TWI828083B - air purifier - Google Patents

Abstract

Air conditioners, air purifiers and dehumidifying air purifiers include: filter air duct, where the air sucked in from the suction port passes through the air purifying filter and then reaches the evaporator; bypass air duct, where the air sucked in from the suction port It reaches the evaporator without passing through the air purification filter; the opening and closing means can adjust the opening of the bypass passage; the timer is the accumulated operating time of the air supply means; and the control means is based on the opening and operating time of the opening and closing means. Informs you of the time to replace or clean the air purifying filter.

Description

air purifier

This disclosure relates to an air conditioner, an air purifier and a dehumidifying air purifier.

The air conditioner disclosed in the above-mentioned Patent Document 1 has: a frame with an air suction inlet and a blowout outlet; an air filter inside the frame; a heat exchanger; an indoor fan for air supply; and a ventilation path. An air filter, a heat exchanger and an indoor fan for air supply are arranged in order in the direction of air circulation; a shielding plate is driven to open or shield the suction inlet; a driving means is to drive the shielding plate; and a control means; the air conditioner is equipped with an air supply Use the running time accumulation timer of the indoor fan to control the shielding panel when the fixed time is reached. When the operation is stopped, the shielding plate covers the suction inlet and stops. However, when the cumulative timer reaches the predetermined value, the shielding plate is stopped while still open, and the user is notified of the necessity of cleaning the air filter. .

[Prior patent documents]

[Patent Document]

[Patent Document 1] Japanese Patent Application Publication No. 10-78253

In the air conditioner of Patent Document 1, all air flowing into the heat exchanger must always pass through the air filter. Therefore, there are the following problems: when the necessity of purifying the air is low, the pressure loss in the air path is large, the power consumption of the fan is large, and energy-saving operation cannot be performed.

The present disclosure was developed to solve the above-mentioned problems, and its purpose is to provide an air conditioner, an air purifier, and a dehumidifying air purifier that perform energy-saving operation. It is advantageous to have both the advantages of accurately notifying the user of the timing of replacing or cleaning the air purifying filter.

The air conditioner, air purifier and dehumidifying air purifier disclosed in the present disclosure include: a frame having an inlet and a blowout outlet; an air purifying filter arranged inside the frame; and an air supply means arranged inside the frame. inside the body and generates air flow from the suction inlet to the blowout outlet; the evaporator and condenser are arranged inside the frame; the filter air path is where the air sucked in from the suction inlet passes through the air purification filter. reaches the evaporator; the bypass passage is the air sucked in from the suction port to reach the evaporator without passing through the air purification filter; the opening and closing means are the adjustable opening of the bypass passage; the timer is the cumulative operation time of the air supply means ; and the control means, which notify the timing of replacing or cleaning the air purifying filter based on the opening and operating time of the opening and closing means.

According to this disclosure, it is possible to provide an air conditioner, an air purifier and a dehumidifying air purifier that perform energy-saving operation and correctly notify the user of replacement or cleaning of the air purifier. The timing of both filters becomes advantageous.

Hereinafter, embodiments will be described with reference to the drawings. In each drawing, common or corresponding components are assigned the same symbols, and descriptions thereof are simplified or omitted. In addition, when the angle is mentioned in this disclosure, when there is an angle and becomes a major angle and a minor angle of 360°, it refers to the angle of the minor angle in principle, and when there is an angle and when it becomes an acute angle and an obtuse angle of 180°, it means the angle of the minor angle. In principle, it refers to the angle of an acute angle. Embodiment 1

Fig. 1 is a rear view of the dehumidifying air purifier 1 according to the first embodiment. FIG. 2 is a cross-sectional side view of the dehumidifying air purifier 1 according to Embodiment 1 taken along line A=A in FIG. 1 . FIG. 3 is a cross-sectional plan view of the dehumidifying air purifier 1 of Embodiment 1 taken along line B=B in FIG. 1 . In this disclosure, in principle, the dehumidifying air purifier 1 is explained based on the state in which the dehumidifying air purifier 1 is placed on a horizontal surface.

In addition, in this embodiment, the structure of the dehumidifying air purifier 1 is described as an example. The dehumidifying air purifier 1 is a dehumidifying air purifier that has both a dehumidifying function and an air purifying function. However, the technical concept of the present disclosure is also Can be used in air conditioners or air purifiers. For example, the air conditioner or air purifier of the present disclosure may heat or cool the air through a heat exchanger through which the refrigerant passes, thereby enabling heating operation or cooling operation. Furthermore, the air conditioner or air purifier of the present disclosure may not perform dehumidification operation, or may not have dehumidification means.

The dehumidification air purifier series 1 is equipped with a box 10. The box 10 is an example of a frame forming the outer shell of the dehumidifying air purifier 1 . The box 10 is, for example, formed into a self-supporting box shape. Wheels 20 for moving the dehumidifying air purifier 1 can also be provided at the bottom of the box 10 .

In Embodiment 1, the box 10 has a front box 10a and a rear box 10b. The front box 10a is a member that forms the front portion of the box 10. The back box 10b is a member forming the back part of the box 10. The rear box 10b is fixed to the front box 10a by, for example, screws.

The box 10 is formed with a suction port 11 and a blower port 12 . The suction port 11 is an opening for taking in air from the outside to the inside of the box 10 . The air outlet 12 is an opening for sending air from the inside of the box 10 to the outside. In Embodiment 1, the suction port 11 is formed in the back part of the box 10 . The suction port 11 is formed in the rear box 10b. Moreover, in Embodiment 1, the blower outlet 12 is formed in the upper surface part of the box 10.

The dehumidifying air purifier 1 is provided with the suction inlet cover 11a which covers the suction inlet 11. The suction inlet cover 11a is formed in a mesh shape, for example. This suction port cover 11a prevents foreign matter from intruding into the inside of the box 10 through the suction port 11. The suction inlet cover 11a is formed to be detachable from the rear box 10b, for example.

The dehumidification air purifier 1 has control means to control its action. In the example shown in the figure, a circuit board box 16 is disposed in the back box 10b, and houses a control circuit board (not shown) and a power supply circuit board (not shown) that correspond to control means.

