CN114992746A - Bedside air supply device and method based on displacement ventilation principle - Google Patents
Bedside air supply device and method based on displacement ventilation principle Download PDFInfo
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- CN114992746A CN114992746A CN202210584774.8A CN202210584774A CN114992746A CN 114992746 A CN114992746 A CN 114992746A CN 202210584774 A CN202210584774 A CN 202210584774A CN 114992746 A CN114992746 A CN 114992746A
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
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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
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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
- F24F11/77—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 by controlling the speed of ventilators
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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
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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
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
- F24F13/0604—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser integrated in or forming part of furniture
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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
- F24F13/28—Arrangement or mounting of filters
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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
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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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- 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
- F24F8/15—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 by chemical means
- F24F8/158—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 by chemical means using active carbon
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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
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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
- F24F2110/30—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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
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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 bedside air supply device and method based on a displacement ventilation principle, and the bedside air supply device comprises a static pressure box, wherein the static pressure box is arranged on two sides of the head of a person, the upper part of the static pressure box is provided with an adjustable shutter air port, the static pressure box is connected with an air outlet of an air pipe, the other end of the air pipe is an air inlet, and a coarse filter is arranged on the air inlet; the static pressure case provides the new trend with the replacement ventilation mode, sets up the fan in the coarse filter rear end on the tuber pipe, and the rear end of fan sets up attemperator, attemperator is connected with the sensor electricity, and the sensor sets up in head of a bed or side wall, and is highly unanimous with human sleep for receive temperature signal, attemperator links to each other with the remote controller, and the remote controller is used for adjusting export wind speed, the new trend temperature in tripe wind gap. The invention can provide comfortable sleeping environment for people and achieve the effect of green and energy saving.
Description
Technical Field
The invention belongs to the technical field of air conditioning and refrigeration displacement ventilation, and particularly relates to a bedside air supply device and method based on a displacement ventilation principle.
Background
Most of products circulating in the market utilize an air conditioner with a sleep mode to improve the sleep environment, and a local air supply device is not provided. The principle of the method is that the noise of the air conditioner is reduced, and the air volume of the air conditioner is reduced, so that the air quality of the whole indoor environment in the sleep period is improved. One of the disadvantages is that the energy consumption is overlarge, and because the action range of the air conditioner is the whole indoor space, a large amount of excessive fresh air exists for the human body in sleep. Another drawback is that it is unable to realize personalized air supply, because the air quality is dynamically changed during different periods of sleep time, the air conditioner in a set state cannot ensure the air quality to continuously maintain a good state meeting the human body requirements; and the requirements for air quality after the human body state is changed during sleeping are different, so that the air supply device cannot adapt to the dynamic requirements of people, and a few air supply devices with monitoring functions are difficult to popularize due to higher cost.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a bedside air supply device and a bedside air supply method based on a replacement ventilation principle, which can provide a comfortable sleeping environment for personnel and achieve the effect of green and energy saving.
In order to achieve the purpose, the invention adopts the technical scheme that:
a bedside air supply device based on a displacement ventilation principle comprises a static pressure box 6, wherein the static pressure box 6 is installed on two sides of the head of a person, an adjustable louver air opening 4 is formed in the upper portion of the static pressure box 6, the static pressure box 6 is connected with an air outlet of an air pipe 3, the other end of the air pipe 3 is an air inlet, and a coarse filter is arranged on the air inlet;
The deflection angle of the adjustable louver air opening 4 is 0-90 degrees with the bed surface.
The temperature adjusting device 2 is internally provided with a medium-high efficiency filter and an active carbon filter screen for purifying PM and chemical pollutants in the air flow; the fan 1 and the temperature adjusting device arranged in the temperature adjusting device 2 control the outlet air speed and the outlet air temperature of the adjustable louver air opening 4.
The outlet air speed of the adjustable louver air port 4 is controlled to be below 0.3m/s, and the outlet air temperature is below 27 ℃.
