KR20040065450A - Heating, cooling and hot water supply system with heat pump - Google Patents

Abstract

PURPOSE: A cooling and heating, and hot water supply system having a heat pump is provided to complement a heating load and supply a large quantity of hot water in the case of a cooling operation. CONSTITUTION: A freezer(1) forms a refrigerating cycle by connecting a compressor(11), a condenser(12), an expansion valve(13), and an evaporator(14) in order. A heat pump(2) forms a cooling and heating cycle by connecting a compressor(21), an overheat heat exchanger(22), a four-way control valve(23), a main heat exchanger(24), a bidirectional expansion valve(25), and an auxiliary heat exchanger(26) in order. A hot water supply element(3) stores and supplies hot water of a high temperature obtained by heat exchange with the condenser of the freezer and the overheat heat exchanger. A heating medium circulating element(4) stores and circulates a heating medium of a low temperature or high temperature obtained by heat exchange with the main heat exchanger of the heat pump to use the heating medium for cooling and heating.

Description

Heating, Heating, and Hot Water Systems with Heat Pumps {HEATING, COOLING AND HOT WATER SUPPLY SYSTEM WITH HEAT PUMP}

The present invention relates to a heating and heating system and a hot water supply system, and in particular, when operating a heat pump capable of heating and heating, the heating load is compensated for when a large amount of hot water is instantaneously required in winter or when heating load is generated for floor heating at midnight. In order to provide a refrigerator having a capacity of less than the standard heating load to cope with the maximum heating load in a short time by the condenser of the refrigerator, the hot water generated during the cooling operation by the heat pump in summer In order to achieve high cooling and heating efficiency regardless of the outside temperature during the operation of the refrigerator and the heat pump, the heating and cooling and hot water supply with a heat pump that uses heat or ground heat as a heat source heat exchanged by an evaporator and an auxiliary heat exchanger. It's about the system.

In general, most homes in Korea, where the ondol culture is developed, operate floor heating or hot water supply by operating a boiler in winter, air-conditioning by air conditioner in summer, and hot water using a boiler or a separate heat source as needed.

As mentioned above, since a boiler and an air conditioner or a separate heat source are used as cooling and heating means in winter and summer, it is expensive to equip a large number of systems at home, and when all the heating and heating means are installed, There is a problem in that the capacity of the entire system increases because of the system configuration.

In addition, when heating using only a heat pump, the auxiliary heating means for heating hot water in a hot water tank such as a separate electric heater or burner is not possible because only the heat energy generated from the condenser cannot support the heating load for heating and hot water supply. Since it must be added, the configuration is complicated by the inclusion of a plurality of configurations, there was an inconvenience such as the operation and control must be made for each configuration.

The present invention was devised to solve the above problems, and an object of the present invention is the lack of hot water supply or heating when a large amount of hot water is required instantaneously during the hot water supply and heating and cooling operation by a heat pump or when the maximum heating load in winter is required. In order to supplement the load, a system is formed by adding a general freezer, and a heat storage tank is provided so that the sensible heat of the hot water and the heat medium circulating the system can be used to use the hot water load or the heating load. In order to obtain high efficiency irrespective of the condition of outside air, it is to provide a hot water supply and heating / heating system to heat exchange by connecting a thermostat such as groundwater or geothermal heat to an evaporator of a refrigerator and an auxiliary heat exchanger of a heat pump.

1 is a system schematic diagram of a cooling and heating and hot water supply system having a heat pump according to the present invention;

2 is a system schematic diagram showing a connection state during hot water supply operation of a heating and cooling system with a heat pump according to the present invention;

Figure 3 is a system schematic diagram showing a connection state during hot water supply and heating operation of the heating and heating system with a heat pump according to the present invention,

Figure 4 is a system schematic diagram showing a connection state during the hot water supply and cooling operation of the heating and cooling system with a heat pump according to the present invention.

