CN114508810B - Fresh air purifier, heat exchanger, system and control method - Google Patents
Fresh air purifier, heat exchanger, system and control method Download PDFInfo
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- CN114508810B CN114508810B CN202111566277.7A CN202111566277A CN114508810B CN 114508810 B CN114508810 B CN 114508810B CN 202111566277 A CN202111566277 A CN 202111566277A CN 114508810 B CN114508810 B CN 114508810B
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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
- F24F7/003—Ventilation in combination with air cleaning
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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
-
- 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
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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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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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
- 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
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a fresh air purifier, a heat exchanger, a system and a control method, which relate to the technical field of air purification and have the technical scheme that: the fresh air pipeline is provided with a first flow sensor positioned at the output side of the first filter; a compensation pipeline is arranged between the outlet end of the fresh air pipeline and the exhaust pipeline; the compensation pipeline is sequentially provided with a flow regulating valve, a second filter and a second flow sensor along the output direction; the output end of the first flow sensor is connected with the first input end of the controller, and the first output end of the controller is connected with the first input end of the flow regulating valve and used for realizing fresh air flow compensation; the output end of the second flow sensor is connected with the second input end of the controller, and the second output end of the controller is connected with the second input end of the flow regulating valve for realizing flow compensation correction. The invention can reduce the energy consumption of fresh air introduction and effectively improve the working efficiency of fresh air introduction.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to a fresh air purifier, a heat exchanger, a system and a control method.
Background
With the continuous improvement of the living standard of people, air conditioners and other devices for adjusting indoor temperature, humidity and cleanliness are gradually popularized to every family. The indoor environment has much greater influence on the health of people than the outdoor environment, and the long-time activity of people in the indoor environment and other factors can lead to the reduction of indoor air quality.
At present, outdoor fresh air is generally introduced into a room after being filtered through a fresh air pipeline, meanwhile, the indoor air is discharged through an exhaust pipeline, and the introduced fresh air is required to be treated through a plurality of environments such as temperature, humidity and the like, so that the current indoor environment condition is met, a large amount of energy is consumed in the process, and the fresh air introduction efficiency is reduced to a certain extent; in addition, as the introduced fresh air is continuously filtered, the wind resistance of the filter is increased due to the attached dust, so that the output flow after filtration cannot reach the preset output flow, and the working efficiency of fresh air introduction is seriously reduced.
Therefore, how to study and design a fresh air purification technology capable of overcoming the defects is a problem which needs to be solved at present.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a fresh air purifier, a heat exchanger, a system and a control method.
The technical aim of the invention is realized by the following technical scheme:
in a first aspect, a fresh air purifier is provided, including a fresh air duct and an exhaust duct, the fresh air duct is provided with a first filter, and further includes a controller, the fresh air duct is provided with a first flow sensor located at an output side of the first filter;
a compensation pipeline is arranged between the outlet end of the fresh air pipeline and the exhaust pipeline;
the compensation pipeline is sequentially provided with a flow regulating valve, a second filter and a second flow sensor along the output direction;
the output end of the first flow sensor is connected with the first input end of the controller, and the first output end of the controller is connected with the first input end of the flow regulating valve and used for realizing fresh air flow compensation;
the output end of the second flow sensor is connected with the second input end of the controller, and the second output end of the controller is connected with the second input end of the flow regulating valve for realizing flow compensation correction.
Further, the first filter and the second filter are the same filter.
In a second aspect, a heat exchanger is provided, including heat exchange shell, characterized by, the heat exchange shell is equipped with at least one fresh air purifier according to the first aspect, and fresh air pipeline and exhaust duct are all worn to locate in the heat exchange shell, and the compensation pipeline sets up outside the heat exchange shell.
Further, the parts of the fresh air pipeline and the exhaust pipeline, which are positioned in the heat exchange shell, are of double-spiral structures.
In a third aspect, a fresh air purification system is provided, comprising at least one fresh air purifier according to the first aspect.
