Food waste disposer

Abstract

The present invention provides a food waste disposer for disposing of food waste, the food waste disposer having the function of minimizing the volume of food waste and removing foul smells by drying and stirring the food waste.

Description

food waste disposer

[0001] The present invention is a food waste disposer that processes food waste, and is a food waste disposer having a function of drying and stirring food waste to minimize the volume of food waste and eliminate bad odor.

[0002] Conventional food waste disposers have the problem that the steam generated during dry grinding contains an unpleasant odor and that the unpleasant odor does not disappear even after passing through the filter inside the food waste disposer, and in the summer when the outside temperature is relatively high, the food waste in the food waste disposer spoils quickly and causes an unpleasant odor.

[0003] As a related prior art document, Korean Patent No. 10-0499727 (July 5, 2005) is published.

[0004] The purpose of the present invention is to provide a food waste disposer that can store smoke generated during grinding and heating in the form of condensate and discharge it separately, and that has a refrigerated space before grinding and heating food waste to minimize the odor of food waste.

[0005] According to one aspect of the present invention for achieving the above technical task, a food waste disposer may include an input portion into which food waste is input; a lid for opening or closing the input portion; a refrigerated storage portion having at least one cooling portion so that the input food waste can be stored at a low temperature; a drying and stirring portion for drying food waste transferred from the refrigerated storage portion through a heating portion and cutting and crushing food waste through a stirring blade; and an opening and closing portion having at least one opening and closing means for transferring food waste stored in the refrigerated storage portion.

[0006] In addition, a food waste disposer according to one aspect of the present invention may further include a transport opening / closing unit having at least one opening / closing means for transporting food waste within the drying / stirring unit, and a storage container for storing food waste dried, cut, and crushed in the drying / stirring unit.

[0007] In addition, a food waste disposer according to one aspect of the present invention may further include a blower fan for transporting steam generated during the heating process of the drying stirring unit, a condenser for liquefying the steam transported by the blower fan, and a condensate storage unit for storing condensate liquefied in the condenser unit.

[0008] In addition, a food waste disposer according to one aspect of the present invention further includes a washing means capable of spraying washing water onto the dry stirring unit; the washing means includes a washing water pump and a washing water spray unit; the washing water stored in the washing water tank or condensate storage unit is pumped through a pump and sprayed onto the washing water spray unit connected to one side of the dry stirring unit, thereby spraying the water into the dry stirring unit, thereby washing the space within the dry stirring unit.

[0009] In addition, in the food waste disposer according to one aspect of the present invention, the pump for spraying the washing water can operate in interaction with the stirring blade of the dry stirring unit or spray the washing water alone.

[0010] In addition, the food waste disposer according to one aspect of the present invention can store food waste stored in the refrigerated storage section at a stage before the food waste disposer starts processing the food waste, and can operate only the cooling section during storage.

[0011] In addition, a food waste disposer according to one aspect of the present invention includes an opening / closing plate having a gear mountain formed on one side of the bottom of a refrigerated storage compartment, a driving gear engaged with the gear mountain of the opening / closing plate, and an opening / closing motor having a motor shaft coupled to rotate the driving gear forward or backward; when the opening / closing plate is rotated by the opening / closing motor, a discharge hole formed on the bottom of the refrigerated storage compartment can be opened / closed to control the transfer of food waste to the drying / stirring section.

[0012] In addition, in a food waste disposer according to one aspect of the present invention, the opening / closing unit includes an opening / closing motor to rotate longitudinally based on a horizontal central axis of the bottom of the refrigerated storage unit, and the opening / closing plate is rotated by the opening / closing motor so that food waste can be transferred to the drying stirring unit at the reverse position.

[0013] In addition, in a food waste disposer according to one aspect of the present invention, the opening / closing unit includes an opening / closing motor so that a check valve means for opening / closing a discharge hole on one side of the bottom of a refrigerated storage unit can move between a closed position and an open position, and the opening / closing motor can cause the check valve to open the discharge hole so that food waste can be transferred to a drying and stirring unit.

