JP2006003078A - Hot water supply apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple-structured and low-cost multifunctional hot water supply apparatus capable of coping with different heating temperatures according to various uses of a user. <P>SOLUTION: This hot water supply apparatus has: a hot water storage tank 17 storing hot water heated by a heating means 10; a hot water circuit 24 including a supply pipe stage 20 for taking out the hot water from the hot water storage tank 17, a hot water pump 25, intermediate heat exchangers 22, 23, and a return pipe stage 21 for returning the hot water to the hot water storage tank 17; and heating medium circuits 26, 27 circulating a heating medium absorbing heat from the hot water in the intermediate heat exchangers 22, 23 and radiating the heat in heat radiation terminals 29, 31. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hot water supply apparatus having a heat radiating terminal using hot water in a hot water storage tank as a heat source.

  As a conventional hot water supply apparatus of this type, for example, one described in Patent Document 1 has been common. In this hot water supply apparatus, as shown in FIG. 6, 1 is a hot water storage tank for storing hot water heated by a heating means (not shown), 2 is a hot water path for extracting hot water from the hot water storage tank 1, and 3 is in communication with the hot water path 2. The warm water return path 4 for returning the warm water to the hot water storage tank 1 is a circulation pump that is located between the warm water path 2 and the warm water return path 3 and drives the warm water. 5 is a heating medium circuit including the floor heating 6, 7 is a heating pump for driving the heating medium in the heating medium circuit, and 8 is heat for exchanging heat between the hot water from the hot water path 2 and the heating medium of the heating medium circuit. It is an exchanger. Further, the heat exchanger 8 is configured such that the heat medium of the heat medium circuit can also be heated by a heating means (not shown).

As described above, the hot water in the hot water storage tank 1 flows from the hot water passage 2 by the circulation pump 4, exchanges heat with the heat medium in the heat exchanger 8, decreases in temperature, and returns to the hot water storage tank 1 from the hot water return passage 3. On the other hand, the heat medium that has received heat from the hot water in the hot water storage tank 1 by the heat exchanger 8 has a predetermined heating temperature, is supplied to the floor heating 6 through the heat medium circuit 5, and dissipates heat, thereby providing the user with a floor heating function. It was like that. In addition, the heat medium that receives heat from the heating means (not shown) in the heat exchanger 8 has a predetermined heating temperature, is supplied to the floor heating 6 through the heat medium circuit 5 and dissipates heat, and has a floor heating function for the user. I was able to provide it.
JP 2002-89867 A

  However, in the above-described conventional hot water supply apparatus, heat exchange can be performed with respect to the heat medium circuit 5 rather than with hot water from the hot water storage tank 1, so that the configuration of the heat exchanger 8 becomes complicated. In the conventional hot water supply apparatus, the heating medium circuit heating by the heating means needs to be handled by a very complicated heat exchange configuration or a plurality of heating means. There was a problem of cost increase and device complexity.

  In order to solve the above-described problems, the present invention adjusts the flow rate of the hot water supply device that flows through the first heat exchange bypass line and the first heat exchange bypass line that communicates the inlet and the outlet of the first intermediate heat exchanger. A second heat exchanger bypass conduit that communicates the first heat exchanger bypass adjusting means, the inlet and outlet of the second intermediate heat exchanger, and a second heat that adjusts the flow rate through the second heat exchanger bypass conduit. And a bypass bypass adjusting means.

  According to the above invention, the hot water supply apparatus includes a plurality of intermediate heat exchangers, and the heat medium circuit corresponding to each of the intermediate heat exchangers exchanges heat with hot water from the hot water storage tank in the intermediate heat exchangers. Each heating medium circuit receives heat from the hot water from the hot water storage tank, reaches the specified heating temperature, and flows to the heat radiating terminal to dissipate heat. It is possible to provide a low-cost multifunctional hot water supply device with a simple configuration.

