JP2005274021A - Heat pump hot water supply heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the temperature rise of hot water to be heated by a heat pump unit by reducing the flow in the heat pump unit to reduce a load. <P>SOLUTION: When floor heating with floor heating panels 1, 2 and bathroom heating with a fan coil 22 are performed at the same time, heat valve 5, 6, 24 are opened by a control device S2 and a circulation pump 7 is operated for the flow of hot water in the sequence of an expansion tank 8, a circulation pump 7, a water flow path 9B of a first water-refrigerant heat exchanger 9, a flow control valve 21, the heat valves 5, 6, the floor heating panel 1, 2 and the expansion tank 8, and for the flow of hot water in the sequence of the expansion tank 8, the circulation pump 7, the water flow path 9B of the first water-refrigerant heat exchanger 9, the flow control valve 21, the heat valves 24, the fan coil 22 and the expansion tank 8. The control device S2 makes a mixture heat valve 25A open for the flow of part of circulating water flowing out of the expansion tank 8 via a flow path 25, not through the water flow path 9B of the first water-refrigerant heat exchanger 9, to the floor heating panels 1, 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a heat pump hot water heater / heater using a refrigerant such as HFC or CO ₂ . Specifically, a compressor, a parallel circuit of a first water refrigerant heat exchanger for heating and a second water refrigerant heat exchanger for hot water storage, each connected to a pressure reducing device, and an air heat exchanger are sequentially connected in an annular shape. 1st hot water circulation which circulates warm water by operation of the 1st circulation pump among the heat pump unit provided with the refrigerant circuit which is formed, an expansion tank, the 1st water refrigerant heat exchanger, a floor heating panel, and a bathroom heating device The present invention relates to a heat pump type hot water supply and heating device including a tank unit having a passage and a second hot water circulation path for circulating hot water by a second circulation pump between the second water refrigerant heat exchanger and the hot water storage tank.

  This type of conventional heat pump type hot water heater / heater stores hot water obtained by heat exchange in the heat pump unit in a hot water storage tank, stores the hot water in the hot water storage tank, and uses the hot water in this tank for hot water supply and baths. What performs warm water heating using the warm water for heating obtained by heat-exchange with is known. In this case, when the heating load is large, hot water with sufficient temperature cannot be obtained.

  In addition, a water supply water refrigerant heat exchanger for heating and a water refrigerant heat exchanger for heating are incorporated in series in the refrigerant circuit of the heat pump unit so that hot water for hot water supply and hot water for heating can be obtained. (For example, refer to Patent Document 1).

  However, with this system, hot water cannot be stored during hot water heating, so either hot water storage or hot water heating must be prioritized or performed alternately. There was a problem in terms.

  For this reason, the present applicant has proposed an easy-to-use heat pump type hot water heater / heater that can handle both hot water storage and hot water heating at the same time, or both cases (Patent Literature). 2).

And in this patent document 2, when carrying out floor heating and bathroom heating simultaneously, although the hot water heat-exchanged in the 1st water refrigerant | coolant heat exchanger is poured into the fan coil of a floor heating panel and a bathroom heating apparatus, Because the temperature is too high for warm water for the floor heating panel, open the thermal valve to the heat exchanged 80 ° C hot water and mix the medium temperature water from the expansion tank to control to 60-70 ° C. Yes. Further, in this case, when the temperature of the intermediate valve water is excessively mixed and the temperature is lowered, the opening / closing control of the thermal valve is performed based on the temperature detected by the thermistor so as to close the thermal valve.
JP 2002-257366 A Description and drawings attached to Japanese Patent Application No. 2003-5942

  However, according to the technique disclosed in Patent Literature 2, when the simultaneous operation of floor heating and bathroom heating is started from a state where the hot water temperature is normal temperature, the thermistor becomes a temperature (60 to 70 ° C.) required for floor heating. The thermal valve is still closed. Therefore, the flow rate of warm water flowing from the expansion tank to the heat pump unit is the total flow rate of the warm water circulation path for floor heating and the warm water circulation path for bathroom heating, and the flow rate is higher than that during the single operation of bathroom heating. For this reason, the heat pump unit requires a larger amount of heat. However, due to the characteristics of the heat pump unit, since the amount of heat cannot be increased rapidly, the warm water temperature rises worse, and as a result, the necessary hot water supply to bathroom heating that requires 80 ° C. hot water is delayed. There was a problem that the hot air was not blown out easily because the cold air prevention function worked in the bathroom heater.

