CN220083167U - Heat accumulating type low-temperature water heating heat pump unit - Google Patents
Heat accumulating type low-temperature water heating heat pump unit Download PDFInfo
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- CN220083167U CN220083167U CN202320548627.5U CN202320548627U CN220083167U CN 220083167 U CN220083167 U CN 220083167U CN 202320548627 U CN202320548627 U CN 202320548627U CN 220083167 U CN220083167 U CN 220083167U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 238000010438 heat treatment Methods 0.000 title claims abstract description 73
- 238000005338 heat storage Methods 0.000 claims abstract description 28
- 238000001704 evaporation Methods 0.000 claims abstract description 19
- 230000008020 evaporation Effects 0.000 claims abstract description 19
- 238000000605 extraction Methods 0.000 claims abstract description 16
- 238000009825 accumulation Methods 0.000 claims abstract description 14
- 238000009833 condensation Methods 0.000 claims abstract description 13
- 230000005494 condensation Effects 0.000 claims abstract description 13
- 230000001172 regenerating effect Effects 0.000 claims 7
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 230000005611 electricity Effects 0.000 abstract description 8
- 238000004146 energy storage Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The heat accumulating type low temperature water heating heat pump unit comprises an evaporation heat exchanger, a compressor, a condensation heat exchanger, a closed type heat accumulating water tank and a heat exchange balance tank, wherein the evaporation heat exchanger is connected with a low temperature water source water supply pipe and a low temperature water source drain pipe to form a heat source supply loop I; the evaporation heat exchanger is connected with the compressor and the condensation heat exchanger to form a second heat extraction loop; the condensing heat exchanger is connected with a user through a hot water outlet pipe and a hot water return pipe to form a heating heat supply loop III; the condensing heat exchanger is connected with the closed heat storage water tank and the heat exchange balance tank to form a heat storage and heat accumulation loop IV; the heat exchange balance tank is communicated with the hot water outlet pipe, the user and the hot water return pipe to form a heating heat supply loop V. The utility model can not only overcome the influence of the environmental temperature on the heating and heat conversion rate of the low-temperature water heating heat pump unit, but also realize the function of energy storage by using the off-peak electricity price at night.
Description
Technical Field
The utility model belongs to the technical field of electric heating, and particularly relates to a heat accumulating type low-temperature water heating heat pump unit.
Background
The existing heat pump type electric heating products circulated in the market mainly comprise instant heating when being started up, and a common electric boiler performs electric heat conversion by utilizing a resistance wire heating or electromagnetic conversion principle, so that the heat conversion efficiency is low, the energy efficiency ratio is generally about 0.95, and the energy consumption is large. The air source heat pump unit utilizes the heat pump technology to extract heat from the outdoor air by utilizing the low-temperature evaporation principle of an evaporator and then utilizes the high-temperature cooling principle of a condenser to realize heat transfer, so that the heat transfer effect is achieved, but the heat transfer rate of the unit is directly affected by the outdoor environment, when the outdoor environment temperature is lower than zero 27 ℃, most of the energy efficiency ratio of products is about 1, and the selection, namely the distribution load and the investment are increased to achieve the heating effect in the low-temperature environment. The common ground source heat pump products are characterized in that heat is extracted from underground water or soil by utilizing a low-temperature evaporation principle of an evaporator by utilizing a heat pump technology, and heat transfer is realized by utilizing a high-temperature cooling principle of a condenser, so that a heat conversion effect is achieved, the influence of the ambient temperature of a heating heat conversion rate of a ground source heat pump unit can be overcome, but the energy-saving effect of a heating system cannot be achieved optimally by utilizing a night low-valley electricity price energy storage function.
Disclosure of Invention
In view of the above-mentioned shortcomings and disadvantages of the prior art, the utility model provides a heat accumulating type low-temperature water heating heat pump unit, which can not only overcome the influence of the environmental temperature on the heating conversion rate of the low-temperature water heating heat pump unit, but also realize the function of utilizing the off-peak electricity price at night to store energy, thereby saving the heating operation cost to the maximum extent for users.
