Steam recovery unit and heating unit

Abstract

To provide a steam recovery device for suitably mixing external air and exhausted steam to promote condensation in a simple construction, and thereby making a region of a steam condensation part smaller to increase the degree of freedom in designing the internal of a casing trunk part.SOLUTION: A suction part 80 of a steam recovery device 1 includes a suction port 31 formed in a casing body 10, a body opening part 21A formed downstream of the suction port in a casing trunk part 20, a hood part 30 via which external air taken in from the suction port flows into the upstream of the body opening part, and a mixing part 110 for promoting the mixture of the external air flowing into the body opening part and steam, the mixture part having a straightening plate 111 for straightening the flow of the mixed gas of the external air and the steam in at least two directions, and an air flow collision region 112 where air flows straightened by the straightening plate go in the directions of colliding with each other.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a steam recovery device and a heating device unit.

Background Art

[0002] A steam convection oven (hereinafter referred to as a heating device) that cooks food using steam is known. The heating device heats and cooks food with steam and hot air. The heating device has a steam discharge port for discharging the steam and hot air generated by cooking provided on the top surface of the device.

[0003] During cooking, the steam discharged from the steam discharge port of the heating device, or the steam discharged by opening the door of the heating device after cooking, is discharged into the kitchen space. Therefore, it is desirable to place the heating device directly below or near the ventilation equipment. However, depending on the kitchen environment, it may not be possible to install the heating device in such a location. At this time, there is a problem that condensation occurs on the ceiling of the facility due to the discharged steam, deteriorating the kitchen environment. For this reason, it is required to recover the steam.

[0004] In relation to this, for example, in Patent Document 1 below, a steam recovery device is disclosed in which a ventilation device is connected above a heating device to recover the steam discharged from the heating device. In the configuration of Patent Document 1, a plurality of baffles are arranged obliquely or vertically in the discharge hood to form a steam passage portion, and the steam is condensed in the steam passage portion and discharged as exhaust air from the outlet opening.

[0005] The steam recovery device disclosed in Patent Document 1 includes a steam condensation portion configured by arranging a large number of baffle plates in a labyrinth structure from near the hood inlet to immediately before the exhaust fan.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

[0007] While the above-mentioned steam recovery system can capture steam and hot air generated when the cooking appliance door is opened and recover the steam within the system, it requires numerous components for steam condensation, increasing component costs. Furthermore, the large area occupied by the steam condensation section imposes limitations on the size and placement of blowers and electrical components within the system.

[0008] The present invention was invented to solve the above problems, and aims to provide a steam recovery device that can suitably mix external air and discharged steam with a simple mechanism to promote condensation, thereby reducing the area of ​​the steam condensation section and increasing the design freedom within the housing body. [Means for solving the problem]

[0009] The above objectives of the present invention are achieved by the following means.

[0010] (1) A steam recovery device comprising a housing and for recovering steam and oil fumes generated from a heating device, The aforementioned housing body is An intake section that draws in outside air from around the main body of the housing, An exhaust section for exhausting the external air drawn in at the intake section, The main body air passage through which the external air passing from the intake section to the exhaust section, It has a housing body that forms part of the housing body and houses the blower, The intake section is, An air intake port formed in the housing body, A main body opening formed in the housing body downstream of the air intake, Upstream of the opening of the main body is a hood section into which the outside air taken in from the air intake flows, It has a mixing section that promotes the mixing of the external air and steam flowing into the opening of the main body, The mixing section is A flow straightening plate that straightens the flow of the mixed gas of the external air and the steam in at least two directions, The airflow rectified by the aforementioned rectifier plate After colliding with the plate member and changing its direction of travel to a direction that causes it to collide with the other, They clash with each other I feel like A steam recovery device having a flow collision region.

[0011] (2) The aforementioned air intake port is First air intake and, The steam recovery apparatus according to (1), further comprising a second air intake port that allows external air to flow in from a direction different from the first air intake port.

[0012] (3) In order to discharge a portion of the steam generated inside the heating device to the outside of the heating device, a connecting part is provided that is connected to a steam outlet in the heating device, It further comprises a steam passage section, which is separated from the main air passage and forms a passage through which the steam taken in from the connection section, which is the inlet end, proceeds toward the outlet end, The steam recovery apparatus according to (1) or (2), characterized in that the outlet end of the steam passage is connected upstream of the airflow collision region and downstream of the intake port.

