KR20110123587A - Hot water supply device associated with heat pump and method for controlling the same - Google Patents

Abstract

PURPOSE: A method of controlling a heating device operating with a heat pump is provided to optimize a heating operation time regardless of the material of the indoor floor and the temperature of external air since the temperature of air heating water is controlled based on the heating operation time. CONSTITUTION: A method of controlling a heating device operating with a heat pump comprises next steps. The operation of the heating device starts and the temperature of the indoor floor is sensed(S10,S11). The temperature of the indoor floor sensed is compared with a target temperature(S12). Depending on the comparison result, the operation factor of the compressor of the heat pump changes(S13,S14). The heating device comprises a heat pump and a floor heating unit. The heat pump cools or heats the indoor space using refrigerant cycle. The floor heating unit heat-exchanges the refrigerant of the heat pump with water.

Description

Hot water supply device associated with heat pump and method for controlling the same}

The present invention relates to a hot water supply device for supplying hot water in conjunction with a heat pump and a control method thereof.

In general, a hot water supply device means a device that provides hot water to a user by heating water with a heating source. At this time, the water is heated by the heat pump, the device for providing hot water to the user may be referred to as a heat pump interlocking hot water supply device.

The hot water supply device includes a water supply passage for supplying water, a water storage unit for storing water supplied through the water supply passage, a heating source for heating the supplied water, and the heated water to a user. It includes an exit flow path to provide.

The heat pump may include a compressor for compressing a refrigerant, a condenser for condensing the refrigerant discharged from the compressor, an expander for expanding the refrigerant passing through the condenser, an evaporator for evaporating the refrigerant expanded in the expander, It comprises a refrigerant pipe connecting the compressor, condenser, expander, evaporator to form a refrigerant cycle.

During the flow of the refrigerant in the heat pump, the refrigerant absorbs heat in the evaporator to release heat from the condenser. The heat pump interlocking hot water supply device may perform the hot water supply in such a manner that the refrigerant transfers heat to the water of the hot water supply device.

The present invention is to provide a heat pump interlocking hot water supply device and a control method thereof that can improve the heating performance.

In addition, the present invention is to provide a heat pump interlocking hot water supply device and a control method thereof that can improve the driving efficiency and performance.

Technical problems to be achieved by the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

Heat pump interlocking hot water supply apparatus and a control method according to the present invention proposed as described above performs the heating based on the floor temperature of the room.

In addition, the heat pump interlocking hot water supply device and the control method according to the present invention preferentially perform the space heating in comparison with the floor heating in the initial stage of operation.

In addition, the heat pump interlocking hot water supply device and the control method according to the present invention adjust the temperature of the heating water based on the heating operation time.

As described above, according to the heat pump interlocking hot water supply device and the control method thereof, the heating is performed based on the floor temperature of the room, thereby maintaining a more comfortable environment for the user by maintaining the optimum temperature state. There is an advantage that can be provided.

In the initial stage of operation, space heating is performed in preference to floor heating. In general, since the time when the room temperature reaches the target temperature during space heating is faster than the time when the floor temperature reaches the target temperature during floor heating, there is an advantage that the heating performance that the user feels can be further improved. .

In addition, since the temperature of the heating water is adjusted based on the heating operation time, regardless of the material of the indoor floor and the outside temperature, the range is not too late for the user to feel uncomfortable due to the delay of the heating and the energy loss is too fast. There is an advantage to optimize the heating operation time within. That is, there is an advantage that the operating efficiency and performance can be optimized.

1 is a schematic view of a heat pump interlocking hot water supply apparatus according to the present invention.
Figure 2 is a block diagram of a heat pump interlocking hot water supply apparatus according to the present invention.
3 is a control block diagram of a heat pump interlocking hot water supply device according to the present invention.
Figure 4 is a flow chart showing a first embodiment of the control method of the heat pump interlocking hot water supply apparatus according to the present invention.
Figure 5 is a flow chart showing a second embodiment of the control method of the heat pump interlocking hot water supply apparatus according to the present invention.
6 is a view showing a refrigerant flow when the heat pump interlocking hot water supply apparatus according to the present invention performs the space heating.
7 is a view showing a refrigerant flow when the heat pump interlocking hot water supply apparatus according to the present invention performs the floor heating.
8 is a flowchart showing a third embodiment of a control method of a heat pump interlocking hot water supply device according to the present invention;

Hereinafter, a heat pump interlocking hot water supply device according to the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic diagram of a heat pump interlocking hot water supply device according to the present invention, Figure 2 is a block diagram of a heat pump interlocking hot water supply device according to the present invention.

1 and 2, the heat pump interlocking hot water supply device includes a main refrigerant circuit 2, a hot water supply heat exchanger 4, a refrigerant control unit 6, a heat exchanger bypass flow path 8, Auxiliary refrigerant control unit 10 is included.

The main refrigerant circuit 2 includes a compressor 12, an outdoor heat exchanger 14, expansion mechanisms 16 and 17, and an indoor heat exchanger 18, and according to the flow direction of the refrigerant, air conditioning or heating the room indoors. Air conditioning can be performed. That is, the air conditioning operation of the main refrigerant circuit 2 may be performed by a space heating operation for heating the indoor air or a space cooling operation for cooling the indoor air.

In detail, an accumulator 24 for preventing liquid refrigerant from flowing into the compressor 12 is installed in the suction passage 22 of the compressor 12, and the compressor 12 is installed in the discharge passage 26 of the compressor 12. An oil separator 28 for separating oil from the refrigerant discharged from the oil and oil and recovering the oil from the compressor 12 is installed.

Next, the outdoor heat exchanger 14 condenses or evaporates the refrigerant, and may be configured as an air refrigerant heat exchanger in which heat exchange is performed between the outdoor air and the refrigerant, and is configured as a water refrigerant heat exchanger in which heat exchange is performed between the cooling water and the refrigerant. It is also possible. When the outdoor heat exchanger 14 is configured as an air refrigerant heat exchanger, the outdoor fan 30 is installed to blow outdoor air to the outdoor heat exchanger 14.