Moreover, the dehumidification air purifier 1 series is equipped with the shutter 13. The shutter 13 is composed of plate-shaped components. The louver 13 is used to adjust the direction of the air sent out from the blower outlet 12 . The louver 13 is arranged near the blower outlet 12 . The shutter 13 is connected to a shutter driving motor (illustration omitted). When the shutter driving motor operates, the position of the shutter 13 is changed. The direction of the air sent out from the air outlet 12 is adjusted by controlling the shutter driving motor through the control means.

In addition, the dehumidifying air cleaner 1 is provided with an operation display unit 15 . The operation display part 15 is used by the user to operate the dehumidification air purifier 1 . In addition, the operation display unit 15 displays the status of the dehumidifying air purifier 1 to the user. Inside the box 10 facing the operation display unit 15, an operation display substrate 15a is arranged, which controls the operation display unit 15. The operation display substrate 15a is provided with an operation switch, an operation mode switching switch, a liquid crystal display unit, and the like. The operation switch starts/stops the operation of the dehumidifying air purifier 1. The operation mode switching switch switches the operation mode to the dehumidification operation. mode, air purifying operation mode, or dehumidifying air purifying operation mode. The user operates the dehumidifying air purifier 1 via the operation display unit 15 . The operation display unit 15 displays the status of the dehumidifying air purifier 1 and the like. The operation display board 15a is arranged in the back box 10b.

In this disclosure, a user interface (illustration omitted) that is separate from the dehumidification air purifier 1 can also be used. Hereinafter, this kind of user interface is called "other user interface". Other user interface systems can also be used, such as smart phones, smart speakers, TVs, etc. It can also control means to communicate wirelessly with other user interfaces. It can also control means to communicate with other user interfaces through the network or local area network. In the following, an example in which the control means uses the operation display unit 15 to notify the user of information is mainly explained. However, in this disclosure, the operation display unit 15 may be replaced, or the control unit may be used in addition to the operation display unit 15. The user interface notifies the user of information. In addition, the user can also use other user interfaces to operate the dehumidifying air purifier 1 .

The dehumidifying air purifier 1 is equipped with a fan 21 as a means of supplying air. The fan 21 is a device that takes in air into the inside of the box 10 and sends the taken in air out of the box 10 . The fan 21 is housed inside the box 10 . The fan 21 is a device that generates an air flow from the suction port 11 to the blower port 12 in the air path from the suction port 11 to the blower port 12 .

Inside the box 10, the motor 21a is accommodated. The motor 21a is a device that rotates the fan 21. In Embodiment 1, the fan 21 and the motor 21a are arranged in the front box 10a. That is, the fan 21 and the motor 21a are arranged on the front side of the dehumidifying air cleaner 1 . The motor 21a is connected to the fan 21 via a shaft 21b. The rotation of the motor 21a is controlled by control means.

The dehumidifying air purifier 1 of this embodiment is equipped with a dehumidifying means. The dehumidification means has a dehumidification part that removes moisture contained in the air. The dehumidification means can be any means as long as it can remove moisture contained in the air. The dehumidifying air purifier 1 of this embodiment is a heat pump type dehumidification means equipped with a refrigerant circuit. The refrigerant circuit has: a heat exchanger including an evaporator 31 for evaporating the refrigerant; and a compressor (not shown) that compresses the refrigerant. refrigerant; and a pressure reducing device (illustration omitted), which depressurizes the refrigerant.

In this disclosure, the dehumidification means is not limited to a heat pump type dehumidification means. The dehumidification means of the present disclosure may be, for example, a desiccant-type dehumidification means that condenses moisture in the air removed by an adsorbent in a heat exchanger, and the adsorbent is provided in the dehumidification part.

The heat pump type dehumidification means of this embodiment further includes a condenser 32 which serves as a heat exchanger for condensing the refrigerant. In this dehumidification means, the evaporator 31 and the condenser 32 of the heat exchanger are equivalent to the dehumidification part. The evaporator 31 , the condenser 32 , the compressor, and the pressure reducing device are housed in the box 10 . The compressor driving motor of the compressor is controlled by control means. In this embodiment, the evaporator 31 and the condenser 32 are surrounded by the back box 10b.

The evaporator 31, the compressor, the condenser 32, and the pressure reducing device are sequentially connected via pipes (not shown) and the like. The refrigerant flows in the refrigerant circuit formed by the evaporator 31, the compressor, the condenser 32, and the pressure reducing device. The evaporator 31 and the condenser 32 are heat exchangers, which are used for heat exchange between the refrigerant and the air. The compressor is a device that compresses the low-pressure refrigerant evaporated in the evaporator 31 into high-pressure refrigerant. The pressure reducing device is a device that reduces the pressure of the high-pressure refrigerant that has passed through the condenser 32 and turns it into a low-pressure refrigerant. The pressure reducing device is, for example, an expansion valve or a capillary tube.

Heat is exchanged between the air passing through the evaporator 31 and the refrigerant flowing in the evaporator 31 . In the evaporator 31, the refrigerant whose pressure is reduced by the pressure reducing device flows. In the evaporator 31 , a refrigerant having a lower temperature than the air taken into the inside of the box 10 flows. The refrigerant flowing in the evaporator 31 absorbs heat from the air passing through the evaporator 31 . The air passing through the evaporator 31 is heated by the refrigerant flowing in the evaporator 31 . That is, the air passing through the evaporator 31 is cooled by the refrigerant flowing in the evaporator 31 . Thereby, the moisture contained in the air passing through the evaporator 31 is condensed. That is, condensation occurs. The water in the condensed air is removed from the air as liquid water. The removed water is stored in the water tank 14, which is installed inside the tank 10, for example. This water tank 14 is detachable from the box 10 . The air passing through the evaporator 31 is sent to the condenser 32 . Heat is exchanged between the air passing through the condenser 32 and the refrigerant flowing in the condenser 32 . The refrigerant flowing in the condenser 32 is cooled by the air passing through the condenser 32 . The air passing through the condenser 32 is heated by the refrigerant flowing in the condenser 32 . The air passing through the condenser 32 is in a drier state than the air outside the dehumidifying air purifier 1 . The dry air passes through the fan 21 . The air passing through the fan 21 is sent from the air outlet 12 to the upper part of the box 10 . In this way, the dehumidifying air purifier 1 dehumidifies the air. In addition, the dehumidifying air cleaner 1 supplies air in a dry state to the outside.