The hot water supply apparatus of the present invention includes a first heat exchange bypass pipe that communicates the inlet and outlet of the first intermediate heat exchanger, and a first heat exchange bypass that adjusts the flow rate flowing through the first heat exchange bypass pipe. Adjusting means;
A second heat exchanger bypass conduit that communicates the inlet and outlet of the second intermediate heat exchanger, and a second heat exchanger bypass adjuster that adjusts the flow rate through the second heat exchanger bypass conduit. In addition, it is possible to provide a low-cost multifunctional hot water supply device with a simple configuration that can cope with different heating temperatures according to various uses of the user.

  A hot water supply apparatus according to the present invention includes a hot water storage tank for storing hot water, a heating means for heating water supplied from the lower part of the hot water storage tank, a hot water storage pipe for returning the hot water heated by the heating means to the upper part of the hot water storage tank, A hot water circuit including a going pipe for taking out hot water from the upper part of the hot water tank, a first intermediate heat exchanger, a return pipe for returning the hot water to the lower part of the hot water tank, and a first intermediate heat exchanger connected in series with the first intermediate heat exchanger in the hot water circuit. Two intermediate heat exchangers, a first heat medium circuit including a first heat radiating terminal that circulates the heat medium to dissipate heat from the first intermediate heat exchanger, and a second intermediate heat exchanger that circulates the heat medium A second heat medium circuit having a second heat radiating terminal for radiating heat from the first heat exchange bypass line, a first heat exchange bypass line communicating with an inlet and an outlet of the first intermediate heat exchanger, and a first heat exchange bypass pipe A first heat exchange bypass adjusting means for adjusting a flow rate flowing through the passage, an inlet portion of the second intermediate heat exchanger, A second heat exchange bypass line that communicates the mouth, in which and a second heat exchange bypass regulating means for regulating the flow rate through the second heat exchange bypass pipe.

  Therefore, the heat medium circuit corresponding to each intermediate heat exchanger exchanges heat with the hot water from the hot water storage tank in the intermediate heat exchanger, and the heat medium of each heat medium circuit exchanges the hot water from the hot water storage tank. To provide a low-cost hot water supply device with a simple configuration that can respond to different heating temperatures according to various uses of users, because it receives heat from each of them, reaches each desired heating temperature, flows to the heat dissipation terminal and dissipates heat it can.

  In addition, when a second intermediate heat exchanger is provided downstream of the first intermediate heat exchanger with respect to the hot water flow flowing through the hot water circuit, and heat is simultaneously released from the first heat radiating terminal and the second heat radiating terminal, The temperature or flow rate of the hot water flowing to the second intermediate heat exchanger is adjusted by adjusting the flow rate flowing through the first heat exchange bypass conduit by the first heat exchange bypass adjusting means.

  Therefore, the heat medium of the heat medium circuit receives heat from the hot water from the hot water storage tank, reaches a predetermined heating temperature, and can flow to the heat radiating terminal to dissipate heat. On the other hand, the hot water whose temperature has decreased after the heat exchange in the upstream intermediate heat exchanger flows into the downstream intermediate heat exchanger, and the temperature of the heating medium in the heat medium circuit corresponding to the downstream intermediate heat exchanger has decreased. It exchanges heat with hot water, reaches a predetermined heating temperature, flows to the heat radiating terminal, and can dissipate heat. Therefore, it is possible to effectively use the hot water after the upstream heat exchange, and provide a heat medium circuit heating source with different temperature levels in one hot water circuit, so that it can respond to different heating temperatures according to various uses of users. Therefore, it is possible to provide a hot water supply apparatus that can perform finer load adjustment. Further, when the load of the heat radiating terminal of the heat medium circuit corresponding to the intermediate heat exchanger is changed, it is possible to cope with this load fluctuation by changing the hot water flow rate.