[0014] In addition, in a food waste disposer according to one aspect of the present invention, the transport opening / closing unit includes an opening / closing plate having a gear mountain formed on one side of the bottom of a dry stirring unit, a driving gear meshed with the gear mountain of the opening / closing plate, and an opening / closing motor having a motor shaft coupled to rotate the driving gear forward or backward; when the opening / closing plate is rotated by the opening / closing motor, a discharge hole formed at the bottom of the dry stirring unit can be opened / closed to control the transport of food waste to a receiving container.

[0015] In addition, in a food waste disposer according to one aspect of the present invention, the transport opening / closing unit includes an opening / closing motor to rotate longitudinally based on a horizontal central axis of the bottom of the drying stirring unit, and the opening / closing plate is rotated by the opening / closing motor so that food waste can be transferred to the receiving container at the reverse position.

[0016] In addition, a food waste disposer according to one aspect of the present invention includes an opening / closing motor so that a check valve means for opening / closing a discharge hole on one side of the bottom of a drying stirring part can be moved between a closed position and an open position, and the opening / closing motor can cause the check valve to open the discharge hole so that food waste can be transferred to a storage container.

[0017] In addition, the food waste disposer according to one aspect of the present invention may further include at least one rib on the inside of the dry stirring unit to interact with the stirring blade, thereby efficiently cutting and stirring food waste.

[0018] In addition, in a food waste disposer according to one aspect of the present invention, the refrigerated storage section is provided with an exhaust vent on one side of the upper portion and an intake vent on the other side of the upper portion, so that wind generated from the exhaust vent is sucked into the intake vent to form an air curtain, thereby preventing odors inside the food waste disposer from escaping to the outside.

[0019] In addition, a food waste disposer according to one aspect of the present invention may be equipped with a sensor that recognizes whether the lid is open or closed so that the air curtain can operate only when the lid is open.

[0020] In addition, in the food waste disposer according to one aspect of the present invention, the condensation unit liquefies vapor containing an odor and moves to a condensate storage unit, and purified air is circulated through an exhaust vent and an intake vent, so that a clean air curtain can be formed without a separate filter.

[0021] According to the present invention, a condenser is provided so that vapor containing an odor is liquefied in the condenser and stored in a water tank, and the remaining air in the condenser is purified through an exhaust vent and an intake vent, thereby having the effect of removing an odor without requiring a separate filter.

[0022] In addition, according to the present invention, food can be stored without being affected by the external temperature through refrigeration through a cooling unit when stored, and has the effect of maintaining a temperature that minimizes bad odor.

[0023] Figure 1 is a drawing showing the configuration of a food waste disposer of the present invention.

[0024] Figures 2 and 3 are drawings showing a process of storing and transporting food waste according to one embodiment of the present invention.

[0025] Figures 4 to 6 are drawings showing the shape of the opening and closing part of a food waste disposer according to one embodiment of the present invention.

[0026] FIG. 7 is a drawing showing the air flow structure of a food waste disposer according to one embodiment of the present invention.

[0027] The purpose and technical configuration of the present invention and the resulting operation and effects will be more clearly understood through a detailed description based on the drawings attached to the specification of the present invention.

[0028] The terminology used herein is merely used to describe specific embodiments and is not intended to limit the present invention. For example, terms such as "consist of" or "include" used herein should not necessarily be construed to include all of the various components or various steps described in the invention, but should be construed to mean that some of the components or some steps may not be included, or that additional components or steps may be included. Furthermore, the singular expression "a" or "an" as used herein includes the plural expression unless the context clearly dictates otherwise.

[0029] Hereinafter, the present invention will be described in detail by describing preferred embodiments thereof with reference to the attached drawings. The embodiments described below are provided to facilitate the technical concept of the present invention for those skilled in the art to understand, and should not be construed as limiting the present invention. It should be understood that the embodiments of the present invention will have various applications to those skilled in the art.

[0030] FIG. 1 is a drawing showing the configuration of a food waste disposer of the present invention, FIGS. 2 and 3 are drawings showing a process of storing and transporting food waste according to an embodiment of the present invention, FIGS. 4 to 6 are drawings showing the shape of an opening and closing part of a food waste disposer according to an embodiment of the present invention, and FIG. 7 is a drawing showing an airflow structure of a food waste disposer according to an embodiment of the present invention.