In a fourth aspect, a fresh air purification system is provided, which is characterized by comprising at least one fresh air purifier according to the second aspect.
In a fifth aspect, there is provided a control method applied to a fresh air purifier according to the first aspect, comprising the steps of:
s1: the method comprises the steps of collecting the actual output flow after filtration in a fresh air pipeline through a first flow sensor;
s2: when the actual output flow is lower than the preset output flow, calculating according to the difference value between the actual output flow and the preset output flow to obtain a compensation flow, and generating a compensation control signal according to the compensation flow;
s3: the flow regulating valve responds to the compensation control signal and opens a corresponding output range, and air in the exhaust pipeline is filtered and then is converged to an outlet of the fresh air pipeline;
s4: collecting the actual compensation flow of the compensation pipeline after filtering through a second flow sensor;
s5: compensating and correcting the output range according to the difference value of the output range and the actual compensation flow to obtain a corresponding corrected range, and generating a corrected control signal according to the corrected range;
s6: the flow regulating valve adjusts the output range in response to the corrected control signal.
Further, the compensation flow is further adjusted according to the ratio of the preset output flow to the actual output flow when calculating, and the specific calculation formula is as follows:
wherein ΔΦ represents the compensation flow; phi 0 Representing a preset output flow; phi 1 Representing the actual output flow.
Further, when the correction range is obtained, the correction range is adjusted according to the wind resistance influence of the fresh air pipeline, and a specific calculation formula is as follows:
wherein ΔΦ' represents the correction range; ΔΦ represents the compensation flow; phi 0 Representing a preset output flow; phi 1 Representing the actual output flow; phi 2 Representing the actual compensation flow; phi 1 ' represents the flow value acquired by the first flow sensor after the flow compensation process.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the fresh air purifier provided by the invention, when the actual output flow of the filtered fresh air pipeline is lower than the preset output flow, part of air in the exhaust pipeline is collected into the fresh air pipeline after being filtered through the compensation pipeline, so that fresh air flow compensation is realized, the energy consumption of fresh air introduction can be reduced, and the working efficiency of fresh air introduction can be effectively improved; meanwhile, the measuring range of the flow regulating valve is adaptively adjusted according to the filtered actual compensation flow in the compensation pipeline after the fresh air flow is compensated, so that the flow actually output by the compensation pipeline can be more accurately compensated for the introduced fresh air;
2. according to the invention, the filter with the same structure as that in the fresh air pipeline is adopted in the compensation pipeline, so that the deviation of fresh air when the fresh air is introduced into compensation is smaller, and the reliability of the fresh air purifier is effectively improved;
3. compared with the traditional heat exchanger, the heat exchanger provided by the invention has the advantages that energy is secondarily utilized in a heat conduction mode, and air in the exhaust pipeline is directly led into the fresh air pipeline after being filtered, so that the energy recycling efficiency can be further improved;
4. the invention also considers the resistance influence of the second filter when the fresh air is introduced and compensated, takes the ratio of the preset output flow to the actual output flow as a coefficient, carries out positive correlation adjustment on the difference value between the actual output flow and the preset output flow, and effectively reduces the difference between the total amount of fresh air introduced after primary compensation and the preset output flow;
5. when compensation correction is carried out, the influence of the compensated flow on the flow when the fresh air is introduced is considered, so that the accuracy of the fresh air compensation correction is high.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a schematic diagram of a fresh air purifier according to an embodiment of the present invention;
fig. 2 is a flowchart of the operation of the fresh air cleaner in accordance with an embodiment of the present invention.
In the drawings, the reference numerals and corresponding part names:
101. a fresh air pipeline; 102. an exhaust duct; 103. a first flow sensor; 104. a first filter; 105. a compensation pipe; 106. a flow regulating valve; 107. a second filter; 108. a second flow sensor.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
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.
