CN211977176U - Electric air valve and humidity-adjusting fresh air machine with same - Google Patents

Abstract

The utility model belongs to the field of new fans, in particular to an electric air valve and a new humidity-adjusting fan with the electric air valve, which comprises a motor arranged on one side of an air inlet of the new humidity-adjusting fan and a baffle plate connected with the motor, wherein the baffle plate is parallel to the air inlet, and the motor drives the baffle plate to rotate so as to realize the opening, closing or partial opening of the air inlet, the utility model comprises a motor and a baffle plate which are arranged on one side of the air inlet, the motor drives the baffle plate to rotate so as to realize the opening, closing or partial opening of the air inlet, when in an opening state, the whole body of the electric air valve does not influence the air inlet area of the air inlet, the air inlet of the air inlet with the largest area can be ensured, and because the baffle plate is arranged in parallel to the air inlet, the axial size required by the air inlet and the electric air valve, the cross section of the air inlet is not limited to be circular, and other figures can be adopted, so that the structural design of the humidity-adjusting fresh air fan is facilitated.

Description

Electric air valve and humidity-adjusting fresh air machine with same

Technical Field

The utility model belongs to new fan field specifically is to relate to an electronic blast gate and have new fan of humidifying of this electronic blast gate.

Background

With the improvement of living standard of people, the requirement of people on indoor air is higher and higher, a superior climatic environment is determined by 5 factors of air temperature, humidity, oxygen content, cleanliness, noise and the like, and in order to adjust the indoor environment, the unit needs to have 6 functions of fresh air, return air, purification, sterilization, humidification and dehumidification at the same time.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a be convenient for adjust, radial dimension is little and can not influence the electronic blast gate of air intake air inlet volume and have the new fan of humidifying of this electronic blast gate when opening the state.

The utility model discloses a content is including setting up the motor in humidifying new fan air intake one side and the baffle of being connected with the motor, the baffle is parallel with the air intake, and the motor drive baffle is rotatory to realize opening, closing or the part of air intake and open.

Furthermore, the baffle plate comprises a shielding part consistent with the cross section of the air inlet and a connecting part protruding from the shielding part and connected with the output shaft of the motor.

Furthermore, the distance from the axis of the motor to the axis of the circumcircle of the air inlet is equal to the distance from the axis of the motor to the axis of the circumcircle of the shielding part.

Furthermore, the shielding part is circular, and the air inlet is correspondingly circular.

The utility model discloses still including setting up the wind-guiding circle on the air intake, the wind-guiding circles and is provided with the guide way with the baffle coplane, the baffle rotates along the guide way.

Furthermore, the baffle is convexly provided with a limiting bulge matched with one side of the guide groove in an extending manner.

Further, the motor is disposed on the housing through a motor bracket.

Still further, the motor is a stepper motor.

The utility model provides a new fan of humidifying, includes the casing, and casing one end is provided with the air intake, and the other end is provided with the air outlet, is located to be formed with the wind channel between air intake and the air outlet in the casing, is provided with dehumidification subassembly, heating element, humidification subassembly and fan in the wind channel, be provided with electronic blast gate on the air intake.

Furthermore, the air inlet comprises a fresh air inlet and a return air inlet, and electric air valves are respectively arranged on the fresh air inlet and the return air inlet.

The beneficial effects of the utility model are that, the utility model discloses a motor and baffle that set up in air intake one side, the motor drive baffle is rotatory, can realize opening of air intake, close or the part is opened, when the open mode, the whole of electronic blast gate does not all influence the air inlet area of air intake, can guarantee the air intake with the biggest area air inlet, and because baffle and air intake parallel arrangement, very big reduction the required axial dimension of air intake and electronic blast gate, be convenient for the structural design of the new fan of humidifying, and simultaneously, adopt the setting of motor and baffle, make the cross sectional shape of air intake not confine to circularly, can also adopt the rectangle, oval or other irregular figure, more do benefit to the structural design of the new fan of humidifying, reduce the restriction requirement of the new fan design of humidifying.