The outdoor heat exchanger 14 is connected to the indoor heat exchanger 18 and the heat exchanger connecting pipe 32, and the expansion mechanisms 16 and 17 are installed at the heat exchanger connecting pipe 32. The expansion mechanism (16, 17) is the outdoor heat exchanger (14) and the outdoor heat exchanger (14) of the outdoor heat exchanger (14) installed close to the outdoor heat exchanger (14) and the outdoor heat exchanger (14) And an indoor expansion mechanism (17) installed in proximity to the indoor heat exchanger (18).

In addition, the heat exchanger connection pipe 32 is an outdoor heat exchanger-outdoor expansion device connecting pipe 34 to which the outdoor heat exchanger 14 and the outdoor expansion device 16 are connected, and the outdoor expansion device 16 and the indoor expansion device. An expansion device connection pipe 36 to which the mechanism 17 is connected, and an indoor expansion device-inside heat exchanger connection pipe 38 to which the indoor expansion device 17 and the indoor heat exchanger 18 are connected.

The indoor heat exchanger 18 is configured to perform indoor cooling or heating while heat exchange is performed between indoor air and a refrigerant, and an indoor fan 39 is disposed at one side of the indoor heat exchanger 18. It is installed to circulate indoor air.

The main refrigerant circuit 2, after the refrigerant compressed by the compressor 12 sequentially passes through the outdoor heat exchanger 14, the expansion mechanism (16, 17) and the indoor heat exchanger (18) Connected to the compressor 12, the indoor heat exchanger 18 may be configured as a cooling air conditioner that functions as an evaporator and cools the indoor air. In addition, the main refrigerant circuit (2) after the refrigerant compressed by the compressor 12 sequentially passes through the indoor heat exchanger 18, the expansion mechanism (16, 17) and the outdoor heat exchanger (14) It is possible to be configured to be connected to the compressor 12, the indoor heat exchanger 14 is a heating air conditioner for heating the indoor air while functioning as a condenser. In addition, the main refrigerant circuit 2 sequentially cools the outdoor heat exchanger 14, the expansion mechanisms 16 and 17, and the indoor heat exchanger 18 when the refrigerant compressed by the compressor 12 is heated. After passing through, it is recovered to the compressor 12, and during the cooling operation, after passing through the indoor heat exchanger 18, the expansion mechanisms 16 and 17, and the outdoor heat exchanger 14 sequentially, the compressor 12 It is possible to be configured as a combined air-conditioning and air conditioner to be recovered.

Hereinafter, it will be described that the main refrigerant circuit 2 is configured as a combined air conditioning and air conditioner capable of performing cooling and heating operation switching.

The main refrigerant circuit 2 allows the refrigerant to flow in the order of the compressor 12, the outdoor heat exchanger 14, the expansion mechanisms 16 and 17, and the indoor heat exchanger 18, or the compressor 12, It further includes a cooling / heating switching valve 40 for switching the flow direction of the refrigerant to flow in the order of the indoor heat exchanger 18, the expansion mechanism (16, 17) and the outdoor heat exchanger (14). The air-conditioning switching valve 40 is connected to the compressor 12, the compressor suction passage 22 and the compressor discharge passage 26, and is connected to the outdoor heat exchanger 14 and the outdoor heat exchanger connecting pipe 42. It is connected to the indoor heat exchanger 18 and the indoor heat exchanger connecting pipe 44.

The hot water supply heat exchanger 4 hot water the main refrigerant circuit 2 so that the refrigerant discharged from the compressor 12 is used for hot water supply and then condensed, expanded, and evaporated in the main refrigerant circuit 2. It is connected to the flow path (50). The hot water supply flow path 50 includes a hot water supply inflow path 52 through which a refrigerant of the main refrigerant circuit 2, in particular, the refrigerant compressed by the compressor 12 flows into the hot water heat exchanger 4, and a hot water heat exchanger. The coolant flowing out from (4) includes a hot water supply flow passage 54 in which the refrigerant flows to the main refrigerant circuit 2, in particular, the cooling / heating switching valve 40. The hot water supply inflow channel 52 and the hot water supply flow path 54 are connected to the main refrigerant circuit 2 corresponding to the compressor 12 and the cooling / heating switching valve 40, respectively.

One end of the hot water supply inflow passage 52 is connected to the compressor discharge passage 26, and the other end is connected to the hot water supply heat exchanger 4. One end of the hot water supply flow passage 54 is connected to the hot water supply heat exchanger 4, and the other end is connected to the compressor discharge flow channel 26.

At this time, the hot water supply heat exchanger (4) when the refrigerant control unit 6 causes the refrigerant to flow to the hot water supply heat exchanger (4), the refrigerant superheated in the compressor 12 heat exchange with the water used for the hot water supply It is a kind of desuperheater that causes it to condense.

The hot water supply heat exchanger (4) has a refrigerant flow path through which the superheated refrigerant passes, and a water flow path through which water used for hot water passes. The hot water supply heat exchanger (4) may be a double tube heat exchanger formed between the refrigerant passage and the water passage with the heat transfer member interposed therebetween, and the refrigerant heat exchanger and the water passage with the plate heat exchanger alternately formed with the heat transfer member interposed therebetween. It is also possible.

The hot water heat exchanger 4 is connected to the hot water tank 56 and the hot water supply pipe 58, and the hot water supply pipe 58 is provided with a hot water pump 60. The hot water supply tank 56 is connected to a water supply part 62 through which external water is supplied to the hot water supply tank 56, and a water extraction part 64 through which water from the hot water supply tank 56 is discharged. The hot water supply tank 56 may be configured such that the water introduced into the hot water supply tank 56 after being heated in the hot water supply heat exchanger 4 is directly withdrawn to the water outlet 64.

A hot water supply coil connected to the hot water supply pipe 58 is installed in the hot water supply tank 56, and the water heated in the hot water supply heat exchanger 4 passes through the hot water supply coil to heat the inside of the hot water supply tank 56. In addition, of course, the water obtained by the water supply unit 62 may be heated by the hot water supply coil to be discharged to the water extraction unit 64.