In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:
the heat accumulating type low-temperature water heating heat pump unit comprises an evaporation heat exchanger, a compressor, a condensation heat exchanger, a closed heat accumulating water tank and a heat exchange balance tank, wherein the evaporation heat exchanger is connected with a low-temperature water source water supply pipe and a low-temperature water source drain pipe to form a heat source supply loop I; the evaporation heat exchanger is connected with the compressor and the condensation heat exchanger to form a second heat extraction loop; the condensing heat exchanger is connected with a user through a hot water outlet pipe and a hot water return pipe to form a heating heat supply loop III; the condensing heat exchanger is connected with the closed heat storage water tank and the heat exchange balance tank to form a heat storage and heat accumulation loop IV; the heat exchange balance tank is communicated with the hot water outlet pipe, the user and the hot water return pipe to form a heating heat supply loop V.
Further, the evaporation heat exchanger is connected with the compressor and the condensation heat exchanger to form a second heat extraction loop, and a throttling device is arranged in the second heat extraction loop.
Further, a second electric valve and a third electric valve are respectively arranged on the hot water outlet pipe and the hot water return pipe.
Further, a temperature sensor is arranged on the hot water return pipe.
Further, a pressure-controlled variable frequency pump and a pressure sensor are also arranged on the hot water return pipe.
Further, the pressure-controlled variable frequency pump is arranged in a fourth heat storage loop formed by the condensation heat exchanger, the closed heat storage water tank and the heat exchange balance tank.
Further, in the fourth heat storage and accumulation loop, a first electric valve is arranged between the condensing heat exchanger and the closed heat storage water tank, and a fourth electric valve is arranged between the closed heat storage water tank and the heat exchange balance tank.
Further, a temperature control variable frequency pump and a fifth electric valve are arranged on a pipeline, which is communicated with the hot water outlet pipe, of the heat exchange balance tank in the heating heat supply loop.
The beneficial effects of the utility model are as follows:
the heat accumulating type low-temperature water heating heat pump unit utilizes the heat pump technology to extract heat from low-temperature water by utilizing the low-temperature evaporation principle of an evaporator, and then utilizes the high-temperature cooling principle of a condenser to realize heat transfer, so that the heat conversion effect is achieved, meanwhile, the water path circulation automatic switching can be realized through the arrangement of the timing heat exchange balance tank device to perform heat accumulation while heating, after heat accumulation is finished, heat accumulated by valley electricity is utilized to perform heat output according to the temperature change of return water at the tail end to heat in peak electricity and average electricity periods, and the low-valley electricity price heating can be realized. The system can overcome the influence of the environmental temperature on the heating and heat conversion rate of the low-temperature water heating heat pump unit, can realize the function of utilizing the off-peak electricity price energy storage at night, and maximally saves the heating operation cost for users.
Drawings
FIG. 1 is a schematic diagram of a heat accumulating type low-temperature water heating heat pump unit;
FIG. 2 is a schematic diagram of the structure of the first heat source supply circuit, the second heat extraction circuit, and the third heating heat supply circuit;
fig. 3 is a schematic diagram of the structure when the first heat source supply circuit, the second heat extraction circuit, the fourth heat storage circuit and the fifth heating heat supply circuit are opened.
The components in the figure: 1. a low-temperature water source water supply pipe, 2, a low-temperature water source drain pipe, 3, an evaporation heat exchanger, 4, a compressor, 5, a condensation heat exchanger, 6, a throttling device, 7, a first electric valve, 8, a bypass valve, 9, a second electric valve, 10, a hot water outlet pipe, 11 and a hot water return pipe, 12, a third electric valve, 13, a voltage-controlled variable frequency pump, 14, a closed heat storage water tank, 15, a fourth electric valve, 16, a fifth electric valve, 17, a temperature-controlled variable frequency pump, 18, a heat exchange balance tank, 19, a pressure sensor, 20 and a temperature sensor.
Description of the embodiments
The utility model will be better explained by the following detailed description of the embodiments with reference to the drawings.
