CN120160318A - A kind of integrated cold and hot compression condensation system and control method - Google Patents
A kind of integrated cold and hot compression condensation system and control method Download PDFInfo
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- CN120160318A CN120160318A CN202510576694.1A CN202510576694A CN120160318A CN 120160318 A CN120160318 A CN 120160318A CN 202510576694 A CN202510576694 A CN 202510576694A CN 120160318 A CN120160318 A CN 120160318A
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- cold
- heat
- temperature
- circulation pipeline
- heat exchanger
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Classifications
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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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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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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- 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
- F25B41/40—Fluid line arrangements
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
本发明公开了一种冷热一体式压缩冷凝系统及控制方法，冷热一体式压缩冷凝系统包括压缩机、冷凝器和膨胀阀，所述压缩机的出口和冷凝器的进口之间连接有第一换热器，所述压缩机的进口和膨胀阀之间连接有第二换热器，所述第一换热器与用热系统连接，所述第二换热器与用冷系统连接。本发明将用冷系统和用热系统集成到一套压缩冷凝系统中，解决了控制系统复杂，结构复杂的问题，可以同时满足制冷和制热的需求，不用传统的电加热制热，节约资源，节省成本。
The present invention discloses a cold and hot integrated compression condensing system and a control method. The cold and hot integrated compression condensing system includes a compressor, a condenser and an expansion valve. A first heat exchanger is connected between the outlet of the compressor and the inlet of the condenser, a second heat exchanger is connected between the inlet of the compressor and the expansion valve, the first heat exchanger is connected to a heat system, and the second heat exchanger is connected to a cold system. The present invention integrates the cold system and the heat system into a set of compression condensing system, solves the problem of complex control system and complex structure, can meet the needs of cooling and heating at the same time, does not need traditional electric heating for heating, saves resources and saves costs.
Description
Technical Field
The invention belongs to the field of energy conservation, and particularly relates to a cold and hot integrated compression condensing system and a control method.
Background
At present, the condensing system is widely applied in industries such as food, medicine, chemical industry and the like, and when in actual use, due to different seasons, different environmental temperature differences, different objective factors in chemical reaction stages and the like, the demand of using refrigeration or heating is different, the traditional compression condensing system mainly achieves the purpose of refrigeration, one product is required to have two modes of refrigeration and heating at the same time, refrigeration and electric heating are often carried out through the compression condensing system for heating, resource waste is caused, the energy consumption of the product is increased, the control system and the structure are complex, the product needs to be provided with two different sets of systems for meeting the purpose of simultaneously heating and refrigerating, and the condensing system is very inconvenient in the actual use process.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a cold and hot integrated compression condensing system and a control method.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
The utility model provides a cold and hot integral type compression condensing system, includes compressor, condenser and expansion valve, be connected with first heat exchanger between the export of compressor and the import of condenser, be connected with the second heat exchanger between the import of compressor and the expansion valve, first heat exchanger is connected with the heat utilization system, the second heat exchanger is connected with the cold utilization system.
Further, the heat utilization system comprises a heat utilization unit and a heat storage mechanism, wherein the heat storage mechanism is connected with the first heat exchanger for heat exchange through a heat circulation pipeline, and the heat utilization unit is connected with the heat circulation pipeline through a high-temperature bypass branch;
the cooling system comprises a cooling unit and a cooling storage mechanism, wherein the cooling storage mechanism is connected with the second heat exchanger through a cooling circulation pipeline for heat exchange, and the cooling unit is connected with the cooling circulation pipeline through a low-temperature bypass branch.
Further, a hot water pump is arranged on the hot circulation pipeline;
And a cold water pump is arranged on the cold circulation pipeline.
Further, a first regulating valve is arranged at the joint of the high-temperature bypass branch and the thermal circulation pipeline;
And a second regulating valve is arranged at the joint of the low-temperature bypass branch and the cold circulation pipeline.
Further, the system also comprises a control system, wherein the control system is used for controlling the working states of the hot water pump, the cold water pump, the expansion valve, the first regulating valve and the second regulating valve.
Further, the system also comprises a plurality of temperature sensors which are respectively arranged on the heat utilization unit, the cold utilization unit, the heat circulation pipeline and the cold circulation pipeline, and the temperature sensors are connected with the control system.
Further, the heat storage mechanism is a first box body;
the cold storage mechanism is a second box body.
