Stove, steaming and baking all-in-one machine

Abstract

The utility model relates to a stove, steaming and baking all-in-one machine which comprises a steaming and baking oven and a stove arranged at the top of the steaming and baking oven, and the stove comprises a panel, a chassis, an air duct shell and a knob; the chassis and the lower surface of the panel are fixed to form a containing space therebetween, the air duct shell is located in the containing space, the air duct shell and the lower surface of the panel are attached to form an air duct therebetween, the panel is provided with an air inlet communicated with the air duct, a fan is arranged in the air duct, and the air duct shell is provided with an air outlet corresponding to an outlet of the fan; the knob penetrates through the air duct shell and the air inlet to partially protrude out of the panel, so that an air inlet gap is formed between the knob and the air inlet; the steaming oven comprises an outer oven body and an inner container located in the outer oven body, an equipment space is formed between the outer oven body and the inner container, the air duct shell communicates with an air pipe, one end of the air pipe communicates with the air outlet, and the other end of the air pipe extends to communicate with the equipment space.

Description

Technical Field

[0001] The utility model relates to the technical field related to cooking equipment, in particular to a stove-steaming and baking all-in-one machine. Background Art

[0002] While ensuring product functionality, the stove-steam-and-bake machine has a relatively high space utilization rate in the height direction and is more space-saving. In order to improve the space utilization rate in the height direction, most existing stove-steam-and-bake machines adopt a top-mounted design with hot air blower and heating tube, and the hot air blower is located inside the stove chassis.

[0003] The problem with this configuration is that the temperature inside the stove chassis will be higher, so a cooling system needs to be designed to cool the inside of the stove to ensure that the parts inside the stove can be used normally;

[0004] At present, the cooling systems inside stove-steam-bake machines are mostly used for ventilation and heat dissipation of heat sources such as hot air blowers. However, other components inside the stove and steam-bake oven also have heat dissipation requirements, such as knobs, display screens, etc. These components are mostly designed to be far away from the hot air blower to avoid being affected by the high temperature of the hot air blower. Correspondingly, the cooling system has relatively poor heat dissipation and cooling effect on them, which may cause heat accumulation in the parts after a long time, affecting their service life and even causing damage to the parts. Utility Model Content

[0005] Based on this, it is necessary to provide a stove-steam-bake all-in-one machine whose internal parts are not prone to heat accumulation, in order to solve the problem that the parts far away from the hot air blower in the current stove-steam-bake all-in-one machine are prone to heat accumulation, thus affecting normal use.

[0006] The present application provides a stove-steaming and baking all-in-one machine, comprising a steaming oven and a stove arranged on the top of the steaming oven, wherein the stove comprises a panel, a chassis, an air duct housing and a knob;

[0007] The chassis is fixed to the lower surface of the panel to form a containing space therebetween, the air duct housing is located in the containing space, and the air duct housing is attached to the lower surface of the panel to form an air duct therebetween, an air inlet connected to the air duct is provided on the panel, a fan is provided in the air duct, and the air duct housing is provided with an air outlet corresponding to the outlet of the fan;

[0008] The knob passes through the air duct shell and the air inlet to partially protrude from the panel to form an air intake gap between the knob and the air inlet; the steam oven includes an outer box body and an inner pot located inside the outer box body, and an equipment space is provided between the outer box body and the inner pot. The air duct shell is connected to an air pipe, one end of the air pipe is connected to the air outlet, and the other end extends to connect to the equipment space.

[0009] In one embodiment, the outer box includes an oven door for closing the opening of the inner tank, the side where the oven door is located is the front side of the outer box, and the equipment space is located between the inner tank and the side panel of the outer box.

[0010] In one embodiment, a hot air blower is also provided in the accommodating space, and the air outlet includes a first air outlet facing the hot air blower and a second air outlet connected to the air duct, the second air outlet is located on a side away from the hot air blower relative to the first air outlet, and the air duct extends in a direction away from the hot air blower.

[0011] In one of the embodiments, the stove further includes a heat conducting plate, one end of the heat conducting plate is in contact with the air duct housing, and the other end of the heat conducting plate is in contact with the bottom surface of the knob.

[0012] In one of the embodiments, the air duct housing includes a first step surface, a second step surface, and a third step surface which are distributed in sequence and whose heights decrease successively, the knob passes through the first step surface, the fan is arranged on the third step surface, and the heat conduction plate is in contact with the outer bottom surface of the air duct housing corresponding to the second step surface.

