CN109140651A - A kind of energy-saving indoor air exchange system and method - Google Patents
A kind of energy-saving indoor air exchange system and method Download PDFInfo
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- CN109140651A CN109140651A CN201810760784.6A CN201810760784A CN109140651A CN 109140651 A CN109140651 A CN 109140651A CN 201810760784 A CN201810760784 A CN 201810760784A CN 109140651 A CN109140651 A CN 109140651A
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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
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
- F24F11/47—Responding to energy costs
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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
-
- 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
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of energy-saving indoor air exchange system and methods.The air exchange system, including heat exchanger, temperature sensor and controller.Wherein, the internal heat exchanger is provided with the exhaust duct and fresh air pipeline for being able to carry out heat exchange, is additionally provided with air draft by-pass line, fresh air by-pass line；The temperature sensor is for monitoring room temperature T1With outdoor temperature T2；Controller includes temperature determination unit, switch control unit, valve control unit；The temperature determination unit compares | T1‑T2| with T0Size, according to comparison result by switch control unit control heat exchanger opening and closing, control by valve control unit the opening and closing of the valve.The method can determine that automatically indoor and outdoor temperature is poor, and automatically control opening and closing and the air draft path, fresh air path of heat exchanger, and air-conditioning system and heat exchanger are in power save mode on the whole after opening heat exchanger, have the advantages that energy conservation and automatic adjustment.
Description
Technical field
The present invention relates to a kind of energy-saving indoor air exchange system and methods, belong to ventilating system technical field.
Background technique
It is known that air-conditioned room is often more closed space, in personnel's comparatively dense, air quality will be deteriorated,
It does harm to huamn body.Therefore, existing air-conditioning system, is often provided with fresh air channel and air exhaust passage, by indoor part
Air discharge, while outdoor air being introduced, improve indoor air quality.
Since air in air-conditioned room and outdoor air have the temperature difference, air-conditioning system load will be increased, new wind load often accounts for
In the building inner region of densely populated place when the 30%~50% of entire air-conditioning system load, especially summer, new wind load is even accounted for
To 70% or more, so reducing new wind load has become one of main path of air conditioner system energy saving.Currently, more common side
Formula is that heat exchanger is arranged, and will carry out hot transmitting between air draft (indoor discharge air) and fresh air (outdoor enters air), reduces
The temperature difference of fresh air and room temperature, then will be in Leads to new breeze room.(pre-cooling) fresh air is preheated using the energy in air draft, new
Wind enter the room or the surface air cooler of air-treatment unit carry out heat and wet treatment before, increase (reduction) fresh air enthalpy, to reduce
Air-conditioning system load.
However, heat exchanger itself is also to require the expenditure of energy, when heat exchanger energy consumption itself is greater than fresh air energy-saving,
Energy consumption cannot not only be reduced by opening heat exchanger, will increase energy consumption instead.Current air-conditioning system does not comprehensively consider hot friendship
Whole energy effect between parallel operation energy consumption and fresh air energy-saving is unable to reach effective energy saving purpose.
Summary of the invention
Whole energy effect between heat exchanger energy consumption and fresh air energy-saving is not comprehensively considered for current air-conditioning system,
The problem of being unable to reach effective energy saving purpose, the present invention provides a kind of energy-saving indoor air exchange system and method, roots
Heat exchanger opening and closing is automatically controlled according to indoor/outdoor temperature-difference, reaches effective energy-efficient purpose.
In order to solve the above technical problems, the present invention includes following technical solution:
A kind of energy-saving indoor air exchange system, including heat exchanger, temperature sensor and controller, wherein
The internal heat exchanger is provided with the exhaust duct and fresh air pipeline for being able to carry out heat exchange, in the heat exchange
The air draft by-pass line for being not involved in heat exchange, fresh air by-pass line are additionally provided with inside or outside device；The exhaust duct, air draft
By-pass line, fresh air pipeline, fresh air by-pass line inlet be provided with valve；
The temperature sensor is for monitoring room temperature T1With outdoor temperature T2；
Controller includes temperature determination unit, switch control unit, valve control unit；It is set in the temperature determination unit
It is equipped with temperature threshold T0, and compare | T1-T2| with T0Size, heat exchanger is controlled by switch control unit according to comparison result
Opening and closing, control by valve control unit the opening and closing of the valve.
