CN211484156U

CN211484156U - Intelligent oven equipment

Info

Publication number: CN211484156U
Application number: CN201922084072.XU
Authority: CN
Inventors: 卢啸龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-09-15
Anticipated expiration: 2029-11-28

Abstract

The utility model provides an intelligence oven equipment, the power distribution box comprises a box body, the box divide into box and lower box, the upper portion both ends of going up the box all are equipped with nine needle data connector, upward be equipped with baking frame access & exit on the box, the internal baking box that has put of lower box, be equipped with the clearance between baking box and the box, the internal inner bag that still is equipped with of oven, the internal baking frame that still is equipped with of oven, baking frame includes first baking frame and second baking frame, the installation of baking frame liftable is in the inner bag of baking box, the both sides of first baking frame all are equipped with first elevating system, the both sides of second baking frame all are equipped with second elevating system. Compared with the prior art, the system has simple structure, can automatically bake and is safe and reliable.

Description

Intelligent oven equipment

Technical Field

The utility model relates to an intelligence oven equipment.

Background

Along with scientific and technological development, the kitchen small electricity field obtains rapid development, especially electric oven, in order to reduce air pollution, open air barbecue is forbidden in many places, electric oven is because of its green, convenient operation, the baking of being convenient for, and then receives extensive application, however, present electric oven, the design is unreasonable, the operation is not intelligent, unable intelligent recognition, can't bake out best delicious food according to the edible material of difference, can't let the user use more convenient more save worry, in addition, along with the increase of live time, controlling means became invalid, the electric leakage appears, sealed not tight scheduling problem.

Therefore, how to provide a simple structure, cooperation intelligent sensor part, can automatic baking, smokeless pollution-free, intelligent recognition, accurate baking eat material, a key extremely convenient use, safe and reliable's intelligent oven equipment, is the utility model discloses the technical problem who solves.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect and problem of prior art, the utility model aims at providing a simple structure, can automatic baking, safe and reliable's intelligent oven equipment.

In order to achieve the above object, the present invention provides the following technical solutions

An intelligent oven device comprises an oven body, wherein the oven body is divided into an upper oven body and a lower oven body, nine-needle data connectors are arranged at two ends of the upper portion of the upper oven body, a baking frame inlet and a baking frame outlet are arranged on the upper oven body, a baking oven body is arranged in the lower oven body, a gap is arranged between the baking oven body and the oven body, a liner is further arranged in the oven body, a baking frame is further arranged in the oven body and comprises a first baking frame and a second baking frame, the baking frame is arranged in the liner of the baking oven body in a lifting mode, first lifting mechanisms are arranged on two sides of the first baking frame, second lifting mechanisms are arranged on two sides of the second baking frame, a first heating plate, a second heating plate and a third heating plate are arranged in the oven body, the first heating plate is arranged on the outer side of the first baking frame, the second heating plate is arranged between the first baking frame and the second baking frame, the third hot plate sets up in the outside of second baking frame, first hot plate, second hot plate and third hot plate all are connected with temperature sensor, temperature sensor still connection director, cell-phone APP is still connected to the controller, the controller is connected with camera, temperature detector, bar code collector, control switch and infrared correlation, the camera passes through the mount to be fixed on the lateral wall of the oven body, temperature detector fixed mounting is on the lateral wall that corresponds baking frame box, bar code collector fixed mounting is in the one end of upper box, infrared correlation fixed mounting is at the both ends of upper box and lower box, the lower part of oven body still is equipped with and connects the food tray, the bottom of oven body and inner bag all is equipped with the oil leak hole, will the bottom of oven body and inner bag sets to middle low both sides height to form a slope, ensure that the oil that produces during the baking can all enter into and connect the food tray, the oil receiving disc moves in and out through a moving mechanism and a moving slide rail, the moving mechanism is arranged on one side of the oil receiving disc, the moving mechanism comprises a moving motor, the moving motor is further provided with a moving gear, the moving gear is further connected with a moving rack, the moving gear and the oil receiving disc are formed by integral injection molding, and the moving slide rail is arranged on the other side of the oil receiving disc;