A control method of a bedside air supply device based on a displacement ventilation principle comprises the following steps;
P＝14.439(t-t 0 -2)v (1)
in the formula: p-electric heater power
Further, when the outdoor temperature is high, the power of the thermostat 2 may be controlled according to the following control equation:
P＝14.439(t 0 -t 1 )v (2)
in the formula: t is t 1 -the person sets the temperature manually.
The automatic regulation and control strategy of the temperature regulation device 2 is as follows:
(1) through a feedback signal of the wind speed sensor, a power frequency converter in the fan 1 can automatically adjust the rotating speed of the fan, so that the wind speed of fresh wind is less than 0.3 m/s;
(2) when the temperature is lower, the temperature sensing element of the temperature sensor measures the temperature t of the bed head and the air temperature t of the air pipe 0 The wind speed sensor measures the wind speed v of the wind pipe, and the wind speed v is 14.439 (t-t) according to the formula P 0 -2) v, real-time adjustment of the electric heater power in the thermostat 2 to the resulting P value;
(3) when the temperature is high, the air supply temperature t is set by the user 1 The temperature sensing element of the temperature sensor measures the air temperature t of the air pipe 0 The wind speed sensor measures the wind speed v of the wind pipe, and the wind speed v is 14.439 (t) according to the formula P 0 -t 1 ) v, the electric heater power in the thermostat 2 is adjusted in real time to the resulting P value.
An operation method of a bedside air supply device based on a displacement ventilation principle comprises the following steps;
outdoor fresh air enters the fan 1 from the air pipe 3, most particles are filtered by the coarse filter arranged in front of the air pipe 3 and then enter the temperature adjusting device 2, the temperature adjusting device 2 is internally provided with a medium-high efficiency filter and an active carbon filter screen, and at the moment, pollutants in the fresh air are basically removed; then the electric heater in the temperature adjusting device 2 adjusts the temperature of the fresh air, and finally the fresh air is sent to two sides of the head of a person at an extremely low wind speed through the adjustable louver air opening 4 by the static pressure box 6;
the new trend of sending into is being close to the high evenly distributed in the bed, flow into whole human body afterwards, because human temperature is high and heated formation heat plume, the low updraft of hot air density, and form the detention layer in the upper space of human head, waste heat and the pollutant of the air of human head height are discharged from the detention layer, sensor 5 continuously monitors sleep microenvironment air quality during human sleep, temperature value and the interior pollutant concentration index of establishing according to remote controller 7 settlement control attemperator 2, carry out dynamic control to the new trend of sending into, realize that the sleep microenvironment continuously keeps the good condition, guarantee human sleep quality.
The invention has the beneficial effects that:
(1) the technology of the invention is based on the principle of displacement ventilation, and energy consumption can be greatly saved because the displacement ventilation only concerns the air quality of the human body region. According to the characteristics that the position of a human body is relatively fixed and is close to the bed plate during sleeping, fresh air processed by the temperature adjusting device is sent out from the shutter air port, the fresh air is directly sent to the position close to the human body sleeping on the bed, and the human body is brought into contact with the fresh air first, so that the air quality of a sleeping microenvironment is improved to a great extent. At the moment, the fresh air is heated by the human body heat source, the temperature rises, and a thermal plume (leading airflow flowing in indoor air) flows upwards around the human body, so that pollutants in a human body sleeping area are brought to the upper part of the whole room and separated from the human body sleeping area, and the aim of improving the air quality of a sleeping microenvironment is fulfilled. At the moment, the sensor arranged at the bed head continuously monitors the air quality of the sleeping microenvironment of the human body, and when the air does not meet the standard, the fresh air is processed by the temperature adjusting device through the control method to reach the standard and then is sent.
(2) The air supply speed of the air inlet of the device is extremely low, the air supply turbulence is low, the air speed in most areas of a working area can be guaranteed to be lower than 0.3m/s, no blowing feeling is generated, and the comfortable ventilation environment of a human body during sleeping is guaranteed; and fresh clean air is directly sent into the working area through the fresh air inlet, namely firstly passes through the human body breathing area, so that the human body breathing area can be ensured to be in a relatively clean air environment, and the air quality during sleeping is effectively improved.
