JPH08320140A - Exhaust unit with hood having no ventilating hole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exhaust unit filtering air from an exhaust hood, which can be easily transported and assembled to operate as a single unit by using module components including an exhaust hood, a filter means and a blower means. SOLUTION: An exhaust unit assembly includes an exhaust unit that is a pod, a hood and an air wall means that is an air wall enclosure. The exhaust unit of the pod includes an air inlet 10, a filter means 12, a blower 14, a blower motor 16, and an air outlet to the outside. The exhaust unit is defined by a housing having a bottom wall 20 with a space, a top wall 22, a vertical front wall 24 and a rear wall 26 with spaces, and a vertical left sidewall and a right sidewall. The housing can be rectangular or can include a protrusion that is designed corresponding to the outer shape of the hood.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to an exhaust unit for filtering exhaust from an exhaust hood, and more particularly to a housing selectively connected to the exhaust hood in multiple arrangements. In one embodiment, the exhaust unit assembly comprises a housing, an air wall enclosure, and an exhaust hood, which housing may be directly connected to the exhaust hood and the air wall enclosure, It may be connected to them from a distance by an air duct system.

[0002]

BACKGROUND OF THE INVENTION There are various exhaust units designed and manufactured to filter exhaust from cookware and to discharge filtered exhaust out of the unit. These exhaust units can be stationary or portable and are manufactured to exhaust exhaust fumes emitted from cookware that utilizes natural gas or electricity to obtain the desired heat.

Such exhaust units utilize an air duct to direct the exhaust smoke out of the building, or pass the exhaust smoke through a filtration system and return the filtered exhaust smoke back into the building for recirculation. There is.

For example, US Pat. No. 5,154,161 teaches an air filter which is provided in a cookware to avoid the need to provide an exhaust vent in a building and which also houses a mobile cookware. It allows the use of self-supporting and independently movable structures that are capable.

In addition, US Pat. No. 5,133,786 teaches a method and apparatus for cooking, which method includes moving an air seat across a cooking appliance. Another facility is shown in US Pat. No. 5,002,040 for a portable, self-contained exhaust unit for filtering exhaust gas for cookware.

Further, US Pat. No. 3,889,581 describes a duct system for treating grease-laden vapors from a cooking stove.

US Pat. No. 3,954,427 also discloses a self-supporting unit for collecting or ventilating smoke and odors during cooking, which is intended to be placed near the cooking surface.

However, as cooking utensils and equipment, especially those used in the fast food industry, are being introduced into hospitals, stadiums, office buildings and shopping plazas, ventilation of exhaust smoke from such utensils has a future potential. It has become an important issue when investigating the feasibility of a site location. For example, tall buildings sometimes require costly plumbing and fire-resistant vertical passages, while existing buildings may not have exhaust capacity on the rooftop. Also, installing conventional ventilation equipment in high rise buildings is time consuming and costly. In fact, public institutions such as hospitals may not normally have adequate ventilation or aisles on the roof, and structural designs suitable for the installation of exhaust systems. Moreover, historic sites often do not allow installation of outside exhaust equipment. Moreover, elsewhere, a single source of exhaust is required for multiple restaurant applications, which can lead to many balance problems.

In addition, national, regional and local building standards are becoming more stringent, while environmental standards are
Increasingly sophisticated and demanding clean exhaust air.

Furthermore, kiosks, shopping plazas, etc.
There is an increasing demand for customers to provide a place for cooking facilities. Therefore, exhaust smoke ventilation is also an important consideration in such installations.

In some locations, cooking and ventilation equipment must be located in buildings that may have only 3 feet of access doors, so installing such equipment in available space. Is causing difficulties.

Accordingly, it is an object of the present invention to provide an improved and adaptable exhaust unit. More particularly, it is an object of the present invention to provide an exhaust unit having a modular design that is easily transportable and that can serve as a single unit in different configurations for different applications. Is.

One aspect of the present invention relates to an exhaust unit for filtering air from an exhaust hood above a cooking facility, which operates as a single unit regardless of shape, exhaust hood, filtering means and blower. It consists of modular components including means.

