JP4138712B2 - Hot water storage hot water system - Google Patents

Description

  The present invention relates to a hot water storage type hot water apparatus.

Conventionally, in this type, the heat pump heating means circulates and heats the water in the hot water storage tank at midnight to store the amount of hot water needed for hot water supply in the daytime. In some cases, the heated water is directly circulated through a heating heat exchanger in parallel with the hot water storage tank for heating (for example, Patent Document 1).
JP 2004-28414 A

  However, in this prior art, the hot water storage operation for storing hot water in the hot water storage tank and the heating operation are selected by the flow path switching means that enables one of the circulation circuits to circulate at the branch point of the heat pump circulation circuit and the heating circulation circuit. Therefore, it was impossible to respond to the case where there was a request for hot water storage and a request for heating at the same time.

Accordingly, in order to solve the above problems, the present invention provides a hot water storage tank for storing hot water, heating means for heating the hot water in the hot water storage tank, and the hot water tank flowing out from the hot water storage tank through a heating forward pipe. A heating circulation circuit that connects the hot water storage tank and the heating means so that the hot water can circulate so as to flow into the hot water storage tank via a heating return pipe, and a heating circulation pump that is provided in the heating circulation circuit and circulates the hot water. A heat exchanger for heating the hot water on the secondary side, and a heat exchanger that connects the heat exchanger and the heating means so that the hot water can circulate and bypass the hot water storage tank in the middle of the heating circulation circuit. A heating circuit comprising: a circulation circuit; and a heat exchange circulation pump provided in the heat exchange circuit to circulate hot water, and detecting a flow direction detecting means for detecting whether hot water is flowing into or out of the hot water storage tank. Than the heat exchange circulation circuit ring circuit is provided on the heating forward pipe of the hot water storage tank, when performing straight-warm operation and the hot water storage operation at the same time, it becomes the direction in which the output of the flow direction detecting means flowing out of the hot water storage tank Thus, the control means for controlling the capacity of the heating circulation pump or the heat exchange circulation pump is provided.

Further, according to claim 2, in the device according to claim 1, when the control means performs the direct warming operation and the warm storage operation at the same time, the output of the flow direction detection means flows in the hot water storage tank. Thus, the capacity of the heating circulation pump or the heat exchange circulation pump is controlled.

According to a third aspect of the present invention, there is provided a hot water storage tank for storing hot water, a heating means for heating the hot water in the hot water storage tank, and the hot water flowing out from the hot water storage tank through a heating forward pipe and into the hot water storage tank through a heating return pipe. A heating circulation circuit for connecting the hot water storage tank and the heating means so that the hot water can circulate so as to flow in; a heating circulation pump provided in the heating circulation circuit for circulating hot water; and for heating the hot water on the secondary side A heat exchanger, a heat exchange circuit that connects the heat exchanger and the heating means so that hot water can circulate, and bypasses the hot water storage tank in the middle of the heating circulation circuit; and the heat exchange circuit A heat exchange circulation pump provided to circulate hot water and water, and a flow direction detection means for detecting whether hot water is flowing into or out of the hot water storage tank is provided before the heat exchange circuit in the heating circuit. Provided in the heating return pipe of the hot water storage tank side, when performing straight-warm operation and the hot water storage operation at the same time, output the so that the direction of flowing heating circulation pump or the heat exchange circulation into the hot water storage tank in the flow direction detecting means Control means for controlling the capacity of the pump was provided.

Further, in claim 4 according to claim 3, when the control means performs the direct warming operation and the warm storage operation at the same time, the output of the flow direction detecting means flows out from the hot water storage tank. Thus, the capacity of the heating circulation pump or the heat exchange circulation pump is controlled.

Further, in claim 5, a hot water storage tank for storing hot water, a heating means for heating the hot water in the hot water storage tank, a heating circulation circuit for connecting the hot water storage tank and the heating means so that hot water can be circulated, and A heating circulation pump provided in the heating circulation circuit for circulating hot water, a heat exchanger for heating the hot water on the secondary side, and a heat exchange circulation for connecting the heat exchanger and the heating means so that the hot water can circulate. A heating circulation amount detecting means for detecting the circulation amount of the heating circulation circuit, and detecting the circulation amount of the heat exchange circulation circuit. When the direct heating operation and the hot water storage operation are performed simultaneously , the heating circulation pump is arranged so that the output of the heating circulation amount detection means is larger than the output of the heat exchange circulation amount detection means. Or the heat exchange Was that provided with control means for controlling the capacity of the ring pump.

Further, in claim 6, when the control means performs the direct warming operation and the heat storage operation simultaneously, the output of the heating circulation amount detection means is the output of the heat exchange circulation amount detection means. The capacity of the heating circulation pump or the heat exchange circulation pump was controlled to be smaller than the output.

