CN110939995A - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
- Publication number
- CN110939995A CN110939995A CN201911311110.9A CN201911311110A CN110939995A CN 110939995 A CN110939995 A CN 110939995A CN 201911311110 A CN201911311110 A CN 201911311110A CN 110939995 A CN110939995 A CN 110939995A
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- CN
- China
- Prior art keywords
- heat exchanger
- fresh air
- conditioning system
- air conditioning
- circulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
Abstract
The invention discloses an air conditioning system, comprising: the fresh air machine with the fresh air heat exchanger, the refrigeration host and the circulating machine with the circulating heat exchanger are further included, and a refrigerant of the refrigeration host circulates through the fresh air heat exchanger and the circulating heat exchanger in sequence through pipelines. According to the invention, the refrigeration host, the fresh air heat exchanger and the circulating heat exchanger are sequentially and circularly communicated through pipelines, so that low-temperature chilled water is cooled and dehumidified by the fresh air heat exchanger, and then is cooled by the circulating heat exchanger, thus a refrigeration unit is shared, the fresh air precooling heat recovery and the maximum utilization rate of the capacity of a water chilling unit are realized, meanwhile, the models of a water pump and a water pipe can be reduced through the large-temperature-difference small-flow design, the energy consumption of an air conditioning system is reduced, and the initial investment of equipment is reduced.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an air conditioning system.
Background
In the traditional temperature and humidity independent control air conditioning system, the chilled water for processing fresh air by a fresh air unit is low-temperature chilled water (the temperature of supplied water is 5-7 ℃ and the temperature of returned water is 10-12 ℃), while the chilled water for processing returned air by a circulator is medium-temperature chilled water (the temperature of supplied water is 10-16 ℃ and the temperature of returned water is 15-21 ℃), so that two working condition cold sources are required to be respectively arranged, a plurality of refrigerating units are required to be respectively arranged to set working conditions for realizing the purpose, and the required installation space is large and the utilization efficiency is.
Disclosure of Invention
The invention provides an air conditioning system, aiming at solving the technical problem that a plurality of refrigerating units are required to be arranged according to working conditions when a fresh air fan and a circulator are adopted simultaneously in the prior art.
The technical scheme adopted by the invention is as follows:
the present invention provides an air conditioning system, comprising: the fresh air machine with the fresh air heat exchanger, the refrigeration host and the circulating machine with the circulating heat exchanger are further included, a refrigerant of the refrigeration host circulates through the fresh air heat exchanger and the circulating heat exchanger in sequence through pipelines, and a water pump is arranged on the pipelines.
The invention also includes: the temperature and humidity controller comprises a temperature and humidity sensor group for detecting indoor temperature and humidity, a branch communicated with a pipeline, a valve component for controlling the refrigerant flow of the fresh air heat exchanger and the circulating heat exchanger, and a controller for controlling the valve component to adjust the refrigerant flow of the fresh air heat exchanger and the circulating heat exchanger so as to enable the indoor temperature and humidity to reach the preset temperature and humidity.
The branch circuit includes: the first branch is connected to the inlet pipeline and the outlet pipeline of the fresh air heat exchanger, and the second branch is connected to the inlet pipeline and the outlet pipeline of the circulating heat exchanger.
The valve assembly includes: the first proportion adjusting three-way valve is arranged at the joint of the first branch and an inlet pipeline or an outlet pipeline of the fresh air heat exchanger, and the second proportion adjusting three-way valve is arranged at the joint of the second branch and an inlet pipeline or an outlet pipeline of the circulating heat exchanger.
And when the indoor humidity does not reach the preset humidity, the controller controls the opening of the first proportional control three-way valve to regulate the flow of the refrigerant entering the fresh air heat exchanger.
And when the indoor temperature does not reach the preset temperature, the controller controls the opening of the second proportional control three-way valve to regulate the flow of the refrigerant entering the fresh air heat exchanger.
Preferably, the fresh air heat exchanger and the circulating heat exchanger are surface coolers.
Preferably, the refrigeration host is a water chilling unit, and the refrigerant is chilled water.
Compared with the prior art, the refrigeration main machine, the fresh air heat exchanger and the circulating heat exchanger sequentially circulate through pipelines, so that low-temperature refrigerants with lower temperature are cooled and dehumidified through the fresh air heat exchanger, and then the circulating return air is cooled through the circulating heat exchanger, so that the fresh air machine and the circulator can share one refrigeration unit, the fresh air precooling heat recovery and the maximum utilization rate of the capacity of the water chilling unit are realized, meanwhile, the models of a water pump and a water pipe can be reduced through the large-temperature-difference small-flow design, the energy consumption of an air conditioning system is reduced, the initial investment of equipment is reduced, and the.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.