  In addition, since the flow rate of hot water flowing through each intermediate heat exchanger can be controlled independently, it is possible to cope with load fluctuations at each heat radiating terminal, and hot water flowing from the heat exchange bypass line of the upstream intermediate heat exchanger Since the temperature level and flow rate of the warm water flowing into the intermediate heat exchanger can be adjusted by mixing with the relatively cool warm water at the inlet of the heat exchanger, it is possible to meet more diverse heating needs.

  In addition, the hot water supply apparatus according to the present invention is provided with temperature control means for adjusting the flow rate or temperature of hot water passing through the intermediate heat exchanger, thereby maintaining the temperature of the heat medium supplied to the heat radiating terminal at a predetermined temperature. And a stable heating load can be provided.

Moreover, the hot water supply apparatus according to the present invention has a configuration in which the heating means is a heat pump cycle including a compressor, a radiator, a decompression means, and a heat absorber. And by making a heating means into a heat pump, high-performance energy saving can be achieved.

  In the hot water supply apparatus according to the present invention, the refrigerant sealed in the heat pump cycle is carbon dioxide.

  By using carbon dioxide as the refrigerant sealed in the heat pump cycle, the global environment is conserved, and the hot water stored in the hot water storage tank is boiled to a high temperature. Therefore, hot water from the hot water storage tank is transferred to the intermediate heat exchanger. High temperature heating that can be supplied and has a high heat medium temperature can be provided.

  Embodiments of the present invention will be described below with reference to the drawings.

Example 1
FIG. 1 is a configuration diagram showing a multifunction hot water supply apparatus according to Embodiment 1 of the present invention. In FIG. 1, reference numeral 10 denotes a heating means, which is a heat pump heat source constituting a heat pump cycle including a compressor 11, a radiator 12, a decompression means 13, and a heat absorber 14. And in this heat pump cycle, the refrigerant | coolant which the refrigerant | coolant pressure of a high voltage | pressure side becomes more than a critical pressure, for example, carbon dioxide, is enclosed. 15 is a circulation pump, 16 is a hot water storage pipe that transports hot water that has been exchanged with the refrigerant flowing through the radiator 12, and 17 is a hot water storage tank that communicates with the hot water storage pipe 16, from the bottom through the water supply pipe 17a. Then, the hot water is discharged from the upper discharge pipe 17b. Then, water is sent from the lower part of the hot water storage tank 16 by the circulation pump 15, exchanges heat with the refrigerant in the radiator 12, reaches a predetermined high temperature, and is transported to the hot water storage tank 17 through the hot water storage pipe 16. Reference numeral 18 denotes a mixing valve that mixes hot water from the hot water supply pipe 17 b and water supply from the water supply pipe 17 a, and hot water having a predetermined flow rate and temperature is sent to the hot water supply terminal 19 through the mixing valve 18.

  Reference numeral 20 denotes a going pipe stage that communicates with the inside of the hot water storage tank 17 provided at the upper part of the hot water storage tank 17, and 21 denotes a return pipe stage that returns to the hot water storage tank 17 after the temperature of the hot water drops. Is an intermediate heat exchanger provided between the outgoing pipe stage 20 and the return pipe stage 21. The hot water storage tank 17, the outgoing pipe stage 20, the intermediate heat exchangers 22 and 23, and the return pipe stage 21 constitute a hot water circuit 24. The intermediate heat exchangers 22 and 23 are juxtaposed in the hot water circuit 24, and 22a 23a is an electromagnetic valve which is a flow rate adjusting means corresponding to the intermediate heat exchangers 22 and 23, respectively. Reference numeral 25 denotes a hot water pump provided in the hot water circuit 24. After the hot water is taken out from the hot water storage tank 17 through the pipe stage 20, it is sent to the intermediate heat exchangers 22 and 23, and the heat exchange is performed in the intermediate heat exchangers 22 and 23. The hot water whose temperature has decreased is returned from the return pipe stage 21 to the hot water storage tank 17.