Example 1: as shown in fig. 1, the fresh air purifier comprises a fresh air pipeline 101 and an exhaust pipeline, wherein the fresh air pipeline 101 is provided with a first filter 104, the fresh air purifier also comprises a controller, and the fresh air pipeline 101 is provided with a first flow sensor 103 positioned at the output side of the first filter 104; a compensation pipeline 105 is arranged between the outlet end of the fresh air pipeline 101 and the exhaust pipeline; the compensation pipe 105 is provided with a flow regulating valve 106, a second filter 107 and a second flow sensor 108 in this order along the output direction; the output end of the first flow sensor 103 is connected with the first input end of the controller, and the first output end of the controller is connected with the first input end of the flow regulating valve 106 for realizing fresh air flow compensation; an output of the second flow sensor 108 is connected to a second input of the controller, which is connected to a second input of the flow regulating valve 106 for implementing the flow compensation correction.
When the actual output flow of the fresh air pipeline 101 after filtration is lower than the preset output flow, part of air in the exhaust pipeline 102 is collected into the fresh air pipeline 101 after filtration treatment through the compensation pipeline 105, so that fresh air flow compensation is realized, the energy consumption of fresh air introduction can be reduced, and the working efficiency of fresh air introduction can be effectively improved; meanwhile, the measuring range of the flow regulating valve 106 is adaptively adjusted according to the filtered actual compensation flow in the compensation pipeline 105 after the fresh air flow is compensated, so that the flow actually output by the compensation pipeline 105 can be more accurately compensated for the introduced fresh air;
in the present embodiment, the first filter 104 and the second filter 107 are the same filter. The filter with the same structure as that in the fresh air pipeline 101 is adopted in the compensation pipeline 105, so that the deviation of fresh air when the fresh air is introduced into compensation is smaller, and the reliability of the fresh air purifier is effectively improved;
example 2: a heat exchanger comprises a heat exchange housing provided with at least one fresh air purifier as in embodiment 1, a fresh air pipeline 101 and an exhaust pipeline are both arranged in the heat exchange housing in a penetrating manner, and a compensation pipeline 105 is arranged outside the heat exchange housing. Compared with the traditional energy reutilization method by a heat conduction mode, the air in the exhaust pipeline 102 is directly converged into the fresh air pipeline 101 after being filtered, so that the energy reutilization efficiency can be further improved.
In this embodiment, the portions of the fresh air duct 101 and the exhaust duct located in the heat exchange housing are in a double spiral structure.
Example 3: a fresh air purification system comprising at least one fresh air purifier as in embodiment 1 or comprising at least one fresh air purifier as in embodiment 2.
Example 4: a control method applied to a fresh air purifier according to embodiment 1, as shown in fig. 2, includes the steps of:
s1: the filtered actual output flow in the fresh air pipeline 101 is collected through the first flow sensor 103;
s2: when the actual output flow is lower than the preset output flow, calculating according to the difference value between the actual output flow and the preset output flow to obtain a compensation flow, and generating a compensation control signal according to the compensation flow;
s3: the flow regulating valve 106 responds to the compensation control signal and opens the corresponding output range, so that the air in the exhaust pipeline 102 is filtered and then is converged to the outlet of the fresh air pipeline 101;
s4: collecting the actual compensated flow of the compensation pipe 105 after filtering through the second flow sensor 108;
s5: compensating and correcting the output range according to the difference value of the output range and the actual compensation flow to obtain a corresponding corrected range, and generating a corrected control signal according to the corrected range;
s6: the flow regulating valve 106 adjusts the output range in response to the modified control signal.
When the compensation flow is calculated, the difference value between the actual output flow and the preset output flow is regulated according to the ratio of the preset output flow to the actual output flow, and the specific calculation formula is as follows:
wherein ΔΦ represents the compensation flow; phi 0 Representing a preset output flow; phi 1 Representing the actual output flow.
The resistance influence of the second filter 107 is also considered when the fresh air is introduced and compensated, the difference between the actual output flow and the preset output flow is positively correlated and regulated by taking the ratio of the preset output flow to the actual output flow as a coefficient, and the difference between the total amount of the fresh air introduced after the primary compensation and the preset output flow is effectively reduced.