Further, in claim 7, a hot water storage tank for storing hot water, a heating means for heating the hot water in the hot water storage tank, a heating circulation circuit for connecting the hot water storage tank and the heating means so that hot water can be circulated, and A heating circulation pump provided in the heating circulation circuit for circulating hot water, a heat exchanger for heating the hot water on the secondary side, and a heat exchange circulation for connecting the heat exchanger and the heating means so that the hot water can circulate. Circuit, a heat exchange circulation pump provided in the heat exchange circuit for circulating hot water, and a heating circulation amount detecting means for detecting a circulation amount of the heating circulation circuit, the capability of the heat exchange circulation pump and the heat The storage means for storing the relationship of the circulation amount of the AC circuit in advance is provided, and when the direct warming operation and the hot water storage operation are performed simultaneously, the circulation amount of the heat exchange circuit is less than the output of the heating circulation amount detection means. The storage means憶 to determine the ability of the heat exchange circulation pump is, was that provided with control means for controlling the capacity of the heat exchange circulation pump in this capacity.

Further, according to claim 8, in the invention according to claim 7, when the control unit performs the direct warming operation and the heat storage operation at the same time, the circulation amount of the heat exchange circuit is the output of the heating circulation amount detection unit. As described above, the ability of the heat exchanger pump stored in the storage means is obtained, and the ability of the heat exchanger pump is controlled by this ability.

Further, in claim 9, a hot water storage tank for storing hot water, a heating means for heating the hot water in the hot water storage tank, a heating circulation circuit for connecting the hot water storage tank and the heating means so that hot water can be circulated, and A heating circulation pump provided in the heating circulation circuit for circulating hot water, a heat exchanger for heating the hot water on the secondary side, and a heat exchange circulation for connecting the heat exchanger and the heating means so that the hot water can circulate. Circuit, a heat exchange circulation pump provided in the heat exchange circuit for circulating hot water, and a heating circulation amount detecting means for detecting a circulation amount of the heating circulation circuit, and simultaneous operation of direct heating operation and hot water storage operation. circulation capability and the heating circulation circuit of the heat exchange circulation pump when performing the relationship and co-operation of Chokudan operation and蓄暖operation between capacity and circulation amount of the heating circulation circuit of the heat exchange circulation pump in performing to stores in advance the relationship between the amount Comprising a storage unit, obtains the capability of the heat exchange circulation pump based a mode of co-operation between the output of the heating circulation amount detecting means in the storage contents of the storage means, controlling the capacity of the heat exchange circulation pump in this capacity It was assumed that a control means was provided.

According to the present invention, the heating circulation pump and the heat exchange circulation pump can be appropriately controlled in accordance with the operation state at that time, and the hot water storage operation can be simultaneously performed while performing the direct warming operation, so that the reliability of the operation is improved. A highly reliable hot water storage type hot water apparatus can be provided.

Furthermore, the heat circulation operation can be performed simultaneously with the direct circulation operation by appropriately controlling the heating circulation pump and the heat exchange circulation pump.

Next, a hot water storage type hot water supply and heating apparatus according to a first embodiment of the hot water storage type hot water apparatus of the present invention will be described.
As shown in FIG. 1, 1 is a hot water storage tank for storing hot water, 2 is a heat pump type heating means as a heating means for heating hot water in the hot water storage tank 1, and 3 is a heating forward connected to the lower part of the hot water storage tank 1. A heating circulation circuit comprising a pipe 4 and a heating return pipe 5 connected to the upper part of the hot water storage tank 1, 6 is a heating circulation pump provided in the heating circulation circuit 3 for circulating hot water in the hot water storage tank 1, and 7 is the hot water storage A water inlet pipe connected to the lower part of the tank 1 for supplying water to the hot water storage tank 1, and a hot water outlet pipe 8 connected to the upper part of the hot water storage tank 1 for discharging hot water stored therein.

  9 is a heat exchanger for heating hot water circulating to the heat radiating section (not shown) on the secondary side, and 10 is a heat exchange circulation for connecting the heat exchanger 9 and the heating means 2 so that hot water can circulate. A circuit 11 is a heat exchange circulation pump provided in the heat exchange circuit 10 for circulating hot water. The heat exchange circuit 10 is provided with a circulation switching means 12 that shares at least a part of the circuit with the heating circuit 3 and enables one of the circuits to circulate. In this embodiment, the heat exchange circuit 3 shares the forward pipe and the return pipe on the heating means 2 side of the heating circuit 3, and is more than the heat exchange circuit 3 of the heating circuit 3. The heating return pipe 5 on the hot water storage tank 1 side is provided with an opening / closing valve as the circulation switching means 12.