  26 is a heat medium circuit corresponding to the intermediate heat exchanger 22, and 27 is a heat medium circuit corresponding to the intermediate heat exchanger 23. The heat medium circuit 26 includes a heating pump 28 that drives and circulates a heat medium such as water, and a hot air fan 29 that is a heat radiating terminal. The heat medium circuit 27 includes a heating pump 30 that circulates the heat medium and a floor heating panel 31 that is a heat radiating terminal. That is, the present invention is a multifunction hot water supply device having a floor heating function in addition to a hot water supply function.

  Next, the operation and action will be described. When the hot air fan 29 is operated alone, the electromagnetic valve 22a as the flow rate adjusting means opens at a predetermined opening degree in the hot water circuit 24, and the electromagnetic valve 23a is fully closed, so that the hot water pump 25 sends high temperature hot water only to the intermediate heat exchanger 22. Then, the heating pump 28 is activated, and the heat medium in the heat medium circuit 26 absorbs heat from the hot water sent from the hot water pump 25 by the intermediate heat exchanger 22 to reach a predetermined hot air heater heating temperature and flows to the hot air fan 29. This heat medium reduces the temperature by exchanging heat with the warm air machine 29 and flows into the intermediate heat exchanger 22 again. On the other hand, the warm air is received from the heat medium by the warm air machine 29 to become warm air, which is sent to a predetermined place to realize warm air heating.

  When the floor heating panel 31 operates alone, in the hot water circuit 24, the electromagnetic valve 23a that is a flow rate adjusting means opens at a predetermined opening, the electromagnetic valve 22a is fully closed, and the hot water pump 25 is only in the intermediate heat exchanger 23. High temperature hot water is to be sent to. Then, the heating pump 30 is activated, and the heat medium in the heat medium circuit 27 absorbs heat from the hot water sent from the hot water pump 25 by the intermediate heat exchanger 23 to reach a predetermined floor heating temperature and flows to the floor heating panel 31. This heat medium dissipates heat in the floor heating panel 31 and decreases in temperature, and flows into the intermediate heat exchanger 23 again. On the other hand, the floor heating panel 31 is heated by the heat radiation of the heat medium, reaches a predetermined temperature, and realizes floor heating.

  When the hot air fan 29 and the floor heating panel 31 are operated simultaneously, in the hot water circuit 24, the electromagnetic valves 22a and 23a, which are flow rate adjusting means, are opened at predetermined openings, respectively, and the hot water pump 25 is respectively connected to the intermediate heat exchangers 22 and 23. Send hot water to. Then, in the intermediate heat exchanger 22, the heat medium circulating in the heat medium circuit 26 is heated to a predetermined warm air heating temperature and transported to the warm air machine 29. In the intermediate heat exchanger 23, the heat medium circulating in the heat medium circuit 27 is heated to a predetermined floor heating temperature and transported to the floor heating panel 31. The desired heating temperature differs depending on the application. For example, the above-described hot air heating temperature is preferably 80 ° C. and the floor heating temperature is preferably 60 ° C. or less. Therefore, the opening degree of the electromagnetic valves 22a and 23a is adjusted, and the intermediate heat exchanger 22 and The desired hot air heating temperature and floor heating temperature can be obtained by controlling and adjusting the flow rate of the hot water flowing through 23.

  In this way, by installing the intermediate heat exchangers 22 and 23 in parallel in the hot water circuit 24, the heat medium flowing through the heat medium circuits 26 and 27 flows from the hot water storage tank 17 in the intermediate heat exchangers 22 and 23, respectively. Heat exchange with each other, and the heat medium of each of the heat medium circuits 26 and 27 receives heat from the hot water from the hot water storage tank 17, reaches a desired heating temperature, flows to the heat radiating terminals 29 and 31, respectively, and dissipates heat. Therefore, it is possible to provide a low-cost multifunctional hot water supply apparatus with a simple configuration that can cope with different heating temperatures according to various uses of the user.