  Further, according to the technology disclosed in Patent Document 2, when performing the opening / closing control of the thermal valve based on the temperature detected by the thermistor, for example, when the thermal valve is closed, all the flow rate flowing out of the expansion tank flows to the heat pump unit, When the thermal valve opens, a part of the flow rate flowing out of the expansion tank also flows to the thermal valve side without passing through the heat pump unit. For example, if the flow rate flowing out from the expansion tank is 3 liters / minute, it will flow 2 liters / minute to the heat pump unit and 1 liter / minute to the thermal valve operating valve side. For this reason, a load fluctuation occurs as the flow rate is changed in the heat pump unit. As a result, when the flow rate to the heat pump unit is changed from 3 liters / minute to 2 liters / minute, the temperature of the hot water coming out of the water flow path of the first water refrigerant heat exchanger rises rapidly, and vice versa. The heat pump unit tries to keep a certain temperature against this change, so adjust the operation frequency of the compressor and the expansion valve for heating, but the operation is set suddenly with respect to the load change due to the characteristics of the heat pump unit. There is a problem that it is difficult to reach the target hot water temperature because it cannot be changed and followed.

  Furthermore, according to the technique disclosed in Patent Document 2, the circulation flow rate control of the warm water for heating is performed by the circulation pump and the flow rate adjustment valve. However, the circulation pump that can adjust the conveying capacity without the flow rate adjustment valve. When the circulation flow rate is controlled by a DC pump (for example, a DC pump), it is necessary to increase the output of the DC pump when the thermal valve is closed rather than when the thermal valve is open. Therefore, there is a problem that the flow rate required by the fan coil cannot be obtained. This is because the pressure loss of the hot water piping of the first water refrigerant heat exchanger in the heat pump unit is large, and a sufficient amount of hot water circulation cannot be obtained unless the capacity of the DC pump is increased to compensate for the loss. The power consumption of the DC pump will increase.

  Therefore, the present invention is to supply a part of the hot water flowing out from the expansion tank by the operation of the circulation pump to the floor heating panel without going through the first water refrigerant heat exchanger for heating during the simultaneous operation of the floor heating and the bathroom heating. Therefore, it is an object to solve the problems described above.

  Therefore, according to the first aspect of the present invention, a compressor, a parallel circuit of a first water refrigerant heat exchanger for heating and a second water refrigerant heat exchanger for hot water storage, each connected to a decompression device, and an air heat exchanger are sequentially provided. A heat pump unit having a refrigerant circuit connected in an annular shape, an expansion tank, a first water refrigerant heat exchanger, a floor heating panel, and a bathroom heating device are used to circulate hot water by operating a first circulation pump. In a heat pump hot water supply and heating device, comprising: a hot water circulation path and a tank unit having a second hot water circulation path for circulating hot water by a second circulation pump between the second water refrigerant heat exchanger and the hot water storage tank; During the simultaneous operation of floor heating and bathroom heating, a part of the hot water flowing out from the expansion tank by the operation of the first circulation pump is transferred to the floor heating panel via the on-off valve without passing through the first water refrigerant heat exchanger. Serving It is characterized by the fact that it is made to pay.