[0013] (4) The aforementioned housing body is A circulation section is provided, which is separated from the main air passage and through which the air surrounding the housing body, taken in from the intake port of the housing body, flows. A steam recovery device according to any one of (1) to (3), further comprising: a secondary air intake port that communicates with the flow section and is located in the intake section at a position closer to the air intake port than the opening of the main body.

[0014] (5) A steam recovery device described in any one of (1) to (4), A heating device unit having the aforementioned heating device.

[0015] (6) The heating device is the heating device unit according to (5), which has a door that can be opened and closed at the opening of the heating chamber.

Advantages of the Invention

[0016] According to the steam recovery device configured as described above, with a simple mechanism, in the mixing section, external air can be mixed with the steam discharged by cooking to promote the condensation of the steam. Furthermore, since the mixing section is arranged near the main body opening, it does not occupy the internal space of the housing main body. From the above, it is possible to preferably mix the external air and the discharged steam to promote condensation, and thereby provide a steam recovery device that can reduce the area of the steam condensation section and increase the design freedom within the housing body.

Brief Description of the Drawings

[0017] [Figure 1] It is a perspective view showing a heating device unit according to an embodiment of the present invention. [Figure 2] It is a perspective view showing a steam recovery device according to this embodiment. [Figure 3] It is a front view showing a steam recovery device according to this embodiment. [Figure 4] It is a perspective cross-sectional view taken along line 4-4 of FIG. 3. [Figure 5] It is an enlarged view of part A in FIG. 4. [Figure 6] It is a cross-sectional view taken along line 4-4 of FIG. 3. [Figure 7] It is a perspective cross-sectional view taken along line 7-7 of FIG. 3. [Figure 8] It is a perspective view when the steam recovery device according to this embodiment is viewed from the rear. [Figure 9] It is a view corresponding to FIG. 8 when the right side panel is removed from the steam recovery device according to this embodiment. [Figure 10] It is a perspective view when the heating device unit according to this embodiment is viewed from the left side. [Figure 11]This figure corresponds to Figure 10 when the left side panel is removed from the steam recovery device according to this embodiment. [Figure 12] This diagram illustrates the configuration of the steam condensation section of the steam recovery apparatus according to this embodiment. [Figure 13] This figure shows the results of the analysis simulation. [Figure 14] This is a side cross-sectional view showing a steam recovery device according to Modification Example 1. [Figure 15] This is a front view showing a steam recovery device according to modified example 2. [Figure 16] This is a side cross-sectional view showing a steam recovery device according to Modification 3. [Modes for carrying out the invention]

[0018] Embodiments of the present invention will be described below with reference to Figures 1 to 12. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant explanations are omitted. Also, the dimensional ratios in the drawings are exaggerated for illustrative purposes and may differ from the actual ratios.

[0019] Figure 1 is a perspective view showing a heating device unit 5 according to an embodiment of the present invention. Figure 2 is a perspective view showing a steam recovery device 1 according to this embodiment. Figure 3 is a front view showing the steam recovery device 1 according to this embodiment. Figure 4 is a perspective cross-sectional view along line 4-4 in Figure 3. Figure 5 is a cross-sectional view along line 5-5 in Figure 3. Figure 6 is a perspective cross-sectional view along line 6-6 in Figure 3. Figure 7 is a perspective view of the steam recovery device 1 according to this embodiment, viewed from the rear. Figure 8 is a diagram corresponding to Figure 7, showing the steam recovery device 1 according to this embodiment with the right side panel 22 removed. Figure 9 is a perspective view of the heating device unit 5 according to this embodiment, viewed from the left side. Figure 10 is a diagram corresponding to Figure 9, showing the steam recovery device 1 according to this embodiment with the left side panel 23 removed. Figure 11 is a diagram illustrating the configuration of the steam condensation section 60 of the steam recovery device 1 according to this embodiment. Figure 12 is a diagram illustrating the configuration of the steam condensation section 60 of the steam recovery device 1 according to this embodiment.