  Further, by setting the intermediate heat exchangers 22 and 23 in parallel, the amount of hot water or the temperature of the hot water flowing through the intermediate heat exchangers 22 and 23 can be adjusted individually, so that the heat medium circuits 26 and 27 are mutually connected. Hot air heating and floor heating can be provided without interference. In the heat dissipating terminal, even when one heating load fluctuates, the other heating operation is not affected.

  Further, by providing electromagnetic valves 22a and 23a, which are flow rate adjusting means for changing the flow rate of hot water flowing through the intermediate heat exchangers 22 and 23, respectively, the opening of the electromagnetic valves 22a and 23a can be used to determine the intermediate amount between them. Since the flow rate of warm water flowing through the heat exchangers 22 and 23 can be controlled, a desired heating temperature can be achieved by adjusting the flow rate of warm water. Further, when the load of the heat radiating terminal of the heat medium circuit 26 or 27 corresponding to the intermediate heat exchanger 22 or 23 changes, it is possible to cope with this load fluctuation by making the hot water flow rate variable.

  Moreover, high-performance energy saving can be achieved by using a heat pump cycle as the heating means.

  In addition, by using carbon dioxide as the refrigerant of the heat pump cycle, the global environment can be protected, and the hot water stored in the hot water storage tank 17 is boiled up to a high temperature, so that the hot water from the hot water storage tank 17 is transferred to the intermediate heat exchanger 22 or 23. Hot water can be supplied, and high-temperature heating with a high heat medium temperature can be provided.

(Example 2)
FIG. 2 is a block diagram showing a multi-function hot water supply apparatus according to Embodiment 2 of the present invention.

The second embodiment is different from the first embodiment in that the intermediate heat exchanger 2 in the hot water circuit 24 is different.
2 and 23 are installed in series, and a solenoid valve 32 of a flow rate adjusting means for controlling the flow rate of the hot water flowing through the hot water circuit 24 is newly installed. The electromagnetic valves 22a and 23a of the flow rate adjusting means used in the first embodiment are discarded in this embodiment. In addition, the thing of the same code | symbol as Example 1 has the same structure, and abbreviate | omits description.

  Next, the operation and action will be described. When the hot air blower 29 or the floor heating panel 31 is operated independently, the solenoid valve 32 opens the hot air blower mode opening or the floor heating mode opening, and the hot water pump 25 is driven to drive the hot water hot water. Circulates from the hot water storage tank 17 through the hot water circuit 24 in the order of the outgoing pipe stage 20, the electromagnetic valve 32, the intermediate heat exchanger 22, the intermediate heat exchanger 23, the return pipe stage 21, and the hot water storage tank 17. Then, the heat medium flowing through the operating heat medium circuit 26 or 27 exchanges heat with the high-temperature hot water from the hot water storage tank 17 in the intermediate heat exchanger 22 or 23 to become a predetermined hot air heating temperature or floor heating temperature. Then, heat is radiated by the hot air heater 29 or the floor heating panel 31 to realize hot air heating or floor heating.

  When the hot air fan 29 and the floor heating panel 31 are operated simultaneously, the solenoid valve 32 opens the simultaneous operation mode opening, and the hot water pump 25 drives the hot water from the hot water storage tank 17 to the pipe stage 20, the solenoid valve 32, and the intermediate heat. The hot water circuit 24 is circulated in the order of the exchanger 22, the intermediate heat exchanger 23, the return pipe stage 21, and the hot water storage tank 17. Then, the heat medium in the heat medium circuit 26 exchanges heat with the above-described high-temperature hot water flowing through the intermediate heat exchanger 22, reaches a predetermined hot air heating temperature, and flows to the hot air machine 29. Warm air heating is realized by the heat radiating of the heat medium by the hot air machine 29.

