KR20120083139A - Heat pump type speed heating apparatus - Google Patents

Abstract

The present invention relates to a heat pump type hot water supply device, and in particular, a first refrigerant circuit for circulating a hydrokit heat exchanger for exchanging refrigerant and water used by a compressor, and a refrigerant compressed by the compressor and room air are heat-exchanged. A second refrigerant circuit circulating in the indoor heat exchange unit, and a refrigerant control unit configured to adjust the refrigerant compressed by the compressor to flow through at least one refrigerant circuit of the first refrigerant circuit and the second refrigerant circuit, The first refrigerant circuit is arranged to connect the temperature detection unit disposed in the hydrokit heat exchanger inlet flow passage to detect the temperature of the inlet refrigerant, and connected to the hydrokit heat exchanger inlet flow passage and the hydrokit heat exchanger outlet flow passage. A refrigerant bypass flow path is provided to bypass the refrigerant before it is introduced, thereby making it possible to It provides an advantage of preventing the heating capacity of the heat pump type hot water supply device is lowered by the lowered refrigerant.

Description

Heat pump type hot water supply device

The present invention relates to a heat pump type hot water supply device, and more particularly, by preventing a refrigerant having a temperature lowered from the outside of the indoor unit from entering the indoor unit by using an indoor unit control unit, thereby preventing the temperature of the hot water supply unit or the heating unit from being lowered. It relates to a heat pump type hot water supply device to improve the emotional quality of the heating performance.

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

The heat pump includes a compressor, a condenser, an expansion device, and an evaporation device, and recently, a heat pump type hot water supply device that can be used for hot water supply by heating water with a refrigerant to minimize the consumption of fossil fuels has been developed.

However, the heat pump type hot water supply apparatus according to the prior art has a problem that the hot water performance may be deteriorated since the refrigerant passing through the hot water heat exchanger passes through both the outdoor heat exchanger, the expansion mechanism, and the indoor heat exchanger to condense, expand, and evaporate.

On the other hand, the heat pump type hot water supply apparatus according to the prior art is disposed outdoors with the outdoor unit, and is provided with a hydrokit heat transfer unit including the hot water supply heat exchanger. By the way, the refrigerant mechanically passes through the refrigerant pipe connecting the hydrokit heat transfer unit and the outdoor unit, and mechanically, the refrigerant passes through the refrigerant pipe and causes a predetermined heat loss, and the heat lost refrigerant causes the hydrokit. There is a problem that the minimum performance compared to the temperature during heating is not guaranteed by being transferred to the indoor side as it is through the heat transfer unit.

In order to solve the above problems, conventional control is performed to forcibly prevent heat transfer through the hydrokit heat transfer unit through indoor unit heating control, but the indoor temperature decreases continuously due to mechanical penetration of the refrigerant causing the above-described heat loss. There was a problem that caused.

The present invention has been made in order to solve the above technical problem, by using the indoor unit control the refrigerant flowing into the hydrokit heat transfer unit from the outside by using a bypass passage in advance to block the inflow of the refrigerant is introduced into It is an object of the present invention to provide a heat pump type hot water supply device which can prevent the heating capacity from being reduced.

Heat pump type hot water supply apparatus according to the present invention,

The heat pump type hot water supply device according to the present invention has an effect of preventing the heating capability from being reduced by blocking the inflow of the refrigerant having a temperature lowered from the outside into the hydrokit heat transfer unit from the outside using the indoor unit controller.

In addition, the heat pump type hot water supply apparatus according to the present invention has an effect of preventing freezing of the hydrokit heat transfer part disposed on the outdoor side.

1 is a schematic view showing an embodiment of a heat pump type hot water supply apparatus according to the present invention,
Figure 2 is a block diagram showing a preferred embodiment of a heat pump type hot water supply apparatus according to the present invention,
3 is a conceptual view illustrating a part of a hydrokit heat transfer unit in which a bypass flow path is disposed in the configuration of FIG. 2;
4 to 6 is a block diagram showing the flow of the refrigerant for each operation mode of the heat pump type hot water supply apparatus according to the present invention.

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

1 is a schematic view showing an embodiment of a heat pump type hot water supply apparatus according to the present invention, Figure 2 is a block diagram showing a preferred embodiment of a heat pump type hot water supply apparatus according to the present invention, Figure 3 is 4 is a conceptual diagram illustrating a flow of a refrigerant for each operation mode of the heat pump type hot water supply device according to the present invention.