Another aspect of the present invention is a housing having a passage, and an air inlet and an air outlet communicating with the passage,
Removable filtering means arranged in such a passage for filtering said air, associated with said passage for drawing said air through said inlet and said passage and expelling said air from said outlet for said air An exhaust unit for filtering the air from the exhaust hood above the cooking installation, which is selectively connected to the exhaust hood in multiple arrangements.

Another aspect of the present invention relates to an exhaust unit assembly for filtering air from an electric cooking facility, which comprises: A housing having top and bottom walls with spaces, vertically standing front and rear walls with spaces, and vertically standing left and right walls with spaces defining the housing; A passageway through the housing, an air inlet and an air outlet provided by the housing for communicating with the passageway,
Removable filtering means disposed within the passage for filtering the exhaust, cooperating with the passage for drawing the exhaust through the inlet and the passage and out of the air outlet. A blower means, a vertically standing air wall enclosure communicating with the housing, and an exhaust hood above the cooking equipment, the exhaust hood being connected to the air wall enclosure. Through the inlet of the housing, through the passage for exhaust, through the outlet, and in communication with the air inlet of the housing for drawing exhaust air from the hood,
The exhaust hood and the air wall enclosure are
Multiple connections are selectively connected to the housing.

DESCRIPTION OF THE INVENTION Throughout the figures, the same parts are provided with the same numbers.

1 to 7 illustrate the present invention, an exhaust unit assembly 2 includes an exhaust unit or pod 4, a hood 6 and an air wall means or air wall enclosure 8. The exhaust unit or pod 4 includes an air inlet 10, a filtering means 12, a blower 14 and a blower motor 16. Further, the exhaust unit also includes an air outlet 18 to the outside.

The exhaust unit 4, as best shown in FIGS. 5-7, has a bottom wall 20 with a space and a top wall 22, a vertically standing front wall 24 with a space and a rear wall 26. And a vertically extending housing having a left side wall 28 and a right side wall 30.

The housing may have various shapes such as a rectangle, or may include a protrusion or the like designed according to the outer shape of the hood.

The air inlet 10 shown in FIGS. 1 and 5 has a wall 2
8 but the air inlet is
It may be located on the rear wall 26 as shown in FIG. 15, or on the right wall 30 as shown in FIG. 10, or along the upper wall as shown in FIG. 18, depending on the arrangement chosen by the user.

More specifically, the exhaust unit assembly 2 shown in FIGS. 1-4 includes a housing or exhaust unit 4,
It consists of an assembly of an air wall enclosure 8 and a hood 6. The exhaust unit assembly 2 shown in FIGS. 1-4 can be transported in three basic units: a housing or exhaust unit 2, an air wall enclosure 8 and a hood 6. Furthermore, the exhaust unit 4
Is adapted to connect to existing standard exhaust hoods on the market.

The exhaust unit 4 is selected to be connected to the hood 6 in a number of arrangements. In the arrangement shown in FIGS. 1 to 7, the housing 4 is directly connected to the hood and is connected at the left side wall 28.

However, the exhaust unit 4 is flexible and the exhaust hood 6 can also be selectively connected to the right wall 30 of the housing 2. In this case,
The air inlet 10 will be placed on top of the right wall 30.

Furthermore, the hood 6 may also be connected to the rear wall 26 of the housing 4, as shown in FIG.

The unit 4 includes a passage 32 leading to an air inlet 10 and an air outlet 18. Blower
Exhaust smoke directed by the hood 6 is an air intake 10
Motor 1 as you pull in and through passage 32
When the 6 is activated, the passage 32 allows air to pass through the air inlet 1
It allows to draw from 0 through the filtering means 12.

A blower or fan 14 directs the filtered exhaust to an air outlet 18, as indicated by arrow A. The exhaust unit 4 can be adapted so that all of the filtered air is exhausted directly from the air outlet 18 into the atmosphere of the room, or the filtered exhaust can be: It may be connected to a piping device so that all of the air is discharged to the outside of the building.

Alternatively, a portion of the filtered exhaust is indicated by arrow A.
Part of the exhaust that has been exhausted to the atmosphere and filtered, as shown in FIG. 2, may be recirculated through the air wall enclosure 8, as shown by arrow B in FIG. In particular,
The exhaust unit includes a wall 1 having a number of air holes 15 for communicating with the air wall enclosure.
The inner wall 11 leading to 3 has an opening 9.

