CN106563443B - Manufacturing method of catalyst and air conditioner indoor unit - Google Patents
Manufacturing method of catalyst and air conditioner indoor unit Download PDFInfo
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- CN106563443B CN106563443B CN201610935554.XA CN201610935554A CN106563443B CN 106563443 B CN106563443 B CN 106563443B CN 201610935554 A CN201610935554 A CN 201610935554A CN 106563443 B CN106563443 B CN 106563443B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/32—Manganese, technetium or rhenium
- B01J23/34—Manganese
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—Iron
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/75—Cobalt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
Abstract
The invention relates to a preparation method of a catalyst and an air-conditioning indoor unit, wherein the air-conditioning indoor unit comprises the following components: ion wind generating device and purifier. The purification device is arranged on a flow path from each ion wind generation device to the corresponding air outlet and is configured to remove nitrogen oxides in the air. The purification device of the present invention is disposed outside the ion wind generation device. Because the ion wind generating device is internally provided with the high-voltage discharge device, a certain amount of harmful gas, mainly NO, can be generated in the working process of the ion wind generating device2. In order to prevent the gases from being discharged from the indoor unit of the air conditioner and affecting the health of users, a purifying device is arranged at the outer side of each ion wind generating device to remove the harmful gases and improve the air cleanliness.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a catalyst manufacturing method and an air conditioner indoor unit.
Background
The nitrogen oxide is a trace gas in the earth atmosphere, has strong irritation, and has certain harm to human health due to excessive inhalation. Nitrogen oxides can irritate the lungs, making it more difficult for people to resist respiratory diseases such as colds, and people with respiratory problems, such as asthmatics, can be more susceptible to nitrogen dioxide. Studies have indicated that chronic inhalation of nitric oxide may lead to changes in lung architecture.
However, there is no air conditioner on the market today that is directed to removing nitrogen oxides.
Disclosure of Invention
An object of the present invention is to overcome at least one of the drawbacks of the prior art and to provide a method for manufacturing a catalyst and an indoor unit of an air conditioner.
It is another object of the present invention to accelerate the decomposition of nitrogen oxides in air.
It is still another object of the present invention to purify indoor air.
It is still another object of the present invention to improve the air blowing efficiency of the ion wind generating apparatus.
In order to achieve the above object, the present invention provides a method for producing a catalyst for accelerating decomposition of nitrogen oxides, comprising: preparing metal nitrate or acetate or sulfate into solution; adding a precipitator into the salt solution, and stirring for a preset time to enable metal ions to form solid precipitates; filtering the solution to obtain solid precipitate, and roasting the solid precipitate to obtain the catalyst; wherein the mass of the metal oxide in the catalyst is 10-50% of the total mass of the catalyst.
Alternatively, the temperature of the firing step is set to 200 to 1000 ℃.
Alternatively, the metal element in the metal nitrate or acetate or sulfate comprises: manganese or iron or aluminium or cobalt.
The present invention also provides an air conditioner indoor unit, comprising: a housing having at least one air inlet and at least one air outlet; the heat exchange device is arranged in the shell and is configured to exchange heat with air flowing through the shell; the fan assembly is arranged on the rear side of the heat exchange device and is configured to enable the air subjected to heat exchange by the heat exchange device to flow towards the air outlet; the ion wind generating device is respectively arranged on a flow path from the fan assembly to any one or more air outlets in the shell and is configured to impel air subjected to heat exchange by the heat exchange device to flow towards the air outlets through an air duct of the fan assembly by electric field force; and at least one purification device, which is arranged on the flow path from each ion wind generation device to the corresponding air outlet and is configured to remove nitrogen oxides in the air so as to purify the air.
Optionally, the purification device comprises: a frame; a mesh-cylindrical core disposed in a region defined by the frame, having a plurality of through holes extending in a thickness direction of the frame, and configured to adsorb nitrogen oxides in air flowing along the plurality of through holes; wherein the frame connects the inside of the net cylindrical core and the inner wall of the through hole is coated with a catalyst for accelerating the decomposition of nitrogen oxides.
Optionally, the ion wind generating device comprises: at least one discharge module, every discharge module all has the metal mesh and is located the metal mesh inboard and be a plurality of discharge needles that the array was arranged, and wherein the distance L of the needle point of every discharge needle and metal mesh sets to make it satisfy: l ═ aL1, wherein a is any constant in the range of 0.7-1.3, L1 is the distance between the needle point of the discharge needle and the metal mesh when the wind speed of the ion wind at the wind speed central point of the metal mesh reaches the maximum wind speed Vmax, and the wind speed central point of the metal mesh is the projection point of the needle point of the discharge needle on the metal mesh; the distance R between the needle tips of two adjacent discharge needles is set so that the distance R satisfies the following conditions: r is aR1, wherein R1 is the distance between a wind speed measuring point and a wind speed central point, the wind speed of which is b times the maximum wind speed Vmax, and b is any constant in the range of 0.3-0.7.
Optionally, the ion wind generating device comprises at least one discharging module which is sequentially arranged and connected in parallel or in series, and each discharging module is provided with a metal mesh and a plurality of discharging needles which are positioned on the inner side of the metal mesh and arranged in an array; and the discharge needles of two adjacent discharge modules are arranged in a straight-line opposite mode or in a staggered mode.
Optionally, the air inlet is disposed at the front side of the casing, and the air outlet includes a lower air outlet located at the lower portion of the casing, and a first lateral air outlet and a second lateral air outlet located at two sides of the casing and facing the lateral front of the casing, respectively; the fan assembly is configured to enable the air subjected to heat exchange through the heat exchange device to flow towards the lower air outlet, the first lateral air outlet and the second lateral air outlet respectively; the ion wind generating device comprises a first ion wind generating device and a second ion wind generating device which are respectively arranged on flow paths from the fan assembly to the first lateral air outlet and the second lateral air outlet in the shell and are respectively configured to enable air subjected to heat exchange through the heat exchange device to respectively flow towards the first lateral air outlet and the second lateral air outlet through an air channel of the fan assembly through electric field force; the purification device comprises a first purification device and a second purification device which are respectively arranged on a flow path from each ion wind generation device to the corresponding air outlet and are configured to respectively remove nitrogen oxides in the air flowing out of the first ion wind generation device and the second ion wind generation device.
Optionally, an inner side edge of a vertical bisection plane of the first lateral air outlet, which extends in the front-rear direction and is close to the air-conditioning indoor unit, is more forward than an outer side edge of the first lateral air outlet, which is far away from the vertical bisection plane, so that the first lateral air outlet faces the outer side of the casing in the front direction; and the second lateral air outlet and the first lateral air outlet are symmetrically arranged.
