KR20120021778A - Heat pump and control method of the same - Google Patents

Abstract

PURPOSE: A heat pump having a boiler and a control method thereof are provided to offer a efficient heating or water-heating function to users by using a boiler when indoor temperature is lower than a pre-set temperature. CONSTITUTION: A heat pump(1000) comprises an outdoor unit, a hydro unit(H), a boiler(700), a heat-radiating heating unit(600), and a control unit. The outdoor unit compresses refrigerants. The hydro unit heat exchanges the compressed refrigerants and water. The boiler heats water circulating the hydro unit or supplied from a waterworks. The heat-radiating heating unit proceeds heating by heated water in the hydro unit or boiler. The control unit controls the outdoor unit, the hydro unit, and the boiler according to an electricity charge by quantity of heat or indoor temperature.

Description

Heat Pump and Control Method of Heat Pump {HEAT PUMP AND CONTROL METHOD OF THE SAME}

The present invention relates to a heat pump and a method of controlling the heat pump, and more particularly, the present invention relates to a heat pump having a boiler and a method of controlling the heat pump.

In general, a heat pump refers to a cooling and heating device that transfers a low temperature heat source to a high temperature or a high temperature heat source to a low temperature by using heat of a refrigerant or heat of condensation.

The heat pump may include an outdoor unit including a compressor and an outdoor heat exchanger, and an indoor unit including an expansion valve and an indoor heat exchanger.

When heat pumps are used for heating or hot water supply, the use of fossil fuels can be replaced. However, when the heat pump is used as a heat source of heating or hot water supply, when the temperature of outdoor air is lowered, the heating efficiency is drastically lowered or sufficient heating or hot water supply operation cannot be provided.

Therefore, sufficient heating or hot water supply may not be provided only by a heat pump.

When the heat pump and the boiler are used together for heating or hot water supply, a method of minimizing the total cost for heating or hot water supply is required when the electric charge or gas charge per unit calorie fluctuates.

The present invention is to provide a control method of a heat pump and a heat pump having a boiler, selectively operating in conjunction with the boiler in accordance with the outdoor temperature or electric charge per unit calories, and can provide heat radiation heating or hot water operation. We assume problem to do.

In order to solve the above problems, the present invention is an outdoor unit for compressing a refrigerant, a hydro unit for heat exchange between the compressed refrigerant and water, a boiler for selectively heating the water circulating the hydro unit, in the hydro unit or the boiler It provides a heat pump comprising a control unit for controlling the outdoor unit, the hydro unit and the boiler according to the heat radiation heating unit for heating by the heated water, the temperature of the outdoor air or the charge for the unit heat quantity.

In this case, the controller may receive the charge information according to the unit calories from the energy management device of the intelligent power grid, and selectively operate the boiler or the hydro unit by comparing the electricity rate per unit calories and gas rate per unit calories. .

In addition, the energy management device of the intelligent power grid receives the charge information according to the unit calories, compares the electricity rate per unit calories and gas rate per unit calories, and transmits the control signals of the outdoor unit, the hydro unit and the boiler to the control unit Can transmit

The electric charge per unit calorie may be updated at a predetermined interval.

Here, the gas rate per unit calories may be input to the energy management device or the control unit.

In this case, the control unit or the energy management device may selectively operate the hydro unit or the boiler to minimize the charge for the same amount of heat.

In addition, when the magnitude of the electricity rate per unit calorie and gas rate per unit calorie changes during the operation of any one of the boiler or the hydro unit, the controller or the energy management device stops any one operation. You can drive the other one.

When the temperature of the outdoor air is equal to or less than the first sub-zero temperature, the controller or the energy management device may stop the operation of the boiler and operate the hydro unit even when the electric charge per unit calorie is low. have.

Herein, when the temperature of the outdoor air is equal to or less than a first predetermined subzero temperature, the controller or the energy management device stops the operation of the hydro unit and operates the boiler, and the temperature of the outdoor air is below the predetermined first subzero temperature. If the temperature is above, the controller may stop the operation of the boiler and operate the hydro unit.

In this case, when the user sets the maximum rate for the unit calories, the control unit or the energy management device compares the electricity rate per unit calories and gas rate per unit calories with the maximum rate for the unit calories set by the user, The controller may operate the boiler only in a section in which the electric charge per unit calorie is higher than the maximum rate for the unit calorie set by the user.

In addition, the control unit or the energy management device compares the electricity rate per unit calories and gas rate per unit calories with the maximum rate for the unit calories set by the user, the electricity rate per unit calories is set to the unit calories set by the user The controller may operate the hydro unit even when the temperature of the outdoor air is equal to or less than the first predetermined temperature even if it is lower than the maximum rate.

The control unit may be connected to an energy management device of an intelligent power grid, and the control unit may be provided in the hydro unit, and the hydro unit may be communicatively connected to the outdoor unit, the hydro unit, and the boiler.

Here, the water supply unit may further include a hot water tank for heating and storing the water supplied from the tap water by the heat exchanged with the refrigerant in the hydro unit, or after the water supplied from the tap water is heated by the boiler.

In this case, when the temperature of the outdoor air is greater than or equal to a predetermined first sub-zero temperature or less than a second temperature of a predetermined image, water circulating through the radiant heating unit after heat exchange with a refrigerant in the hydro unit may pass through the boiler.

In addition, the boiler may operate only a pump provided inside the boiler without a gas combustion process.

And, when the temperature of the outdoor air is more than the second temperature of the predetermined image, the water circulating the heat radiating heating unit after heat exchange with the refrigerant in the hydro unit may not pass through the boiler.

Here, when it is determined that one of the hydro unit and the boiler is faulty, the controller or the energy management device may operate the other one that can be operated irrespective of the charge for the temperature or unit heat of outdoor air.

In addition, in order to solve the above problems, the present invention is a control method of a heat pump having a hydro unit and a boiler for heat exchange of water and refrigerant, the control variable collection step of collecting the control variable of the heat pump, the control variable A heat pump operation step of determining an operation mode of the heat pump based on the control information collected in the collecting step, and a heat pump operation step of operating the heat pump according to the operation mode determined in the operation mode determination step; Provides a control method.

The control variable collected in the control variable collection step may include at least one or more of a temperature of outdoor air, an electric charge for a unit calorie, a gas rate for a unit calorie, and a failure of a boiler or a hydro unit.

Here, the information related to the electric charge for the unit calorie of the control variables collected in the control variable collection step may be provided from the energy management device of the intelligent power grid.

In this case, the control variable collecting step may be repeated at a predetermined interval.

In addition, the operation mode determination step may determine the operation mode to operate the hydro unit or the boiler so that the charge for the same amount of heat is minimized.

The operation mode determining step may include: when the magnitude of the electricity rate per unit calorie and gas rate per unit calorie is changed during operation of any one of the boiler or the hydro unit, the control unit or the energy management device is in operation. The operation mode may be determined to stop one operation and to operate the other.

According to the control method of the heat pump and the heat pump according to the present invention, the present invention is provided with a boiler, it can be selectively operated in conjunction with the boiler in accordance with the outdoor temperature or electricity rate per unit calories.

In addition, according to the control method of the heat pump and the heat pump according to the present invention, when the temperature of the outdoor air falls below a predetermined temperature, the boiler can be used, it is possible to provide a sufficient heating or hot water supply function to the user.

In addition, according to the control method of the heat pump and the heat pump according to the present invention, when the power grid is an intelligent power grid, it is possible to selectively operate the boiler or hydro unit constituting the heat pump according to the electric charge per unit calorie, heating or The cost of hot water supply can be minimized.

1 is a schematic diagram of an intelligent power grid.
2 is a schematic diagram showing a power supply network system in a home, which is a major consumer of an intelligent power grid.
Figure 3 shows a detailed configuration of the heat pump according to the present invention.
4 shows the flow of water and refrigerant in one mode of operation of a heat pump according to the invention.
Figure 5 shows the flow of water and refrigerant in another mode of operation of the heat pump according to the invention.
Figure 6 shows the flow of water and refrigerant in another mode of operation of the heat pump according to the invention.
Figure 7 shows the flow of water and refrigerant in another mode of operation of the heat pump according to the invention.
8 shows a schematic diagram of another embodiment of a heat pump according to the present invention.
9 is a block diagram related to the priority of the operation according to the hot water supply hot water or the floor heating temperature of the operation mode to perform the hot water supply and the floor heating, using the hot water operation and the floor heating operation of the heat pump according to the present invention.
Figure 10 shows one embodiment of a control method of a heat pump according to the present invention.
11 is a block diagram of an upper limit pricing operation mode as a control method of a heat pump according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like numbers refer to like elements throughout.

1 is a schematic diagram of a so-called 'smart grid' which is an intelligent or next generation grid. Referring to FIG. 1, the intelligent power grid may include a power plant that generates power through thermal power generation, nuclear power generation or hydroelectric power generation, a solar power plant using solar or wind power belonging to renewable energy, and a wind power plant.