(3) The air supply outlet of the device is positioned on the bed boards at two sides of the head of a person, so that the device is more concealed and beautiful, and the space characteristic and the building design are good in compatibility; compare in traditional total space mixed ventilation, this wind gap air supply position is more accurate, and the fresh air volume of steady operation is lower, small in noise, and the energy consumption is few, can realize the purpose of energy-conservation, and has better thermal comfort, can high-efficiently realize the improvement to human sleep microenvironment air quality.
(4) The comfortable and healthy fresh air environment of a breathing area is realized, the adjustable air supply speed and temperature are realized, and the individual requirements of users are met; when the outdoor temperature is lower, the device adjusts the fresh air temperature in real time through the sensor, and solves the inherent difficult problem of ventilation replacement in winter.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view (right side view) of the overall structure of the present invention.
Description of the drawings:
in the figure, a fan 1, an air handling unit 2, an air pipe 3, an adjustable louver opening 4, a sensor 5, a static pressure box 6 and a remote controller 7.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the present embodiment provides a bedside air supply device based on a displacement ventilation principle, which includes a blower 1, a temperature adjusting device 2, an air duct 3, an adjustable louver opening 4, a sensor 5, a static pressure box 6, and a remote controller 7. The user adjusts the wind speed by using the remote controller 7, and a signal is sent to the fan 1 to adjust the rotating speed of the fan 1, so that the wind speed of the air outlet is controlled; when the outdoor temperature is higher, the remote controller 7 is used for adjusting the temperature, and a signal is sent to the temperature adjusting device 2 to adjust the temperature of the supplied air; when the outdoor temperature is lower, the sensor 5 receives temperature and wind speed signals and sends the signals to the temperature adjusting device 2 to adjust the temperature of the supplied air; one end of the air pipe 3 is an air inlet, and the fan 1 is connected with the electric heater 2 and the static pressure box 6 by the air pipe 3; the static pressure box 6 is arranged at two sides of the head of a person and is provided with an adjustable louver opening 4.
The bedside air supply device based on the replacement ventilation principle provides a comfortable and healthy fresh air environment for a human breathing area, realizes adjustable air supply speed and temperature, and meets individual requirements; the air port is positioned in the bed, which is hidden and beautiful. When the temperature is lower, the temperature of the fresh air can be adjusted in real time through the sensor, and the inherent problem of replacement ventilation in winter is solved. The air port has lower air speed and lower energy consumption, low noise and high thermal comfort degree, and can meet the individual requirements of users.
In the embodiment of the invention, the bed is a standard large bed with the size of 2000mm multiplied by 1800mm, a temperature sensor is arranged 300mm above the bed head, two static pressure boxes and two adjustable louver air openings 4 are respectively arranged at two sides of the head of a person, and the air pipe 3 is hidden under the bed. The opening degree of the louver blades of the adjustable louver air opening 4 in the reference figure 1 can be adjusted, the deflection angle range is 0-90 degrees with the bed surface, the default is a 90-degree fully-opened state, and fresh air is directly sent into a breathing zone when a person lies through the adjustable louver air opening 4. The size of the adjustable louver opening 4 is 300mm multiplied by 10mm, and the requirement that the length-width ratio of the louver opening is larger than 10 is met; the louver blades of the slit louver air supply outlet are 5 in number and are respectively spaced by 30 mm. Illustratively, the outlet air speed of the louver air opening is controlled below 0.3m/s, and the outlet air temperature is generally below 27 ℃.
The size of the partitioned temperature control office table can be reduced or enlarged integrally and locally according to actual conditions on the premise of meeting requirements of fresh air supply parameters of a breathing zone of personnel and temperature comfort requirements under the table so as to meet different installation requirements.