Optionally, the indoor unit of an air conditioner further includes: the first air guide channel and the second air guide channel respectively extend to the first lateral air outlet and the second lateral air outlet from the inner bending of the machine shell so as to respectively guide air flowing to the first lateral air outlet and the second lateral air outlet through an air duct of the fan assembly.
Optionally, the housing comprises: a rear case for constituting a rear portion of the cabinet; a front panel disposed at a front side of the rear case to constitute a front portion of the cabinet; the first side air duct and the second side air duct are respectively positioned at the two transverse ends between the rear shell and the front panel, and the outer side ports of the first side air duct and the second side air duct respectively form a first lateral air outlet and a second lateral air outlet; the first air guide channel and the second air guide channel are respectively formed inside the first side air guide cylinder and the second side air guide cylinder, the first ion wind generating device and the first purifying device are located in the first air guide channel, and the second ion wind generating device and the second purifying device are located in the second air guide channel.
The preparation method of the catalyst comprises the following steps: preparing metal nitrate or acetate or sulfate into solution; adding a precipitator into the salt solution, and stirring for a preset time to enable metal ions to form solid precipitates; and filtering the solution to obtain a solid precipitate, and roasting the precipitate to obtain the catalyst. Metal oxides such as manganese, iron, cobalt oxides are effective in rapidly decomposing nitrogen oxides. The catalyst prepared by the method of the invention has the advantages that the mass of the metal oxide in the catalyst can reach 10-50% of the total mass of the catalyst, and the nitrogen oxide in the air can be effectively and rapidly decomposed.
Furthermore, the air-conditioning indoor unit is provided with an ion wind generating device and a purifying device, wherein the ion wind generating device is arranged on a flow path from the fan assembly to the air outlet in the shell, and the air subjected to heat exchange by the heat exchange device is promoted to flow towards the air outlet through an air duct of the fan assembly by electric field force. The purification device is arranged on a flow path from each ion wind generation device to the corresponding air outlet and is configured to remove nitrogen oxides in the air so as to purify the air. The purification device of the present invention is disposed outside the ion wind generation device. Because the ion wind generating device is internally provided with the high-voltage discharge device, a certain amount of harmful gas, mainly NO, can be generated in the working process of the ion wind generating device2. In order to prevent the gases from being discharged from the indoor unit of the air conditioner and affecting the health of users, a purifying device is arranged outside each ion wind generating device to remove the harmful gases and improve the air cleanliness.
Furthermore, the invention can ensure that the ion wind generating device can generate uniform ion wind with larger wind quantity by reasonably designing the spatial position relationship between the discharge needles of the ion wind generating device and the metal net and reasonably distributing the position relationship among a plurality of discharge needles, thereby improving the wind supply speed, the wind supply quantity and the wind supply efficiency of the ion wind generating device.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic illustration of a method of making a catalyst according to one embodiment of the invention;
fig. 2 is a schematic structural view of an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic side view of an air conditioning indoor unit according to an embodiment of the present invention;
fig. 4 is a schematic front view of an air conditioning indoor unit according to an embodiment of the present invention;
fig. 5 is a schematic bottom view of an air conditioning indoor unit according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view taken along section line A-A in FIG. 4;
fig. 7 is a schematic structural exploded view of an air conditioning indoor unit according to an embodiment of the present invention;
FIG. 8 is a schematic exploded view of a discharge module of the ion wind generating device according to an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of a discharge module according to one embodiment of the invention; and
fig. 10 is a schematic structural view of a purification apparatus according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention firstly provides a manufacturing method of a catalyst, and the catalyst is used for accelerating the decomposition of nitrogen oxides. Fig. 1 is a schematic diagram of a method of making a catalyst according to one embodiment of the invention. The method comprises the following steps:
step S102: preparing metal nitrate or acetate or sulfate into solution; the metal nitrate, acetate or sulfate contains the following metal elements: manganese or iron or aluminium or cobalt. In the present embodiment, the metal salt solution is configured to be a manganese acetate aqueous solution.
Step S104: adding a precipitant into the salt solution, and stirring for a preset time to enable the metal ions to form solid precipitates. The precipitant may be an aqueous solution of potassium permanganate. The predetermined time may be set according to the solid precipitation rate of the solution, and may be, for example, 10 hours.
Step S106: and filtering the solution to obtain solid precipitate, wherein the solid precipitate is a precursor of the catalyst. And cleaning and drying the solid precipitate. And roasting the precipitate to obtain the catalyst. Wherein the mass of the metal oxide in the calcined catalyst is 10-50% of the total mass of the catalyst. In this embodiment, the metal oxide is an oxide of manganese, which is an effective substance for catalyzing the decomposition of nitrogen oxides. The temperature in the baking step may be set to 200 to 1000 ℃, and may be, for example, 200, 400, 600, 800, or 1000 ℃. In this example, the catalyst is preferably 600 ℃, and the inventors have found through many experiments that the mass ratio of the metal oxide in the obtained catalyst is the highest when the calcination temperature is 600 ℃. Preferably, after calcination, the catalyst may also be ground to a powder for subsequent use.
The catalyst can efficiently decompose the nitrogen oxide at room temperature without heating, and NO polluting gases such as NO and the like are generated in the decomposition process, so the catalyst is sanitary and environment-friendly.
An embodiment of the present invention further provides an indoor unit of an air conditioner, and fig. 2 is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention; fig. 3 is a schematic side view of an air conditioning indoor unit according to an embodiment of the present invention; fig. 4 is a schematic front view of an air conditioning indoor unit according to an embodiment of the present invention; fig. 5 is a schematic bottom view of an air conditioning indoor unit according to an embodiment of the present invention; FIG. 6 is a schematic cross-sectional view taken along section line A-A in FIG. 4; fig. 7 is a schematic structural exploded view of an air conditioning indoor unit according to an embodiment of the present invention. Referring to fig. 2 to 7, an air conditioning indoor unit 1 according to an embodiment of the present invention includes a casing 10, a heat exchanging device 20 disposed in the casing 10, a fan assembly 30 disposed in front of the heat exchanging device 20, at least one ion wind generating device 40, and at least one purifying device 50.
The cabinet 10 has at least one intake vent 120 and at least one outtake vent at a front side thereof, and in the present embodiment, the outtake vent includes: a lower outlet 111 at the lower part of the casing 10, and a first lateral outlet 112 and a second lateral outlet 113 at two sides of the casing 10 and facing the lateral front of the casing 10. Specifically, the design of the orientation of each air outlet of the invention can be such that: the wind sent out through the first side wind outlet 112 and the second side wind outlet 113 is blown to the side front of the cabinet 10, and the wind sent out through the lower wind outlet 111 is blown to the lower front of the cabinet 10. That is, the air sent out from each air outlet can directly reach the normal moving area of the user, thereby forming the effect of air supply from the left, the right and the lower surfaces, weakening the limit on the installation position of the indoor unit 1 of the air conditioner, increasing the air supply angle of the indoor unit 1 of the air conditioner, enlarging the air supply range and improving the cooling/heating efficiency.