In order to ensure that the baffle can be tightly matched with the air inlet when the air inlet is in a closed state and no redundant material is provided, and the burden of the motor is increased, the baffle comprises a shielding part which is consistent with the section of the air inlet. The motor is characterized by further comprising a connecting part which protrudes from the shielding part and is connected with an output shaft of the motor, and the distance from the axis of the motor to the axis of the circumscribed circle of the air inlet is equal to the distance from the axis of the motor to the axis of the circumscribed circle of the shielding part, so that the motor controls the shielding part to rotate, the shielding part can be exactly tightly matched with the air inlet, and the sealing effect of the air inlet in a closed state is ensured.

The utility model discloses a shielding part is circular, and the air intake correspondence is circular, more does benefit to the intake when control and measurement part open.

The air guide ring is arranged, the baffle plate rotates along the guide groove, the rotating parallelism of the baffle plate can be improved firstly, the baffle plate is prevented from being not sealed with the air inlet, and the baffle plate can bear the radial force of the air inlet when in a partially opened state and is born by the guide groove to prevent the baffle plate from being bent.

Be provided with on the baffle with guide way one side complex spacing arch, provide the limit turned angle of motor, avoid motor turned angle too big, make this baffle of closing open through changing into the part from the opposite side, spacing arch can hold the radial power that receives the air intake as the baffle when the closed condition simultaneously, prevents that the baffle from bending.

The motor is arranged on the shell through the motor support and is convenient to mount and dismount, and the motor is a stepping motor and is convenient to control the rotating angle.

The utility model also provides a new fan of humidifying with this electronic blast gate, the size of the new fan air intake air inlet of humidifying of being convenient for, its electronic blast gate installation required space is little simultaneously, and the structural dimension who guarantees the new fan of humidifying is little.

The fresh air inlet and the return air inlet are arranged, and the electric air valves are arranged on the fresh air inlet and the return air inlet, so that the ratio of the air inlet volume of the air inlet to the air inlet volume of the return air inlet can be conveniently adjusted.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a right side view of the present invention.

Fig. 3 is a front view of the present invention.

Fig. 4 is an exploded view of the present invention.

Fig. 5 is a schematic view of the air duct of the present invention.

Fig. 6 is a schematic structural view of the front panel removed in the present invention.

Fig. 7 is a schematic view of the structure of the middle moisture film of the present invention.

Fig. 8 is a schematic structural view of the middle electric air valve of the present invention.

Fig. 9 is a schematic structural view of the middle baffle of the present invention.

Fig. 10 is a schematic structural view of the middle wind guiding ring of the present invention.

Fig. 11 is a schematic structural view of the water collecting mechanism of the present invention.

In the figure, 1, a housing; 101. an air inlet; 1011. a fresh air port; 1012. an air return opening; 1013. a wind guide ring; 1014. a guide groove; 102. an air outlet; 103. a front panel; 104. a back plate; 105. a base plate; 106. an upper cover; 2. a dehumidification assembly; 201. A compressor; 202. an evaporator; 203. a reheat condenser; 204. a sound-proof housing; 2041. a front baffle; 2042. a rear sound insulation plate; 205. a heat exchanger top baffle; 3. a heating assembly; 4. a humidifying assembly; 401. wet film forming; 4011. a wet film water inlet; 402. a water pipe; 4021. a water outlet pipe of the water pump; 4022. a water inlet pipe of a water pump; 5. a fan; 501. a fan fixing plate; 6. a screen assembly; 601. a high-efficiency filter screen; 602. a middle-effect filter screen; 603. a nylon filter screen; 7. a water pump; 8. a water collection assembly; 801. a water tank; 8011. a water supply quick plug; 8012. an O-shaped sealing ring; 8013. a hose; 8014. a quick plug for draining water; 802. a water tank mounting groove; 8021. a water supply quick connector; 8022. a quick connector for draining water; 8023. a drain pipe joint; 803. a water tank drain pipe; 9. an electric air valve; 901. a motor; 902. a baffle plate; 9021. a limiting bulge; 903. a motor bracket; 10. sterilizing the ultraviolet lamp; 11. a partition plate; 1101. a drain pipe; 12. an air duct.