In the heat pump interlocking hot water supply device, the refrigerant heating the hot water supply heat exchanger (4) can also be immediately flowed into the main refrigerant circuit (2), and the main refrigerant circuit is used for floor heating or air conditioning heating of the room. It is also possible to flow in (2).

The heat pump interlocking hot water supply device may further include a water refrigerant heat exchanger 72 connected to the hot water supply passage 50 and the water refrigerant heat exchanger connection passage 70. The refrigerant passing through the hot water supply heat exchanger 4 may flow to the water refrigerant heat exchanger 72 through the hot water supply flow path 50 and the water refrigerant heat exchanger connection flow path 70 after heating the water.

The water refrigerant heat exchanger connection flow path 70 is a heating inlet flow path 74 through which the refrigerant in the hot water supply flow path 54 flows into the water refrigerant heat exchanger 72, and the water refrigerant heat exchanger 72. The refrigerant that has passed includes a heating outflow channel 76 that flows into the hot water supply outflow path 54. The heating outflow path 76 is provided with a check valve 78 which prevents the refrigerant in the hot water outflow path 54 from flowing back to the water refrigerant heat exchanger 72 through the heating outflow path 76.

The water refrigerant heat exchanger (72) is a condensation heat exchanger in which the refrigerant condensed primarily in the hot water supply heat exchanger (4) is further condensed while heat exchanged with water. The water refrigerant heat exchanger (72) has a refrigerant passage through which the refrigerant passing through the hot water supply heat exchanger (4) passes, and a water passage through which water used for floor heating or indoor air conditioning heating passes. The water refrigerant heat exchanger 72 may be a double tube heat exchanger formed between the refrigerant passage and the water passage with the heat transfer member interposed therebetween, and the plate heat exchanger having the refrigerant passage and the water passage alternately formed with the heat transfer member interposed therebetween. It is also possible to consist of groups.

Then, when the water refrigerant heat exchanger 72 is connected to the floor heating pipe 80 and the heating water pipe 82 installed on the floor of the room, the floor heating pump 84 is installed in the heating water pipe 82 In the above, the heat of the refrigerant passing through the hot water supply heat exchanger (4) can be further used for indoor floor heating.

In addition, when the water refrigerant heat exchanger 72 is installed in the case, and the indoor fan for circulating the indoor air to the water refrigerant heat exchanger 72 is installed in the case, the water refrigerant heat exchanger 72 and the case. And the indoor fan is composed of a fan coil unit for circulating heating the air in the room, the heat of the refrigerant passing through the hot water supply heat exchanger (4) can be used in addition to the air conditioning heating in the room.

Hereinafter, the floor heating pipe 80 is connected to the water refrigerant heat exchanger 72 through the heating water pipe 82, and the floor heating pump 84 is installed in the heating water pipe 82. Explain.

The heat pump interlock hot water supply device is a water refrigerant heat exchanger refrigerant control unit 86 for controlling the flow of the refrigerant to pass through or bypass the water refrigerant heat exchanger (72) passing through the hot water heat exchanger (4). Include. The water refrigerant heat exchanger 72 may be directly connected to the hot water supply flow passage 54 so that the refrigerant passing through the hot water supply heat exchanger 4 is always used for floor heating, but the user selectively selects the floor heating operation. It is preferable to be installed so that it can be implemented. The water refrigerant heat exchanger refrigerant control unit 86 is a floor heating valve that allows the refrigerant to pass through the water refrigerant heat exchanger 72 at the time when the user selects the floor heating.

The water refrigerant heat exchanger refrigerant control unit 86 controls the flow direction of the refrigerant so that the refrigerant flows to the water refrigerant heat exchanger (72) when the operation of the heat pump interlocking hot water supply device includes a floor heating operation, heat When the operation of the pump-linked hot water supply device does not include a floor heating operation, the refrigerant serves to adjust the flow direction of the refrigerant to bypass the water refrigerant heat exchanger (72). That is, the water refrigerant heat exchanger refrigerant control unit 86 is a refrigerant during the water heating operation, at the same time of the floor heating operation and hot water operation, and during the simultaneous operation of the floor heating operation and hot water operation and air conditioning operation It is adjusted to flow to the group (72).

In this case, the water refrigerant heat exchanger refrigerant control unit 86 may be provided in the hot water supply passage 50, in particular the hot water supply flow passage 54 may be composed of one three-way valve to select the refrigerant outflow direction. When the water refrigerant heat exchanger refrigerant control unit 86 is a three-way valve, the inlet portion and the first outlet portion are connected to the hot water supply flow passage 54, and the second outlet portion is connected to the heating inflow passage 74.

However, the water refrigerant heat exchanger refrigerant control unit 86 is installed in the heating inflow passage (74), the first valve is opened during the floor heating operation and closed when the floor heating operation is not performed, and the hot water supply flow passage (54) It is also possible to include a second valve installed in the floor heating operation is closed when the floor heating operation is not performed.

On the other hand, the refrigerant control unit 6 controls the flow direction of the refrigerant discharged from the compressor 12 so that the refrigerant discharged from the compressor 12 passes through or bypasses the hot water supply heat exchanger 4.

The refrigerant control unit 6, when the operation of the heat pump interlocking hot water supply device includes at least one of hot water operation and floor heating operation, the refrigerant compressed by the compressor 12 is the hot water heat exchanger (4). And the refrigerant compressed by the compressor 12 bypasses the hot water supply heat exchanger 4 when the operation of the heat pump interlocking hot water supply device does not include both hot water operation and floor heating operation. Adjusted.

In more detail, the refrigerant control unit 6 is hot water operation, simultaneous operation of hot water operation and air conditioning operation, simultaneous operation of hot water operation and floor heating operation, simultaneous operation of hot water operation and floor heating operation and air conditioning operation, In the floor heating operation, the refrigerant compressed by the compressor 12 is controlled to flow to the hot water supply heat exchanger (4). In the air conditioner operation, the space cooling operation, the space heating operation, the refrigerant is controlled to bypass the hot water supply heat exchanger (4).

