CN113720041A - Heat pump unit and energy-saving heat pump system - Google Patents
Heat pump unit and energy-saving heat pump system Download PDFInfo
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- CN113720041A CN113720041A CN202110904010.8A CN202110904010A CN113720041A CN 113720041 A CN113720041 A CN 113720041A CN 202110904010 A CN202110904010 A CN 202110904010A CN 113720041 A CN113720041 A CN 113720041A
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- heat pump
- acquisition device
- evaporator
- pipeline
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention provides a heat pump unit and an energy-saving heat pump system, relates to the technical field of heat pumps, and aims to solve the technical problems that the energy efficiency ratio of the heat pump unit is low, the manufacturing cost is high, the working condition is strict and the failure rate is high due to limited compression ratio of a compressor and more energy loss in the process of converting electric energy into mechanical energy and then converting the mechanical energy into heat energy when a traditional heat pump works. The device comprises a condenser, an evaporator, a first pipeline and a second pipeline, wherein the condenser, the first pipeline, the evaporator and the second pipeline are sequentially connected into a circulation loop, and a refrigerant is arranged in the circulation loop; the first pipeline is provided with a cut-off device; the second pipeline is sequentially provided with the quantitative supercharging device and the heating device, and the quantitative supercharging device is positioned between the evaporator and the heating device.
Description
Technical Field
The invention relates to the technical field of heat pumps, in particular to a heat pump unit and an energy-saving heat pump system.
Background
The traditional heat pump comprises four parts of a compressor, a condenser, an evaporator and a cut-off device, and the technical route of the traditional heat pump is that electric energy is converted into mechanical energy to change the volume (compression) of fluorine gas so as to generate high-temperature and high-pressure fluorine gas, and the process is finished by the compressor.
The applicant has found that the prior art has at least the following technical problems:
1. when the heat pump unit works, in the process of converting electric energy into mechanical energy and then converting the mechanical energy into heat energy, the compression ratio of the compressor is limited, the exhaust temperature of the compressor is limited, and energy loss is high, so that the energy efficiency ratio of the heat pump unit is low;
2. at present, the compressor of the heat pump system has high manufacturing cost, strict working condition and high failure rate.
Disclosure of Invention
The invention aims to provide a heat pump unit and an energy-saving heat pump system, and aims to solve the technical problems that in the prior art, the compression ratio of a compressor is limited, the exhaust temperature of the compressor is limited, the energy loss is high, the energy efficiency ratio of the heat pump unit is low, the manufacturing cost is high, the working condition is strict, and the failure rate is high in the process of converting electric energy into mechanical energy and then converting the mechanical energy into heat energy when a traditional heat pump works. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a heat pump unit, which comprises a condenser, an evaporator, a first pipeline and a second pipeline, wherein:
the condenser, the first pipeline, the evaporator and the second pipeline are sequentially connected to form a circulation loop, and a refrigerant is arranged in the circulation loop;
the first pipeline is provided with a cut-off device;
the second pipeline is sequentially provided with a quantitative supercharging device and a heating device, and the quantitative supercharging device is positioned between the evaporator and the heating device.
Preferably, the heating device adopts a direct-heating type temperature-increasing supercharger.
Preferably, the operation energy of the heating device is one or more of electric energy, combustion heat energy and solar energy, and the heat transfer mode of the heating device is thermal radiation or thermal conduction.
Preferably, a check valve and a constant pressure valve are further arranged on the second pipeline, wherein:
the check valve is arranged between the evaporator and the quantitative supercharging device;
the constant pressure valve is arranged between the heating device and the condenser.
Preferably, still include control system and with intelligent terminal that control system is connected, wherein:
a first temperature acquisition device is arranged at an outlet of the evaporator, a second temperature acquisition device is arranged at a liquid outlet end of the condenser, a third temperature acquisition device is arranged at an outlet of the heating device, and the first temperature acquisition device, the second temperature acquisition device and the third temperature acquisition device are all connected with the control system;
the condenser, the heating device and the evaporator are all connected with the control system.