Further, the outer sides of the first box body and the second box body are provided with heat insulation layers.
A control method for the compression condensing system of any one of claims 1-8, comprising:
the method comprises the steps of collecting the actual temperature T1 of a cooling unit and the temperature T2 of a low-temperature heat transfer medium of a cold circulation pipeline in real time through a temperature sensor;
comparing T1 with a preset temperature T0, calculating a temperature deviation delta T=T1-T0, and executing a cold compensation strategy by the control system when delta T is more than 0;
and monitoring delta T change in real time, and gradually reducing the opening degrees of the expansion valve and the second regulating valve when delta T is less than or equal to 0.
Further, the cold quantity compensation strategy is to gradually increase the opening of the expansion valve, synchronously start or increase the opening of the second regulating valve, regulate the rotation speed of the cold water pump according to the feedback value of T2, reduce the rotation speed of the cold water pump when T2 is smaller than a preset value, and increase the rotation speed of the cold water pump when T2 is larger than the preset value.
By adopting the technical scheme, the cold and hot integrated compression condensing system and the control method provided by the invention have the following beneficial effects compared with the prior art.
(1) The invention integrates the cooling system and the heating system into a set of compression condensing system, solves the problems of complex control system and complex structure, and can simultaneously meet the requirements of refrigeration and heating.
(2) The heat utilization system utilizes the exhaust heat source of the compressor, waste heat is recycled for heating, the traditional electric heating module is replaced by energy recycling, the energy consumption required by electric heating is saved, meanwhile, the cooling module is used for supercooling the refrigerant, the efficiency of the cooling module is greatly improved, the waste of cold and hot energy is reduced, the energy consumption is greatly saved, and the overall energy consumption of the system is reduced.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:
FIG. 1 is a schematic diagram of a cold and hot integrated compression condensing system in accordance with the present invention;
1, a compressor;
2. A condenser;
3. a first heat exchanger;
4. A second heat exchanger;
5. an expansion valve;
6. A first case;
7. a second case;
8. A hot water pump;
9. A cold water pump;
10. A heat utilization unit;
11. a cooling unit;
12. a thermal circulation line;
13. a cold circulation line;
14. A high temperature bypass branch;
15. a low temperature bypass branch;
16. A first regulating valve;
17. a second regulating valve;
18. A high temperature water inlet pipe;
19. a high-temperature water outlet pipe;
20. a low temperature water inlet pipe;
21. and a low-temperature water outlet pipe.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, or indirectly connected via an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
As shown in fig. 1, the cold and hot integrated compression condensing system mainly comprises a compressor 1, a condenser 2 and an expansion valve 5, wherein the compressor 1 is used for compressing refrigerant to enable the temperature of the refrigerant to rise to more than 90 ℃, an outlet of the compressor 1 is connected with an inlet of the condenser 2, an outlet of the condenser 2 is connected with an inlet of the compressor 1, a first heat exchanger 3 is tightly connected between the outlet of the compressor 1 and the inlet of the condenser 2, a high-temperature heat transfer medium is ensured to smoothly enter and exchange heat, the high-temperature heat transfer medium enters the first heat exchanger 3 to exchange heat, a fan is arranged on one side of the condenser 2, the high-temperature heat transfer medium subjected to heat exchange by the first heat exchanger 3 is subjected to forced air convection cooling, the expansion valve 5 is arranged between the outlet of the condenser 2 and the inlet of the compressor 1, the cooled refrigerant is throttled to be a low-temperature heat transfer medium with the temperature of about 20 ℃, a second heat exchanger 4 is connected between the inlet of the compressor 1 and the expansion valve 5, the cold energy of the low-temperature medium is transferred to the second heat exchanger 4, the first heat exchanger 3 is connected with the second heat exchanger 4 by the cold system, and the second heat exchanger 4 is connected with the cold system by the cold system.
Further, the first heat exchanger 3 and the second heat exchanger 4 may be plate heat exchangers.