  Reference numeral 13 denotes a water supply pipe branched from the water inlet pipe 7, and 14 denotes a hot water supply mixing valve for mixing hot water from the hot water outlet pipe 8 and water supplied from the water supply pipe 13 to supply hot water having a set temperature.

  Reference numeral 15 denotes a flow direction detecting means for detecting whether hot water is flowing into or out of the hot water storage tank 1 and is provided in the heating forward pipe 4 on the hot water storage tank 1 side of the heat circulation circuit 10 of the heating circulation circuit 3. Is.

  Here, the heating means 2 includes a compressor 16, a refrigerant-water heat exchanger 17 as a condenser, an electronic expansion valve 18, and a forced air-cooled evaporator 19, and the heating means 2 includes a refrigerant as a refrigerant. Carbon dioxide is used to constitute a supercritical heat pump cycle.

  20 controls the drive of the hot water supply mixing valve 13 and also controls the components of the heat pump circuit and the drive of the heating circulation pump 6 to raise the desired amount of hot water flowing into the refrigerant-water heat exchanger 16. It is a control means for controlling the capacity of the heat exchange circulation pump 11 based on the flow direction detected by the flow direction detection means 15 and boiled up to a temperature. The control means is mainly composed of a pre-programmed microcomputer. Yes.

Here, a hot water storage operation for storing hot water heated by the heating means 2 in the hot water storage tank 1 will be described.
At the midnight time, the control means 20 starts the hot water storage operation so that it boils up to the predetermined time in the morning within the midnight time zone when the power unit price is low, and switches the circulation switching means 12 so that the heating circulation circuit 3 can circulate (this implementation). In the embodiment, the on-off valve is opened), and the heating circulation pump 6 and the heating means 2 are driven and started, and the hot water taken out from the lower part of the hot water storage tank 1 is heated up to the boiling temperature by the heating means 2 and the upper part of the hot water storage tank 1 Store hot water so that it is laminated. When the desired amount of heat is stored, the heating circulation pump 6 and the heating means 2 are stopped and the hot water storage operation is terminated. In this embodiment, hot water can be circulated in the heating circuit 3 by the circulation switching means 12 during the hot water storage operation, but the heat exchanger circuit 10 and the heat exchanger pump 11 are connected to the channel resistance in the heat exchanger circuit 10. It almost never circulates.

Next, a hot water supply operation when the user opens the hot water tap to supply hot water will be described.
When the hot water tap is opened, hot water is stored in the hot water storage tank 1 from the water inlet pipe 7 and hot water is discharged from the hot water outlet pipe 8 at the same time. Then, the hot water from the hot water discharge pipe 8 flows into the hot water supply mixing valve 14 and is mixed with the water supply from the water supply pipe 13 by the hot water supply mixing valve 14 controlled by the control means 20 and from the hot water tap at a desired hot water supply set temperature. Hot water is supplied.

Next, the heating operation will be described.
When the heating request is generated, the control means 20 starts the operation on the secondary side of the heating to switch the circulation switching means 12 so that the heat exchange circuit 10 can circulate (in this embodiment, the on-off valve is closed), The heating circulation pump 6 and the heating means 2 are driven and activated, the high-temperature water boiled by the heating means 2 is directly supplied to the heat exchanger 9, and the hot water whose temperature has decreased due to heat exchange with the secondary side is again heated. It circulates directly to No. 2 and heats again by heating. Note that the heating operation in this case is referred to as a direct heating operation.

  In the heating operation, when the heating means 2 is not operating for some reason, the control means 20 switches the circulation switching means 12 so that the heating circulation circuit 3 can circulate (in this embodiment, the on-off valve is opened). In addition, the heat exchange circulation pump 11 is driven to circulate the high-temperature water stored in the upper part of the hot water storage tank 1 through the heat exchanger 9 and return it to the hot water storage tank 1 again. It makes it possible to perform heating operation using it. In addition, the heating operation in this case is called a heat storage operation.

  Further, for example, when the amount of remaining hot water in the hot water storage tank 1 decreases due to the use of hot water supply during the direct warming operation, and the request for the heating operation and the request for the hot water storage operation occur at the same time, the control means 20 While performing the direct warming operation by the heating circulation pump 6, the circulation switching means 12 is switched so that the heating circulation circuit 3 can circulate (in this embodiment, the on-off valve is opened), and the heat exchange circulation pump 11 is driven.

  Then, the control means 20 controls the capacity of the heat exchanger pump 11 so that the flow direction detected by the flow direction detection means 15 becomes the direction of flowing out from the hot water storage tank 1. By doing so, as shown by the arrows in FIG. 2, the hot water storage operation can be performed simultaneously with the direct warming operation.

