CN115751713A - Fluid circulation device, fluid circulation system and control method - Google Patents
Fluid circulation device, fluid circulation system and control method Download PDFInfo
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- CN115751713A CN115751713A CN202211281310.6A CN202211281310A CN115751713A CN 115751713 A CN115751713 A CN 115751713A CN 202211281310 A CN202211281310 A CN 202211281310A CN 115751713 A CN115751713 A CN 115751713A
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Abstract
The invention relates to the field of fluid circulation, in particular to a fluid circulation device, an electrical appliance fluid circulation system and a control method, wherein the fluid circulation device is used for refrigeration equipment and heating equipment; the heating equipment comprises a heating heat exchange part, and the heating heat exchange part is used for absorbing heat from the outside; it is characterized by comprising: the temperature adjusting unit is used for generating heat and/or cold, and the circulating pipeline, the refrigerating heat exchanging part, the heating heat exchanging part and the temperature adjusting unit are sequentially coupled with the circulating pipeline; when the heat quantity released by the cooling heat exchange part to the fluid is greater than the cold quantity released by the heating heat exchange part to the fluid, the temperature regulating unit generates the cold quantity to cool the fluid; when the heat released by the cooling heat exchange part to the fluid is less than the cold released by the heating heat exchange part to the fluid, the temperature regulating unit generates heat to heat the fluid, so that the energy utilization rate of the cooling and heating equipment is improved.
Description
Technical Field
The invention relates to the field of energy conservation, in particular to a fluid circulation device, a fluid circulation system and a control method.
Background
Along with the improvement of living standard of people, air conditioners, refrigerators and water heaters become necessities of life of people gradually. However, the existing household air conditioners, refrigerators and air source heat pump water heaters are usually air cooling systems, the efficiency is low, the energy consumption is high, and meanwhile, when the air conditioners refrigerate in summer, condensation heat is discharged to the outside. When the refrigerator is refrigerating, the condensing heat is discharged to the room, and the air conditioner discharges the condensing heat from the room. The heat pump water heater needs to absorb heat from the outside to provide hot water. In the whole process, there is a great waste of heat.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
In order to improve the energy utilization rate of refrigerating and heating equipment, a fluid circulating device, a fluid circulating system and a control method are provided.
In a first aspect, the present invention provides a fluid circulation device for a refrigeration apparatus and a heating apparatus, the refrigeration apparatus being provided with a refrigeration heat-exchanging portion for releasing heat; the heating equipment is provided with a heating heat exchange part, and the heating heat exchange part is used for absorbing heat; the fluid circulation device comprises:
a temperature adjusting unit for releasing or absorbing heat;
a circulation line to which the cooling heat-exchanging portion, the heating heat-exchanging portion, and the temperature adjustment unit are coupled, the cooling heat-exchanging portion releasing heat to fluid when the fluid circulates in the circulation line, the heating heat-exchanging portion absorbing heat from the fluid;
when the cooling heat exchange part releases heat to the fluid more than the heating heat exchange part absorbs heat from the fluid, the temperature adjusting unit absorbs heat from the fluid to cool the fluid; when the amount of heat released from the cooling heat exchanging portion to the fluid is smaller than the amount of heat absorbed from the fluid by the heating heat exchanging portion, the temperature adjusting unit releases to warm the fluid.
Preferably, the temperature adjusting unit comprises a semiconductor refrigerating piece, and the semiconductor refrigerating piece comprises a hot end and a cold end;
the circulating pipeline comprises a first branch and a second branch, the hot end is coupled with the first branch, and the cold end is coupled with the second branch;
when the heat released by the refrigerating heat exchange part to the fluid is larger than the heat absorbed by the heating heat exchange part from the fluid, the first branch is disconnected and the second branch is opened, so that the cold end absorbs the heat of the fluid to cool the fluid;
when the heat released by the cooling heat exchange part to the fluid is smaller than the heat absorbed by the heating heat exchange part from the fluid, the first branch is opened and the second branch is disconnected, so that the hot end releases heat to heat the fluid.
Preferably, the semiconductor refrigeration element comprises a PN junction, a hot end of the PN junction is coupled to the first branch, and a cold end of the PN junction is coupled to the second branch.
Preferably, the semiconductor refrigerating element comprises a solar assembly, the solar assembly comprises a positive terminal and a negative terminal, the positive terminal is connected with the hot end of the PN junction, and the negative terminal is connected with the cold end of the PN junction.