Explanation of symbols on the main parts of the drawings

1: freezer 2: heat pump

3: hot water supply means 4: heat medium circulation means

5: heating and cooling load 11, 21: compressor

12: condenser 13: expansion valve

14: evaporator 22: superheat heat exchanger

23: four-way control valve 24: main heat exchanger

25: bidirectional expansion valve 26: auxiliary heat exchanger

30: water supply unit 31: hot water tank

32: hot water pump 33, 36, 48: check valve

34: hot water supply electronic valve 35: bypass electronic valve

37: hot water auxiliary heat exchanger 38: hot water supply valve

39: hot water pipe 40: bypass pipe

41: heat medium tank 42: heat medium pump

43: fan coil unit 44: branch pipe

45: bottom coil 46: heating and cooling load pump

47,47 ': On-off valve 49: Heat pipe

50: heating and cooling piping 60: geothermal / ground water piping

An object of the present invention as described above, the compressor, condenser, expansion valve and the evaporator sequentially connected to form a refrigeration cycle; A heat pump in which a compressor, a superheat heat exchanger, a four-way control valve, a main heat exchanger, a bidirectional expansion valve, and an auxiliary heat exchanger are sequentially connected to form a cooling and heating cycle; Hot water supply means for storing and supplying hot water obtained by heat exchange with a condenser of said refrigerator and an overheated heat exchanger of said heat pump; And a heat medium circulating means for storing and circulating the low or high temperature heat medium obtained by heat exchange with the main heat exchanger of the heat pump for use in cooling and heating. Is achieved.

Preferably, the evaporator of the refrigerator and the auxiliary heat exchanger of the heat pump are achieved by a cooling and heating and hot water supply system having a heat pump, characterized in that heat exchange is performed by groundwater or geothermal heat.

More preferably, the hot water supply means, a hot water pump for circulating hot water to provide hot water; A tap water supply unit installed just before the hot water pump and provided with a check valve to replenish tap water as much as hot water consumption amount; A hot water tank for storing hot water heated by heat exchange with the condenser and the superheater heat exchanger; And a hot water valve connected to the hot water tank to discharge hot water at high temperature, wherein the heat medium circulation means comprises: a heat medium pump for circulating the heat medium for cooling and heating; A heat medium tank for storing a heat medium heated or cooled by heat exchange with the main heat exchanger; And a heating / cooling load pump connected to the heating medium tank to circulate the heating medium having a high temperature or low temperature to the heating / cooling load portion.

In addition, a branch pipe is formed at an outlet side of the air-conditioning load pump and an inlet side of the heat medium tank to branch the fan coil unit and the bottom coil, and an on / off valve is provided at the inlet side of the fan coil unit and the bottom coil, respectively. It is achieved by a cooling and heating and hot water supply system having a heat pump, characterized in that the cooling and cooling of the room is made through a selective operation.

In addition, a bypass pipe is connected to the hot water pipe connected to the outlet side of the condenser of the hot water supply means and the outlet side of the superheat exchanger, and the hot water supply electronic valve and the bypass pipe are respectively connected to the hot water pipe and the bypass pipe branched from the condenser outlet side. A pass electron valve is formed, and a hot water auxiliary heat exchanger is provided at the outlet heat pipe of the main heat exchanger and the bypass pipe of the condenser outlet to maintain the heating load required for heating with respect to the heat energy absorbed from the main heat exchanger of the heat pump. And the hot water supply electronic valve and the bypass electron valve are opened and closed by a temperature sensed by a temperature sensor installed in the hot water tank and the heat medium tank. And a hot water supply system.

Hereinafter, an embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

1 is a system schematic diagram of a heating / cooling and hot water supply system having a heat pump according to the present invention, and a condenser 12 and the condenser 12 of the refrigerator 1 in a state where a conventional refrigerator 1 and a heat pump 2 are provided. In order to perform hot water supply and cooling and heating using heat absorbed from the main heat exchanger 24 of the heat pump 2, the hot water supply means 3, the heat medium circulation means 4, and the heating / cooling load part 5 are provided with the freezer 1. Is connected to the heat pump (2), and the geothermal or ground water of constant temperature is connected to the heat exchange means of the evaporator (14) of the refrigerator (1) and the auxiliary heat exchanger (26) of the heat pump (2). Is shown.

First, the configuration of the heat pump (2) for performing hot water supply and cooling and heating, the heat pump (2) is a compressor for compressing the refrigerant to a state of high temperature and high pressure to discharge the same as a normal heat pump (21); Four-way control valve 25 for determining the flow direction of the refrigerant in order to determine the cooling operation or heating operation of the heat pump (2); A main heat exchanger 24 for performing heat exchange with a heat medium circulating in the cooling and heating load part 5 while performing a role of an evaporator in a cooling operation and a role of a condenser in a heating operation; A bidirectional expansion valve 25 for throttling and expanding the refrigerant circulating in the pipe of the heat pump 2 to drastically reduce the pressure; And an auxiliary heat exchanger 26 for performing heat exchange with groundwater or geothermal heat while performing a role of a condenser in a cooling operation and a role of an evaporator in a heating operation, each of which constitutes the heat pump 2. The components are connected in the above-described order to form a heating and cooling cycle, and in particular, a superheat heat exchanger (22) for replenishing the hot water load is added to the compressor (21) outlet side of the heat pump (2).