Preferably, a first pressure acquisition device and a second pressure acquisition device are further included, wherein:
the first pressure acquisition device is arranged at the outlet of the evaporator, the second pressure acquisition device is arranged at the outlet of the heating device, and the first pressure acquisition device and the second pressure acquisition device are connected with the control system.
Preferably, the first temperature acquisition device, the second temperature acquisition device and the third temperature acquisition device all adopt temperature sensors;
the first pressure acquisition device and the second pressure acquisition device both adopt pressure sensors.
Preferably, the evaporator further comprises a flow collecting device, the flow collecting device is connected with the control system, and the flow collecting device is arranged at an outlet of the evaporator and used for collecting the refrigerant flow at the outlet of the evaporator.
Preferably, the flow acquisition device adopts a flow sensor.
An energy-saving heat pump system comprises the heat pump unit.
The invention provides a heat pump unit and an energy-saving heat pump system, which are sequentially connected into a circulating loop through a condenser, a first pipeline, an evaporator and a second pipeline, wherein a refrigerant is arranged in the circulating loop, a cut-off device is arranged on the first pipeline and is used for effectively cutting off the refrigerant entering the evaporator from the condenser, a quantitative supercharging device and a heating device are sequentially arranged on the second pipeline, and the quantitative supercharging device is positioned between the evaporator and the heating device. The direct-heating heat pump is adopted, the refrigerant gas is directly heated by the heating device to generate high-temperature high-pressure gas, the exhaust temperature is improved, the compressor is not arranged, the energy loss in the process of converting electric energy into mechanical energy and then converting the mechanical energy into heat energy is saved, the COP value of the heat pump unit is further improved, and meanwhile, the compressor is omitted, so that the manufacturing cost can be reduced, the failure rate is reduced, and the maintenance cost of the heat pump system is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of a heat pump unit according to the present invention;
FIG. 2 is a control flow chart of the heat pump unit of the present invention.
In the figure: 1. a condenser; 2. an evaporator; 3. a flow cut-off device; 4. a quantitative supercharging device; 5. a heating device; 6. a check valve; 7. a constant pressure valve; 10. a first pipeline; 20. a second pipeline; 100. a control system; 200. an intelligent terminal; 101. a first temperature acquisition device; 102. a second temperature acquisition device; 103. a third temperature acquisition device; 201. a first pressure acquisition device; 202. a second pressure acquisition device; 301. a flow collection device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The invention provides a heat pump unit, and fig. 1 is a schematic structural diagram of the embodiment, and as shown in fig. 1, the heat pump unit comprises a condenser 1, an evaporator 2, a first pipeline 10 and a second pipeline 20.
The condenser 1, the first pipeline 10, the evaporator 2 and the second pipeline 20 are sequentially connected to form a circulation loop, a refrigerant is arranged in the circulation loop, the refrigerant in the embodiment adopts Freon, other refrigerants can be selected according to actual use conditions during actual use, and the refrigerant which is non-toxic, environment-friendly, strong in stability and high in evaporation latent heat is preferably selected for use;
the first pipe 10 is provided with a shut-off device 3 for effectively shutting off the refrigerant introduced from the condenser 1 into the evaporator 2. In this embodiment, the shutoff device 3 employs a shutoff valve, and the shutoff valve can reasonably distribute the refrigerant to the evaporator 2, so that the evaporator 2 is in a normal working state.
The second pipeline 20 is sequentially provided with a quantitative supercharging device 4 and a heating device 5, the quantitative supercharging device 4 is positioned between the evaporator 2 and the heating device 5, wherein the heating device 5 adopts a direct-heating type warming supercharger, and the quantitative supercharging device 4 adopts a quantitative booster pump for quantifying the high pressure (P) coming out of the evaporator 22) Refrigerant gas.