  On the other hand, the hot water flowing through the intermediate heat exchanger 22 decreases in temperature due to the heat radiation to the heat medium circuit 26 and flows into the intermediate heat exchanger 23. Then, the heat medium in the heat medium circuit 27 exchanges heat with the above-mentioned hot water whose temperature has decreased through the intermediate heat exchanger 23, reaches a predetermined floor heating temperature, and flows to the floor heating panel 31. Floor heating is realized by the heat radiation of the heat medium in the floor heating panel 31.

  In this way, by installing the intermediate heat exchangers 22 and 23 in series in the hot water circuit 24, the hot water after the upstream heat exchange is effectively used, and the heat medium circuits 26 and 27 having different temperature levels in one hot water circuit. Therefore, it is possible to provide a multifunctional hot water supply apparatus that can cope with different heating temperatures according to various uses of the user and can perform finer load adjustment.

Example 3
FIG. 3 is a block diagram showing a multifunction hot water supply apparatus according to Embodiment 3 of the present invention. The third embodiment is different from the second embodiment in that, in the hot water circuit 22, the heat exchange bypass conduit 33 that communicates the inlet and the outlet of the intermediate heat exchanger 22 and the heat exchanger bypass conduit 33 flow. The electromagnetic valve 33a, which is a heat exchange bypass conduit adjusting means for making the flow rate variable, flows through the heat exchanger bypass conduit 34 that communicates the inlet and outlet of the intermediate heat exchanger 23, and the heat exchanger bypass conduit 34. This is that a solenoid valve 34a, which is a heat exchange bypass conduit adjusting means for making the flow rate variable, is newly provided. In addition, the thing of the same code | symbol as Example 2 has the same structure, and abbreviate | omits description.

  Next, the operation and action will be described. When the warm air fan 29 is operated alone, the solenoid valve 32 opens at the warm air fan mode opening, the solenoid valve 34a bypassing the intermediate heat exchanger 23 is opened, and the hot water pump 25 is driven. Thus, the hot water circulates from the hot water storage tank 17 through the hot water circuit 24 in the order of the outgoing pipe stage 20, the electromagnetic valve 32, the intermediate heat exchanger 22, the heat exchange bypass line 34, the return pipe stage 21, and the hot water storage tank 17. Then, the heat medium flowing through the operating heat medium circuit 26 exchanges heat with the high temperature hot water from the hot water storage tank 17 in the intermediate heat exchanger 22, reaches a predetermined hot air heating temperature, and dissipates heat in the hot air fan 29. Realize hot air heating.

When the floor heating panel 31 is operated independently, the solenoid valve 33a bypassing the intermediate heat exchanger 22 is opened at the floor heating mode opening, the solenoid valve 32 and the solenoid valve 34a are closed, and the hot water pump 25 is driven to drive hot water. Circulates from the hot water storage tank 17 through the hot water circuit 24 in the order of the outgoing pipe stage 20, the heat exchange bypass line 33, the intermediate heat exchanger 23, the return pipe stage 21, and the hot water storage tank 17. Then, the heat medium flowing through the operating heat medium circuit 27 exchanges heat with the hot water from the hot water storage tank 17 in the intermediate heat exchanger 23, reaches a predetermined floor heating temperature, dissipates heat in the floor heating panel 31, Achieve floor heating.

  In this way, when the floor heating panel 31 is operating alone, the heat exchange bypass line 33 prevents the hot water from flowing through the intermediate heat exchanger 22 that is stopped, or when the hot air fan 29 is operating independently. The heat exchange bypass pipe 34 prevents hot water from flowing through the intermediate heat exchanger 23, thereby preventing wasteful heat loss and realizing a highly efficient heating operation.

  When the hot air fan 29 and the floor heating panel 31 are operated simultaneously, the temperature or flow rate of the hot water flowing through the downstream intermediate heat exchanger 23 is adjusted by adjusting the flow rate of the hot water flowing through the heat exchange bypass line 33. Therefore, the heating load fluctuation of the heat medium circuit 27 can be dealt with. As described above, it is possible to cope with fluctuations in the other heating load without affecting one heating operation, and it is possible to widen the width of the heating load and the heating temperature provided to the user.