Meanwhile, the special design of the present invention, in which the air inlet 120 is disposed at the front side of the casing 10 and the fan assembly 30 is disposed at the rear side of the heat exchanging device 20, not only can better support the fan assembly 30, but also can allow the indoor unit 1 of the air conditioner to be installed at a position where there is no gap between the top of the indoor unit and the ceiling. That is, even if the top of the indoor unit 1 abuts against the indoor wall, the indoor unit can still normally enter and exit air, so that the limitation on the installation position is further weakened, the installation flexibility is improved, and the use environment is expanded.
The heat exchanging device 20 is configured to exchange heat with air flowing therethrough to change the temperature of the air flowing therethrough into cold air or hot air. The fan assembly 30 is configured to urge the air heat-exchanged by the heat exchanging device to flow toward the air outlet. In particular in the present embodiment, configured to urge air to flow towards the lower outlet 111, the first lateral outlet 112 and the second lateral outlet 113, respectively.
The ion wind generating devices 40 are respectively disposed on a flow path from the fan assembly 30 to any one or more air outlets in the enclosure 10, and are configured to promote the air after heat exchange by the heat exchanging device 20 to flow toward the air outlets via the air duct of the fan assembly 30 by an electric field force. In the present embodiment, the ion wind generating device 40 includes: the first ion wind generating device 41 and the second ion wind generating device 42 are respectively disposed on a flow path from the fan assembly 30 to the first lateral wind outlet 112 and the second lateral wind outlet 113 in the enclosure 10, and are configured to cause the air after heat exchange by the heat exchanging device 20 to respectively flow toward the first lateral wind outlet 112 and the second lateral wind outlet 113 via the wind channel of the fan assembly 30 by an electric field force. That is, two ion wind generating devices may be located at both lateral sides of the fan assembly 30, so that the thickness of the air conditioning indoor unit 1 in the front and rear direction may be reduced. More importantly, the fan assembly 30 and the two ion wind generating devices supply air to the three air outlets, so that on one hand, the whole air supply quantity and the air supply speed of the indoor unit 1 of the air conditioner are ensured, and on the other hand, the two ion wind generating devices make particles in the air obtain kinetic energy by virtue of electric field force, and ion wind is formed. Compared with a rotary air supply assembly (such as a fan), the ion wind generating device has the advantages of pressure loss, low energy consumption, low noise and the like. Compared with the condition that the fan is used for supplying air, the invention reduces the whole noise of the air conditioner indoor unit 1 during operation to a certain extent. Meanwhile, the ion wind generated by the ion wind generating device is not generated by pressure, but is a soft wind close to nature generated by electric field force, so that the comfort level of the air-conditioning indoor unit 1 can be improved. In addition, since the ion wind is formed by a high-voltage electric field, it has the function of sterilizing and decomposing harmful gas pollutants with high efficiency.
The purification device 50 contains the catalyst, is disposed on a flow path from each ion wind generating device 40 to the corresponding outlet, and is configured to remove nitrogen oxides in the air to purify the air. In the present embodiment, the purification device 50 includes a first purification device 51 and a second purification device 52, which are respectively disposed on the flow path from each ion wind generation device 40 to the corresponding outlet, and are configured to respectively remove nitrogen oxides in the air flowing out from the first ion wind generation device 41 and the second ion wind generation device 42. That is, the first purifying device 51 is provided outside the first ion wind generating device 41, and the second purifying device 52 is provided outside the second ion wind generating device 42. Since the ion wind generating device 40 is internally provided with a high-voltage discharge device, a certain amount of harmful gas (mainly nitrogen oxides) is generated during the operation of the ion wind generating device 40. In order to prevent these gases from being discharged from the air conditioning indoor unit 1, in the present embodiment, a cleaning device 50 is provided outside each ion wind generating device 40 to remove the above-mentioned harmful gases and improve the air cleanliness.
The air-conditioning indoor unit 1 of the invention is characterized in that the structures and the positions of the air inlet, the air outlet, the heat exchange device, the fan assembly and the two ion wind generating devices are specially designed and reasonably arranged, and the ion wind blowing technology staying on a theoretical level for a long time is originally improved, so that the ion wind blowing technology is perfectly combined with the fan type blowing components, and the technical problems of small blowing range, large noise, poor experience effect, poor appearance effect and the like in the prior art are solved by a simple structure. Meanwhile, the technical scheme of the invention has better realizability and economic value, is an innovation of the air supply form of the air conditioner and has better popularization value.
In some embodiments of the present invention, referring to fig. 4, an inner side edge 1121 of the first lateral air outlet 112, which is close to a vertical bisecting plane S extending in the front-rear direction of the air conditioning indoor unit 1, is located more forward than an outer side edge 1122 of the first lateral air outlet 112, which is far from the vertical bisecting plane S, so that the first lateral air outlet 112 faces the outer side front of the casing 10. That is, the inner edge 1121 and the outer edge 1122 of the first lateral air outlet 112 are located at different positions in the lateral direction and the front-rear direction, the inner edge 1121 is closer to the vertically bisected plane of the air conditioning indoor unit 1 extending in the front-rear direction than the outer edge 1122 thereof, and the inner edge 1121 is located laterally forward of the outer edge 1122 thereof, so that the first lateral air outlet 112 is directed obliquely outward toward the front of the cabinet.
Further, the second lateral air outlet 113 and the first lateral air outlet 112 are symmetrically disposed. That is, the inner edge 1131 of the second lateral outlet 113 is more forward than the outer edge 1132 of the second lateral outlet 113. In other words, the inside edge 1131 and the outside edge 1132 of the second lateral air outlet 113 are located at different positions in the lateral direction and the front-rear direction, the inside edge 1131 is closer to the vertical bisecting plane S of the indoor unit 1 extending in the front-rear direction than the outside edge 1132, and the inside edge 1131 is located laterally forward of the outside edge 1132, so that the second lateral air outlet 113 faces obliquely outward toward the front of the cabinet.
Therefore, the three air outlets of the indoor air conditioner 1 can supply air towards the front of the transverse outer side of the casing 10 and the front of the lower part of the casing respectively to form an encircling air supply effect, so that the air supply range of the indoor air conditioner 1 is further expanded, cold air or hot air is prevented from being directly blown to a human body, the uniformity of indoor temperature is improved, the comfort level of the indoor air conditioner 1 is further improved, and the use experience of a user is better.