Referring to the configuration of the refrigerator (1) added to supplement the hot water load and the heating load of the heat pump (2), the refrigerator (1) is also the same as the conventional refrigerator (1) compressor (11); Condenser 12; The expansion valve 13 and the evaporator 14, each of the components are connected in the order described above to form a refrigeration cycle.

As described above, the ground heat / ground water is formed in the evaporator 14 of the refrigerator 1 and the subsidiary heat exchanger 26 of the heat pump 2 so as to exchange heat with ground water or ground heat which is kept at about 15 ° C. The pipe 60 is connected. In the heat exchange of the evaporator 14 and the subsidiary heat exchanger 26, the use of ground water or geothermal heat is required to maintain constant heating and cooling and hot water supply performance depending on the change in temperature and humidity of the outdoor air in the summer or winter. To this end, the performance of the system is kept constant when heat exchange is performed on the evaporator 14 and the subsidiary heat exchanger 26 using ground water or geothermal heat, which is a constant heat source, so the optimum operation conditions are set to operate the system as a whole. It can improve performance.

Hot water supply means for storing and supplying hot water obtained by heat exchange between the condenser 12 of the refrigerator 1 and the superheat heat exchanger 22 of the heat pump 2 for use in a kitchen or a bathroom 3 Referring to the configuration of the), the hot water supply means (3) is installed just before the condenser (12) hot water pump (32) for circulating hot water for hot water supply; A water supply unit 30 installed just before the hot water pump 32 and provided with a water supply connection part (not shown) and a check valve 33 to replenish the water supply by the amount of hot water consumption; A hot water tank (31) in which hot water for storing hot water heated while passing through the condenser (12) and the superheat exchanger (22) or for recirculating the hot water whose temperature is lowered to the condenser (12) is stored; A hot water valve 38 connected to the hot water tank 31 for discharging hot water at high temperature; And a hot water pipe 39 for circulating or supplying hot water by connecting the above configuration.

On the other hand, in order to compensate for the insufficient heating load for the maximum heating load during the heating operation by the heat pump (2) to the outlet side of the condenser 12 and the outlet side hot water pipe (39) of the superheat exchanger (22). The bypass pipe 40 is connected, and between the heat medium pipe 49 connected to the outlet side of the main heat exchanger 24 and the hot water or heat medium passing through the bypass pipe 40 branched from the outlet side of the condenser 12. A heat exchanger 37 is provided to maintain and supplement the heating load required when the heat exchange is performed at the heat exchanger, and a check valve 36 for preventing a reverse flow of hot water is provided at the outlet side of the hot water assisted heat exchanger 37. The hot water supply supply valve 34 and the bypass electron valve 35 are respectively formed to selectively control the flow direction of the hot water to the hot water pipe 39 and the bypass pipe 40 branched from the outlet side of the condenser 12. ) Is formed The.

Here, the hot water supply electron valve 34 and the bypass electron valve 35 are automatically opened and closed by the temperature sensed by the temperature sensor (not shown) installed in the hot water tank 31 and the heat medium tank 41.

The fan coil unit 43 or the bottom coil 45 (ondol) installed in the room with a low or high temperature heat medium obtained by heat exchange with the main heat exchanger 24 of the heat pump 2 or the condenser 12 of the refrigerator 1. Referring to the configuration of the heat medium circulation means (4) for storing and circulating it for use in cooling and heating by), the heat medium circulation means (4), the heat medium pump for circulating the heat medium for cooling and heating (42); A heat medium tank 41 for storing a heat medium heated or cooled by heat exchange between the superheat heat exchanger 22 and the main heat exchanger 24; And a heating and cooling load pump 46 connected to the heating medium tank 41 by a heating and cooling pipe 50 to circulate the heating medium having a high temperature or low temperature to the heating and cooling load part 5.

