CN220567508U - Half-cycle heat pump water boiler system - Google Patents
Half-cycle heat pump water boiler system Download PDFInfo
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- CN220567508U CN220567508U CN202321893395.3U CN202321893395U CN220567508U CN 220567508 U CN220567508 U CN 220567508U CN 202321893395 U CN202321893395 U CN 202321893395U CN 220567508 U CN220567508 U CN 220567508U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 165
- 238000005057 refrigeration Methods 0.000 claims abstract description 16
- 238000001704 evaporation Methods 0.000 claims abstract description 7
- 230000008020 evaporation Effects 0.000 claims abstract description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 7
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Abstract
The utility model discloses a half-cycle heat pump water boiler system, and belongs to the technical field of heat pumps. The system and the method comprise water supply, a steam discharge condenser, a valve, a water evaporator, a refrigeration compressor, an evaporator, an environmental heat source, an expansion mechanism, a booster pump, a steam compressor, a steam-water mixer and high-temperature hot water; the thermodynamic cycle of the refrigerating working medium is a complete inverse Rankine cycle, and the cycle of water as the working medium is only an open cycle of evaporation, compression and steam discharge of partial water supply, which can be regarded as a half cycle, so that the whole water boiler system can be called as a half cycle. The system can greatly improve the temperature and efficiency of the heat pump hot water system, save energy and improve the energy utilization rate, can be widely applied to various fields, and is a leap of heat pump technology.
Description
Technical Field
The utility model belongs to the field of new energy utilization, and mainly relates to a half-cycle heat pump water boiler system.
Background
The heat pump water heater is a novel hot water and heating heat pump product, and is a heating device and a hot water device capable of replacing a boiler. By applying the principle of the heat pump, only less electric energy is consumed, and the heat in the low-temperature environment is transferred to the water heater in the high-temperature environment to heat and prepare high-temperature hot water. Heat pump water heaters have been put into production and are in wide use in the marketplace.
How to use the heat pump technology to prepare boiling water, the heat pump is expanded to provide boiling water or even higher temperature hot water from providing hot water, and the heat pump can be used as a means of high-temperature energy storage, thereby becoming a break for further saving electric energy and expanding application.
Disclosure of Invention
The utility model aims to provide a half-cycle heat pump water boiler system by utilizing a mixed cycle method, which is based on closed-type and open-type mixed vapor compression refrigeration combined cycle (half-cycle), and changes environmental low-grade heat energy into high-grade heat energy by a heat pump technology.
In order to achieve the above object, the solution of the present utility model is:
a half-cycle heat pump water boiler system, comprising a steam discharge condenser, a water evaporator, a refrigeration compressor, an evaporator, a booster pump, a water vapor compressor and a steam-water mixer;
the water supply enters from the water inlet of the steam exhaust condenser, the water outlet of the steam exhaust condenser is respectively connected with the water inlet of the water evaporator and the inlet of the steam-water mixer, the water outlet of the water evaporator is connected with the inlet of the steam compressor, the outlet of the steam compressor is connected with the inlet of the steam-water mixer, and the outlet of the steam-water mixer (12) outputs hot water;
the outlet of the refrigeration compressor is connected with the working medium inlet of the water evaporator, the working medium outlet of the water evaporator is connected with the working medium inlet of the steam exhaust condenser, the working medium outlet of the steam exhaust condenser is connected with the inlet of the evaporator, and the working medium outlet of the evaporator is connected with the inlet of the refrigeration compressor.
Further, the evaporator is also connected with an environmental heat source, and the environmental heat source provides a heat source required by evaporation for the evaporator.
Further, the water outlet of the exhaust steam condenser is connected with the inlet of the steam-water mixer through a booster pump.
Further, a second valve is arranged between the booster pump and the inlet of the steam-water mixer.
Further, a first valve is provided between the water outlet of the exhaust condenser and the water inlet of the water evaporator.
Further, a working medium outlet of the exhaust condenser is connected with an inlet of the evaporator through an expansion mechanism.
In the half-cycle heat pump water boiler system:
after the feed water enters the exhaust condenser, the feed water is divided into two paths: one path of the water vapor is depressurized to a set water vapor saturation pressure, absorbs heat in a water evaporator and is vaporized into water vapor, and the water vapor enters a water vapor compressor to be compressed to a saturation pressure corresponding to hot water and then enters a steam-water mixer; the other path of the gas-water mixture enters a steam-water mixer after being boosted; the compressed water vapor and the pressurized water in the steam-water mixer are mixed to reach the saturated hot water with required thermodynamic parameters, so as to form the hot water open (semi) circulation.