In some embodiments of the present invention, referring to fig. 7, the air conditioning indoor unit 1 further includes a first air guiding channel 61 and a second air guiding channel 62, and the first air guiding channel 61 and the second air guiding channel 62 respectively extend from the inside of the casing 10 to the first lateral air outlet 112 and the second lateral air outlet 113 in a bending manner, so as to respectively guide air flowing to the first lateral air outlet 112 and the second lateral air outlet 113 through the air duct of the fan assembly 30. Therefore, the air sent out from the two lateral air outlets can be blown to the left front side and the right front side of the shell, the air-conditioning indoor unit 1 can be further ensured to form an encircling air supply effect, the resistance in the air flow flowing process can be reduced, and the air speed and the air volume of the two lateral air outlets are improved.
In some embodiments of the present invention, the first wind guiding channel 61 is a column shape, which extends along a circular arc curve from inside to outside. It will be understood by those skilled in the art that the terms "inner" and "outer" as used herein refer to both the interior and exterior of the enclosure 10. The second air guiding channel 62 and the first air guiding channel 61 are symmetrically arranged, that is, the second air guiding channel 62 is also tubular, and the cross section of the second air guiding channel extends along the same circular arc-shaped curve from inside to outside. The circle center of the circle of the circular arc curve is positioned at the front side of the circular arc curve, namely the circular arc curve has a shape which is convexly curved backwards. Therefore, airflow can flow more smoothly, airflow resistance is further reduced, and the air speed and the air volume of the lateral air outlet are improved; and the first lateral air outlet 112, the second lateral air outlet 113 and the lower air outlet 111 can more easily form a looping air supply effect, so that the indoor unit 1 of the air conditioner is ensured to have the best comfort level.
In some embodiments of the present invention, referring to fig. 2 and 3, the cabinet 10 includes a rear case 14 for constituting a rear portion thereof and a front panel 13 for constituting a front portion thereof. The front panel 13 is configured to be pivotably connected to the front side of the rear housing 14 in the front-rear direction about its bottom pivot axis extending in the lateral direction to form an air intake opening 120 of the cabinet 10 between the front panel 13 and the rear housing 14 when the front panel 13 is controllably pivoted forward about its bottom pivot axis to an open position.
Specifically, the bottom of the front panel 13 is pivotably connected to the bottom front side of the rear housing 14 in the front-rear direction, and the front panel 13 is configured to be controllably pivoted between its open position and closed position. When the air conditioning indoor unit 1 is started, the front panel 13 is controllably pivoted forward about its bottom pivot axis to the open position, so that the air inlet opening 120 of the cabinet 10 is formed at the upper portion and both lateral side portions between the front panel 13 and the rear casing 14. When the front panel 13 is controllably pivoted backward about its bottom pivot axis to the closed position after the air conditioning indoor unit 1 stops operating, the circumferential edge of the front panel 13 abuts against at least a part of the circumferential edge of the rear casing 14 and the edges of other components, so that the air inlet 120 of the cabinet 10 disappears. Therefore, the front panel 13 is specially designed, so that a normal air inlet can be formed at the front side of the air-conditioning indoor unit 1 when the air-conditioning indoor unit 1 operates, and the shell 10 of the air-conditioning indoor unit 1 can form a whole with a compact structure and a uniform appearance when the air-conditioning indoor unit 1 stops operating, so that the occupied space of the air-conditioning indoor unit 1 in a non-operating state is reduced, and the appearance effect of the air-conditioning indoor unit is improved.
In some embodiments of the present invention, the cabinet 10 further includes a first side air duct 151 and a second side air duct 152. The first side air duct 151 and the second side air duct 152 are respectively located at two lateral ends between the rear casing 14 and the front panel 13, that is, the first side air duct 151 and the second side air duct 152 are both located in a space defined between the rear casing 14 and the front panel 13 and are respectively located at two lateral ends of the space. The outer ports of the first and second side air ducts 151 and 152 form the first and second lateral outlets 112 and 113, respectively. Since the inner edge 1121 of the first lateral outlet 112 is located more forward than the outer edge 1122 thereof, the inner edge 1121 and the outer edge 1122 of the first lateral outlet 112 are the front edge and the rear edge of the outer port of the first lateral air duct 151, respectively. Similarly, the inner edge 1131 and the outer edge 1132 of the second lateral air outlet 113 are the front edge and the rear edge of the outer port of the second lateral air duct 151, respectively.
It should be emphasized that the outer side ports of the first and second side air guiding drums 151 and 152 are referred to as their respective ports exposed to the outside of the casing 10, and accordingly, the first and second side air guiding drums 151 and 152 also respectively have inner side ports hidden in the inside of the casing 10, and the two inner side ports are respectively connected with two lateral air outlets (i.e. the volute air outlets of two centrifugal fans described later) of the fan assembly 20. Specifically, the first side air duct 151 and the second side air duct 152 may be respectively fixed with the fan assembly at the inner ports thereof by screwing, clipping, or other suitable means.
Further, the rear case 14 may have a body 141 extending vertically, and upper and lower edge portions 142 and 143 extending forward from upper and lower sides of the body 141. The body 141 may be provided with a hanging hole for hanging the indoor unit 1 of an air conditioner on a wall. The lower outlet 111 may be formed at the lower edge 143 of the rear case 14 in a bar shape extending in the lateral direction.
Further, the first wind guiding channel 61 and the second wind guiding channel 62 are respectively formed inside the first side wind guiding cylinder 151 and the second side wind guiding cylinder 152, the first ion wind generating device 41 and the first purifying device 51 are located in the first wind guiding channel 61, and the second ion wind generating device 42 and the second purifying device 52 are located in the second wind guiding channel 62, that is, the two ion wind generating devices 40 and the two purifying devices 50 are respectively located inside the two side wind guiding cylinders. Specifically, the first side air duct 151 may be a tubular body that is bent and extended along the arc-shaped curve from one of the lateral air outlets of the fan assembly 30 (for example, a volute air outlet of the first centrifugal fan 31) to the first lateral air outlet 112, and the tubular body defines the first air guiding channel 61 therein. Similarly, the second side air duct 152 may be a tubular body that is bent and extended along the arc-shaped curve from another lateral air outlet (for example, a volute air outlet of the second centrifugal fan 32) of the fan assembly 30 to the second lateral air outlet 113, and the second air guiding channel 62 is defined in the tubular body. The first ion wind generating device 41 and the first purifying device 51 are disposed in the first side air duct 151, and the second ion wind generating device 42 and the second purifying device 52 are disposed in the second side air duct 152. Preferably, the ion wind generating device 40 and the corresponding purification device 50 may also be connected without a gap. Thus, the width of the air conditioning indoor unit 1 in the lateral direction can be reduced to further reduce the size of the space occupied by the air conditioning indoor unit.