The heating and cooling loads to be handled through the cooling and heating loads 5 are heat capacities required to maintain a constant temperature condition of a room at a set value, and are heated by heat exchange with the main heat exchanger 24 or the condenser 12. The heating medium is circulated to the fan coil unit 43 or the bottom coil 45 installed indoors to generate cold or warm air by heat exchange with the indoor air, or to heat the floor by heating the floor by conduction heat transfer with the indoor floor. By doing so, the air-conditioning load can be handled.

In general, since the operation of the fan coil unit 43 or the bottom coil 45 is made separately, the heat medium circulation to the cooling / heating load unit 5 may set the flow direction for a plurality of paths to perform cooling and heating. Can be.

As shown in the drawing, an example of installation of a cooling and heating pipe 50 for individually driving the fan coil unit 43 and the bottom coil 45 is as follows. The fan coil unit 43 and the bottom coil 45 are formed by forming branch pipes 44 on the cooling and heating pipes 50 extending to the outlet side of the cooling and heating load pump 46 and the inlet side of the heat medium tank 41. Branch), and opening and closing valves 47 and 47 'are formed at the inlet side of the fan coil unit 43 and the bottom coil 45 so as to selectively manipulate the flow direction of the heat medium. Fan coil unit 43 and the bottom coil 45 for cooling and heating are formed at the end of the branch pipe 44 or the air-conditioning pipe 50. Here, the branch pipe 44 and the air-conditioning pipe extending from the outlet side of the fan coil unit 43 and the bottom coil 45 and immediately before joining the inlet-side air-conditioning piping 50 of the heat medium tank 41 ( 50, preferably, check valves 48 and 48 are formed to prevent reverse flow of the heat medium. The fan coil unit 43 or the bottom coil 45 formed in the branch pipe 44 or the air-conditioning pipe 50 may be connected in parallel or in series to be installed in a plurality of places, and the fan coil The unit 43 may be installed and implemented in various forms, such as a general type or an upright type, depending on the installation place.

FIG. 2 is a system schematic diagram illustrating a connection state during hot water supply operation of an air conditioning and hot water supply system having a heat pump according to the present invention, and a refrigerator 1 to compensate for insufficient hot water load for hot water operation of the heat pump 2. The hot water pipe 39 is shown connected to the heat exchanger with the condenser 12 of the.

Normally, a hot water supply load below a certain level can be handled by the operation of the heat pump system, but when a large amount of hot water is used in the kitchen and bathroom in the morning or evening time (at the time of maximum hot water load), the heat pump 2 You will not be able to handle the hot water load alone.

In this case, it is necessary to configure the system to receive the hot water load from the condenser 12 by the operation of the refrigerator 1 to bear the maximum hot water load.

To this end, the hot water supply system for hot water operation in the heating and heating system with a heat pump according to the present invention may be configured as shown in FIG.

The hot water supply system is a condenser 12 and the heat pump (1) of the freezer (1) by connecting the freezer (1), the heat pump (2) and the hot water supply means (3) to the hot water pipe (39) shown in FIG. Hot water heated by the superheat heat exchanger 22 of 2) is stored or taken out to perform hot water supply.

Here, the refrigerator 1 and the heat pump 2 are installed in separate states, and the evaporator 14 of the refrigerator 1 and the auxiliary heat exchanger 26 of the heat pump 2 are groundwater. Or geothermal heat / underground water pipe 60 is connected to the heat exchange as the geothermal heat, the water condenser 12 of the refrigerator 1 and the superheat heat exchanger 22 of the heat pump 2 while the tap water and hot water The hot water pipe 39 is connected to be heated.

Normally describing the operation of the hot water supply system, the hot water pipe in which the hot water stored in the hot water tank 31 and the hot water supplied from the water supply unit 30 forms the hot water supply means 3 by the hot water pump 32. Circulated to (39), the hot water is fed to the superheat exchanger (22) of the heat pump (2) past the condenser (12) of the freezer (1), where operation is stopped, at which time the outlet of the freezer (1) is discharged. The bypass electron valve 35 of the bypass pipe 40 branched from the hot water pipe 39 formed at the side is blocked, and the hot water supply electron valve 34 is opened to flow into the superheater 22.

The hot water is heat-exchanged and heated by a high temperature and high pressure refrigerant passing through the superheat heat exchanger 22 formed at the outlet side of the compressor 21 regardless of cooling or heating operation of the heat pump 2, and the superheat heat exchanger The hot water passing through the (22) is stored in the hot water supply tank 31 is supplied to the hot water supply valve 38 of the kitchen or bathroom through a pipe connected to one side, the hot water is made, and drawn out from the hot water tank (31) Hot water is replenished through the tap water supply unit 30.