The refrigerant control unit 6 may be configured as one three-way valve installed in the main refrigerant circuit 2 to select the refrigerant outflow direction. When the refrigerant control unit 6 is a three-way valve, the inlet part and the first outlet part are connected to the compressor outlet flow path 26, and the second outlet part is connected to the hot water supply inflow path 52.

However, the refrigerant control unit 6 is installed between the refrigerant control unit 6 and the cooling / heating switching valve 40 of the compressor outflow passage 26, the operation including at least one of hot water operation and floor heating operation. The first valve is closed when the air conditioning operation, and the first valve is opened in the air-conditioning operation, and installed in the hot water supply inflow passage 52, the first valve is opened when the operation including at least one of the hot water supply operation and the floor heating operation, and closed during the air conditioning operation It is also possible to include two valves.

The heat exchanger bypass flow path 8 allows the refrigerant passing through the hot water supply heat exchanger 4 to bypass any one of the outdoor heat exchanger 14 and the indoor heat exchanger 18. The refrigerant passing through 4) is connected to the outdoor heat exchanger 14 and the indoor heat exchanger 18 to guide the refrigerant. One end of the heat exchanger bypass flow path 8 is connected to the hot water supply flow path 50, and the other end is connected between the indoor expansion device 17 and the outdoor expansion device 16.

One end of the heat exchanger bypass passage 8 is connected to the hot water supply flow passage 54 of the hot water supply passage 50, and the other end is connected to the expansion mechanism connecting pipe 36, and the hot water supply flow passage 54 is provided. To guide the refrigerant between the indoor expansion mechanism (17) and the outdoor expansion mechanism (16). The refrigerant guided to the heat exchanger bypass flow path 8 is expanded in the indoor expansion mechanism 17 and then evaporated in the indoor heat exchanger 18 to be recovered to the compressor 12, or the outdoor expansion mechanism. After expansion at (16), it is evaporated in the outdoor heat exchanger (14) and recovered to the compressor (12). That is, when the refrigerant is guided between the indoor expansion mechanism 17 and the outdoor expansion mechanism 16 through the heat exchanger bypass flow path 8, the main refrigerant circuit 2 does not generate a condensation process but an expansion process. Only the over-evaporation process is generated, the heat transfer amount of the hot water supply heat exchanger 4 and the water refrigerant heat exchanger 72 is increased, the hot water efficiency and the floor heating efficiency is increased.

The auxiliary refrigerant control unit 10 is a refrigerant passing through the hot water supply heat exchanger (4) so that the refrigerant passing through the hot water supply heat exchanger (4) can pass through or bypass the heat exchanger bypass flow path (8). Adjust the flow direction.

When the operation of the heat pump interlocking hot water supply device includes two operations of a hot water supply operation and an air conditioning operation, the auxiliary refrigerant control unit 10 includes a refrigerant passing through the hot water supply heat exchanger 4, and the heat exchanger bypass flow path 8. Adjust to bypass. In more detail, the auxiliary refrigerant control unit 10 is the hot water operation and the air conditioning operation at the same time, the hot water operation and the floor heating operation and air conditioning operation at the same time, the air conditioning operation, the hot water operation, the hot water operation and the floor heating operation of At the same time, during the floor heating operation, the refrigerant passing through the hot water supply heat exchanger 4 is adjusted to bypass the heat exchanger bypass passage 8.

When the auxiliary refrigerant control unit 10 is in a defrost condition during the hot water supply operation, the refrigerant passing through the hot water heat exchanger 4 is adjusted to bypass the heat exchanger bypass flow path 8, and at this time, the main refrigerant The circuit 2 is switched from heating operation to cooling operation for defrosting the outdoor heat exchanger 14, and the outdoor heat exchanger 14 is defrosted.

The auxiliary refrigerant control unit 10 may be installed in the hot water supply flow passage 54 may be composed of one three-way valve to select the refrigerant outflow direction. When the auxiliary refrigerant control unit 10 is a three-way valve, the inlet portion and the first outlet portion are connected to the hot water supply flow passage 54, and the second outlet portion is connected to the heat exchanger bypass passage 8.

However, the auxiliary refrigerant control unit 10 is installed between the auxiliary refrigerant control unit 10 and the cooling / heating switching valve 40 of the hot water supply flow path 54, or is an operation including hot water operation and air conditioning operation, A first valve which is opened when the operation includes a floor heating operation and an air conditioning operation, and which is closed when the operation includes at least one of a floor heating operation and a hot water operation and does not include an air conditioning operation, and a heat exchanger bypass flow path 8 ) Is a driving operation that includes a hot water heating operation and an air conditioning operation or is sealed when the operation includes a floor heating operation and an air conditioning operation, and includes at least one of a floor heating operation and a hot water operation operation and does not include an air conditioning operation. It is also possible to include a second valve that opens when it is open.

The heat pump interlocking hot water supply device includes a heat exchanger bypass valve 88 installed in the heat exchanger bypass flow path 8 to control a flow of refrigerant, the heat exchanger bypass flow path 8 and an indoor expansion mechanism ( It is further provided with a liquid refrigerant valve (90) installed between the 17 to regulate the flow of the refrigerant.

The heat exchanger bypass valve 88 is opened at the same time of the hot water operation and the floor heating operation or the floor heating operation or the hot water operation, and is the air conditioning operation or the simultaneous operation of the air conditioning operation and the hot water operation or the air conditioning operation and the hot water operation and the floor. It is closed in case of simultaneous operation of heating operation.

The liquid refrigerant valve 90 is opened when the air conditioning operation or the simultaneous operation of 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 floor heating operation, and the simultaneous operation of the hot water operation and the floor heating operation or the floor heating operation. It is closed in case of hot water or hot water operation.

On the other hand, the heat pump interlocking hot water supply device, the main refrigerant circuit (2) can form a separate air conditioner having the outdoor unit (O) and the indoor unit (I), the hot water supply unit (H) to the outdoor unit (0) Can be connected.