the first lifting mechanism comprises a first motor, rotating shafts are arranged at two ends of the first motor, a first corner gear and a second corner gear are connected to the rotating shafts, a first rotating shaft steel sleeve is mounted at the upper end of the first corner gear and fixed at the lower end of the side wall of the oven body, the first rotating shaft steel sleeve is connected with a first lead screw, a second rotating shaft steel sleeve is connected with the upper end of the first lead screw, and the second rotating shaft steel sleeve is connected and fixed at the upper end of the side wall of the oven body;

a third rotating shaft steel sleeve is arranged at the upper end of the second rotating angle gear, the third rotating shaft steel sleeve is fixed at the lower end of the other side wall of the oven body, a second lead screw is arranged on the first rotating shaft steel sleeve, the upper end of the second lead screw is connected with a fourth rotating shaft steel sleeve, and the fourth rotating shaft steel sleeve is fixed at the upper end of the other side wall of the oven body;

the second lifting mechanism comprises a second motor, rotating shafts are arranged at two ends of the second motor, a third corner gear and a fourth corner gear are connected to the rotating shafts, a fifth rotating shaft steel sleeve is mounted at the upper end of the third corner gear and fixed to the lower end of the side wall of the oven body, the fifth rotating shaft steel sleeve is connected with a third lead screw, a sixth rotating shaft steel sleeve is connected to the upper end of the third lead screw, and the sixth rotating shaft steel sleeve is connected and fixed to the upper end of the side wall of the oven body;

a seventh rotating shaft steel bushing is mounted at the upper end of the fourth rotating angle gear, the seventh rotating shaft steel bushing is fixed at the lower end of the other side wall of the oven body, a fourth lead screw is mounted on the seventh rotating shaft steel bushing, the upper end of the fourth lead screw is connected with an eighth rotating shaft steel bushing, and the eighth rotating shaft steel bushing is fixed at the upper end of the other side wall of the oven body

The first lead screw, the second lead screw, the third lead screw and the fourth lead screw are all provided with a lifting base, the lifting base is provided with a lifting frame pendant, and the first baking frame and the second baking frame are both connected with the lifting frame pendant;

the upper box body is provided with a plurality of heat dissipation fans, the heat dissipation fans are fixed on one side of the upper box body in a bolt mode, and a plurality of convection heat dissipation holes are formed in the position, corresponding to the heat dissipation fans, of the upper box body;

the baking rack is a U-shaped groove body, the height of the front wall of the U-shaped groove body is lower than that of the rear wall, and a plurality of supporting grooves are further formed in the rear wall.

Further, first hot plate, second hot plate and third hot plate pass through the draw-in groove to be fixed in the oven body, the draw-in groove passes through the bolt fastening on the lateral wall of oven body.

Furthermore, the upper box body and the lower box body are fixed together in a detachable mode, wherein pillars are arranged on three corners of the lower portion of the upper box body, three holes are formed in three positions, corresponding to the pillars, on the upper portion of the lower box body, and the pillar inserting holes play a role in fixing.

Furthermore, the inner wall of the oven body is also coated with Teflon.

Furthermore, the upper end of the upper box body is also provided with an upper cavity exhaust hole.

Furthermore, the lower part of the oil receiving disc is also provided with an electronic scale which is fixed at the bottom of the lower box body in a bolt or welding mode.

Further, the bottom of lower box still is equipped with the second heat dissipation fan, the second heat dissipation fan passes through the bolt fastening in the bottom of lower box.

Further, the baking frame is a U-shaped groove body, the height of the front wall of the U-shaped groove body is lower than that of the rear wall, and a plurality of supporting grooves are further formed in the rear wall.

Furthermore, the side wall of the lower box body is also provided with an observation port.

Further, one side of the first baking frame is provided with a first lifting mechanism, the other side of the first baking frame is provided with a first slide way, one side of the second baking frame is provided with a second lifting mechanism, and the other side of the second baking frame is provided with a second slide way.