Detailed Description

As shown in fig. 1-11, the utility model comprises a housing 1, the housing 1 comprises a back plate 104 with a cross section of "" and an upper cover 106 and a bottom plate 105 which are arranged at the upper and lower ends of the back plate 104 and a front plate 103 which is detachably matched with the two sides of the back plate 104, wherein, the upper cover 106 of the housing 1 is provided with an air outlet 102, the lower side of the back plate 104 of the housing 1 is provided with an air inlet 101, the air inlet 101 comprises a fresh air inlet 1011 which is arranged at one side of the back plate 104 opposite to the front plate 103 and a return air inlet 1012 which is arranged at the two sides of the back plate 104, an air duct 12 is formed between the air inlet 101 and the air outlet 102 in the housing 1, the air duct 12 is provided with a dehumidifying component 2, a heating component 3, a humidifying component 4 and a fan 5 in sequence from one side of the air inlet 101 to one side of the air outlet 102, a partition plate 11 is arranged in the, wherein, the dehumidification component 2 comprises a compressor 201, an evaporator 202, a capillary tube and a reheat condenser 203 which form a closed loop, the evaporator 202 and the reheat condenser 203 are sequentially and vertically arranged on a partition plate 11, the reheat condenser 203 is arranged near one side of a heating component 3, the partition plate 11 is disc-shaped, a drain pipe 1101 is arranged on the partition plate 11 and used for discharging condensed water generated by fresh air dehumidification through the evaporator 202, the heating component 3 is an electric heater, the humidification component 4 comprises a wet film 401 and a water pipe 402 connected with a wet film water inlet 4011 at the top of the wet film 401, a water pump 7 is arranged on the water pipe 402, a water collection component 8 is arranged at the bottom of the shell 1, the input end of the water pump 7 is connected with the water collection component 8, specifically, the water pipe 402 comprises a water pump water outlet pipe 4021 connected with the wet film water inlet 4011 and the water pump 7 output end, and a water pump water inlet pipe 4022 connected, wherein, the water drainage pipe 1101 on the clapboard 11 is communicated with the water collection assembly 8 and is used for recycling, and the utilization rate of water is improved. Be provided with filter screen subassembly 6 between air intake 101 and the dehumidification subassembly 2 and/or between fan 5 and the air outlet 102, filter screen subassembly 6 slides and sets up in casing 1 and perpendicular with front panel 103, in this embodiment, has set gradually nylon filter screen 603 and imitate filter screen 602 between air intake 101 and the dehumidification subassembly 2, is provided with high-efficient filter screen 601 between fan 5 and the air outlet 102, carries out multiple filtration to the air.

As shown in fig. 6, the detachable front panel 103, the filter screen assembly 6, the humidifying assembly 4, the fan 5 and other devices of the utility model can be directly overhauled and replaced after the front panel 103 is detached, the machine set is very convenient to overhaul and maintain, the maintenance difficulty of maintainers is greatly reduced, the maintenance efficiency is improved, and meanwhile, the dehumidification, the humidification and the purification are integrated to meet various requirements; meanwhile, the whole layout is reasonable and the structure is compact.

As shown in fig. 5, in order to smoothly discharge the fresh air entering from the air inlet 101 through the air outlet 102, a gap is left between the side of the partition 11 away from the front panel 103 and the housing 1, the gap forms an air duct 12 from the air inlet 101 to the dehumidifying module 2, a heat exchanger top partition 205 is disposed on the top of the evaporator 202 and the reheat condenser 203 to prevent the air from directly passing from the top to the fan 5, and a gap is left between the side of the humidifying module 4 close to the front panel 103 and the front panel 103, and the gap forms the air duct 12 between the humidifying module 4 and the fan 5.

In order to improve the efficiency of the fan 5, the axis of the fan 5 is perpendicular to the filter screen assembly 6, in this embodiment, the fan 5 is disposed on the rear plate 104 through the fan fixing plate 501, the high-efficiency filter screen 601 is disposed between the fan 5 and the air outlet 102, and the high-efficiency filter screen 601 and the fan fixing plate 501 form a silencing cavity, so that the noise of the unit is effectively reduced.

As shown in fig. 4, the compressor 201 is disposed at the bottom of the casing 1, the sound-proof housing 204 is disposed outside the compressor 201, the sound-proof housing 204 includes a front sound-proof plate 2041 disposed above the water tank mounting groove 802 and a rear sound-proof plate 2042 cooperating with the front sound-proof plate 2041 to enclose the compressor 201, and the sound-proof housing 204 is disposed to reduce the operating noise of the compressor 201.