Referring to the operation of the hot water supply system when a large amount of hot water or hot water supply is used, the use of hot water in the bathroom and kitchen temporarily increases in the morning or evening, when the superheat heat exchanger 22 of the heat pump 2 It is heated by only the hot water stored in the hot water tank 31 does not provide a smooth supply of hot water. Therefore, in most cases, an auxiliary heater or the like is installed and used in the hot water supply tank 31. This is because the temperature distribution in the hot water tank 31 is not distributed evenly within a short time, and a high temperature is formed only around the auxiliary heater. When hot water is drawn out through the hot water supply valve 38, cold hot water may be discharged, which is not suitable as hot water. Therefore, it is necessary to store hot water that already has a uniform temperature distribution when stored in the hot water tank 31.

In the hot water supply system according to the present invention, the hot water supply tank 31 is operated by adding a refrigerator 1 having a capacity smaller than that of the heat pump 2 to the hot water supply system using the heat pump 2. The hot water or tap water introduced from the tap water supply unit 30 is supplied by the hot water pump 32 so that it is primarily heated while passing through the condenser 12 of the refrigerator 1, and the overheating of the heat pump 2 is performed. The hot water supply system is configured to supplement the insufficient hot water load with respect to the maximum hot water load when operated only by the heat pump 2 by allowing the second heat to pass through the heat exchanger 22.

The hot water supplied from the hot water supply tank 31 and the tap water introduced from the tap water supply unit 30 are primarily heated while passing through the condenser 12 of the refrigerator 1 to be introduced into the superheat heat exchanger 22. At this time, the bypass electron valve 35 formed in the bypass pipe 40 is blocked, and the hot water supply electron valve 34 formed in the hot water pipe 39 is opened to determine the flow path of the hot water.

The hot water is heat-exchanged by the high-temperature high-pressure refrigerant passing through the superheat heat exchanger 22 of the heat pump 2 and heated secondly, and the hot water passed through the superheat heat exchanger 22 is supplied to the hot water supply tank 31. The hot water is stored and supplied to the hot water supply valve 38 of the kitchen or the bathroom through a pipe connected to one side, and hot water drawn out from the hot water tank 31 is replenished through the water supply supply unit 30.

On the other hand, when the hot water load of the hot water supply system is sufficient while the refrigerator 1 and the heat pump 2 are operated together, and the heat pump 2 is stopped, the bypass electromagnetic valve 35 is opened. The hot water supply electronic valve 34 is blocked so that the hot water in the hot water pipe 39 is replenished with heat accumulated in the heat medium tank 41 through the hot water auxiliary heat exchanger 37.

3 is a system schematic diagram showing a connection state during hot water supply and heating operation of an air-conditioning and hot water supply system having a heat pump 2 according to the present invention, and for the hot water supply and heating operation, the refrigerator 1 and the heat pump ( 2) is shown a state in which the heat medium circulation means 4 including the hot water supply means 3 and the heating and cooling load portion 5 is connected.

In the cooling and heating and hot water supply system shown in FIG. 3, the hot water supply means 3 is connected to the refrigerator 1 and the heat pump 2 as shown in FIG. The heat medium circulation means 4 is connected to the main heat exchanger 24 of the heat pump 2 by the heat medium pipe 49, and is connected to the end of the heat medium pipe 49 to store the heat medium. An air-conditioning and heating portion 5 for heating the room is connected to the air passage 41 by air-conditioning piping 50.

The hot water supply operation by the cooling and heating and hot water supply system shown in FIG. 3 is operated in the same manner as the method of operating the hot water supply system shown in FIG. 2, and the hot water supply operation is usually performed depending on the heat pump 2, and when the maximum heating load occurs. Hot water operation is performed to drive the heat pump 2 and the refrigerator 1 together to obtain a heating load insufficient for the maximum heating load from the condenser 12 of the refrigerator 1.