As a preferred embodiment of the heat pump type hot water supply apparatus according to the present invention, the refrigeration cycle circuit 2, the hot water supply heat exchanger 74, the refrigerant control unit 6, the heat exchanger The bypass flow path 8, the auxiliary refrigerant control unit 10, and the refrigerant bypass flow path 200 are included.

The refrigeration cycle circuit 2 may include a compressor 12, an outdoor heat exchanger 14, an expansion mechanism 16, 17, and an indoor heat exchanger 18 to cool or air condition the room.

The air conditioning operation of the refrigeration cycle circuit 2 may include a space heating operation for sucking air in the room and air conditioning and a space cooling operation for cooling air conditioning by sucking the air in the room.

In the refrigeration cycle circuit 2, an accumulator 24 is installed in the suction passage 22 of the compressor 12 to prevent liquid refrigerant from flowing into the compressor 12, and the discharge passage 26 of the compressor 12 is provided. ), An oil separator 28 separating oil from the refrigerant discharged from the compressor 12 and oil and recovering the oil from the compressor 12 is installed.

The outdoor heat exchanger 14 is configured to condense or evaporate the refrigerant, and may be configured as an air refrigerant heat exchanger in which outdoor air is heat-exchanged with the refrigerant, or may be configured as a water refrigerant heat exchanger in which the coolant is heat-exchanged with the refrigerant.

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.

In addition, the expansion mechanisms 16 and 17 are installed in the heat exchanger connection pipe 32. The expansion mechanisms 16 and 17 include an outdoor expansion mechanism 16 installed close to the outdoor heat exchanger 14 among the outdoor heat exchanger 14 and the indoor heat exchanger 18, and an indoor heat exchanger with the outdoor heat exchanger 14. And an indoor expansion mechanism (17) installed in proximity to the indoor heat exchanger (18).

The heat exchanger connection pipe 32 includes 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 an outdoor expansion device 16 and an indoor expansion device 17. ) Is connected to the expansion mechanism connecting pipe 36, and the indoor expansion mechanism 17 and the indoor heat exchanger (18) connected to the indoor expansion mechanism (17).

The indoor heat exchanger 18 cools or heats the room while the indoor air is heat-exchanged with the refrigerant, and the indoor fan 39 is installed to circulate the indoor air to the indoor heat exchanger 18.

The refrigeration cycle circuit 2 recovers the refrigerant compressed by the compressor 12 through the outdoor heat exchanger 14, the expansion mechanism 16, 18, and the indoor heat exchanger 18 sequentially and then returns to the compressor 12. In addition, the indoor heat exchanger 18 may function as an evaporator and may be configured as a cooling air conditioner that cools indoor air. On the contrary, the refrigerant compressed in the compressor 12 may include the indoor heat exchanger 18 and the expansion mechanism. It is also possible to comprise a heating air conditioner for heating the indoor air while sequentially functioning the (16) and (17) and the outdoor expansion mechanism (14), the refrigerant compressed in the compressor 12 is an outdoor heat exchanger (14) during heating operation ) And then pass through the expansion mechanism (16) (17) and the indoor heat exchanger (18) in sequence and is recovered by the compressor (12) and during the cooling operation the indoor heat exchanger (18) and the expansion mechanism (16) (17) and the outdoor Combined cooling and heating process to pass through the heat exchanger (14) and then to the compressor (12) It is also possible to comprise a vaporizer.

The refrigeration cycle circuit 2 is preferably installed in the indoor heat exchanger 18 to cool or heat the room. Hereinafter, the refrigeration cycle circuit 2 will be described as being configured as a combined air conditioning and air conditioner that can switch between cooling and heating operations.

The refrigeration cycle circuit 2 allows the refrigerant to flow in the order of the compressor 12, the outdoor heat exchanger 14, the expansion mechanism 16, 17, and the indoor heat exchanger 18, or the compressor 12 and the indoor heat exchanger. 18 and the expansion mechanism 16, 17 and the outdoor heat exchanger 14 may further include a cooling and heating switching valve 40 to flow.

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. Unit 18 and the indoor heat exchanger connecting pipe (44).