Preferably, the temperature adjusting unit further comprises a heating device connected to the circulation pipeline for heating the fluid in the circulation pipeline.
Preferably, the heating device is an electric heater, the circulation pipeline is formed with a heating part, and when the fluid needs to be heated, the electric heater heats the fluid flowing through the heating part.
Preferably, the temperature adjusting unit further includes a cooling device connected to the circulation line for cooling the fluid in the circulation line.
Preferably, the cooling device is a closed cooling tower, the circulation pipeline is provided with a cooling part, and the cooling part is arranged in the closed cooling tower; when the fluid needs to be cooled, the closed cooling tower cools the fluid flowing through the cooling part.
Preferably, the heating means and the cooling means are located downstream of the semiconductor chilling element.
Preferably, the fluid circulation device further comprises a water pump and an expansion water tank; the expansion water tank is connected to the circulating pipeline and is higher than the highest point of the circulating pipeline, and the water pump is used for driving fluid in the circulating pipeline to flow.
Preferably, the fluid circulation device further comprises:
the first temperature sensor is arranged at the upstream of the refrigeration heat exchange part and used for measuring the temperature of the energy storage fluid before flowing through the refrigeration heat exchange part; the second temperature sensor is arranged at the downstream of the heating heat exchange part and used for measuring the temperature of the energy storage fluid flowing through the heating heat exchange part;
and the controller is used for controlling the temperature adjusting unit to release or absorb heat so as to heat or cool the fluid according to the temperatures of the fluid measured by the first temperature sensor and the second temperature sensor.
In a second aspect, the present invention also provides a fluid circulation system comprising:
the system comprises refrigeration equipment and heating equipment, wherein the refrigeration equipment is provided with a refrigeration heat exchange part which is used for releasing heat; the heating equipment is provided with a heating heat exchange part, and the heating heat exchange part is used for absorbing heat;
the fluid circulation device, the circulation pipeline of the fluid circulation device is coupled with the cooling heat exchange part and the heating heat exchange part.
In a third aspect, the present invention provides a control method for controlling the fluid circulation system of the electrical appliance, wherein the temperature measured by the first temperature sensor is T1, and the temperature measured by the second temperature sensor is T2;
when T2 > T1:
the control system controls the work of the PN junction and connects the cold end of the PN junction into a circulating pipeline to cool the fluid flowing through the PN junction so as to cool the fluid; when the temperature of the fluid flowing through the PN junction is still larger than T1, the controller controls the closed cooling tower to work so as to reduce the temperature of the fluid;
when T2 < T1:
the control system controls the work of the PN junction and accesses the hot end of the PN junction into a circulating pipeline to heat fluid flowing through the PN junction; when the temperature of the fluid after flowing through the PN junction is still smaller than T1, the controller controls the electric heater to work so as to heat the fluid.
According to the invention, the fluid circulating device absorbs energy from the heating part of the refrigeration equipment for storage, when the fluid flows through the heating equipment, the energy is released to the heating equipment, the temperature of the fluid in the circulating pipeline is raised or lowered through the temperature adjusting unit, so that the temperature of the fluid is in a stable state, and the fluid circularly flows to achieve the purpose of absorbing heat of the refrigeration heat exchanger and releasing heat (absorbing cold) of the heating heat exchanger, so that the utilization of the energy is improved, the waste of the heat released by the refrigeration heat exchanger is reduced, and the consumption of the heating heat exchanger on the energy is reduced.
Drawings
FIG. 1 is a schematic view of an electrical fluid circulation system according to an embodiment of the present invention;
fig. 2 is a fluid circulation system of an electrical appliance with the control system removed according to an embodiment of the present invention.
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention.
In the drawings: 1-a circulation line; 2-PN junction; 201-hot end; 202-cold end; 3-a solar module; 4-an electric heater; 5-closed cooling tower; 6, a water pump; 7-a control system; 801-a first temperature sensor; 802-a second temperature sensor; 803-a third temperature sensor; 804-a fourth temperature sensor; 9-an expansion water tank; 11-air conditioner heat exchanger; 12-refrigerator heat exchanger; 13-heat pump water heater.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order; the "front end" and the "back end" are opposite. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The invention relates to the field of energy circulation, in particular to a fluid circulation device, an electrical appliance fluid circulation system and a control method.