  Next, for example, when the heating capacity of the heating means 2 cannot catch up with the heating load during the direct warming operation, the control means 20 uses the heating means 2 and the heating circulation pump 6. While performing the direct warming operation, the circulation switching means 12 is switched so that the heating circulation circuit 3 can circulate (in this embodiment, the on-off valve is opened), and the heat exchange circulation pump 11 is driven.

  And the control means 20 controls the capability of the heat exchanger pump 11 so that the flow direction detected by the flow direction detection means 15 becomes the direction flowing into the hot water storage tank 1. By doing so, as shown by the arrows in FIG. 3, the heat storage operation can be performed at the same time as performing the direct heating operation, and heating is performed with the capability of the heating means 2 plus the heat storage in the hot water storage tank 1. Operation can be performed and substantial heating capacity can be increased.

  During the simultaneous operation of the direct warming operation and the hot water storage operation or the warming operation, the flow in the vicinity of the hot water storage tank 1 tends to become unstable due to the balance between the capacity of the heating circulation pump 6 and the capacity of the heat exchange circulation pump 11, for example, heating In the case where the means 2 and the heating circulation pump 6 are unitized and installed separately from the hot water storage tank 1, the heating circulation pump 6 and the heat exchange circulation pump depend on the piping distance between the heating unit and the hot water storage tank 1. When the piping distance is long, the capacity of the heating circulation pump 6 is lower than the capacity of the heat exchanger pump 11, and conversely when the piping distance is short, the heating circulation pump 6 may be higher than the capacity of the heat exchanger pump 11. In this case, if the capacity of the heat exchanger pump 11 is fixed, it is unclear whether the hot water storage operation or the heat storage operation is performed when the heat exchanger pump 11 is driven in addition to the heating circulation pump 6. It was.

  However, in the present invention, the capacity of the heat exchange circulation pump 11 is controlled based on the flow direction detected by the flow direction detection means 15 as described above, so that the heating circulation pump 6 and the heat exchange circulation pump 11 are operated at that time. Therefore, it is possible to provide a hot water storage hot water apparatus that can be appropriately controlled in accordance with the operation and the reliability of operation is improved and the reliability is high. The control means 20 drives and controls the capacity of the heating circulation pump 6 in coordination with the heating capacity of the heating means 2, and controls the capacity of the heat exchanger pump 11 based on the output of the flow direction detection means 15. Thus, there is an advantage that each control can be easily performed.

  The flow direction detecting means 15 is not limited to the arrangement position of the above-described embodiment, and may be provided in the heating return pipe 5 on the hot water storage tank 1 side of the heat circulation circuit 10 of the heating circuit 3. In this case, the detection direction (inflow and outflow) is opposite to that of the above-described embodiment, and the control means 20 may be changed so as to control the heat exchanger pump 11 in accordance with this relationship. Is.

  Next, a hot water storage type hot water supply / room heating apparatus according to a second embodiment of the present invention will be described. In addition, about the structure same as previous one Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In this embodiment, as shown in FIG. 4, instead of the circulation switching means 12 of the previous embodiment, a heating circulation amount detection means 21 for detecting the circulation amount of the heating circulation circuit 3 and a circulation of the heat exchange circuit 10. A heat exchange circulation amount detection means 22 for detecting the amount, and the control means 20 controls the capacity of the heat exchange circulation pump 11 based on the outputs of the heating circulation amount detection means 21 and the heat exchange circulation amount detection means 22. I made it. Here, the heating circulation amount detection means 21 is provided in the heating forward pipe 4 on the heating means 2 side of the heat exchange circulation circuit 10 of the heating circulation circuit 3, and the heat exchange circulation amount detection means 22 is provided in the heat exchange circulation circuit 10. The heating circulation circuit 3 is provided at a position that is not shared.

  For example, when the amount of remaining hot water in the hot water storage tank 1 decreases due to the use of hot water during direct warming operation and a request for heating operation and a request for hot water storage operation occur simultaneously, the control means 20 While performing the direct warming operation by the heating circulation pump 6, the circulation switching means 12 is switched so that the heating circulation circuit 3 can circulate (in this embodiment, the on-off valve is opened), and the heat exchange circulation pump 11 is driven.

  Then, the control means 20 compares the circulation amount Q1 detected by the heating circulation amount detection means 21 with Q2 detected by the heat exchange circulation amount detection means 22, and the heating circulation amount Q1 is larger than the heat exchange circulation amount Q2. Thus, the capacity of the heat exchanger pump 11 is controlled. By doing so, as shown by the arrow in FIG. 5, the hot water storage operation can be performed simultaneously with the direct warming operation.