When the correction range is obtained, the adjustment is also carried out according to the wind resistance influence of the fresh air pipeline 101, and the specific calculation formula is as follows:
wherein ΔΦ' represents the correction range; ΔΦ represents the compensation flow; phi 0 Representing a preset output flow; phi 1 Representing the actual output flow; phi 2 Representing the actual compensation flow; phi 1 ' represents the flow value acquired by the first flow sensor 103 after the flow compensation process.
When compensation correction is carried out, the influence of the compensated flow on the flow when the fresh air is introduced is considered, so that the accuracy of the fresh air compensation correction is high.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The fresh air purifier comprises a fresh air pipeline (101) and an exhaust pipeline, wherein the fresh air pipeline (101) is provided with a first filter (104), and is characterized by further comprising a controller, and the fresh air pipeline (101) is provided with a first flow sensor (103) positioned at the output side of the first filter (104);
a compensation pipeline (105) is arranged between the outlet end of the fresh air pipeline (101) and the exhaust pipeline;
the compensation pipeline (105) is sequentially provided with a flow regulating valve (106), a second filter (107) and a second flow sensor (108) along the output direction;
the output end of the first flow sensor (103) is connected with the first input end of the controller, and the first output end of the controller is connected with the first input end of the flow regulating valve (106) for realizing fresh air flow compensation;
the output end of the second flow sensor (108) is connected with the second input end of the controller, and the second output end of the controller is connected with the second input end of the flow regulating valve (106) for realizing flow compensation correction.
2. A fresh air cleaner according to claim 1, wherein the first filter (104) and the second filter (107) are the same filter.
3. A heat exchanger comprising a heat exchange housing, characterized in that the heat exchange housing is provided with at least one fresh air purifier as claimed in claim 1 or 2, a fresh air duct (101) and an exhaust duct are both arranged in the heat exchange housing in a penetrating manner, and a compensation duct (105) is arranged outside the heat exchange housing.
4. A heat exchanger according to claim 3, wherein the portions of the fresh air duct (101) and the exhaust air duct located in the heat exchange housing are of double helix construction.
5. A fresh air purification system comprising at least one fresh air purifier according to claim 1 or 2.
6. A control method, characterized in that the method is applied to a fresh air cleaner according to claim 1 or 2, comprising the steps of:
s1: collecting the filtered actual output flow in the fresh air pipeline (101) through a first flow sensor (103);
s2: when the actual output flow is lower than the preset output flow, calculating according to the difference value between the actual output flow and the preset output flow to obtain a compensation flow, and generating a compensation control signal according to the compensation flow;
s3: the flow regulating valve (106) responds to the compensation control signal and opens a corresponding output range, and air in the exhaust pipeline (102) is filtered and then is converged to an outlet of the fresh air pipeline (101);
s4: collecting the filtered actual compensation flow of the compensation pipeline (105) through a second flow sensor (108);
s5: compensating and correcting the output range according to the difference value of the output range and the actual compensation flow to obtain a corresponding corrected range, and generating a corrected control signal according to the corrected range;
s6: the flow regulating valve (106) adjusts the output range in response to the corrected control signal.
7. The control method according to claim 6, wherein the compensation flow is calculated by adjusting a difference between the actual output flow and the preset output flow according to a ratio of the preset output flow to the actual output flow, and a specific calculation formula is:
wherein ΔΦ represents the compensation flow; phi 0 Representing a preset output flow; phi 1 Representing the actual output flow.
8. The control method according to claim 6, wherein the adjustment is further performed according to the wind resistance effect of the fresh air duct (101) when the correction range is obtained, and the specific calculation formula is:
wherein ΔΦ' represents the correction range; ΔΦ represents the compensation flow; phi 0 Representing a preset output flow; phi 1 Representing the actual output flow; phi 2 Representing the actual compensation flow; phi 1 ' represents the flow value acquired by the first flow sensor (103) after the flow compensation process.
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| Title |
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