On the other hand, the refrigeration cycle circuit (2) does not allow the refrigerant to flow directly to the cooling and heating switching valve 40 by the refrigerant control unit 6, but to flow to the hydrokit heat exchange unit (H) side that performs the function of the hot water heat exchanger. Then, it may be configured to flow to the cooling and heating switching valve 40 or the outdoor heat exchanger 14 through the auxiliary refrigerant control unit 10.

Here, the hydrokit heat exchanger (H), although not shown in the drawings, may be divided into a first heat exchanger of the hot water supply unit performing a hot water supply function and a second heat exchanger of the floor heating unit performing a floor heating function, In the following description, the hot water supply unit and the floor heating unit are indicated by the reference numeral 100.

The first heat exchanger performs a function of a hot water supply heat exchanger as a heat exchanger for generating hot water for hot water supply, while the second heat exchanger heat exchanges water to generate hot water by heat-exchanging water flowing through a water pipe for an indoor floor heating unit. It is also possible to be provided to perform a function as a water refrigerant heat exchanger.

The hydrokit heat exchanger H is connected to the hydrokit heat exchanger inflow passage 52 so that the refrigerant discharged from the compressor 12 flows in, and the hot water heat exchanger 74 of the hydrokit heat exchanger H (first heat exchange). And the refrigerant flowed out from the second heat exchanger) are connected to the hydrokit heat exchange part outlet passage 54 so as to flow to the air conditioning switch 40.

That is, the inflow flow path 52 and the outflow flow path 54 of the hydrokit heat exchange part H are respectively connected between the compressor 12 and the air-conditioning switching valve 40, respectively.

Here, when the refrigerant is introduced by the refrigerant control unit 6, the first heat exchanger is a kind of desuperheater that causes the refrigerant superheated in the compressor 12 to condense while heat-exchanging with the water used for the hot water supply. Play a role.

The hydrokit heat exchanger H may have a refrigerant flow path through which the superheated refrigerant passes, and use water circulation circuits 58a and 58b for receiving water from the superheated refrigerant.

Here, the hot water supply heat exchanger 74 may be a double tube heat exchanger formed inside and outside the coolant flow path and the use water circulation circuits 58a and 58b with a heat transfer member interposed therebetween, and the coolant flow path and the use water circulation circuit 58a ( It is also possible for 58b) to consist of a plate heat exchanger formed alternately with a heat transfer member therebetween. In particular, in the case of a plate heat exchanger, the mechanical heat loss of the refrigerant is concerned on the outdoor side, and the present invention is derived to prevent a decrease in the heating capacity due to the mechanical heat loss of the refrigerant as described above. For convenience of description, the hot water supply heat exchanger 74 will be described on the premise that it is a plate heat exchanger.

The water supply circulation circuit 58b, which is a water pipe flowing into the hydrokit heat exchanger H side of the water circulation circuit 58a and 58b, particularly the water circulation circuit 58a and 58b, has a hot water pump for circulation of the water. 60) can be installed.

As such, the use water circulated by the hot water pump 60 receives heat from the superheated refrigerant while passing through the hydrokit heat exchange part H, and the supplied heat is circulated out of the use water in the use water circulation circuits 58a and 58b. The water can be stored in the water used in the hot water tank while passing through the hot water tank (or heat storage tank) 56 along the circuit 58a. The stored water is selectively discharged by the user through the water outlet 64 for at least one of the floor heating unit and the hot water supply unit 100 as described above. Unexplained reference numeral 62 is a water supply part 62 for supplying hot water use water to the hot water supply tank 56.

The heat pump type hot water supply device is used for air-conditioning heating the interior of the refrigerant flows directly to the cooling / heating switching valve 40 side by the refrigerant control unit 6 (this is referred to as an indoor air conditioning cooling / heating operation mode for convenience of description). ), The refrigerant flows to the hydrokit heat exchanger (H) to heat the indoor floor (referred to as the indoor floor heating operation mode for convenience of explanation), or to obtain hot water supply hot water (this is for convenience of description) It is also possible to make it flow to the refrigeration cycle circuit 2 after the hot water supply operation mode).

Refrigerant control unit 6 is the refrigerant discharged from the compressor 12 in accordance with the operation mode of the heat pump type hot water supply device passes through the hot water supply heat exchanger 74 of the hydrokit heat exchanger (H), or the heating and cooling switching valve 40 Adjust the flow direction of the refrigerant to pass through.

