CN211925880U - Heat supply system - Google Patents
Heat supply system Download PDFInfo
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- CN211925880U CN211925880U CN201922151892.6U CN201922151892U CN211925880U CN 211925880 U CN211925880 U CN 211925880U CN 201922151892 U CN201922151892 U CN 201922151892U CN 211925880 U CN211925880 U CN 211925880U
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Abstract
The utility model provides a heating system, including air source heat pump set, water source heat pump set, heat transfer device and terminal heating equipment, air source heat pump set includes first condenser and first evaporimeter, water source heat pump set includes second condenser and second evaporimeter, the first heat transfer medium export of first condenser communicates the first heat transfer medium entry of heat transfer device, the first heat transfer medium export of heat transfer device communicates the first heat transfer medium entry of second evaporimeter, the first heat transfer medium export of second evaporimeter communicates the first heat transfer medium entry of first condenser; a second heat transfer medium outlet of the second condenser is communicated with a second heat transfer medium inlet of the heat exchange device, and a second heat transfer medium outlet of the heat exchange device is communicated with a second heat transfer medium inlet of the second condenser; the heat exchange device provides a heat source for the return water of the tail end heating device, and the requirement of tail end heating equipment on high-temperature water is met. The water source heat pump unit is selectively started according to the return water temperature, so that the energy waste is avoided.
Description
Technical Field
The utility model relates to a heating ventilation air conditioning technology field, concretely relates to heating system.
Background
Air source heat pumps are increasingly used in the heating, ventilating and air conditioning field due to their advantages of energy saving, environmental protection, convenient control, etc. The traditional air source heat pump unit can run safely and reliably under the condition that the outdoor air temperature is higher than-3 ℃. Therefore, the application range of the air source heat pump unit is already expanded from the north of the Yangtze river basin to the yellow river basin, namely, the air source heat pump unit enters a part of areas of a zone II of the climate zone standard. The climate features that the air temperature is low in winter, the average air temperature is-10-0 ℃ in 1 month, but the time of the air temperature higher than-3 ℃ in the heating period is a large proportion, and the time of the air temperature lower than-3 ℃ is more in the night, so that the air source heat pump is selected for buildings (such as office buildings, shopping malls, banks and the like) mainly operated in the daytime in the regions, and the operation is feasible and reliable.
The novel air source heat pump unit can also stably operate when being matched with floor heating for use under the conditions that the outdoor air temperature is lower than-3 ℃ and higher than-30 ℃. When the water heater is matched with a tail end heating device for use, the requirement of higher outlet water temperature cannot be met, and the heating effect cannot be achieved.
Based on this, the prior art still remains to be improved.
SUMMERY OF THE UTILITY MODEL
For defect and not enough when solving prior art cavity air supply heat pump set when terminal heating equipment cooperation use, the utility model provides a heating system, this heating system include air source heat pump set and water source heat pump set, can selectively open water source heat pump set according to terminal heating equipment's return water temperature, form overlapping formula's heating system, provide the heat to the heat transfer medium in the terminal heating equipment simultaneously by air source heat pump set and water source heat pump set, satisfy the demand of terminal heating equipment to high-temperature water, in order to reach anticipated heating effect.
According to the purpose of the utility model, the utility model provides a heating system, which comprises an air source heat pump unit, a water source heat pump unit, a heat exchange device and a terminal heating device, wherein, the air source heat pump unit comprises a first condenser and a first evaporator, the water source heat pump unit comprises a second condenser and a second evaporator,
the first heat transfer medium outlet of the first condenser is communicated with the first heat transfer medium inlet of the heat exchange device, the first heat transfer medium outlet of the heat exchange device is communicated with the first heat transfer medium inlet of the second evaporator, and the first heat transfer medium outlet of the second evaporator is communicated with the first heat transfer medium inlet of the first condenser;
a second heat transfer medium outlet of the second condenser is communicated with a second heat transfer medium inlet of the heat exchange device, and a second heat transfer medium outlet of the heat exchange device is communicated with a second heat transfer medium inlet of the second condenser;
the heat exchange device is a heat source for the return water of the tail end heating device.
Optionally, the first heat transfer medium and the second heat transfer medium are both water.
Optionally, a first circulating water pump is further arranged in the water return pipeline of the tail-end heating device.
Optionally, a second circulating water pump is further disposed between the first heat transfer medium inlet of the first condenser and the first heat transfer medium outlet of the second evaporator.