A sterilization ultraviolet lamp 10 is arranged between the humidification component 4 and the fan 5, and the dehumidified or humidified fresh air is sterilized by the sterilization ultraviolet lamp 10.

As shown in fig. 11, the water collecting module 8 of the present invention includes a water tank 801 and a water tank mounting groove 802, the water tank mounting groove 802 is disposed on the bottom plate 105, the water tank 801 is slidably disposed in the water tank mounting groove 802, wherein the water tank 801 is a tank body having an open top, after the water tank 801 slides into the water tank mounting groove 802, the top of the water tank mounting groove 802 blocks the open top of the water tank 801 to prevent foreign matters from entering the water tank 801, a water supply quick connector 8011 is disposed on a side of the water tank 801 close to the water tank mounting groove 802, a water supply quick connector 8021 is disposed at a position corresponding to the water tank mounting groove 802, after the water tank 801 is mounted in the water tank mounting groove 802, the water supply quick connector 8011 is engaged with the water supply quick connector 8021, wherein the water supply quick connector 8021 is connected to a hose 8013, the hose 8013 extends into the bottom of the water tank, as shown, and wet membrane water inlet 4011 through water pump outlet pipe 4021 and wet membrane 401 is connected, the membrane 401 that wets supplies water, wherein, be provided with O type sealing washer 8012 on the quick plug 8011 that supplies water, make to have sealed effect after the butt joint, the utility model discloses set up water tank 801 and water tank mounting groove 802, and the butt joint of water tank 801 and humidification subassembly 4 of being convenient for, simplify the installation degree of difficulty, it is as an organic whole with water tank mounting groove 802 after the butt joint, can not influence the pleasing to the eye of the new fan of humidifying, water tank 801 has the opening simultaneously, be convenient for carry out manual water addition to water tank 801 fast, shorten the time of adding water, and the top of water tank mounting groove 802 covers water tank 801 opening as water tank 801 after the installation, can prevent.

The quick water supply plug 8011 is arranged on the upper side of the front plate of the water tank 801 and is connected with the bottom of the water tank 801 through the hose 8013, so that the water can be prevented from running off from the quick water supply plug 8011 due to the separation of the quick water supply plug 8011 and the quick water supply connector 8021 in the water adding process, and the water containing volume of the water tank 801 is improved.

As shown in fig. 11 and 2, the water tank installation groove 802 is further provided with a water drainage pipe connector 8023 communicated with the water drainage pipe 1101, and the water drainage pipe connector 8023 penetrates through the top of the water tank installation groove 802, so that condensed water generated in the dehumidification process and excessive water generated in the humidification mode, which are received by the partition board 11, directly flow to the water tank 801 for recycling, and the utilization rate of water is effectively improved.

The upper ends of the water tank 801 and the water tank mounting groove 802 are respectively provided with a drainage quick plug 8014 and a drainage quick connector 8022, after the water tank 801 is filled with condensed water generated in a dehumidification mode, the condensed water can be discharged out of the humidity-adjusting fresh air machine through the drainage quick plug 8014 and the drainage quick connector 8022, an automatic discharge function is achieved, meanwhile, the drainage quick plug 8014 and the drainage quick connector 8022 can also be connected with an external water source through a water tank drain pipe 803, water is conveyed to the water tank 801, and an automatic water replenishing function and an automatic water drainage function of the water tank 801 are provided.

The quick water supply plug 8011 is flush with the quick water drainage plug 8014, so that the water tank 801 and the water tank mounting groove 802 can be conveniently produced, the quick water supply plug 8011 and the quick water drainage plug 8014 are symmetrically arranged left and right, and functions of the plug and the connector can be conveniently exchanged to adapt to structures of different humidity-adjusting fresh air fans.

The water tank mounting groove 802 both sides are provided with spacing step, water tank 801 corresponds both sides and is provided with spacing lug, simplifies the butt joint degree of difficulty, prevents excessive insertion, leads to plug and joint collision damage.