The rear box 10b has a grid portion 10c. The grid portion 10c is formed with a plurality of openings through which the air flowing into the evaporator 31 passes. When viewed from a direction parallel to the axis 21b of the fan 21, the total opening area of the grid portion 10c is approximately the same as the area of the evaporator 31. The evaporator 31 and the grid portion 10c are arranged with the first space 33 therebetween. and face each other across a distance C.

In addition, the dehumidification air purifier 1 is equipped with an air purifying filter for purifying the air. In this disclosure, "purifying the air" means, for example, removing at least one of dust, odor, particles, droplets and smoke in the air. In the following explanation, dust, particles, droplets and smoke in the air are collectively referred to as "dust". The dehumidifying air purifier 1 of this embodiment serves as an air purifying filter and includes a HEPA filter 41 and an activated carbon filter 42 . The HEPA filter 41 and the activated carbon filter 42 are accommodated in the box 10 . In this embodiment, the HEPA filter 41 and the activated carbon filter 42 are accommodated in the back box 10b.

HEPA filter 41 is a filter that collects fine dust in the air. The activated carbon filter 42 is a filter that deodorizes odors in the air. The HEPA filter 41 and the activated carbon filter 42 are provided to be detachable from the rear box 10b. The activated carbon filter 42 is disposed across the second space 34 and faces the grid portion 10c with a distance D therebetween. The grid part 10c is located between the evaporator 31 and the activated carbon filter 42.

In this embodiment, an air path is formed inside the box 10 that communicates from the suction port 11 to the blower port 12 . In this air path, an inlet cover 11a, a HEPA filter 41, an activated carbon filter 42, an evaporator 31, a condenser 32, and a fan 21 are arranged in this order from the inlet 11. The evaporator 31 and the condenser 32 constitute a heat exchanger.

The dehumidifying air purifier 1 of this embodiment includes a filter air path 44 and a bypass air path 43 . The filter air path 44 is an air path in which the air sucked into the box 10 from the suction port 11 passes through the HEPA filter 41 and the activated carbon filter 42, which are equivalent to air purification filters, and then reaches the evaporator 31. The bypass passage 43 is an air passage through which the air sucked into the box 10 from the suction inlet 11 reaches the evaporator 31 and the condenser 32 without passing through the HEPA filter 41 and the activated carbon filter 42. The carbon filter 42 is equivalent to an air purifying filter, and the evaporator 31 and the condenser 32 are equivalent to a heat exchanger.

In addition, in this disclosure, the upstream side and the downstream side are determined using the air flow flowing in the air passage communicating from the suction port 11 to the blowout port 12 . For example, the side of the heat exchanger with the suction port 11 is regarded as the upstream side. In addition, the side where the blower outlet 12 is located is regarded as the downstream side of the heat exchanger. The bypass passage 43 is an air passage through which air flows downstream without passing through the HEPA filter 41 and the activated carbon filter 42 .

As shown in FIG. 3 , in this embodiment, the bypass air passage 43 is adjacent to the filter air passage 44 . A partition or partition wall may also be used to separate the bypass air passage 43 and the filter air passage 44. In this manner, by disposing the bypass air passage 43 adjacent to the filter air passage 44, the air passage in the dehumidifying air purifier 1 can be configured compactly, and the dehumidifying air purifier 1 can be made compact.

In this embodiment, the dehumidification air purifier 1 includes: a bypass passage 43 adjacent to the left side of the HEPA filter 41 and the activated carbon filter 42; and a bypass passage 43 connected to the HEPA filter 41 and the activated carbon filter. The right side of the container 42 is adjacent. In this way, by providing the bypass passage 43 adjacent to one side of the filter air passage 44 and the bypass passage 43 adjacent to the other side of the filter air passage 44, the dehumidification air purifier 1 can be made compact. , and it is more advantageous to make the pressure loss of the bypass passage 43 smaller.

In this embodiment, when the dehumidifying air cleaner 1 is viewed from the back, that is, when viewed from a direction parallel to the axis 21b of the fan 21, the filter air passage 44 has a rectangular shape. Furthermore, one bypass air passage 43 is provided along the left side of the rectangular shape of the filter air passage 44 , and the other bypass air passage 43 is provided along the right side of the rectangular shape of the filter air passage 44 . When the dehumidifying air purifier 1 is viewed from the back, the length of the bypass passage 43 in the vertical direction, that is, in the up and down direction, is set to be equal to the length of the HEPA filter 41 in the vertical direction, that is, in the up and down direction. The length of the HEPA filter 41 is preferably the same.

The airflow flowing to the bypass air passage 43 and the airflow flowing to the filter air passage 44 merge in the space downstream of the activated carbon filter 42 . The airflow flowing to the bypass air passage 43 and the airflow flowing to the filter air passage 44 merge in the first space 33 and the second space 34. The first space 33 is separated from the grid part 10c by a distance C, and the second space 33 is separated from the grid part 10c by a distance C. The space 34 is separated by a distance D from the grid portion 10c. That is, the airflow flowing to the bypass air passage 43 and the airflow flowing to the filter air passage 44 merge in front of the evaporator 31 and then flow in one air passage, and the evaporator 31 is arranged in the active air passage. Downstream of carbon filter 42.

The dehumidifying air purifier 1 of this embodiment has an air guide surface 43a, which is provided in the bypass passage 43. The air guide surface 43a guides the airflow of the bypass passage 43 so that the airflow of the bypass passage 43 is close to the center of the upwind side surface of the heat exchanger of the dehumidification part. The air guide surface 43a guides the air flow coming through the bypass passage 43 to the center direction of the upwind side surface of the heat exchanger. The air guide surface 43a of this embodiment changes the direction of the airflow passing through the bypass passage 43 to the lateral direction (azimuth direction). According to this embodiment, by providing the air guide surface 43a, the air flow passing through the bypass passage 43 can flow into the heat exchanger equivalent to the dehumidification section more efficiently. Therefore, dehumidification efficiency can be improved.

In this embodiment, the air guide surface 43a is located on the left side of the grid part 10c, and the air guide surface 43a is located on the right side of the grid part 10c. The air guide surface 43a may also be formed as a flat surface. By adjusting the normal direction of the plane of the air guide surface 43a, the direction of the airflow can be adjusted. Furthermore, the air guide surface 43a may be formed as a curved surface. By adjusting the curvature of the curved surface of the air guide surface 43a, the expansion of the airflow guided by the air guide surface 43a can be adjusted.