In order to perform the heating operation by the air-conditioning and hot water supply system, as shown in the drawing, the heat medium stored in the heat medium tank 41 of the heat medium circulation means 4 is heated by the heat medium pump 42 through the heat medium pipe 49. The heat medium supplied to the main heat exchanger 24 of the heat pump 2 and introduced into the main heat exchanger 24 is compressed and discharged from the compressor 21 of the heat pump 2 and the main heat. The heat exchanger 24 is heated by heat exchange and flows into the heat medium tank 41 so that the sensible heat is accumulated, and a part of the heat medium stored in the heat medium tank 41 is cooled through the air-conditioning pipe 50 through the air-conditioning load part 5. The heating medium which is supplied to and cooled by passing through the cooling and heating load part 5 is returned to the heating medium tank 41 and circulated to the main heat exchanger 24 through the heating medium pipe 49 to be reheated. On the other hand, the refrigerant heat-exchanged with the heat medium in the main heat exchanger 24 is condensed at a low temperature and high pressure, and then axially expanded while passing through the bidirectional expansion valve 25, by the bidirectional expansion valve 25 to a low temperature low pressure gas state The phase-changed refrigerant passes through the auxiliary heat exchanger 26 and is slightly increased in heat exchange with groundwater or geothermal heat, and then flows back into the compressor 21 through the four-way control valve 25.

The high temperature heating medium supplied to the cooling / heating load part 5 is supplied to the fan coil unit 43 or the bottom coil 45 by a cooling / heating load pump 46 formed at the outlet side of the heating medium tank 41. Air-conditioning piping 50 connected to the outlet side of the cooling and heating load pump 46 is branched by the branch pipe 44 to circulate the heat medium to a plurality of places to perform the cooling and heating, the end of the branch pipe 44 The fan coil unit 43 is formed in the part to warm the air in the room, and the heating and cooling pipes 50, which are not branched by the branch pipes 44, have a bottom coil 45 for warming the floor. Formed. Here, the on-off valves 47 and 47 'are formed in the branch pipes 44 and the air-conditioning pipes 50 extending from the outlet air-conditioning piping 50 of the heat medium tank 41, respectively. 47 and 47 '), the fan coil unit 43 and the bottom coil 45 may be operated together or individually to perform heating. Before the branch pipe 44 connected to the outlet side of the fan coil unit 43 and the air conditioning pipe 50 connected to the outlet side of the bottom coil 45 are joined to one air conditioning pipe 50, a check valve ( 48,48 ') to prevent reverse flow of the heat medium.

In addition, when heating by circulating the heating medium heated by the main heat exchanger 24 of the heat pump (2) can be used when the heating load is not largely required, but the temperature of the outside air drops sharply or after returning home In order to raise the room temperature within a short time, the heating system requires a maximum heating load, so that the heating medium is further heated through heat exchange with hot water heated by the condenser 12 by operating the refrigerator 1. need. Therefore, the bypass electron valve 35 formed in the bypass pipe 40 branched from the hot water pipe 39 at the outlet side of the condenser 12 of the refrigerator 1 is opened to bypass the hot water, and the bypass pipe 40 At the end of the) a hot water auxiliary heat exchanger (37) is formed so that the heat medium heated by the main heat exchanger (24) passes the hot water auxiliary heat exchanger (37) so that the heat medium is further heated by heat exchange with the hot water. The heating system is configured to compensate for the shortage of the maximum heating load. In the bypass pipe 40 connected to the outlet side of the hot water auxiliary heat exchanger 37, a check valve 36 is formed so that the hot water cooled and circulated by the heat exchange with the heat medium does not flow back.

4 is a system schematic diagram showing a connection state during hot water supply and cooling operation of a cooling and heating and hot water supply system having a heat pump 2 according to the present invention, and the refrigerator 1 and the heat pump (for hot water supply and cooling operation). 2) is shown a state in which the heat medium circulation means 4 including the hot water supply means 3 and the heating and cooling load portion 5 is connected.

In the cooling and heating and hot water supply system shown in FIG. 4, the hot water supply means 3 is connected to the refrigerator 1 and the heat pump 2 as shown in FIG. The heat medium circulation means 4 is connected to the main heat exchanger 24 of the heat pump 2 by the heat medium pipe 49, and is connected to the end of the heat medium pipe 49 to store the heat medium. An air-conditioning and heating portion 5 for cooling the room is connected to 41.

The hot water supply operation by the air conditioning and hot water supply system shown in FIG. 4 is operated in the same manner as the method of operating the hot water supply system shown in FIG. 2.