Optionally, the heating system further comprises a temperature detection device and a controller in communication connection with the temperature detection device,
the temperature detection device is arranged in a water return pipeline of the tail-end heating equipment to detect the temperature of the return water in the water return pipeline and transmit the monitored temperature of the return water to the controller.
Optionally, the water source heat pump unit comprises a start/stop device, the start/stop device is in communication with the controller, and the controller is configured to start or stop the water source heat pump unit through the start/stop device according to the temperature of the return water detected by the temperature detection device.
Optionally, the controller is configured to:
when the temperature of the return water is lower than the preset temperature within the preset time, the second starting device is started to start the water source heat pump unit;
and when the temperature of the return water is higher than the preset temperature within the preset time, closing the second starting device to stop the water source heat pump unit.
Optionally, the predetermined time is 3-10 minutes.
Optionally, the predetermined temperature is 75-85 ℃.
Optionally, the water source heat pump unit comprises a screw water source heat pump unit.
The utility model discloses an above-mentioned heating system includes air source heat pump set and water source heat pump set, and this air source heat pump set and water source heat pump set can provide high temperature hot water for terminal heating equipment simultaneously for heat transfer medium in the terminal heating equipment can reach higher temperature, satisfies the demand of terminal heating equipment to high temperature water.
The utility model discloses a heating system still includes temperature-detecting device and controller, and temperature-detecting device detects terminal heating equipment's return water temperature, and water source heat pump set is selectively opened according to this return water temperature to the controller, when satisfying terminal heating equipment to the demand of high-temperature water like this, can not cause the waste of the energy.
The utility model discloses use air source heat pump set and water source heat pump set heat supply simultaneously to give first place to, the heat transfer medium who flows from the heat transfer medium export of air source heat pump set condenser gets into the heat source as the water source heat pump set evaporimeter, this system make full use of the convenient and fast's of air source heat pump characteristics and the characteristics of the high evaporating temperature of water source heat pump and high condensing temperature, realize air source heat pump set and the heat supply of water source heat pump set cascade, the efficiency of lift system.
In addition, by utilizing the distributed characteristics of the air source heat pump unit and the water source heat pump unit, the whole heat supply system can be integrally designed and distributed according to the characteristics of the buildings, and the applicability is strong.
Drawings
Fig. 1 shows a functional block diagram of a heating system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments.
In the following embodiments of the present invention, words indicating orientations, such as "upper", "lower", "left", "right", "horizontal", "vertical", etc., are referred to only to enable those skilled in the art to better understand the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1, a schematic diagram of functional modules of the heating system of the present invention is schematically shown. The utility model discloses a heating system includes air source heat pump set 100, water source heat pump set 200, heat transfer device and terminal heating equipment. The air source heat pump unit 100 includes a first evaporator and a first condenser, and the water source heat pump unit 200 includes a second evaporator and a second condenser. As shown in fig. 1, the first heat transfer medium inlet 101 of the first condenser is communicated with the first heat transfer medium outlet 201 of the second evaporator, the first heat transfer medium outlet 102 of the first condenser is communicated with the first heat transfer medium inlet of the heat exchange device, and the first heat transfer medium outlet of the heat exchange device is communicated with the heat transfer medium inlet 202 of the second evaporator.
In the present embodiment, the first heat transfer medium and the second heat transfer medium are both water. As will be appreciated, the air source heat pump unit may further include a compressor, the first evaporator absorbs a large amount of low temperature heat energy in the air to evaporate a heat transfer working medium, such as a refrigerant, the pressure and temperature of the refrigerant increase after being compressed by the compressor to form high temperature steam, and the high temperature steam condenses into liquid in the first condenser and releases a large amount of heat to be transferred to water at the first condenser end. In a preferred embodiment, the first condenser may be a loop cooler, which is connected to a water tank (not specifically shown) of the air source heat pump unit, the heat released by the high temperature steam when condensed into liquid in the first cooler heats the water in the water tank, and the condensed refrigerant returns to the first evaporator end to enter the next cycle.
The water heated at the first condenser end of the air source heat pump unit enters the heat exchange device from the first heat transfer medium inlet of the heat exchange device to exchange heat with cold water (return water) from a return water pipeline of the tail-end heating equipment, and the hot water after heat exchange enters a water supply pipeline of the tail-end heating equipment to be heated. And the cold water after heat exchange enters the second evaporator of the water source heat pump unit 200 from the first heat transfer medium outlet of the heat exchange device through the heat transfer medium inlet 202 of the second evaporator as the heat source of the second evaporator. The cold water flowing out of the first heat transfer medium outlet 201 of the second evaporator flows back to the first condenser end of the air source heat pump unit 100 again, and enters the next cycle. In order to ensure that the cold water flowing out of the second evaporator can smoothly flow back to the first condenser end of the air source heat pump unit, a second circulating pump 500 is arranged in a pipeline between the first heat transfer medium outlet of the second evaporator and the first heat transfer medium inlet of the first condenser so as to provide power for the cold water flowing out of the second evaporator to flow back.