The dehumidifying air purifier 1 is equipped with an opening and closing means, which adjusts the opening of the bypass passage 43 . In this embodiment, as shown in Fig. 3, a flap 51 corresponds to the opening and closing means. The baffle 51 is equivalent to a shielding plate capable of opening and closing. The baffle 51 can be opened and closed by setting the opening of the suction inlet of the bypass passage 43 to an open state, a closed state, or an intermediate state between the open state and the closed state. The suction port of the bypass passage 43 is a part of the suction port 11 . The suction port of the bypass passage 43 is located outside the left and right outer edges of the end surface on the upwind side of the HEPA filter 41 . The baffle 51 is composed of a plate-shaped member. The baffle 51 is arranged downstream of the suction inlet cover 11a. The baffle 51 is rotatable about a rotating shaft provided at the end opposite to the HEPA filter 41 side, for example, and is driven by an opening and closing means driving motor (not shown). The baffle 51 located on the left side of the HEPA filter 41 rotates around a rotating shaft provided at the left end of the plate-shaped member constituting the baffle. The baffle 51 located on the right side of the HEPA filter 41 rotates around a rotating shaft provided at the right end of the plate-shaped member constituting the baffle. The control means can adjust the opening of the baffle 51 by controlling the action of the motor driving the opening and closing means.

FIG. 3 shows a state when the damper 51 is in a position to close the suction inlet of the bypass passage 43, that is, when the damper 51 is fully closed. When the baffle 51 is fully closed, air is prevented from flowing into the suction port of the bypass passage 43 and therefore the air is prevented from passing through the bypass passage 43 . When the opening and closing means drives the motor to rotate the baffle 51 in the downstream direction, the bypass passage 43 opens, and air can flow into the suction port of the bypass passage 43. In the following, the value of the opening degree of the baffle 51 may be referred to as the opening ratio "%". The opening ratio when the shutter 51 is fully closed is assumed to be 0%, and the opening ratio when the shutter 51 is fully open is assumed to be 100%.

The dehumidifying air purifier 1 is equipped with indoor humidity detection means, which detects the relative humidity of indoor air. In this disclosure, relative humidity is sometimes referred to simply as "humidity". As shown in FIG. 3 , in this embodiment, the humidity sensor 61 corresponds to indoor humidity detection means. The humidity sensor 61 is provided inside the box 10 . An opening (not shown) is provided in a portion of the box 10 near the humidity sensor 61 to communicate between the outside of the box 10 and the humidity sensor 61 . The control means obtains humidity detection information through the humidity sensor 61, thereby measuring the indoor humidity. The humidity detection information obtained by the control means may also be transmitted to the operation display substrate 15a, and the information on the measurement results of the humidity sensor 61 may be displayed on the operation display part 15. Alternatively, the information can also be notified to the user through other user interfaces.

In addition, the dehumidifying air purifier 1 is equipped with an indoor air pollution level detection means that detects the air pollution level that is the pollution level of indoor air. Air pollution degree is equivalent to the amount or concentration of at least one of dust, odor, particles, droplets and smoke in indoor air. As shown in FIG. 2 , in this embodiment, the dust sensor 62 and the gas sensor 63 correspond to indoor air pollution level detection means. It is not limited to this example. The dehumidifying air purifier 1 of the present disclosure may also be provided with only one of the dust sensor 62 and the gas sensor 63 as an indoor air pollution level detection means. In this manner, the dehumidifying air purifier 1 includes at least one sensor among a humidity sensor 61 , a dust sensor 62 and a gas sensor 63 .

The dust sensor 62 is arranged inside the box 10 . An opening (not shown) is provided in a portion of the box 10 near the dust sensor 62 to communicate between the outside of the box 10 and the dust sensor 62 . The control means obtains dust detection information through the dust sensor 62, thereby measuring the amount and concentration of dust in the room. The dust sensor 62 has the capability of detecting particles of 0.1 μm, for example. The dust detection information obtained by the control means may also be transmitted to the operation display substrate 15a, and the information on the measurement results of the dust sensor 62 may be displayed on the operation display unit 15. Alternatively, the information can also be notified to the user through other user interfaces.

The gas sensor 63 is arranged inside the box 10 . An opening (not shown) is provided in a portion of the box 10 near the gas sensor 63 to communicate between the outside of the box 10 and the gas sensor 63 . The control means obtains gas detection information through the gas sensor 63, thereby measuring the odor of the indoor air. The gas detection information obtained by the control means may also be transmitted to the operation display substrate 15a, and the information on the measurement result of the gas sensor 63 may be displayed on the operation display part 15. Alternatively, the information can also be notified to the user through other user interfaces.

Hereinafter, the operation of the dehumidifying air cleaner 1 according to Embodiment 1 will be further described. In Embodiment 1, a plurality of preset operating modes are stored in the control means. As an example of the operation mode, there is a dehumidification operation mode, an air purification operation mode, and a dehumidification air purification operation mode, and the control means includes at least one operation mode among these three operation modes. Fig. 4 is a flowchart showing the dehumidification operation mode. Figure 5 is a flow chart showing the air purification operation mode. Fig. 6 is a flow chart showing the dehumidification air purification operation mode.

Here, during the stop operation of the dehumidifying air cleaner 1, the compressor driving motor and the motor 21a are controlled by the control means to stop, the shutter driving motor is controlled so that the shutter 13 is in a state of closing the blowout outlet 12, and the opening and closing means are driven. The damper 51 is controlled by a motor to close the suction inlet of the bypass passage 43 .

Hereinafter, the dehumidification operation mode will be described using FIG. 4 . The dehumidification operation mode is an operation mode used to dehumidify the room. For example, when the user turns ON the operation switch of the operation display unit 15 and selects the dehumidification operation mode through the operation mode switching switch, the dehumidification air purifier 1 starts the dehumidification operation. First, the control means controls the shutter driving motor so that the shutter 13 opens the air outlet 12 (step S001). Next, the control means controls the opening and closing means driving motor to open the damper 51 and open the suction inlet of the bypass air passage 43 (step S002). At this time, the control means can also be used to fully open the baffle 51 . The control means rotates the motor 21a, controls the fan 21 to rotate at a preset strong rotation speed (step S003), and controls the compressor driving motor to start compressing the refrigerant (step S004). . Here, the "rotation speed" in this disclosure means the number of rotations per unit time, that is, the rotation speed. Therefore, the rotation speed of the fan 21 is equivalent to the operating speed of the air supply means.