[0013] In one embodiment, the edge of the second step surface close to the third step surface has a liquid retaining rib, and the second step surface is also provided with a liquid discharge port that passes through the air duct housing, and the liquid discharge port is located at the angle formed by the liquid retaining rib and the side wall of the air duct housing.

[0014] In one of the embodiments, a drainage protrusion is provided on the second step surface, the drainage port is opened on the drainage protrusion, and the height of the drainage protrusion is lower than the liquid retaining rib.

[0015] In one of the embodiments, the air duct housing is provided with a knob hole, the knob passes through the knob hole, a waterproof cover is fixed on the knob and is located inside the air duct housing, and the projection of the waterproof cover along the vertical direction completely covers the knob hole.

[0016] In one of the embodiments, the air duct housing has a waterproof protrusion facing the panel, the knob hole is opened on the waterproof protrusion, and the projection of the waterproof cover along the vertical direction completely covers the top surface of the waterproof protrusion.

[0017] In one embodiment, the waterproof cover and the waterproof protrusion are both truncated cone-shaped, the side surface of the waterproof protrusion is parallel to the side surface of the waterproof cover, and the projections of the two in the horizontal direction at least partially overlap.

[0018] In the stove-steam-bake machine, the outside air entering the air duct through the air inlet gap can exchange heat with the knob, thereby cooling the knob; the airflow discharged along the first air outlet can cool the high-temperature area in the accommodating space; the airflow discharged along the air pipe to the equipment space can dissipate heat for the components in the equipment space; the one inlet and two outlets of the cooling system can both achieve the effect of cooling and heat dissipation, and can dissipate heat for the knob and other components in the equipment space while meeting the cooling requirements of the high-temperature area. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of the stove-steaming and baking machine of the present application;

[0020] Figure 2 for Figure 1 Stereoscopic view behind the hidden panel;

[0021] Figure 3 for Figure 1 A three-dimensional image of the middle stove after it is cut open;

[0022] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0023] Figure 5 for Figure 2 A magnified view of the central air duct housing;

[0024] Figure 6 for Figure 5 A stereogram from another angle.

[0025] Figure numerals: 10, panel; 11, air inlet; 20, air duct shell; 20a, first step surface; 20b, second step surface; 20c, third step surface; 21, air outlet; 21a, first air outlet; 21b, second air outlet; 22, liquid retaining rib; 23, drain port; 24, drain protrusion; 25, knob hole; 26, waterproof protrusion; 30, knob; 31, waterproof cover; 40, heat conduction plate; 50, fan; 60, display screen; 70, chassis; 200, hot air blower; 300, air duct; 1, stove; 2, steam oven; 2a, outer box; 2a1, oven door. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0032] Please combine Figures 1 to 4 As shown, the present application provides a stove-steaming and baking all-in-one machine, comprising a steaming oven 2 and a stove 1 arranged on the top of the steaming oven 2, the stove 1 comprising a panel 10, a bottom plate 70, an air duct housing 20 and a knob 30; the bottom plate 70 is fixed to the lower surface of the panel 10 to form a containing space therebetween, the air duct housing 20 is located in the containing space, and the air duct housing 20 is attached to the lower surface of the panel 10 to form an air duct therebetween, an air inlet 11 connected to the air duct is opened on the panel 10, a fan 50 is arranged in the air duct, and a fan 50 is arranged outside the air duct. The shell 20 is provided with an air outlet 21 corresponding to the outlet of the fan 50; the knob 30 passes through the air duct shell 20 and the air inlet 11 to partially protrude from the panel 10 to form an air intake gap between the knob 30 and the air inlet 11; the steam oven 2 includes an outer box body 2a and an inner pot located inside the outer box body 2a, and there is an equipment space between the outer box body 2a and the inner pot, and the equipment space is connected to the outside world. The air duct shell 20 is connected to the air pipe 300, one end of the air pipe 300 is connected to the air outlet 21, and the other end extends to connect with the equipment space.

[0033] Specifically, the air duct housing 20 is sealed and fitted to the panel 10 to form an air duct. When the fan 50 is running, negative pressure is generated inside the air duct. The outside air enters the air duct through the air inlet 11 and is sucked into the fan 50. After passing through the outlet of the fan 50, it is discharged from the air outlet 21 of the air duct to the accommodating space and the equipment space to achieve a cooling and heat dissipation effect.