Further, the heat utilization system comprises a heat utilization unit 10 and a heat storage mechanism 6, wherein the heat utilization unit 10 is connected with a heat circulation pipeline 12 through a high-temperature bypass branch 14, the heat storage mechanism 6 is connected with the first heat exchanger 3 through the heat circulation pipeline 12 for heat exchange, the heat circulation pipeline 12 comprises a high-temperature water inlet pipe 18 and a high-temperature water outlet pipe 19, and the heat storage mechanism 6 is used for storing a high-temperature heat transfer medium;
The cooling system comprises a cooling unit 11 and a cooling storage mechanism 7, wherein the cooling unit 11 is connected with a cooling circulation pipeline 13 through a low-temperature bypass branch 15, the cooling storage mechanism 7 is connected with the second heat exchanger 4 through the cooling circulation pipeline 13 for heat exchange, the cooling circulation pipeline 13 comprises a low-temperature water inlet pipe 20 and a low-temperature water outlet pipe 21, and the cooling storage mechanism 7 is used for storing a low-temperature heat transfer medium.
Further, a hot water pump 8 is arranged on the high-temperature water inlet pipe 18, when the temperature of the heat utilization unit 10 is too high, the hot water pump 8 is closed or reduced, when the temperature of the heat utilization unit 10 is too low, the hot water pump 8 is opened or increased, the heat utilization unit 10 is connected with the high-temperature water outlet pipe 19 through the high-temperature bypass branch 14, the high-temperature bypass branch 14 conveys heat to the heat utilization unit 10, the hot water pump 8 is started to push a high-temperature heat transfer medium to flow in the heat circulation pipeline 12, and the temperature of the high-temperature heat transfer medium after passing through the first heat exchanger 3 reaches about 60 ℃ to provide a stable heat source of 50-60 ℃ for the heat utilization unit 10;
The low-temperature water inlet pipe 20 is provided with a cold water pump 9, the cold unit 11 is connected with the low-temperature water outlet pipe 21 through a low-temperature bypass branch 15, the low-temperature bypass branch 15 is used for conveying cold energy to the cold unit 11, the cold water pump 9 is started to push a low-temperature heat transfer medium to flow in the cold circulation pipeline 13, the temperature of the low-temperature heat transfer medium after passing through the second heat exchanger 4 is about minus 10 ℃, and a stable cold source of minus 10 ℃ to 0 ℃ is provided for the cold unit 11.
Further, a first regulating valve 16 is arranged at the joint of the high-temperature water outlet pipe 19 and the high-temperature bypass branch 14, a second regulating valve 17 is arranged at the joint of the low-temperature water outlet pipe 21 and the low-temperature bypass branch 15, the regulation is carried out according to the real-time temperature requirement of the heat utilization unit 10 and the cold utilization unit 11, when the temperature of the heat utilization unit 10 is too high, the first regulating valve 16 is closed or reduced, when the temperature of the heat utilization unit 10 is too low, the first regulating valve 16 is opened or increased, when the temperature of the cold utilization unit 11 is too low, the second regulating valve 17 is closed or reduced, and when the temperature of the cold utilization unit 11 is too high, the second regulating valve 17 is opened or increased.
Further, the system also comprises a control system, wherein the control system is used for controlling the working states of the hot water pump 8, the cold water pump 9, the first regulating valve 16, the second regulating valve 17 and the expansion valve 5, when the temperature of the heat utilization unit 10 is lower, the control system sends a signal to increase the opening degree of the first regulating valve 16, so that more heat flows into the heat utilization unit 10, otherwise, the opening degree is reduced, when the temperature of the refrigerating unit is too high, the opening degree of the second regulating valve 17 is increased, so that more cold flows into the cold utilization unit 11, otherwise, the opening degree is reduced, the temperature of the heat utilization unit 10 and the cold utilization unit 11 can be regulated through the first regulating valve 16 and the second regulating valve 17, the strict requirements of different environments and technologies on the temperature are met, the adaptability of the system is improved, different working scenes and changes can be flexibly dealt with, and the operation effect of the system is improved.
Further, the intelligent temperature control system further comprises a plurality of temperature sensors which are respectively arranged on the heat utilization unit 10, the cold utilization unit 11, the high-temperature water outlet pipe 19 and the low-temperature water outlet pipe 21, and the temperature sensors are connected with the control system, so that accurate temperature data are provided for the control system, the control system can make reasonable regulation and control decisions according to temperature conditions, the stable operation of the system in a set temperature range is ensured, the accuracy of temperature control of the system is improved, and the overall performance of the system is enhanced.
Further, the heat storage mechanism 6 is a first box body;
the cold storage mechanism 7 is a second box body.