Further, the T0It is 8 DEG C~10 DEG C.
Further, the exhaust duct, air draft by-pass line are connected to by triple valve with interior.
Further, the fresh air pipeline, fresh air by-pass line outlet end be connected with auxiliary heating/cooling device, it is described
Auxiliary heating/cooling device is connected to interior, and fresh air is heated or cooled through the auxiliary heating/cooling device and handles laggard enter the room
It is interior.
Correspondingly, air exchange is carried out using the energy-saving indoor air exchange system the present invention also provides a kind of
Method, comprising:
S1. temperature sensor monitors room temperature T1With outdoor temperature T2, and monitoring data are transmitted to controller；
S2. the temperature determination unit of controller compares | T1-T2| with T0Size, as | T1-T2|≥T0When, it is transferred to step
S3；When | T1-T2| < T0When, it is transferred to step S4；
S3. it opens heat exchanger, opens the valve of exhaust duct, fresh air pipeline inlet, close air draft by-pass line, new
The valve of the inlet of wind by-pass line；Indoor exhaust wind is discharged through exhaust duct, and outdoor fresh air enters fresh air pipeline, with air-exhausting duct
Enter interior after air draft heat exchange in road；
S4. it closes heat exchanger, closes the valve of exhaust duct, fresh air pipeline inlet, open air draft by-pass line, new
The valve of the inlet of wind by-pass line；Indoor exhaust wind is discharged through air draft by-pass line, outdoor fresh air through fresh air by-pass line into
Enter interior.
Further, in step S3, outdoor fresh air enters fresh air pipeline, after the air draft heat exchange in exhaust duct, by auxiliary
Heating/cooling device is helped to carry out that processing is heated or cooled, subsequently into interior；In step S4, outdoor fresh air enters fresh air bypass
Pipeline is carried out that processing is heated or cooled by auxiliary heating/cooling device, subsequently into interior.
The present invention due to using the technology described above, is allowed to compared with prior art, have the following advantages that and actively imitate
Fruit: the energy-saving indoor air exchange system passes through the set temperature threshold value T in controller0, determine in temperature determination unit
Indoor and outdoor temperature difference is greater than T0When, it is then turned on heat exchanger, otherwise, room is completed by fresh air by-pass line and air draft by-pass line
Interior air exchange is always ensured that air-conditioning system and heat exchanger are in power save mode on the whole after heat exchanger is opened, solves
After existing heat exchanger unlatching the problem of many times comprehensive energy consumption increases instead.The method can determine room automatically
Inside and outside temperature difference, and opening and closing and the air draft path, fresh air path of heat exchanger are automatically controlled, air-conditioning system after opening heat exchanger
System is in power save mode with heat exchanger on the whole, has the advantages that energy conservation and automatic adjustment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one of one embodiment of the invention energy-saving indoor air exchange system；
Fig. 2 is the structural schematic diagram of another energy-saving indoor air exchange system in one embodiment of the invention；
Fig. 3 be another embodiment of the present invention provides a kind of energy-saving indoor air exchange method flow chart.
Figure label is as follows:
In the room 10-；
100- heat exchanger；101- open-close on-off one；102- valve one；103- valve two；104- valve three；105- valve
Four；106- triple valve one；107- triple valve two；；110- exhaust duct；120- fresh air pipeline；130- air draft by-pass line；140-
Fresh air by-pass line；
200- temperature sensor；
300- controller；310- temperature determination unit；320- switch control unit；330- valve control unit；
400- assists heating/cooling device；410- open-close on-off two.