Next, the control means starts the operation of causing the humidity sensor 61 to detect the humidity of the air around the humidity sensor 61, and determines whether the humidity is above 50% (step S005). When the humidity is above 50%, the control means continues the driving operation of the compressor driving motor and performs dehumidification operation (step S006). After a fixed time has elapsed, the process returns to step S005. When the humidity is less than 50%, the control means stops driving the compressor driving motor and stops the refrigerant compression operation of the compressor (step S007). At this time, the control means controls the rotational driving operation of the motor 21a to continue, and returns to step S005 after a predetermined time has elapsed. In addition, in step S005, the threshold value of humidity for stopping the compressor is regarded as 50%. However, this is an example, and the threshold value of humidity may be other values.

In this way, in the dehumidification operation mode, because the baffle 51 is opened, the air sucked into the box 10 from the suction port 11 does not mainly pass through the filter air path 44 with high pressure loss, but mainly passes through the side with low pressure loss. Ventilation path 43. Therefore, the driving load of the fan 21 can be reduced, the air flow rate can be increased, and energy-saving and high-efficiency operation can be achieved.

Next, the air purification operation mode will be explained using Figure 5 . The air purification operation mode is an operation mode used to purify the indoor air. For example, when the user turns ON the operation switch of the operation display unit 15 and selects the air purifying operation mode through the operation mode switching switch, the dehumidifying air purifier 1 starts the air purifying operation. First, the control means controls the shutter driving motor so that the shutter 13 opens the air outlet 12 (step S101). In addition, the baffle 51 closes the suction inlet of the bypass passage 43 . Next, the control means drives the motor 21a to rotate and controls the fan 21 to rotate at a preset strong rotational speed (step S102). The control means controls the dust sensor 62 and the gas sensor 63 to respectively start detecting dust and gas in the air around the sensors and determine the degree of air pollution (step S103). In this disclosure, "air pollution" refers to the degree of air pollution, which is equivalent to the degree of air pollution. Here, as an example, the control means compares the particle concentration detected by the dust sensor 62 with a threshold value, and compares the gas concentration detected by the gas sensor 63 with the threshold value, thereby Air pollution is divided into two stages: "major" and "minor". For example, the control means may also be used to determine the air pollution as "large" when the particle concentration detected by the dust sensor 62 exceeds a threshold value, or the gas concentration detected by the gas sensor 63 exceeds the threshold value. . The control means can also be used to determine the air pollution as "low" when the particle concentration detected by the dust sensor 62 is lower than the threshold value and the gas concentration detected by the gas sensor 63 is lower than the threshold value. . However, in this disclosure, the control means may also be used to determine air pollution into three or more stages.

In step S103, when the air pollution is small, the control means controls the motor 21a to rotate the fan 21 at a preset weak rotation speed (step S104), and performs air cleaning operation (weak) (step S105). After the time, return to step S103. Correspondingly, in step S103, when the air pollution is large, the control means performs air purification operation (strong) (step S106), which controls the motor 21a in step S102 to the rotation speed at which the fan 21 rotates strongly as mentioned above. The rotation continues, and after a fixed time has elapsed, the process returns to step S103.

In the air purifying operation mode, since the baffle 51 is closed, substantially all the air sucked into the box 10 from the suction port 11 passes through the filter air passage 44 . Therefore, indoor air can be efficiently purified.

Next, the dehumidification air purification operation mode will be explained using Figure 6 . The dehumidification and air purification operation mode is an operation in which the control means automatically switches the opening of the baffle 51 in response to the indoor humidity and air pollution, while dehumidifying the room and making the indoor air purified. model. For example, when the user turns ON the operation switch of the operation display unit 15 and selects the dehumidifying air purifying operation mode through the operation mode switching switch, the dehumidifying air purifier 1 starts the dehumidifying air purifying operation. First, the control means controls the shutter driving motor so that the shutter 13 opens the air outlet 12 (step S201). Next, the control means controls the opening and closing means driving motor to open the damper 51 and open the suction inlet of the bypass air passage 43 (step S202). Here, the baffle 51 may be fully opened, that is, the opening ratio of the baffle 51 may be 100%.

The control means drives the motor 21a to rotate and controls the fan 21 to rotate at a preset strong rotation speed (step S203). The compressor driving motor is driven so that the compressor starts compressing the refrigerant (step S204). The control means starts the operation of causing the humidity sensor 61 to detect the humidity of the air around the humidity sensor 61 and determines whether the humidity is above 50% (step S205).

In step S205, when the humidity is 50% or more, the control means continues the driving operation of the compressor driving motor, and controls the dust sensor 62 and the gas sensor 63 to start monitoring the surroundings of the sensors respectively. Detecting dust and gas in the air and determining the degree of air pollution (step S206). Here, the control means compares the particle concentration detected by the dust sensor 62 with the threshold value, and compares the gas concentration detected by the gas sensor 63 with the threshold value, thereby controlling the pollution of the air. , that is, the air pollution level is determined from the clean side to four stages: "small", "level E", "level F" and "level G". However, in this disclosure, instead of this example, the control method can also be used to determine air pollution by dividing it into segments other than the four stages.

In step S206, when it is determined that the air pollution is not small, the control means determines whether the air pollution is level E (step S208). When it is determined that the air pollution is not level E, the control means determines whether the air pollution is level F (step S211). When it is determined that the air pollution is not level F, the control means determines that the air pollution is level G (step S214). Grade G is the most polluted grade of air, that is, it is equivalent to the grade with the highest degree of air pollution.

In step S206, when the air pollution is small, the control means continues the operations of steps S202, S203, and S204 to perform a dehumidification operation (step S207). After a fixed time has elapsed, it returns to step S205.

In step S208, when the air pollution is level E, the control means controls the opening and closing means driving motor to close the baffle 51 by 1/3 and close the suction inlet of the bypass passage 43 by only 1/3 (step S208). S209), perform dehumidification air cleaning operation E (step S210), and after a fixed time has elapsed, return to step S205. Here, closing the baffle 51 by 1/3 is equivalent to making the opening of the baffle 51 2/3, or making the opening ratio of the baffle 51 66.7%.