Further, the first lifting mechanism comprises a first motor, a first gear and a first rack, the first gear is mounted on the first motor, the first rack and the first gear are meshed together, and the first slide way comprises a first slide rail inner pack and a first slide rail outer pack; the second lifting mechanism comprises a second motor, a second gear and a second rack, the second gear is installed on the second motor, the second rack and the second gear are meshed together, and the second slide way comprises a second slide rail inner package and a second slide rail outer package.

Compared with the prior art, the utility model discloses because the power distribution box comprises a box body, the box divide into box and nowel, the nowel is internal to be put with the oven body, be equipped with the clearance between oven body and the box, internal first baking frame and the second baking frame of still being equipped with of oven, the installation of barbecue liftable is internal at the oven, one side of first baking frame is equipped with first slide rail, and the opposite side is equipped with first elevating system, one side of second baking frame is equipped with the second slide rail, and the opposite side is equipped with second elevating system, internal first hot plate, second hot plate and the third hot plate of being equipped with of oven, first hot plate sets up the outside at first baking frame, the second hot plate sets up between first baking frame and the second baking frame, the third hot plate sets up the outside at the second hot plate, first hot plate, Second hot plate and third hot plate all are connected with temperature sensor, consequently drive first baking frame and second baking frame through setting up first elevating system and second elevating system and carry out the up-and-down motion, thereby conveniently carry out the baking to the cluster body, in addition, through the initial temperature of temperature detector to food and the temperature of baking process and the temperature control who toasts the completion, and, take away the heat with the cavity is inside through the heat dissipation fan, give parts heat dissipation such as inside infrared correlation, motor and integrated circuit board.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a three-dimensional structure diagram of the intelligent oven device of the present invention.

Fig. 2 is a cross-sectional view of the utility model of a smart toaster apparatus.

Fig. 3 is a top view of the smart toaster apparatus of the present invention.

Fig. 4 is a bottom cross-sectional view of the smart oven device of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the spirit of the present invention will be described in detail with reference to the accompanying drawings, and any person skilled in the art can change or modify the techniques taught by the present invention without departing from the spirit and scope of the present invention after understanding the embodiments of the present invention.

The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention. Additionally, the same or similar numbered elements/components used in the drawings and the embodiments are used to represent the same or similar parts.

As used herein, the terms "first," "second," …, etc. do not denote any order or sequential importance, nor are they used to limit the invention, but rather are used to distinguish one element from another or from another element or operation described in the same technical language.

With respect to directional terminology used herein, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology used is intended to be illustrative and is not intended to be limiting of the present teachings.

As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.

As used herein, "and/or" includes any and all combinations of the described items.

As used herein, the terms "substantially", "about" and the like are used to modify any slight variation in quantity or error that does not alter the nature of the variation. Generally, the range of slight variations or errors modified by such terms may be 20% in some embodiments, 10% in some embodiments, 5% in some embodiments, or other values. It should be understood by those skilled in the art that the aforementioned values can be adjusted according to actual needs, and are not limited thereto.

Certain words used to describe the present application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present application.