From the ideal gas state equation P1V1/T1＝P2V2/T2Under the condition of same volume, P can be obtained1/T1＝P2/T2。P1、T1The pressure and temperature of the refrigerant gas after heat absorption by the evaporator are known. So as to obtain P2＝cT2I.e. P2∝T2。
The heat pump set works in Carnot circulation, and the refrigerant gas absorbed by the evaporator 2 is heated by the heating device 5 to ensure that T is heated1To reach T2Thereby generating a high temperature (T)2) High voltage (P)2) Refrigerant gas. In the process, the refrigerant gas absorbs heat (Q ═ cm delta t) and obviously energy is increased.
The heat pump unit adopts a directly-heated heat pump, the refrigerant gas is directly heated by the heating device 5 to generate high-temperature high-pressure gas, the exhaust temperature is improved, the energy loss in the process of converting electric energy into mechanical energy and then converting the mechanical energy into heat energy is saved due to the absence of a compressor, the COP value of the heat pump unit is further improved, and meanwhile, the manufacturing cost, the failure rate and the maintenance cost of the heat pump system can be reduced due to the removal of the compressor.
As an alternative embodiment, the operation energy of the heating device 5 may be one or more of electric energy, combustion heat energy, and solar energy, and may be set according to actual use conditions and use environments. The heating means 5 is thermally or thermally conductive in a heat transfer manner depending on the field conditions.
As an alternative embodiment, a check valve 6 and a constant pressure valve 7 are further provided on the second pipeline 20.
Wherein, a check valve 6 is arranged between the evaporator 2 and the quantitative pressurizing device 4 for preventing high pressure (P)2) Reverse impact of refrigerant gas; the high pressure (P) is generated and generated by matching the action of the quantitative supercharging device 42) Equal pressure of refrigerant gas, counteracting high pressure (P)2) The reverse action of the refrigerant gas makes the system refrigerant gas in P1The positive running at the original flow rate is realized.
The constant pressure valve 7 is arranged between the heating device 5 and the condenser 1 and ensures that the pressure is P2Is turned on under the condition of ensuring T2Meets the set requirements.
As an optional embodiment, the heat pump unit further includes a control system 100 and an intelligent terminal 200 connected to the control system, fig. 2 is a control flow chart of the heat pump unit of the present invention, and as shown in fig. 2, the heat pump unit is provided with an execution function of artificial intelligence by setting the control system 100.
Wherein, the outlet of the evaporator 2 is provided with a first temperature acquisition device 101, the liquid outlet end of the condenser 1 is provided with a second temperature acquisition device 102, the outlet of the heating device 5 is provided with a third temperature acquisition device 103, and the first temperature acquisition device 101, the second temperature acquisition device 102 and the third temperature acquisition device 103 are all connected with the control system 100.
Specifically, the first temperature acquisition device 101, the second temperature acquisition device 102 and the third temperature acquisition device 103 all adopt temperature sensors; first pressure acquisition device 201 all adopts pressure sensor with second pressure acquisition device 202, temperature sensor is connected with control system 100, can gather the export of evaporimeter 2, the temperature in the play liquid end of condenser 1 and heating device 5's exit, because condenser 1, heating device 5 and evaporimeter 2 all are connected with control system 100, the parameter is gathered the back immediately, handle the back through intelligent terminal 200 and go on according to actual use needs through control system 100, ensure that the unit is under the prerequisite that satisfies the user demand, normally, operate steadily.
As an optional implementation, a first pressure acquisition device 201 and a second pressure acquisition device 202 are further included.
The first pressure acquisition device 201 is disposed at an outlet of the evaporator 2, the second pressure acquisition device 202 is disposed at an outlet of the heating device 5, and both the first pressure acquisition device 201 and the second pressure acquisition device 202 are connected to the control system 100.