[0020] In the following description, the left-right direction when viewing the door 91 of the heating device 90 from the front is referred to as the X direction, the depth direction of the heating device unit 5 is referred to as the Y direction, and the vertical direction is referred to as the Z direction (see Figure 1). Also, in the following description, the air drawn in from the intake section 80 is referred to as "external air A1," and the air drawn in from the intake port 22H of the housing body 10 to the circulation section 29 is referred to as "ambient air A2," and these two are distinguished from each other. Strictly speaking, they cannot be distinguished, but the "external air" drawn in from the first intake port 32 is room temperature air with a relatively low proportion of vapor because it is far from the heating device 90. The "external air" drawn in from the second intake port 33 is room temperature air with a relatively high proportion of vapor because it is close to the heating device 90. The "ambient air" drawn into the circulation section 29 from the intake port 22H of the main enclosure 10 is room temperature air with the lowest proportion of steam, because it is far from the flow path through which the steam generated from the door 91 of the heating device 90 is drawn in.

[0021] As shown in Figure 1, the heating device unit 5 according to this embodiment includes a heating device 90 and a steam recovery device 1. The configuration of the heating device 90 will be described below, but the following description is an example, and the configuration of the heating device 90 is not limited to the following configuration.

[0022] The heating device 90 cooks food by heating it with steam and hot air. The heating device 90 has a door 91 that can be opened and closed, and a steam outlet 92 (see Figures 11 and 12) for discharging steam and hot air generated during cooking. The steam outlet 92 is connected to the connection part 62 (see Figure 12) of the steam recovery device 1.

[0023] The door 91 is provided in the opening 90H on the front side of the heating device unit 5. The steam outlet 92 is provided on the top surface of the heating device 90.

[0024] During cooking in the heating device 90, the steam S1 inside the heating device 90 flows into the steam condensation section 60 (see Figures 11 and 12), which will be described later, via the steam outlet 92 and the connection section 62. After cooking in the heating device 90, the steam S2 (see Figure 4) inside the heating device 90, which is discharged by opening the door 91, moves from the opening 90H to the positive side in the Z direction and flows into the hood section 30, which will be described later.

[0025] As shown in Figures 1 to 12, the steam recovery device 1 includes a housing body 10, a blower 40 located inside the housing body 10, a collection filter 50 located upstream of the blower 40, and a motor M that rotates the collection filter 50 at high speed. The following describes each component.

[0026] <Main enclosure 10> As shown in Figures 1 to 12, the housing body 10 has a housing section 20 that houses the blower 40 and a hood section 30 that is positioned adjacent to the front side of the housing section 20 in the Y direction. A steam condensation section 60 and a collection filter 50 are provided inside the housing section 20.

[0027] <Housing body 20> As shown in Figures 1 to 11, the housing body 20 includes a front panel 21 on the front side, a right side panel 22 on the right side when viewed from the front, a left side panel 23 on the left side when viewed from the front, a rear panel 24 on the rear side, a top panel 25 on the top surface, a bottom panel 26 on the bottom surface, an inclined panel 27 above the bottom panel 26, and a main air passage 28 provided inside the housing body 20 through which outside air flows from the intake section 80 to the exhaust section 25H.

[0028] As shown in Figures 4 and 5, the front panel 21 has a main body opening 21A which constitutes an intake section 80 that draws in outside air A1 from around the housing body 10.

[0029] Furthermore, as shown in Figure 5, the front panel 21 has a pair of vertical wall portions 21B that extend to the positive side in the Y direction when viewed from the positive side in the X direction. As shown in Figure 5, the lower vertical wall portion 21B has through holes 21H (five in Figure 5), and the main air passage 28 and the steam passage portion 61 of the steam condensation section 60, which will be described later, are connected through the through holes 21H. The through holes 21H correspond to the outlet end 61E of the steam passage portion 61.

[0030] Near the front panel 21, as shown in Figure 5, a mixing section 110 is provided to promote the mixing of external air A1 drawn in from the intake section 80, ambient air A2 taken in from the intake port 22H of the housing body 10 to the flow section 29, and steam S discharged from the heating device 90. In the mixing section 110, the steam S is mixed with the external air A1 and ambient air A2, causing its temperature to decrease and the steam S2 to condense.

[0031] Here, the steam S consists of steam S1 (see Figures 11 and 12) which is generated during cooking and flows to the vicinity of the mixing section 110 through the steam outlet 92, steam condensation section 60, and through-hole 21H, and steam S2 (see Figures 4 and 5) which flows to the vicinity of the mixing section 110 through the intake section 80 of the hood section 30 when the door 91 is opened after cooking.