As shown in fig. 1-4, the utility model discloses an intelligent oven device, which comprises a box body, wherein the box body is divided into an upper box body 1 and a lower box body 2, both ends of the upper part of the upper box body 1 are provided with nine-pin data connectors 4, the upper box body is provided with a baking frame entrance 3, the lower box body 2 is internally provided with a baking box body 5, a gap is arranged between the baking box body and the box body, the baking box body 5 is internally provided with a liner 6, the baking frame is also internally provided with a baking frame, the baking frame comprises a first baking frame 7 and a second baking frame 8, the baking frame is arranged in the liner of the baking box body in a lifting manner, both sides of the first baking frame 7 are provided with first lifting mechanisms, both sides of the second baking frame are provided with second lifting mechanisms, the oven body is internally provided with a first heating plate 9, a second heating plate 10 and a third heating plate 11, the first heating plate 9 is arranged outside the first baking frame 7, second hot plate 9 sets up between first baking frame 7 and second baking frame 8, third hot plate 10 sets up in second baking frame 8's the outside, first hot plate 9, second hot plate 10 and third hot plate 11 all are connected with temperature sensor, temperature sensor is connection director 12 still, cell-phone APP is still connected to controller 12, controller 12 is connected with camera 13, temperature detector 14, code scanner 15, control switch 16 and infrared correlation 17, camera 13 fixes on the lateral wall of the oven body through the mount, temperature detector fixed mounting is on the lateral wall of corresponding baking frame box, code scanner fixed mounting is in the one end of upper box, infrared correlation fixed mounting is at the both ends of upper box and lower box, the lower part of oven body still is equipped with connects food tray 18, the bottom of oven body and inner bag all is equipped with oil leak hole 19, the bottom of the oven body and the bottom of the inner container are arranged to be low in the middle and high in two sides, so that a slope is formed, oil generated during baking can enter an oil receiving disc, the oil receiving disc can move in and out through a moving mechanism and a moving slide rail, the moving mechanism is arranged on one side of the oil receiving disc, the moving mechanism comprises a moving motor, the moving motor is further provided with a moving gear, the moving gear is further connected with a moving rack, the moving gear and the oil receiving disc are integrally formed through injection molding, and the moving slide rail is arranged on the other side of the oil receiving disc;

the first lifting mechanism comprises a first motor 20, rotating shafts 21 are arranged at two ends of the first motor 20, a first corner gear 22 and a second corner gear 23 are connected to the rotating shafts 21, the first corner gear 22 and the upper end of the first corner gear 22 are provided with a first rotating shaft steel sleeve 24, the first rotating shaft steel sleeve 24 is fixed at the lower end of the side wall of the oven body, the first rotating shaft steel sleeve 24 is connected with a first lead screw 25, the upper end of the first lead screw 25 is connected with a second rotating shaft steel sleeve 26, and the second rotating shaft steel sleeve 26 is connected and fixed at the upper end of the side wall of the oven body;

a third rotating shaft steel sleeve 27 is arranged at the upper end of the second corner gear 23, the third rotating shaft steel sleeve 27 is fixed at the lower end of the other side wall of the oven body, a second lead screw 28 is arranged on the third rotating shaft steel sleeve 27, the upper end of the second lead screw 28 is connected with a fourth rotating shaft steel sleeve 29, and the fourth rotating shaft steel sleeve is fixed at the upper end of the other side wall of the oven body;

a seventh rotating shaft steel sleeve is arranged at the upper end of the fourth corner gear, the seventh rotating shaft steel sleeve is fixed at the lower end of the other side wall of the oven body, a fourth lead screw is arranged on the seventh rotating shaft steel sleeve, the upper end of the fourth lead screw is connected with an eighth rotating shaft steel sleeve, the eighth rotating shaft steel sleeve is fixed at the upper end of the other side wall of the oven body, ascending bases 30 are respectively arranged on the first lead screw, the second lead screw, the third lead screw and the fourth lead screw, a lifting frame hanger 31 is arranged on the ascending base 30, and a first baking frame and a second baking frame are both connected with the lifting frame hanger;

the upper box body is provided with a plurality of heat dissipation fans 32, the heat dissipation fans 32 are fixed on one side of the upper box body in a bolt mode, and a plurality of convection heat dissipation holes are formed in the position, corresponding to the heat dissipation fans, of the upper box body;

Through the above, it is easy to find that the oven comprises an oven body which is divided into an upper oven body 1 and a lower oven body 2, nine-pin data connectors 4 are arranged at two ends of the upper part of the upper oven body 1, a baking frame entrance 3 is arranged on the upper oven body 1, an oven body 5 is arranged in the lower oven body, a gap is arranged between the oven body and the oven body, a liner 6 is further arranged in the oven body 5, a baking frame is further arranged in the oven body, the baking frame comprises a first baking frame 7 and a second baking frame 8, the baking frames are arranged in the liner of the oven body in a lifting way, a first lifting mechanism is arranged at two sides of the first baking frame, a second lifting mechanism is arranged at two sides of the second baking frame, so that the first baking frame and the second baking frame are driven to move up and down by arranging the first lifting mechanism and the second lifting mechanism, thereby the oven can be baked conveniently, in addition, the initial temperature of the food, the temperature of the baking process and the temperature of the baked food are controlled through the temperature detector, and the heat inside the cavity is extracted through the heat dissipation fan to dissipate heat for parts such as an internal infrared correlation part, a motor and a board card.