Hereinafter, the adjustment process of the refrigerant control unit 6 will be described in detail for each operation mode.

That is, when the operation of the heat pump type hot water supply device includes at least one of a hot water operation mode and a floor heating operation mode, the refrigerant control unit 6 includes the refrigerant compressed by the compressor 12 in the hydrokit heat exchanger ( H), and when the operation of the heat pump type hot water supply device does not include both the hot water operation mode and the floor heating operation mode, the refrigerant compressed in the compressor 12 is immediately flowed to the air-conditioning switching valve 40 side. Adjusted.

In addition, the refrigerant control unit 6 is adjusted to flow the refrigerant to the hydrokit heat exchange unit (H) during the simultaneous operation of at least one of the hot water operation mode and the floor heating operation mode and the indoor air conditioning heating operation mode.

The refrigerant control unit 6 may be provided as a one-way valve installed in the refrigeration cycle circuit 2 to select a refrigerant outflow direction.

When the refrigerant control unit 6 is provided as a three-way valve, the inlet portion and the first outlet portion are connected to the compressor outlet passage 26, and the second outlet portion is connected to the hydrokit heat exchange portion inlet passage 52.

The refrigerant control unit 6 is installed between the compressor 12 and the air-conditioning switching valve 40 of the compressor outflow passage 26, and includes at least one of a hot water supply operation and a floor heating operation of the heat pump type hot water supply device. At least one of the first valve (not shown) and the hydrokit heat exchanger inlet flow passage 52 which is closed when the air conditioning operation is performed and is opened when the indoor air conditioning operation is installed, is installed in the hydrokit heat exchange part inflow passage 52. It may also be provided to include a second valve that is opened when the operation including one, and closed when the air conditioning operation.

Meanwhile, the heat exchanger bypass flow path 8 passes through the hot water supply heat exchanger 74 such that the refrigerant passing through the hydrokit heat exchanger H bypasses one of the outdoor heat exchanger 14 and the indoor heat exchanger 18. A refrigerant is connected to guide the outdoor heat exchanger 14 and the indoor heat exchanger 18.

One end of the heat exchanger bypass passage 8 is connected to the hydrokit heat exchange part outlet passage 54, and the other end thereof is connected between the indoor expansion mechanism 17 and the outdoor expansion mechanism 16.

More specifically, the heat exchanger bypass flow path 8 has one end connected to the hydrokit heat exchange part outlet flow path 54, and the other end connected to the expansion mechanism connection pipe 36, and the hydrokit heat exchange part outlet flow path 54 Is guided 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 by the compressor (12) or after expansion in the outdoor expansion mechanism (16). Evaporated by the outdoor heat exchanger (14) and recovered by 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 refrigeration cycle circuit 2 does not generate a condensation process but an expansion process and an evaporation process. Only is generated, the heat transfer amount of the hydrokit heat exchanger (H) is increased, the hot water supply efficiency and the floor heating efficiency is increased.

The auxiliary refrigerant control unit 10 adjusts the flow direction of the refrigerant that has passed through the heat exchanger bypass flow path (8) or passes through the hydrokit heat exchange unit (H) to pass through the heat exchanger bypass flow path (H). do.

That is, when the operation of the heat pump type hot water supply device includes two operations of a hot water supply operation and an indoor air conditioning operation, the auxiliary refrigerant control unit 10 includes a refrigerant passing through the hydrokit heat exchanger H and the heat exchanger bypass flow path ( 8) to bypass.

In addition, the auxiliary refrigerant control unit 10, the operation of the heat pump type hot water supply device is the refrigerant passing through the hydrokit heat exchange unit (H) during the simultaneous operation of hot water operation, floor heating operation and air conditioning operation heat exchanger bypass flow path (8) ) Is bypassed.

However, the auxiliary refrigerant control unit 10 passes through the hydrokit heat exchange unit H when the operation of the heat pump type hot water supply device includes one of hot water operation and floor heating operation, and does not include indoor air conditioning operation. One refrigerant is regulated to flow into the heat exchanger bypass flow path 8.