  Next, for example, when the heating capacity of the heating means 2 cannot catch up with the heating load during the direct warming operation, the control means 20 uses the heating means 2 and the heating circulation pump 6. While performing the direct warming operation, the circulation switching means 12 is switched so that the heating circulation circuit 3 can circulate (in this embodiment, the on-off valve is opened), and the heat exchange circulation pump 11 is driven.

  Then, the control means 20 compares the circulation amount Q1 detected by the heating circulation amount detection means 21 with Q2 detected by the heat exchange circulation amount detection means 22, and the heat exchange circulation amount Q2 is more than the heating circulation amount Q1. The capacity of the heat exchanger pump 11 is controlled so as to increase. By doing so, as shown by the arrows in FIG. 6, the heat storage operation can be performed at the same time as performing the direct heating operation, and heating is performed with the capability of the heating means 2 plus the heat storage in the hot water storage tank 1. Operation can be performed and substantial heating capacity can be increased.

  During the simultaneous operation of the direct heating operation and the hot water storage operation or the warm storage operation, the flow in the vicinity of the hot water storage tank 1 tends to become unstable due to the balance between the capacity of the heating circulation pump 6 and the capacity of the heat exchange circulation pump 11, for example In the case where the means 2 and the heating circulation pump 6 are unitized and installed separately from the hot water storage tank 1, the heating circulation pump 6 and the heat exchange circulation pump depend on the piping distance between the heating unit and the hot water storage tank 1. When the piping distance is long, the capacity of the heating circulation pump 6 is lower than the capacity of the heat exchanger pump 11, and conversely when the piping distance is short, the heating circulation pump 6 may be higher than the capacity of the heat exchanger pump 11. In this case, if the capacity of the heat exchanger pump 11 is fixed, it is unclear whether the hot water storage operation or the heat storage operation is performed when the heat exchanger pump 11 is driven in addition to the heating circulation pump 6. It was.

  However, in the present invention, the capacity of the heat exchange circulation pump 11 is set based on the heating circulation amount Q1 and the heat exchange circulation amount Q2 output from the heating circulation amount detection means 21 and the heat exchange circulation amount detection means 22 as described above. Since it controls, the heating circulation pump 6 and the heat exchange circulation pump 11 can be appropriately controlled according to the operation state at that time, and the reliability of operation is improved and a hot water storage hot water apparatus with high reliability can be provided. The control means 20 drives and controls the capacity of the heating circulation pump 6 in coordination with the heating capacity of the heating means 2, and the capacity of the heat exchange circulation pump 11 is detected by the heating circulation amount detection means 21 and the heat exchange circulation amount. Since the control is performed based on the output of the means 22, each control can be easily performed.

  The heating circulation amount detection means 21 is not limited to the arrangement position of the above-described embodiment, but is provided in the heating return pipe 5 on the heating means 2 side of the heating circulation circuit 3 than the heat exchange circulation circuit 10. In addition, the heat exchange circulation amount detection means 22 may also be provided on the upstream side of the heat exchanger 9 in the heat exchange circulation circuit 10. Further, the configuration of the heat exchange circuit 10 is not limited to the configuration of the above-described embodiment. The heat exchanger 9 and the hot water storage tank 1 are connected by the heat exchange circuit 10 and the hot water storage tank 1 is temporarily connected. The hot water may be circulated between the heating means 2 and the heat exchanger 9.

  In the above two embodiments, the control means 20 controls only the capability of the heat exchange circulation pump 11 based on the outputs of the flow direction detection means 15 or the heating circulation amount detection means 21 and the heat exchange circulation amount detection means 22. However, the present invention is not limited to this, and the capacity of the heat circulation pump 11 may be controlled by fixing the capacity of the heat exchange circulation pump 11, or the heat exchange circulation pump 11 and the heat circulation pump 6 may be controlled. Both of these abilities may be controlled.

  Next, a hot water storage type hot water supply and heating apparatus according to a third embodiment of the present invention will be described. In addition, about the structure same as previous one Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In this embodiment, as shown in FIG. 7, a heating circulation amount detecting means 21 for detecting the circulation amount Q1 is provided only in the heating circulation circuit 3, and the control means 20 includes the heat exchanger pump 11 Is provided with a storage means 23 for storing in advance the relationship between the capacity (the number of revolutions) of the engine and the circulation amount Q2 of the heat exchanger circuit 10. The control means 20 compares the heating circulation quantity Q1 detected by the heating circulation quantity detection means 21 with the heat exchange circulation quantity Q2 stored in the storage means 23, and based on the comparison result, the heat exchange circulation pump 11 abilities are controlled.