[0031] Referring to FIGS. 1 to 7, the food waste disposer according to the present invention has a problem that smoke generated during grinding and heating inside a container leaks outside, causing an unpleasant odor, and that food waste contained in a food waste disposer quickly spoils and causes an unpleasant odor in the summer when the outside temperature is relatively high. In order to solve this problem, the smoke generated during grinding and heating inside the food waste disposer is stored as condensate and can be discharged separately, and a refrigerated space is provided before the food waste is ground and heated, so that the unpleasant odor of the food waste can be minimized.

[0032] Looking at the configuration of the food waste disposer (100) according to the present invention, as shown in FIG. 1, it is provided with an input portion (101) into which food waste is input, a lid (117) for opening or closing the input portion (101), a refrigerated storage portion (110) having at least one cooling portion (111) so that the input food waste can be stored at a low temperature, a drying and stirring portion (120) for drying food waste transferred from the refrigerated storage portion (110) through a heating portion (121) and cutting and crushing it through a stirring blade (125), an opening and closing portion (115) having at least one opening and closing means for transferring food waste stored in the refrigerated storage portion (110), a transfer opening and closing portion (175) having at least one opening and closing means for transferring food waste in the drying and stirring portion (120), and a food waste drying, cutting and crushing portion (120) It may include a storage container (140).

[0033] Additionally, the cooling unit (111) of the refrigerated storage unit (110) can be applied with any technical structure that maintains the temperature low, such as a Peltier element or a compressor.

[0034] In addition, the heating unit (112) of the dry stirring unit (120) can be applied with any technical structure that heats to a high temperature, such as a Peltier element or a heating wire.

[0035] In addition, the food waste disposer (100) according to the present invention may further include a blower fan (137) that transfers steam generated during the heating process of the drying stirring unit (120), a condenser unit (130) that liquefies the steam transferred by the blower fan (137), and a condensate storage unit (150) that stores the condensate liquefied in the condenser unit (130).

[0036] In addition, a washing means is further included to spray washing water onto the dry stirring unit (120), and the washing means includes a washing water pump (163) and a washing water spray unit (165).

[0037] At this time, the cleaning means for cleaning the dry stirring unit (120) may include a washing water tank (160), and without the washing water tank (160), the washing water stored in the condensate storage unit (150) may be pumped through a pump (163) and sprayed to a washing water spray unit (165) connected to one side of the dry stirring unit (120), so as to be sprayed into the dry stirring unit.

[0038] By this, the space within the dry stirring section can be cleaned.

[0039] Additionally, the washing water tank (160) and the condensate storage unit (150) may be interconnected and have a movable means.

[0040] That is, one side of the condensate storage unit (150) includes a pipe (not shown) that is mutually connected to a washing water tank (160), and the pipe can be controlled by having a check valve so that the condensate storage unit (150) and the washing water tank (160) are mutually connected or closed.

[0041] In addition, the storage tank (140), condensate storage unit (140), and washing water tank (160) according to the present invention can be formed to be detachably attached to the main body of the food waste disposer (100).

[0042] Additionally, the pump (163) for spraying the washing water can operate in interaction with the stirring blade (125) of the dry stirring unit (120) or spray the washing water alone.

[0043] The driving method of the dry stirring unit (120) can be performed as follows.

[0044] ① Stirring, ② Heating, ③ Crushing and heating, ④ Cooling can be carried out in this order, and of course, this order is not fixed and can be changed.

[0045] In addition, the refrigerated storage unit (110) stores food waste before the food waste disposer begins processing the food waste, and only the cooling unit (111) can be operated during storage.

[0046] This allows the temperature of the space within the refrigerated storage compartment (110) to be maintained, enabling storage without being affected by the external temperature, and has the effect of maintaining a temperature that minimizes odor.

[0047] In addition, as shown in FIGS. 2 and 3, the refrigerated storage unit (110) may be formed in a U shape, and the refrigerated storage unit (110) may be formed with an opening / closing motor (not shown) and a gear (112) that changes the driving force of the opening / closing motor into a rotational motion so that the refrigerated storage unit (110) can rotate in a forward or reverse direction around a horizontal axis.

[0048] Accordingly, the refrigerated storage unit (110) does not operate the opening / closing motor when storing food waste, and when moving the food waste to the drying / stirring unit (120), the opening / closing motor is operated to reverse the space of the refrigerated storage unit, thereby allowing the food waste in the refrigerated storage unit (110) to be transferred to the drying / stirring unit (120).