In some embodiments of the present invention, the front edges of the outside ports of the first and second side air guiding ducts 151 and 152 are respectively matched with the edge shapes of the two lateral sides of the front panel 13, and the edges of the outside ports of the first and second side air guiding ducts 151 and 152 except the front edges are respectively matched with the edge shapes of the two lateral sides of the rear housing 14. That is, the front edges of the outside ports of the first and second side air ducts 151 and 152 are respectively matched with the edge shapes of the two lateral sides of the front panel 13, and the edges of the outside ports of the first and second side air ducts 151 and 152 except the front edges are respectively matched with the edge shapes of the two lateral sides of the rear case 14. Therefore, the structure of the air-conditioning indoor unit 1 can be simplified, and the appearance consistency and the integral effect of the air-conditioning indoor unit 1 can be enhanced.
In some embodiments of the present invention, the fan assembly 30 and the first and second ion wind generating devices 41 and 42 are configured to be selectively activated to operate the indoor unit 1 in a fast cooling/fast heating mode in which the air supply is driven only by the fan assembly 30 or a mute mode in which the air supply is driven only by the first and second ion wind generating devices 41 and 42. The lower outlet 111 is provided with a movable air deflector 114, and the movable air deflector 114 is configured to controllably open the lower outlet 111 in a rapid cooling/rapid heating mode and controllably close the lower outlet 111 in a silent mode. That is to say, the controllable movable air deflector 114 is arranged at the lower air outlet 111, and the start and stop of the fan assembly 30 and the two ion wind generating devices are controlled, so that the air-conditioning indoor unit 1 at least has two working modes of rapid cooling/rapid heating and silencing, thereby simultaneously meeting multiple use requirements of different users or the same user under different conditions and improving the use experience of the user. Meanwhile, the controllable movable air deflector 114 can prevent an undesired air path from being formed inside the casing 10 or prevent air flow from leaking outside, thereby ensuring that a certain pressure can be formed inside the casing 10 in both modes (from the silent mode), and further improving the air speed and the air volume of the corresponding air outlet.
Specifically, in the rapid cooling/rapid heating mode, the two ion wind generating devices are not started to operate, and the movable air deflector 114 is controlled to open the lower air outlet 111. The air-conditioning indoor unit simultaneously drives air supply to the lower air outlet 111 and the two side air outlets only through the fan assembly 30. Since the fan assembly 30 has a relatively large air supply amount and a relatively high cooling efficiency or heating efficiency, the indoor temperature can be rapidly relieved. This mode is suitable for the case where the air conditioning indoor unit 1 starts to operate or other cases where rapid cooling or heating is required. In the silent mode, the fan assembly 30 is not started to operate, and the movable air deflector 114 is controlled to close the lower air outlet 111. The air conditioner indoor unit drives the air supply to the two side air outlets only through the two ion wind generating devices, on one hand, the air is simultaneously supplied through the two side air outlets, the air supply range is expanded, and the air supply quantity is improved; on the other hand, the working noise of the ion wind generating device in operation is close to or even lower than the indoor background noise, the integral noise of the indoor unit 1 of the air conditioner in operation is greatly reduced, and the industrial problem of ultra-low silence air supply is solved. The mode is suitable for use environments such as medical treatment and child monitoring, and the situation that the indoor unit 1 of the air conditioner runs for a period of time.
Of course, in other embodiments of the present invention, the indoor unit 1 may have a high-speed air supply mode in addition to the rapid cooling/rapid heating mode and the mute mode. In this mode, the fan assembly 30 and the two ion wind generating devices can be controlled to start and operate simultaneously to supply air to the three air outlets simultaneously. The mode is suitable for the situations of more rapid cooling or rapid heating and other situations with higher requirements on wind speed.
In some embodiments of the present invention, referring to fig. 5 and 7, the fan assembly 30 includes two centrifugal fans, such as a first centrifugal fan 31 and a second centrifugal fan 32, arranged side by side in the transverse direction. The first centrifugal fan 31 and the second centrifugal fan 32 may be forward-direction centrifugal fans or backward-direction centrifugal fans. The heat exchange device 20 is a flat plate evaporator to improve heat exchange efficiency and reduce the thickness of the indoor unit 1 in the front-rear direction, thereby reducing the volume of the indoor unit 1. The width of the evaporator in the transverse direction is approximately equal to the sum of the widths of the two centrifugal fans in the transverse direction, so that the air subjected to heat exchange by the evaporator flows into the air ducts of the two centrifugal fans.
Further, a fixing bracket 80 for fixing the heat exchanging device 20 may be disposed between the fan assembly 30 and the heat exchanging device 20, and the heat exchanging device 20 and the fixing bracket 80, and the fixing bracket 80 and the rear housing 14 may be fixed together by screw connection, clamping connection, or other suitable connection methods. A motor fixing plate 90 is further arranged between the fixing bracket 80 and the front panel 13, and a motor for driving the centrifugal impellers of the two centrifugal fans to rotate is fixed on the motor fixing plate 90.
Fig. 6 is a schematic cross-sectional view taken along a sectional line a-a in fig. 4. Referring to fig. 6, in some embodiments of the present invention, the fan assembly 30 includes a bottom air guiding channel 33 for guiding air to flow to the lower air outlet 111, and the bottom air guiding channel 33 extends from top to bottom forward to a bent portion and then vertically downward to the lower air outlet 111, so that the lower air outlet 111 blows air in a range of 0-85 ° below a horizontal plane where the lower air outlet is located. Specifically, after being guided by the bottom air guide passage 33, the lower air blowing port 111 can blow air in a region between a broken line m and a broken line n in fig. 6, where a curved arrow between the broken line m and the broken line n is a substantial flow direction of the air flow. Therefore, when the air-conditioning indoor unit 1 heats, the lower air outlet 111 can blow down hot air which forms an angle of 85 degrees with the horizontal plane, thereby overcoming the technical problems that the hot air is easy to rise and is difficult to blow down.
Further, referring to fig. 7, the first centrifugal fan 31 and the second centrifugal fan 32 have their respective volutes and centrifugal impellers accommodated in the volutes, respectively. An air inlet is formed in one side, facing the heat exchange device 20, of the volute, a fan lining plate 34 is arranged on one side, facing away from the heat exchange device 20, of the volute, and the fan lining plate 34 and the volutes of the two centrifugal fans jointly form an air channel of the fan assembly 30. The air outlet of the volute 311 of the first centrifugal fan 31 and the air outlet of the volute 321 of the second centrifugal fan 32 face away from each other toward the two lateral sides of the casing 10. Specifically, the air outlet of the volute 311 of the first centrifugal fan 31 faces the left side of the casing 10, i.e. the side where the first lateral air outlet 112 is located, and the air outlet of the volute 321 of the second centrifugal fan 32 faces the right side of the casing 10, i.e. the side where the second lateral air outlet 113 is located. The volute 311 of the first centrifugal fan 31 and the volute 321 of the second centrifugal fan 32 are independent from each other, so that the airflows blowing to the first lateral air outlet 112 and the second lateral air outlet 113 are independent from each other and do not affect each other, thereby avoiding airflow disorder.