The compressor 12, the cooling / heating switching valve 30, the outdoor heat exchanger 14, the outdoor expansion mechanism 16, and the outdoor fan 30 are installed in the outdoor unit O. In addition, the indoor expansion mechanism 17, the indoor heat exchanger 18 and the indoor fan 39 are installed in the indoor unit (I). The hot water supply heat exchanger 4, the hot water pump 60, the water refrigerant heat exchanger 72, the floor heating pump 84, and the water refrigerant heat exchanger refrigerant control unit 86 are installed in the hot water supply unit H. . In addition, the refrigerant control unit 6, the heat exchanger bypass flow path 8, the auxiliary refrigerant control unit 10, the heat exchanger bypass valve 88 and the liquid refrigerant valve 90 is installed in the outdoor unit (O). It is preferable.

Hereinafter, the refrigerant flow of the heat pump interlocking hot water supply apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

2, the heat pump interlocking hot water supply device is operated as follows during the simultaneous operation of the floor heating operation, hot water supply operation and space heating operation. The compressor 12 is driven, the refrigerant control unit 6 is adjusted to flow the refrigerant toward the hot water supply heat exchanger (4), the water refrigerant heat exchanger refrigerant control unit 86 is the hot water supply flow path ( The refrigerant of 54 is adjusted to pass through the water refrigerant heat exchanger (72). The auxiliary refrigerant control unit 10 controls the refrigerant of the hot water supply flow passage 54 to bypass the heat exchanger bypass flow path 8, and the outdoor fan 30 and the indoor fan 39 Is rotated. In addition, the cooling / heating switching valve 40 is driven in a heating mode, the heat exchanger bypass valve 88 is closed, the liquid refrigerant valve 90 is opened, the hot water pump 60 and the bottom The heating pump 84 is driven.

As the hot water pump 60 is driven, the water in the hot water tank 56 flows through the hot water supply pipe 58 to the hot water heat exchanger 4, and passes through the hot water heat exchanger 4. Circulated to the hot water tank 56.

In addition, as the floor heating pump 84 is driven, the water of the floor heating pipe 80 flows to the water refrigerant heat exchanger 72 through the heating water pipe 82 and the water refrigerant heat exchanger 72. After passing through) is circulated to the floor heating pipe (80).

When the compressor 12 is driven, the refrigerant compressed by the compressor 12 passes through the refrigerant control unit 6 and the hot water supply inflow passage 52, and then flows into the hot water supply heat exchanger 4. While passing through the heat exchanger (4), the superheated refrigerant in the compressor (12) heat exchanges with water to condense. The refrigerant condensed in the hot water supply heat exchanger (4) flows into the water refrigerant heat exchanger refrigerant control unit (86), flows into the water refrigerant heat exchanger (72) through the heating inflow passage (74), and the water While passing through the refrigerant heat exchanger (72), heat is exchanged with water to condense again. The refrigerant condensed in the water refrigerant heat exchanger (72) flows out into the hot water supply flow passage (54) through the heating inflow passage (76), and then passes through the auxiliary refrigerant control unit (10) to bypass the heat exchanger. It flows to the cooling / heating switching valve 40 while bypassing the flow path 8. The refrigerant flowing into the cooling / heating switching valve 40 is further condensed by flowing into the indoor heat exchanger 18, and expanded in at least one of the indoor expansion mechanism 17 and the outdoor expansion mechanism 16. Thereafter, the outdoor heat exchanger 14 exchanges heat with outdoor air and evaporates it. The refrigerant evaporated in the outdoor heat exchanger 14 is recovered to the compressor 12 through the cooling / heating switching valve 40.

That is, the refrigerant discharged from the compressor 12 includes the hot water supply heat exchanger 4, the water refrigerant heat exchanger 72, a cooling / heating switching valve 40, an indoor heat exchanger 18, and an indoor expansion mechanism 17. After passing through the outdoor expansion mechanism 16, the outdoor heat exchanger 14, and the cooling / heating switching valve 40, the compressor 12 is recovered.

In the heat pump interlocking hot water supply device, the refrigerant is condensed three times in the course of passing through the hot water supply heat exchanger 4, the water refrigerant heat exchanger 72, and the indoor heat exchanger 18, and the outdoor heat exchanger ( In 14), the refrigerant is evaporated, the hot water heat exchanger 4 heats the water in the hot water tank 56, and the water refrigerant heat exchanger 72 heats the water in the bottom heating pipe 80.

In the heat pump interlocking hot water supply device, during the simultaneous operation of the floor heating operation, the hot water operation and the space heating operation, the refrigerant heats the water of the hot water supply tank 56 and the water of the floor heating pipe 80 together with the indoor air. The heat pump interlocking hot water supply device can be used to efficiently perform hot water supply, floor heating, and space heating.

On the other hand, the refrigerant discharged from the compressor 12 passes through the hot water supply heat exchanger 4 without heat exchange, or the water refrigerant exchanger 72 is changed in accordance with the change of the refrigerant control unit 86 of the water refrigerant exchanger. Bypass or by the method of bypassing the indoor heat exchanger 18 in accordance with the switching of the auxiliary refrigerant control unit 10, at least one of the hot water supply, floor heating, space heating can be selectively performed.

Hereinafter, a control method of a heat pump interlocking hot water supply device according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a control configuration diagram of a heat pump interlocking hot water supply device according to the present invention, and FIG. 4 is a flowchart showing a first embodiment of a control method of the heat pump interlocking hot water supply device according to the present invention.

Referring to FIG. 3, the heater pump interlocking hot water supply device includes a floor temperature sensing unit 101 for sensing a temperature of an indoor floor, an indoor temperature sensing unit 102 for sensing a temperature of an indoor space, and the floor temperature. It includes a control unit 105 for controlling the operation of the compressor 106 in accordance with the floor temperature and the room temperature sensed by the detector 101 and the room temperature detection unit 102. The floor temperature sensing unit 101, the room temperature sensing unit 102, and the control unit 105 are electrically connected to each other to exchange control signals with each other.