The evaporator is characterized by further comprising a flow collecting device 301, the flow collecting device 301 is connected with the control system 100, the flow collecting device 301 is arranged at an outlet of the evaporator 2 and used for collecting refrigerant flow at the outlet of the evaporator 2, and the flow collecting device 301 adopts a flow sensor.
The condenser 1, the heating device 5, and the evaporator 2 are connected to a control system 100, and the evaporation temperature and pressure (T) of the evaporator 2 are controlled1、P1) Flow rate, temperature and pressure (T) of refrigerant gas output from the heating device 52、P2) The parameters such as the temperature of the hot water prepared by the condenser 1 are collected in real time, and the parameters are processed by the intelligent terminal 200, and then the pressure output, the power output of the heating device 5, the opening pressure adjustment of the constant pressure valve 7 and the like are regulated and controlled by the control system 100, so that the normal operation of the unit is ensured.
An energy-saving heat pump system comprises the heat pump unit. Comprising a condenser 1, an evaporator 2, a first line 10 and a second line 20. The condenser 1, the first pipeline 10, the evaporator 2 and the second pipeline 20 are sequentially connected to form a circulation loop, a refrigerant is arranged in the circulation loop, the refrigerant in the embodiment adopts Freon, other refrigerants can be selected according to actual use conditions during actual use, and the refrigerant which is non-toxic, environment-friendly, strong in stability and high in evaporation latent heat is preferably selected for use;
the first pipe 10 is provided with a shut-off device 3 for effectively shutting off the refrigerant introduced from the condenser 1 into the evaporator 2. The cut-off device 3 can reasonably distribute the refrigerant to the evaporator 2, so that the evaporator 2 is in a normal working state. The second pipeline 20 is sequentially provided with a quantitative supercharging device 4 and a heating device 5, the quantitative supercharging device 4 is positioned between the evaporator 2 and the heating device 5, wherein the heating device 5 adopts a direct-heating type warming supercharger, and the quantitative supercharging device 4 adopts a quantitative booster pump for quantifying the high pressure (P) coming out of the evaporator 22) Refrigerant gas.
From the ideal gas state equation P1V1/T1＝P2V2/T2Under the condition of same volume, P can be obtained1/T1＝P2/T2。P1、T1The pressure and temperature of the refrigerant gas after heat absorption by the evaporator are known. So as to obtain P2＝cT2I.e. P2∝T2. The working process of the energy-saving heat pump system is Carnot circulation, and T is heated by the refrigerant gas absorbing heat of the evaporator 21To reach T2Thereby generating a high temperature (T)2) High voltage (P)2) Refrigerant gas. In the process, the refrigerant gas absorbs heat (Q ═ cm delta t) and obviously energy is increased.
The energy-saving heat pump system adopts a directly-heated heat pump, the refrigerant gas is directly heated by the heating device 5 to generate high-temperature high-pressure gas, the exhaust temperature is improved, the energy loss in the process of converting electric energy into mechanical energy and then converting the mechanical energy into heat energy is saved due to the absence of a compressor, the COP value of the heat pump unit is further improved, and meanwhile, the manufacturing cost, the failure rate and the maintenance cost of the heat pump system can be reduced due to the removal of the compressor.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The utility model provides a heat pump set, its characterized in that includes condenser, evaporimeter, first pipeline and second pipeline, wherein:
the condenser, the first pipeline, the evaporator and the second pipeline are sequentially connected to form a circulation loop, and a refrigerant is arranged in the circulation loop;
the first pipeline is provided with a cut-off device;
the second pipeline is sequentially provided with a quantitative supercharging device and a heating device, and the quantitative supercharging device is positioned between the evaporator and the heating device.
2. A heat pump unit according to claim 1, characterised in that: the heating device adopts a direct-heating type temperature-increasing supercharger.
3. A heat pump unit according to claim 2, characterised in that: the working energy of the heating device adopts one or more of electric energy, combustion heat energy and solar energy, and the heat transfer mode of the heating device adopts heat radiation or heat conduction.