As described above, a first heat transfer medium circulation is formed between the first condenser, the heat exchange device and the second evaporator, and the air source heat pump unit 100, the heat exchange device and the second circulating water pump constitute the first heat supply channel of the heat supply system.
As described above, the second evaporator of the water source heat pump unit 200 uses the cold water returned to the first condenser as a heat source, absorbs heat of the cold water to evaporate a refrigerant therein, the refrigerant is compressed by the compressor to form high-temperature steam, the high-temperature steam enters the second condenser, in a preferred embodiment, the second condenser may also be a loop condenser, when the high-temperature steam is condensed into liquid in the second condenser, a large amount of heat is released, so that water in the second condenser is heated, hot water from the second condenser enters the heat exchange device through the second heat transfer medium inlet of the heat exchange device and exchanges heat with cold water from the return water pipe of the terminal heating device, and the heated hot water in the terminal heating device after heat exchange enters the water supply pipe of the terminal heating device through the water inlet pipe of the terminal heating device for heating. And the cold water (second heat transfer medium) after the heat is released from the heat exchange device flows back from the second heat transfer medium outlet of the heat exchange device to the second condenser through the second heat transfer medium inlet of the second condenser and enters the next circulation.
In a preferred embodiment, in order to enable cold water in the return pipe of the end heating equipment to smoothly enter the heat exchanger for heat exchange, a first circulating water pump 400 is provided in the return pipe of the end heating equipment to provide power for returning the cold water in the return pipe of the end heating equipment.
As described above, the second condenser and the heat exchanger form the circulation of the second heat transfer medium, the heat exchanger and the terminal heating device form the circulation of heating hot water therebetween, and from this, the water source heat pump unit 200, the heat exchanger, the first circulating water pump and the terminal heating device constitute the utility model discloses a heating system's second group heat supply passage.
When air source heat pump set and water source heat pump set opened simultaneously, first heat supply passageway and the cooperation of second heat supply passageway provide heat transfer medium (for example this embodiment water) for terminal heating equipment water supply pipe's water reaches higher temperature, realizes ideal heating effect.
In this embodiment, both the air source heat pump unit and the water source heat pump unit may adopt heat pump units commonly used in the art, for example, the water source heat pump unit may adopt a screw type water source heat pump unit, and the air source heat pump unit includes components or assemblies of the air source heat pump unit commonly used in the art such as a throttling device in addition to the first condenser, the first evaporator and the compressor.
In addition, in the embodiment, the heat exchanging device is separately shown, and as can be understood by those skilled in the art, the heat exchanging device may be integrated in the second condenser to form an integral structure with the second condenser, and exchanges heat with the end heating device in the form of the second condenser.
As shown in fig. 1, in a preferred embodiment of the present embodiment, the heating system further includes a temperature detection device 300 disposed in the water return pipe of the end heating apparatus to detect the temperature of the return water in the water return pipe, for example, the temperature of the return water in the water return pipe of the end heating apparatus according to the present embodiment, and a controller (not shown in detail) in communication with the temperature detection device, and transmits the detected temperature to the controller. The controller controls the start or stop of the water source heat pump unit according to the detected temperature.
In a preferred embodiment, the water source heat pump unit 200 further comprises an activation/deactivation device, which is in communication with the controller, and the controller can activate or deactivate the water source heat pump unit through the activation/deactivation device according to the temperature of the return water in the return water pipe of the end heating equipment detected by the temperature detection device. For example, when the temperature of the return water in the return water pipeline of the tail-end heating equipment is continuously lower than a certain temperature within a certain time, for example, continuously lower than 75-85 ℃ within 3-10 min, the controller starts the water source heat pump unit 200 through the starting/stopping device, so that the first heat supply channel and the second heat supply channel simultaneously provide high-temperature water for the tail-end heating equipment; on the contrary, when the temperature of the return water in the return water pipeline of the tail-end heating equipment is continuously higher than a certain temperature within a certain time, for example, higher than 75-85 ℃ within 3-10 min, the controller disables the water source heat pump unit through the start/stop device, and the first heat supply channel provides high-temperature water for the tail-end heating equipment.