Here, the floor temperature detecting unit 101 is located in contact with the floor surface of the room, and directly detects the floor temperature of the room, and senses the floor temperature of the room through an infrared temperature sensor spaced apart from the floor of the room. It may be provided in a variety of ways, such as to. In this case, when using the infrared temperature sensor, the infrared temperature sensor is installed in the remote control installed on one side of the room, the infrared sensor will be able to detect the indoor floor temperature through the infrared radiation emitted from the floor.

Referring to FIG. 4, when the heating operation is started first (S10), the temperature of the indoor floor is detected (S11). In this case, the temperature of the indoor floor may be detected by the floor temperature sensing unit 101.

Next, when the bottom temperature exceeds the target temperature (S12), the operation rate of the compressor 106 is controlled to decrease (S13). As the operation rate of the compressor 106 is reduced, the amount of heating to the floor of the room can be reduced. Thus, an increase in the bottom temperature can be prevented.

However, when the bottom temperature is below the target temperature (S12), the operation rate of the compressor 106 is controlled to increase (S14). By increasing the operation rate of the compressor 106, the amount of heating to the floor of the room can be increased. Thus, the bottom temperature can be raised.

That is, according to this process, the floor temperature of the room can be adjusted to converge to the target temperature.

According to this embodiment, since the operation of the compressor 106 is controlled so that the user directly senses the temperature of the indoor floor that the user actually encounters, and the floor temperature reaches the target temperature based on the detected floor temperature. The temperature can be adjusted to reach the level desired by the user. Therefore, there is an advantage that the heating performance experienced by the user can be further improved.

Hereinafter, with reference to the accompanying drawings, a second embodiment of a heat pump interlocking hot water supply apparatus according to the present invention will be described in detail.

5 is a flowchart showing a second embodiment of a method of controlling a heat pump interlocking hot water supply device according to the present invention, and FIG. 6 is a view showing a refrigerant flow when the heat pump interlocking hot water supply device according to the present invention performs space heating. 7 is a view showing a refrigerant flow when the heat pump interlocking hot water supply apparatus according to the present invention performs the floor heating.

Referring to FIG. 5, when the heating operation is started at the initial operation of the heat pump interlocking hot water supply device, the temperature of the current indoor space is first detected (S21). In this case, the temperature of the indoor space may be detected by the indoor temperature detecting unit 102.

Next, the current room temperature is compared with the target room temperature (S22), and when the current room temperature falls below the target room temperature, space heating is started (S23).

After the space heating starts, the temperature of the current indoor space is detected again (S24). Then, by comparing the detected current room temperature with a target room temperature (S25), unless the current room temperature exceeds the target room temperature, the process of repeatedly detecting the temperature of the room space and comparing it with the target room temperature is repeatedly performed. do. At this time, as the space heating is performed, the temperature of the indoor space gradually increases, and eventually exceeds the target indoor temperature.

However, when the current room temperature exceeds the target room temperature (S25), the space heating operation is stopped (S26), and the current room temperature is sensed (S27).

However, if the current room temperature sensed immediately after the heating operation starts exceeds the target room temperature (S22), the temperature of the current indoor floor is immediately detected (S27).

When the detected current floor temperature is equal to or less than a target floor temperature (S28), floor heating is started (S29).

After the floor heating is started, the temperature of the current indoor floor is detected again (S30). Then, by comparing the detected current floor temperature with the target floor temperature (S31), unless the current floor temperature exceeds the target floor temperature, the process of detecting the temperature of the indoor floor and comparing with the target floor temperature is repeatedly performed. do. At this time, as the floor heating is performed, the temperature of the indoor floor gradually rises, eventually exceeding the target floor temperature.

However, when the current floor temperature exceeds the target floor temperature (S31), the floor heating operation is stopped (S32).

On the other hand, after the process is completed, unless the operation stop signal is input, by sequentially detecting the temperature of the indoor space and the temperature of the indoor floor (S21, S27), by comparing with the target indoor temperature and the target floor temperature, respectively ( S22 and S28), the space heating and floor heating operation can be selectively performed.

On the other hand, referring to Figure 6 describes the flow of the refrigerant when the heat pump interlocking hot water supply device is a space heating operation, first, the compressor 12 is driven, the refrigerant control unit 6, the refrigerant is the hot water supply heat exchanger 4 and the water refrigerant exchanger 72 and the auxiliary refrigerant control unit 10 while being bypassed and controlled to flow to the cooling / heating switching valve 40, the auxiliary refrigerant control unit 10 is the hot water supply outflow The refrigerant in the flow path 54 is adjusted to flow into the heat exchanger bypass flow path 8, the outdoor fan 30 and the indoor fan 39 are rotated, and the cooling / heating switching valve 40 is in a heating mode. The heat exchanger bypass valve 88 is sealed, the liquid refrigerant valve 90 is opened, and the hot water pump 60 and the bottom heating pump 84 are not driven.

When the compressor 12 is driven, the refrigerant compressed by the compressor 12 passes through the refrigerant control unit 6, and then bypasses the hot water supply heat exchanger 4 and the water refrigerant heat exchanger 72 to perform the cooling. / Heating is switched to the valve 40, and then condensed while being heat exchanged with the outdoor air in the indoor heat exchanger (18). The refrigerant condensed in the indoor heat exchanger 18 is expanded in at least one of the outdoor expansion mechanism 16 and the indoor expansion mechanism 17, and is evaporated in the outdoor heat exchanger 14. The refrigerant evaporated in the outdoor heat exchanger 14 is recovered to the compressor 12 through the cooling / heating switching valve 40.

That is, the refrigerant discharged from the compressor 12 may include the cooling / heating switching valve 40, the indoor heat exchanger 18, the outdoor expansion mechanism 16, the indoor expansion mechanism 17, the outdoor heat exchanger 14, and the like. After passing through the cooling / heating switching valve 40 in sequence, the compressor 12 is recovered.

In the heat pump type hot water supply device, the indoor heat exchanger 18 condenses the refrigerant, the outdoor heat exchanger 14 evaporates the refrigerant, and the indoor air is heated while heat exchanged with the indoor heat exchanger 18. That is, the heat pump type hot water supply device has the advantage that the refrigerant is used to heat the indoor air during the space heating operation, and the temperature of the indoor space can be increased more quickly than when the hot water supply and the floor heating are simultaneously performed.

