CN211233376U - Carbon dioxide direct-current variable-frequency heat pump water heater - Google Patents
Carbon dioxide direct-current variable-frequency heat pump water heater Download PDFInfo
- Publication number
- CN211233376U CN211233376U CN201921779765.4U CN201921779765U CN211233376U CN 211233376 U CN211233376 U CN 211233376U CN 201921779765 U CN201921779765 U CN 201921779765U CN 211233376 U CN211233376 U CN 211233376U
- Authority
- CN
- China
- Prior art keywords
- water
- heat exchange
- heat
- frequency
- carbon dioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model discloses a carbon dioxide direct-current variable-frequency heat pump water heater, which comprises a direct-current variable-frequency compressor, an air cooler with a first heat exchange pipeline and a heat exchange water path which exchange heat mutually in the inner part, a heat regenerator with a second heat exchange pipeline and a third heat exchange pipeline which exchange heat mutually in the inner part, an expansion valve, an evaporator, the direct-current variable-frequency compressor, the first heat exchange pipeline, the second heat exchange pipeline, the expansion valve, the evaporator and the third heat exchange pipeline are sequentially communicated through a refrigerant pipeline to form a loop for circulating a carbon dioxide refrigerant, the heat exchange water path is provided with a water inlet and a water outlet, the heat exchange water path is provided with a variable-frequency water pump at the water inlet, the variable-frequency water pump can set the temperature according to the water outlet to adjust the water flow in the heat exchange water path, the direct-current variable-frequency compressor can, the water heater can work in a low-temperature environment and always provide hot water with rated outlet water temperature.
Description
Technical Field
The utility model relates to a carbon dioxide heat pump water heater technical field, in particular to carbon dioxide direct current frequency conversion heat pump water heater.
Background
The carbon dioxide heat pump water heater adopts carbon dioxide as a refrigerant, the heat release of the carbon dioxide is supercritical circulation, the thermophysical property of the carbon dioxide is utilized, the exhaust temperature of a compressor is high, the energy efficiency is high, and the carbon dioxide heat pump water heater is widely applied to various heating systems and hot water engineering. The carbon dioxide heat pump water heater generally includes a compressor, an air cooler, an expansion valve, and an evaporator connected in sequence through a refrigerant pipeline, where the refrigerant pipeline exchanges heat with a heat exchange water path of a user terminal at the air cooler side, so as to supply hot water to the user terminal. The single-stage carbon dioxide heat pump water heater can normally work at about minus 25 ℃, and has the characteristic of high primary outlet water temperature which is as high as 90 ℃. However, the existing carbon dioxide heat pump water heater generally adopts a fixed-frequency compressor, when the ambient temperature is lower than-25 ℃, the heating performance of the single-stage carbon dioxide heat pump water heater is easy to be reduced, the heat supply amount cannot meet the requirement of the set temperature of the outlet water, and even the single-stage carbon dioxide heat pump water heater cannot work normally; in addition, once the water flow in the heat exchange water path of the user side is changed, for example, the water flow is increased, the heat exchange water path needs to absorb more heat to meet the set outlet water temperature requirement, if the water flow is reduced, the outlet water temperature of the heat exchange water path of the user side is easy to exceed the set outlet water temperature due to the fact that the compressor cannot work in a frequency reduction mode, and the user cannot use the heat exchange water path conveniently.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a can adapt to work under the low temperature environment, provide rated outlet water temperature's hydrothermal carbon dioxide direct current frequency conversion heat pump water heater throughout.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:
a carbon dioxide direct current variable frequency heat pump water heater comprises:
a direct current variable frequency compressor;
the air cooler is internally provided with a first heat exchange pipeline and a heat exchange water path which exchange heat with each other;
the heat regenerator is internally provided with a second heat exchange pipeline and a third heat exchange pipeline which exchange heat with each other;
an expansion valve;
an evaporator;
the direct-current variable-frequency compressor, the first heat exchange pipeline, the second heat exchange pipeline, the expansion valve, the evaporator and the third heat exchange pipeline are sequentially communicated through a refrigerant pipeline to form a loop for circulating a carbon dioxide refrigerant;
the heat transfer water route have a water inlet and a delivery port, the heat transfer water route be in water inlet department be provided with a frequency conversion water pump, the frequency conversion water pump can be based on the delivery port set for the temperature in order to adjust the water flow size in the heat transfer water route, direct current frequency conversion compressor can be based on the delivery port set for the temperature in order to adjust its frequency of operation.
In the above technical solution, it is preferable that the air conditioner further includes an oil separator, and the oil separator is located in the circuit and is disposed between the dc inverter compressor and the air cooler.
In the above technical solution, preferably, the heat exchanger further comprises a gas-liquid separator, and the gas-liquid separator is located in the loop and is arranged between the direct current variable frequency compressor and the third heat exchange pipeline.
In the above technical solution, preferably, the expansion valve is an electronic expansion valve.