  In the second aspect of the invention, a compressor, a parallel circuit of a first water refrigerant heat exchanger for heating and a second water refrigerant heat exchanger for hot water storage, each connected to a pressure reducing device, and an air heat exchanger are sequentially annular The first hot water that circulates the hot water by the operation of the first circulation pump between the heat pump unit having a refrigerant circuit connected thereto, the expansion tank, the first water refrigerant heat exchanger, the floor heating panel, and the bathroom heating device. In the heat pump hot water supply and heating device, comprising: a circulation path and a tank unit having a second hot water circulation path for circulating hot water between the second water refrigerant heat exchanger and the hot water storage tank by a second circulation pump. A flow path for supplying a part of the hot water flowing out from the first circulation pump to the floor heating panel without passing through the first water refrigerant heat exchanger by the operation of the one circulation pump; Open valve and floor During simultaneous operation of heating and bathroom heating, hot water is circulated through the first hot water circulation path by the operation of the first circulation pump, and a part of the hot water flowing out from the first circulation pump is operated by the operation of the first circulation pump. And a control device that controls to open the on-off valve so as to supply the floor heating panel without passing through the first water refrigerant heat exchanger.

  According to the present invention, in the case of simultaneous operation of floor heating and bathroom heating, the on / off valve is controlled to open, so that part of the circulating water flowing out of the expansion tank is part of the water flow path of the first water refrigerant heat exchanger The flow to the floor heating panel via the flow path without passing through, and therefore the flow rate flowing to the heat pump unit is reduced, the load is reduced, and the rise of the hot water temperature heated by the heat pump unit is improved.

  Further, in the case of the simultaneous operation, the on-off valve remains open, so that the load fluctuation due to the flow rate change is small, and the temperature of the hot water heated by the heat pump unit is easily stabilized.

  Furthermore, in the case of the simultaneous operation, since the on-off valve remains open, the circulating water flows to the floor heating panel via the on-off valve, and the first circulation pump is connected to the first water refrigerant heat exchanger. It becomes difficult to be affected by the pressure loss of the hot water piping, and it is not necessary to increase the conveying capacity of the first circulation pump, and the power consumption by the first circulation pump can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a system diagram showing an overall system of a heat pump hot water supply / room heating system. In FIG. 1, A is a heat pump unit, B is a tank unit, C1 is a first hot water circulation path for hot water heating, C2 is a second hot water circulation path for hot water storage, and R is a refrigerant circuit built in the heat pump unit A. is there. In the refrigerant circuit R, a refrigerant such as HFC or CO ₂ can be used, but CO ₂ is used in the present embodiment.

  1 and 2 are floor heating panels provided in the first hot water circulation path C1, and 3 and 4 are floor heating remote controllers provided corresponding to the floor heating panels 1 and 2 (hereinafter referred to as "floor heating remote controller"). In the first hot water circulation path C1, the water flow of the thermal valves 5 and 6, the circulation pump 7 such as a DC pump capable of adjusting the conveying capacity, the expansion tank 8, and the first water refrigerant heat exchanger 9 for heating. A path 9B, a bypass pipe 10 serving as a bypass path, and the like are provided.

The refrigerant circuit R includes a two-stage compression compressor 11 capable of capacity adjustment using CO ₂ refrigerant, a refrigerant flow path 9A of the first water refrigerant heat exchanger 9, and a primary flow path of the internal heat exchanger 12. 12A, a first branch P1 composed of a first opening / closing valve 13 for heating and a first expansion valve (decompression device) 14, a refrigerant flow path 15A of a second water refrigerant heat exchanger 15 for hot water storage, a second for hot water storage. A parallel circuit with the second branch P2 composed of the on-off valve 16 and the second expansion valve (pressure reducing device) 17, the air heat exchanger 18, the secondary flow path 12B of the internal heat exchanger 12, the accumulator 19, Are sequentially connected in a circular pipe.

  The first hot water circuit C1 is provided with a thermistor 20 for detecting the temperature of the hot water flowing out from the water passage 9B of the first water refrigerant heat exchanger 9, a flow rate adjusting valve 21, and a fan coil 22 of the bathroom heating device. It has been. Reference numeral 23 is a bathroom heating remote controller (hereinafter referred to as “bathroom heating remote controller”), 24 is a thermal valve provided at the inlet of the fan coil 22, and 25 is a part of hot water flowing out from the expansion tank 8 by the circulation pump 7. , 25A is a mixed heat operated valve as an on-off valve provided in the flow path 25. The flow path 25A is supplied to the floor heating panels 1 and 2 without passing through the water flow path 9B of the first water refrigerant heat exchanger 9. is there.