When the air conditioning indoor unit 1 is driven by the fan assembly 30 to supply air, under the driving of the centrifugal impeller, ambient air flows to the heat exchanging device 20 through the air inlet 120, cold air or hot air after heat exchange by the heat exchanging device 20 enters the air duct of the fan assembly 30 through the volute air inlets of the first centrifugal fan 31 and the second centrifugal fan 32, and finally flows to the first lateral air outlet 112, the second lateral air outlet 113 and the lower air outlet 111 through the volute 311 air outlet of the first centrifugal fan 31, the volute 321 air outlet of the second centrifugal fan 32 and the bottom air guiding channel 33, respectively, so as to achieve the effect of surrounding air outlet on the left side, the right side and the lower side.
When the air conditioning indoor unit 1 has only two ion wind generating devices to drive the air supply, under the action of the electric field force, the ambient air flows to the heat exchanging device 20 through the air inlet 120, the cold air or the hot air after heat exchange by the heat exchanging device 20 enters the air duct of the fan assembly 30 through the volute air inlets of the first centrifugal fan 31 and the second centrifugal fan 32, and finally flows to the first lateral air outlet 112 and the second lateral air outlet 113 through the volute 311 air outlet of the first centrifugal fan 31 and the volute 321 air outlet of the second centrifugal fan 32, so that the left and right two-sided surrounding air supply effect is realized. At this time, the centrifugal impeller of the fan assembly does not produce any driving action.
Therefore, the two working modes of independently driving air supply by the fan assembly 30 and independently driving air supply by the two ion air generating devices can share the air duct of the fan assembly 30, so that the structure of the indoor unit 1 of the air conditioner is simplified, and the volume of the indoor unit is reduced.
The first ion wind generating device 41 and the second ion wind generating device 42 are respectively arranged at the air outlet of the volute 311 of the first centrifugal fan 31 and the air outlet of the volute 321 of the second centrifugal fan 32, so that the thickness of the indoor air conditioner 1 in the front-back direction is further reduced, the appearance effect of the indoor air conditioner 1 is optimized, and the requirement of a user on a small installation space of the indoor air conditioner 1 is met.
Fig. 8 is a schematic exploded view of a discharge module of the ion wind generating device according to an embodiment of the present invention. In some embodiments of the present invention, referring to fig. 8, each of the first ion wind generating device 41 and the second ion wind generating device 42 includes at least one discharge module 410. Each discharge module 410 has a metal mesh 411 and a plurality of discharge needles 412 located inside the metal mesh 411 and arranged in an array. The needle point of the discharge needle 412 is close to the metal net 411, positive and negative high voltage electrodes are respectively applied on the discharge needle 412 and the metal net 411, the discharge needle 412 is equivalent to a radiation electrode for generating corona discharge, and the metal net 411 is equivalent to a receiving electrode.
It should be emphasized that the inner side referred to herein means a side of the metal net 411 toward the geometric center of the cabinet 10, and the outer side opposite to the inner side means a side of the metal net 411 toward the outside of the cabinet 10. That is, the flow direction of the ion wind generated by each discharge module 410 is from the inside to the outside, and the arrangement direction of the plurality of discharge needles 412 and the metal mesh 411 is the same as the flow direction of the ion wind.
Fig. 9 is a schematic cross-sectional view of a discharge module according to an embodiment of the present invention. Referring to fig. 9, in order to increase the blowing speed of the ion wind generating apparatus, the designer of the present invention has performed a number of wind speed measurement experiments, and as a result of the experiments, it was found that the distance L between the tip of each discharge needle 412 and the metal mesh 411 is set to satisfy L ═ aL1(wherein a is any constant in the range of 0.7-1.3, i.e. a can be 0.7, 0.8, 0.9, 1.0, 1.1, 1.2 or 1.3, L1So that the wind speed of the ion wind at the wind speed center point of the metal mesh 411 reaches the maximum wind speed VmaxThe distance between the needle point of the discharge needle 412 and the metal mesh 411, and the wind speed center point of the metal mesh 411 is the projection point of the needle point of the discharge needle 412 on the metal mesh 411), on the one hand, the wind speed of the ion wind generated by the two ion wind generating devices can better meet the normal use requirement of a user, and on the other hand, the discharge needle 412 can be partially overlapped in the area of the metal mesh 411 generating effective ion wind to achieve the projection effect of the shadowless lamp, so that the ion wind distribution of the metal mesh 411 is more uniform.
In order to increase the amount of air supplied to the ion wind generating apparatus, the designer of the present invention has performed a large number of experiments for measuring the projection radius of the tips, and as a result of the experiments, it has been found that the distance R between the tips of two adjacent discharge needles 412 is set to satisfy the requirement of R ═ aR1(wherein, R1For the wind speed to reach the maximum wind speed VmaxB times the distance between the wind speed measuring point and the wind speed central point, wherein b is any constant in the range of 0.3-0.7, namely b can be 0.3, 0.4, 0.5, 0.6 or 0.7, and the value of a is the same as the above), the air volume of the ion wind generated by the two ion wind generating devices can better meet the normal use requirement of a user. Meanwhile, the distance between two adjacent discharge needles 412 is specially designedThe wind speed can be prevented from being mutually offset due to too close distance between two adjacent discharge needles 412, and the wind volume can be prevented from being reduced and the wind volume can be prevented from being unevenly distributed due to too far distance between two discharge needles 412.
Therefore, the ion wind generating device can generate the ion wind with uniform and large wind quantity by reasonably designing the spatial position relationship between the discharge needles 412 and the metal mesh 411 and reasonably arranging the position relationship between the discharge needles 412, so that the wind speed, the wind quantity and the wind efficiency of the ion wind generating device are improved.
In some embodiments of the present invention, each of the first ion wind generating device 41 and the second ion wind generating device 42 includes a plurality of discharging modules 410 arranged in sequence and connected in parallel or in series, and each of the discharging modules 410 has a metal mesh 411 and a plurality of discharging needles 412 located inside the metal mesh 411 and arranged in an array. Therefore, a corona discharge phenomenon is generated between the discharge needle 412 in each discharge module 410 and the corresponding metal mesh 411, so that the ion wind can be accelerated for multiple times through the plurality of discharge modules 410, the superposition of the wind speed can be realized, and the higher wind outlet speed can be obtained. And negative pressure can be formed under the action of high-speed air outlet, so that the air inlet volume is further increased, and the air supply speed, the air supply volume and the air supply efficiency of the multi-stage ion air supply module are improved.