The water tank mounting groove 802 is consistent with the cross-sectional shape of the water tank 801, the structure is compact after the cooperation is ensured, waste of redundant space is avoided, and after the water tank slides into the water tank mounting groove 802, the top of the water tank mounting groove 802 better covers the opening of the water tank.

A liquid level sensor switch is further provided in the water tank 801, when the liquid level inside the water tank 801 is too low in the humidification mode, a lower limit liquid level switch inside the water tank 801 is triggered, and when the liquid level inside the water tank 801 is too high in the dehumidification mode, an upper limit liquid level switch inside the water tank 801 is triggered; the water tank 801 has two modes of manual operation and automatic operation for water drainage and water adding, the manual mode needs to take out the water tank 801 to carry out water adding and water pouring operations, the automatic mode is connected to the external pipeline to the water tank 801, meanwhile, an electromagnetic valve is installed on the external pipeline and is connected to a unit to control, when water is short, the unit opens the water adding electromagnetic valve to add water, and when the water is full, the unit opens the water drainage electromagnetic valve to carry out water drainage operations.

As shown in fig. 8-10, the utility model is provided with the electric air valves 9 on the fresh air inlet 1011 and the return air inlet 1012, the corresponding air valve opening degree of the two electric air valves 9 can be passed, thereby realizing the adjustment of the fresh air quantity and the return air quantity, wherein, the electric air valve 9 comprises a motor 901 arranged on one side of the air inlet 101, a baffle 902 arranged on the motor 901, the cross-sectional shape of the baffle 902 is consistent with the cross-sectional shape of the air inlet 101, and the baffle 902 is arranged in parallel with the air inlet 101, the motor 901 drives the baffle 902 to rotate, so as to control the opening, closing or partial opening of the air inlet 101, when in the open state, the whole of the electric air valve 9 does not influence the air inlet area of the air inlet 101, it can be ensured that the air inlet 101 enters the air with the largest area, and because the baffle 902 is arranged in parallel with the air inlet 101, the structural design of the humidity-adjusting fresh air fan is facilitated, and meanwhile, due to the arrangement of the motor 901 and the baffle 902, the cross section of the air inlet 101 is not limited to be circular, and can also be rectangular, elliptical or other irregular figures, so that the structural design of the humidity-adjusting fresh air fan is facilitated, and the limitation requirement on the design of the humidity-adjusting fresh air fan is lowered.

In order to enable the baffle 902 to be tightly fitted with the air inlet 101 when the air inlet 101 is in a closed state, and no extra material is provided, so as to increase the load of the motor 901, the baffle 902 includes a shielding portion having a cross section consistent with that of the air inlet 101. The air inlet device also comprises a connecting part which protrudes from the shielding part and is connected with an output shaft of the motor 901, and the distance from the axis of the motor 901 to the axis of the circumscribed circle of the air inlet 101 is equal to the distance from the axis of the motor 901 to the axis of the circumscribed circle of the shielding part, so that the motor 901 controls the shielding part to rotate, the shielding part can be exactly matched with the air inlet 101 tightly, and the sealing effect of the air inlet 101 in a closed state is ensured.

The utility model discloses a shielding part is circular, and air intake 101 corresponds for circular, more does benefit to the intake when control and measurement part open.

In this embodiment, the air inlet 101 is provided with an air guiding ring 1013, the air guiding ring 1013 is provided with a guiding groove 1014 corresponding to the baffle 902, and the baffle 902 rotates along the guiding groove 1014, so that firstly, the rotation parallelism of the baffle 902 can be improved, the baffle 902 is prevented from being unsealed with the air inlet 101, and when the baffle 902 is in a partially opened state, the baffle 902 is subjected to a radial force of the air inlet 101 and is borne by the guiding groove 1014, so as to prevent the baffle 902 from being bent. The limit protrusion 9021 matched with the guide groove 1014 is arranged on the baffle 902, so that the limit rotation angle of the motor 901 is provided, the overlarge rotation angle of the motor 901 is avoided, the closed baffle 902 is partially opened from the other side, and meanwhile, when the limit protrusion 9021 is in a closed state, the radial force of the air inlet 101 on the baffle 902 can be borne, and the baffle 902 is prevented from being bent.