Meanwhile, when the operation of the heat pump type hot water supply device is the defrosting operation of the outdoor heat exchanger 14, the auxiliary refrigerant control unit 10 is converted from the hot water supply mode operation to the defrost mode operation and passes through the hydrokit heat exchanger H. One refrigerant is controlled to bypass the heat exchanger bypass flow path 8, where the refrigeration cycle circuit 2 is switched from the heating operation mode to the cooling operation mode for defrosting the outdoor heat exchanger 14, and the outdoor heat exchanger. The flag 14 is defrosted. In particular, in this case, since the refrigerant having passed through the hydrokit heat exchanger H is already condensed first by exchanging heat with the use water of the use water circulation circuits 58a and 58b, the refrigerant may be outdoor by using the refrigerant in the first condensed state. Defrosting the heat exchanger 14 is expected to cause a temporary deterioration of the defrosting efficiency.

The auxiliary refrigerant control unit 10 may also be configured as a three-way valve, and when provided as a three-way valve, the inlet part and the first outlet part are connected to the hydrokit heat exchange part outlet flow path 54, and the second outlet part is provided. It is connected to the heat exchanger bypass flow path (8).

However, the auxiliary refrigerant control unit 10 is not necessarily provided as a three-way valve, and is installed between the hydrokit heat exchanger outlet flow passage 54 and the air-conditioning switching valve 40 to include a hot water supply operation and an indoor air conditioning operation. A first valve that is opened when the operation is performed or includes a floor heating operation and an indoor air conditioning operation, and is sealed when the operation includes at least one of a floor heating operation and a hot water operation operation and does not include an indoor air conditioning operation. Installed in the bypass flow path (8), the operation includes a hot water heating operation and indoor air conditioning operation, or is closed when the operation includes a floor heating operation and indoor air conditioning operation, and includes at least one of floor heating operation and hot water operation Naturally, it is also possible to include a second valve that opens when the operation does not include air conditioning.

The heat pump type hot water supply apparatus according to the present invention includes a heat exchanger bypass valve 88 installed in the heat exchanger bypass flow path 8 to regulate a flow of refrigerant, a 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 in the simultaneous operation of the hot water operation and the floor heating operation, the floor heating operation or the hot water operation, and is open to the indoor air conditioning operation or the simultaneous operation of the indoor air conditioning operation and the hot water operation, or the indoor air conditioning operation and the hot water operation. It is closed in the case of simultaneous operation of floor heating and floor heating.

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

Hereinafter, for convenience of description, the flow of the refrigerant recovered by the compressor 12 to the compressor 12 after passing through the hydrokit heat exchange unit H will be referred to as a first refrigerant circuit. The flow of the refrigerant circulating in the indoor heat exchanger 18 where the refrigerant compressed by the compressor 12 and the indoor air are heat exchanged will be referred to as a second refrigerant circuit.

The refrigerant controller 6 controls the refrigerant compressed by the compressor 12 to flow through at least one refrigerant circuit of the first refrigerant circuit and the second refrigerant circuit.

As shown in FIGS. 2 and 3, the first refrigerant circuit includes a temperature detector 200a arranged in the hydrokit heat exchange part inflow passage 52 and detecting a temperature of the refrigerant flowing therein, and a hydrokit heat exchange part inflow passage ( 52 and a refrigerant bypass flow path 200 disposed to connect the hydrokit heat exchange part outlet flow path 54 to bypass the refrigerant before the refrigerant flows into the hydrokit heat exchange part H.

The refrigerant bypass flow path 200 is preferably provided in the hydrokit heat exchanger to form a configuration of the hydrokit heat exchanger H, and is provided outside the hot water heat exchanger 74 so that the refrigerant is supplied to the hot water heat exchanger 74. It is a role to prevent the refrigerant having a substantially temperature drop before entering the interior of the heat exchange with the use water.

As described above, the temperature detection unit 200a may be provided only in the hydrokit heat exchange part inflow passage 52, and as shown in FIG. 2, the refrigerant temperature and the hot water supply before entering the hot water heat exchanger 74 are referred to. The hydrokit heat exchange part outflow passage 54 may further include at least one temperature detector 200b so as to check the coolant temperature drop by using the coolant temperature difference discharged from the heat exchanger.