[0049] At this time, the fan shape of the dry stirring unit (120) includes a stirring blade (125), and the stirring blade (125) includes a driving motor (not shown) so that it can rotate in the forward or reverse direction, and food waste can be dried and ground while rotating 360 degrees through the stirring blade.

[0050] In addition, the dry mixing unit (120) can also be formed in a U shape like the refrigerated storage unit (110), and food waste dried and ground by the dry mixing unit (120) can be transferred to the storage container (140) by reversing the dry mixing unit (120) by the opening / closing motor.

[0051] FIG. 3 is a structure in which the lid (117) is omitted from the structure of FIG. 2, and the input section (101) for inputting food waste is opened and closed by the rotation of the refrigerated storage section (110) without a separate lid, and the refrigerated storage section (110) is provided with a first rotating plate (110a) and a second rotating plate (110b), and when storing in a refrigerator, the first rotating plate (110a) rotates to close the input space, and the second rotating plate (110b) can store food waste in a fixed position.

[0052] In addition, when the food waste disposer (100) is in operation, the second rotating plate (110b) rotates to move food waste in the refrigerated storage section (110) to the dry stirring section (120), and the first rotating plate (110a) maintains the operation of closing the input space by maintaining the fixed position.

[0053] When all food waste is moved to the dry stirring unit (120), the second rotating plate (110b) rotates again to close the open space of the dry stirring unit (120).

[0054] In this embodiment, there is no limitation on the positions of the first rotating plate (110a) and the second rotating plate (110b), and they can organically rotate according to the operation of the food waste disposer.

[0055] In addition, the opening / closing part (115) can be applied in various shapes, and as shown in FIG. 4, it includes an opening / closing motor (not shown) that rotates vertically based on the horizontal central axis of the bottom of the refrigerated storage part (110), and the opening / closing plate is rotated by the opening / closing motor so that food waste can be transferred to the drying stirring part (120) at the reverse position.

[0056] In addition, the opening / closing part (115) of the food waste disposer according to the present invention may include, as shown in FIG. 5, an opening / closing plate having a gear mountain (115b) formed on one side of the bottom of the refrigerated storage section (110), a driving gear (115a) engaged with the gear mountain of the opening / closing plate, and an opening / closing motor (not shown) coupled to a motor shaft to rotate the driving gear (115a) forward or backward.

[0057] At this time, when the opening / closing plate is rotated by the opening / closing motor, the discharge hole (113) formed on the bottom of the refrigerated storage section is opened / closed to control the transfer of food waste to the drying mixing section (120).

[0058] In addition, the opening / closing unit (115) includes an opening / closing motor so that a check valve (CV) means for opening / closing a discharge hole on one side of the bottom of the refrigerated storage unit can be moved between a closed position and an open position, as shown in FIG. 6, and the opening / closing motor can cause the check valve (CV) to open the discharge hole so that food waste can be transferred to the drying / stirring unit (120).

[0059] In addition, the transport opening / closing unit (175) includes an opening / closing plate having a gear mountain formed on one side of the bottom of the dry mixing unit (120), a driving gear that engages with the gear mountain of the opening / closing plate, and an opening / closing motor having a motor shaft coupled to rotate the driving gear forward or backward; when the opening / closing plate is rotated by the opening / closing motor, a discharge hole formed on the bottom of the dry mixing unit can be opened / closed to control the transfer of food waste to the storage container.

[0060] In addition, the transport opening / closing unit (175) includes an opening / closing motor to rotate longitudinally based on the horizontal central axis of the bottom of the drying stirring unit (120), and the opening / closing plate is rotated by the opening / closing motor so that food waste can be transferred to the storage container at the reverse position.

[0061] In addition, the transport opening / closing unit (175) includes an opening / closing motor so that a check valve means for opening / closing a discharge hole on one side of the bottom of the drying stirring unit (120) can move between a closed position and an open position, and the opening / closing motor can cause the check valve to open the discharge hole so that food waste can be transferred to a storage container.

[0062] That is, the embodiment of moving food waste in the dry mixing unit (120) to the storage container (140) can be applied by any of the opening and closing means described above.