The utility model discloses a set up direct current frequency conversion compressor and frequency conversion water pump, direct current frequency conversion compressor can set for the temperature according to heat transfer water route delivery port and adjust its operating frequency to reach the optimal output state, can adapt to work under the low temperature environment; the frequency conversion water pump can set the temperature according to heat transfer water route delivery port and adjust the discharge size in the heat transfer water route, convenience of customers' use, and the carbon dioxide heat pump water heater of present case can adapt to work under the low temperature environment, provide the hot water of rated outlet water temperature all the time.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
wherein: 11. a direct current variable frequency compressor; 12. an air cooler; 121. a first heat exchange conduit; 122. a heat exchange waterway; 123. a water inlet; 124. a water outlet; 125. a variable frequency water pump; 13. a heat regenerator; 131. a second heat exchange conduit; 132. a third heat exchange conduit; 14. an expansion valve; 15. an evaporator; 16. a refrigerant line; 17. an oil separator; 18. a gas-liquid separator.
Detailed Description
To explain the technical content, structural features, achieved objects and functions of the present invention in detail, the following detailed description is made with reference to the accompanying drawings.
As shown in fig. 1, the carbon dioxide dc frequency conversion heat pump water heater includes a dc frequency conversion compressor 11, an air cooler 12, a heat regenerator 13, an expansion valve 14, and an evaporator 15. The air cooler 12 has a first heat exchange pipe 121 and a heat exchange water path 122 therein for exchanging heat with each other. Regenerator 13 has inside a second heat exchange tube 131 and a third heat exchange tube 132 that exchange heat with each other. The direct-current variable-frequency compressor 11, the first heat exchange pipeline 121, the second heat exchange pipeline 131, the expansion valve 14, the evaporator 15 and the third heat exchange pipeline 132 are sequentially communicated with each other through a refrigerant pipeline 16 to form a loop for circulating a carbon dioxide refrigerant.
The specific working principle is that the carbon dioxide refrigerant is compressed by the direct current frequency conversion compressor 11 to work and then is changed into high-temperature and high-pressure gas, and then enters the first heat exchange pipe 121 of the air cooler 12, exchanges heat with the user side heat exchange water path 122 through the first heat exchange pipe 121, and transfers most of the heat carried by the water to the heat exchange water path 122, thereby providing the user with the required hot water, then, the heat-exchanged carbon dioxide refrigerant sequentially passes through the second heat-exchange pipe 131 of the heat regenerator 13 and the expansion valve 14 and enters the evaporator 15, heat exchange is performed with the external environment through the evaporator 15, so that heat in the external environment is absorbed, and then enters the third heat exchange pipeline 132 of the heat regenerator 13, exchanges heat with the second heat exchange pipeline 131 through the third heat exchange pipeline 132, absorbs heat again, heats up, and finally returns to the direct-current variable-frequency compressor 11, so that the circulation of the carbon dioxide refrigerant is completed.
In addition, during the compression work of the compressor, a small part of lubricating oil is mixed into the carbon dioxide refrigerant, in order to play a role of filtering the lubricating oil, an oil separator 17 is arranged in the loop, the oil separator 17 is arranged between the direct current frequency conversion compressor 11 and the air cooler 12, the role of separating the lubricating oil and the carbon dioxide refrigerant is to return the lubricating oil into the direct current frequency conversion compressor 11, and the separated lubricating oil participates in the lubricating work of the internal components of the compressor again. In order to filter impurities, a gas-liquid separator 18 is further arranged in the loop, the gas-liquid separator 18 is arranged between the direct current variable frequency compressor 11 and the regenerator 13, one end of the gas-liquid separator 18 is communicated with an air inlet of the direct current variable frequency compressor 11, and the other end of the gas-liquid separator 18 is communicated with a third heat exchange pipeline 132 of the regenerator 13. The expansion valve is an electronic expansion valve.
The heat exchange water path 122 has a water inlet 123 and a water outlet 124, the heat exchange water path 122 is provided with a variable frequency water pump 125 at the water inlet 123, and the variable frequency water pump 125 can adjust the water flow in the heat exchange water path 122 according to the set temperature of the water outlet 124. The dc inverter compressor 11 can adjust its operating frequency according to the set temperature of the water outlet 124.