The thermal power plant, nuclear power plant or hydroelectric power plant may send power to a power plant through a transmission line, and the power plant may supply electricity to a substation and a storage device. In addition, the electricity produced in photovoltaic power plants and wind power plants can be supplied to substations. On the other hand, the electricity transmitted to the substation can be distributed to the office or each home via the power storage device.

On the other hand, in the case of adopting a home electric power network (HAN, home area network (described in detail in FIG. 2)), even in a normal home is installed in a self-solar power generation facility of the general home, or a PHEV (plug in hybrid electric vehicle) The fuel cell can supply its own electricity and the extra electricity can be sold back to the outside. In addition, the office or home may be provided with a so-called 'smart measuring device' that can grasp the power and electricity bills used in each demand in real time. Through the smart measurement device, the user can recognize the amount of electricity and the electricity bill currently used, and can devise a method of reducing the power consumption or the electricity bill according to the situation.

On the other hand, demand sources using the power plants, power stations, storage devices and power described above in the intelligent power grid are capable of bidirectional communication. Therefore, apart from allowing the customer to receive electricity unilaterally, the situation of the customer can be notified to the storage device, the power station, and the power plant so that electricity can be produced and distributed according to the situation of the customer. Therefore, an intelligent power grid requires an energy management system (EMS), which is responsible for real-time power management and real-time prediction of power demand, and an advanced metering infrastructure (AMI) that measures power consumption in real time. do. The energy management device and the measurement device may be configured as separate devices, or may be configured to perform the functions of both devices in one device.

Instrumentation under the intelligent power grid is a foundation technology to integrate consumers based on the 'open architecture', allowing consumers to use electricity efficiently, and power suppliers to detect system problems and operate the system efficiently. Provide the ability to Here, unlike the general communication network, the 'open architecture' refers to a standard that allows all electric appliances to be connected to each other regardless of the manufacturer of the electric device in the intelligent power grid system.

Thus, the instrumentation used in the intelligent grid enables a consumer friendly efficiency concept such as "Prices to Devices". That is, real-time price information of the electric power market may be transmitted through an energy management device (EMS) installed in each home, and the energy management device (EMS) may control and communicate with an electric device provided in each home.

Of course, the energy management device (EMS) can directly control each electrical device, it is also possible to provide only the information related to the electricity bill for each electrical appliance. In the latter case, the controller of each electrical appliance may control each electrical appliance according to the provided fee information.

The present invention will be described later in detail, but relates to a heat pump, including an outdoor unit, a hydro unit and a boiler constituting the heat pump, the outdoor unit, the hydro unit and the boiler may be controlled by a control unit of the heat pump, heat pump It may be controlled by an energy management device (EMS) communicatively coupled to the control unit.

In this case, the control unit of the heat pump is connected to the energy management device of the intelligent power grid, the control unit is provided in the hydro unit, the hydro unit may be communicatively connected to the outdoor unit, the hydro unit and the boiler.

Accordingly, the user can save power and energy by recognizing power information of each electric device by the energy management device (EMS) and performing power information processing such as power consumption amount or electric charge limit setting based on the power information. The above-described energy management device (EMS) is a local energy management device (Local EMS) used in the office or home, information collected by the local energy management device (Local EMS) by bidirectional communication with the local energy management device (EMS) It can be configured as a central energy management device (Central EMS) for processing.

In addition, since the real-time communication about the power information between the power supplier and the consumer in the intelligent power grid is possible, the response of various consumers according to the power supply, that is, "real-time grid response" is possible. For example, when the price of power varies according to time zones, or when the price of power varies according to a power supply company, the time and amount of use of power by a prisoner may vary accordingly. In addition, the power supplier may adjust the power price or adjust the amount of power supply according to the response of the consumer.

2 is a schematic diagram showing a power supply network system 10 in a home, which is a major consumer of an intelligent power grid.

Referring to FIG. 2, the power supply network system 10 includes a measurement device (smart meter) 20, a measurement device 20, and a home appliance that may measure power and / or electricity rates supplied to each home in real time. It may be provided with an energy management device 30 is connected to a plurality of electrical devices such as and control their operation. On the other hand, the electricity bill of each household is charged at an hourly rate, and the hourly electricity bill is expensive in a time section in which the power consumption is rapidly increased, and the hourly electricity bill may be cheaper at night time, such as at a relatively low power consumption. .

The energy management device 30 is a refrigerator 101, a washing machine and a dryer 102, an indoor unit I of an air conditioner, a hydro unit H, a TV 105 or a cooking appliance 104 through a home network. Can be connected to electrical appliances such as

The heat pump according to the present invention may include a hydro unit, and may include at least one indoor unit connected to an outdoor unit constituting the heat pump.

As described above, the energy management device 30 may transmit only information on an electric charge to the control unit of the electrical appliance, or directly control each electrical appliance.

In addition, the control unit of the heat pump according to the present invention may be provided in the hydro unit (H) constituting the heat pump, the energy management device 30 may be connected to communicate with the hydro unit.

The hydro unit H may be configured to be communicatively connected to a boiler or an indoor unit constituting the heat pump so as to be controlled by a control unit or an energy management device of the heat pump. Of course, the indoor unit shown in FIG. 2 may also be configured to be communicatively connected to the energy management device 30 so as to be controlled by the control unit or the energy management device of the heat pump, as described below via a hydro unit. It may be controlled.

Communication inside the home can be via wireless or wired, such as a PLC. In addition, each electrical appliance may also be arranged to be connected to other electrical appliances to enable communication.

Hereinafter, the heat pump and the control method of the heat pump according to the present invention will be described with reference to FIG. 3.

3 shows a detailed configuration diagram of a heat pump 1000 according to the present invention.

One embodiment of the present invention is an outdoor unit (I) for compressing a refrigerant, a hydro unit (H) for heat exchange between the compressed refrigerant and water, a boiler 700 for selectively heating the water circulating the hydro unit, Control the outdoor unit, the hydro unit and the boiler according to the heat radiation unit 600 for heating by the water heated in the hydro unit (H) or the boiler 700, the temperature of the outdoor air or a charge for unit heat quantity It provides a heat pump 1000 including a control unit.

The control unit receives charge information according to unit calories from the energy management device 30 (FIG. 2) of the intelligent power grid, and compares the electric charge per unit calorie and gas rate per unit calorie to the boiler 700 or the hydro unit ( H) can be operated selectively.

The air conditioning operation by the heat pump 1000 may be performed by a heating operation of sucking the indoor air to heat the air conditioning space and a cooling operation of cooling the air conditioning space by sucking the indoor air.

In the outdoor unit O, an accumulator 24 is installed in the suction passage 22 of the compressor 120 to prevent liquid refrigerant from flowing into the compressor 120, and the compressor discharge passage 26 is installed in the compressor 120. An oil separator 130 separating the oil from the discharged refrigerant and oil and recovering the oil from the compressor 120 is installed.

The outdoor heat exchanger 140 is a place where the refrigerant is condensed or evaporated as the heat is exchanged with the outdoor air. The outdoor heat exchanger 140 may be configured as an air refrigerant heat exchanger in which outdoor air is heat-exchanged with the refrigerant. It is also possible.

Hereinafter, for convenience of description, a case in which the outdoor air is configured as an air refrigerant heat exchanger in which heat is exchanged with the refrigerant will be described as an example.

When the outdoor heat exchanger 140 is configured as an air refrigerant heat exchanger, the outdoor fan 150 is installed to blow outdoor air to the outdoor heat exchanger 140.

The outdoor heat exchanger 140 provided in the outdoor unit O and the indoor heat exchanger 320 provided in the indoor unit I and the heat exchanger connection pipe 32 are connected to each other.

Expansion mechanisms 210 and 310 may be provided in the heat exchanger connection pipe (32).

The expansion mechanism includes an outdoor expansion mechanism 210 installed close to the outdoor heat exchanger 140 among the outdoor heat exchanger 140 and the indoor heat exchanger 320, and an interior of the outdoor heat exchanger 140 and the indoor heat exchanger 320. It includes an indoor expansion mechanism 310 installed in close proximity to the heat exchanger (320).

The heat exchanger connection pipe 32 includes an outdoor heat exchanger-outdoor expansion device connection pipe 34 to which the outdoor heat exchanger 140 and the outdoor expansion device 210 are connected, and an outdoor expansion device 210 and an indoor expansion device 310. ) Is connected to the expansion mechanism connecting pipe 36 and the indoor expansion mechanism 310 and the indoor heat exchanger 320 is connected to the indoor heat exchanger (320).

The indoor heat exchanger 320 is a heat exchanger that cools or heats a room by heat-exchanging indoor air with a refrigerant, and the indoor fan 39 blows indoor air to the indoor heat exchanger 320.

Therefore, in the cooling mode in which the heat pump 1000 cools the room through the indoor unit I, the outdoor unit O includes the outdoor heat exchanger 140 and the expansion mechanism 210 (the refrigerant compressed in the compressor 120). After passing through the 310 and the indoor heat exchanger 320 in sequence, it is recovered by the compressor 120 and the indoor heat exchanger 320 functions as an evaporator.