The refrigerant bypass flow path 200 is a condensed refrigerant when the first refrigerant circuit is activated during the heating mode operation of the heat pump type hot water supply device and the temperature of the refrigerant detected by the temperature detection units 200a and 200b is equal to or lower than a set value. And water may be activated to bypass the refrigerant so that the water is not heat exchanged in the hydrokit heat exchanger.

In the heat pump type hot water supply apparatus according to the present invention, as described above, the hydrolysis of the refrigerant and the water used is actually performed by using the temperature detectors 200a and 200b disposed on the first refrigerant circuit corresponding to the outdoor side. By blocking the heat exchange in the kit heat exchanger in advance, the performance can be prevented from being reduced below the heating capacity desired by the consumer.

On the other hand, the refrigerant bypass flow path 200, the condensed refrigerant and the water used in the heat exchanger (H) of the heat exchanger (14) of the heat pump type hot water supply device during the defrost mode operation or the oil recovery mode operation of the compressor 12 The refrigerant may be activated to bypass the hydrokit heat exchanger H so as not to exchange heat.

In addition, the refrigerant bypass flow path 200 is a hydrokit heat exchange part when the defrost mode operation of the outdoor heat exchanger 14 of the heat pump type hot water supply device and the oil recovery mode operation of the compressor 12 are released. The refrigerant may be inactivated to flow to bypass the refrigerant bypass flow path 200 to exchange heat in (H).

Heat pump type hot water supply apparatus according to the present invention, while operating in the heating mode operation, if the defrost mode operation is required when switching to the cooling mode by using the water and the primary condensed refrigerant from the hydrokit heat exchanger (H) for a while The defrosting time is increased by defrosting the outdoor heat exchanger 14 during the defrost mode operation, and the refrigerant flows to bypass the hydrokit heat exchanger H immediately through the refrigerant bypass flow path 200 when switching to the defrost mode operation. There is an advantage that can be solved by.

On the other hand, the reference for activating the refrigerant bypass flow path 200, as described above, based on the detected value of the refrigerant temperature before and after the hydrokit heat exchanger (H), or is operated for each operation mode of the heat pump type hot water supply device It should be noted that it is determined by the driving mode, but is not necessarily limited thereto.

Referring to FIG. 3, an example of the use water circulation inlet circuit 58a into which the water is introduced into the hydrokit heat exchange part H and the use water circulation outlet circuit 58b from which the use water flows out from the hydrokit heat exchange part H are illustrated. (I.e., inlet and outlet pipes), respectively, with an inlet temperature sensor (not shown) and an outlet temperature sensor (not shown), and the refrigerant bypass flow path 200 is detected by the inlet temperature sensor or the outlet temperature sensor. It is also possible to determine whether to activate according to the inlet and outlet temperature of the water used.

More specifically, when at least one of the inlet temperature sensor and the outlet temperature sensor is below the first set temperature (preferably 5 degrees Celsius or less), the refrigerant bypass flow path 200 is activated, and the inlet temperature sensor and the outlet temperature It is also possible to be configured to deactivate the refrigerant bypass flow path 200 when all the sensors are above the second set temperature (preferably above 8 ° C).

Meanwhile, the hydrokit heat exchange part inflow passage 52 corresponding to the refrigerant bypass flow path 200 and the hydrokit heat exchange part H may further include an expansion valve 53 for controlling expansion of the refrigerant. The valve 53 is controlled to close when the refrigerant bypass flow path 200 is activated, and thus may serve as an open / close valve.

In the heat pump type hot water supply apparatus according to the present invention having such a configuration, the refrigeration cycle circuit 2 may constitute a separate type air conditioner having an outdoor unit O and an indoor unit I, and the hydrokit heat exchange unit H May be provided independently from the outdoor unit (O) so that the outdoor unit (O) is connected, and the refrigerant bypass flow path (200) has a configuration inside the hydrokit heat exchange unit (H) provided independently of the outdoor unit (O). It is also possible to be provided.

On the other hand, the compressor 12, the air-conditioning switching valve 40, the outdoor heat exchanger 14, the outdoor expansion mechanism 16 and the outdoor fan 30 is installed in the outdoor unit (O).

The indoor expansion mechanism 17, the indoor heat exchanger 18, and the indoor fan 39 are installed in the indoor unit I.

Naturally, the hot water heat exchanger 74, the hot water pump 60, and the refrigerant bypass flow path 200 may be installed in the hydrokit heat exchanger H.