4. A heat pump unit according to any one of claims 1-3, characterised in that: still be provided with check valve and constant pressure valve on the second pipeline, wherein:
the check valve is arranged between the evaporator and the quantitative supercharging device;
the constant pressure valve is arranged between the heating device and the condenser.
5. A heat pump unit according to claim 4, characterised in that: still include control system and with the intelligent terminal that control system connects, wherein:
a first temperature acquisition device is arranged at an outlet of the evaporator, a second temperature acquisition device is arranged at a liquid outlet end of the condenser, a third temperature acquisition device is arranged at an outlet of the heating device, and the first temperature acquisition device, the second temperature acquisition device and the third temperature acquisition device are all connected with the control system;
the condenser, the heating device and the evaporator are all connected with the control system.
6. A heat pump unit according to claim 5, characterised in that: still include first pressure acquisition device and second pressure acquisition device, wherein:
the first pressure acquisition device is arranged at the outlet of the evaporator, the second pressure acquisition device is arranged at the outlet of the heating device, and the first pressure acquisition device and the second pressure acquisition device are connected with the control system.
7. A heat pump unit according to claim 6, characterised in that: the first temperature acquisition device, the second temperature acquisition device and the third temperature acquisition device all adopt temperature sensors;
the first pressure acquisition device and the second pressure acquisition device both adopt pressure sensors.
8. A heat pump unit according to any of claims 5-7, characterised in that: the evaporator is characterized by further comprising a flow collecting device, the flow collecting device is connected with the control system, and the flow collecting device is arranged at an outlet of the evaporator and used for collecting refrigerant flow at the outlet of the evaporator.
9. A heat pump unit according to claim 8, characterised in that: the flow acquisition device adopts a flow sensor.
10. An energy-saving heat pump system, characterized in that: a heat pump unit comprising any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110904010.8A CN113720041A (en) | 2021-08-06 | 2021-08-06 | Heat pump unit and energy-saving heat pump system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110904010.8A CN113720041A (en) | 2021-08-06 | 2021-08-06 | Heat pump unit and energy-saving heat pump system |
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| CN113720041A true CN113720041A (en) | 2021-11-30 |
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| CN202110904010.8A Pending CN113720041A (en) | 2021-08-06 | 2021-08-06 | Heat pump unit and energy-saving heat pump system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09273876A (en) * | 1996-04-08 | 1997-10-21 | Mitsubishi Denki Bill Techno Service Kk | Cooler with natural circulation loop |
| JP2013079739A (en) * | 2011-10-03 | 2013-05-02 | Taiyo Energy Kenkyusho | Device using heater |
| CN105783278A (en) * | 2016-04-20 | 2016-07-20 | 太原理工大学 | Fluorine pump and heat pump composite heat-accumulation type direct expansion type solar water heating system |
| US20160341458A1 (en) * | 2015-05-20 | 2016-11-24 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Thermal transpiration flow heat pump |
| CN110986492A (en) * | 2019-12-10 | 2020-04-10 | 江西艾维斯机械有限公司 | Freezing type dryer and control method thereof |
-
2021
- 2021-08-06 CN CN202110904010.8A patent/CN113720041A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09273876A (en) * | 1996-04-08 | 1997-10-21 | Mitsubishi Denki Bill Techno Service Kk | Cooler with natural circulation loop |
| JP2013079739A (en) * | 2011-10-03 | 2013-05-02 | Taiyo Energy Kenkyusho | Device using heater |
| US20160341458A1 (en) * | 2015-05-20 | 2016-11-24 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Thermal transpiration flow heat pump |
| CN105783278A (en) * | 2016-04-20 | 2016-07-20 | 太原理工大学 | Fluorine pump and heat pump composite heat-accumulation type direct expansion type solar water heating system |
| CN110986492A (en) * | 2019-12-10 | 2020-04-10 | 江西艾维斯机械有限公司 | Freezing type dryer and control method thereof |
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