In some embodiments of the present invention, the discharge needles 412 of two adjacent discharge modules 410 are arranged in a straight pair, that is, the projections of the discharge needles 412 of each two adjacent discharge modules in the air outlet plane of the ion wind generating device coincide. Therefore, a larger and stronger electric field is generated in the region corresponding to the tip of each discharge needle 412, so that an ion wind with a higher local wind speed is generated in the region, and the ion wind blows on the user body and has a stronger wind feeling. In other words, this arrangement can obtain a local large wind speed near each wind speed center point of the metal mesh 411, so as to improve the wind feeling when the air-conditioning indoor unit 1 is driven by the ion wind generating device to supply wind alone.
In some alternative embodiments of the present invention, the discharge needles 412 of two adjacent discharge modules 410 are arranged in a staggered manner. One of the dislocation arrangement modes is as follows: the discharge needles 412 of every two adjacent discharge modules are arranged in a staggered manner in a direction perpendicular to the air outlet surface of the ion wind generating device 10, and the projections of the corresponding discharge needles 412 of every two adjacent discharge modules in the air outlet surface of the ion wind generating device 10 are on the same horizontal line (i.e., the discharge needles 412 of every two adjacent discharge modules are arranged in a staggered manner, but the heights of the corresponding discharge needles 412 are the same). Therefore, uniform soft wind can be generated in a plurality of linear regions in the horizontal direction, and the superposition of a plurality of discharge modules can form a larger and stronger electric field in the linear regions, so that the wind speed of the ion wind in the linear regions is relatively higher. Further, the projections of each group of three adjacent discharge needles formed by the discharge needles 412 of the plurality of discharge modules in the horizontal plane all form an isosceles triangle, so as to ensure that the ion wind generated by the ion wind generating device is distributed uniformly.
Another staggered arrangement mode is as follows: the discharge needles 412 of every two adjacent discharge modules are arranged in a staggered manner in the direction perpendicular to the air outlet surface of the ion wind generating device and in the vertical direction. Therefore, the ion wind generated by the ion wind generating device can be uniformly distributed in the wind outlet surface of the ion wind generating device, so that soft, uniform and large-wind-volume air supply can be realized under the conditions of low voltage, low electric field intensity and low power. That is, the discharge needles 412 of each two adjacent discharge modules 410 are staggered from each other, so that the gaps between the discharge needles 412 of each discharge module 410 can be filled. Accordingly, relatively uniform ion wind can be formed in the entire area of the expanded metal 411, and the entire amount of wind can be increased. Further, the projections of each group of three adjacent discharge needles formed by the discharge needles 412 of the plurality of discharge modules in the air outlet surface of the ion wind generating device all form an equilateral triangle, so as to ensure that the ion wind generated by the ion wind generating device is distributed more uniformly.
In some embodiments of the present invention, referring to fig. 8, each discharge module 410 further includes a housing 416, a conductive metal strip 413 having a plurality of conductive metal strips 414, and at least one PCB multi-layer board 415 electrically connected to the conductive metal strip 413 and perpendicular to the conductive metal strip 413. The PCB multi-layer board 415 has front and rear insulating protective layers and a conductive layer between the two insulating protective layers, and the conductive layer is electrically connected to the conductive metal sheet 414. The bottom wall of the housing 416 is opened with a buckle 4161, and the metal conductive sheet 414 of the metal conductive strip 413 is buckled in the buckle 4161 of the housing 416.
The number of PCB multi-layer boards 415 may be one, which is substantially rectangular; or the number of PCB multi-layer boards 415 may be plural, each PCB multi-layer board 415 having an elongated strip shape extending perpendicular to the metal conductive strips 413.
The plurality of discharge needles 412 are uniformly distributed on the outer side of the at least one PCB multi-layer board 415 facing the metal mesh 411. Specifically, each PCB multi-layer board 415 is provided with a plurality of pin holes on the outer surface thereof for mounting the discharge needles 412. The aperture of the pinhole is slightly smaller than the diameter of the discharge needle 412 so that the pinhole is in interference fit with the discharge needle 412. The filling layer filled by the welding process is arranged around the pin hole inserted into the discharge needle 412, that is, the filling layer filled by the welding process is arranged around the discharge needle 412 of the pin hole, so as to ensure that the discharge needle 412 is well electrically connected with the conductive layer in the PCB multi-layer board 415, and simultaneously, the conductive layer can be strictly prevented from being exposed to the outside, thereby avoiding the phenomena of random discharge or sparking.
Fig. 10 is a schematic structural view of a purification apparatus 50 according to an embodiment of the present invention. The purification apparatus 50 in the present embodiment includes: a frame 501 and a mesh cylindrical core 502. The mesh-cylindrical core 502 is disposed in the region defined by the frame 501, and is configured to adsorb nitrogen oxides in the air. The mesh cylindrical core 502 has a plurality of through holes extending in the thickness direction of the purification apparatus 50. The cross section of the through hole can be rectangular, parallelogram or regular hexagon. In this embodiment, the mesh tubular core 502 is preferably made of a honeycomb-shaped activated carbon material, which has a good adsorption effect on nitrogen oxides in the air, and the mesh tubular core 502 can adsorb dust in the air to purify the air flowing out from the air conditioning indoor unit 1.
The purification apparatus 50 also contains the catalyst. The catalyst may be coated on the inner side surface of the frame 501 facing the mesh cylindrical core 502, or may be coated on the inner wall surface of the through-holes of the mesh cylindrical core 502 in a powder state, and the catalyst can be used to accelerate the decomposition of nitrogen oxides. In addition, in the embodiment, the thickness of the purifying device 50 is preferably 10mm to 60mm, so that the purifying device 50 can have a good purifying effect and is relatively thin, and the accommodating space inside the indoor unit 1 of the air conditioner is saved.