Airwall means or enclosure 8
Is shown in FIGS. 1-4 and 8 and has a bottom wall 34,
It is defined by a top wall 36, a front wall 38 and a rear wall 40, an upright left side wall 42 and an upright right side wall 44. In the arrangement shown in FIGS. 1 to 4, the upright right side wall 44 of the air wall 6 is in contact with the housing 4. In particular, the upright right wall 44 of the air wall 6 is in contact with the wall 13. The front wall 38 consists of a panel 39 bolted together at 41. The front wall 38 is also bolted to the exhaust unit 4 at 43. The stud frame 45 is attached to strengthen the air wall and the exhaust unit assembly. The stud frame 45 is attached to the walls 34, 36, 38, 40 and 42,
It can be connected by any means such as welding and fastening. For example,
It is also possible to plug the pillars 49 at the top while using a foam gasket at 51 and to do stud welding at 47.

Walls 34, 36, 38, 40, 42 and 44
Defines an air wall enclosure 6 that provides a chamber 39 that receives a portion of the filtered and recirculated exhaust B.

The air wall enclosure 6 also includes an enclosure air outlet 48, which is one of the filtered and recirculated exhaust smoke directed through the air wall 6. The part faces downward as shown by arrow C. A portion of such air C is then sucked back up into the hood 6, as shown by arrows D and E, and recirculated through the housing as described above. Furthermore, the remaining air passing through the air wall 6 is directed upwardly through the air wall enclosure 6 and back up into the housing 4 for further recirculation.

Cooking equipment, which may consist of electric cookware (not shown), is located below the hood 6 with respect to the air wall enclosure 8. Therefore, as the filtered and recirculated air flows through the air wall 8, it tends to cool the walls 38 and 40 of the air wall enclosure. In addition, exit 4
The air flow C emitted from 8 is also D, E
Since it is directed upwards to return to the exhaust unit 2 as shown in Figure 3, it tends to carry away heat from the cooking utensil (not shown).

As shown best in FIGS. 1 and 4, the hood 6
Are connected to the air wall enclosure 8 as well as the sides of the housing 4, so that the air wall enclosure 8 helps support the hood 6.
The hood is of conventional construction and is exemplified by the stainless steel grill filter 46 and the safety spray device described herein which operates in the event of excessive heat or fire.

The hood 6 tends to trap or direct the exhaust fumes through the openings 51 into the hood, which exhaust fumes then pass through the air inlet 10.
It descends in a single pass through 2 into the passage 32 due to the negative pressure created by the blower 14.

The exhaust unit 4 has an open outlet 49 which is an electric outlet for supplying heat to the cooking equipment. In addition, the housing 4 has hinged stainless steel cabinet doors or panels 50 and 52. The panel 50 allows access to the blower 14 and the motor 16, while the panel 52
Allows access to the filter 12. As the filter 12, various conventional filters are exemplified, and as such a filter, for example, there is a three-stage filter device in which each continuous filter removes desired fine particles from the exhaust gas. In particular, the filtering means is a pre-filter 6
1, the intermediate filter 62 and the high efficiency filter 63 may be included. Any charcoal filter 65 may be used. The filter can be replaced if necessary.

The housing 4 also includes a fire shield which operates by detecting excessive heat in a manner well known to those skilled in the art.
The damper 67 may be included.

Further, the housing 4 may have an ecology spray section 54. Ecology
The spray section 54 has odor control means whereby a suitable perfume is provided in the passageway 32 to control the odor of the air filtered through the unit 2.
Be thrown away. The Ecology Spray Section 54
It has a cabinet door or panel 56 and allows access to the unit 54. The unit also includes a fire cabinet or panel 58 and associated fire protection equipment.

The housing 4 may be designed to have a variety of capabilities and specifications, and in one particular embodiment,
The air capacity is designed to handle 1000 cubic feet per minute, and motor 16 consists of a motor with a power of 1.5 horsepower rated at 1750 rpm.

The housing 4 also has a suitable electrical space 60 and the power supply may be designed with different capacities, in one example 208/3/60 maximum connection load 17
5 amps (208/3/60 maximum connected load of 175
amps). The filter type of filter 12 typically includes a high efficiency particulate filter.