[0032] As shown in Figure 5, the mixing section 110 includes a flow straightening plate 111 that straightens the flow of the mixed gas of external air A1 and vapor S in two directions, the positive and negative sides in the Z direction, and an airflow collision region 112 in which the mixed gas straightened by the flow straightening plate 111 flows in a direction in which it collides with each other. As shown in Figure 5, the airflow collision region 112 is composed of a pair of plate members 113 that are positioned behind the flow straightening plate 111 in the Y direction. The airflow collision region 112 will now be described in more detail. The components of the mixing section 110 are arranged in the following order from upstream of the airflow: the flow straightening plate 111, a pair of vertical wall sections 21B extending to the positive side in the Y direction, and plate members 113 extending from the Y-direction ends of the vertical wall sections 21B to the positive or negative side in the Z direction. A space is formed between the plate member 113 extending to the positive side in the Z direction and the plate member 113 extending to the negative side in the Z direction for the mixed gas to flow into the housing body 20. To elaborate on the flow of the gas mixture in the airflow collision region 112, the gas mixture is straightened in two directions, positive and negative, in the Z direction by the straightening plate 111. After that, it collides with the vertical wall 21B, changing its course to the positive side in the Y direction, and then collides with the plate member 113, changing its course again to the Z direction. In other words, the gas mixture straightened to the positive side in the Z direction by the straightening plate 111 changes its course to the negative side in the Z direction by the plate member 113, and the gas mixture straightened to the negative side in the Z direction by the straightening plate changes its course to the positive side in the Z direction by the plate member 113, and they collide in the airflow collision region 112, promoting mixing. Thus, since the mixing unit 110 is located near the inlet of the front panel 21 of the housing body 10, there is no need to provide a steam condensation structure such as arranging many baffle plates inside the housing body 10, and it does not occupy the internal space of the housing body 10. In addition, the presence of the vertical wall portion 21B and the plate member 113 narrows the suction gap, so the flow velocity of the mixed gas passing through this gap is increased. As a result, when the mixed gas collides in the airflow collision region 112, the collision becomes violent and mixing is promoted. Furthermore, the increased flow velocity makes it possible to take the mixed gas into the housing body 20 without leakage. Therefore, mixing of external air and steam can be promoted with a simple mechanism, and the design flexibility of the inside of the housing body 10 is ensured.

[0033] Below the front panel 21, a secondary air intake port 21X is formed, as shown in Figures 4, 6, and 7. The secondary air intake port 21X communicates with the airflow section 29, which will be described later. The secondary air intake port 21X is located upstream of the blower 40 in the main air passage 28. The main air passage 28 is located between the air intake port 31 of the hood section 30 and the exhaust section 25H. The secondary air intake port 21X is located in the main air passage 28 formed within the hood section 30. Here, the airflow generated by the blower 40 (the flow of external air A1 and steam S2) will be explained using Figure 4. When the blower 40 is operating, the external air A1 and steam S2 flow from the upstream air intake port 31 into the interior of the housing section 20 via the mixing section 110 formed in the main opening 21A. The external air A1 and steam S2 passing through the inside of the housing body 20 pass through the collection filter 50 and the fan 41 of the blower 40 to reach the exhaust section 25H, which is the downstream end of the main air passage 28 of the steam recovery device 1. Therefore, the area upstream of the blower 40 in the main air passage 28 refers to the area upstream of the blower 40 in the airflow described here. That is, it refers to the area from the intake port 31 (intake section), which is the uppermost point of the airflow in the main air passage 28, to the blower 40. Furthermore, the area upstream of the main air passage 28 refers to the area upstream of the intake section that constitutes the main air passage 28, specifically the area upstream of the airflow in the steam recovery device 1 from the intake section (main opening 21A) shown in Figure 14 (for example, the position 121X).

[0034] The secondary air intake port 21X is located downstream of the second air intake port 33 (described later) and upstream of the main body opening 21A in the main body air passage 28. That is, the secondary air intake port 21X is located on the positive side in the Z direction of the second air intake port 33 and on the negative side in the Z direction of the main body opening 21A. The external air A1 drawn in from the second air intake port 33 passes near the secondary air intake port 21X toward the positive side in the Z direction and reaches the main body opening 21A. With this configuration, the high-temperature steam S2 can be cooled by the surrounding air A2 taken into the hood portion 30 via the secondary air intake port 21X before it enters the inside of the housing body portion 20. As a result, the temperature passing through the inside of the housing body portion 20 decreases, the relative humidity increases, and the steam can be recovered inside the housing body portion 20.