The invention aims to provide fresh air with proper and moderate temperature, and achieves the temperature condition of replacement ventilation on the premise of providing warm fresh air as far as possible when the outdoor temperature is lower, so that the fresh degree and the proper degree of air are ensured simultaneously. Therefore, from the relationship between the motor efficiency, wind speed, temperature, and air specific heat capacity, we can obtain the following equation:
P＝14.439(t-t 0 -2)v
power of P-electric heater
Bed head temperature t, air pipe air temperature t 0 And the wind speed v of the wind pipe can be measured by a sensor and used as a regulating parameter. To ensure the integration of the human bodyComfort level can reach the equilibrium point of new trend temperature and air quality through the real-time closed-loop control new trend temperature of upper formula.
Further, when the outdoor temperature is high, the temperature and wind speed may be adjusted according to the following control equation:
P＝14.439(t 0 -t 1 )v
in the formula: t is t 1 -personnel manually set temperature
At higher outdoor temperatures, personnel have more than one requirement for the most comfortable indoor temperature, so t 1 The temperature is manually set for personnel, and the temperature is adjusted to meet the requirements of the personnel through man-machine interaction.
The automatic regulation and control strategy of the temperature regulation device 2 is as follows:
(1) through the feedback signal of the wind speed sensor, the power frequency converter in the fan 1 can automatically adjust the rotating speed of the fan 1, so that the wind speed of fresh wind is less than 0.3 m/s.
(2) When the temperature is lower, the temperature sensing element of the temperature sensor measures the air supply temperature of the bed head to measure t and t 0 V, P ═ 14.439 (t-t) 0 -2) v. The power of the electric heater in the thermostat 2 is adjusted in real time to the resulting P value.
(3) When the temperature is high, the air supply temperature t is set by the user 1 、t 0 V, P ═ 14.439 (t) 0 -t 1 ) v. The power of the electric heater in the thermostat 2 is adjusted in real time to the resulting P value.
According to the related manual, the fresh air G is 30m when an adult man is in a sleeping state 3 /h＝8.33×10 -3 m 3 /s
v s ＝G 1 /S (3)
S＝x·ds (4)
In the formula: v. of s The wind speed at the air supply opening of the louver is m/s;
G 1 -air output of one-side shutter air outlet, get G 1 ＝4.5m 3 /s>G/2；
S is the area of the air supply outlet of the single-side shutter;
x is the length of the louver air supply outlet, and x is 0.3 m;
ds is the width of the louver air supply outlet, and ds is 0.15 m.
Each term is substituted into formula (3) or formula (4) to obtain v s ＝0.1m/s。
The tail end adopts a louver opening 1, and the size is 300mm multiplied by 10 mm.
The wind ports are arranged on two sides of the bed head, so that the wind speed v can be adjusted s Regarded as 0.1 m/s. According to the design specification GB 50019-2015 of heating ventilation and air conditioning of industrial buildings in China, the average wind speed in a comfortable air-conditioning room in winter does not exceed 0.2m/s, according to verification, the design meets the specification, and the wind speed is low, so that the blowing sense can be reduced.
The invention provides a high-efficiency control method of the sleeping air quality on the basis of mastering the air pollutant migration characteristic of a sleeping microenvironment according to the dynamic requirement of the sleeping air quality, and develops a bedside personalized air supply device which can provide fresh air and can also purify the air so as to meet the control targets of different pollutants.
For the invention, how to send the fresh air to the breathing area of the human body for sleeping is important to reasonably adjust the air supply parameters to meet the requirements of people, and meanwhile, the fresh air system is combined with the building to enable all facilities in the room to achieve the effect of harmony and unity.
The invention has the following advantages: thermal comfort and good indoor air quality; the noise is small; the space characteristic and the building design are good in compatibility; the adaptability is strong, and the flexibility is high; low energy consumption, low initial investment and low operating cost. The local bedside air supply device developed based on the replacement ventilation principle can shorten the time of a room reaching the standard of healthy air and can quickly meet the requirement of thermal comfort of a user. Not only improves the local thermal environment, but also achieves the energy-saving goal because of reducing the air-conditioning range.