[0034] In the present application, the outside air entering the air duct through the air inlet gap can exchange heat with the knob 30, thereby cooling the knob 30; the airflow discharged along the first air outlet 21a can cool the high-temperature area in the accommodating space; the airflow discharged along the air pipe 300 to the equipment space can dissipate heat for the components in the equipment space; the one inlet and two outlets of the cooling system can both achieve the effect of cooling and heat dissipation, and can dissipate heat for the knob 30 and other components in the equipment space while meeting the cooling requirements of the high-temperature area.

[0035] It should be noted that due to the small size of the knob 30, the heat accumulation and heat generation are relatively small. Therefore, after the outside cold air completes the heat dissipation of the knob 30 through heat exchange, the air flow temperature is still lower than that of the hot air blower 200, and it still has a relatively good cooling effect on the high temperature area where the hot air blower 200 is located.

[0036] In addition, when the steaming and baking function of the machine is running, the heat from the inner pot will be conducted through the side walls to the equipment space and the power board, oven light, igniter and other areas inside the accommodating space, thereby increasing the temperature. Without other intervention, the temperature rise will exceed its normal usage limit.

[0037] In the present application, when the machine is working, the fan 50 works synchronously, and cold air is continuously blown into the equipment space through the air pipe 300, thereby cooling the equipment space, thereby ensuring that the internal power board, furnace lamp, etc. do not exceed the normal use temperature rise limit.

[0038] More specifically, in some embodiments, the outer box 2a includes an oven door 2a1 for closing the opening of the inner tank, the side where the oven door 2a1 is located is the front side of the outer box 2a, and the equipment space is located between the inner tank and the side panel of the outer box 2a.

[0039] Please refer to Figure 2 As shown, in some embodiments, a hot air blower 200 is also provided in the accommodating space, and the air outlet 21 includes a first air outlet 21a facing the hot air blower 200 and a second air outlet 21b connected to the air duct 300, the second air outlet 21b is located on the side away from the hot air blower 200 relative to the first air outlet 21a, and the air duct 300 extends in a direction away from the hot air blower 200.

[0040] The air duct 300 is kept as far away from the hot air blower 200 as possible, that is, as far away from the heat source as possible, so as to avoid the cold air flow in the air duct 300 being affected by the high temperature area and causing the air flow temperature to be too high.

[0041] Please combine Figure 4 as well as Figure 5 As shown, in some embodiments, the cooker 1 further includes a heat conducting plate 40, one end of the heat conducting plate 40 is in contact with the air duct housing 20, and the other end of the heat conducting plate 40 is in contact with the knob 30;

[0042] In the present application, the opening through which the knob 30 passes on the panel 10 is used as the air inlet 11. Since the knob 30 is far away from the high temperature zone, the air entering the air duct through the air inlet 11 is low-temperature air, and the flow of low-temperature air can cool the knob 30. In addition, the low-temperature air flows along the air duct under the action of the fan 50, which can cool the air duct housing 20. The air duct housing 20 and the knob 30 are connected by the heat conduction plate 40, so the knob 30 can be further cooled.

[0043] The dual cooling effect of low-temperature air flow and heat exchange of the heat conducting plate 40 ensures that the knob 30 will not be affected in normal operation due to heat accumulation.

[0044] Specifically, the heat conducting plate 40 is fitted with the bottom surface of the knob 30; it is not difficult to understand that low-temperature air enters the air duct through the air inlet 11, thereby cooling the upper part of the knob 30, and the heat conducting plate 40 is fitted with the bottom surface of the knob 30, which can cool the bottom of the knob 30, and dissipate heat by cooling the upper and lower sides at the same time, so as to improve the cooling effect of the knob 30 and further reduce the possibility of heat accumulation.

[0045] Please combine Figure 5 as well as Figure 6 As shown, in some embodiments, the cooling structure also includes a display screen 60, which is fixed to the bottom surface of the panel 10 and directly opposite the fan 50; on the one hand, the low-temperature air entering the air duct from the air inlet 11 can cool the display screen 60 when flowing through the display screen 60 area, and on the other hand, the low-temperature air layer can also insulate the display screen 60, further reducing the possibility of heat accumulation in the display screen 60.

[0046] Please refer to Figure 2 As shown, in some embodiments, the first air outlet 21a is directly opposite to the hot air blower 200, so that the low-temperature air blown out through the air duct can directly blow the hot air blower 200, thereby improving the cooling protection effect of the cooling structure of the present application.