  For example, when the amount of remaining hot water in the hot water storage tank 1 is reduced by using hot water during direct warming operation, and the request for heating operation and the request for hot water storage operation occur simultaneously, the control means 20 While performing the direct warming operation by the heating circulation pump 6, the circulation switching means 12 is switched so that the heating circulation circuit 3 can circulate (in this embodiment, the on-off valve is opened), and the heat exchange circulation pump 11 is driven.

  Then, the control means 20 compares the circulation amount Q1 detected by the heating circulation amount detection means 21 with the content stored in the storage means 23, and the heat exchange circulation amount Q2 is equal to or less than the heating circulation amount Q1. The ability of the circulation pump 11 is obtained, and the ability of the heat exchanger pump 11 is controlled by this ability. By doing so, as shown by the arrows in FIG. 8, the hot water storage operation can be performed simultaneously with the direct warming operation.

  Next, for example, when the heating capacity of the heating means 2 cannot catch up with the heating load during the direct warming operation, the control means 20 uses the heating means 2 and the heating circulation pump 6. While performing the direct warming operation, the circulation switching means 12 is switched so that the heating circulation circuit 3 can circulate (in this embodiment, the on-off valve is opened), and the heat exchange circulation pump 11 is driven.

  Then, the control means 20 compares the circulation amount Q1 detected by the heating circulation amount detection means 21 with the content stored in the storage means 23, and the heat exchange circulation amount Q2 is equal to or higher than the heating circulation amount Q1. The ability of the AC pump 11 is obtained, and the ability of the heat exchanger pump 11 is controlled by this ability. By doing so, as shown by an arrow in FIG. 9, the heat storage operation can be performed at the same time as performing the direct heating operation, and heating is performed with the capability of the heating means 2 plus the heat storage in the hot water storage tank 1. Operation can be performed and substantial heating capacity can be increased.

  During the simultaneous operation of the direct warming operation and the hot water storage operation or the warming operation, the flow in the vicinity of the hot water storage tank 1 tends to become unstable due to the balance between the capacity of the heating circulation pump 6 and the capacity of the heat exchange circulation pump 11, for example, heating In the case where the means 2 and the heating circulation pump 6 are unitized and installed separately from the hot water storage tank 1, the heating circulation pump 6 and the heat exchange circulation pump depend on the piping distance between the heating unit and the hot water storage tank 1. When the piping distance is long, the capacity of the heating circulation pump 6 is lower than the capacity of the heat exchanger pump 11, and conversely when the piping distance is short, the heating circulation pump 6 may be higher than the capacity of the heat exchanger pump 11. In this case, if the capacity of the heat exchanger pump 11 is fixed, it is unclear whether the hot water storage operation or the heat storage operation is performed when the heat exchanger pump 11 is driven in addition to the heating circulation pump 6. It was.

  However, in the present invention, since the capacity of the heat exchange circulation pump 11 is controlled based on the heating circulation amount Q1 output from the heating circulation amount detection means 21 and the storage contents of the storage means 23 as described above, the heat exchange circulation pump 11 Can be appropriately controlled in accordance with the operation status at that time, and the reliability of operation is improved and a hot water storage hot water apparatus with high reliability can be provided. The control means 20 drives and controls the capacity of the heating circulation pump 6 in cooperation with the heating capacity of the heating means 2, and the capacity of the heat exchanger pump 11 is controlled by the output of the heating circulation amount detection means 21 and the storage means 23. Since the control is performed on the basis of the stored contents, the respective control can be easily performed.

  The heating circulation amount detection means 21 is not limited to the arrangement position of the above-described embodiment, but is provided in the heating return pipe 5 on the heating means 2 side of the heating circulation circuit 3 than the heat exchange circulation circuit 10. Is also good. Further, the configuration of the heat exchange circuit 10 is not limited to the configuration of the above-described embodiment. The heat exchanger 9 and the hot water storage tank 1 are connected by the heat exchange circuit 10 and the hot water storage tank 1 is temporarily connected. The hot water may be circulated between the heating means 2 and the heat exchanger 9.

  Further, the relationship between the capacity (rotation speed) of the heat exchanger circuit 11 stored in the storage means 23 and the circulation amount Q2 of the heat exchanger circuit 10 is obtained in advance by a test and stored in the form of a data table or approximate expression. It is a good thing.