In a more preferred embodiment, when the temperature of the return water in the return water pipe of the end heating equipment is continuously lower than a certain temperature for a certain time, for example, continuously lower than 80 ℃ for 5min, the controller starts the water source heat pump unit 200 through the start/stop device, so that the first heat supply channel and the second heat supply channel simultaneously provide high-temperature water for the end heating equipment; on the contrary, when the temperature of the return water in the return water pipeline of the tail end heating equipment is continuously higher than a certain temperature for a certain time, for example, higher than 80 ℃ for 5min, the controller deactivates the water source heat pump unit through the start/stop device, and the high-temperature water is provided for the tail end heating equipment through the first heat supply channel.
The heating system of this embodiment can selectively open water source heat pump set according to the temperature of the return water in the return water pipeline of terminal heating equipment, like this when satisfying terminal heating equipment to the demand of high-temperature water all the time, can not cause the waste of the energy.
To sum up, the utility model discloses an above-mentioned heating system includes air source heat pump set and water source heat pump set, and this air source heat pump set and water source heat pump set can provide high temperature hot water for terminal heating equipment simultaneously for heat transfer medium in the terminal heating equipment can reach higher temperature, satisfies the demand of terminal heating equipment to high temperature water.
The utility model discloses a heating system still includes temperature-detecting device and controller, and temperature-detecting device detects terminal heating equipment's return water temperature, and water source heat pump set is selectively opened according to this return water temperature to the controller, when satisfying terminal heating equipment to the demand of high-temperature water like this, can not cause the waste of the energy.
The utility model discloses use air source heat pump set and water source heat pump set heat supply simultaneously to give first place to, the heat transfer medium who flows from the heat transfer medium export of air source heat pump set condenser gets into the heat source as the water source heat pump set evaporimeter, this system make full use of the convenient and fast's of air source heat pump characteristics and the characteristics of the high evaporating temperature of water source heat pump and high condensing temperature, realize air source heat pump set and the heat supply of water source heat pump set cascade, the efficiency of lift system.
In addition, by utilizing the distributed characteristics of the air source heat pump unit and the water source heat pump unit, the whole heat supply system can be integrally designed and distributed according to the characteristics of the buildings, and the applicability is strong.
Claims (7)
1. A heating system is characterized by comprising an air source heat pump unit, a water source heat pump unit, a heat exchange device and a tail end heating device, wherein the air source heat pump unit comprises a first condenser and a first evaporator, the water source heat pump unit comprises a second condenser and a second evaporator,
a first heat transfer medium outlet of the first condenser is communicated with a first heat transfer medium inlet of the heat exchange device, the first heat transfer medium outlet of the heat exchange device is communicated with a first heat transfer medium inlet of the second evaporator, and a first heat transfer medium outlet of the second evaporator is communicated with a first heat transfer medium inlet of the first condenser;
a second heat transfer medium outlet of the second condenser is communicated with a second heat transfer medium inlet of the heat exchange device, and a second heat transfer medium outlet of the heat exchange device is communicated with a second heat transfer medium inlet of the second condenser;
the heat exchange device is a heat source for the return water of the tail end heating device.
2. A heating system according to claim 1, wherein both the first heat transfer medium and the second heat transfer medium are water.
3. The heating system according to claim 1, wherein a first circulating water pump is further provided in the return pipe of the end heating apparatus.
4. The heating system according to claim 1, wherein a second circulating water pump is further provided between the first heat transfer medium inlet of the first condenser and the first heat transfer medium outlet of the second evaporator.
5. The heating system according to claim 1, further comprising a temperature detection device and a controller communicatively connected to the temperature detection device,
the temperature detection device is arranged in a water return pipeline of the tail-end heating equipment to detect the temperature of the return water in the water return pipeline and transmit the monitored temperature of the return water to the controller.
6. The heating system according to claim 5, wherein the waterhead heat pump unit comprises an activation/deactivation device, the activation/deactivation device is in communication with the controller, and the controller is configured to activate or deactivate the waterhead heat pump unit through the activation/deactivation device according to the temperature of the return water detected by the temperature detection device.
7. A heating system according to claim 1, wherein the water source heat pump unit comprises a screw water source heat pump unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922151892.6U CN211925880U (en) | 2019-12-04 | 2019-12-04 | Heat supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922151892.6U CN211925880U (en) | 2019-12-04 | 2019-12-04 | Heat supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211925880U true CN211925880U (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922151892.6U Active CN211925880U (en) | 2019-12-04 | 2019-12-04 | Heat supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211925880U (en) |
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2019
- 2019-12-04 CN CN201922151892.6U patent/CN211925880U/en active Active
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