[0035] Furthermore, as shown in Figures 4, 6, and 7, the secondary air intake port 21X is located closer to the second air intake port 33 (described later) than to the main body opening 21A. This configuration allows for optimal cooling of the steam S2 generated when the door 91 of the heating device 90 is opened, enabling a certain level of cooling before the steam S2 enters the interior of the housing body 20 from the main body opening 21A. More specifically, the second air intake port 33 and the secondary air intake port 21X are formed in the negative Z-direction inlet portion of the hood portion 30 (located close to the door 91 of the heating device 90 (the source of steam generation)), while the main body opening 21A is formed above the front panel 21, spaced apart from this inlet portion on the positive Z-direction side. Therefore, ambient air A2 is supplied to the steam S2 generated from the door 91 at the inlet portion via the secondary air intake port 21X, and the ambient air A2 and steam S2 reach the main body opening 21A after a predetermined mixing time. This makes it possible to optimally cool the steam S2 generated when the door 91 of the heating device 90 is opened.

[0036] As shown in Figure 8, the right side panel 22 has an intake port 22H formed in the circulation section 29 for taking in air from around the housing body 10. The ambient air A2 taken in through the intake port 22H on the right side panel 22 is taken into the hood section 30 via the circulation section 29 and the secondary air intake port 21X, as shown in Figure 4.

[0037] In Figure 8, ten intake ports 22H are arranged, and each intake port 22H is formed in a horizontal shape, but the number and shape are not particularly limited. The intake ports 22H are formed at a height (location) that communicates with the flow section 29. The intake ports 22H are formed on the right side panel 22, which is different from the front panel 21 in which the main body opening 21A is formed. With this configuration, since the intake ports 22H are formed away from the intake section 80, ambient cooling air A2 can be suitably circulated to the flow section 29.

[0038] As shown in Figure 10, the left side panel 23 has multiple intake ports 23H for taking in air from around the housing body 10 into the steam condensation section 60. The intake ports 23H are provided on the positive and negative sides in the Z direction. The ambient air taken in from the upper intake ports 23H is supplied to the steam condensation section 60 through slits (not shown) formed in the steam condensation section 60, and the ambient air taken in from the lower intake ports 23H is supplied to the circulation section 29. The number, shape, and position of the intake ports 23H are not particularly limited. With this configuration, ambient air can be supplied to the steam S1 generated from the heating device 90 during cooking, so that the steam can be condensed more effectively in the steam condensation section 60.

[0039] As shown in Figure 1, the top panel 25 is provided with an exhaust section 25H for exhausting the outside air drawn in by the intake section 80. The exhaust section 25H is positioned approximately above the blower 40. The air exhausted from the exhaust section 25H has undergone condensation in the steam condensation section 60, mixing in the mixing section 110, and steam collection by the collection filter 50, making it less likely to cause condensation on the ceiling of the facility.

[0040] As shown in Figure 6, the inclined panel 27 is positioned so as to be tilted upwards towards the negative side in the Y direction. This configuration allows for the drainage of condensation water generated within the housing body 20. More specifically, the inclined panel 27 is tilted so that the condensation water that flows down flows in the depth direction, and also tilted so that it flows from the depth direction towards the connection part 62. Therefore, the condensation water generated within the housing body 20 flows in the depth direction, then towards the connection part 62, and is finally discharged from the connection part 62 to the steam outlet 92 of the heating device 90, and then drained from the drain port, which is in communication with the steam outlet 92, to the drainage channel of a facility outside the heating device. Similarly, the condensation water generated in the steam condensation section 60 flows down the inclined panel 27 and is discharged from the connection part 62.

[0041] A circulation section 29 is formed between the lower panel 26 and the inclined panel 27. The circulation section 29 is formed separately from the main air passage 28. Ambient air A2 taken in from the intake port 22H of the housing body 10 flows through the circulation section 29. As shown in Figure 6, the circulation section 29 is provided on the heating device 90 side of the housing body 10. With this configuration, the circulation section 29 is formed near the bottom of the housing body 10. Therefore, the circulation section 29 functions as an insulating spacer, suppressing heat transfer from the heating device 90 to the housing body 10, and effectively preventing the temperature of the housing body 10 from rising and reducing the cooling effect.