  Further, the content stored in the storage means 23 is replaced with the capacity (rotation speed) of the heat exchange circulation pump 11 instead of the relationship between the capacity (rotation speed) of the heat exchange circulation pump 11 and the circulation amount Q2 of the heat exchange circulation circuit 10. ) And the circulation amount Q1 of the heating circulation circuit 3 may be used. In this case, for example, the ability (rotation speed) of the heat exchange circulation pump 11 corresponding to the heating circulation amount Q1 when performing the direct warming operation and the hot water storage operation simultaneously is obtained in advance by a test, and the direct warming operation and the warming storage are performed. What is necessary is just to obtain | require previously the capability (rotation speed) of the heat exchange circulation pump 11 according to the heating circulation amount Q1 at the time of simultaneous operation, and to memorize these in the form of a data table or the like. At the time of actual operation, from the mode of the simultaneous operation of the direct warming operation and the hot water storage operation or the warming operation, the heating circulation amount Q1 detected by the heating circulation amount detecting means 21 and the contents stored in the storage means 23 The control means 21 selects the optimum capacity of the heat exchanger pump 11 in this situation, and controls the ability of the heat exchanger pump 11 with this ability.

  As described above, since the capacity of the heat exchanger pump 11 is controlled based on the heat circulating amount Q1 output from the heater circulating amount detector 21 and the stored contents of the storage means 23, the heat exchanger pump 11 is adjusted to the current operating condition. Therefore, it is possible to provide a hot water storage hot water apparatus that can be appropriately controlled and has high operational reliability and high reliability. The control means 20 drives and controls the capacity of the heating circulation pump 6 in cooperation with the heating capacity of the heating means 2, and the capacity of the heat exchanger pump 11 is controlled by the output of the heating circulation amount detection means 21 and the storage means 23. Since the control is performed on the basis of the stored contents, the respective control can be easily performed.

  In these embodiments, the circulation switching means 12 is constituted by an on-off valve. However, the circulation switching means 12 may be constituted by a three-way valve or a distribution ratio control valve, and is an arbitrary configuration. As described above, the present invention is not limited to the above-described one embodiment and another embodiment, and the present invention can be arbitrarily modified without departing from the scope of the present invention, and does not hinder this.

1 is a schematic configuration diagram of a first embodiment of the present invention. The figure explaining the action | operation of the same embodiment. The figure explaining other operation | movement of the same embodiment. The schematic block diagram of the 1st Embodiment of this invention. The figure explaining the action | operation of the same embodiment. The figure explaining other operation | movement of the same embodiment. The schematic block diagram of 3rd one Embodiment of this invention. The figure explaining the action | operation of the same embodiment. The figure explaining other operation | movement of the same embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hot water storage tank 2 Heating means 3 Heating circulation circuit 6 Heating circulation pump 9 Heat exchanger 10 Heat exchange circulation circuit 11 Heat exchange circulation pump 15 Flow direction detection means 20 Control means 21 Heating circulation amount detection means 22 Heat exchange circulation amount detection means 23 Storage means

Claims (9)