Next, referring to FIG. 7, the refrigerant flow in the case where the heat pump interlocking hot water supply device is underfloor heating operation will be described. First, the compressor 12 is driven, and the refrigerant control unit 6 exchanges the refrigerant with the hot water supply heat exchanger. It is controlled to flow toward the unit 4, the water refrigerant heat exchanger refrigerant control unit 86 is adjusted so that the refrigerant in the hot water supply flow path 54 passes through the water refrigerant heat exchanger 72, the auxiliary refrigerant The control unit 10 is adjusted to allow the refrigerant in the hot water supply flow passage 54 to pass through the heat exchanger bypass flow path 8, the outdoor fan 30 is rotated, and the indoor fan 39 is not rotated. The cooling / heating switching valve 40 is driven in a heating mode, the heat exchanger bypass valve 88 is opened, the liquid refrigerant valve 90 is sealed, and the hot water pump 60 is not driven. The floor heating pump 84 is driven.

As the floor heating pump 84 is driven, the water of the floor heating pipe 80 flows to the water refrigerant heat exchanger 72 through the heating water pipe 82 and the water refrigerant heat exchanger 72. After passing through the floor heating pipe 80 is circulated.

As the compressor 12 is driven, the refrigerant compressed by the compressor 12 passes through the refrigerant control unit 6 and the hot water supply inflow passage 52, and then flows to the hot water heat exchanger 4. After passing the hot water supply heat exchanger (4) without heat exchange, it is introduced into the water refrigerant heat exchanger refrigerant control unit (86). The refrigerant introduced into the water refrigerant heat exchanger refrigerant control unit (86) is introduced into the water refrigerant heat exchanger (72) through the heating inflow passage (74), and passes through the water refrigerant heat exchanger (72). Heat exchange to condense. The refrigerant condensed in the water refrigerant heat exchanger (72) flows out into the hot water supply flow passage (54) through the heating inflow passage (76), and then passes through the auxiliary refrigerant control unit (10) to bypass the heat exchanger. It flows into the flow path 8. The refrigerant flowing into the heat exchanger bypass passage 8 is expanded by the outdoor expansion mechanism 16 after passing through the heat exchanger bypass valve 88, and then the outdoor air is exchanged with the outdoor air by the outdoor heat exchanger 14. Heat exchange and evaporate. The refrigerant evaporated in the outdoor heat exchanger 14 is recovered to the compressor 12 through the cooling / heating switching valve 40.

That is, the refrigerant discharged from the compressor 12 includes the hot water supply heat exchanger 4, the water refrigerant heat exchanger 72, the heat exchanger bypass flow path 8, the outdoor expansion mechanism 16, and the outdoor heat exchanger 14. And after passing through the cooling / heating switching valve 40 is recovered to the compressor (12).

In the heat pump type hot water supply device, the water refrigerant heat exchanger (72) condenses the refrigerant, the outdoor heat exchanger (14) evaporates the refrigerant, and the water refrigerant heat exchanger (72) is the floor heating pipe (80). To heat the water. That is, the heat pump type hot water supply device is used to heat the refrigerant in the floor heating pipe 80 during the floor heating operation, the refrigerant is passed through the indoor heat exchanger 18 or the hot water pump 60 is driven It is possible to increase the water temperature of the floor heating pipe 80 more quickly than in the case.

According to the present embodiment, there is an advantage of allowing the user to feel the heating effect more quickly by performing the space heating, which is relatively effective at the initial stage of operation of the heat pump interlocking hot water supply device, in preference to the floor heating.

More specifically, in the case of heating operation at the initial stage of operation, the temperature of the indoor space and the floor generally falls below the target temperature. However, heating the indoor space by performing space heating can obtain a heating effect more quickly than heating the indoor floor by performing floor heating. That is, assuming that the same heating capability, the temperature of the indoor space can be raised more quickly than the temperature of the indoor floor when performing the floor heating, when performing the space heating. Therefore, as in the present embodiment, in the initial stage of operation, space heating is preferentially performed rather than floor heating, so that the user can feel the heating effect more quickly.

Hereinafter, a third embodiment of a heat pump interlocking hot water supply apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

8 is a flowchart showing a third embodiment of the control method of the heat pump interlocking hot water supply device according to the present invention.

Referring to FIG. 8, first, whether floor heating is performed is checked (S41), and when floor heating is started (S42), the heating operation time is initialized (S43). Then, the heating operation time is accumulated (S44). In this case, the heating operation time may be regarded as a time variable that means the time taken to start and complete the floor heating. That is, the initializing of the heating operation time means determining a start time point at which the heating operation time is accumulated. In addition, whether the floor heating is performed may be performed in various ways, for example, a method of detecting whether a signal for performing floor heating is input.

Next, as long as the heating operation time does not correspond to the limit time (S45), the heating operation time is continuously integrated until the floor heating is stopped by checking whether the floor heating is again performed (S46) (S47) (S44). ).

In this case, the limit time means a minimum reference time for determining whether the current heating capacity can reach a condition corresponding to the target. That is, even though the time limit has passed, when the current condition does not reach the target condition (S45), it means that the current heating capacity is insufficient to reach the target condition. Therefore, in this case, the operation state is changed in a direction that can raise the temperature of the heating water. For example, by increasing the operation rate of the compressor 106 (S49), the temperature of the heating water can be increased and the heating capacity can be improved.

On the other hand, by checking whether the floor heating (S46), when the floor heating is stopped (S47), the integrated heating operation time is compared with the maximum target time and the minimum target time (S48). If the heating operation time exceeds the maximum target time (S48), the driving state is changed in a direction in which the temperature of the heating water rises. For example, by increasing the operation rate of the compressor 106 (S49), the heating capacity can be improved. When the heating operation time is less than the minimum target time (S48), the driving state is changed in a direction in which the temperature of the heating water decreases. For example, by reducing the operation rate of the compressor 106 (S50), the heating capacity can be reduced. On the other hand, if the heating operation time is between the minimum target time and the maximum target time (S50), it may be passed to the next step without changing the cloud state (S52).