The motor 901 is a stepping motor, which facilitates control of a rotation angle. The motor 901 is arranged on the rear plate 104 through a motor support 903, so that the mounting and the dismounting are convenient, and the motor support 903 is preferably a sheet metal bending part.

The utility model discloses a concrete theory of operation:

the utility model discloses a filter screen subassembly 6, dehumidification subassembly 2, heating element 3, humidification subassembly 4 and fan 5, ultraviolet lamp 10 and fresh air inlet 1011 and return air inlet 1012 disinfect provide new trend, return air, purification, humidification, dehumidification and six major functions of disinfecting, and cooperation control system can realize that full new trend purifies the mode of disinfecting, the full return air purifies the mode of disinfecting, divides the five major modes of purifying and disinfecting mode, dehumidification mode, humidification mode thoughtlessly, specifically as follows:

the full fresh air purification and sterilization mode is as follows: starting a fan 5, opening a fresh air inlet 1011 through an electric air valve 9, closing an air return inlet 1012, opening a sterilizing ultraviolet lamp 10, filtering fresh air sequentially through the fresh air inlet 1011, a nylon filter screen 603 and a medium-efficiency filter screen 602, sterilizing through the sterilizing ultraviolet lamp 10, filtering through a high-efficiency filter screen 601, and then sending the fresh air into a room from an air outlet 102 at the top of an upper cover 106; at this time, the fresh air blower can detect the temperature and humidity of the air inlet 102 in real time, when the indoor humidity is greater than a set value, the dehumidifying component 2 is automatically started, the dehumidification is stopped when the humidity meets the requirement, when the indoor humidity is lower than the set value, the humidifying component 4 is automatically started, and the humidification is stopped when the humidity meets the requirement.

The full return air purification sterilization mode is as follows: starting a fan 5, opening an air return port 1012 through an electric air valve 9, closing a fresh air port 1011, opening a sterilizing ultraviolet lamp 10, filtering fresh air sequentially through the fresh air port 1011, a nylon filter screen 603 and a medium-efficiency filter screen 602, sterilizing through the sterilizing ultraviolet lamp 10, filtering through a high-efficiency filter screen 601, and then sending the fresh air into a room from an air outlet 102 at the top of an upper cover 106; at this time, the fresh air blower can detect the temperature and humidity of the air inlet 102 in real time, when the indoor humidity is greater than a set value, the dehumidifying component 2 is automatically started, the dehumidification is stopped when the humidity meets the requirement, when the indoor humidity is lower than the set value, the humidifying component 4 is automatically started, and the humidification is stopped when the humidity meets the requirement.

A mixed purification sterilization mode: starting a fan 5, opening a return air inlet 1012 and a fresh air inlet 1011 through an electric air valve 9, opening a sterilizing ultraviolet lamp 10, filtering fresh air and return air through the fresh air inlet 1011, a nylon filter screen 603 and a medium-efficiency filter screen 602 in sequence, sterilizing through the sterilizing ultraviolet lamp 10, filtering through a high-efficiency filter screen 601, and then sending the air into a room from an air outlet 102 at the top of an upper cover 106; at the moment, a sensor at the position of the air outlet 102 of the unit detects the concentration of carbon dioxide and the PM2.5 value in a room in real time and feeds the concentration and the PM2.5 value back to the control system, and the control system calculates and adjusts the opening degrees of electric air valves 9 corresponding to a fresh air inlet 1011 and a return air inlet 1012, so that the adjustment of the fresh air quantity and the return air quantity is realized; at the moment, the unit can detect the temperature and the humidity of the air inlet 102 in real time, when the indoor humidity is greater than a set value, the dehumidifying component 2 is automatically started, the dehumidification is stopped when the humidity meets the requirement, when the indoor humidity is lower than the set value, the humidifying component 4 is automatically started, and the humidification is stopped when the humidity meets the requirement.