As described above, the heat pump type hot water supply apparatus according to the present invention includes a refrigerant bypass flow path 200 separately in the hydrokit heat exchange part H, and flows along the hydrokit heat exchange part inflow path (or refrigerant pipe) in the outdoor side. When there is a sudden drop in temperature corresponding to the mechanical heat loss of the refrigerant to be lost, or when there is a concern about a loss of the heating capacity expected by the consumer, the refrigerant bypass flow path 200 is activated to prevent the refrigerant from the outdoor side from being exchanged with the use water. Since it can be cut off, the heating capability of the heat pump type hot water supply device can be prevented from being lowered.

Referring to the operation process of the operation mode of the heat pump type hot water supply apparatus according to the present invention configured as described above in detail as follows.

First, as shown in FIG. 4, in the general floor heating operation mode or the hot water operation mode or the indoor air conditioning heating mode of the heat pump type hot water supply device, the compressor 12 is driven and the refrigerant control unit 6 is a refrigerant. Is controlled to flow toward the hydrokit heat exchanger (H), the expansion valve 53 is closed controlled so that the refrigerant bypass flow path 200 is not activated, the auxiliary refrigerant control unit 10 is the hydrokit heat exchanger outlet flow path The refrigerant of 54 is adjusted to bypass the heat exchanger bypass flow path 8, the outdoor fan 30 and the indoor fan 39 are rotated, and the air conditioning switching valve 40 is driven in a heating mode. The bypass valve 88 is closed, the liquid refrigerant valve 90 is opened, and the hot water pump 60 is driven.

When the hot water pump 60 is driven, the use water circulation circuits 58a and 58b are activated, and the use water is heat-exchanged with the refrigerant in the hydrokit heat exchanger H to obtain heat and then accumulate heat in the hot water supply tank 56.

When the compressor 12 is driven, the refrigerant compressed by the compressor 12 passes through the refrigerant control unit 6 and the hydrokit heat exchange part inflow passage 52, and then flows into the hot water heat exchanger 74. While passing through 74, the superheated refrigerant in the compressor 12 exchanges heat with the use water to condense.

The refrigerant condensed in the hot water supply heat exchanger (74) passes through the hydrokit heat exchange part outlet flow passage (54), passes through the auxiliary refrigerant control unit (10), and flows to the heating and cooling switching valve (40). In 18), it condenses again as it exchanges heat with indoor air.

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 evaporates in the outdoor heat exchanger 14. The refrigerant evaporated in the outdoor heat exchanger 14 is recovered through the air-conditioning switching valve 40 to the compressor 12.

In this case, it is a normal case in which there is no temperature drop of the outdoor refrigerant, and it is not necessary to activate the refrigerant bypass flow path 200.

However, as shown in FIG. 5, the outdoor side refrigerant detected by the temperature detectors 200a and 200b (more specifically, the refrigerant of the hydrokit heat exchanger inlet flow passage 52 or the outlet flow passage 54). When the temperature is lower than the set value, the refrigerant bypass flow path is controlled to activate the condensed refrigerant and the use water so that heat exchange does not occur in the hydrokit heat exchange part (H).

In this case, the indoor unit I control and the outdoor unit O control are the same as those referred to in FIG. 4 except for whether the refrigerant bypass flow path 200 is activated.

As such, by activating the refrigerant bypass flow path 200, the use water is heat-exchanged through the refrigerant having a substantially lowered temperature, thereby preventing the heating capability of the heat pump type hot water supply device from being reduced.

On the other hand, as shown in Figure 6, the operation of the heat pump type hot water supply apparatus according to the present invention in the heating operation mode for the defrost of the outdoor heat exchanger 14 of the outdoor unit (O) or the oil of the compressor 12 When switched to the defrosting operation mode or the oil recovery operation mode for recovery, the refrigerant compressed by the compressor 12 passes through the refrigerant bypass flow path 200 that is activated before passing through the hydrokit heat exchange unit (H), The refrigerant passing through the refrigerant bypass passage 200 regulates the auxiliary refrigerant control unit 10 to bypass the heat exchanger bypass passage 8, and moves the refrigeration cycle circuit 2 from the heating operation mode to the cooling operation mode. Switch.