Along with the improvement of living standard of people, air conditioners, refrigerators and water heaters become necessities of life of people gradually. However, the existing household air conditioners, refrigerators and air source heat pump water heaters are usually air cooling systems, the efficiency is low, the energy consumption is high, and meanwhile, when the air conditioners refrigerate in summer, condensation heat is discharged to the outside. When the refrigerator is refrigerating, the condensing heat is discharged to the room, and the air conditioner discharges the condensing heat from the room. The heat pump water heater needs to absorb heat from the outside to provide hot water. In the whole process, there is a great waste of heat.
In view of the above problems, a fluid circulation device, an electrical appliance fluid circulation system and a control method are provided.
In a first aspect, as shown in fig. 1-2, the present invention provides a fluid circulation device for a refrigeration apparatus and a heating apparatus, the refrigeration apparatus comprising a refrigeration heat exchanging portion for exhausting heat to the outside; the heating equipment comprises a heating heat exchange part, and the heating heat exchange part is used for absorbing heat from the outside; it is characterized by comprising: a temperature adjusting unit for releasing or absorbing heat; the circulating pipeline 1 is coupled with the refrigerating heat exchange part, the heating heat exchange part and the temperature adjusting unit, when fluid circulates in the circulating pipeline 1, the refrigerating heat exchange part releases heat to the fluid, and the heating heat exchange part absorbs the heat from the fluid; when the heat released by the cooling heat exchange part to the fluid is greater than the heat absorbed by the heating heat exchange part from the fluid, the temperature adjusting unit absorbs the heat from the fluid to cool the fluid; when the amount of heat released from the cooling heat exchanging portion to the fluid is less than the amount of heat absorbed from the fluid by the heating heat exchanging portion, the temperature adjusting unit releases to heat the fluid.
The fluid absorbs the heat released by the refrigeration heat exchange part, and releases the heat stored by the fluid to the heating heat exchange part, so that the release capacity and the absorbed energy between different devices are mutually compensated, the utilization rate of the energy is improved, the energy waste is reduced, meanwhile, the temperature of the fluid is in a stable state by using the temperature adjusting unit, a certain temperature difference is ensured between the fluid and the refrigeration heat exchange part, the heat conduction is ensured, a certain temperature difference is ensured between the fluid and the heating heat exchange part, the heat conduction is ensured, and the efficiency of absorbing and releasing the heat by the fluid is improved.
Preferably, the temperature regulation unit comprises a semiconductor refrigeration member comprising a hot end 201 and a cold end 202; the circulating pipeline comprises a first branch and a second branch, a hot end 201 is coupled with the first branch, and a cold end 202 is coupled with the second branch; when the heat released by the cooling heat exchange part to the fluid is greater than the heat absorbed by the heating heat exchange part from the fluid, the first branch is disconnected and the second branch is opened, so that the cold end 202 absorbs the heat of the fluid to cool the fluid; when the heat released by the cooling heat exchange portion to the fluid is less than the heat absorbed by the heating heat exchange portion from the fluid, the first branch is opened and the second branch is disconnected, so that the hot end 201 releases heat to heat the fluid. The semiconductor refrigeration element comprises a PN junction 2, a hot end 201 of the PN junction 2 is coupled with a first branch, and a cold end 202 of the PN junction 2 is coupled with a second branch. . The fluid is subjected to temperature regulation through the PN junction 2, so that the fluid is in a stable stability value, the PN junction 2 generates cold and heat simultaneously, the heat exchange between the fluid and the cold end 202 and the hot end 201 of the PN junction 2 can be controlled rapidly, and the control on the temperature of the fluid is improved. The opening or the disconnection of the first branch and the second branch is controlled by two control valves.
Preferably, the semiconductor refrigerating element comprises a solar element, the solar element comprises a positive terminal and a negative terminal, the positive terminal is connected with a hot end 201 of the PN junction 2, and the negative terminal is connected with a cold end 202 of the PN junction 2; when the solar component works, the hot end 201 of the PN junction 2 generates heat, and the freezing of the PN junction 2 generates cold.
The PN junction 2 is powered by solar energy, so that the solar photovoltaic power generation device is more environment-friendly; can set up energy storage battery etc. and store the electric quantity that solar energy produced, when needing to use, supply power to PN junction 2 through the battery.