As shown in fig. 1, the utility model provides a heat accumulating type low-temperature water heating heat pump unit, which comprises a low-temperature water source water supply pipe 1, a low-temperature water source water discharge pipe 2, an evaporation heat exchanger 3, a compressor 4, a condensation heat exchanger 5, a throttling device 6, a first electric valve 7, a bypass valve 8, a second electric valve 9, a hot water outlet pipe 10, a hot water return pipe 11, a third electric valve 12, a pressure-controlled variable frequency pump 13, a closed heat accumulating water tank 14, a fourth electric valve 15, a fifth electric valve 16, a temperature-controlled variable frequency pump 17, a heat exchange balance tank 18, a pressure sensor 19 and a temperature sensor 20.
The evaporation heat exchanger 3 is connected with the low-temperature water source drain pipe 2 to form a heat source supply loop I; the evaporation heat exchanger 3, the compressor 4, the condensation heat exchanger 5 and the throttling device 6 are connected to form a second heat extraction loop; the condensing heat exchanger 5, the second electric valve 9, the hot water outlet pipe 10, the hot water return pipe 11, the third electric valve 12 and the pressure-controlled variable frequency pump 13 are connected and communicated with a user to form a heating heat supply loop III; the condensing heat exchanger 5, the first electric valve 7, the closed heat storage water tank 14, the fourth electric valve 15, the heat exchange balance tank 18 and the pressure-controlled variable frequency pump 13 are connected to form a heat storage and heat accumulation loop IV; the hot water return pipe 11, the heat exchange balance tank 18, the temperature control variable frequency pump 17, the fifth electric valve 16 and the hot water outlet pipe 10 are connected and communicated with a user to form a heating heat supply loop five. Valves are arranged at the input end and the output end of each component.
Each circulation loop is controlled by a central control system of the heat accumulating type low-temperature water heating heat pump unit in a unified way. The functions that can be implemented include: 1. the on-site control unit starts a direct heating mode: as shown in fig. 2, the first heat source supply circuit, the second heat extraction circuit and the third heating heat supply circuit are opened, and the unit is used for instant heating and instant heating; 2. and the on-site control unit starts a heat storage and heating mode: as shown in fig. 3, the first heat source supply circuit, the second heat extraction circuit, the fourth heat storage circuit and the fifth heating heat supply circuit are opened, and the unit is heated while storing heat on the premise of not damaging the hydraulic balance of the terminal heating; 3. the timing control unit starts a direct heating mode: the first heat source supply circuit, the second heat extraction circuit and the third heating heat supply circuit are opened, and the unit heats and heats at regular time; 4. the timing control unit starts a heat storage and heating mode: the first heat source supply loop, the second heat extraction loop, the fourth heat storage and heat accumulation loop and the fifth heating heat supply loop are opened, and the timing control unit is used for heating while accumulating heat on the premise of not damaging the hydraulic balance of terminal heating; 5. the remote control unit starts a direct heating mode: the first heat source supply loop, the second heat extraction loop and the third heating heat supply loop are opened, and the unit can remotely control instant heating and instant heating; 6. the remote control unit starts a heat storage and heating mode: the heat source supply loop I, the heat extraction loop II, the heat storage and heat accumulation loop IV and the heating heat supply loop V are opened, and the remote control unit heats while storing heat on the premise of not damaging the hydraulic balance of terminal heating.
In the second loop, the circulating medium is a Freon refrigerant, and the Freon refrigerant is in a low-temperature (0-2 ℃) low-pressure state in the evaporation heat exchanger 3 through the work of the compressor 4 and the control of the throttling device 6, so that the Freon refrigerant absorbs heat from low-temperature water. The condensing heat exchanger 5 is in a high-temperature (65-70 ℃) high-pressure state, and releases heat into the high-temperature water. Thereby realizing the transfer of heat energy from the low-temperature medium to the high-temperature medium.
In the fourth loop, the voltage controlled variable frequency pump 13 provides kinetic energy for circulation of the heat transfer medium from the unit to the user back to the unit when the unit starts the direct heating mode. When the unit starts the heat storage and heating mode, kinetic energy is provided for circulation of the heat transfer medium from the unit to the high-temperature water tank and back to the unit. The frequency of operation of the water pump is controlled by the pressure set by the pressure sensor 19.
In the fifth loop, the temperature-control variable frequency pump 17 does not work when the unit starts the direct heating mode, and provides kinetic energy for the heat transfer medium from the heat exchange balance tank 18 to the user and back to the heat exchange balance tank 18 when the unit starts the heat storage heating mode, and the operation frequency of the water pump is controlled by the temperature set by the user side.