Specifically, the operating principle of the baking system of the intelligent oven device is as follows:

1. before baking: firstly, lifting the lifting frame, identifying the position of the lifting frame by infrared correlation and the like, and stopping at a specific height;

2. baking and pre-assembling: the meat string which is stringed on the bamboo stick (the bamboo stick has a bar code: the type of the identified meat) is placed in the clamping groove position of the lifting frame;

3. baking preparation: the lifting barbecue grill is dropped down, and when the lifting barbecue grill reaches the bottom, the side rack contacts the bottom switch to give an instruction to listen; at the moment, the code scanner starts to work, the bar codes on the meat strings are identified (the types of the meat are distinguished), meanwhile, the temperature sensors on the side surfaces of the grills start to identify the initial temperature of the meat strings, and the computer program starts to give intelligent instructions according to the types of the meat and the initial problems to give baking time and temperature.

4. In the baking process: the camera can photograph the baking degree and process, and the user can share a friend circle; the temperature sensor intelligently controls the working state of the heating plate so as to control the temperature; the generated oil stain can flow into the disposable paper box of the oil receiving box along the flow guide groove; if the oil receiving box is full, the electronic scale below the oil receiving disc can weigh and give a cleaning instruction, a user can control the oil receiving box to be automatically pushed out under the condition that the motor drives the rack, whether the oil receiving box is pushed out is prompted by infrared correlation, and the oil receiving box is determined to stop or start working; when the temperature of the cavity at the top and the bottom of the middle part is too high in work, the heat dissipation fan can be automatically started to work to cool other parts such as a motor, a board card, an infrared part, a camera, a temperature sensor and the like, and the air channel is scientifically designed;

5. and (3) finishing baking: when the meat strings are roasted, the meat strings automatically enter a heat preservation mode, and a temperature sensor gives an instruction to control the power of a heating plate; the user can select to open to enable the lifting frame to lift, the main board gives an instruction at the moment, the motor starts to work, the gear and the rack are driven to work, so that the lifting frame is driven to lift, the rack is arranged on one side of the lifting frame, the slide rail is arranged on the other side of the lifting frame, the lifting frame is controlled to move and lift according to a set track, the lifting frame reaches the specific height after reaching the top end infrared correlation recognition lifting frame, and the lifting; after a short time, the user can take the kebab out of the lifting frame and start to enjoy the food.

6. Cleaning operation: when a user wants to clean the oven, the user can select the mode, the lifting frame automatically lifts to the top end and stops, and the user can hold the top end of the lifting frame by hand to take the lifting frame down; then, the user can take out the top cover body or the cavity integrally, three pillars of the fixed part of the top cover body or the cavity are automatically separated from the nine-pin socket, and the user can see one part of the inner cavity integrally; the user can pull the heating plates one by one, and the cleaning cloth is used for cleaning and wiping the inner wall of the Teflon; and vice versa, the assembly process.

Moreover, it should be noted that the first heating plate, the second heating plate and the third heating plate are fixed in the oven body through clamping grooves, and the clamping grooves are fixed on the side wall of the oven body through bolts.

In addition, it is worth mentioning that the upper box body 1 and the lower box body 2 are fixed together in a detachable mode, wherein pillars are arranged on three corners of the lower portion of the upper box body, three holes are arranged on three positions, corresponding to the pillars, of the upper portion of the lower box body, and the pillar insertion holes play a role in fixing, so that the upper box body and the lower box body can be fixed together.

In addition, it should be noted that the inner wall of the oven body is coated with teflon, so that the oven body is easier to clean, and meanwhile, a hollow heat insulation space is formed between the oven body and the outer cavity.

Further, the lower part of the oil receiving disc is also provided with an electronic scale 20, the electronic scale 20 is fixed at the bottom of the lower box body in a bolt or welding mode, the bottom of the lower box body is also provided with a second heat dissipation fan, and the second heat dissipation fan 34 is fixed at the bottom of the lower box body through a bolt.