The exhaust unit 2 shown in FIGS. 1 and 4 is
It may be designed to handle two devices and is rated at 208/3/30 maximum 49 amps 16 kil
owatt power capacity). Therefore, the exhaust unit shown in FIGS. 1-4 is shipped in three-piece package assembly, ie,
A pod or housing 4, an air wall enclosure 8 and a hood 6. The hood 6 may be an existing standard hood in some examples, so only two packages or housings 4 and air walls 8 need be shipped. The component is
Various sizes, ie sizes of 5, 6 and 8 feet (ie such sizes are for the width of hoods or air curtains, -5 feet are typically 5 feet wide between walls 42 and 44). Is shipped). However, it can be used in any size. Such components are designed to be assembled parts and to be transported through 3 foot door openings and elevators.

In the arrangement shown in FIGS. 1-4, the pod or exhaust unit 4 is selected to be connected, which connects the hood 6 to the left side of the housing 4.

In the arrangement shown in FIGS. 10-13, the housing 4 is selected so that it can be connected to the left side of the exhaust hood.

14-17 further illustrate another embodiment of the present invention whereby the housing is selected by the rear wall of the housing 4 so that it can be connected to the exhaust hood. . In fact, the housing could be chosen to be connected to the exhaust hood by the top wall of the housing 4.

18-20 illustrate yet another embodiment of the invention whereby a pod or exhaust unit 4 includes a hood 6 and an air wall enclosure 8.
And are separated by an air duct 60. An optional lower return air duct 62 may be provided. Furthermore,
In the arrangement shown in FIGS. 18-20, the air wall is optional as is the air discharge 48. The duct 60 may be connected to the port 13 or any port 15.

Thus, the invention disclosed herein is a plurality of arrangements that are easy to transport, adaptable in construction, and that allow the housing to be selectively connected to the exhaust hood in a plurality of arrangements. Describes an adaptable exhaust unit system that can be adapted to various positions.
In the embodiment shown, the housing 4 may be connected to the exhaust hood in five arrangements, namely, left side, right side, rear, top and away therefrom.

The exhaust unit may be designed to have a variety of capabilities and specifications, the following example illustrates some of these. That is,

Specification Example Air Flow Capacity 1) Left, Right, or Rear Mounting Size / Ft Cubic Feet / Min 5 1100 6 1500 8 2000 2) Remote Mounting Arrangement Size / Ft Cubic Fe / Min 5 1250-1800 6 1500-1950 8 2000-2250

[0047]

[Table 1]

Thus, from the above example: In one example, a 5 foot unit can accommodate (a) up to two cooking appliances; (b) the combined width of the cooking appliances is less than 48 inches; in another example, 6 A foot unit can (a) accommodate up to three cooking facilities. (B) A cooking facility has a combined width of less than 60 inches; in another example, an eight foot unit can (a) up to four cooking facilities. (B) The cooking equipment has a combined width of less than 84 inches.

The types of cooking equipment available include hot tops, grills, broilers, ovens, stoves, steamers, kettles, and other specialty cooking equipment.

In addition, the invention described herein utilizes a fire protection design that incorporates controls to submerge the whole rather than to partially submerge it, regardless of the type and number of appliances utilized above. In other words, the exhaust unit 4,
In particular, the exhaust unit assembly 2 includes fire protection equipment for bathing water on the surface of the appliance.

FIG. 21 illustrates the nozzle 72 of the fire protection system 70 associated with the hood 6. In particular, fire protection equipment 70 includes a supply of fire retarding liquid or chemicals in a container 74 located behind panel 56 of exhaust unit 4. The container is connected to the nozzle by a conduit 76.

The fire protection equipment 70 has a nozzle 78 near the bottom of the filtering means 12 and a nozzle 80 installed near the top of the filtering means 12. The numeral 112 represents a quick seal at the penetration point.

Moreover, the nozzle 84 is located just outside the unit 4 in the hood 6 and is considered a plenum protection nozzle.

A large number of rotary nozzles 86 are used in the hood 6 to protect equipment (not shown) in case of fire. Field joint 88 is also utilized. If the nozzle causes water to flood the entire top surface of the device in order to eliminate such a cause in the case of a fire, depending on the size of the hood and the number of devices described above, How many equipment protection nozzles 86
But you can use it. The rotary nozzle 86 will be aimed at the center of the equipment. As shown in FIG. 21, a duct protection nozzle 88 is used when a remote mounting device is used.