As shown in fig. 1, the present invention provides an air conditioning system including: the fresh air machine 1 is communicated with the indoor and outdoor, and a fresh air heat exchanger 11 is arranged in the fresh air machine 1 to dehumidify fresh air blown into the indoor; the circulator 3 is used for indoor circulating air supply and circulating indoor air, and is provided with a circulating heat exchanger 31 for cooling the circulating air to control indoor temperature; the refrigeration host machine 2 is communicated with the fresh air heat exchanger 11 and the circulating heat exchanger 31 through a pipeline 4, a refrigerant which exchanges heat through the refrigeration host machine is made to circulate through the fresh air heat exchanger and the circulating heat exchanger in sequence through pipelines, a low-temperature refrigerant with lower temperature is made to be cooled and dehumidified through the fresh air heat exchanger, and then the circulating heat exchanger is used for cooling circulating return air, so that the fresh air machine and the circulator can share one refrigeration unit, the fresh air precooling heat recovery is realized, the maximum utilization rate of the capacity of the refrigeration unit is realized, meanwhile, the water pump and the water pipe model can be reduced through the large-temperature-difference and small-flow design, the energy consumption of.
The invention also includes: the temperature and humidity sensor group comprises a branch, a valve assembly and a controller, wherein the branch is communicated with a pipeline, the valve assembly is arranged at the joint of the pipeline and the branch to control the flow of refrigerants entering the fresh air heat exchanger and the circulating heat exchanger, and the controller can control the valve assembly to adjust the flow of the refrigerants of the fresh air heat exchanger and the circulating heat exchanger according to the difference between the indoor current temperature and the set target temperature and humidity.
The valve assembly and the branch specifically comprise: a first branch 51, a second branch 52, a first proportion regulating three-way valve 61 and a second proportion regulating three-way valve 62, wherein the first branch 51 is connected to an inlet pipeline and an outlet pipeline of the fresh air heat exchanger 11, and the second branch 52 is connected to an inlet pipeline and an outlet pipeline of the circulating heat exchanger 31; the first proportional control three-way valve 61 is arranged at the joint of the first branch 51 and the inlet pipeline of the fresh air heat exchanger 11, and can also be arranged at the joint of the first branch 51 and the outlet pipeline of the fresh air heat exchanger 11; the second proportional three-way valve 62 is provided at a junction of the second branch 52 and the inlet line of the circulation heat exchanger 31, and may be provided at a junction of the second branch 52 and the outlet line of the circulation heat exchanger 31.
In a specific embodiment, the fresh air heat exchanger 11 and the circulating heat exchanger 31 are surface air coolers. The refrigeration main machine 2 is a water chilling unit, the refrigerant is chilled water, and a circulating water pump for providing power for circulation is arranged on the pipeline.
The working condition of the water chilling unit is set to be that water supply is 5 ℃/water return is 17 ℃, chilled water of the water chilling unit at 5 ℃ is discharged and is firstly supplied to the fresh air fan, after being dehumidified by the surface air cooler of the fresh air fan, the heated chilled water is directly supplied to the surface air cooler of the circulator to be cooled, and finally the chilled water return at 17 ℃ is returned to the refrigeration host to complete the refrigeration cycle.
In specific control, when the indoor humidity does not reach the preset humidity, the controller controls the first proportion to adjust the opening of the three-way valve, and the flow of the refrigerant entering the fresh air heat exchanger is increased to change the refrigerating capacity.
When the indoor temperature does not reach the preset temperature, the controller controls the opening of the second proportional control three-way valve, and the flow of the refrigerant entering the fresh air heat exchanger is increased to improve the refrigerating capacity.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An air conditioning system comprising: the fresh air machine with the fresh air heat exchanger and the refrigeration host machine are characterized by further comprising a circulating machine with a circulating heat exchanger, and a refrigerant of the refrigeration host machine circulates through the fresh air heat exchanger and the circulating heat exchanger in sequence through pipelines.
2. The air conditioning system of claim 1, further comprising: the temperature and humidity controller comprises a temperature and humidity sensor group for detecting indoor temperature and humidity, a branch communicated with a pipeline, a valve component for controlling the refrigerant flow of the fresh air heat exchanger and the circulating heat exchanger, and a controller for controlling the valve component to adjust the refrigerant flow of the fresh air heat exchanger and the circulating heat exchanger so as to enable the indoor temperature and humidity to reach the preset temperature and humidity.
3. The air conditioning system as claimed in claim 2, wherein said branch circuit comprises: the first branch is connected to the inlet pipeline and the outlet pipeline of the fresh air heat exchanger, and the second branch is connected to the inlet pipeline and the outlet pipeline of the circulating heat exchanger.