Specific embodiment
Energy-saving indoor air exchange system provided by the invention and method are made below in conjunction with the drawings and specific embodiments
It is further described.In conjunction with following explanation, advantages and features of the invention will be become apparent from.It should be noted that attached drawing is all made of
Very simplified form and use non-accurate ratio, only to it is convenient, lucidly aid in illustrating the mesh of the embodiment of the present invention
's.
Embodiment one
As shown in Figure 1, a kind of energy-saving indoor air exchange system provided in this embodiment, including heat exchanger 100, temperature
Spend sensor 200 and controller 300.
Wherein, heat exchanger 100 is internally provided with the exhaust duct 110 and fresh air pipeline 120 for being able to carry out heat exchange,
The air draft by-pass line 130 for being not involved in heat exchange, fresh air by-pass line 140 are additionally provided with inside or outside heat exchanger 100；Row
Air piping 110, air draft by-pass line 130, fresh air pipeline 120, fresh air by-pass line 140 inlet be respectively arranged with and control
Valve 1, the valve 2 103, valve 3 104, valve 4 105 that valve control unit 330 in device 300 connects.Heat exchange
Device 100 further includes the open-close on-off 1 connecting with the switch control unit 320 in controller 300.
Wherein, temperature sensor 200 is for monitoring room temperature T1With outdoor temperature T2.Temperature sensor 200 lays mode
For 10 are arranged a temperature sensor 200 indoors, for monitoring room temperature T1, at upper setting one of heat exchanger 100
Temperature sensor 200, for monitoring outdoor temperature T2.It is of course also possible to by temperature sensor 200 be set to exhaust duct 110,
In air draft by-pass line 130, for measuring the temperature T of air draft1。
Wherein, controller 300 includes temperature determination unit 310, switch control unit 320, valve control unit 330.Temperature
Temperature threshold T is provided in degree judging unit 3100, and compare | T1-T2| with T0Size, according to comparison result by switch control
Unit 320 controls the opening and closing of heat exchanger 100, by the opening and closing of 330 control valve of valve control unit.
Specifically, working as | T1-T2|≥T0When, heat exchanger 100 is opened, exhaust duct 110,120 entrance of fresh air pipeline are opened
Valve 1, the valve 3 104 at place close the valve two of the inlet of air draft by-pass line 130, fresh air by-pass line 140
103, valve 4 105；Indoor exhaust wind is discharged through exhaust duct 110, and outdoor fresh air enters fresh air pipeline 120, with exhaust duct 110
Enter interior 10 after interior air draft heat exchange.
When | T1-T2| < T0When, heat exchanger 100 is closed, the valve of exhaust duct 110,120 inlet of fresh air pipeline is closed
Door one 102, valve 3 104, open valve 2 103, the valve of the inlet of air draft by-pass line 130, fresh air by-pass line 140
4 105；Indoor exhaust wind is discharged through air draft by-pass line 130, outdoor fresh air enter after fresh air by-pass line 140 without heat exchange into
Enter interior 10.
It should be noted that assuming that 100 operating power consumption of heat exchanger is Q1, the progress fresh air air exhaust heat friendship of heat exchanger 100
It changes, reduction air conditioner fresh air energy consumption is Q2, when indoor/outdoor temperature-difference is larger, Q1< Q2, energy saving effect can be played by opening heat exchanger 100
Fruit；When indoor and outdoor temperature difference is smaller, Q1> Q2, open heat exchanger 100 and more consume energy instead.It is assumed that indoor/outdoor temperature-difference is T
When, Q1=Q2, referred to as energy-consuming balance point, temperature threshold meet T0≥T.It can blower according to heat exchanger 100 and other consumptions
The power of energy element, calculates its operating power consumption Q1, according to fresh air temperature change value after heat exchange under the different temperature difference, measuring and calculating is empty
Adjust and reduce few fresh air energy consumption Q2, through test of many times, indoor and outdoor temperature difference T when energy-consuming balance point is found out, to set as needed
Determine temperature threshold T0.The results showed T when energy-consuming balance point is 6 DEG C~8 DEG C, specifically because 100 power of heat exchanger, heat are handed over
It changes the difference of the factors such as efficiency and changes.It is therefore preferable that being temperature threshold T08 DEG C~10 DEG C of value, for example take T0=8 DEG C, then
For example take T0=10 DEG C.Certainly, when the T of measurement is 6 DEG C, T can also be taken0=7 DEG C, as long as meeting T0>=T.