In step S211, when the air pollution is level F, the control means controls the opening and closing means driving motor to close the baffle 51 by 2/3 and close the suction inlet of the bypass passage 43 by only 2/3 (step S211). S212), perform dehumidification air cleaning operation F (step S213), and after a fixed time has elapsed, return to step S205. Here, closing the baffle 51 by 2/3 is equivalent to making the opening of the baffle 51 1/3, or making the opening ratio of the baffle 51 33.3%.

In step S214, when the air pollution is level G, the control means controls the opening and closing means driving motor to close the baffle 51 to fully close, and close the suction inlet of the bypass passage 43 (step S215) to perform dehumidification. In the air purifying operation G (step S216), after a fixed time has elapsed, the process returns to step S205.

In step S205, when the humidity is less than 50%, the control means stops driving the compressor driving motor and stops the refrigerant compression operation of the compressor (step S217). In this state, the control means controls the dust sensor 62 and the gas sensor 63 to respectively start detecting dust and gas in the air around the sensors and determine the degree of air pollution (step S218). When the air pollution is small, the control means controls the motor 21a to rotate the fan 21 at a preset weak rotation speed (step S219), and performs a cyclic operation of only air supply without dehumidification (step S220). After a fixed time, , return to step S205. On the other hand, in step S218, when the air pollution is large, the control means controls the opening and closing means driving motor to close the baffle 51 to fully close and close the suction inlet of the bypass passage 43 (step S221). Air purification operation (strong) (step S222) is a continuation of the strong rotation of the fan 21 in step S203. After a fixed period of time, the operation returns to step S005 in the dehumidification operation mode in FIG. 4 . Here, as an example of the operation, the threshold value of humidity that causes the compressor to stop is taken to be 50%. However, this is an example, and the threshold value of humidity may be other values.

Next, the process of notifying the timing of replacement or cleaning of the HEPA filter 41 and the activated carbon filter 42 which are air cleaning filters in the dehumidifying air cleaner 1 of Embodiment 1 will be described. FIG. 7 is a graph showing an example of the relationship between the cumulative operating time and the total inflow amount of air into the filter air passage 44 . In this disclosure, the total amount of air flowing into the filter air duct 44 is equivalent to the total mass or total volume of the air flowing into the filter air duct 44 . It can be considered that the pollution of the air purifying filter is proportional to the total inflow of air into the filter air passage 44 and is accumulated. Therefore, in order to appropriately determine the timing of replacement or cleaning of the air purifying filter, it is important to accurately calculate the total inflow of air into the filter air path 44 .

In this disclosure, the air flow rate passing through the filter air passage 44 is equivalent to the mass flow rate or volume flow rate of the air passing through the filter air passage 44 . As shown above, when the air purification operation mode is selected by the operation mode switch, since the baffle 51 is still fully closed, all the air flowing into the box 10 from the suction port 11 passes through the filter air passage 44 . Furthermore, the air flow rate passing through the filter air passage 44 is smaller when the fan 21 is controlled to rotate weakly than when the fan 21 is controlled to rotate strongly. When the dehumidification operation mode is selected, the opening and closing means driving motor is controlled so that the damper 51 is fully opened, so the bypass passage 43 is opened, and the air flowing into the box 10 from the suction port 11 mainly passes through the small pressure loss. Bypass ventilation 43. Therefore, the air flow rate passing through the filter air passage 44 is smaller than that in the air purifying operation mode. When the dehumidified air purifying operation mode is selected, the air flow rate passing through the filter air path 44 changes in response to the opening of the baffle 51 and the switching of the rotational speed of the fan 21.

In this way, in the dehumidifying air purifier 1, even if the rotation speed of the fan 21 is the same, the air flow rate passing through the filter air path 44 changes in response to the opening of the baffle 51. Therefore, the total amount of air flowing into the filter air passage 44 cannot be accurately calculated based only on the operating time. On the other hand, the control means of this embodiment calculates the total inflow amount of air into the filter air passage 44 based on the opening degree of the damper 51 and the operation time. Thereby, the total amount of air flowing into the filter air passage 44 can be accurately calculated. Furthermore, the control means notifies the timing of replacing or cleaning the air purifying filter in accordance with the calculated total inflow of air into the filter air passage 44 . This allows you to accurately notify when it is time to replace or clean the air purifying filter.

In this embodiment, the fan 21 rotates strongly or weakly, which corresponds to the operating state of the air blowing means. In this embodiment, the control means memorizes in advance the relationship between the operating state of the air blowing means, the opening of the baffle 51, and the air flow rate passing through the filter air duct 44, and uses this relationship to calculate the air flow to the filter air duct 44. total inflow. Thereby, even when the operating state of the air blowing means changes, the total amount of air flowing into the filter air passage 44 can be accurately calculated. In addition, in this disclosure, when the rotation speed of the fan 21 is always fixed, the control method only needs to memorize the relationship between the opening degree of the baffle 51 and the air flow rate passing through the filter air passage 44 in advance, so that the flow rate to the filter can be accurately calculated. The total inflow of air in the air path 44.

In the following description, the opening of the baffle 51 is divided into four stages, just like the above-mentioned dehumidification air purifying operation mode. However, the division number can also be divided into other values.

The control means is the value of the air flow rate passing through the filter air passage 44 when the fan 21 is controlled to rotate strongly. The air flow rate H when the damper 51 is fully closed is memorized in advance. The damper 51 is closed by 2/3 and the damper is closed. The air flow I when the opening of 51 is 1/3, the air flow J when the baffle 51 is closed 1/3 and the opening of the baffle 51 is 2/3, and the air flow K when the baffle 51 is fully open. At this time, the air flow rates H, I, J and K are in the relationship of H>I>J>K. The air flow rate H is equivalent to when the fan 21 is controlled to rotate strongly in the air purification operation mode. The air flow rate K is equivalent to the dehumidification operation mode.

In addition, the control means is a value of the air flow rate passing through the filter air passage 44 when the fan 21 is controlled to rotate weakly. The air flow rate L when the damper 51 is fully closed and the air flow rate L when the damper 51 is fully open are memorized in advance. Flow rate M. At this time, the air flow rates H, L, and M have a relationship of H>L>M.

Moreover, the control means is equipped with an operation time accumulation timer (illustration omitted) which accumulates the operation time of the fan 21. The operation time accumulation timer in this embodiment accumulates the operation time individually for each of a plurality of operation states in which either or both of the operating state of the air blower and the opening of the damper 51 are different. Furthermore, the control means calculates the total air amount calculated from the operating time and the air flow rate for each of the plurality of operating states, thereby calculating the total inflow amount of air into the filter air passage 44 . Therefore, the total amount of air flowing into the filter air passage 44 can be calculated more accurately.