[0042] <Food section 30> The hood section 30 receives external air A1 taken in from the air intake port 31. The hood section 30 is fixed to the housing body 20. The method of fixing the hood section 30 to the housing body 20 is not particularly limited. The hood section 30 has an air intake port 31 which constitutes an air intake section 80 that takes in external air A1.

[0043] As shown in Figure 4, the air intake 31 has a first air intake 32 located above the hood section 30 and a second air intake 33 that allows outside air to flow in from a different direction than the first air intake 32. The second air intake 33 is located close to the heating device 90 when installed in the heating device 90 and opens in the direction from which steam is discharged, thus drawing in steam when the door 91 is open. On the other hand, the first air intake 32 is located above the hood section 30 and mainly draws in outside air. Specifically, as shown in Figure 4, the second air intake 33 is located on the negative side in the Z direction of the hood section 30. At this time, relatively high-temperature steam flows in from the second air intake 33, and relatively low-temperature steam flows in from the first air intake 32. As a result, outside air and steam of different temperatures are unevenly distributed within the space inside the hood section 30, and since this unevenly distributed outside air and steam are mixed in the mixing section 110, the mixing of outside air and steam in the mixing section 110 is further promoted.

[0044] After cooking is performed in the heating device 90, the door 91 is opened, and the steam S2 discharged from the door 91 flows into the intake section 80 in the hood section 30 through the first intake port 32 and the second intake port 33.

[0045] <Steam condensation section 60> The steam condenser 60 condenses the steam S1 discharged from the steam outlet 92 of the heating device 90 during cooking. As shown in Figures 11 and 12, the steam condenser 60 has a steam passage 61 and a connecting part 62 that is connected to the steam outlet 92 of the heating device 90.

[0046] As shown in Figures 11 and 12, the steam passage section 61 is separated from the main air passage 28 and forms a passage through which steam S1 taken in from the connection section 62, which is the inlet end, proceeds to the outlet end 61E. The steam passage section 61 is constructed by arranging a plurality of baffle plates 63 adjacent to each other in the Y direction in a meandering manner so that they are offset in the Z direction.

[0047] In this embodiment, five baffle plates 63 are arranged, but the system is not limited to this. Furthermore, the arrangement of the baffle plates 63 is not limited to the Z direction. Steam S1 discharged from the steam outlet 92 of the heating device 90 during cooking flows into the steam condensation section 60 of the steam recovery device 1 via the connection section 62. The incoming steam S1 collides with the baffle plates 63 as it moves towards the outlet end 61E. As the steam S1 collides with the baffle plates 63, the steam and oil fumes contained in the steam S1 are captured by inertial collision.

[0048] The outlet end 61E of the steam passage section 61 is upstream of the airflow collision region 112 and connected downstream of the first intake port 32 and the second intake port 33. With this configuration, the steam S1 flowing through the steam passage section 61 is also mixed with the outside air A1 and the surrounding air A2 in the mixing section 110 and cooled.

[0049] <Blower 40> The blower 40 is located inside the housing body 10, as shown in Figures 4 and 6. The blower 40 includes a fan 41, a fan motor 42, and a casing 43.

[0050] During cooking, the blower 40 draws in steam S1 discharged from the steam outlet 92 of the heating device 90, external air A1 from the first intake port 32 and the second intake port 33, and ambient air A2 from the intake port 22H. The blower 40 then mixes the steam S1, external air A1, and ambient air A2 in the mixing section 110, takes them in through the collection filter 50, and then discharges them to the outside from the exhaust section 25H of the housing body 20.

[0051] When the door 91 is opened during or after cooking, the blower 40 draws in steam S1 and S2 flowing out from the door 91 via the intake section 80, outside air A1 from the first intake port 32 and the second intake port 33, and ambient air A2 from the intake port 22H. The blower 40 then mixes the steam S2, outside air A1, and ambient air A2 in the mixing section 110, takes them in through the collection filter 50, and then discharges them to the outside through the exhaust section 25H of the housing body 20.