  In the present embodiment, the case where the intermediate heat exchangers 22 and 23 are installed in series has been described. However, even when the intermediate heat exchangers 22 and 23 are installed in parallel, heat is applied to the intermediate heat exchangers 22 and 23, respectively. A similar effect can be obtained by providing an alternating bypass line.

Example 4
FIG. 4 is a block diagram showing a multifunction hot water supply apparatus according to Embodiment 4 of the present invention. The fourth embodiment is different from the second embodiment in that in the hot water circuit 22, a temperature control bypass pipe 35 that communicates with the outgoing pipe stage 20 and the return pipe stage 21 is newly provided. In addition, the thing of the same code | symbol as Example 2 has the same structure, and abbreviate | omits description.

  Next, the operation and action will be described. When the hot water circuit 24 is in operation, a part of the hot water that has radiated heat and decreased in temperature through the intermediate heat exchangers 22 and 23 passes through the temperature control bypass line 35 as necessary. It flows to the tube stage 20 and mixes with hot water from the hot water storage tank 17. And since the temperature of the hot water flowing to the intermediate heat exchangers 22 and 23 can be lowered to the desired low temperature level instead of the temperature of the hot water stored in the hot water storage tank 17, heating with a wider temperature level can be performed. Can be supplied.

  In the present embodiment, the case where the intermediate heat exchangers 22 and 23 are installed in series has been described. However, the same effect can be obtained when the intermediate heat exchangers 22 and 23 are installed in parallel.

(Example 5)
FIG. 5 is a partial configuration diagram showing a multi-function hot water supply apparatus according to Embodiment 5 of the present invention. The fifth embodiment is different from the first embodiment in that the temperature sensor 36 of the temperature detecting means for detecting the temperature of the heat medium flowing to the hot air fan 29 and the temperature detection for detecting the temperature of the heat medium flowing to the floor heating panel 31 are different. The temperature sensor 37 of the means and the temperature control means 38 for controlling the solenoid valves 22a and 23a are newly provided so that the temperature detected by the temperature sensor 36 or 37 becomes a desired hot air heating temperature or floor heating temperature. It is. In addition, the thing of the same code | symbol as Example 1 has the same structure, and abbreviate | omits description.

  Next, the operation and action will be described. The temperature sensor 36 or 37 detects the temperature of the heat medium flowing through the warm air fan 29 and the floor heating panel 31 and sends the detected temperature result to the temperature control means 38. The temperature control means 38 controls the opening degree of the electromagnetic valve 22a or 23a based on these detected temperature results so that these temperatures become the desired warm air heating temperature or floor heating temperature, and the intermediate heat The flow rate of hot water flowing through the exchanger 22 or 23 is adjusted.

  Thus, for example, even when the temperature of the hot water flowing from the hot water storage tank 17 is unstable, the temperature of the heat medium supplied to the hot air heater 29 or the floor heating terminal 31 is set to a desired hot air heating temperature or floor heating temperature. It is possible to maintain a stable heating load.

  In the present embodiment, the case where the intermediate heat exchangers 22 and 23 are installed in series has been described. However, the same effect can be obtained when the intermediate heat exchangers 22 and 23 are installed in parallel.

  In this embodiment, the opening degree of the electromagnetic valves 22a and 23a is controlled. However, the temperature control bypass adjusting means and the heat exchange bypass adjusting means disclosed in the embodiments 3 to 4 are controlled to perform intermediate heat exchange. Since the temperature of the hot water flowing to the vessels 22 and 23 can also be adjusted, a higher degree of freedom can be controlled.

  In each of the above embodiments, the heating means is a heat pump cycle, but other forms of heating means such as an electric heater or waste heat can be used.