Preferably, the temperature adjustment unit further comprises a heating device connected to the circulation line 1 for heating the fluid in the circulation line 1.
When the temperature of the fluid cannot reach the expected value and is lower due to the adjustment of the heat and the cold generated by the PN junction 2 on the fluid, the fluid is heated by the heating device, and the stability of the temperature of the fluid is further ensured.
Preferably, the heating device is an electric heater 4, the circulation line 1 is formed with a heating part, and when the fluid needs to be heated, the electric heater 4 heats the fluid flowing through the heating part. The electric heater 4 is more convenient to control the amount of heat generated. The electric heating device can be heated by solar energy; the electric quantity generated by the solar energy can be stored by setting an energy storage battery and the like, and when the solar energy is required to be used, the electric heater 4 is powered by the battery.
Preferably, the temperature adjustment unit further comprises a cooling device connected to the circulation line 1 for cooling the fluid in the circulation line 1.
When the temperature of the fluid is higher, the fluid is cooled through the cooling device, and the stability of the temperature of the fluid is ensured.
The fluid may be water, ethylene glycol, or other fluid capable of absorbing and releasing heat.
Preferably, the cooling device is a closed cooling tower 5, the circulation pipeline 1 is provided with a cooling part, and the cooling part is arranged in the closed cooling tower 5; when the fluid needs to be cooled, the closed cooling tower 5 cools down the fluid flowing through the cooling portion.
The fluid is cooled by the closed cooling tower 5, and the stability of the temperature of the fluid is ensured.
Preferably, the heating means and the cooling means are located downstream of the semiconductor chilling element. The fluid temperature is preferably adjusted through the semiconductor refrigerating element, the adjusting precision is high, and when solar energy is used, the solar water heater is more environment-friendly and energy-saving.
Preferably, the fluid circulation device further comprises a water pump 6 and an expansion water tank 9; the expansion water tank 9 is connected on the circulating pipeline 1 and is higher than the highest point of the circulating pipeline 1, and the water pump 6 is used for driving the fluid flow in the circulating pipeline 1.
The water pump 6 drives fluid to flow when working, pressure unevenness inevitably occurs when the fluid flows, so that the fluid fluctuates, the expansion water tank 9 can buffer the fluctuation and can accommodate the volume change of the fluid caused by the fluctuation, and the fluid in the circulating pipeline 1 circulates smoothly and stably; the electric appliance can be a household electric appliance or a factory electric appliance, and the fluid circulating device can be used by the device for absorbing energy as long as the electric appliance comprises the device for releasing energy.
Preferably, the fluid circulation device further comprises: the temperature measuring device comprises a first temperature sensor 801 and a second temperature sensor 802, wherein the first temperature sensor 801 is arranged at the upstream of the refrigerating and heat exchanging part and is used for measuring the temperature of energy storage fluid before flowing through the refrigerating and heat exchanging part; the second temperature sensor 802 is disposed downstream of the heating heat exchanging portion and is configured to measure the temperature of the energy storage fluid flowing through the heating heat exchanging portion; and a controller 7 for controlling the temperature adjusting unit to release or absorb heat to raise or lower the temperature of the fluid according to the temperatures of the fluid measured by the first temperature sensor 801 and the second temperature sensor 802.
A fluid circulation system comprising: the refrigeration equipment is provided with a refrigeration heat exchange part, and the refrigeration heat exchange part is used for releasing heat; the heating equipment is provided with a heating heat exchange part which is used for absorbing heat; such as a fluid circulation device, a circulation pipeline 1 of the fluid circulation device is coupled with a cooling heat exchange part and a heating heat exchange part.
To further regulate the temperature of the fluid, a third temperature sensor 803 and a fourth temperature sensor 804 may be provided on the circulation line 1; the third temperature sensor 803 is arranged between the PN junction 2 and the electric heater 4 for measuring the temperature of the fluid after flowing through the PN junction 2; the closed cooling tower 5 is arranged at the downstream of the electric heater 4, and the fourth temperature sensor 804 is arranged between the electric heater 4 and the closed cooling tower 5 and is used for measuring the temperature of the fluid after flowing through the electric heater 4; the controller 7 controls the electric heater 4 and the closed cooling tower 5 to operate according to the third temperature sensor 803 and the fourth temperature sensor 804. The refrigeration device may also be an ice store, a freezer, etc. The sequence of the refrigerating equipment and the heating equipment in the circulating pipeline 1 can be adjusted, but the refrigerating equipment and the heating equipment are arranged at the downstream of the PN junction 2, so that the creativity of the invention is not influenced. The number of the temperature sensors may be plural, and may be provided at different positions of the circulation line 1.
