low temperature heat source to a high temperature, but provided in a machine room for cooling and heating a collective residence facility; And It includes a control unit for controlling the operation degree of the central heat pump unit, The pipe is, A geothermal heat supply pipe provided between the geothermal heat exchanger and the central heat pump unit to mutually exchange heat through a secondary refrigerant; And And a generation temperature regulating pipe provided between the central heat pump unit and the air handling unit to exchange heat with each other through cold water. The generation temperature control piping, Collected cold water supply pipe extending from one side of the central heat pump unit; A plurality of generation cold water supply pipes branched from the collective cold water supply pipes to supply the cold water to the plurality of air handling units, respectively; An aggregate cold water discharge pipe extending from the other side of the central heat pump unit; And And a plurality of generation cold water outflow pipes branched from the collective cold water outflow pipes and each of the cold water flows out from the plurality of air handling units. The method of claim 1, The air handling unit, A heat exchanger for heating or cooling ambient air through heat exchange with the heat pump unit; And It is provided on one side of the heat exchange unit air-conditioning heating system for a group residential facility using a geothermal heat, characterized in that it comprises a blower for blowing air heated or cooled through the heat exchanger to each room for each generation. The method of claim 2, The air handling unit, Provided on the other side of the heat exchange unit, the air-conditioning system for a group residential facilities using geothermal heat characterized in that it further comprises a mixing unit for mixing the air inside the air handling unit. The method of claim 3, A discharge duct coupled to one side of the air handling unit to transfer wind generated through the blower to each chamber for each generation; A suction duct coupled to the other side of the air handling unit to transfer air sucked from each chamber for each generation to the plurality of air handling units; And And an external air inlet duct coupled to the air handling unit so as to be adjacent to the mixing unit to transfer external air to the air handling unit side. The method of claim 4, wherein And an internal air discharge duct coupled to one side of the suction duct to discharge a portion of the air circulated along the suction duct to the outside. The method of claim 4, wherein A portion of the discharge duct and a portion of the suction duct are respectively disposed between the ceiling of any one of the plurality of floors of the collective living facilities and the bottom wall of the upper floor of the one floor. Air conditioning system for facility. delete delete delete delete The method of claim 1, And at least one secondary refrigerant circulation pump disposed in the geothermal heat supply pipe to circulate the secondary refrigerant. The method of claim 11, The control unit, An air conditioning system for a group residential facility using geothermal heat, characterized in that for controlling the degree of operation of the secondary refrigerant circulating pump based on the circulation amount of the secondary refrigerant according to the total generation cold water consumption of the group residential facility. delete The method of claim 1, And a floor heating connection pipe branched from the collective cooling water supply pipe and connected to the floor heating system pipe. The method of claim 14, And a flow rate control valve provided at a connection point between the collective cold water supply pipe and the floor heating connection pipe to control an amount of the cold water flowing through the collective cold water supply pipe. The method of claim 15, The control unit, A geothermal heating and cooling system for a group residential facility, characterized in that for controlling the open angle of the flow control valve based on the total generation of cold water consumption of the group residential facility. The method of claim 1, And at least one cold water circulation pump provided in the integrated cold water supply pipe to circulate the cold water. The method of claim 17, The control unit, And cooling the circulation of the cold water by controlling the operation degree of the cold water circulation pump based on the total generation cold water consumption of the group residential facilities. A geothermal heat exchanger that absorbs geothermal heat or releases heat to the ground; A plurality of air handling units provided for each generation of the group residential facilities and disposed in each generation to adjust the indoor temperature of each generation; A plurality of individual heat pump units connected to the geothermal heat exchanger and the plurality of air handling units by a pipe and transferring a high temperature heat source to a low temperature or a low temperature heat source to a high temperature, but provided for each generation of a group residential facility; And It includes a control unit for controlling the operation of the plurality of individual heat pump unit, The pipe is, A geothermal heat supply pipe provided between the geothermal heat exchanger and the plurality of individual heat pump units to exchange heat with each other through a secondary refrigerant; And And a plurality of generation temperature regulating pipes provided between the plurality of individual heat pump units and the plurality of air handling units to exchange heat with each other through cold water. The geothermal heat supply pipe, An aggregate geothermal heat supply pipe extending from the geothermal heat exchanger; A plurality of generation geothermal heat supply pipes branched from the aggregate geothermal heat supply pipes and respectively supplying the secondary refrigerant to the plurality of individual heat pump units; An aggregated geothermal outflow pipe extending from the geothermal heat exchanger; And And a plurality of generation geothermal effluent pipes branched from the aggregate geothermal effluent pipe and each secondary refrigerant flows out of the plurality of individual heat pump units. delete delete delete delete The method of claim 19, And at least one secondary refrigerant circulation pump provided in the integrated geothermal heat supply pipe for circulating the secondary refrigerant. The method of claim 24, The control unit, An air conditioning system for a group residential facility using geothermal heat, characterized in that for controlling the degree of operation of the secondary refrigerant circulating pump based on the circulation amount of the secondary refrigerant according to the total generation cold water consumption of the group residential facility. The method of claim 19, And a secondary refrigerant control valve respectively provided in the plurality of generation geothermal heat supply pipes. The method of claim 26, The control unit, Heating and cooling system for a group residential facility using geothermal heat, characterized in that for controlling the secondary refrigerant control valve to control the circulation of the secondary refrigerant for each generation. The method of claim 19, The plurality of generation temperature control piping, respectively, A plurality of generation cold water supply pipes respectively supplying the cold water to the plurality of air handling units; And And a plurality of generation cold water outlet pipes through which the cold water flows out from the air handling unit, respectively. The method of claim 28, And a plurality of floor heating connection pipes branched from the plurality of generation cold water supply pipes and connected to the floor heating system pipes. The method of claim 29, Geothermal heat characterized in that it further comprises a plurality of flow rate control valves respectively provided at the connection points of the plurality of generation cold water supply pipe and the plurality of floor heating connection pipe to control the amount of cold water flowing in the generation cold water supply pipe. Heating and cooling system for group residential facilities. The method of claim 30, The control unit, A district heating and cooling system for a group residential facility using geothermal heat, characterized in that for controlling the open angle of the plurality of flow control valves, respectively, based on the generation of cold water by generation of the group residential facility. The method of claim 1 or 28, And a plurality of flow meters provided in each of the plurality of household cold water supply pipes to measure the usage of the cold water for each household. The method of claim 1 or 28, And an on / off valve provided on each of the plurality of generation cold water discharge pipes to allow the cold water to flow or stop the flow. The method of claim 33, wherein The control unit, Heating and cooling system for a group residential facility using geothermal heat, characterized in that for controlling the on or off state of the on-off valve to flow or stop the flow of cold water for each generation of the group residential facilities. The method of claim 1 or 19, It further comprises a plurality of household temperature controllers are provided for each generation of group residential facilities, The control unit, Heating and cooling system for a group residential facility using geothermal heat, characterized in that for adjusting the air flow of the plurality of air handling unit based on the control temperature of the plurality of generation temperature controller.

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