It should be understood by those skilled in the art that, unless otherwise specified, terms used to indicate orientation or positional relationship in the embodiments of the present invention such as "upper", "lower", "inner", "outer", "lateral", "front", "rear", and the like are based on the actual usage state of the air conditioning indoor unit 1, and these terms are only used to facilitate description and understanding of the technical solutions of the present invention, and do not indicate or imply that the devices or components referred to must have specific orientations, and therefore, should not be construed as limiting the present invention.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (8)
1. An indoor unit of an air conditioner, comprising:
a housing having at least one air inlet and at least one air outlet;
the heat exchange device is arranged in the shell and is configured to exchange heat with air flowing through the shell;
the fan assembly is arranged on the rear side of the heat exchange device and is configured to promote the air subjected to heat exchange by the heat exchange device to flow towards the air outlet;
at least one ion wind generating device, which is respectively arranged on the flow path from the fan assembly to any one or more air outlets in the casing and is configured to impel the air after heat exchange by the heat exchange device to flow towards the air outlets via the air duct of the fan assembly by electric field force; and
at least one purification device, which is arranged on the flow path from each ion wind generation device to the corresponding air outlet, contains a catalyst inside, and is configured to remove nitrogen oxides in the air so as to purify the air;
the catalyst is used for accelerating the decomposition of the nitrogen oxides, and the manufacturing method of the catalyst comprises the following steps:
preparing metal nitrate or acetate or sulfate into solution;
adding a precipitant into the salt solution, and stirring for a preset time to enable the metal ions to form solid precipitates; and
filtering the solution to obtain the solid precipitate, and roasting the solid precipitate to obtain the catalyst; wherein the mass of the metal oxide in the catalyst is 10-50% of the total mass of the catalyst;
the ion wind generating device includes: the discharge modules are sequentially arranged and connected in parallel or in series, each discharge module is provided with a metal net and a plurality of discharge needles which are positioned on the inner side of the metal net and arranged in an array manner, and the discharge needles of two adjacent discharge modules are arranged in a straight-line opposite manner or in a staggered manner; wherein
The distance L between the needle point of each discharge needle and the metal mesh is set to satisfy the following conditions: l ═ aL1Wherein a is any constant in the range of 0.7-1.3, L1In order to make the wind speed of the ion wind at the wind speed central point of the metal mesh reach the maximum wind speed VmaxThe distance between the needle point of the discharge needle and the metal mesh is equal to the distance between the needle point of the discharge needle and the metal mesh, and the wind speed central point of the metal mesh is a projection point of the needle point of the discharge needle on the metal mesh; the distance R between the needle points of two adjacent discharge needles is set to satisfy the following conditions: r ═ aR1Wherein R is1For the wind speed to reach the maximum wind speed VmaxB is any constant within the range of 0.3-0.7.
2. The indoor unit of air conditioner according to claim 1, wherein
The temperature of the baking step is set to 200 to 1000 ℃.
3. The indoor unit of air conditioner according to claim 1, wherein
The metal nitrate or acetate or sulfate contains the following metal elements: manganese or iron or aluminium or cobalt.
4. The indoor unit of an air conditioner according to claim 1, wherein the purification device includes:
a frame;
a mesh-cylindrical core disposed in a region defined by the frame, having a plurality of through holes extending in a thickness direction of the frame, and configured to adsorb nitrogen oxides in air flowing along the plurality of through holes; wherein
The frame is connected with the inner side of the net cylindrical core body, and the catalyst for accelerating the decomposition of nitrogen oxide is coated on the inner wall of the through hole.
5. The indoor unit of air conditioner according to any one of claims 1 to 4, wherein
The air inlet is arranged on the front side of the shell, and the air outlet comprises a lower air outlet positioned at the lower part of the shell and a first lateral air outlet and a second lateral air outlet which are respectively positioned at two sides of the shell and face the lateral front of the shell;
the fan assembly is configured to promote the air subjected to heat exchange by the heat exchange device to flow towards the lower air outlet, the first lateral air outlet and the second lateral air outlet respectively;
the ion wind generating device comprises a first ion wind generating device and a second ion wind generating device which are respectively arranged on the flow paths from the fan assembly to the first lateral air outlet and the second lateral air outlet in the shell and are respectively configured to enable the air subjected to heat exchange through the heat exchange device to respectively flow towards the first lateral air outlet and the second lateral air outlet through the air duct of the fan assembly by electric field force;
the purification device comprises a first purification device and a second purification device which are respectively arranged on a flow path from each ion wind generation device to the corresponding air outlet and are configured to respectively remove nitrogen oxides in air flowing out of the first ion wind generation device and the second ion wind generation device.
6. The indoor unit of an air conditioner according to claim 5,
the inner side edge of a vertical bisection plane of the first lateral air outlet, which extends in the front-rear direction and is close to the indoor unit of the air conditioner, is more forward than the outer side edge of the first lateral air outlet, which is far away from the vertical bisection plane, so that the first lateral air outlet faces the front of the outer side of the machine shell; and is
The second lateral air outlet and the first lateral air outlet are symmetrically arranged.
7. The indoor unit of claim 6, further comprising:
the first air guide channel and the second air guide channel respectively extend to the first lateral air outlet and the second lateral air outlet from the inner portion of the machine shell in a bending mode, so that air flowing to the first lateral air outlet and the second lateral air outlet through the air channel of the fan assembly is guided.
8. The indoor unit of claim 7, wherein the cabinet comprises:
a rear case for constituting a rear portion of the cabinet;
a front panel disposed at a front side of the rear case to constitute a front portion of the cabinet; and
the first side air duct and the second side air duct are respectively positioned at the two transverse ends between the rear shell and the front panel, and the first side air outlet and the second side air outlet are respectively formed at the outer side end openings of the first side air duct and the second side air duct; wherein
The first air guide channel and the second air guide channel are respectively formed inside the first side air guide cylinder and the second side air guide cylinder, the first ion wind generating device and the first purifying device are located in the first air guide channel, and the second ion wind generating device and the second purifying device are located in the second air guide channel.
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| CN201610935554.XA CN106563443B (en) | 2016-11-01 | 2016-11-01 | Manufacturing method of catalyst and air conditioner indoor unit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201037674Y (en) * | 2007-05-15 | 2008-03-19 | 王洪亮 | Anion air-cleaning facility for air conditioner |
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| CN103816918B (en) * | 2014-03-21 | 2015-11-18 | 中国科学院上海硅酸盐研究所 | Manganese oxide based absorption/the Catalysts and its preparation method of a kind of weak crystallized nano |
| CN104251519A (en) * | 2014-08-09 | 2014-12-31 | 北京玉珠峰科技有限公司 | Novel multifunctional air purifier |
| CN104324729B (en) * | 2014-10-08 | 2018-07-17 | 内江师范学院 | A kind of preparation method of flue gas low-temperature denitration cobalt and manganese oxide catalyst |
| CN105202660A (en) * | 2015-11-13 | 2015-12-30 | 无锡桥阳机械制造有限公司 | Central air conditioner with purification function |
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| CN101874964A (en) * | 2009-12-11 | 2010-11-03 | 北京科技大学 | Low temperature storage and reduction method for purifying oxynitrides |
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Effective date of registration: 20200910 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Co-patentee after: Qingdao Haier Parts Co., Ltd Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
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