In a third aspect, the present invention further provides a control method for controlling an electrical appliance fluid circulation system, where the temperature measured by the first temperature sensor 801 is T1, the temperature measured by the second temperature sensor 802 is T2, the temperature measured by the third temperature sensor 803 is T3, and the temperature measured by the fourth temperature sensor 804 is T4; when T2 > T1: the controller 7 controls the work of the PN junction 2 and connects the cold end 202 thereof to the circulating pipeline 1 to cool the fluid flowing through the PN junction 2; when the controller 7 controls the PN junction 2 to work and the cold end 202 of the PN junction is connected to the circulating pipeline 1, and T3 is larger than T1, the controller 7 controls the closed cooling tower 5 to work to cool the cooling part of the circulating pipeline 1; when T2 is less than T1: the controller 7 controls the PN junction 2 to work and connects the hot end 201 thereof into the circulating pipeline 1 to heat the fluid flowing through the PN junction 2; when the controller 7 controls the work of the PN junction 2 and the hot end 201 of the PN junction to be connected into the circulating pipeline 1, and T3 is less than T1, the controller 7 controls the work of the electric heater 4 to heat the heating part of the circulating pipeline 1.
The use of the present invention will be described below with reference to fig. 1-2, taking an air conditioner, a refrigerator and a heat pump water heater as examples in a household appliance.
The air conditioner heat exchanger 11 releases heat to the fluid, the refrigerator heat exchanger 12 releases heat to the fluid, and the heat pump water heater absorbs heat from the fluid; in an initial state, the temperature measured by the first sensor is T1, and T1 can be taken as a reference temperature, and the temperatures measured by the second sensor, the third sensor and the fourth sensor are all T1;
the air conditioner, the refrigerator and the heat pump water heater work simultaneously; the water pump 6 works to enable the fluid to circularly flow on the circulating pipeline 1; after the fluid with the temperature of T1 flows through the air-conditioning heat exchanger 11, the temperature of the fluid rises due to heat release of the air-conditioning heat exchanger 11, the stability of the fluid rises again after the fluid with the temperature rising flows through the refrigerator heat exchanger 12, at the moment, the fluid stores more heat, when the fluid storing more heat flows through the heating heat exchange part of the heat pump water heater, the heating heat exchange part absorbs heat from the fluid due to lower temperature of the heating heat exchange part of the heat pump water heater, the temperature of the fluid drops, the temperature of the heating heat exchange part rises, and the heat pump water heater can absorb more heat from the heating heat exchange part to heat water; the working efficiency of the heat pump water heater is improved, and the energy consumption of the heat pump water heater is reduced.
The temperature of the fluid flowing through the heat pump water heater is T2 when the fluid flows through the second temperature sensor 802; when T2 is less than T1, the temperature of the fluid is reduced, and the heat absorbed by the fluid from the air conditioner heat exchanger 11 and the refrigerator heat exchanger 12 is less than the heat absorbed by the heat pump heat exchanger from the fluid; in order to keep the temperature difference between the fluid and the air conditioner heat exchanger 11 and the refrigerator heat exchanger 12 within a certain range, the efficiency of heat conduction from the inside of the air conditioner and the refrigerator to the respective heat exchangers is ensured; controlling the cold end 202 of the PN junction 2 to be disconnected, connecting the hot end 201 of the PN junction 2 to the circulating pipeline 1, controlling the solar storage battery to supply power to the PN junction 2, generating heat by the hot end 201 of the PN junction 2, heating the fluid flowing through the PN junction 2 by the hot end 201 of the PN junction 2 to raise the temperature of the fluid to T3, and when T3 is less than T1, indicating that the temperature of the fluid is still low, controlling the electric heater 4 to work, wherein the electric energy of the electric heater 4 can be connected with a commercial power and can also use the solar storage battery; the electric heater 4 is operated to heat the fluid flowing through the electric heater 4, the temperature of the fluid heated by the electric heater 4 is T4, when T4 < T1, the heating efficiency of the fluid can be increased to make T4= T1 by increasing the operating current of the PN junction 2 and increasing the operating current of the electric heater 4, and it must be noted here that T4= T1 is not absolutely equal but is equal within a certain range, for example, the error is within 1 ℃. When the temperature T3 of the fluid flowing through the hot end 201 of the PN junction 2 is more than T1, the working current of the PN junction 2 can be reduced, and the heat generation quantity of the hot end 201 is reduced; the same method adjusts the amount of heat generated by the electric heater 4.