[0052] <Collection filter 50> The collection filter 50 is installed on the front side of the blower 40, as shown in Figures 4 and 6. The collection filter 50 is detachably attached to the shaft of the motor M. The collection filter 50 collects oil from the exhaust air containing oil fumes generated in the heating device 90 by the high-speed rotation of a disc with holes in it. The diameter of the holes in the collection filter 50 is, for example, 0.75 to 5 mm. The shape of the holes is not limited to a circular shape, but may be a triangle, square, regular polygon, or other shape.

[0053] <Motor M> Motor M rotates the collection filter 50 at high speed. Preferably, the speed at which motor M rotates the collection filter 50 is, for example, 230 rpm (Rotations Per Minute) or higher.

[0054] <Thirdary air intake port 150> As shown in Figures 7 and 9, the tertiary air intake 150 is configured to communicate with the airflow section 29. The tertiary air intake 150 supplies ambient air A2 to the inside of the housing body 20. With this configuration, ambient air A2 is supplied to the inside of the housing body 20, which cools and condenses the steam inside the housing body 20, thereby reducing the amount of steam discharged from the exhaust section 25H. In addition, ambient air A2 is supplied to the motor M of the collection filter 50 and the fan motor 42 of the blower 40, so the motors can be cooled. Specifically, as shown in Figures 8 and 9, the tertiary air intake 150 is located inside the housing body 20 when the right side panel 22 is removed, and a rectangular motor cover (not shown) is attached to the fan motor 42. Since the motor cover and the tertiary air intake 150 are in communication, ambient air A2 is supplied to the motor via the tertiary air intake 150 and the motor cover, thereby cooling the motor.

[0055] <Collection Method> Next, a method for recovering steam using the steam recovery device 1 according to this embodiment will be described. Below, the methods for recovering steam S1 discharged from the steam outlet 92 of the heating device 90 during cooking and steam S2 discharged when the door 91 is opened after cooking will be described separately.

[0056] During cooking, the steam S1 discharged from the steam outlet 92 of the heating device 90 is collected in the steam passage 61 of the steam condensation unit 60 by colliding with multiple baffle plates 63. Subsequently, the steam S1 is mixed with external air A1 and ambient air A2 in the mixing unit 110 and cooled. After that, the steam S1 is collected by the collection filter 50 and exhausted from the exhaust unit 25H of the steam recovery device 1.

[0057] Steam S2 released when the door 91 is opened during or after cooking is collected at the air intake 31 of the hood section 30. The steam S2 is then mixed with the outside air A1 and the surrounding air A2 in the mixing section 110 and cooled. The steam S2 is then collected by the collection filter 50 and exhausted from the exhaust section 25H of the steam recovery device 1.

[0058] Normally, the door 91 of the heating device 90 is opened only slightly to release high-temperature steam, and then fully opened to remove food. Therefore, the high-temperature steam is released not over a wide area from the heating device 90, but through a narrow area created by the slight opening. For this reason, it is necessary to effectively cool the steam passing through this narrow area. In this invention, after supplying cooling outside air directly above the door 91 through a secondary air intake 21X, a mixing section 110 is provided where the steam and outside air are mixed before reaching the main body opening 21A. Mixing cooling is performed as the steam and outside air move along the closed surface of the housing body 20 by the Coanda effect, thereby enhancing the cooling effect.

[0059] As described above, the steam recovery device 1 according to this embodiment is a steam recovery device 1 that includes a housing body 10 and recovers steam and oil mist generated from a heating device 90. The housing body 10 includes an intake section 80 that takes in outside air A1 from around the housing body 10, an exhaust section 25H that exhausts the outside air A1 taken in by the intake section 80, a main body air passage 28 through which the outside air A1 from the intake section 80 to the exhaust section 25H passes, and a housing body section 20 that constitutes a part of the housing body 10 and houses a blower 40. The intake section 80 includes an intake port 31 formed in the housing body 10, a main body opening 21A formed in the housing body section 20 downstream of the intake port 31, a hood section 30 upstream of the main body opening 21A through which the outside air A1 taken in from the intake port 31 flows, and a mixing section 110 that promotes the mixing of the outside air A1 and steam S flowing into the main body opening 21A. The mixing section 110 includes a flow straightening plate 111 that straightens the flow of the mixed gas of external air A1 and steam S in at least two directions, and an airflow collision region 112 in which the airflow straightened by the flow straightening plate 111 flows in a direction in which it collides with each other. With the steam recovery device 1 configured in this way, external air A1 can be mixed with the steam S discharged by cooking in the mixing section 110 with a simple mechanism to promote the condensation of steam S. Furthermore, since the mixing section 110 is located near the opening 21A of the main body, it does not occupy the internal space of the housing body 10. As a result, it is possible to provide a steam recovery device 1 that can suitably mix the external air A1 and the discharged steam S to promote condensation, thereby reducing the area of ​​the steam condensation section and increasing the design freedom within the housing body 20.