  In the second hot water circulation path C <b> 2, the water flow path 15 </ b> B of the second hot water refrigerant heat exchanger 15 for hot water storage and the hot water storage tank 27 are annularly connected via a circulation pump 28 and a flow rate adjustment valve 29. Reference numeral 30 denotes a thermistor that detects the temperature of hot water flowing out from the water flow path 15B of the second water refrigerant heat exchanger 15.

  A primary flow path 31 </ b> A of the water heat exchanger 31 is connected to the hot water storage tank 27 via a circulation pump 32. A bathtub 34 is connected to the secondary flow path 31 </ b> B of the water heat exchanger 31 via a circulation pump 33. A hot water supply pipe 35 is connected to the upper portion of the hot water storage tank 27, and a mixing valve 36 is provided in the hot water supply pipe 35. A water supply pipe 38 is branched and connected to the lower part of the hot water storage tank 27 and the mixing valve 36, and is further connected to the expansion tank 8 via an on-off valve 39.

  Reference numeral 40 denotes a kitchen remote controller (hereinafter referred to as “kitchen remote control”), and 41 denotes a bath remote controller (hereinafter referred to as “bath remote control”).

Further, the heat pump unit A and the tank unit B are provided with control devices S1 and S2 each composed of a microcomputer or the like. The control devices S1 and S2 control the operation and frequency of the compressor 11 and the circulation pumps 7 and 28 according to the operation signals from the floor heating remote controllers 3 and 4 and the bathroom heating remote controller 23 and the temperature signals of the thermistors 20 and 30, respectively. Operation control, opening / closing control of the thermal valves 5, 6, 25A, opening / closing control of the opening / closing valves 13, 16, opening control of the expansion valves 14, 17 and opening control of the flow rate adjusting valves 21, 29 are performed. The operation will be described below.

<Floor heating independent operation>
When performing floor heating by the floor heating panel 1, the operation switch of the floor heating remote controller 3 attached to the wall surface of the room is turned on. Then, the control device S2 that has received the operation signal opens the corresponding thermal valve 5 to operate the circulation pump 7, and in the first hot water circulation path C1, the expansion tank 8 → the circulation pump 7 → the first water. Hot water flows in the order of the water flow path 9 </ b> B of the refrigerant heat exchanger 9 → the flow rate adjustment valve 21 → the thermal valve 5 → the floor heating panel 1 → the expansion tank 8. In the case of this floor heating single operation, as shown in FIG. 2, the mixed heat valve 25A is closed by the control device S2, and the bypass pipe 10 is opened because it takes time for the heat valve 5 to open. Until then, a part of the warm water is bypassed, and a small amount of warm water flows.

  When the operation switch of the floor heating remote controller 3 is turned on, the compressor 11 of the heat pump unit A is operated by the control device S1 to which the operation signal is transmitted from the control device S2, and the first on-off valve 13 is opened. In the refrigerant circuit R, the compressor 11 → the refrigerant flow path 9A of the first water refrigerant heat exchanger 9 → the primary flow path 12A of the internal heat exchanger 12 → the first on-off valve 13 → the first expansion valve 14 → the air heat exchanger. The refrigerant flows in the order of 18 → secondary flow path 12B of the internal heat exchanger 12 → accumulator 19 → compressor 11. At this time, since hot water storage is not performed, the second open / close valve 16 and the second expansion valve 17 for hot water storage are closed, and the refrigerant flows into the primary flow path 15A of the first water refrigerant heat exchanger 15 for hot water storage. Absent.

  The temperature of the hot water supplied to the floor heating panel 1 is 60 to 70 ° C. The frequency control of the compressor 11 and the opening of the first expansion valve 14 are performed so that the hot water temperature detected by the thermistor 20 becomes this temperature. The degree control and the valve opening degree control of the flow rate adjusting valve 21 are performed by the control device S1.