In conclusion energy-saving indoor air exchange system provided in this embodiment, passes through set temperature threshold value T0, and sentence
Indoor and outdoor temperature difference is determined greater than T0When, it is then turned on heat exchanger 100, otherwise, passes through fresh air by-pass line 140 and air draft bypass pipe
Room air exchange is completed in road 130, and air-conditioning system is located on the whole with heat exchanger 100 after being always ensured that the unlatching of heat exchanger 100
In power save mode, solve the problems, such as to increase instead after existing heat exchanger 100 is opened in many times comprehensive energy consumption.
Further, as shown in Fig. 2, exhaust duct 110, air draft by-pass line 130 are connected by triple valve 1 and interior 10
It is logical.Valve 1, valve 2 103 in Fig. 1 is substituted by the way that triple valve 1 is arranged, can equally can be realized control row
Wind is discharged from exhaust duct 110 or is discharged by air draft by-pass line 130, and can simplify pipeline and route arrangement.Similarly, may be used
Triple valve 2 107 is arranged in the inlet of fresh air pipeline 120, fresh air by-pass line 140, the valve three in Fig. 1 can be replaced
104, valve 4 105.
Further, as shown in Fig. 2, the outlet end of fresh air pipeline 120, fresh air by-pass line 140 is connected with auxiliary plus hot/cold
But device 400, auxiliary heating/cooling device 400 are connected to interior 10.Auxiliary heating/cooling device 400 can heat fresh air
Or cooling treatment, keep fresh air identical or close as indoor air temperature, then enter back into interior 10, improves user experience.Auxiliary
Open-close on-off 2 410 is provided on heating/cooling device 400, open-close on-off 2 410 is connect with controller 300, controller 300
The opening and closing of controllable auxiliary heating/cooling device 400.
Embodiment two
As shown in figure 3, present embodiments provide a kind of energy-saving indoor air exchange system using in embodiment one into
The method of row air exchange is described further this method below in conjunction with Fig. 1 to Fig. 3.Described method includes following steps:
S1. temperature sensor 200 monitors room temperature T1With outdoor temperature T2, and monitoring data are transmitted to controller
300；
S2. the temperature determination unit 310 of controller 300 compares | T1-T2| with T0Size, as | T1-T2|≥T0When, it is transferred to
Step S3；When | T1-T2| < T0When, it is transferred to step S4；
S3. heat exchanger 100 is opened, the valve of exhaust duct 110,120 inlet of fresh air pipeline is opened, is closed by air draft
Thread a pipe 130, fresh air by-pass line 140 inlet valve；Indoor exhaust wind is discharged through exhaust duct 110, outdoor fresh air into
Enter fresh air pipeline 120, with after the air draft heat exchange in exhaust duct 110 enter interior 10；
S4. heat exchanger 100 is closed, the valve of exhaust duct 110,120 inlet of fresh air pipeline is closed, is opened by air draft
Thread a pipe 130, fresh air by-pass line 140 inlet valve；Indoor exhaust wind is discharged through air draft by-pass line 130, outdoor new
Wind enters the room 10 through fresh air by-pass line 140.
Preferred embodiment is, in step S3, outdoor fresh air enters fresh air pipeline 120, with the row in exhaust duct 110
It after wind-heat exchange, is carried out that processing is heated or cooled by auxiliary heating/cooling device 400, subsequently into interior 10；In step S4,
Outdoor fresh air enters fresh air by-pass line 140, is carried out that processing is heated or cooled by auxiliary heating/cooling device 400, subsequently into
Interior 10.