Specifically, when the heat pump water heater works in a low temperature environment, especially at an ambient temperature of-25 ℃ to-30 ℃, the dc variable frequency compressor 11 can increase the working frequency, increase the output power, and improve the heating performance thereof according to the set temperature of the water outlet 124 of the heat exchange water path 122, thereby meeting the heat demand of the heat exchange water path 122 at the user side, and at the same time, the variable frequency water pump 125 reduces the water flow in the heat exchange water path 122 according to the set temperature of the water outlet 124, thereby absorbing more heat, and increasing the water temperature, so as to reach the set temperature of the water outlet 124. When the temperature of the external environment is high, the dc variable frequency compressor 11 can reduce the operating frequency thereof and reduce the output power according to the set temperature of the water outlet 124 of the heat exchange water path 122, on the premise of satisfying the heat demand of the user side heat exchange water path 122, reduce the energy consumption, and at the same time, the variable frequency water pump 125 increases the water flow in the heat exchange water path 122 according to the set temperature of the water outlet 124, so as to reduce the absorbed heat as a whole, thereby reducing the water temperature and achieving the set temperature of the water outlet 124. In conclusion, the carbon dioxide direct-current variable-frequency heat pump water heater can always provide hot water with rated outlet water temperature and can adapt to work in a low-temperature environment.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (4)
1. The utility model provides a carbon dioxide direct current frequency conversion heat pump water heater which characterized in that includes:
a DC variable frequency compressor (11);
the air cooler (12) is internally provided with a first heat exchange pipeline (121) and a heat exchange water path (122) which exchange heat with each other;
the regenerator (13) is internally provided with a second heat exchange pipeline (131) and a third heat exchange pipeline (132) which exchange heat with each other;
an expansion valve (14);
an evaporator (15);
the direct-current variable-frequency compressor (11), the first heat exchange pipeline (121), the second heat exchange pipeline (131), the expansion valve (14), the evaporator (15) and the third heat exchange pipeline (132) are sequentially communicated through a refrigerant pipeline (16) to form a loop for circulating carbon dioxide refrigerant;
the heat exchange water channel (122) is provided with a water inlet (123) and a water outlet (124), the heat exchange water channel (122) is provided with a variable frequency water pump (125) at the water inlet (123), the variable frequency water pump (125) can set temperature according to the water outlet (124) to adjust the water flow in the heat exchange water channel (122), and the direct current variable frequency compressor (11) can set temperature according to the water outlet (124) to adjust the working frequency of the direct current variable frequency compressor.
2. The carbon dioxide direct-current variable-frequency heat pump water heater according to claim 1, characterized in that: the oil separator (17) is positioned in the circuit and is arranged between the direct current frequency conversion compressor (11) and the air cooler (12).
3. The carbon dioxide direct-current variable-frequency heat pump water heater according to claim 1, characterized in that: the system also comprises a gas-liquid separator (18), wherein the gas-liquid separator (18) is positioned in the loop and is arranged between the direct current variable frequency compressor (11) and the third heat exchange pipeline (132).
4. The carbon dioxide direct-current variable-frequency heat pump water heater according to claim 1, characterized in that: the expansion valve (14) is an electronic expansion valve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921000338 | 2019-06-28 | ||
| CN2019210003381 | 2019-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211233376U true CN211233376U (en) | 2020-08-11 |
Family
ID=71920602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921779765.4U Active CN211233376U (en) | 2019-06-28 | 2019-10-22 | Carbon dioxide direct-current variable-frequency heat pump water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211233376U (en) |
-
2019
- 2019-10-22 CN CN201921779765.4U patent/CN211233376U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106322812A (en) | Cold-and-hot water unit | |
| CN210569370U (en) | Low-temperature frequency conversion air source heat pump unit | |
| CN214406551U (en) | Building distributed energy supply system based on hydrogen fuel cell | |
| CN108954821A (en) | A kind of open type heat pump hot water preparation method of air circulation | |
| CN211233445U (en) | Direct-current variable-frequency carbon dioxide heat pump cold and hot unit | |
| CN211233376U (en) | Carbon dioxide direct-current variable-frequency heat pump water heater | |
| CN211233431U (en) | Direct-current variable-frequency air-supplementing enthalpy-increasing carbon dioxide heat pump unit | |
| CN111076421A (en) | Direct current frequency conversion overlapping hot water unit | |
| CN203848548U (en) | Multipurpose air source heat pump unit | |
| CN211233446U (en) | Direct-current frequency conversion overlapping carbon dioxide heat pump unit | |
| CN203837330U (en) | CO2 heat pump heat exchange enthalpy increase device | |
| CN108730763A (en) | Open type heat pump hot water apparatus based on air circulation | |
| CN114076423A (en) | CO (carbon monoxide)2Transcritical cold-hot coupling combined supply system and regulation and control method | |
| CN210624993U (en) | Ultra-low temperature frequency conversion two-combined-supply unit with refrigerant cooling function | |
| CN201074907Y (en) | High-efficiency air source heat pump water heater | |
| CN211451451U (en) | Air source heat pump system combined with photovoltaic system | |
| CN210399646U (en) | Domestic refrigerator with introduced natural cold source | |
| CN208652140U (en) | Open type heat pump hot water apparatus based on air circulation | |
| CN203323448U (en) | Coolant multi-branch-circuit total heat recovery air conditioning unit | |
| CN108088110B (en) | Secondary throttling middle incomplete cooling heat pump system | |
| CN201803523U (en) | Full heat recovery five-mode heat pump device | |
| CN208566195U (en) | Open type heat pump hot water apparatus based on air circulation | |
| CN201074906Y (en) | High-efficiency air source heat pump water heater being suitable for broad temperature surroundings | |
| CN217031650U (en) | Compressed air conditioning system | |
| CN110645736A (en) | Direct-current variable-frequency carbon dioxide heat pump cold and hot unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20200908 Granted publication date: 20200811 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210311 Granted publication date: 20200811 |