FIG. 22 illustrates a mechanism for operating the fire protection system. A fire protection pull station 59 is equipped so that the system can be activated by pulling on the pull station 59. A control cable 90 in the conduit is utilized. Lower pulley 92 and control cable bracket 94 are also shown.

A large number of fusible links 96 are used depending on the size of the hood and the number of appliances used. The fusible link 96 in one embodiment is activated when the temperature reaches 165 ° C. Additional links 98 and control cable brackets 100 are located in passage 32 and provide plenum protection.

Thus, if the pull station 59 is manually actuated, or if any of the fusible links is 165
If heat above 0 ° C. is detected, then the control cable 90 is released and fire retardant or liquid is released to all of the top surface of the appliance to suppress or mask the fire.

The means for submerging the cooking facility in water may be of a fixed design, regardless of the type or location of the particular cooking facility.

FIG. 23 is a typical wiring diagram for a 5 foot size hood.

24, 25 and 26 further show the fire protection equipment 7.
0 is illustrated.

The exhaust unit 2 also provides complete recirculation of the exhaust to the environment by means of the air outlets 18 and 48. Furthermore, the exhaust unit 2 also causes a partial air recirculation, and a part of the air B is introduced into the air wall enclosure 8 and returned to the unit 4.

Moreover, the unit 2 also has full external exhaust capability by connecting the air ejector 22 to a suitable air duct system.

Since the fan or blower is belt driven, such a design provides more system flexibility. The fan wheel is an airfoil non-overloading type.

The exhaust unit described herein can be divided into partial packages, assembled together or assembled with other existing equipment, ie, standard overhead exhaust hoods. However,
The core of the exhaust unit comprises a filtration pod or housing 4 containing a safety interlock. The housing 4 is compatible with other hoods and fire protection equipment.

In the embodiment of the present invention described above, piping work and a large blower are not necessary. The exhaust unit 4 is self-contained as it includes fire protection equipment, filters, fans, all electrical controls and power supplies. The unit 4 also supplies air to the surroundings afterwards, at the top or through ducts. Although vertically deployed units 4 are shown, such units 4 may be mounted horizontally or on the ceiling.

Unit 4 also includes such a hood if the exhaust hood does not meet the specifications of the ordinance, such hood may be provided by the use of Unit 4 as described herein to meet the specifications of the ordinance (eg, in some areas, grease). May not be released directly into the atmosphere containing air). This is because the filter means 12 filters such grease.

While the preferred embodiments have been explicitly described in connection with the drawings, along with their operation and use, variations on the preferred embodiments are not departing from the spirit of the invention claimed herein by one of ordinary skill in the art.
It goes without saying that it can be done.

[Brief description of drawings]

FIG. 1 is a front elevational view of an exhaust unit assembly.

FIG. 2 is a top plan view of the exhaust unit assembly of FIG.

FIG. 3 is a right side elevational view of FIG. 1.

FIG. 4 is a left side elevational view of FIG.

FIG. 5 is a left side view of the exhaust unit with the left side panel removed.

FIG. 6 is a front view of the exhaust unit with the front panel removed.

FIG. 7 is a top view of the exhaust unit with the top panel removed.

FIG. 8 is a partial view of an air wall.

FIG. 9 is a perspective view of a hood.

FIG. 10 is a front elevational view of the second embodiment of the present invention.

FIG. 11 is a top plan view of FIG.

FIG. 12 is a right side elevational view of FIG.

FIG. 13 is a left side elevational view of FIG.

FIG. 14 is a front elevational view of the third embodiment of the present invention.

FIG. 15 is a top plan view of FIG.

FIG. 16 is a rear view of FIG.

FIG. 17 is a right side elevational view of FIG.

FIG. 18 is a front elevational view of another embodiment of the present invention in which the exhaust unit is remotely connected to the air wall enclosure and the exhaust hood.

FIG. 19 is a top plan view of FIG. 18.

FIG. 20 is a left side elevational view of FIG. 18.

FIG. 21 is a schematic view of fire protection equipment.

FIG. 22 illustrates a mechanism for operating a fire protection system.