  In addition, although the heat radiating terminal was a warm air fan and a floor heating panel in each said Example, it can also be set as the heat radiating terminal of another form according to a use. For example, a heat radiating terminal may be used for bathing. Even in this case, a multi-function hot water supply device having two functions of a hot water supply function and a bath reheating function is obtained. Three functions of a hot water supply function, a heating function, and a bath reheating function may be provided. In this case, there are a plurality of heat dissipating means.

  In each of the above embodiments, the flow rate adjusting means is a solenoid valve. However, the flow rate adjusting means may be changed by changing the number of rotations of the hot water pump.

  As described above, according to the present invention, it is possible to provide a low-cost hot water supply apparatus with a simple configuration that can cope with heating temperatures of different temperature levels according to various uses of users.

The block diagram of the multifunction hot-water supply apparatus in Example 1 of this invention The block diagram of the multifunction hot-water supply apparatus in Example 2 of the invention The block diagram of the multifunction hot-water supply apparatus in Example 3 of this invention The block diagram of the multifunction hot-water supply apparatus in Example 4 of this invention Partial block diagram of a multifunctional hot water supply apparatus in Embodiment 5 of the present invention Configuration diagram of conventional hot water supply equipment

Explanation of symbols

10 Heat pump cycle (heating means)
DESCRIPTION OF SYMBOLS 11 Compressor 12 Radiator 13 Pressure reducing means 14 Heat absorber 17 Hot water storage tank 20 Outgoing pipe stage 21 Return pipe stage 22, 23 Intermediate heat exchanger 24 Hot water circuit 25 Hot water pump 26, 27 Heating medium circuit 29 Hot air machine (heat radiating terminal)
31 Floor heating panel (heat dissipation terminal)
20 Outgoing pipe stage 21 Return pipe stage 22, 23 Intermediate heat exchanger 32 Solenoid valve 32 (flow rate adjusting means)
33, 34 Heat exchange bypass conduit 33a, 34a Solenoid valve 32 (heat exchange bypass adjusting means)
35 Temperature control bypass line 35a Solenoid valve (Temperature control bypass adjustment means)
36, 37 Temperature sensor (temperature detection means)
38 Temperature control means

Claims (4)

A hot water storage tank for storing hot water, heating means for heating water supplied from the lower part of the hot water storage tank, a hot water storage pipe for returning hot water heated by the heating means to the upper part of the hot water storage tank, and an upper part of the hot water storage tank A hot water circuit including a going pipe for taking out hot water from the first intermediate heat exchanger, and a return pipe for returning the hot water to the lower part of the hot water tank, and a second connected in series with the first intermediate heat exchanger in the hot water circuit. An intermediate heat exchanger; a first heat medium circuit including a first heat radiating terminal that circulates the heat medium to dissipate heat from the first intermediate heat exchanger; and the second intermediate heat exchange by circulating the heat medium. A second heat medium circuit having a second heat radiating terminal for radiating heat from the heat exchanger, a first heat exchange bypass line communicating the inlet and outlet of the first intermediate heat exchanger, and the first heat A first heat exchange bypass adjusting means for adjusting a flow rate flowing through the AC bypass conduit; Water heater comprising: a second heat exchange bypass pipe for communicating the inlet and outlet portions between heat exchanger and a second heat exchange bypass regulating means for regulating the flow rate through the second heat exchange bypass pipe. When a second intermediate heat exchanger is provided on the downstream side of the first intermediate heat exchanger with respect to the hot water flow flowing through the hot water circuit, and heat is radiated simultaneously from the first heat radiating terminal and the second heat radiating terminal, The hot water supply apparatus of Claim 1 which adjusts the flow volume which flows through the said 1st heat exchanger bypass line by a heat exchanger bypass adjustment means, and adjusts the temperature or flow volume of the hot water which flows into a said 2nd intermediate heat exchanger. The hot water supply apparatus according to claim 1 or 2, wherein the heating means is a heat pump cycle including a compressor, a radiator, a decompression means, and a heat absorber. The hot water supply apparatus according to claim 3, wherein the refrigerant sealed in the heat pump cycle is carbon dioxide.

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