  Further, in the floor heating control, a room temperature thermistor (not shown) mounted on the floor heating remote controller 3 detects the room temperature, and controls the opening and closing of the thermal valve 5 based on the deviation between the set temperature and the room temperature. This is done by controlling the amount of hot water to the control device S2.

  In addition, when floor heating is simultaneously performed by the floor heating panels 1 and 2, the operation valves of the floor heating remote controllers 3 and 4 are turned on to similarly control the opening and closing of the thermal valves 5 and 6, and the floor heating panel 1 and The warm water is supplied to 2 at the same time, and the amount of warm water to the floor heating panels 1 and 2 is individually controlled, so that the floor heating can be individually controlled.

  When such a floor heating operation is performed, when the floor heating room is warmed, the amount of heat released from the floor heating panels 1 and 2 is reduced, and the expansion tank 8 to the water flow path 9B of the water refrigerant heat exchanger 9 50-60 degreeC warm water will be supplied. For this reason, the water / refrigerant heat exchanger 9 does not exchange much heat, the refrigerant temperature becomes high, and the compressor 11 is loaded. The internal heat exchanger 12 is provided as a cooling mechanism for the refrigerant in such a case, and the heat radiation in the primary flow path 12A of the internal heat exchanger 12 is two of the internal heat exchanger 12 in the same refrigerant circuit R. Since it is absorbed again by the next flow path 12B, the refrigerant circuit R can be configured without waste and without reducing the efficiency.

<Bathroom heating only operation>
When bathroom heating is performed by the fan coil 22 of the bathroom heating device, the operation switch of the bathroom heating remote controller 23 is turned on. Then, the control device S2 that has received the operation signal opens the thermal valve 24 at the inlet of the fan coil 22, and the circulation pump 7 is operated. In the first hot water circulation path C1, the hot water flows in the order of the expansion tank 8 → circulation pump 7 → water flow path 9B of the first water refrigerant heat exchanger 9 → flow rate adjusting valve 21 → thermal valve 24 → fan coil 22 → expansion tank 8. Flowing. In the case of this bathroom heating single operation, as shown in FIG. 2, the mixing thermal valve 25A is closed by the control device S2, and the bypass pipe 10 is opened because it takes time for the thermal valve 24 to open. Until then, a part of the warm water is bypassed, and a small amount of warm water flows.

  The operation of the heat pump unit A and the refrigerant circulation are the same as in the floor heating operation, and no hot water is stored. Therefore, the second on-off valve 16 and the second expansion valve 17 are closed, and the primary of the second water refrigerant heat exchanger 15 The refrigerant does not flow through the flow path 15A.

  The temperature of the hot water supplied to the fan coil 22 is 80 ° C., and the hot water control for that is the same as in the floor heating operation. Further, the bathroom heating control by the control device S2 is performed by detecting the room temperature by a room temperature thermistor (not shown) mounted on the fan coil 22, controlling the fan rotation speed, and opening / closing the thermal valve 24.

<Simultaneous operation of floor heating and bathroom heating>
When floor heating by the floor heating panels 1 and 2 and bathroom heating by the fan coil 22 are performed simultaneously, the operation switches of the respective remote controllers 3, 4 and 23 are turned on. Then, the thermal valves 5, 6, 24 are opened by the control device S2, the circulation pump 7 is operated, and the water flow in the expansion tank 8 → the circulation pump 7 → the first water refrigerant heat exchanger 9 in the first hot water circulation path C1. Warm water flows in the order of path 9B → flow rate adjusting valve 21 → thermal valves 5 and 6 → floor heating panels 1 and 2 → expansion tank 8 and the expansion tank 8 → circulation pump 7 → first water refrigerant heat exchanger 9 water flow. Hot water flows in the order of the path 9B → the flow rate adjusting valve 21 → the thermal valve 24 → the fan coil 22 → the expansion tank 8.