Energy-saving indoor air provided in this embodiment exchanges method, can determine that automatically indoor and outdoor temperature is poor, and automatic
Control opening and closing and the air draft path, fresh air path of heat exchanger 100, air-conditioning system and heat exchange after opening heat exchanger 100
Device 100 is in power save mode on the whole, has the advantages that energy conservation and automatic adjustment.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (6)
1. a kind of energy-saving indoor air exchange system, which is characterized in that including heat exchanger, temperature sensor and controller,
Wherein,
The internal heat exchanger is provided with the exhaust duct and fresh air pipeline for being able to carry out heat exchange, in the heat exchanger
Portion or outside are additionally provided with the air draft by-pass line for being not involved in heat exchange, fresh air by-pass line；The exhaust duct, air draft bypass
Pipeline, fresh air pipeline, fresh air by-pass line inlet be provided with valve；
The temperature sensor is for monitoring room temperature T1With outdoor temperature T2；
Controller includes temperature determination unit, switch control unit, valve control unit；It is provided in the temperature determination unit
Temperature threshold T0, and compare | T1-T2| with T0Size, opened according to comparison result by switch control unit control heat exchanger
It closes, control the opening and closing of the valve by valve control unit.
2. energy-saving indoor air exchange system as described in claim 1, which is characterized in that the T0It is 8 DEG C~10 DEG C.
3. energy-saving indoor air exchange system as described in claim 1, which is characterized in that by the exhaust duct, air draft
It threads a pipe and is connected to by triple valve with interior.
4. energy-saving indoor air exchange system as described in any one of claims 1 to 3, which is characterized in that the fresh wind tube
Road, fresh air by-pass line outlet end be connected with auxiliary heating/cooling device, the auxiliary heating/cooling device and it is indoor even
Logical, fresh air enters the room after processing is heated or cooled in the auxiliary heating/cooling device.
5. a kind of side for carrying out air exchange using the described in any item energy-saving indoor air exchange systems of Claims 1-4 4
Method characterized by comprising
S1. temperature sensor monitors room temperature T1With outdoor temperature T2, and monitoring data are transmitted to controller；
S2. the temperature determination unit of controller compares | T1-T2| with T0Size, as | T1-T2|≥T0When, it is transferred to step S3；When |
T1-T2| < T0When, it is transferred to step S4；
S3. it opens heat exchanger, opens the valve of exhaust duct, fresh air pipeline inlet, close air draft by-pass line, by fresh air
The valve for the inlet threaded a pipe；Indoor exhaust wind is discharged through exhaust duct, and outdoor fresh air enters fresh air pipeline, in exhaust duct
Air draft heat exchange after enter interior；
S4. it closes heat exchanger, closes the valve of exhaust duct, fresh air pipeline inlet, open air draft by-pass line, by fresh air
The valve for the inlet threaded a pipe；Indoor exhaust wind is discharged through air draft by-pass line, and outdoor fresh air enters room through fresh air by-pass line
It is interior.
6. method as claimed in claim 5, which is characterized in that
In step S3, outdoor fresh air enters fresh air pipeline, after the air draft heat exchange in exhaust duct, by auxiliary heating/cooling
Device carries out that processing is heated or cooled, subsequently into interior；
In step S4, outdoor fresh air enters fresh air by-pass line, is carried out that processing is heated or cooled by auxiliary heating/cooling device,
Subsequently into interior.
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|---|---|---|---|---|
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| CN111578424A (en) * | 2020-05-21 | 2020-08-25 | 珠海格力电器股份有限公司 | New fan |
| CN111878862A (en) * | 2020-06-24 | 2020-11-03 | 青岛海尔空调电子有限公司 | Control method and system of range hood |
| CN114060997A (en) * | 2021-11-21 | 2022-02-18 | 潍坊昌大建设集团有限公司 | Heat exchange energy-saving system for housing construction |
| CN114234308A (en) * | 2021-11-19 | 2022-03-25 | 广东伊斐净化科技有限公司 | Cold-heat compensation split type total heat exchange fresh air conditioning system and control method thereof |
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