Claims (7)
1. A bedside air supply device based on a displacement ventilation principle is characterized by comprising static pressure boxes (6), wherein the static pressure boxes (6) are arranged on two sides of the head of a person, the upper parts of the static pressure boxes (6) are provided with adjustable louver air openings (4), the static pressure boxes (6) are connected with air outlets of air pipes (3), the other ends of the air pipes (3) are air inlets, and coarse filters are arranged on the air inlets;
static pressure case (6) provide the new trend with the replacement ventilation mode, and the coarse filter rear end on tuber pipe (3) sets up fan (1), and the rear end of fan (1) sets up attemperator (2), attemperator (2) are connected with sensor (5) electricity, and sensor (5) set up in head of a bed or side wall, and are highly uniform with human sleep for receive temperature signal, attemperator (2) link to each other with remote controller (7), and remote controller (7) are used for adjusting export wind speed, the new trend temperature in tripe wind gap 4.
2. The bedside air supply device based on the displacement ventilation principle as claimed in claim 1, wherein the deflection angle of the adjustable louver openings (4) is 0-90 ° with respect to the bed surface.
3. The bedside air supply device based on the displacement ventilation principle as claimed in claim 1, wherein the temperature adjusting device (2) is provided with a medium-high efficiency filter and an activated carbon filter screen for purifying PM and chemical pollutants in the supply air flow; the fan (1) and the temperature adjusting device arranged in the temperature adjusting device (2) control the outlet wind speed and the outlet wind temperature of the adjustable shutter air port (4).
4. The bedside air supply device based on the displacement ventilation principle as claimed in claim 1, wherein the outlet air speed of the adjustable louver opening (4) is controlled below 0.3m/s, and the outlet air temperature is below 27 ℃.
5. The control method of the bedside air supply device based on the displacement ventilation principle as claimed in any one of claims 1 to 4, comprising the steps of;
sensor (5) includes air velocity transducer and temperature sensor, temperature sensor sets up respectively in head of a bed top 300mm department and fan (1) end, air velocity transducer sets up at fan (1) end, measures head of a bed temperature t, tuber pipe air temperature t respectively 0 And wind speed v of wind pipe whenWhen the outdoor temperature is lower, the temperature adjusting device (2) is connected with the sensor (5) and controls the power of the temperature adjusting device according to the following control equation:
P＝14.439(t-t 0 -2)v (1)
in the formula: p-electric heater power
Further, when the outdoor temperature is high, the power of the temperature adjusting device (2) can be controlled according to the following control equation:
P＝14.439(t 0 -t 1 )v (2)
in the formula: t is t 1 -the person sets the temperature manually.
6. The control method of the bedside air supply device based on the displacement ventilation principle as claimed in claim 5, wherein the automatic regulation and control strategy of the temperature adjusting device (2) is as follows:
(1) through a feedback signal of the wind speed sensor, a power frequency converter in the fan (1) can automatically adjust the rotating speed of the fan, so that the wind speed of fresh wind is less than 0.3 m/s;
(2) when the temperature is lower, the temperature sensing element of the temperature sensor measures the temperature t of the bed head and the air temperature t of the air pipe 0 The wind speed sensor measures the wind speed v of the wind pipe, and the wind speed v is 14.439 (t-t) according to the formula P 0 -2) v, real-time adjustment of the electric heater power in the thermostat (2) to the resulting P-value;
(3) when the temperature is higher, the temperature t of the air in the air duct is measured by a temperature sensing element of a temperature sensor and the air supply temperature t2 set by a user 0 The wind speed sensor measures the wind speed v of the wind pipe, and the wind speed v is 14.439 (t) according to the formula P 0 -t 1 ) v, adjusting the power of the electric heater in the temperature adjusting device (2) to the obtained P value in real time.