In order to perform the cooling operation by the air conditioning and hot water supply system, as shown in the drawing, the heat medium stored in the heat medium tank 41 of the heat medium circulation means 4 is heated by the heat medium pump 42 through the heat medium pipe 49. The heat medium supplied to the main heat exchanger 24 of the heat pump 2 and introduced into the main heat exchanger 24 is throttled and expanded by a bidirectional expansion valve 25 of the heat pump 2 to form a gas at low temperature and low pressure. Cooled by heat exchange with the refrigerant changed into a phase, and flows through the hot water auxiliary heat exchanger (37) to the heat medium tank (41) to store sensible heat. A portion of the heat medium stored in the heat medium tank 41 is supplied to the air-conditioning load part 5, and the heat medium absorbing heat while passing through the air-conditioning load part 5 is returned to the heat medium tank 41. By the operation of the heat medium pump 42, the heat medium pipe 49 is circulated to the main heat exchanger 24 and recooled. On the other hand, the refrigerant heat-exchanged with the heat medium in the main heat exchanger 24 is then evaporated and introduced into the compressor 21 through the four-way control valve 25, compressed by the high-temperature, high-pressure gas from the compressor 21 is discharged The refrigerant is slightly cooled by heat exchange with hot water while passing through the superheat heat exchanger 22, and the refrigerant introduced into the auxiliary heat exchanger 26 through the four-way control valve 25 is further cooled by heat exchange with groundwater or geothermal heat. The refrigerant is condensed by a low temperature and high pressure refrigerant, and the refrigerant is throttled while passing through the bidirectional expansion valve 25 to be phase-changed into a low temperature low pressure gas state and then transferred to the main heat exchanger 24.

In general, since the cooling of the room is mainly performed by the fan coil unit 43 in the summer when cooling is required, the heating medium circulation path of the heating / cooling load part 5 in the state excluding the floor cooling by the floor coil 45 is determined. And the cooling operation is performed. Therefore, the low-temperature heating medium supplied to the cooling / heating load part 5 is supplied to the fan coil unit 43 by the cooling / heating load pump 46 formed at the outlet side of the heating medium tank 41 to exchange heat with indoor air. Cooling of the room is achieved.

The heating and cooling load unit 5 is the same as the heating system shown in Figure 3, the heating and cooling pipe 50 connected to the outlet side of the cooling and heating load pump 46 to circulate the heat medium to a plurality of places to perform the heating and cooling In order to be branched by a branch pipe 44, the branch pipe 44 is extended to the end of the fan coil unit 43 for heating or cooling the air in the room is formed, the branch pipe 44 A bottom coil 45 is formed in the air-conditioning pipe 50 that is not branched by the branch, and opening and closing valves 47 and 47 'are formed in the branch pipe 44 and the air-conditioning pipe 50. .

Therefore, during the cooling operation, the on / off valve 47 of the bottom coil 45 is shut off and the on / off valve 47 'of the fan coil unit 43 is opened to heat the medium to the fan coil unit 43. It is desirable to determine the flow path to be circulated. In addition, it is preferable to form check valves 48 and 48 'on the outlet side of the fan coil unit 43 and the bottom coil 45 to prevent backflow of the heat medium.

In addition, since the low-temperature heating medium is circulated in the heating medium pipe 49 of the heating medium circulation means 4 during the cooling operation by the air conditioning and hot water supply system shown in FIG. 4, the hot water auxiliary heat exchanger 37 used during heating operation. Is not used, and at the same time, the bypass electron valve 35 formed in the bypass pipe 40 of the hot water supply means 3 is blocked so that hot water does not flow into the hot water auxiliary heat exchanger 37.

The air-conditioning and hot water supply system having a heat pump according to the present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions and changes can be made without departing from the technical spirit of the present invention. It will be apparent to one of ordinary skill in the art to which this invention belongs.

As described above, the present invention provides a freezer to the heat pump to compensate for the hot water load generated when a large amount of hot water is momentarily required during the hot water operation by the heat pump, that is, the hot water is not supplied smoothly during the maximum hot water load. In addition, after connecting the hot water pipe of the hot water supply means to the condenser of the freezer to pass the hot water to heat the hot water primarily, and then the hot water is passed through the superheat heat exchanger of the heat pump to heat the second hot water. It was possible to supply a large amount of hot water quickly.