[0063] In addition, the dry stirring part (120) of the food waste disposer according to the present invention may further include at least one rib (not shown) on the inside of the dry stirring part (120) to interact with the stirring blade (125) so that cutting and stirring of food waste can be performed efficiently.

[0064] In addition, the refrigerated storage unit (110) is provided with an exhaust vent (135) on one side of the upper portion and an intake vent (136) on the other side of the upper portion, so that the wind generated from the exhaust vent (135) is sucked into the intake vent (136) to form an air curtain (A), thereby preventing odors inside the food waste disposer from escaping to the outside.

[0065] In addition, the food waste disposer according to the present invention may be equipped with a sensor (not shown) that recognizes whether the lid (117) is opened or closed, so that the air curtain (A) can be operated only when the lid (117) is opened.

[0066] In addition, the condenser (130) liquefies the vapor containing the foul odor and moves to the condensate storage (150), and the purified air is circulated through the exhaust vent (135) and the intake vent (136), so that a clean air curtain can be formed without a separate filter.

[0067] In addition, the cooling section (131) of the condensing section (130) can be omitted, and the vapor can be liquefied due to the internal temperature difference of the condensing section (130), which is relatively lower than the drying stirring section (120).

[0068] In addition, when looking at the air flow structure of the food waste disposer (100) according to the present invention with reference to FIG. 7, as the temperature of the air increases by the heating unit (121) provided in the drying stirring unit (120), the food waste received in the drying stirring unit (120) is dried, and as the air after drying is transferred to the condensing unit (130) by the blower fan (137), as shown in FIG. 7(a), the temperature of the air decreases.

[0069] Next, the air from which moisture has been removed in the condensation unit (130) can be returned to the drying stirring unit (120).

[0070] In addition, as shown in Fig. 7(b), the heat exchange efficiency in the condensing unit (130) can be increased by circulating the cold air generated in the cold storage unit (110) with the condensing unit (130).

[0071] By this, the temperature difference between the internal air temperature and the condenser (130) can be increased.

[0072] Therefore, according to the present invention, a condenser is provided so that vapor containing an odor is liquefied in the condenser and stored in a water tank, and the remaining air in the condenser is purified through an exhaust vent and an intake vent, thereby having the effect of removing an odor without requiring a separate filter.

[0073] In addition, according to the present invention, food can be stored without being affected by the external temperature through refrigeration through a cooling unit when stored, and has the effect of maintaining a temperature that minimizes bad odor.

[0074] The foregoing description of the present invention is for illustrative purposes only, and those skilled in the art will readily appreciate that the present invention can be readily modified into other specific forms without altering the technical spirit or essential characteristics of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single entity may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined manner.

[0075] The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

[0076] 100: Food waste disposer

[0077] 101: Input

[0078] 110: Refrigerated storage section

[0079] 111: Cooling section

[0080] 112: Gear

[0081] 113: Gate

[0082] 115: Opening and closing part

[0083] 117: Lid

[0084] 120: Dry stirring section

[0085] 121: Heating unit

[0086] 125: Stirrer blade

[0087] 127: Stirring motor

[0088] 130: Condenser

[0089] 131: Cooling section

[0090] 133: Ventilation furnace

[0091] 135: Exhaust vent

[0092] 136: Intake Songpugu

[0093] 137: Blower fan

[0094] 139: Drain

[0095] 140: Storage bin

[0096] 150: Condensate storage compartment

[0097] 160: Washing water tank

[0098] 161: Washing water pipe

[0099] 163: Wash water pump

[0100] 165: Washing water fountain

[0101] 170: Transport motor

[0102] 171: Feed screw

[0103] 175: Transfer opening

Claims

1. Inlet where food waste is put in; A lid for opening or closing the above-mentioned input port; A refrigerated storage unit having at least one cooling unit so that the food waste that has been put in can be stored at a low temperature; A drying and stirring unit that dries food waste transferred from the above refrigerated storage unit through a heating unit and cuts and crushes it through a stirring blade; and A food waste disposer comprising an opening / closing unit having at least one opening / closing means for transferring food waste stored in the refrigerated storage unit to a drying / stirring unit.

2. In claim 1, The above food waste disposer, A food waste disposer further comprising a transport opening / closing unit having at least one opening / closing means for transporting food waste within the drying / mixing unit, and a receiving container for storing food waste dried, cut, and shredded in the drying / mixing unit.