In the heating mode in which the heat pump 1000 heats the room through the indoor unit I, the outdoor unit O includes the indoor heat exchanger 320 and the expansion mechanism 210 (the refrigerant compressed by the compressor 120). After passing through the 310 and the outdoor heat exchanger 140 in sequence, it is connected to the compressor 120 to be recovered so that the indoor heat exchanger 14 functions as a condenser.

The outdoor unit O passes through the outdoor heat exchanger 140, the expansion mechanism 210, 310, and the indoor heat exchanger 320 sequentially during the heating operation of the refrigerant compressed by the compressor 120, and then moves to the compressor 120. The air conditioner may be configured as a combined air-conditioning and air-conditioning unit that is recovered and returned to the compressor 120 after sequentially passing through the indoor heat exchanger 320, the expansion mechanisms 210, 310, and the outdoor heat exchanger 140 during the cooling operation. .

The outdoor unit O causes the refrigerant to flow in the order of the compressor 120, the outdoor heat exchanger 140, the expansion mechanisms 210, 310, and the indoor heat exchanger 320, or the compressor 120 and the indoor heat exchanger 320. ) And an expansion and cooling mechanism 210, 310 and the outdoor heat exchanger 140 may further include a cooling and heating switching valve 190 to flow.

The heating and cooling switching valve 190 is connected to the compressor 120, the compressor suction passage 22, and the compressor discharge passage 26, and is connected to the outdoor heat exchanger 140 and the outdoor heat exchanger connecting pipe 42, the indoor heat exchange Machine 320 is connected to the indoor heat exchanger connection pipe (44).

The outdoor unit O includes a refrigerant control valve 170 that can selectively supply the refrigerant supplied from the compressor discharge passage 26 to the hydro unit H or the cooling / heating switching valve 190.

The refrigerant control valve 170 may be provided in the form of a three-way valve, and when the refrigerant control valve 170 is provided as a three-way valve, the refrigerant control valve 170 is provided on the compressor discharge passage 26. In addition, the hydro unit supply passage 52 for supplying the refrigerant to the hydro unit H may be branched.

In addition, the outdoor unit O may be provided with an auxiliary refrigerant control valve 180. The auxiliary refrigerant control valve 180 allows the refrigerant supplied from the hydro unit H, which will be described later, to be supplied to the heat exchanger bypass flow path 8 or to the cooling / heating switching valve 190.

The auxiliary refrigerant control valve 180 may be configured as a three-way valve. When the auxiliary refrigerant control valve 180 is configured as a three-way valve, the auxiliary refrigerant control valve 180 is a refrigerant in the hydro unit (H). May be recovered, installed on the hydro unit recovery passage 54 which is connected to the compressor discharge passage 26, and the heat exchanger bypass passage 8 may be branched.

The heat exchanger according to the present invention is installed in the heat exchanger bypass flow path (8) and between the heat exchanger bypass valve (230) and the heat exchanger bypass flow path (8) and the indoor expansion mechanism (310) to control the flow of refrigerant. It may further include a liquid refrigerant valve 240 is installed to interrupt the flow of the refrigerant.

The heat exchanger bypass valve 230 is opened in the case of hot water operation and / or heat dissipation heating operation to be described later, and the simultaneous operation of the air conditioning operation, the air conditioning operation and the hot water operation, or the simultaneous operation of the air conditioning operation and the hot water operation and the heat dissipation heating operation. It is closed.

The liquid refrigerant valve 240 is opened when the air conditioning operation or the simultaneous operation of the air conditioning operation and the hot water supply operation or the simultaneous operation of the air conditioning operation and the hot water supply operation and the heat dissipation heating operation, the simultaneous operation of the hot water operation and the heat dissipation heating operation, or the heat radiation heating operation It is closed in case of hot water operation.

The heat pump 1000 according to the present invention includes a hydro unit H for heat-exchanging water with the refrigerant supplied from the outdoor unit O for heating or hot water supply.

The hydro unit (H) may be provided with a first heat exchanger 510 and a second heat exchanger 530 for heat-exchanging refrigerant and water therein for hot water supply or heating.

The first heat exchanger 510 and the second heat exchanger 530 may be configured to sequentially flow the refrigerant supplied from the outdoor unit O, and the second heat exchanger 530 may be configured to bypass if necessary. Can be.

The first heat exchanger 510 is provided on the hydro unit circulation passage 50 in the outdoor unit O so that the refrigerant discharged from the compressor 120 may be used for hot water supply and then expanded, evaporated, and compressed in the outdoor unit O. do.

The hydro unit circulation passage 50 includes a hydro unit supply passage 52 through which a refrigerant of the outdoor unit O, in particular, a refrigerant compressed in the compressor 120 flows to the first heat exchanger 510, and a first heat exchanger ( The refrigerant flowing out of the 510 includes an outdoor unit O, in particular, a hydro unit recovery passage 54 flowing to the cooling / heating switching valve 40.

One end of the hydro unit supply passage 52 is connected to the refrigerant control valve 170 provided in the compressor discharge passage 26, and the other end thereof is connected to the first heat exchanger 510.

One end of the hydro unit recovery passage 54 is connected to the first heat exchanger 510 and the other end thereof is connected to the compressor discharge passage 26.

When the refrigerant control unit 6 causes the refrigerant to flow into the first heat exchanger 510, the first heat exchanger 510 causes the refrigerant superheated in the compressor 120 to condense while heat-exchanging with water used for the hot water supply. It's a kind of desuperheater. Therefore, the first heat exchanger 510 can quickly heat the water supplied to the hot water supply.

The first heat exchanger 510 has a refrigerant passage through which the superheated refrigerant passes and a passage through which water used for hot water passes.

The first heat exchanger 510 may be a double tube heat exchanger formed between the refrigerant passage and the water passage with the heat transfer member interposed therebetween. The first heat exchanger 510 may be a plate heat exchanger having the refrigerant passage and the water passage alternately formed with the heat transfer member interposed therebetween. It is also possible. For convenience of description, the first heat exchanger 510 is provided as a heat exchanger having a double tube structure, and the second heat exchanger 530 will be described as a case consisting of a plate heat exchanger.

The first heat exchanger 510 is connected to the hot water supply tank 800, the hot water supply pipe 58, and the hot water recovery pipe 59, 59, and the hot water recovery pipe 59 is provided with a hot water pump 60.

In the hydro unit H of the heat pump 1000 according to the present invention, the second heat exchanger controls the flow of the refrigerant so that the refrigerant passing through the first heat exchanger 510 passes or bypasses the second heat exchanger 530. The refrigerant control valve 540 is included.

The second heat exchanger 530 may be provided on the hydro unit recovery passage 54 and may allow the refrigerant passing through the first heat exchanger 510 to always be used for radiant heating such as floor heating. It can be installed to selectively perform heating.

The second heat exchanger refrigerant control valve 540 may allow the refrigerant to pass through the second heat exchanger 530 at a time when the user selects the floor heating.

When the second heat exchanger refrigerant control valve 540 includes a heat dissipation heating operation as a floor heating operation, the second heat exchanger refrigerant control valve 540 adjusts the flow direction of the refrigerant so that the refrigerant flows to the second heat exchanger 530, and does not include the heat dissipation heating operation. In this case, the refrigerant controls the flow direction of the refrigerant to bypass the second heat exchanger 530.

In the second heat exchanger refrigerant control valve 540, the refrigerant is transferred to the second heat exchanger 530 during the heat dissipation heating operation, the simultaneous operation of the heat dissipation heating operation and the hot water operation, and the simultaneous operation of the heat dissipation heating operation, the hot water operation and the air conditioning operation. It is adjusted to flow.

As shown in FIG. 1, the second heat exchanger refrigerant control valve 540 may be configured as a one-way valve installed in the hot water supply passage 50, particularly the hydro unit recovery passage 54, to select a refrigerant outflow direction. have.

When the second heat exchanger refrigerant control valve 540 is a three-way valve, the inlet portion and the first outlet portion are connected to the hydro unit recovery passage 54, and the second outlet portion is connected to the heating inlet passage 74.

The second heat exchanger refrigerant control valve 540 is installed in the heating inflow passage 74 and is installed in the first valve and the hydro unit recovery passage 54 which are opened during the heat radiation heating operation and closed when the heat radiation heating operation is not performed. It is also possible to include a second valve which is sealed during the heat dissipation heating operation and opened when the heat dissipation heating operation is not performed.

The heating outflow channel 76 is provided with a check valve 560 which prevents the refrigerant of the hydro unit recovery channel 54 from flowing back to the second heat exchanger 530 through the heating outflow channel 76.

In the heat pump 1000 according to the present invention, the refrigerant passing through the first heat exchanger 510 heats water and then flows into the hydro unit circulation passage 50 so that the hydro unit circulation passage 50 and the water refrigerant heat exchanger are connected. It may further include a second heat exchanger 530 connected to the flow path (70).

The water refrigerant heat exchanger connection passage 70 includes a heating inflow passage 74 through which the refrigerant of the hydro unit recovery passage 54 flows into the second heat exchanger 530, and a refrigerant passing through the second heat exchanger 530. And a heating outflow channel 76 that flows into the hydro unit recovery channel 54.