And after the working medium from the refrigeration compressor sequentially enters the water evaporator and the exhaust steam condenser to release heat, the working medium enters the evaporator to absorb heat through throttling and cooling, and finally enters the refrigeration compressor again to raise the temperature and raise the pressure to form a complete vapor compression working medium thermodynamic cycle, namely the inverse Rankine cycle.
Further, in the hot water open circulation, a first valve is arranged between the steam exhaust condenser and the water evaporator to realize depressurization, and a booster pump is arranged between the steam exhaust condenser and the steam-water mixer to realize boosting; meanwhile, the flow distribution relation of the water entering the first valve and the booster pump is controlled, namely, the evaporation latent heat of the water in the water evaporator is equal to the heat release amount of the refrigerating working medium, so that the water entering the water evaporator is completely evaporated.
Further, a second valve is provided between the soda mixer and the booster pump so that the water in the pipeline is not lower than the pressure of the hot water.
Compared with the prior art, the utility model has the remarkable advantages that: the thermodynamic cycle of the refrigerating working medium is a complete inverse Rankine cycle, while the cycle of water as the working medium is only an open cycle of evaporation, compression and steam discharge of partial water supply, and can be regarded as a half cycle, so that the whole thermodynamic system of the utility model can be called as a half cycle. The utility model can greatly improve the temperature and efficiency of the heat pump hot water system, save energy and improve the energy utilization rate, can be widely applied to various fields, and is a leap of heat pump technology.
Drawings
Fig. 1 is a system schematic diagram of the present utility model.
Fig. 2 is a pressure enthalpy diagram of the circulation system of the present utility model.
The reference number designation in fig. 1: the system comprises water supply (1), a steam exhaust condenser (2), valves (3, 10), a water evaporator (4), a refrigeration compressor (5), an evaporator (6), an environmental heat source (7), an expansion mechanism (8), a booster pump (9), a steam compressor (11), a steam-water mixer (12) and high-temperature hot water (13);
the reference number designation in fig. 2: 1 '"-refrigerant compressor inlet status point, 2'" -refrigerant compressor outlet status point, 3 '"-condenser outlet status point, 4'" -evaporator inlet status point; 1 '-water supply state point, 2' -steam discharge condenser water outlet state point, 3 '-water evaporator water inlet state point, 4' -water evaporator water outlet state point, 5 '-water compressor outlet state point, 6' -water pump outlet state point, 1 "-water supply state point.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is a schematic diagram of a half-cycle heat pump water boiler system. The working medium from the refrigeration compressor 5 sequentially enters the water evaporator 4 and the exhaust condenser 2 to release heat, the sensible enthalpy and latent enthalpy of exhaust steam are released to the water sides of the water evaporator 4 and the exhaust condenser 2, then the working medium is throttled and cooled by the expansion mechanism 8 and enters the evaporator 6 to absorb the heat of the environmental heat source 7, and finally the working medium enters the inlet of the refrigeration compressor 5 to be compressed, heated and boosted, so that a complete vapor compression refrigeration cycle (inverse Rankine cycle) is completed; wherein the flow distribution relation of the inlet valve 3 and the booster pump 9 is controlled so that the water is completely evaporated in the water evaporator 4, namely the water evaporation latent heat in the water evaporator (4) is equal to the heat release quantity of the refrigerating medium, and the heat exchange quantity of the circulating medium between the water evaporator 4 and the steam exhaust condenser 2 is formed by the working mediumIs determined by the exhaust state and the requirement of high-temperature hot water. Wherein, the water evaporator utilizes the exhaust steam display enthalpy and can fully utilize working mediumAchieve the aim of improving the whole system->Efficiency function.
The water circulation system is as follows:
after the water supply 1 enters the steam exhaust condenser 2, the water supply 1 is divided into two paths, one path is depressurized through a valve 3, and then is generally reduced to the corresponding water vapor saturation pressure of 5 ℃ lower than the condensation temperature of the refrigerating working medium, the depressurized water absorbs heat on the side of the refrigerant in the water evaporator (4) and is vaporized into water vapor, the water vapor enters the water vapor compressor 11 to be compressed to superheated water vapor with the saturation pressure corresponding to the high-temperature hot water 13, meanwhile, the other path of the water supply 1 enters the booster pump 9 to be boosted, and then is regulated to be not lower than the pressure of the hot water 13 through the valve 10, and the boosted water vapor enters the steam-water mixer 12 to be mixed with the boosted water at the other inlet thereof, so that the saturated state hot water 13 with the required thermodynamic parameters is reached, and the hot water open (semi) circulation is formed.