In this case, the maximum target time and the minimum target time mean an upper limit value and a lower limit value of an appropriate time required for the floor temperature to reach the target temperature through the heating operation. That is, the maximum target time means a time at which the user does not feel any inconvenience due to the delay of heating in the time taken to reach the target condition during the heating operation. In addition, the minimum target time means a time at which the energy loss is not excessively large due to the excessive heating capacity being applied in the time taken to reach the target condition during the heating operation.

When the heating operation time exceeds the maximum target time, the heating capacity is improved, and when the heating operation time is less than the minimum target time, the heating capacity is reduced, so that the heating operation time is the maximum target time and the minimum. It may be controlled to correspond to between the target time.

On the other hand, after the operation state is changed to increase or decrease the temperature of the heating water, as long as there is no input of the operation stop signal (S52), the process may be repeated by checking whether the floor is heated (S41).

According to this embodiment, there is an advantage that the heating capacity of the heat pump interlocking hot water supply device can be adjusted to a level suitable for floor heating. In more detail, if the heating capacity is too large, the heating target condition is reached quickly, but the energy loss amount is increased. If the heating capacity is too small, the time to reach the heating target condition is long, and the user may feel uncomfortable. There is. However, in the present embodiment, since the heating operation time is controlled in a direction that may fall within a preset range, that is, between the maximum target time and the minimum target time, the amount of energy loss can be reduced and the user's inconvenience can be prevented. There is an advantage to that.

In addition, in adjusting the heating capacity, for example, the operation rate of the compressor 106, etc., since it is based on the heating operation time, there is an advantage that it is not necessary to consider the floor material or the outside temperature. In more detail, even if the same heating capacity is assumed, the heat diffusion rate may vary according to the material of the floor on which the heat pump interlocking hot water supply device is installed, and the floor temperature may vary according to the outside temperature, thereby reaching the target condition. The time taken may vary. However, in this embodiment, since the heating ability is controlled based on the time taken to reach the target condition, that is, the heating operation time, the heating operation time can be guaranteed regardless of the floor material or the outside temperature.

As such, within the scope of the basic technical idea of the present invention, many modifications are possible to those skilled in the art, and the scope of the present invention should be interpreted based on the appended claims. will be.

2: main refrigerant circuit 4: hot water heat exchanger
6: refrigerant control unit 8: heat exchanger bypass flow path
10: auxiliary refrigerant control unit 12: compressor
14: outdoor heat exchanger 16: outdoor expansion device
17: indoor expansion mechanism 18: indoor heat exchanger
40: cooling / heating switching valve 50: hot water supply flow path
52: hot water inflow channel 54: hot water inflow channel
60: hot water pump 72: water refrigerant heat exchanger
74: heating inflow channel 76: heating inflow channel
84: floor heating pump 86: water refrigerant heat exchanger refrigerant control unit
88: heat exchanger bypass valve 90: liquid refrigerant valve

Claims (10)

Heat pump interlocking heating including a heat pump for heating or cooling an indoor space using a refrigerant cycle, and a floor heating device for exchanging water between the refrigerant of the heat pump and water, and performing indoor floor heating using heat exchanged water. In the control method of the device,
Starting operation of the heat pump peristaltic heating device, and detecting an indoor floor temperature;
Comparing the sensed indoor floor temperature with a target temperature; And
And varying an operation rate of a compressor of the heat pump according to a comparison result between the indoor floor temperature and a target temperature. The method of claim 1,
If the detected indoor floor temperature exceeds the target temperature, the control method of the heat pump interlocking heating device to reduce the operation rate of the compressor. The method of claim 1,
If the detected indoor floor temperature is less than the target temperature, the control method of the heat pump interlocking heating device to increase the operation rate of the compressor. The method of claim 1,
The indoor floor temperature sensor for detecting the indoor floor temperature is installed on the indoor floor or a control method of the heat pump interlock heating device installed on the remote control for inputting the operation command to the heat pump. Heat pump interlocking heating including a heat pump for heating or cooling an indoor space using a refrigerant cycle, and a floor heating device for exchanging water between the refrigerant of the heat pump and water, and performing indoor floor heating using heat exchanged water. In the control method of the device,
Starting operation of the heat pump interlock heating device and sensing a temperature of an indoor space;
If the detected temperature of the indoor space is lower than the target indoor temperature, performing heating of the indoor space;
Detecting the indoor floor temperature when the temperature of the indoor space reaches a target indoor temperature while performing heating of the indoor space; And
And determining whether floor heating is to be performed according to a comparison result between the indoor floor temperature and the target floor temperature. Heat pump interlocking heating including a heat pump for heating or cooling an indoor space using a refrigerant cycle, and a floor heating device for exchanging water between the refrigerant of the heat pump and water, and performing indoor floor heating using heat exchanged water. In the control method of the device,
The operation of the heat pump interlock heating device is started, and the indoor space is first heated by heating; And
When the temperature of the indoor space reaches the target room temperature, the control method of the heat pump interlocking heating device comprising the step of performing indoor floor heating. Heat pump interlocking heating including a heat pump for heating or cooling an indoor space using a refrigerant cycle, and a floor heating device for exchanging water between the refrigerant of the heat pump and water, and performing indoor floor heating using heat exchanged water. In the control method of the device,
Determining a heating operation time between the floor heating operation start time and the stop time;
Comparing the heating operation time with the target time; And
And controlling the compressor operation rate of the heat pump according to a comparison result of a heating operation time and a target time. The method of claim 7, wherein
The control method of the heat pump interlocking heating device to increase the operation rate of the compressor when the heating operation time exceeds the maximum target time. The method of claim 7, wherein
If the heating operation time is less than the minimum target time control method of the heat pump interlocking heating device to reduce the operation rate of the compressor. The method of claim 7, wherein
When the heating operation time exceeds the limit time before starting the floor heating operation is stopped, the control method of the heat pump interlocking heating device to increase the operation rate of the compressor.

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