3. In claim 2, The above food waste disposer, A food waste treatment device further comprising a blower fan for transporting steam generated during the heating process of the drying stirring unit, a condenser unit for liquefying the steam transported by the blower fan, and a condensate storage unit for storing the condensate liquefied in the condenser unit.

4. In claim 3, It further includes a washing means capable of spraying washing water onto the above-mentioned dry stirring section; The above washing means includes a washing water pump and a washing water spray unit; A food waste treatment device that pumps wash water stored in the wash water tank or condensate storage unit through a pump and sprays it into a wash water spray unit connected to one side of a dry stirring unit, thereby spraying it into the dry stirring unit and washing the space within the dry stirring unit.

5. In claim 4, The pump for spraying the washing water operates in interaction with the stirring blade of the dry stirring unit or sprays the washing water alone, a food waste treatment device 6. In claim 1, A food waste disposer in which only the cooling section can be operated during storage, where food waste stored in the above-mentioned refrigerated storage section is stored before the food waste disposer begins processing the food waste.

7. In claim 1, The above opening / closing unit includes an opening / closing plate having a gear mountain formed on one side of the bottom of the refrigerator storage unit, a driving gear engaging with the gear mountain of the opening / closing plate, and an opening / closing motor having a motor shaft coupled to rotate the driving gear forward or reversely; A food waste disposer that controls the transfer of food waste to the drying and stirring unit by opening and closing a discharge hole formed in the bottom of the refrigerated storage unit when the opening and closing plate is rotated by the above opening and closing motor.

8. In claim 1, A food waste disposer in which the above opening and closing unit includes an opening and closing motor that rotates longitudinally based on a horizontal central axis of the bottom of the refrigerator storage unit, and the opening and closing plate is rotated by the opening and closing motor to transfer food waste to the drying and stirring unit at the reverse position.

9. In claim 1, The above opening and closing unit includes an opening and closing motor so that a check valve means for opening and closing a discharge hole on one side of the bottom of the refrigerated storage unit can move between a closed position and an open position, and a food waste disposer in which the check valve opens the discharge hole by the opening and closing motor so that food waste is transferred to a drying and stirring unit.

10. In claim 2, The above-mentioned transport opening / closing unit includes an opening / closing plate having gear teeth formed on one side of the bottom of the dry mixing unit, a driving gear engaged with the gear teeth of the opening / closing plate, and an opening / closing motor coupled with a motor shaft to rotate the driving gear forward or reversely; A food waste disposer that controls the transfer of food waste to a storage bin by opening and closing a discharge hole formed at the bottom of a drying mixing section when the opening / closing plate is rotated by the above opening / closing motor.

11. In claim 2, A food waste disposer in which the above-mentioned transport opening / closing unit includes an opening / closing motor to rotate longitudinally based on the horizontal central axis of the bottom of the drying mixing unit, and the opening / closing plate is rotated by the opening / closing motor so that food waste is transferred to the receiving bin at the reverse position.

12. In claim 2, The above-mentioned transport opening / closing unit includes an opening / closing motor so that a check valve means for opening / closing a discharge hole on one side of the bottom of the drying stirring unit can move between a closed position and an open position, and a food waste disposer in which the check valve opens the discharge hole by the opening / closing motor so that food waste is transferred to a receiving bin.

13. In claim 1, A food waste disposer, wherein the dry stirring unit further includes at least one rib on the inside of the dry stirring unit to interact with the stirring blade so that cutting and stirring of food waste are performed efficiently.

14. In claim 1, The above refrigerated storage section, An exhaust vent is provided on one side of the top, and an intake vent is provided on the other side of the top. A food waste disposer that forms an air curtain by sucking the wind generated from the exhaust vent into the air intake vent, thereby preventing the foul odor inside the food waste disposer from escaping to the outside.

15. In claim 14, The above food waste disposer is equipped with a sensor that recognizes whether the lid is open or closed, so that the air curtain operates only when the lid is open.

16. In claim 14, A food waste disposer in which vapor containing odor is liquefied and moved to a condensate storage unit, and purified air is circulated through exhaust and intake vents, thereby forming a clean air curtain without a separate filter.

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