The second heat exchanger 530 is a condensation heat exchanger in which the refrigerant condensed primarily in the first heat exchanger 510 is further condensed while heat exchanged with water.

The second heat exchanger 530 has a refrigerant passage through which the refrigerant passing through the first heat exchanger 510 passes, and a passage through which water used for floor heating or radiator heating passes.

The water heat-exchanged with the refrigerant in the second heat exchanger 530 is used for heating in the heat radiation heating unit 600 for heating through the heat radiation process.

For convenience of description, in FIG. 3, the heat dissipation heating part 600 illustrates a floor heating part including a heat dissipation heating pipe 610 for heating the floor. Therefore, hereinafter, the heat radiating heating unit is used as a concept including a floor heating unit.

In the heat pump 1000 according to the present invention, the second heat exchanger 530 is provided with a heat dissipation heating unit 600 installed on the floor of the room, and is connected to the floor supply pipe 82 and the floor recovery pipe 83, and the floor recovery pipe ( 83, the floor heating pump 550 is installed.

The refrigerant passing through the first heat exchanger 510 may be further used for indoor floor heating via the second heat exchanger 530.

The heat pump 1000 according to the present invention is a means for providing a heat source used for heating or hot water supply, and in addition to the heat pump 1000 described above, a boiler 700 may be further provided.

When the outdoor temperature is less than or equal to the predetermined temperature, the efficiency of heating through the hydro unit using the coolant may drop sharply. Therefore, when outdoor air falls below a predetermined temperature, a heat source for heating may be selectively operated from the heat pump 1000 to the boiler 700.

The boiler 700 may include a combustion heating unit 720 for burning fossil fuel and a heat exchange heating unit 710 for heating in a heat exchange manner using water heated in the combustion heating unit 720. The combustion heating unit 720 heats the water supplied through the bottom supply pipe 82, and the heat exchange heating unit 710 receives the water supplied from the hot water supply tank 800, which will be described later, in the combustion heating unit 720. It can be heated by heat exchange with water heated at.

The bottom supply pipe 82 is provided with a first boiler valve 740 and a second boiler valve 750, respectively. The first boiler valve 740 and the second boiler valve 750 are provided in the bottom supply pipe 82, the boiler supply pipe 82 and the boiler recovery pipe 83 which is a pipe passing through the boiler 700 is Each is connected.

The boiler supply pipe 82 and the boiler recovery pipe 83 supply water circulating in the hydro unit H to the combustion heating unit provided in the boiler 700.

The first boiler valve 740 and the second boiler valve 750 directly supply the water supplied from the hydro unit H to the heat dissipation heating unit 600, or the combustion heating unit of the boiler 700 ( The flow path is selectively blocked to be supplied via 720.

As will be described in detail later, if the water supplied from the hydro unit (H) via the boiler 700 is to prevent the freezing of the boiler 700 when the boiler 700 is not operated, It may be the case that the boiler 700 is operated.

The boiler 700 may further include a boiler pump 730 on the boiler recovery pipe 83. When the boiler 700 is operated as a pipe through which water supplied from the hot water tank 800 is passed, water used for hot water may be heated.

The boiler supply pipe 82 may be branched in the boiler 700 to have a structure in which a part of the water heated by the combustion heating unit 720 is supplied to the heat pipe heating unit 710. A method of supplying a portion of the water heated in the combustion heating unit 720 to the heat pipe heating unit 710 may be branched from a pipe passing through the combustion heating unit 720 to pass through the heat exchange heating unit 710. By way of pipe 715.

By the diesel pipe 715, water heated by the combustion heat in the combustion heating unit 720 may be supplied to the heat exchange heating unit 710 to heat the water supplied from the tap water and supply it to the hot water supply tank side. I'll explain more about this later.

The heat pump 1000 according to the present invention may include a hot water tank 800 to provide hot water operation.

The hot water tank 800 heats the water in the storage space S by using a storage space S for storing the water used for the hot water and water heat-exchanged with the refrigerant in the hydro unit H therein. A hot water tank heat exchanger 810 is provided.

The hot water tank heat exchanger 810 is supplied with water through the hydro unit (H) through the hot water supply branch pipe 86 branched from the hot water supply pipe 58, the hot water supply tank 800 After heat exchange with the stored water, it is recovered to the hot water recovery pipe 59 through the hot water recovery branch pipe (87).

A first hot water supply valve 920 and a second hot water supply valve 930 are provided at ends of the hot water supply pipe 58 and the hot water recovery pipe 59, respectively, and each of the first hot water supply valve 920 and the second hot water supply valve 920 and the second hot water supply valve 920 are provided. The hot water supply branch pipe 86 and the hot water recovery branch pipe 87 may be branched from the hot water supply valve 930.

The hot water recovery pipe 59 is connected to the tap water connection pipe 91 connecting the tap water through the second hot water valve 930 and selectively supplied to the boiler 700 through the hot water recovery pipe 59. Can be.

In addition, a constant supply pipe 90 is branched from the water supply connection pipe 91 to supply water directly to the storage space S of the hot water supply tank 800, and the water supply valve 90 is provided in the water supply pipe 90. 940 is provided, the hot water supply tank heat exchanger bypass tube 89 for connecting the first hot water valve 920 and the water supply valve 940 is provided.

The first hot water valve 920, the second hot water valve 930, and the tap water valve 940 may be provided as three-way valves.

Detailed descriptions related to the operation of the first hot water valve 920, the second hot water valve 930, and the tap water valve 940 will be described later.

The hot water tank 800 supplies the hot water and the like stored therein to the hot water supply unit 900 according to a user's request.

As described above, the heat pump 1000 according to the present invention heats the water stored in the hot water supply tank 800 using water exchanged with the refrigerant in the hydro unit H, or provides water supply to provide hot water operation. After heating the water supplied from the boiler 700 may be used to supply the hot water supply tank (800).

Detailed descriptions related to the operation and specific conditions for selectively operating the hydro unit (H) and the boiler 700 as a heat source used for hot water operation will be deferred later.

4 shows the flow of water and refrigerant in one mode of operation of the heat pump 1000 according to the present invention.

4 illustrates an operation mode for simultaneously performing hot water supply operation and floor heating operation using the heat pump 1000. In addition, the indoor unit I is not driven for convenience of description.

For convenience of description, the temperature at which the operation mode of the heat pump according to the present invention is divided is defined as a first sub-zero temperature T1 among the sub-zero temperatures and a second temperature T2 of the predetermined image among the temperatures of the image.

When the outdoor temperature To is greater than or equal to the second temperature T2 of the predetermined image, the hot water pump 1000 according to the present invention may provide a hot water supply operation and a floor heating function. The heat pump 1000 according to the present invention includes the boiler 700, but when the temperature To of the outdoor air is greater than or equal to a predetermined temperature, for example, the second temperature T2 of the image, the boiler 700 is operated. Need not be.

The refrigerant supplied to the outdoor unit O is supplied to the outdoor heat exchanger 140, undergoes an expansion process at the outdoor expansion mechanism 210, and undergoes an evaporation process at the outdoor heat exchanger 14. The refrigerant evaporated in the outdoor heat exchanger 140 is supplied to the compressor 120.

The air-conditioning switching valve 190 supplies the refrigerant evaporated in the outdoor heat exchanger 140 to the compressor 120 via the accumulator 110 in front of the compressor 120, and then compresses the refrigerant in the compressor 120. The refrigerant is supplied to the compressor discharge passage 26 through the oil separator 130.

The refrigerant compressed by the compressor 120 is supplied to the hydro unit H through the compressor discharge passage 26. Specifically, the refrigerant supplied to the hydro unit H through the hydro unit supply passage 52 branched from the refrigerant control valve 170 provided in the compressor discharge passage 26 may be formed of the first heat exchanger 510 and the first heat exchanger 510. 2 heat exchangers 530 are sequentially supplied.

The refrigerant passing through the first heat exchanger 510 heats the water circulating in the hot water tank 810 and the first heat exchanger 510 of the hot water tank 800, and the second heat exchanger 530. The refrigerant passing through heats the water circulating through the heat dissipation heating part 600 and the second heat exchanger 510.

Accordingly, the water heat-exchanged with the refrigerant in the first heat exchanger 510 may provide a hot water supply function by heating the water stored in the storage space S inside the hot water tank 800.

Water stored in the storage space (S) inside the hot water tank 800 is provided from the water supply through the constant supply pipe (90).

In the operation mode illustrated in FIG. 4, the water heat-exchanged with the refrigerant in the first heat exchanger 510 of the hydro unit H circulates through the hot water tank heat exchanger 810 of the hot water tank 800. That is, water circulating in the first heat exchanger 510 of the hydro unit H and the hot water tank heat exchanger 810 of the hot water tank 800 is absorbed by the first heat exchanger 510 and the hot water tank The heat dissipation process in the hot water supply tank heat exchanger 810 of 800 is repeated.