  At this time, as shown in FIG. 2, in the case of the simultaneous operation of the floor heating and the bathroom heating, the control device S2 controls to open the mixed heat valve 25A, so that the circulating water flowing out from the expansion tank 8 is controlled. Since a part flows to the floor heating panels 1 and 2 via the flow path 25 without passing through the water flow path 9B of the first water refrigerant heat exchanger 9, the flow rate flowing to the heat pump unit A decreases. Accordingly, the load is reduced and the rise of the temperature of the hot water heated by the heat pump unit A is improved.

  In the case of the simultaneous operation, the mixed heat valve 25A remains open, so that the load fluctuation due to the flow rate change is small, and the temperature of the hot water heated by the heat pump unit A is easily stabilized.

  Furthermore, in the case of the simultaneous operation, since the mixed heat valve 25A remains open, the circulating water flows to the floor heating panels 1 and 2 through the mixed heat valve 25A. Is less susceptible to the pressure loss of the hot water piping of the first water refrigerant heat exchanger 9. As a result, it is not necessary to increase the conveying capacity of the circulation pump 7, and the power consumption by the circulation pump 7 can be reduced.

  Since the bypass pipe 10 takes time to open the thermal valves 5, 6, 24, a part of the hot water is bypassed until it is opened, and a very small amount of hot water flows.

  The operation of the heat pump unit A and the refrigerant circulation are the same as in the floor heating operation or the bathroom heating operation, and hot water is not stored. Therefore, the second open / close valve 16 and the second expansion valve 17 for hot water storage are closed.

<Hot water storage operation>
The operation switches of the kitchen remote controller 40 and the bath remote controller 41 are turned on. Then, the operation signal is transmitted from the control device S2 to the control device S1, and hot water is stored in the hot water storage tank 27. That is, the circulation pump 28 is operated by the control device S1, and in the second hot water circulation path C2, the hot water storage tank 27 → the circulation pump 28 → the water flow path 15B of the second water refrigerant heat exchanger 15 → the flow rate adjusting valve 29 → the hot water storage tank 27. In this order, hot water for hot water supply flows and is stored in the hot water storage tank 27.

  In the heat pump unit A, the control device S1 operates the compressor 11 to open the second on-off valve 16 and the second expansion valve 17 for hot water storage. In the refrigerant circuit R, the compressor 11 → second water refrigerant heat exchanger 15 The refrigerant flows in the order of the refrigerant flow path 15A → second on-off valve 16 → second expansion valve 17 → air heat exchanger 18 → secondary flow path 12B of the internal heat exchanger 12 → accumulator 19 → compressor 11. At this time, since heating is not performed, the first on-off valve 13 and the first expansion valve 14 are closed. Further, the refrigerant simply passes through the secondary flow path 12B of the internal heat exchanger 12, and the other is not affected.

  The temperature of the hot water supplied to the hot water storage tank 27 is 65 ° C. to 85 ° C., but the frequency control of the compressor 11 and the valve opening degree control of the second expansion valve 17 are performed so that the temperature detected by the thermistor 30 becomes this temperature. The valve opening control of the flow rate adjusting valve 29 is performed by the control device S1.

  The hot water stored in the hot water storage tank 27 is adjusted to an appropriate temperature by the mixing valve 36 and used for hot water supply from the hot water supply pipe 35 to the kitchen or shower, hot water filling to the bathtub 34, and the like. When hot water is supplied, water is supplied from the water supply pipe 38 to the hot water storage tank 27. In addition, by operating the circulation pumps 32 and 33, the hot water in the hot water storage tank 27 and the hot water in the bathtub 34 can be exchanged with the water heat exchanger 31, and the hot water in the bathtub 34 can be replenished.

<Simultaneous operation of heating and hot water storage>
The circulation path of hot water for heating and the circulation path of hot water for hot water storage in the case of simultaneous operation of heating and hot water storage are as described above. In the refrigerant circuit R, the first and second on-off valves 13 and 16 are both opened by the control device S1, and the compressor 11 → the refrigerant flow path 9A of the first water refrigerant heat exchanger 9 → the primary flow path of the internal heat exchanger 12. The refrigerant flows in the order of 12A → first on-off valve 13 → first expansion valve 14 → air heat exchanger 18 → secondary flow path 12B of the internal heat exchanger 12 → accumulator 19 → compressor 11 and the compressor 11 → Refrigerant flow path 15A of second water refrigerant heat exchanger 15 → second on-off valve 16 → second expansion valve 17 → air heat exchanger 18 → secondary flow path 12B of internal heat exchanger 12 → accumulator 19 → compressor The refrigerant flows in the order of 11.