When T2 is greater than T1, the temperature of the fluid is increased, and the heat absorbed by the fluid from the air conditioner heat exchanger 11 and the refrigerator heat exchanger 12 is larger than the heat absorbed by the heat pump heat exchanger from the fluid; in order to keep the temperature difference between the fluid and the heat exchanger 11 of the air conditioner and the heat exchanger 12 of the refrigerator within a certain range, the efficiency of heat conduction from the inside of the air conditioner and the refrigerator to the respective heat exchangers is ensured; the hot end 201 of the PN junction 2 is controlled to be disconnected, the cold end 202 of the PN junction 2 is connected to the circulating pipeline 1, the solar storage battery is controlled to supply power to the PN junction 2, the cold end 202 of the PN junction 2 generates cold energy, the cold end 202 of the PN junction 2 refrigerates the fluid flowing through the PN junction 2 to reduce the temperature of the fluid to T3, when T3 is less than T1, the temperature of the fluid is still high, the closed cooling tower 5 is controlled to work, and the electric energy of the closed cooling tower 5 can be commercial power or can be solar storage battery; when T4 > T1, T4= T1 can be achieved by increasing the operating current of the PN junction 2 and increasing the cold water circulation rate of the closed cooling tower 5, and it must be noted that T4= T1 is not absolutely equal but is equal within a certain range, for example, the error is within 1 ℃. When the temperature T3 of the fluid flowing through the hot end 201 of the PN junction 2 is less than T1, the working current of the PN junction 2 can be reduced, and the heat generation quantity of the hot end 201 is reduced; the closed cooling tower 5 is adjusted in the same way.
The temperature of the fluid in the circulating pipeline 1 is controlled by the method, so that the temperature of the fluid is stabilized at a certain value, and a certain temperature difference is kept between the fluid and the air-conditioning heat exchanger 11, the refrigerator heat exchanger 12 and the heating heat exchange part, so that the heat circulation among the air-conditioning heat exchanger 11, the refrigerator heat exchanger 12 and the heating heat exchange part can be fully utilized, the heat exchange efficiency among the heat exchangers and the fluid is improved, and the working efficiency of an air conditioner, a refrigerator and a heat pump water heater is improved.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise construction, arrangements, or implementations described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (14)
1. A fluid circulation device is used for refrigeration equipment and heating equipment, wherein the refrigeration equipment is provided with a refrigeration heat exchange part which is used for releasing heat; the heating equipment is provided with a heating heat exchange part, and the heating heat exchange part is used for absorbing heat; characterized in that said fluid circulation means comprises:
a temperature adjusting unit for releasing or absorbing heat;
a circulation line to which the cooling heat exchanging portion, the heating heat exchanging portion, and the temperature adjusting unit are coupled, the cooling heat exchanging portion releasing heat to fluid when the fluid circulates through the circulation line, the heating heat exchanging portion absorbing heat from the fluid;
when the cooling heat exchange portion releases heat to the fluid more than the heating heat exchange portion absorbs heat from the fluid, the temperature adjustment unit absorbs heat from the fluid to cool the fluid; when the amount of heat released from the cooling heat exchanging portion to the fluid is smaller than the amount of heat absorbed from the fluid by the heating heat exchanging portion, the temperature adjusting unit releases heat to the fluid to warm the fluid.
2. The fluid circulation device of claim 1, wherein the temperature regulating unit comprises a semiconductor refrigeration member comprising a hot end and a cold end;
the circulating pipeline comprises a first branch and a second branch, the hot end is coupled with the first branch, and the cold end is coupled with the second branch;
when the heat released by the refrigerating heat exchange part to the fluid is larger than the heat absorbed by the heating heat exchange part from the fluid, the first branch is disconnected and the second branch is opened, so that the cold end absorbs the heat of the fluid to cool the fluid;
when the heat released by the cooling heat exchange part to the fluid is less than the heat absorbed by the heating heat exchange part from the fluid, the first branch is opened and the second branch is disconnected, so that the hot end releases heat to heat the fluid.