[0047] Please combine Figure 3 as well as Figure 5 As shown, in some embodiments, the air duct housing 20 includes a first step surface 20a, a second step surface 20b and a third step surface 20c which are distributed in sequence and whose heights decrease successively, the knob 30 passes through the first step surface 20a, the fan 50 is arranged on the third step surface 20c, and the heat conducting plate 40 is in contact with the outer bottom surface of the air duct housing 20 corresponding to the second step surface 20b.

[0048] Through the air duct design with three step surfaces, after the low-temperature air enters the air duct from the air inlet 11, it flows in an oblique downward direction to enter the fan 50, and the low-temperature airflow flowing in the oblique downward direction can collide with the flat second step surface 20b to fully transfer the cold energy to the air duct housing 20 at the corresponding position, thereby increasing the cooling and heat dissipation effect of the heat conduction plate 40 attached to this position.

[0049] Please combine Figure 3 as well as Figure 5As shown, in some embodiments, the cooling structure includes two knobs 30, two air inlets 11 are provided on the panel 10, and the air duct housing 20 includes two first step surfaces 20a, two second step surfaces 20b and a third step surface 20c, and is arranged in the order of the first step surface 20a, the second step surface 20b, the third step surface 20c, the second step surface 20b and the first step surface 20a. The two knobs 30 respectively penetrate the two first step surfaces 20a.

[0050] Please combine Figure 5 as well as Figure 6 As shown, in some embodiments, the edge of the second step surface 20b close to the third step surface 20c has a liquid retaining rib 22, and the second step surface 20b is also provided with a drainage port 23 that passes through the air duct housing 20, and the drainage port 23 is located at the angle formed by the liquid retaining rib 22 and the side wall of the air duct housing 20.

[0051] The liquid blocking rib 22 can block the liquid entering the air duct when the knob 30 is cleaned or other liquid enters the air duct, preventing it from flowing into the fan 50 and damaging the fan 50; and the drain port 23 can discharge the liquid to the chassis when there is a lot of liquid.

[0052] Preferably, a drainage protrusion 24 is provided on the second step surface 20 b , and the drainage port 23 is opened on the drainage protrusion 24 . The height of the drainage protrusion 24 is lower than the liquid retaining rib 22 .

[0053] Please refer to Figure 4 As shown, in some embodiments, the air duct housing 20 is provided with a knob hole 25 , and the knob 30 passes through the knob hole 25 . A waterproof cover 31 located inside the air duct housing 20 is fixed on the knob 30 , and the projection of the waterproof cover 31 along the vertical direction completely covers the knob hole 25 .

[0054] Preferably, the fitting clearance between the knob hole 25 and the knob 30 is small, which can play a positioning and limiting role to ensure that the knob 30 is installed in place, and the waterproof cover 31 that completely covers the knob hole 25 along the projection can play a waterproof role. When the knob 30 is cleaned or other liquid enters the air duct, it can prevent the liquid from flowing into the valve body at the bottom of the knob 30 through the knob hole 25, thereby protecting the valve body.

[0055] Please refer to Figure 4 As shown, in some embodiments, the waterproof cover 31 is in a frustum shape, which can guide the liquid entering the air duct and guide the liquid outward in the radial direction, thereby further reducing the possibility of the liquid flowing into the knob hole 25 located in the center.

[0056] Please refer to Figure 4As shown, in some embodiments, the air duct housing 20 has a waterproof protrusion 26 facing the panel 10 , the knob hole 25 is opened on the waterproof protrusion 26 , and the projection of the waterproof cover 31 along the vertical direction completely covers the top surface of the waterproof protrusion 26 .

[0057] Preferably, the waterproof protrusion 26 is in a truncated cone shape, and the side surface of the waterproof protrusion 26 is parallel to the side surface of the waterproof cover 31, and the projections of the two along the horizontal direction at least partially overlap.

[0058] The truncated cone-shaped waterproof protrusion 26 can also guide the liquid entering the air duct, guiding the liquid outward in the radial direction, thereby further reducing the possibility of the liquid flowing into the knob hole 25 located in the center; and the side surface of the waterproof protrusion 26 at least partially overlaps with the horizontal projection of the waterproof cover 31, which can prevent water from flowing into the knob hole 25 through the gap between the two, thereby increasing the waterproof performance.