In addition, the water circulating in the first heat exchanger 510 of the hydro unit H and the hot water tank heat exchanger 810 of the hot water tank 800 is a boiler diesel pipe branched from the hot water recovery pipe 59. Although 60 passes through the heat exchange heating unit 710 of the boiler 700, since the boiler 700 is not operated, a heat source for heating the hot water may be provided only in the first heat exchanger 510.

In this case, the first boiler valve 740 and the second boiler valve 750 should be controlled so that the water heat exchanged with the refrigerant in the second heat exchanger 530 does not pass through the boiler 700.

In addition, in the operation mode illustrated in FIG. 4, the water heat-exchanged with the refrigerant in the second heat exchanger 530 of the hydro unit H circulates through the heating pipe 610 of the heat dissipation heater 600. That is, water circulating in the second heat exchanger 530 of the hydro unit H and the heat exchanger 610 of the heat dissipation heating part 600 absorbs heat from the second heat exchanger 530 and the heat dissipation heating part. The heat dissipation in the heat exchanger 610 of 600 is repeated.

The water circulating in the second heat exchanger 530 of the hydro unit H and the heat exchanger 610 of the heat dissipation heating unit 600 has a second temperature of an image in which the outdoor air temperature To is predetermined. If (T2) or more, since the possibility of freezing of the boiler 700 is low, it is not necessary to pass through the boiler 700.

Here, the second temperature T2 of the predetermined image may be a temperature of about 3 degrees or more and 7 degrees or less. For example, the second temperature T2 of the predetermined image may be an image of 5 degrees. The temperature range above the second temperature T2 may be the highest temperature range among the temperature ranges in which the heating function by the heat pump is used.

In the operation mode illustrated in FIG. 4, a hot water pump 520 and a floor heating pump 550 for pumping water circulating in the hydro unit H may be operated.

The second heat exchanger refrigerant control valve 540 provided in the hydro unit H controls the direction of the refrigerant such that the refrigerant passing through the first heat exchanger 510 passes through the second heat exchanger 530. do.

5 shows the flow of water and refrigerant in another mode of operation of the heat pump 1000 according to the present invention.

Descriptions duplicated with the description with reference to FIG. 4 will be omitted. Likewise, it is assumed that the indoor unit I is not operated, and it is assumed that the floor heating and the hot water supply operation are provided through the heat pump 1000.

5 illustrates an operation mode when the temperature To of the outdoor air is lower than the second temperature T2 of the predetermined image and higher than the predetermined first sub-temperature T1. In the operation mode shown in FIG. 4, each of the water exchanged with the refrigerant in the second heat exchanger 530 of the hydro unit H is circulated through the heat exchanger 610 of the heat radiating heating unit 600 to heat the floor. Is the same as the operation mode shown in FIG.

However, since the temperature To of the outdoor air is less than or equal to the second temperature T2 of the predetermined image, there is a risk of freezing of the boiler 700 due to the water remaining in the pipe inside the boiler 700.

As described above, the second temperature T2 of the predetermined image is approximately 3 degrees or more and 7 degrees, and the boiler 700 does not circulate when the temperature To of the outdoor air is less than or equal to the second temperature T2. ) The water inside the pipes may freeze. Accordingly, in order to prevent freezing of the boiler 700, the heat pump 1000 according to the present invention operates when the temperature To of the outdoor air is less than or equal to a first sub-zero temperature T1. Regardless of whether the water supplied to the heat dissipation heating unit 600 is allowed to pass through the boiler 700.

Here, the predetermined sub-zero first temperature T1 may be at least 7 degrees and at most 3 degrees. For example, when the predetermined subzero first temperature T1 is minus 5 degrees, and the temperature To of the outdoor air is greater than or equal to the predetermined subzero first temperature T1, the boiler 700 for floor heating or hot water supply. ) Is not necessarily operated, hot water supply and floor heating is possible only by heat exchange by the hydro unit (H).

However, as described above, in order to prevent freezing of the boiler 700, the water supplied to the floor heating unit may pass through the boiler 700.

In this case, the first boiler valve 740 and the second boiler valve 750 may control the water heat exchanged with the refrigerant in the second heat exchanger 530 via the boiler 700, and the hydro unit ( The hot water pump 520 and the floor heating pump 550 for pumping the water circulating H) are operated.

6 shows the flow of water and refrigerant in another mode of operation of the heat pump 1000 according to the present invention.

Descriptions duplicated with those described with reference to FIGS. 4 and 5 will be omitted.

Similarly, it is assumed that the indoor unit I is not operated, and it is assumed that the boiler 700 is operated instead of the heat pump 1000 in order to provide heating or hot water operation.

For example, when the predetermined first sub-zero temperature T1 is within the range of minus 7 degrees to minus 3 degrees, and the temperature To of the outdoor air is equal to or less than the predetermined first minus temperature T1, the cold winter weather Since it is assumed that the efficiency of the heat pump 1000 using the refrigerant is rapidly lowered, it may not reach a satisfactory hot water supply temperature.

Therefore, when the outdoor air temperature To is very low, the operation of the hydro unit H may be stopped and the boiler 700 may be operated.

First, the hot water operation will be described first. In order to provide a hot water supply operation when the temperature To of the outdoor air is greater than or equal to a predetermined first sub-zero temperature T1, the heat pump 1000 according to the present invention is a hot water supply tank provided in the hot water supply tank 800. Instead of taking a method of heating water stored in the hot water supply tank 800 through the heat exchanger 810, the water supplied from the tap water is heated by the boiler 700, and the heated water is directly heated in the hot water supply tank 800. Can be used to supply

Therefore, the constant introduced through the water supply connection pipe 91 passes through the heat exchange heating part 710 of the boiler 700 through the boiler gas pipe 60 along the hot water recovery pipe 59. Since the boiler 700 is in operation, the constant heated by heat exchange in the heat exchange heating unit 710 of the boiler 700 passes through the hydro unit H, and the hot water supply tank through the hot water supply pipe 58. It is supplied to the (800) side.

The heated constant supplied through the hot water supply pipe 58 is not supplied from the first hot water supply valve 920 to the hot water supply branch pipe 86, but is connected to the first hot water supply valve 920. Water supplied to the heat exchanger bypass tube 89 and supplied to the hot water supply tank heat exchanger bypass tube 89 is supplied to the storage space S inside the hot water supply tank 800 through a constant supply pipe 90.

In this way, the water supplied from the tap water may be heated in the boiler 700 and directly supplied into the hot water supply tank 800.

In this case, the second hot water valve 930 controls the water supplied from the water supply connection pipe 91 to be introduced into the hot water recovery pipe 59, and the first hot water valve 920 is a hot water supply pipe 58. In order to control the water supplied from the hot water supply branch pipe (86) to the hot water supply tank heat exchanger bypass pipe (89), the water supply valve (940) is also provided that the water supplied from the tap water is supplied to the constant supply pipe (90) It blocks and controls only the water supplied from the hot water tank heat exchanger bypass tube 89 to be supplied into the storage space S of the hot water tank 800 through the constant supply pipe 90.

Here, the hot water pump provided in the hot water recovery pipe 59 may be operated even if the hydro unit (H) is not operated.

In the case of floor heating, water is circulated in the same flow path as in the floor heating shown in FIG. 5.

That is, the water circulated through the second heat exchanger 530 of the hydro unit H is supplied to the floor heating unit via the combustion heating unit 720 of the boiler 700.

However, there is a difference in that the heat source for the floor heating is not the hydro unit (H) but the boiler 700. In addition, even when the hydro unit H is not operated, the floor heating pump 550 may also be operated by bending water circulation, and the boiler pump 730 provided in the boiler 700 may also be operated.

Figure 7 shows the flow of water and refrigerant in different modes of operation of the heat pump 1000 according to the present invention.

In the operation mode illustrated in FIG. 7, similar to the operation mode illustrated in FIG. 3, the temperature To of the outdoor air is higher than the first sub-zero temperature T1 and lower than the first sub-temperature T1. The operation mode in the case is shown.

In the operation mode illustrated in FIG. 3, each of the heat exchanged water with the refrigerant in the second heat exchanger 530 of the hydro unit H is circulated through the heating pipe 610 of the heat dissipation heating unit 600 to heat the floor. In the operation mode illustrated in FIG. 7, floor heating through the floor heating unit is omitted, and provides a heating function through the indoor unit (I).

In the heat pump 1000 according to the present invention, the floor heating and the indoor unit I may be heated by the heat dissipation process, but simultaneously performing the two heating according to the capacity of the compressor may be considered in consideration of the outdoor unit capacity. If so, it may not be enough. Therefore, it is assumed that the operation mode shown in FIG. 7 provides only heating through the indoor unit I, excluding floor heating.

Since the heating of indoor air through the floor heating and the indoor unit (I) uses the phase change of the refrigerant in the overlapping range in the cooling cycle, the hot water supply operation can be separately configured so that the floor heating operation and the heating through the outdoor unit are not operated simultaneously. have.

Therefore, the operation mode shown in FIG. 7 shows a case where the indoor heating is performed through the indoor unit I while providing hot water supply operation while the floor heating is stopped.