A dehumidification mode: starting a fan 5, opening a return air inlet 1012 through an electric air valve 9, closing a fresh air inlet 1011, opening a sterilizing ultraviolet lamp 10 and a dehumidifying component 2, filtering return air through a nylon filter screen 603 and a medium-efficiency filter screen 602, then entering an evaporator 202 to generate condensed water when cooled, then heating the condensed water to a set temperature requirement through a reheating condenser 203, discharging the condensed water to a disc-shaped partition plate 11, then flowing into a water tank 801 through a water discharge pipe 1101 of the partition plate 11, filtering dry air through the sterilizing ultraviolet lamp 10, then filtering the air through a high-efficiency filter screen 601, and then sending the air into a room from an air outlet 102 at the top of an upper cover 106; the indoor air is continuously circulated to separate out moisture, thereby realizing the dehumidification of the air.

In the humidification mode: starting a fan 5, opening a return air inlet 1012 and a fresh air inlet 1011 through an electric air valve 9, opening a sterilizing ultraviolet lamp 10 and a humidifying assembly 4, filtering fresh air and return air through the fresh air inlet 1011, a nylon filter screen 603 and a middle filter screen 602 in sequence, adjusting the temperature through a heating assembly 3, humidifying through a wet film 401, sterilizing through the sterilizing ultraviolet lamp 10 and filtering through a high-efficiency filter screen 601, and sending the humidified and temperature-adjusted clean air into a room from an air outlet 102 at the top of an upper cover 106; the opening, closing and increasing and decreasing amount of the heating component 3 are controlled according to the detected air outlet temperature; at the moment, the sensor at the position of the air outlet 102 of the fresh air fan detects the concentration of carbon dioxide and the PM2.5 value in a room in real time and feeds the values back to the control system, and the control system calculates and adjusts the corresponding opening degree of the air valve, so that the adjustment of the fresh air quantity and the return air quantity is realized. In the humidification mode, the water pump 7 sucks water in the water tank 801 out and sends the water to a water inlet at the top of the wet film 401, the water which is not evaporated enters the disc-shaped partition plate 11 from the bottom of the wet film 401, and then the water drainage pipe 1101 flows into the water tank 801 for recycling, so that the water utilization rate is effectively improved.

Claims (10)

1. An electric air valve is characterized by comprising a motor (901) arranged on one side of an air inlet (101) of a humidity-adjusting fresh air fan and a baffle (902) connected with the motor (901), wherein the baffle (902) is parallel to the air inlet (101), and the motor (901) drives the baffle (902) to rotate so as to realize the opening, closing or partial opening of the air inlet (101).

2. An electric air valve as claimed in claim 1, wherein the baffle (902) comprises a shielding portion having the same cross section as the air inlet (101) and a connecting portion protruding from the shielding portion and connected to the output shaft of the motor (901).

3. The electric air valve as claimed in claim 2, wherein the distance from the axis of the motor (901) to the axis of the circumcircle of the air inlet (101) is equal to the distance from the axis of the motor (901) to the axis of the circumcircle of the shielding portion.

4. An electric air valve according to claim 3, characterized in that the shielding part is circular and the air inlet (101) is correspondingly circular.

5. The electric air valve as claimed in any one of claims 1-3, further comprising an air guiding ring (1013) disposed on the air inlet (101), wherein the air guiding ring (1013) is provided with a guiding groove (1014) coplanar with the baffle (902), and the baffle (902) rotates along the guiding groove (1014).

6. The electric air valve as claimed in claim 5, wherein the baffle (902) is protrudingly provided with a limit protrusion (9021) engaged with one side of the guide groove (1014).

7. An electric air valve according to claim 1, characterized in that the motor (901) is arranged on the housing (1) by means of a motor holder (903).

8. The electric air valve as claimed in claim 1, wherein said motor (901) is a step motor.

9. A humidity-adjusting fresh air fan is characterized by comprising a shell (1), wherein one end of the shell (1) is provided with an air inlet (101), the other end of the shell is provided with an air outlet (102), an air duct (12) is formed in the shell (1) and positioned between the air inlet (101) and the air outlet (102), a dehumidifying component (2), a heating component (3), a humidifying component (4) and a fan (5) are arranged in the air duct (12), and the air inlet (101) is provided with an electric air valve according to any one of claims 1-8.

10. The humidity-regulating fresh air blower according to claim 9, wherein the air inlet (101) comprises a fresh air inlet (1011) and a return air inlet (1012), and the fresh air inlet (1011) and the return air inlet (1012) are respectively provided with an electric air valve (9).

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