That is, the operation time accumulation timer individually integrates the value of the air flow rate passing through the filter air passage 44 to become the operation time TH in the operation state of the air flow rate H, the operation time TI in the operation state of the air flow rate I, and the operation time TI to become the air flow rate J. The operation time TJ of the operation state, the operation time TK of the operation state of the air flow rate K, the operation time TL of the operation state of the air flow rate L, and the operation time TM of the operation state of the air flow rate M. In addition, the horizontal axis of FIG. 7 does not represent the passage of time. The horizontal axis of FIG. 7 arranges the individually accumulated operating times TH, TI, TJ, TK, TL, and TM in order from the left.

Furthermore, the control means calculates the total amount of air flowing into the filter air duct 44 in all operating states at predetermined intervals, thereby calculating the cumulative value of the total air flowing into the filter air duct 44 . . That is, the control means calculates the air flow to the filter air path 44 based on (H×TH)+(I×TI)+(J×TJ)+(K×TK)+(L×TL)+(M×TM). The cumulative value of the total air inflow. The accumulated value of this calculation is equivalent to the calculated value of the total air inflow amount to the filter air passage 44 .

The dehumidifying air cleaner 1 according to Embodiment 1 is equipped with a notification light (not shown) on the operation display substrate 15a, which notifies the timing of replacement or cleaning of the HEPA filter 41 and the activated carbon filter 42. As shown in FIG. 7 , when the cumulative value of the total air inflow to the filter air duct 44 calculated by the control means reaches the replacement notification inflow amount X corresponding to the preset reference value, it becomes (H × TH) + ( When I×TI) + (J×TJ) + (K×TK) + (L×TL) + (M×TM) > , and is displayed on the operation display unit 15 . In this manner, the notification light is equivalent to a display means indicating that it is time to replace or clean the air purifying filter. The control means can also be used to replace the notification light, or not only the notification light, but also use other user interfaces to notify by display or sound that it is time to replace or clean the air purifying filter.

The illuminated notification lamp is turned off by pressing the reset button (not shown) provided on the display substrate 15a. By pressing the reset button, the accumulated value of the total air inflow to the filter air duct 44 is reset, and the control means recalculates the total air inflow to the filter air duct 44 starting from the next operation. the cumulative value. In this manner, the reset button is equivalent to a reset means for accepting a reset operation. When the reset means accepts the reset operation, the control means clears the display of the display means and resets the calculated value of the total air inflow to the filter air path 44. The display means indicates whether to replace or clean the air purifying filter. Timing.

As shown in the above description, according to this embodiment, a dehumidification air purifier 1 is obtained, which can notify the user of the appropriate replacement of the HEPA filter 41 and the activated carbon filter 42 by providing calculation means and a notification light. and the timing of cleaning. The calculation method is to calculate the cumulative value of the total inflow of air to the filter air duct 44. The notification light is generated when the total inflow of air to the filter air duct 44 reaches the replacement notification inflow amount X. situation, the notification is the time to replace or clean the HEPA filter 41 and the activated carbon filter 42.

In this disclosure, each function of the control means of the dehumidifying air purifier 1 may be composed of a processing circuit. The processing circuit of the control means may also include at least one processor and at least one memory. In the case where the processing circuit includes at least one processor and at least one memory, each function of the control means can also be achieved by software, firmware, or a combination of software and firmware. At least one of the software and the firmware may be described as a program. Alternatively, at least one of the software and the firmware may be stored in at least one memory. At least one processor achieves various functions of the control means by reading out and executing the program stored in at least one memory. At least one memory system may also include non-volatile or volatile semiconductor memory, magnetic disks, etc.

The processing circuit of the control means may also be equipped with at least one dedicated hardware. When the processing circuit system has at least one dedicated hardware, the processing circuit system may also be a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, ASIC (Application Specific Integrated Circuit), FPGA ( Field Programmable Gate Array), or a combination of these components. The functions of each part of the control means can also be achieved by processing circuits respectively. Furthermore, the functions of each part of the control means may be collectively implemented by the processing circuit. Part of each function of the control means can also be implemented by dedicated hardware, and other parts can be implemented by software or firmware. The processing circuit can also use hardware, software, firmware, or a combination of these to achieve various functions of the control means.

In addition, the control means of the dehumidifying air purifier 1 may be located on a cloud server connected via the Internet. Embodiment 2

Next, Embodiment 2 will be described with reference to FIG. 8 . However, differences from the above-described Embodiment 1 will be mainly described, and common descriptions will be simplified or omitted. In addition, the same symbols are attached to the components that are the same as or corresponding to the above-mentioned components.

The dehumidifying air purifier 1 according to the second embodiment is provided with a display means for displaying the clogging rate of the air purifying filter. The clogging rate is a reference value for replacing or cleaning the air purifying filter and the calculated air flow to the filter air path 44. percentage of total inflows. FIG. 8 is a graph showing an example of the relationship between the cumulative operation time, the total inflow amount of air into the filter air passage 44, and the clogging rate of the air purifying filter.

The dehumidifying air cleaner 1 according to Embodiment 2 is provided with a clogging rate display portion (not shown) on the operation display substrate 15a, which is equivalent to a display means for displaying the clogging rate of the HEPA filter 41 and the activated carbon filter 42. The cumulative value of the total air inflow to the filter air path 44 calculated from the control means (H×TH) + (I×TI) + (J×TJ) + (K×TK) + (L×TL) +(M×TM), and the preset replacement notification inflow amount X, calculate the clogging rate of the HEPA filter 41 and the activated carbon filter 42. The blocking rate is calculated as [(H×TH)+(I×TI)+(J×TJ)+(K×TK)+(L×TL)+(M×TM)]/X[%].

As shown in Figure 8, in the case of (H×TH)+(I×TI)+(J×TJ)+(K×TK)+(L×TL)+(M×TM)]=X, the system is blocked The rate becomes 100%. Until the blocking rate reaches 100%, it is calculated appropriately from (H×TH)+(I×TI)+(J×TJ)+(K×TK)+(L×TL)+(M×TM), and Change the relationship between the notification inflow amount X and calculate the blocking rate. The calculation results are transmitted to the operation display substrate 15a at fixed intervals and displayed on the blocking rate display unit. After the obstruction rate reaches 100%, the system continues to display the obstruction rate 100% on the obstruction rate display part.