Therefore, since the refrigerant compressed by the outdoor unit O and passing through the first heat exchanger 510 of the hydro unit H does not need to pass through the second heat exchanger 530 of the hydro unit H, The second heat exchanger refrigerant control valve 540 provided in the hydro unit (H) allows the refrigerant passing through the first heat exchanger 510 of the hydro unit (H) to be guided to the air-conditioning switching valve 190.

The cooling and heating switching valve 190 guides the refrigerant supplied from the hydro unit (H) to the indoor heat exchanger connection pipe (44), so that it can be supplied from the indoor heat exchanger (320).

In the indoor heat exchanger 320, the heating of the indoor air is performed by the heat obtained during the condensation of the refrigerant, and the condensed refrigerant is provided in the outdoor heat exchanger 140 and the indoor unit I provided in the outdoor unit O. Is supplied to the outdoor heat exchanger 140 through a heat exchanger connection pipe 32 for connecting the indoor heat exchanger 320, and is expanded in the expansion mechanism (210) 310 provided in the heat exchanger connection pipe (32), After the evaporation process in the outdoor heat exchanger 140, by the air conditioning switching valve 190, it is guided to the compressor 210 side.

By such an operation mode, the heating and the hot water supply of the air conditioning space by the indoor unit I may be simultaneously provided.

Of course, when heating is also desired in the floor heating unit, the second heat exchanger refrigerant control valve 540 allows the refrigerant passing through the first heat exchanger 510 to pass through the second heat exchanger 530, thereby providing a floor heating function. It can be provided, but the capacity of the compressor and the like should be considered.

In addition, since the temperature To of the outdoor air is lower than the second temperature T2 of the predetermined image and higher than the predetermined first sub-temperature T1, even if the floor heating is not provided to prevent freezing, It is necessary to continuously circulate water for circulating the unit H and the heat radiating heating unit 600. In addition, the water for circulating the hydro unit (H) and the heat radiating heating unit 600 may be via the boiler, the first boiler valve 740 and the second boiler valve provided in the boiler supply pipe (82). 750 may control the water for circulating the hydro unit (H) and the heat radiating heating unit 600 via the boiler 700, and a boiler pump for pumping the water circulating in the hydro unit (H) ( 730 and / or floor heating pump 550 can be operated.

In addition, when the temperature (To) of the outdoor air is higher than the second temperature (T2) of the predetermined image, there is no risk of freezing prevention of the boiler (700) when the heating by the indoor unit (I) and the floor heating are performed in parallel. It is not necessary to pass water for circulating the hydro unit (H) and the heat radiating heating unit 600 to the boiler 700.

In addition, when the temperature (To) of the outdoor air is higher than the second temperature (T2) of the predetermined image and only the heating by the indoor unit (I) is performed and the floor heating operation is omitted, the circulation of the water circulated for the floor heating is performed. You can stop it.

8 shows a configuration diagram of another embodiment of the heat pump 1000 according to the present invention.

Descriptions duplicated with those described with reference to FIGS. 4 through 7 will be omitted.

The heat pump 1000 according to the present invention is common to the above-described embodiment in that it includes a hydro unit H for heat-exchanging water with the refrigerant supplied from the outdoor unit O for heat dissipation and heating. However, there is a difference in that a hot water supply tank for providing a hot water supply function, as described below, is not provided.

The hydro unit (H) may be provided with a hydro unit heat exchanger (530) for heat exchange between the refrigerant and water. That is, the hydro unit H may be provided with only one hydro unit heat exchanger 530 to perform only floor heating.

The hydro unit heat exchanger 530 is on the hydro unit circulation passage 50 in the outdoor unit O such that the refrigerant discharged from the compressor 120 is used for hot water supply and then condensed, expanded, and evaporated in the outdoor unit O. It is provided.

The hydro unit circulation passage 50 may include a hydro unit supply passage 52 through which a refrigerant of the outdoor unit O, in particular, a refrigerant compressed in the compressor 120 flows to the hydro unit heat exchanger 530, and a hydro unit heat exchanger ( The refrigerant flowing out of the 530 includes the hydro unit recovery passage 54 which flows to the outdoor unit O, in particular, the cooling / heating switching valve 40.

One end of the hydro unit supply passage 52 is connected to the refrigerant control valve 170 provided in the compressor discharge passage 26, and the other end thereof is connected to the hydro unit heat exchanger 530.

One end of the hydro unit recovery passage 54 is connected to the hydro unit heat exchanger 530, and the other end thereof is connected to the compressor discharge passage 26.

When the refrigerant control valve 170 causes the refrigerant to flow into the hydro unit heat exchanger 530, the hydro unit heat exchanger 530 condenses the refrigerant superheated in the compressor 120 while heat-exchanging with water used for heat radiation heating. Is a desuperheater.

The hydro unit heat exchanger 530 has a refrigerant passage through which the superheated refrigerant passes, and a passage through which water used for radiant heating passes.

The hydro unit heat exchanger 530 may be a double tube heat exchanger formed inside and outside with a refrigerant passage and a water passage interposed therebetween. It is also possible.

The heat dissipation heating unit 600 may be a radiator installed in the room or a floor heating pipe for heating the floor.

Heat pump 1000 according to the present invention is a hydro unit heat exchanger 530 and the heat radiation heating unit 600 installed on the floor of the room is connected to the bottom supply pipe 82 and the bottom recovery pipe 83, the bottom recovery pipe ( 83, the floor heating pump 520 is installed.

Hereinafter, for convenience of description, the heat dissipation heating unit 600 installed on the floor of the room is connected to the hydro unit heat exchanger 530 and the bottom supply pipe 82 and the bottom recovery pipe 83, the bottom recovery pipe 83 It will be described that the floor heating pump 520 is installed.

The heat pump 1000 according to the present invention is a means for providing a heat source used for heating or hot water supply, and in addition to the heat pump 1000 described above, a boiler 700 may be further provided.

If the outdoor temperature is below a predetermined temperature, the efficiency of heating using the refrigerant may drop rapidly. Therefore, when outdoor air falls below a predetermined temperature, a heat source for heating may be selectively operated from the heat pump 1000 to the boiler 700.

The boiler 700 may include a combustion heating unit 720 for burning fossil fuel and a heat exchange heating unit 730 for heating in a heat exchange manner using water heated in the combustion heating unit 720. The combustion heating unit 720 heats the water supplied through the bottom supply pipe, and the heat exchange heating unit 730 heat-exchanges the water supplied from the hot water tank side, which will be described later, with the water heated in the combustion heating unit 720. Can be heated.

The bottom supply pipe is provided with a first boiler valve 740 and a second boiler valve 750, respectively. The first boiler valve 740 and the second boiler valve 750 are provided in the bottom supply pipe, and the boiler supply pipe 82 and the boiler recovery pipe 83, which are pipes passing through the boiler 700, are respectively connected. .

The boiler supply pipe 82 and the boiler recovery pipe 83 guide the water circulating in the hydro unit H to pass through the combustion heating unit 720 provided in the boiler 700.

The first boiler valve 740 and the second boiler valve 750 directly supply the water supplied from the hydro unit H to the heat dissipation heating unit, or via the combustion heating unit 720 of the boiler 700. The flow path is selectively shut off so that it is supplied.

As will be described in detail later, if the water supplied from the hydro unit (H) via the boiler 700 is to prevent the freezing of the boiler 700 when the boiler 700 is not operated, It may be the case that the boiler 700 is operated.

Water supplied from the tap water (CW) is via the boiler via pipe 60, via the heat exchange heating unit 730 of the boiler, it can be selectively heated depending on whether the boiler is operating.

Unlike the embodiment illustrated in FIGS. 3 to 7, the heat pump illustrated in FIG. 8 does not have a hot water supply tank, and thus, the hydro unit or the boiler may radiate heat according to the temperature of an outdoor air or an electric charge (gas charge). As a part, hot water can be supplied to the floor heating pipe.

The boiler 700 may provide a hot water supply function by selectively heating water supplied from the tap water through the boiler.

9 is a block diagram related to the priority of the operation according to the hot water supply hot water or the floor heating temperature of the operation mode to perform the hot water supply and the floor heating, using the hot water operation and the floor heating operation of the heat pump 1000 according to the present invention. Illustrated.

The control method related to FIG. 9 assumes a case in which a heat dissipation heating operation and a hot water supply operation are simultaneously performed using a hydro unit of a heat pump having a hot water tank shown in FIGS. 3 to 7.

9 illustrates a case in which the hot water pump operation and the floor heating operation are performed using the heat pump 1000.

Then, it is assumed that the temperature of the hot water supply of hot water is increased faster than the floor heating temperature when the hot water operation and the floor heating function are performed by the hydro unit H constituting the heat pump 1000. This is because the refrigerant compressed in the compressor is first supplied to the first heat exchanger for hot water supply of the hydro unit H, and the refrigerant via the first heat exchanger is supplied to the second heat exchanger for floor heating.

Hot water supply operation and floor heating operation use the heat provided in the condensation process of the compressed refrigerant, but the user who has operated hot water operation and floor heating operation at the same time has a predetermined temperature between hot water supply temperature and floor heating temperature. It can be expected to reach the temperature quickly.