Here, the defrosting condition switched to the defrosting operation mode may correspond to a case where an integration time of the hot water supply operation is longer than the set time or a condition that the temperature of the outdoor heat exchanger 14 is longer than the set time or less than the set temperature is satisfied.

In the heat pump type hot water supply device according to the present invention, in the case of the defrosting operation mode or the oil recovery operation mode, the refrigerant required for the defrosting can be defrosted at a higher temperature, so that the refrigerant is used in the hydrokit heat exchanger (H). By deactivating the refrigerant bypass flow path 200 to pass through the refrigerant bypass flow path 200 so as not to exchange heat with the primary defrosting in the outdoor heat exchanger 14 and condensing, the defrosting time is shortened to some extent. It has an effect that can be done.

Or more, with reference to the accompanying drawings, a preferred embodiment and various embodiments of the heat pump type hot water supply apparatus according to the present invention was described in detail. However, embodiments of the present invention are not necessarily limited thereto, and it is obvious that various modifications or other embodiments falling within the scope equivalent to the present invention may be implemented by those skilled in the art. Therefore, the true scope of the present invention will be defined by the claims below.

2: refrigeration cycle circuit 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 device
18: indoor heat exchanger 40: air conditioning switch
52: inflow passage of the hydrokit heat exchange part 54: outflow passage of the hydrokit heat exchange part
60: hot water pump 74: hot water heat exchanger
200: refrigerant bypass flow path 200a, 200b: temperature detection unit

Claims (8)

A first refrigerant circuit configured to circulate a hydrokit heat exchange part through which the refrigerant compressed by the compressor and the use water are heat exchanged;
A second refrigerant circuit configured to circulate an indoor heat exchanger in which the refrigerant compressed by the compressor and the indoor air are heat exchanged;
And a refrigerant control unit configured to control the refrigerant compressed by the compressor to flow through at least one refrigerant circuit of the first refrigerant circuit and the second refrigerant circuit.
In the first refrigerant circuit, the hydrokit heat exchanger is arranged to connect a temperature detector that is disposed in the hydrokit heat exchanger inlet flow passage and detects the temperature of the inlet refrigerant, and connects the hydrokit heat exchanger inflow passage and the hydrokit heat exchanger outlet flow passage. Heat pump type hot water supply device having a refrigerant bypass flow path for bypassing the refrigerant before it is introduced into the unit.
The method according to claim 1,
The refrigerant bypass flow path is a heating mode operation,
And the first refrigerant circuit is activated, and the heat pump hot water supply device is activated to prevent heat from being condensed in the hydrokit heat exchange part when the temperature of the refrigerant detected by the temperature detector is lower than or equal to a set value.
The method according to claim 1,
In the heating mode operation, further comprises an outdoor heat exchanger for evaporating the refrigerant,
The refrigerant bypass flow path,
And the first refrigerant circuit is activated and is activated when the first refrigerant circuit is operated in the defrosting operation mode of the outdoor heat exchange unit or the oil recovery operation mode of the compressor.
The method according to claim 3,
The refrigerant bypass flow path,
And the first refrigerant circuit is activated and deactivated when the defrosting operation mode of the outdoor heat exchange unit or the oil recovery operation mode of the compressor is released.
The method according to claim 1,
Further comprising a use water circuit in which the use water is circulated,
The water circuit includes a water inlet temperature sensor disposed in the water circuit inflow passage and a water outlet temperature sensor disposed in the water circuit outlet flow passage,
The refrigerant bypass flow path,
And a heat pump type hot water supply device for determining whether to activate according to the water input temperature and the water output temperature of the water used by the water temperature sensor or the water temperature sensor.
The method according to claim 5,
The refrigerant bypass flow path,
And a heat pump type hot water supply device activated when at least one of the water input temperature sensor and the water output temperature sensor is equal to or less than a first predetermined use water temperature.
The method according to claim 5,
The refrigerant bypass flow path,
And a heat pump type hot water supply device which is deactivated when the water intake temperature sensor and the water outlet temperature sensor are higher than or equal to a second predetermined use water temperature.
The method according to claim 1,
An expansion valve for controlling expansion of the refrigerant is provided in the hydrokit heat transfer part inflow passage corresponding to the refrigerant bypass flow path and the hydrokit heat transfer part.
The expansion valve is a heat pump type hot water supply device is closed when the refrigerant bypass flow channel activation.

Images