4. The air conditioning system as claimed in claim 3, wherein said valve assembly comprises: the first proportion adjusting three-way valve is arranged at the joint of the first branch and an inlet pipeline or an outlet pipeline of the fresh air heat exchanger, and the second proportion adjusting three-way valve is arranged at the joint of the second branch and an inlet pipeline or an outlet pipeline of the circulating heat exchanger.
5. The air conditioning system as claimed in claim 4, wherein the controller controls the opening of the first proportional control three-way valve to control the flow of the refrigerant into the fresh air heat exchanger when the indoor humidity does not reach a preset humidity.
6. The air conditioning system as claimed in claim 4, wherein the controller controls the opening of the second proportional control three-way valve to adjust the flow rate of the refrigerant into the fresh air heat exchanger when the indoor temperature does not reach a preset temperature.
7. The air conditioning system as claimed in claim 1, wherein the fresh air heat exchanger and the circulating heat exchanger are surface air coolers.
8. The air conditioning system as claimed in claim 1, wherein said refrigeration host is a chiller.
9. The air conditioning system as claimed in claim 1, wherein the refrigerant is chilled water.
10. The air conditioning system of claim 1, further comprising a water pump disposed on the conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911311110.9A CN110939995A (en) | 2019-12-18 | 2019-12-18 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911311110.9A CN110939995A (en) | 2019-12-18 | 2019-12-18 | Air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110939995A true CN110939995A (en) | 2020-03-31 |
Family
ID=69911319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911311110.9A Pending CN110939995A (en) | 2019-12-18 | 2019-12-18 | Air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110939995A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864905A (en) * | 2021-10-19 | 2021-12-31 | 中国船舶工业集团公司第七0八研究所 | Air conditioner |
| CN113899025A (en) * | 2021-09-26 | 2022-01-07 | 珠海格力电器股份有限公司 | Heat recovery air treatment system |
| CN113983565A (en) * | 2021-10-19 | 2022-01-28 | 中国船舶工业集团公司第七0八研究所 | Air conditioning system |
| CN115031312A (en) * | 2022-05-23 | 2022-09-09 | 北京新机场建设指挥部 | Airplane ground air conditioning system, automatic control method and system |
Citations (5)
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|---|---|---|---|---|
| CN102589058A (en) * | 2011-01-10 | 2012-07-18 | 广东迪奥技术工程有限公司 | Efficient energy-saving air-conditioning system with independently controlled temperature and humidity and adjusting method thereof |
| CA2899460A1 (en) * | 2013-02-15 | 2014-08-21 | Venmar Ces, Inc. | Dedicated outdoor air system with pre-heating and method for same |
| CN206755418U (en) * | 2017-03-27 | 2017-12-15 | 上海工程技术大学 | A kind of pump type heat rotary dehumidifier |
| CN209279429U (en) * | 2018-11-28 | 2019-08-20 | 上海朗绿建筑科技股份有限公司 | Double evaporators fresh air dehumidification unit |
| CN209588313U (en) * | 2019-03-04 | 2019-11-05 | 上海朗诗规划建筑设计有限公司 | A kind of multi-state Fresh air handing device |
-
2019
- 2019-12-18 CN CN201911311110.9A patent/CN110939995A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589058A (en) * | 2011-01-10 | 2012-07-18 | 广东迪奥技术工程有限公司 | Efficient energy-saving air-conditioning system with independently controlled temperature and humidity and adjusting method thereof |
| CA2899460A1 (en) * | 2013-02-15 | 2014-08-21 | Venmar Ces, Inc. | Dedicated outdoor air system with pre-heating and method for same |
| CN206755418U (en) * | 2017-03-27 | 2017-12-15 | 上海工程技术大学 | A kind of pump type heat rotary dehumidifier |
| CN209279429U (en) * | 2018-11-28 | 2019-08-20 | 上海朗绿建筑科技股份有限公司 | Double evaporators fresh air dehumidification unit |
| CN209588313U (en) * | 2019-03-04 | 2019-11-05 | 上海朗诗规划建筑设计有限公司 | A kind of multi-state Fresh air handing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899025A (en) * | 2021-09-26 | 2022-01-07 | 珠海格力电器股份有限公司 | Heat recovery air treatment system |
| CN113864905A (en) * | 2021-10-19 | 2021-12-31 | 中国船舶工业集团公司第七0八研究所 | Air conditioner |
| CN113983565A (en) * | 2021-10-19 | 2022-01-28 | 中国船舶工业集团公司第七0八研究所 | Air conditioning system |
| CN115031312A (en) * | 2022-05-23 | 2022-09-09 | 北京新机场建设指挥部 | Airplane ground air conditioning system, automatic control method and system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200331 |