[0059] In some embodiments, the waterproof protrusion 26 is located at the first step portion 20 a . After the liquid guided by the waterproof protrusion 26 flows through the first step portion 20 a to the second step portion 20 b , it can be blocked by the liquid blocking rib 22 and discharged through the drain port 23 .

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A stove-steaming and baking machine, characterized in that: It comprises a steam oven (2) and a cooker (1) arranged on the top of the steam oven (2), wherein the cooker (1) comprises a panel (10), a bottom plate (70), an air duct housing (20) and a knob (30); The chassis (70) is fixed to the lower surface of the panel (10) to form a containing space therebetween, the air duct housing (20) is located in the containing space, and the air duct housing (20) is attached to the lower surface of the panel (10) to form an air duct therebetween, an air inlet (11) communicating with the air duct is provided on the panel (10), a fan (50) is provided in the air duct, and the air duct housing (20) is provided with an air outlet (21) corresponding to the outlet of the fan (50); The knob (30) passes through the air duct housing (20) and the air inlet (11) to partially protrude from the panel (10) so as to form an air intake gap between the knob (30) and the air inlet (11); the steam oven (2) comprises an outer box (2a) and an inner pot located inside the outer box (2a); there is an equipment space between the outer box (2a) and the inner pot, and the equipment space is connected to the outside; the air duct housing (20) is connected to an air pipe (300), one end of the air pipe (300) is connected to the air outlet (21), and the other end extends to be connected to the equipment space.

2. The stove-steaming and baking machine according to claim 1, characterized in that: The outer box (2a) comprises an oven door (2a1) for closing the opening of the inner tank, the side where the oven door (2a1) is located is the front side of the outer box (2a), and the equipment space is located between the inner tank and the side panel of the outer box (2a).

3. The stove-steaming and baking machine according to claim 1, characterized in that: A hot air blower (200) is also provided in the accommodating space, and the air outlet (21) comprises a first air outlet (21a) facing the hot air blower (200) and a second air outlet (21b) connected to the air pipe (300), the second air outlet (21b) being located on a side away from the hot air blower (200) relative to the first air outlet (21a), and the air pipe (300) extends in a direction away from the hot air blower (200).

4. The stove-steaming and baking machine according to claim 1, characterized in that: The stove (1) further comprises a heat conducting plate (40), one end of the heat conducting plate (40) being in contact with the air duct housing (20), and the other end of the heat conducting plate (40) being in contact with the bottom surface of the knob (30).

5. The stove-steaming and baking machine according to claim 4, characterized in that: The air duct housing (20) comprises a first step surface (20a), a second step surface (20b) and a third step surface (20c) which are sequentially distributed and whose heights decrease sequentially; the knob (30) passes through the first step surface (20a); the fan (50) is arranged on the third step surface (20c); and the heat conduction plate (40) is in contact with the outer bottom surface of the air duct housing (20) corresponding to the second step surface (20b).

6. The stove-steaming and baking machine according to claim 5, characterized in that: The second step surface (20b) has a liquid retaining rib (22) at its edge close to the third step surface (20c), and the second step surface (20b) is also provided with a liquid discharge port (23) penetrating the air duct housing (20), the liquid discharge port (23) being located at an angle formed by the liquid retaining rib (22) and the side wall of the air duct housing (20).

7. The stove-steaming and baking machine according to claim 6, characterized in that: The second step surface (20b) has a liquid discharge protrusion (24), the liquid discharge port (23) is opened on the liquid discharge protrusion (24), and the height of the liquid discharge protrusion (24) is lower than the liquid retaining rib (22).

8. The stove-steaming and baking machine according to claim 1, characterized in that: The air duct housing (20) is provided with a knob hole (25), the knob (30) passes through the knob hole (25), and the knob (30) is fixedly provided with a waterproof cover (31) located inside the air duct housing (20), and the projection of the waterproof cover (31) in the vertical direction completely covers the knob hole (25).

9. The stove-steaming and baking machine according to claim 8, characterized in that: The air duct housing (20) has a waterproof protrusion (26) facing the panel (10), the knob hole (25) is opened on the waterproof protrusion (26), and the projection of the waterproof sleeve (31) in the vertical direction completely covers the top surface of the waterproof protrusion (26).

10. The stove-steaming and baking machine according to claim 9, characterized in that: The waterproof sleeve (31) and the waterproof protrusion (26) are both truncated cone-shaped, the side surface of the waterproof protrusion (26) is parallel to the side surface of the waterproof sleeve (31), and the projections of the two in the horizontal direction at least partially overlap.

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