The heat exchange balance tank 18 is shared by the loop four and the loop five, does not work when the unit starts a direct heating mode, and realizes heat exchange by mixing high-temperature and low-temperature mediums when the unit starts a heat storage heating mode, and simultaneously ensures hydraulic balance of the loop four and the loop five.
The bypass valve 8 (normally open) is mainly used for supplying heat to the closed heat storage water tank 14 during direct heating circulation, so as to prevent frost heaving caused by too low medium temperature in the water tank when the unit is in a direct heating mode for a long time.
While embodiments of the present utility model have been shown and described above, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that alterations, modifications, substitutions and variations may be made by those of ordinary skill in the art without departing from the scope of the utility model.
Claims (8)
1. The utility model provides a heat accumulation formula low temperature water heating heat pump set which characterized in that: the heat source device comprises an evaporation heat exchanger (3), a compressor (4), a condensation heat exchanger (5), a closed heat storage water tank (14) and a heat exchange balance tank (18), wherein the evaporation heat exchanger (3) is connected with a low-temperature water source water supply pipe (1) and a low-temperature water source drain pipe (2) to form a first heat source supply loop; the evaporation heat exchanger (3) is connected with the compressor (4) and the condensation heat exchanger (5) to form a second heat extraction loop; the condensing heat exchanger (5) is connected with a user through a hot water outlet pipe (10) and a hot water return pipe (11) to form a heating heat supply loop III; the condensing heat exchanger (5) is connected with the closed heat storage water tank (14) and the heat exchange balance tank (18) to form a heat storage and heat accumulation loop IV; the heat exchange balance tank (18) is communicated with the hot water outlet pipe (10), the user and the hot water return pipe (11) to form a heating heat supply loop V.
2. A regenerative low-temperature water heating heat pump unit according to claim 1, wherein: the evaporation heat exchanger (3) is connected with the compressor (4) and the condensation heat exchanger (5) to form a second heat extraction loop, and a throttling device (6) is arranged in the second heat extraction loop.
3. A regenerative low-temperature water heating heat pump unit according to claim 1, wherein: the hot water outlet pipe (10) and the hot water return pipe (11) are respectively provided with a second electric valve (9) and a third electric valve (12).
4. A regenerative low-temperature water heating heat pump unit according to claim 3, wherein: the hot water return pipe (11) is provided with a temperature sensor (20).
5. A regenerative low-temperature water heating heat pump unit according to claim 3, wherein: the hot water return pipe (11) is also provided with a pressure-controlled variable frequency pump (13) and a pressure sensor (19).
6. The regenerative low-temperature water heating heat pump unit according to claim 5, wherein: the pressure-controlled variable frequency pump (13) is arranged in a fourth heat storage loop formed by the condensing heat exchanger (5), the closed heat storage water tank (14) and the heat exchange balance tank (18).
7. A regenerative low-temperature water heating heat pump unit according to claim 1, wherein: in the heat accumulation and heat accumulation loop IV, a first electric valve (7) is arranged between the condensation heat exchanger (5) and the closed heat accumulation water tank (14), and a fourth electric valve (15) is arranged between the closed heat accumulation water tank (14) and the heat exchange balance tank (18).
8. A regenerative low-temperature water heating heat pump unit according to claim 1, wherein: and a temperature control variable frequency pump (17) and a fifth electric valve (16) are arranged on a pipeline, which is communicated with the hot water outlet pipe (10), of the heat exchange balance tank (18) in the heating heat supply loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320548627.5U CN220083167U (en) | 2023-03-21 | 2023-03-21 | Heat accumulating type low-temperature water heating heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320548627.5U CN220083167U (en) | 2023-03-21 | 2023-03-21 | Heat accumulating type low-temperature water heating heat pump unit |
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| Publication Number | Publication Date |
|---|---|
| CN220083167U true CN220083167U (en) | 2023-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320548627.5U Active CN220083167U (en) | 2023-03-21 | 2023-03-21 | Heat accumulating type low-temperature water heating heat pump unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220083167U (en) |
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2023
- 2023-03-21 CN CN202320548627.5U patent/CN220083167U/en active Active
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