A hot water storage tank for storing hot water, heating means for heating the hot water in the hot water storage tank, and the hot water storage tank so as to flow out from the hot water storage tank through a heating forward pipe and into the hot water storage tank through a heating return pipe; A heating circulation circuit for connecting hot water to the heating means so as to circulate, a heating circulation pump for circulating hot water in the heating circulation circuit, a heat exchanger for heating hot water on the secondary side, and the heat A heat exchange circuit that connects the exchanger and the heating means so that hot water can circulate and bypasses the hot water storage tank in the middle of the heating circuit, and heat that is provided in the heat exchange circuit and circulates hot water A flow direction detecting means for detecting whether hot water is flowing in or out of the hot water storage tank, and the hot water circulating tank side of the hot water circulating circuit is more Provided the heat forward pipe, when performing straight-warm operation and the hot water storage operation at the same time, it controls the heating circulation pump or the ability of the heat exchange circulation pump so that the output of the flow direction detecting means is in a direction flowing out from the hot water storage tank A hot water storage type hot water apparatus, characterized in that a control means is provided. The control means, when performing the direct warming operation and the warming storage operation at the same time, has the capability of the heating circulation pump or the heat exchange circulation pump so that the output of the flow direction detection means is in the direction of flowing into the hot water storage tank. The hot water storage type hot water device according to claim 1, wherein the hot water storage device is controlled. A hot water storage tank for storing hot water, heating means for heating the hot water in the hot water storage tank, and the hot water storage tank so as to flow out from the hot water storage tank through a heating forward pipe and into the hot water storage tank through a heating return pipe; A heating circulation circuit for connecting hot water to the heating means so as to circulate, a heating circulation pump for circulating hot water in the heating circulation circuit, a heat exchanger for heating hot water on the secondary side, and the heat A heat exchange circuit that connects the exchanger and the heating means so that hot water can circulate and bypasses the hot water storage tank in the middle of the heating circuit, and heat that is provided in the heat exchange circuit and circulates hot water A flow direction detecting means for detecting whether hot water is flowing in or out of the hot water storage tank, and the hot water circulating tank side of the hot water circulating circuit is more Provided the heat return pipe, when performing straight-warm operation and the hot water storage operation at the same time, it controls the heating circulation pump or the ability of the heat exchange circulation pump so that the output of the flow direction detecting means is in a direction flowing into the hot water storage tank A hot water storage type hot water apparatus, characterized in that a control means is provided. When the controller directly performs the direct warming operation and the heat accumulating operation simultaneously , the control means can control the capacity of the heating circulation pump or the heat exchange circulation pump so that the output of the flow direction detecting means is in the direction of flowing out of the hot water storage tank. 4. The hot water storage type hot water apparatus according to claim 3, wherein the hot water storage apparatus is controlled. A hot water storage tank for storing hot water, a heating means for heating the hot water in the hot water storage tank, a heating circulation circuit for connecting the hot water storage tank and the heating means so that hot water can circulate, and hot water provided in the heating circulation circuit A heat circulation pump for circulating the water, a heat exchanger for heating the hot water on the secondary side, a heat exchange circuit for connecting the heat exchanger and the heating means so that the hot water can circulate, and the heat exchange circulation A heat exchange circulation pump that is provided in the circuit and circulates hot and cold water, detects a circulation amount of the heating circulation circuit, and a heat exchange circulation amount detection means that detects the circulation amount of the heat exchange circuit When the direct heating operation and the hot water storage operation are performed simultaneously , the heating circulation pump or the heat exchange circulation pump is configured so that the output of the heating circulation amount detection means is larger than the output of the heat exchange circulation amount detection means. Control ability Storage-type water heater, wherein a provided control means for. When the control means performs the direct warming operation and the heat storage operation simultaneously , the heating circulation pump or the heat exchange circulation is performed so that the output of the heating circulation amount detection means is smaller than the output of the heat exchange circulation amount detection means. 6. A hot water storage type hot water apparatus according to claim 5, wherein the capacity of the pump is controlled. A hot water storage tank for storing hot water, a heating means for heating the hot water in the hot water storage tank, a heating circulation circuit for connecting the hot water storage tank and the heating means so that hot water can circulate, and hot water provided in the heating circulation circuit A heat circulation pump for circulating the water, a heat exchanger for heating the hot water on the secondary side, a heat exchange circuit for connecting the heat exchanger and the heating means so that the hot water can circulate, and the heat exchange circulation A heat exchange circulation pump provided in the circuit for circulating hot water, and a heating circulation amount detecting means for detecting a circulation amount of the heating circulation circuit; a capacity of the heat exchange circulation pump and a circulation amount of the heat exchange circulation circuit; Storage means for storing the relationship in advance, and when the direct warming operation and the hot water storage operation are performed simultaneously , the storage means is arranged so that the circulation amount of the heat exchange circuit is equal to or less than the output of the heating circulation amount detection means. Remembering the heat exchange Determined the ability of the ring pump, the hot water storage type hot-water apparatus characterized in that a control means for controlling the capacity of the heat exchange circulation pump in this capacity. The control means stores the storage means so that the circulation amount of the heat exchange circuit becomes equal to or greater than the output of the heating circulation amount detection means when performing the direct warming operation and the heat storage operation simultaneously . The hot water storage type hot water apparatus according to claim 7, wherein the capacity of the heat exchange circulation pump is obtained, and the ability of the heat exchange circulation pump is controlled by this ability.   A hot water storage tank for storing hot water, a heating means for heating the hot water in the hot water storage tank, a heating circulation circuit for connecting the hot water storage tank and the heating means so that hot water can circulate, and hot water provided in the heating circulation circuit A heat circulation pump for circulating the water, a heat exchanger for heating the hot water on the secondary side, a heat exchange circuit for connecting the heat exchanger and the heating means so that the hot water can circulate, and the heat exchange circulation A heat exchange circulation pump provided in the circuit for circulating hot water and water, and a heating circulation amount detecting means for detecting a circulation amount of the heating circulation circuit, and the heat exchange circulation at the time of simultaneous operation of direct warming operation and hot water storage operation The relationship between the capacity of the pump and the circulation amount of the heating circulation circuit and the relationship between the capacity of the heat exchange circulation pump and the circulation amount of the heating circulation circuit when performing the direct warming operation and the heat storage operation simultaneously are stored in advance. Storage means for Based on the operation mode, the output of the heating circulation amount detection means and the stored contents of the storage means, the ability of the heat exchange circulation pump is obtained, and control means for controlling the ability of the heat exchange circulation pump with this ability is provided. A hot water storage hot water device characterized by that.

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