In addition, when the user operates the hot water supply operation and the floor heating operation at the same time (S10), the temperature of the hot water supply of the hot water and the floor heating temperature may be increased together through the hydro unit H.

If it is determined that the temperature of the hot water supply of hot water does not reach the predetermined hot water temperature (Tm) even after a predetermined time elapses (S20), the floor heating operation is not waited for the temperature of the hot water supply of water to rise gradually. After a while, the hydro unit (H) can concentrate the heating capacity to increase the temperature of the hot water supply. Therefore, only hot water operation is activated and the floor heating operation is stopped for a while (S40).

If it is determined that the temperature of the hot water supply hot water reaches the predetermined hot water temperature Tm after the predetermined time elapses (S20) (S50), the hot water heating operation and the floor heating operation may be started again (S60).

Then, in a state in which both the hot water supply operation and the floor heating operation are performed, when the temperature of the hot water supply hot water reaches a predetermined temperature Ta (S70), the hot water supply operation is stopped (S80), and the floor heating temperature is a predetermined temperature ( When Tb) is reached, the operation of the floor heating operation is stopped (S100).

Then, when the predetermined time has elapsed (S110), since the temperature of the hot water supply and the floor heating temperature will be lowered, it may be returned to the step S10 to start the hot water supply operation and the bottom heating operation again.

Therefore, the user can use hot water operation and floor heating operation at the same time by using the heat pump 1000 according to the present invention, and can quickly increase the temperature of the hot water supply of hot water in response to the needs of the user.

10 shows one embodiment of a control method of the heat pump 1000 according to the present invention.

The environment in which the heat pump 1000 according to the present invention is used is based on the premise that an intelligent power grid can be used.

The present invention relates to a control method of a heat pump including a hydro unit and a boiler for heat exchange between water and a refrigerant, the control variable collecting step of collecting control variables of the heat pump and the control information collected in the control variable collecting step. It provides a control method of a heat pump comprising an operation mode determination step of determining the operation mode of the furnace heat pump, and a heat pump operation step of operating the heat pump according to the operation mode determined in the operation mode determination step.

The control variable collected in the control variable collection step may include at least one or more of the temperature of the outdoor air, the electric charge for the unit calorie, the gas charge for the unit calorie and whether the boiler or the hydro unit is broken. As described above, the information related to the electric charge for the unit calorie of the control variables collected in the control variable collection step may be provided from the energy management device of the intelligent power grid.

Hereinafter, the control method of the heat pump according to the present invention will be described in detail.

As described above, the energy management device (EMS) may directly control each electric device, or may provide only information related to electric charges to each electric product, and the control unit of each electric product may provide the charge information. You can also control each electrical appliance.

Therefore, the energy management device 30 (FIG. 2) of the intelligent power grid receives charge information according to unit calories, compares an electricity rate per unit calorie and gas rate per unit calorie, and compares the rates of the outdoor unit, the hydro unit, and the boiler. The control signal may be transmitted to the controller, and the gas fee per unit calorie may be input and stored in the energy management apparatus or the controller.

In this way, the control unit or the energy management device can selectively operate the hydro unit or the boiler to minimize the charge for the same amount of heat.

The energy management device E provided in each home receives time-related electricity rate information and / or gas rate information from the intelligent power grid, and the information related to electricity rate and / or gas rate per unit calorie is provided to the present invention. It may be provided to the control unit of the heat pump 1000 according to, or directly control the heat pump 1000 according to the present invention.

The energy management apparatus E may include a display unit for displaying electric power information and / or external environmental information, an input unit for user manipulation, a communication unit for transmitting and receiving information with an external device, and a clock control unit. Information related to the operation mode or the fee that the user selectively inputs may be stored.

Therefore, when the gas rate per unit calorie is not a variable price but a fixed rate, the user may directly enter the gas rate directly through the input unit of the energy management apparatus E.

The control unit of the heat pump or the hydro unit according to the present invention may store a plurality of operation modes to control the user to operate in any one of the plurality of operation modes.

The plurality of operation modes may include a minimum plan operation mode.

As shown in FIG. 10, when the user starts operation of the hot water supply operation and / or the floor heating function (S100), the temperature of the outdoor air collected in the control variable collection step, the electric charge for the unit calorie, and the unit calorie By using the information about the gas rate and the failure of the boiler or the hydro unit, the control unit of the energy management device or the control unit of the heat pump, the heat pump 1000 is operated in the minimum plan operation mode according to the user's selection or setting Determine (S200).

If it is determined that the operation mode of the heat pump 1000 is the minimum plan operation mode, the controller of the energy management apparatus or the control unit of the heat pump may compare the electricity rate per unit calorie and gas rate per unit calorie (S300).

If it is determined that the electric charge per unit calorie is cheaper than the gas rate per unit calorie (S400), and the operation mode determination step is completed, the operation mode determination step subdivided as follows is performed.

The controller of the energy management device or the controller of the heat pump provides a hot water supply or heating function through the hydro unit H constituting the heat pump 1000 without operating the boiler (S500).

In this case, when it is determined that the gas rate per unit calories is lower than the electricity rate per unit calories (S400), the control unit of the energy management device (E) stops the operation of the hydro unit (H), and operates the boiler 700 Provides hot water supply or heating function (S600).

In addition, when the user does not select the minimum plan operation mode according to the user's selection or setting to operate the hydro unit (H) or boiler 700 to provide a heating or hot water operation (S700).

The control variable collection step may be repeated at a predetermined interval. Therefore, when the user selects the minimum plan operation mode, since the electric charge per unit calories may be changed at a predetermined time interval, when the predetermined time elapses (S900), the electric power fee per unit calories and the gas rate per unit calories are returned. The process of comparing (S300) may be repeated.

If the magnitude of the electric charge for the unit calorie and the gas charge for the unit calorie changes during the operation of any one of the boiler 700 or the hydro unit H, the control unit or the energy management device is in operation. One operation can be stopped and the other can be driven.

The operation mode determination step may determine an operation mode such that the hydro unit or the boiler is operated to minimize the charge for the same heat quantity, the operation mode determination step is unit calories of the operation of any one of the boiler or the hydro unit. When the magnitude of the electric charge and the gas charge for the unit calorie is changed, the control unit or the energy management device may stop the operation of any one of the operation, and determine the operation mode to operate the other.

In this manner, the heat pump according to the present invention can be operated in the minimum plan operation mode.

When the user does not select the minimum plan operation mode when operating the hydro unit (H) or boiler 700 according to the user's selection or setting to provide heating or hot water operation (S700), energy management device or heat pump As described above, the control unit may operate the hydro unit H or the heat pump 1000 according to the temperature (To) range of the outdoor air.

As described above, the hydro unit (H) constituting the heat pump has a characteristic that the efficiency rapidly decreases as the temperature (To) of the outdoor air is lowered.

Therefore, when the user selects heating and / or hot water supply operation, whether to operate the hydro unit H or the boiler 700 constituting the heat pump 1000 is determined in addition to the rate per unit calorie. (To) can be used as a judgment variable. For example, when the temperature of the outdoor air is equal to or less than the first sub-zero temperature set in advance, the controller or the energy management device stops the operation of the hydro unit even when the electric charge for unit heat is low. Driving is sometimes advantageous.

In addition, the user may want to operate the heating or hot water supply, and even considering the efficiency of the hydro unit H, the user may not want to increase the cost for heating or hot water operation excessively.

Therefore, it is possible to select the upper limit plan operation mode that is different from the minimum plan control associated with the operation mode shown in FIG.

That is, the upper limit operation mode refers to an operation mode that does not exceed the upper limit of the rate determined by the user together with the gas rate per unit calorie or electricity rate per unit calorie and the efficiency of the hydro unit H.

FIG. 11 is a block diagram of an upper limit plan operation mode as a control method of the heat pump 1000 according to the present invention.

When the user starts operation of the hot water supply operation and / or the floor heating function (S1000), the control unit of the energy management device (E) whether the heat pump 1000 is operated in the upper limit plan operation mode according to the user's selection or setting Determine (S2000).

If it is determined that the operation mode of the heat pump 1000 is the upper limit plan operation mode, first, the energy management device or the control unit of the heat pump determines whether an electric charge per unit calorie exceeds a user-set maximum rate (S3200). In this case, the gas rate per unit calorie is assumed to be a constant value lower than the user-set maximum rate, or even lower than the user-set maximum rate even if it is variable.

When it is determined that the electric charge per unit calorie is higher than the user-set maximum rate, the boiler is operated in a state in which the operation of the hydro unit is stopped for heating or hot water supply (S4200).

That is, when the user sets the maximum rate for the unit calories, the controller or the energy management device compares the electricity rate for the unit calories and the gas rate for the unit calories with the maximum rate for the unit calories set by the user. The controller may operate the boiler only in a section in which the electric charge for the unit calories is higher than the maximum rate for the unit calories set by the user.

On the other hand, when it is determined that the electric charge per unit calorie is cheaper than the user-set maximum rate, the temperature To of the outdoor air is compared with the first temperature T1 of the predetermined image (S4300).