7. The operation method of a bedside air supply device based on the displacement ventilation principle as claimed in any one of claims 1 to 4, comprising the steps of;
outdoor fresh air enters the fan (1) from the air pipe (3), most particles are filtered by a coarse filter arranged in front of the air pipe (3) and then enter the temperature adjusting device (2), and the temperature adjusting device (2) is internally provided with a medium-high efficiency filter and an active carbon filter screen, so that pollutants in the fresh air are basically removed; then an electric heater in the temperature adjusting device (2) adjusts the temperature of the fresh air, and finally the fresh air is sent to two sides of the head of a person at an extremely low wind speed through an adjustable shutter air port (4) by a static pressure box (6);
the new trend of sending into is being close to the high evenly distributed in the bed, flow into whole human body afterwards, because human temperature is high and by the heating formation heat plume, the low upflow of hot-air density, and form the detention layer in the upper space of human head, waste heat and the pollutant of the air of human head height are discharged from the detention layer, sensor (5) continuously monitor sleep microenvironment air quality during human sleep, temperature value and the interior pollutant concentration index of establishing according to remote controller (7) settlement come control attemperator (2), carry out the dynamic control to the new trend of sending into, realize that the sleep microenvironment continuously keeps the good condition, guarantee human sleep quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210584774.8A CN114992746A (en) | 2022-05-27 | 2022-05-27 | Bedside air supply device and method based on displacement ventilation principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210584774.8A CN114992746A (en) | 2022-05-27 | 2022-05-27 | Bedside air supply device and method based on displacement ventilation principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114992746A true CN114992746A (en) | 2022-09-02 |
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| CN202210584774.8A Pending CN114992746A (en) | 2022-05-27 | 2022-05-27 | Bedside air supply device and method based on displacement ventilation principle |
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| CN1628231A (en) * | 2002-02-08 | 2005-06-15 | 大金工业株式会社 | Sleeping capsule |
| JP2007215909A (en) * | 2006-02-20 | 2007-08-30 | Daikin Ind Ltd | Air conditioning system |
| TW200924671A (en) * | 2007-12-12 | 2009-06-16 | Ind Tech Res Inst | A sleep assist air conditioning method and apparatus integrating a bed and an air conditioner |
| CN102499538A (en) * | 2011-11-03 | 2012-06-20 | 上海交通大学 | Bed head air supply device capable of providing fresh air |
| CN103062871A (en) * | 2013-01-04 | 2013-04-24 | 上海交通大学 | Air conditioning control system on basis of skin temperatures of human bodies |
| CN203662364U (en) * | 2013-11-09 | 2014-06-25 | 刘毅清 | Air-conditioning bed |
| CN103968513A (en) * | 2014-04-28 | 2014-08-06 | 重庆大学 | Local air supply system based on bed |
| CN106880216A (en) * | 2017-03-16 | 2017-06-23 | 谢玉林 | A kind of air blowing type temp.-controlled bed |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1628231A (en) * | 2002-02-08 | 2005-06-15 | 大金工业株式会社 | Sleeping capsule |
| JP2007215909A (en) * | 2006-02-20 | 2007-08-30 | Daikin Ind Ltd | Air conditioning system |
| TW200924671A (en) * | 2007-12-12 | 2009-06-16 | Ind Tech Res Inst | A sleep assist air conditioning method and apparatus integrating a bed and an air conditioner |
| CN102499538A (en) * | 2011-11-03 | 2012-06-20 | 上海交通大学 | Bed head air supply device capable of providing fresh air |
| CN103062871A (en) * | 2013-01-04 | 2013-04-24 | 上海交通大学 | Air conditioning control system on basis of skin temperatures of human bodies |
| CN203662364U (en) * | 2013-11-09 | 2014-06-25 | 刘毅清 | Air-conditioning bed |
| CN103968513A (en) * | 2014-04-28 | 2014-08-06 | 重庆大学 | Local air supply system based on bed |
| CN106880216A (en) * | 2017-03-16 | 2017-06-23 | 谢玉林 | A kind of air blowing type temp.-controlled bed |
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