3. The fluid circulation device of claim 2, wherein the semiconductor refrigeration member comprises a PN junction, wherein a hot side of the PN junction is coupled to the first branch and a cold side of the PN junction is coupled to the second branch.
4. The fluid circulation device according to claim 3, wherein the semiconductor refrigeration element comprises a solar module comprising a positive terminal and a negative terminal, the positive terminal connected to the hot end of the PN junction and the negative terminal connected to the cold end of the PN junction.
5. The fluid circulation device according to any one of claims 2 to 4, wherein the temperature adjustment unit further comprises a heating device connected to the circulation line for heating the fluid in the circulation line.
6. The fluid circulation device according to claim 5, wherein the heating means is an electric heater, and the circulation line is formed with a heating portion that heats the fluid flowing through the heating portion when the fluid needs to be heated.
7. The fluid circulation device according to claim 6, wherein the temperature adjustment unit further comprises a cooling device connected to the circulation line for cooling the fluid in the circulation line.
8. The fluid circulation device according to claim 7, wherein the cooling device is a closed cooling tower, the circulation line is formed with a cooling portion, and the cooling portion is provided in the closed cooling tower; when the fluid needs to be cooled, the closed cooling tower cools the fluid flowing through the cooling part.
9. A fluid circulation device according to claim 7, wherein the heating means and the cooling means are located downstream of the semiconductor chilling element.
10. The fluid circulation device according to claim 1, further comprising a water pump and an expansion tank; the expansion water tank is connected to the circulating pipeline and is higher than the highest point of the circulating pipeline, and the water pump is used for driving fluid in the circulating pipeline to flow.
11. The fluid circulation device of claim 1, further comprising:
the first temperature sensor is arranged at the upstream of the refrigeration heat exchange part and used for measuring the temperature of the energy storage fluid before flowing through the refrigeration heat exchange part; the second temperature sensor is arranged at the downstream of the heating heat exchange part and used for measuring the temperature of the energy storage fluid flowing through the heating heat exchange part;
and the controller is used for controlling the temperature adjusting unit to release or absorb heat so as to heat or cool the fluid according to the temperatures of the fluid measured by the first temperature sensor and the second temperature sensor.
12. A fluid circulation system, comprising:
the refrigeration equipment is provided with a refrigeration heat exchange part which is used for releasing heat; the heating equipment is provided with a heating heat exchange part, and the heating heat exchange part is used for absorbing heat;
the fluid circulation device according to any one of claims 1 to 11, wherein a circulation line of the fluid circulation device is coupled to the cooling heat exchange part and the heating heat exchange part.
13. The fluid circulation system of claim 12,
the refrigerating equipment comprises an air conditioner and/or a refrigerator, and the heating equipment comprises a heat pump water heater.
14. A control method for controlling the fluid circulation system according to claim 12 or 13, wherein the first temperature sensor measures a temperature T1, and the second temperature sensor measures a temperature T2;
when T2 > T1:
the control system controls the work of the PN junction and connects the cold end of the PN junction into a circulating pipeline to cool the fluid flowing through the PN junction so as to cool the fluid; when the temperature of the fluid flowing through the PN junction is still larger than T1, the controller controls the closed cooling tower to work so as to reduce the temperature of the fluid;
when T2 < T1:
the control system controls the work of the PN junction and connects the hot end of the PN junction into a circulating pipeline to heat the fluid flowing through the PN junction; when the temperature of the fluid after flowing through the PN junction is still less than T1, the controller controls the electric heater to work so as to heat the fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211281310.6A CN115751713A (en) | 2022-10-19 | 2022-10-19 | Fluid circulation device, fluid circulation system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211281310.6A CN115751713A (en) | 2022-10-19 | 2022-10-19 | Fluid circulation device, fluid circulation system and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115751713A true CN115751713A (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211281310.6A Pending CN115751713A (en) | 2022-10-19 | 2022-10-19 | Fluid circulation device, fluid circulation system and control method |
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| Country | Link |
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| CN (1) | CN115751713A (en) |
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2022
- 2022-10-19 CN CN202211281310.6A patent/CN115751713A/en active Pending
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