  Further, the frequency control of the compressor 11, the valve opening control of the first expansion valve 14 and the second expansion valve 17, and the flow rate adjustment valves 21 and 29 are opened so that the thermistors 20 and 30 have the above-described target temperatures. The degree control is performed by the control device S1. Basically, the refrigerant is distributed at a ratio of 1: 1 between the first branch path (heating side) P1 and the second branch path P2 (hot water storage side) under the control of the expansion valves 14 and 17, and the simultaneous operation is performed. Even if it is broken, sufficient capacity can be obtained on the heating side and the hot water storage side.

  Although the embodiments of the present invention have been described above, various alternatives, modifications, and variations can be made by those skilled in the art based on the above description, and the various alternatives and modifications described above are within the scope of the present invention. Or a modification is included.

It is a whole system diagram of a heat pump type hot water supply and heating device. It is a flowchart figure which concerns on control of a mixing heat valve. It is a control block diagram.

Explanation of symbols

7 Circulation Pump 9 First Water Refrigerant Heat Exchanger 11 Compressor 14 Expansion Valve for Heating 15 Second Water Refrigerant Heat Exchanger 17 Expansion Valve for Hot Water Storage 25 Channel 25A Mixed Heating Valve 27 Hot Water Storage Tank 28 Circulation Pump A Heat Pump Unit B Tank unit C1 First hot water circuit for hot water heating C2 Second hot water circuit for hot water storage R Refrigerant circuit

Claims (2)

  A compressor, a parallel circuit of a first water refrigerant heat exchanger for heating and a second water refrigerant heat exchanger for hot water storage, each connected to a decompressor, and a refrigerant circuit formed by sequentially connecting an air heat exchanger in an annular shape A heat pump unit comprising: an expansion tank; a first hot water circulation path for circulating hot water between the first water refrigerant heat exchanger, a floor heating panel and a bathroom heating device by operating a first circulation pump; and the second Simultaneous operation of floor heating and bathroom heating in a heat pump type hot water supply and heating device including a tank unit having a second hot water circulation path for circulating hot water between a water refrigerant heat exchanger and a hot water storage tank by a second circulation pump Sometimes, a part of the hot water flowing out of the expansion tank due to the operation of the first circulation pump is supplied to the floor heating panel via the on-off valve without passing through the first water refrigerant heat exchanger. A heat pump type hot water supply and heating device.   A compressor, a parallel circuit of a first water refrigerant heat exchanger for heating and a second water refrigerant heat exchanger for hot water storage, each connected to a decompressor, and a refrigerant circuit formed by sequentially connecting an air heat exchanger in an annular shape A heat pump unit comprising: an expansion tank; a first hot water circulation path for circulating hot water between the first water refrigerant heat exchanger, a floor heating panel and a bathroom heating device by operating a first circulation pump; and the second In a heat pump hot water supply and heating device comprising a tank unit having a second hot water circulation path for circulating hot water between a water refrigerant heat exchanger and a hot water storage tank by a second circulation pump, the operation of the first circulation pump A flow path for supplying a part of the hot water flowing out from the first circulation pump to the floor heating panel without passing through the first water refrigerant heat exchanger, an on-off valve provided in the flow path, a floor Heating and bathroom warming At the time of simultaneous operation of the tuft, hot water is circulated through the first hot water circulation path by the operation of the first circulation pump, and a part of the hot water flowing out from the first circulation pump is operated by the operation of the first circulation pump. A heat pump type hot water supply and heating device, comprising: a control device that controls to open the on-off valve so as to be supplied to the floor heating panel without passing through a refrigerant heat exchanger.

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