In addition, when the heating operation by the heat pump is required during the maximum heating load in winter, the heating operation of the heat pump alone can not afford the maximum heating load, so to compensate for this by adding a freezer to the heat pump and the hot water heated by the condenser A hot water auxiliary heat exchanger for heat exchange was formed in the heat medium circulation means to further heat the heat medium by the heat exchange with the hot water to compensate for the insufficient heating load. Connected to allow a large amount of hot water supply.

In addition, the hot water supply means and the heat medium circulation means by circulating the sensible heat of the hot water and heat medium that absorbed heat to provide a heat storage tank to use it during hot water heating or heating and heating loads to enable smooth hot water supply and heating and heating. In operation of the heating / heating and hot water supply system having a heat pump according to the present invention, the secondary heat exchanger of the heat pump and the evaporator of the freezer are heat-exchanged at a constant temperature regardless of external air conditions to obtain an overall system performance improvement. In order to connect the ground heat / ground water pipes to the auxiliary heat exchanger and the evaporator so that ground water or ground heat is supplied to allow heat exchange.

Claims (7)

A compressor (1) in which a compressor (11), a condenser (12), an expansion valve (13), and an evaporator (14) are sequentially connected to form a refrigeration cycle; A heat pump in which a compressor 21, a superheat heat exchanger 22, a four-way control valve 25, a main heat exchanger 24, a bidirectional expansion valve 25, and an auxiliary heat exchanger 26 are sequentially connected to form a cooling and heating cycle. (2); Hot water supply means (3) for storing and supplying hot water of high temperature obtained by heat exchange with the condenser (12) of the refrigerator (1) and the superheat heat exchanger (22) of the heat pump (2); And Heat medium circulation means (4) for storing and circulating the low or high temperature heat medium obtained by heat exchange with the main heat exchanger (24) of the heat pump (2) for use in cooling and heating; Heating and heating system with a heat pump, characterized in that comprises a. The method of claim 1, The evaporator (14) of the refrigerator (1) and the auxiliary heat exchanger (26) of the heat pump (2) is a heating and heating system with a heat pump characterized in that the heat exchange is performed by ground water or geothermal heat. The method of claim 1, The hot water supply means 3, A hot water pump 32 for circulating hot water for providing hot water; A water supply unit 30 installed immediately before the hot water pump 32 and provided with a check valve 33 to replenish water supply by the amount of hot water consumption; Hot water tank (31) for storing hot water heated by heat exchange with the condenser (12) and the superheat exchanger (22); And A hot water valve 38 connected to the hot water tank 31 for discharging hot water at high temperature; Heating and heating system with a heat pump characterized in that it comprises a. The method of claim 1, The heat medium circulation means 4, A heat medium pump 42 for circulating the heat medium for cooling and heating; A heat medium tank 41 for storing a heat medium heated or cooled by heat exchange with the main heat exchanger 24; And A heating / cooling load pump (46) connected to the heating medium tank (41) to circulate the heating medium of high temperature or low temperature to the heating / cooling load part (5); Heating and heating system with a heat pump characterized in that it comprises a. The method of claim 4, wherein The fan coil unit 43 and the bottom coil 45 are branched by forming branch pipes 44 at the outlet side of the air-conditioning load pump 46 and the inlet side of the heat medium tank 41. Cooling and heating and hot water supply system with a heat pump, characterized in that the opening and closing valves (47, 47 ') are formed at the inlet side of the unit (43) and the bottom coil (45), respectively, through the selective operation. The method of claim 1, The bypass pipe 40 is connected to the hot water pipe 39 connected to the outlet side of the condenser 12 of the hot water supply means 3 and the outlet side of the superheater inductor 22, and the outlet of the condenser 12 is connected. The hot water supply electron valve 34 and the bypass electron valve 35 are respectively formed in the hot water pipe 39 and the bypass pipe 40 branched from the side, and absorbed from the main heat exchanger 24 of the heat pump 2. In order to maintain heating load required for heating and cooling with respect to heat energy, a hot water auxiliary heat exchanger 37 is provided at the outlet side heat pipe 49 of the main heat exchanger 24 and the bypass side pipe 40 of the outlet side of the condenser 12. Heating and heating and hot water supply system with a heat pump, characterized in that configured to complement the heating load provided. The method of claim 6, The hot water supply electron valve 34 and the bypass electron valve 35 are heated and operated by a temperature sensor installed in the hot water tank 31 and the heat medium tank 41 by the temperature sensed. And hot water system.