Fig. 2 is a pressure enthalpy diagram of a half-cycle heat pump water boiler system. For complete refrigeration working medium circulation, the working medium reaches the inlet state point 1 'of the refrigeration compressor at the outlet of the evaporator, enters the compressor to compress to reach the outlet state point 2', enters the water evaporator and the exhaust condenser to release heat to reach the outlet state point 3 '(sensible heat part) of the condenser, and then to the two-stage condenser to the condenser outlet state point 3' (latent heat portion), through throttling and depressurization to the evaporator inlet state point 4', and then returns to the inlet state point 1', thus completing a thermodynamic cycle.
For open half water circulation, a water supply state point 1', after absorbing heat, heating to a steam exhaust condenser water outlet state point 2', dividing into two paths, wherein one path is depressurized to a water evaporator water inlet state point 3', after absorbing heat, the water evaporator water outlet state point 4' is changed, and then the water evaporator water outlet state point is compressed by a water vapor compressor, heated and pressurized to an outlet state point 5'; the other path is boosted to an outlet state point 6' by a water pump; the state points 5', 6' exchange heat in the soda mixer to the water supply state point 1".
The thermodynamic cycle of the refrigerating working medium is a complete inverse Rankine cycle, while the cycle of water as the working medium is only an open cycle of evaporation, compression and steam discharge of partial water supply, and can be regarded as a half cycle, so that the whole thermodynamic system can be called as a half cycle.
At the same environmental heat source temperature, the prior art only can continuously and integrally raise the inlet water to 90 ℃ for water supply through similar single-stage or two-stage and three-stage circulating heat pumps, and the total efficiency of the system only can reach about 2.0 and does not reach 2/3 of the system of the utility model.
The above embodiments are only for illustrating the technical idea of the present utility model, and the protection scope of the present utility model is not limited thereto, and any modification made on the basis of the technical scheme according to the technical idea of the present utility model falls within the protection scope of the present utility model.
Claims (6)
1. A half-cycle heat pump water boiler system is characterized in that the system comprises a steam discharge condenser (2), a water evaporator (4), a refrigeration compressor (5), an evaporator (6), a booster pump (9), a water vapor compressor (11) and a steam-water mixer (12);
the water supply (1) enters from a water inlet of the steam exhaust condenser (2), a water outlet of the steam exhaust condenser (2) is respectively connected with a water inlet of the water evaporator (4) and an inlet of the steam-water mixer (12), a water outlet of the water evaporator (4) is connected with an inlet of the steam compressor (11), an outlet of the steam compressor (11) is connected with an inlet of the steam-water mixer (12), and a hot water (13) is output from an outlet of the steam-water mixer (12);
the outlet of the refrigeration compressor (5) is connected with the working medium inlet of the water evaporator (4), the working medium outlet of the water evaporator (4) is connected with the working medium inlet of the steam exhaust condenser (2), the working medium outlet of the steam exhaust condenser (2) is connected with the inlet of the evaporator (6), and the working medium outlet of the evaporator (6) is connected with the inlet of the refrigeration compressor (5).
2. A half-cycle heat pump water boiler system according to claim 1, characterized in that the evaporator (6) is further connected to an ambient heat source (7), the ambient heat source (7) providing the heat source required for evaporation to the evaporator (6).
3. A half-cycle heat pump water boiler system according to claim 1, characterized in that the water outlet of the exhaust condenser (2) is connected to the inlet of the steam-water mixer (12) via a booster pump (9).
4. A half-cycle heat pump water boiler system according to claim 3, characterized in that a second valve (10) is arranged between the booster pump (9) and the inlet of the soda mixer (12).
5. A half-cycle heat pump water boiler system according to claim 1, characterized in that a first valve (3) is arranged between the water outlet of the exhaust condenser (2) and the water inlet of the water evaporator (4).
6. A half-cycle heat pump water boiler system according to claim 1, characterized in that the working medium outlet of the exhaust condenser (2) is connected to the inlet of the evaporator (6) via an expansion mechanism (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321893395.3U CN220567508U (en) | 2023-07-19 | 2023-07-19 | Half-cycle heat pump water boiler system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321893395.3U CN220567508U (en) | 2023-07-19 | 2023-07-19 | Half-cycle heat pump water boiler system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220567508U true CN220567508U (en) | 2024-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321893395.3U Active CN220567508U (en) | 2023-07-19 | 2023-07-19 | Half-cycle heat pump water boiler system |
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| Country | Link |
|---|---|
| CN (1) | CN220567508U (en) |
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2023
- 2023-07-19 CN CN202321893395.3U patent/CN220567508U/en active Active
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