In addition, the control unit or the energy management device compares the electric charge for the unit calories and the gas rate for the unit calories with the maximum rate for the unit calories set by the user, the electric charge for the unit calories set by the user Even if it is lower than the maximum rate for the unit calorie, when the temperature of the outdoor air is equal to or less than the first preset temperature T1, the controller may operate the hydro unit.

In this case, when the temperature To of the outdoor air is lower than the predetermined first sub-zero temperature T1, the efficiency of the hydro unit H drops rapidly even though the electric charge per unit calorie is lower than the user-set maximum price. Because it stops the operation of the hydro unit (H) and operates the boiler 700 (S4200). In the case of operating the boiler 700, the heating water for heating the floor naturally passes through the boiler 700 (S7300).

On the other hand, when the temperature (To) of the outdoor air is higher than the predetermined first sub-zero temperature (T1) and the electric charge per unit calorie is lower than the user-set maximum rate, the hydro unit (H) is used for heating and hot water operation. To perform, the operation of the boiler 700 may be stopped (S5300).

In this case, the control unit of the energy management apparatus or the heat pump compares the temperature To of the outdoor air with the second temperature T2 of the predetermined image (S6200) and the second temperature of the image of which the temperature To of the outdoor air is predetermined. If it is lower than T2, the water circulating the hydro unit H and the floor heating unit for floor heating to prevent freezing of the boiler 700 even though the boiler 700 is not operated (called 'floor heating water'). This is via the boiler 700 (S7500).

However, when the temperature To of the outdoor air is higher than the second temperature T2 of the predetermined image, there is no risk of freezing of the boiler 700, so that the floor circulating the hydro unit H and the floor heating unit for floor heating. For heating does not need to pass through the boiler 700 (S7400).

If the control unit of the energy management device or the heat pump does not select the upper limit plan operation mode, the control unit of the energy management device E may charge the gas rate per unit calorie and the electricity rate per unit calorie. Compared to (S3100), the gas rate per unit calories is more expensive than the electricity rate per unit calories, the temperature (To) of the outdoor air is compared to the predetermined first sub-zero temperature (T1) (S4100) to determine the temperature of the outdoor air ( When To) is higher than the predetermined first sub-zero temperature T1, the operation of the boiler 700 is stopped and the hydro unit H is operated (S5100).

On the other hand, when the temperature To of the outdoor air is compared with the first sub-zero temperature T1 predetermined (S4100), when the temperature To of the outdoor air is lower than the first temperature T1 below the predetermined zero temperature, the unit heat quantity. Even if the gas fee is higher than the electric charge, the efficiency of the hydro unit H is lowered. Therefore, the operation of the hydro unit H is stopped and the boiler 700 is operated (S4200).

Then, when the temperature To of the outdoor air is compared with the second temperature T2 of the predetermined image (S6100), when the temperature To of the outdoor air is lower than the second temperature T2 of the predetermined image, the boiler Even though the 700 is not operated, water circulating the hydro unit H and the floor heating unit for the floor heating is prevented through the boiler 700 in order to prevent freezing of the boiler 700 (S7100). However, when the temperature (To) of the outdoor air is higher than the second temperature (T2) of the predetermined image, there is no risk of freezing of the boiler 700, so that water circulating the hydro unit (H) and the floor heating unit for floor heating It is not necessary to pass through the boiler 700 (S7200). And, although not shown, if the control unit or the energy management device is determined that any one of the hydro unit and the boiler is broken, the other one that can be operated regardless of the temperature of the outdoor air or the charge for the unit calorie operation You can.

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims. . It is therefore to be understood that the modified embodiments are included in the technical scope of the present invention if they basically include elements of the claims of the present invention.

Heat Pump: 1000 Hydro Unit: H
Outdoor unit: O boiler: 700
Heat dissipation heating part: 600

Claims (23)

An outdoor unit compressing the refrigerant;
Hydro unit for heat-exchanging the compressed refrigerant and water;
A boiler for selectively heating water circulating in the hydro unit;
A radiant heating unit for heating by water heated in the hydro unit or the boiler;
And a controller configured to control the outdoor unit, the hydro unit, and the boiler according to a temperature of outdoor air or a charge for unit heat. The method of claim 1,
The control unit receives charge information according to unit calories from an energy management device of an intelligent power grid, and compares an electricity rate per unit calorie and gas rate per unit calorie to selectively operate the boiler or the hydro unit. Pump. The method of claim 1,
The energy management device of the intelligent power grid receives charge information according to unit calories, compares an electricity rate per unit calorie and gas rate per unit calorie, and transmits control signals of the outdoor unit, the hydro unit, and the boiler to the controller. Heat pump, characterized in that. The method according to claim 2 or 3,
The electric charge per unit calorie is characterized in that for updating at a predetermined interval. The method according to claim 2 or 3,
The gas charge per unit calorie is input to the energy management device or the control unit. The method according to claim 2 or 3,
The control unit or the energy management device heat pump characterized in that for selectively operating the hydro unit or the boiler to minimize the charge for the same amount of heat. The method of claim 6,
When the magnitude of the electricity rate per unit calorie and gas rate per unit calorie is changed during the operation of any one of the boiler or the hydro unit, the controller or the energy management device stops any one operation, and the other Heat pump, characterized in that for driving one. The method of claim 7, wherein
When the temperature of the outdoor air is equal to or less than a first sub-zero temperature, the controller or the energy management device stops the operation of the boiler and operates the hydro unit even when the electric charge per unit calorie is low. Heat pump. The method according to claim 2 or 3,
When the temperature of the outdoor air is equal to or less than a predetermined first sub-zero temperature, the controller or the energy management device stops the operation of the hydro unit and operates the boiler, and the temperature of the outdoor air is equal to or greater than the predetermined first sub-zero temperature. If the heat pump, characterized in that to stop the operation of the boiler to operate the hydro unit. The method according to claim 2 or 3,
When the user sets the maximum rate for unit calories, the control unit or the energy management device compares the electricity rate per unit calories and gas rate per unit calorie with the maximum rate for unit calories set by the user, and the control unit The heat pump is characterized in that for operating the boiler only in a section in which the electric charge per unit heat is higher than the maximum rate for the unit heat set by the user. The method of claim 10,
The control unit or the energy management device compares the electric charge per unit calorie and gas charge per unit calorie with the highest rate for the unit calorie set by the user, and the electricity rate per unit calorie is the highest for the unit calorie set by the user. Even if lower than the charge, the heat pump, characterized in that the control unit operates the hydro unit when the temperature of the outdoor air is less than the first predetermined temperature. The method of claim 1,
The control unit is connected to the energy management device of the intelligent power grid, the control unit is provided in the hydro unit, the hydro unit is connected to the outdoor unit, the hydro unit and the boiler so as to communicate with the heat pump. The method of claim 1,
And a hot water tank for heating and storing the water supplied from the tap water by the water heat-exchanged with the refrigerant in the hydro unit, or storing the water supplied from the tap water after heating by the boiler. The method of claim 6,
When the temperature of the outdoor air is more than the first temperature below the predetermined sub-zero temperature or less than the second temperature of the predetermined image, the water circulating the heat radiating heating unit after heat exchange with the refrigerant in the hydro unit passes through the boiler. . The method of claim 14,
The boiler is a heat pump, characterized in that only the pump provided in the boiler is operated without the combustion process of the gas. The method of claim 6,
When the temperature of the outdoor air is more than the second temperature of the predetermined image, the water circulating the heat radiating heating unit after the heat exchange with the refrigerant in the hydro unit does not pass through the boiler. The method according to claim 2 or 3,
The control unit or the energy management device, if it is determined that any one of the hydro unit and the boiler, the heat pump, characterized in that for operating the other one that can be operated irrespective of the charge for the temperature or unit heat of the outdoor air. In the control method of a heat pump having a hydro unit and a boiler for heat exchange of water and refrigerant,
A control variable collection step of collecting control variables of the heat pump;
An operation mode determination step of determining an operation mode of the heat pump based on the control information collected in the control variable collection step; And,
And a heat pump operating step of operating the heat pump according to the operation mode determined in the operation mode determination step. The method of claim 18,
The control variable collected in the control variable collection step is a heat pump comprising at least one of the temperature of the outdoor air, the electricity bill for the unit calorie, the gas bill for the unit calorie and whether the boiler or hydro unit is broken. Control method. The method of claim 18,
The control method of the heat pump, characterized in that the information related to the electric charge for the unit heat of the control variables collected in the control variable collection step is provided from the energy management device of the intelligent power grid. The method of claim 18,
The control variable collection step of the heat pump control method characterized in that it is repeated at a predetermined interval. The method of claim 18,
The operation mode determination step of the heat pump control method characterized in that for determining the operation mode so that the hydro unit or the boiler is operated so that the charge for the same amount of heat is minimized. The method of claim 22,
In the operation mode determining step, when the magnitude of the electricity rate per unit calorie and gas rate per unit calorie is changed during the operation of any one of the boiler or the hydro unit, the controller or the energy management device is in operation. The operation method of the heat pump, characterized in that to stop the operation, and determine the operation mode so that the other one is operated.

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