Further, the heat preservation layers are arranged on the outer sides of the first box body and the second box body, high-efficiency heat preservation materials such as polyurethane foam and glass wool can be selected as the heat preservation layers, the thickness and the tightness of the heat preservation layers meet the heat preservation requirement, the heat dissipation in the storage process is reduced, the energy consumption is reduced, the energy utilization efficiency of the system is improved, the temperature stability of media in the first box body and the second box body is maintained, a more stable heat source and a more stable cold source are provided for the heat utilization unit 10 and the cold utilization unit 11, and the overall performance of the system is improved.
Further, the medium in the circulation line and the tank is not limited to water, but may be water, oil, or other liquid capable of circulating.
Example 2
The actual temperature T1 of the cooling unit 11 and the low-temperature heat transfer medium temperature T2 of the cooling circulation pipeline 13 are acquired in real time through a temperature sensor;
comparing T1 with a preset temperature T0, calculating a temperature deviation delta T=T1-T0, and executing a cold compensation strategy by the control system when delta T is more than 0;
and monitoring delta T change in real time, and gradually reducing the opening of the expansion valve 5 and the second regulating valve 17 when delta T is less than or equal to 0.
Further, the cold compensation strategy is to gradually increase the opening of the expansion valve 5, synchronously open or increase the opening of the second regulating valve 17, regulate the rotation speed of the cold water pump 9 according to the feedback value of T2, decrease the rotation speed of the cold water pump 9 when T2 is smaller than a preset value, and increase the rotation speed of the cold water pump 9 when T2 is larger than the preset value.
Further, the opening degree of the expansion valve 5 is adjusted to 10% -100%, so that enough low-temperature heat transfer medium is ensured to enter the cooling unit 11 through the low-temperature bypass branch 15.
Example 3
In order to avoid that the temperature of the high-temperature heat transfer medium provided by the compressor 1 cannot reach the preset temperature requirement, an electric heater is added in the heat utilization system, and when the temperature of the high-temperature heat transfer medium in the high-temperature bypass branch 14 cannot reach the preset temperature, the electric heater is started to provide heat required by the preset temperature for the heat utilization unit.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited to the above-mentioned embodiment, but is not limited to the above-mentioned embodiment, and any simple modification, equivalent change and modification made by the technical matter of the present invention can be further combined or replaced by the equivalent embodiment without departing from the scope of the technical solution of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510576694.1A CN120160318A (en) | 2025-05-06 | 2025-05-06 | A kind of integrated cold and hot compression condensation system and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202510576694.1A CN120160318A (en) | 2025-05-06 | 2025-05-06 | A kind of integrated cold and hot compression condensation system and control method |
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| CN120160318A true CN120160318A (en) | 2025-06-17 |
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| CN202510576694.1A Pending CN120160318A (en) | 2025-05-06 | 2025-05-06 | A kind of integrated cold and hot compression condensation system and control method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1165280A (en) * | 1997-02-28 | 1997-11-19 | 黄绍光 | Heat pump, chiller device |
| CN202304060U (en) * | 2011-09-26 | 2012-07-04 | 集美大学 | Household heat pump water heater and central air-conditioning coupled device |
| CN206310793U (en) * | 2016-12-26 | 2017-07-07 | 珠海华隆科技有限公司 | Energy-saving cold-hot integral thermostat machine |
| CN107421161A (en) * | 2016-05-23 | 2017-12-01 | 杭州三花家电热管理系统有限公司 | Heat-pump-type drinking-water system and its control method, heat-pump-type drinking device |
| KR20200013867A (en) * | 2018-07-31 | 2020-02-10 | 전남대학교산학협력단 | Combined cold-hot heat storage system |
-
2025
- 2025-05-06 CN CN202510576694.1A patent/CN120160318A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1165280A (en) * | 1997-02-28 | 1997-11-19 | 黄绍光 | Heat pump, chiller device |
| CN202304060U (en) * | 2011-09-26 | 2012-07-04 | 集美大学 | Household heat pump water heater and central air-conditioning coupled device |
| CN107421161A (en) * | 2016-05-23 | 2017-12-01 | 杭州三花家电热管理系统有限公司 | Heat-pump-type drinking-water system and its control method, heat-pump-type drinking device |
| CN206310793U (en) * | 2016-12-26 | 2017-07-07 | 珠海华隆科技有限公司 | Energy-saving cold-hot integral thermostat machine |
| KR20200013867A (en) * | 2018-07-31 | 2020-02-10 | 전남대학교산학협력단 | Combined cold-hot heat storage system |
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