By pressing the reset button (not shown) provided on the operation display substrate 15a, the blocking rate displayed on the blocking rate display unit returns to 0%. By pressing the reset button, the accumulated value of the total air inflow to the filter air passage 44 is reset. Starting from the next operation, the control means calculates the cumulative value of the total air inflow to the filter air passage 44 again, and calculates the obstruction rate from the relationship with the replacement notification inflow amount X.

In this way, according to this embodiment, by providing: a calculation means that calculates the cumulative value of the total inflow of air to the filter air passage 44; and a blocking rate display section that displays the blocking rate from the filter to the filter air path 44. Calculated by the total air inflow volume of the air duct 44 and the replacement notification inflow volume Knowing the appropriate timing for replacement and cleaning of the HEPA filter 41 and the activated carbon filter 42, and at any pollution level such as a blocking rate of 80%, the HEPA filter 41 and activated carbon filtration can be started with sufficient margin. Replacement and cleaning of device 42.

1:Dehumidification air purifier 10:box 10a:Front box 10b: Back box 10c: Grid part 11:Suction port 11a: Suction inlet cover 12: Blowing outlet 13: blinds 14:sink 15: Operation display part 15a: Operation display substrate 16: Substrate box (contains the control substrate equivalent to the control means inside) 20:wheels 21:Fan 21a: Motor 21b:shaft 31:Evaporator 32:Condenser 33:First space 34:Second Space 41:HEPA filter 42:Activated carbon filter 43:Bypass ventilation channel 43a: Wind guide surface 44:Filter air path 51:Baffle 61:Humidity sensor 62:Dust sensor 63:Gas sensor

Fig. 1 is a rear view of the dehumidifying air purifier according to Embodiment 1. FIG. 2 is a cross-sectional side view of the dehumidifying air purifier according to Embodiment 1 taken along line A=A in FIG. 1 . Fig. 3 is a cross-sectional plan view of the dehumidifying air purifier according to Embodiment 1 taken along line B=B in Fig. 1 . Figure 4 is a flow chart of the dehumidification operation mode. Figure 5 is a flow chart of the air purification operation mode. Figure 6 is a flow chart of the dehumidification air purification operation mode. FIG. 7 is a graph showing an example of the relationship between the cumulative operating time and the total inflow amount of air into the filter air path. FIG. 8 is a graph showing an example of the relationship between the cumulative operating time, the total inflow of air into the filter air path, and the clogging rate of the air purifying filter.

Claims (14)

An air purifier includes: a frame having a suction inlet and a blowout outlet; an air purifying filter disposed inside the frame; and an air supply means disposed inside the frame and generating air from the frame. The air flow from the suction inlet to the blowout outlet; the evaporator and the condenser are arranged inside the frame; the filter air path is where the air sucked from the suction inlet passes through the air purifying filter and then reaches the Evaporator; the bypass passage is for the air sucked in from the suction port to reach the evaporator without passing through the air purification filter; the opening and closing means are for adjusting the opening of the bypass passage; the timer is for accumulating the air supply The operation time of the means; and the control means are to notify the timing of replacing or cleaning the air purifying filter based on the opening degree of the opening and closing means and the operation time. For example, the air purifier of claim 1 is equipped with a dehumidification means, which uses the evaporator of the refrigerant circuit to remove moisture in the air. The refrigerant circuit has the evaporator, the condenser, the compressor and the pressure reducing device. If the air purifier of claim 1 or 2 includes at least one of a humidity sensor, a dust sensor and a gas sensor, the humidity sensor detects the humidity of the indoor air, and the dust The sensor detects the dust contained in the indoor air, and the gas sensor detects the odor of the indoor air; The control means notifies information about the detection result of the at least one sensor. Such as the air purifier of claim 1 or 2, wherein the control means has a plurality of operation modes, including at least one of a dehumidification operation mode, an air purification operation mode and a dehumidification air purification operation mode. For example, the air purifier of claim 1 or 2, wherein the control means has a dehumidification operation mode; in the dehumidification operation mode, the opening and closing means are opened, and the air sucked in from the suction port mainly passes through the bypass passage. For example, the air purifier of claim 1 or 2, wherein the control means has an air purifying operation mode; in the air purifying operation mode, the opening and closing means are closed, and the air sucked from the suction port passes through the filter air path . For example, the air purifier of claim 1 or 2 includes: a humidity sensor that detects the humidity of the indoor air; and an indoor air pollution level detection means that detects the air pollution level that is the pollution level of the indoor air; The control means has a dehumidification air purification operation mode; in the dehumidification air purification operation mode, the opening degree of the opening and closing means is changed according to the humidity and the air pollution degree. For example, the air purifier of claim 1 or 2, wherein the control means memorizes the relationship between the action state of the air supply means, the opening degree of the opening and closing means, and the air flow through the filter air path in advance, and uses the relationship, Calculate the total inflow of air into the air path of the filter, and then notify the replacement Or when to clean the air purifying filter. The air purifier of Claim 8, wherein the timer accumulates the operating time individually for each of a plurality of operating states in which either or both of the operating state of the air supply means and the opening of the opening and closing means are different. Such as the air purifier of claim 9, wherein the control means calculates the sum of the air volume calculated from the operating time and the air flow rate for each of the plurality of operating states, thereby calculating the air path to the filter. Total air inflow. For example, the air purifier of claim 8 is provided with a display means that indicates when the calculated total inflow of air to the filter air path reaches a reference value, indicating that it is time to replace or clean the air purifier filter. If the air purifier of claim 11 has a reset means, it accepts the reset operation; when the reset means accepts the reset operation, the control means eliminates the display of the display means and resets the filter. The calculated value of the total inflow of air in the air duct of the device. If the air purifier of claim 1 or 2 is provided with a display means for displaying the clogging rate of the air purifying filter, the clogging rate is a reference value for replacing or cleaning the air purifying filter, and the calculated flow rate of the air purifying filter. The percentage of the total air inflow in the air path. If the air purifier of claim 13 has a reset means, it accepts the reset operation; when the reset means accepts the reset operation, the control means resets the display of the obstruction rate to zero.

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