In addition, it is worth mentioning that the side wall of the lower box body 2 is also provided with an observation port.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An intelligent oven device is characterized by comprising an oven body, wherein the oven body is divided into an upper oven body and a lower oven body, nine-needle data connectors are arranged at two ends of the upper portion of the upper oven body, an entrance and an exit of a baking frame are arranged on the upper oven body, an oven body is arranged in the lower oven body, a gap is arranged between the oven body and the oven body, a liner is further arranged in the oven body, the baking frame is further arranged in the oven body and comprises a first baking frame and a second baking frame, the baking frame is arranged in the liner of the oven body in a lifting manner, first lifting mechanisms are arranged on two sides of the first baking frame, second lifting mechanisms are arranged on two sides of the second baking frame, a first heating plate, a second heating plate and a third heating plate are arranged in the oven body, the first heating plate is arranged on the outer side of the first baking frame, the second heating plate is arranged between the first baking frame and the second baking frame, the third hot plate sets up in the outside of second baking frame, first hot plate, second hot plate and third hot plate all are connected with temperature sensor, temperature sensor still connection director, cell-phone APP is still connected to the controller, the controller is connected with camera, temperature detector, bar code collector, control switch and infrared correlation, the camera passes through the mount to be fixed on the lateral wall of the oven body, temperature detector fixed mounting is on the lateral wall that corresponds baking frame box, bar code collector fixed mounting is in the one end of upper box, infrared correlation fixed mounting is at the both ends of upper box and lower box, the lower part of oven body still is equipped with and connects the food tray, the bottom of oven body and inner bag all is equipped with the oil leak hole, will the bottom of oven body and inner bag sets to middle low both sides height to form a slope, ensure that the oil that produces during the baking can all enter into and connect the food tray, the oil receiving disc moves in and out through a moving mechanism and a moving slide rail, the moving mechanism is arranged on one side of the oil receiving disc, the moving mechanism comprises a moving motor, the moving motor is further provided with a moving gear, the moving gear is further connected with a moving rack, the moving gear and the oil receiving disc are formed by integral injection molding, and the moving slide rail is arranged on the other side of the oil receiving disc;

a seventh rotating shaft steel sleeve is arranged at the upper end of the fourth corner gear, the seventh rotating shaft steel sleeve is fixed at the lower end of the other side wall of the oven body, a fourth lead screw is arranged on the seventh rotating shaft steel sleeve, the upper end of the fourth lead screw is connected with an eighth rotating shaft steel sleeve, the eighth rotating shaft steel sleeve is fixed at the upper end of the other side wall of the oven body, ascending bases are respectively arranged on the first lead screw, the second lead screw, the third lead screw and the fourth lead screw, a lifting frame is arranged on the ascending bases, and a first baking rack and a second baking rack are both connected with a lifting frame hanger;

2. The smart oven apparatus of claim 1, wherein: first hot plate, second hot plate and third hot plate pass through the draw-in groove to be fixed in the oven, the draw-in groove passes through the bolt fastening on the lateral wall of oven body.

3. The smart oven apparatus of claim 1, wherein: the upper box body and the lower box body are fixed together in a detachable mode, wherein pillars are arranged on three corners of the lower portion of the upper box body, three holes are formed in the upper portion of the lower box body corresponding to the three positions of the pillars, and the pillars are inserted into the holes to play a role in fixing.

4. The smart oven apparatus of claim 1, wherein: the inner wall of the oven body is also coated with Teflon.

5. The smart oven apparatus of claim 1, wherein: the lower part of the oil receiving disc is also provided with an electronic scale which is fixed at the bottom of the lower box body in a bolt or welding mode.

6. The smart oven apparatus of claim 1, wherein: the bottom of lower box still is equipped with the second heat dissipation fan, the second heat dissipation fan passes through the bolt fastening in the bottom of lower box.

7. The smart oven apparatus of claim 1, wherein: and the side wall of the lower box body is also provided with an observation port.