FIG. 23 is a wiring diagram.

FIG. 24 is a front view of the fire protection equipment.

FIG. 25 is a top view of fire protection equipment.

FIG. 26 is a side view of the fire protection equipment.

Claims (21)

[Claims] 1. Exhaust air for filtering air from an exhaust hood above a cooking facility, which comprises modular components including an exhaust hood, a filtering means and a blower means, operating as a single unit regardless of the arrangement. unit. 2. A housing having: (a) a passageway having an air inlet and an air outlet opening to the passageway; and (b) a removable member disposed in the passageway for filtering the air. Filtering means, (c) for drawing the air through the inlet and the passage and for discharging the air from the outlet of the air,
An exhaust unit for filtering air from an exhaust hood above a cooking facility, comprising a blower means associated with the passage, the housing being selectively connected to the exhaust hood in a number of arrangements. 3. The exhaust unit according to claim 2, wherein the housing is directly connected to the exhaust hood. 4. The exhaust unit according to claim 2, wherein the housing is connected to the hood away from the hood by an air duct. 5. The housing includes top and bottom walls with spaces defining the housing, front and rear walls with spaces standing vertically and left and right sidewalls with spaces. The exhaust unit according to claim 2, wherein 6. The exhaust hood is the left wall of the housing,
The exhaust unit according to claim 5, which is selectively connected to the right wall, the rear wall, or the top. 7. The exhaust unit of claim 6 further comprising vertically standing air wall means connected to the exhaust hood and selectively connected to the housing in one of the four arrangements. 8. The exhaust unit of claim 6 further comprising vertically standing air wall means connected to the exhaust hood and remotely connected to the housing by an air duct. 9. The exhaust unit according to claim 7, further comprising odor control means associated with the passage for controlling the odor of air filtered through the filtration means. 10. The exhaust unit of claim 8, further comprising odor control means associated with the passage for controlling the odor of air filtered through the filtration means. 11. The air is released into the atmosphere.
Exhaust unit as described. 12. The exhaust unit according to claim 10, wherein the air is discharged into a duct system. 13. The exhaust unit according to claim 10, wherein a part of the filtered air is discharged into the atmosphere and a part of the filtered air is recirculated through the air wall means. 14. An exhaust unit assembly operating as a single unit for filtering exhaust gas from a cooking facility, the assembly comprising: (A) A housing having a top and bottom wall with space, vertical front and rear walls with space and left and right vertical walls with space defining the housing. (B) a passageway through the housing, (c) an air inlet and an air outlet provided by the housing for communicating with the passageway, (d) located within the passageway for filtering the exhaust gas, Removable filtration means, (e) blower means associated with the passage for drawing the exhaust through the inlet and the passage, and out of the air outlet; (f) Vertically standing air communicating with the housing
A wall enclosure, (g) an exhaust hood above the cooking facility,
The exhaust hood is (i) connected to the air wall enclosure, and (ii) draws exhaust from the hood through the inlet of the housing, through the passage for exhaust and through the outlet. For communicating with the air inlet of the housing, the exhaust hood and the air wall
The enclosure is selectively connected to the housing in a number of configurations. 15. The housing is directly connected to the hood and air wall enclosure.
The exhaust unit assembly according to item 3. 16. The exhaust unit assembly of claim 13, wherein the housing is remotely connected by a duct to the hood and the air wall enclosure. 17. The air wall enclosure and the exhaust hood are selectively connected to the left wall, right wall, rear wall or top of the housing in one of four configurations. 15. The exhaust unit assembly according to 14. 18. The exhaust unit assembly of claim 16, wherein a portion of the exhaust filtered by the filtering means is discharged to the atmosphere and a portion thereof is circulated through the air wall enclosure. 19. The air wall enclosure comprises:
18. The exhaust unit assembly of claim 17, including a lower enclosure outlet for discharging a portion of the filtered air and an upper enclosure outlet for communicating with the inlet of the housing. 20. The assembly is a module,
18. An exhaust unit assembly according to claim 17, wherein the housing unit, air wall enclosure and exhaust hood unit can be disassembled and transported and the housing can be connected to any standard exhaust hood. 21. The exhaust unit assembly of claim 19 including fire protection means to flood the cooking facility with a defined design regardless of the type or location of the cooking facility.