[0060] Furthermore, the intake port 31 has a first intake port 32 and a second intake port 33 that allows outside air A1 to flow in from a direction different from the first intake port 32. With the steam recovery device 1 configured in this way, steam with a relatively high temperature flows in from the second intake port 33, and steam with a relatively low temperature flows in from the first intake port 32. As a result, steams of different temperatures are mixed in the mixing section 110, which further promotes the mixing of air and steam in the mixing section 110.

[0061] Furthermore, the steam recovery device 1 includes a connection section 62 connected to a steam outlet 92 provided on the heating device 90 in order to discharge a portion of the steam S generated inside the heating device 90 to the outside of the heating device 90, and a steam passage section 61 partitioned from the main air passage 28, forming a passage through which the steam S1 taken in from the connection section 62, which is the inlet end, proceeds toward the outlet end 61E. The outlet end 61E of the steam passage section 61 is connected upstream of the airflow collision region 112 and downstream of the intake port 31. With the steam recovery device 1 configured in this way, the steam S1 flowing through the steam passage section 61 is also mixed with the outside air A1 and the surrounding air A2 in the mixing section 110 and cooled.

[0062] Furthermore, the housing body 10 has a circulation section 29 through which the surrounding air A2 taken in from the intake port 22H of the housing body 10 flows, which is separated from the main body air passage 28, and a secondary intake port 21X which communicates with the circulation section 29 and is provided in the intake section 80 at a position closer to the intake port 31 than to the main body opening 21A. With the steam recovery device 1 configured in this way, the steam discharged by cooking can be mixed with the surrounding air A2 via the secondary intake port 21X with a simple mechanism to promote the condensation of the steam, and the steam flowing into the hood section 30 can be cooled at the inlet of the hood section 30. For example, the steam S2 generated when the door 91 of the heating device 90 is opened can be suitably cooled at the inlet, and a certain amount of cooling can be performed before the steam S2 enters the inside of the housing body 20 from the main body opening 21A. More specifically, a second air intake port 33 and a secondary air intake port 21X are formed in the negative Z-direction inlet portion of the hood portion 30 (located close to the door 91 of the heating device 90 (the source of steam)). On the other hand, the main body opening 21A is formed above the front panel 21, spaced apart from this inlet portion on the positive Z-direction side. As a result, ambient air A2 is supplied to the steam S2 generated from the door 91 at the inlet portion via the secondary air intake port 21X, and the ambient air A2 and steam S2 reach the main body opening 21A after a predetermined mixing time. This makes it possible to effectively cool the steam S2 generated when the door 91 of the heating device 90 is opened.

[0063] <Simulation> A fluid analysis simulation was performed to confirm the effect of the secondary air intake port 21X of the steam recovery device 1 according to the present invention. The results of the analysis are described below.

[0064] The fan requirements for blower 40 are 300m 3 The temperature of the steam S2 discharged when the door 91 of the heating device 90 is opened and flowing into the hood section 30 is set to 105°C, and the temperature around the steam recovery device into which the steam flows through the secondary air intake 21X into the hood section 30 is set to 25°C. The analysis results are shown in Figure 13.

[0065] Figure 13 shows that the white side has a higher temperature, and the temperature decreases as you approach the black side. As shown in Figure 13, by allowing ambient air A2 to flow into the hood section 30 through the secondary air intake 21X, the ambient air A2 and vapor S2 can be suitably mixed to promote condensation.

[0066] The configuration of the steam recovery device 1 according to the present invention has been described above through embodiments and modifications, but the present invention is not limited to the embodiments and modifications described above, and can be modified in various ways within the scope of the claims.

[0067] For example, in the embodiment described above, the secondary air intake port 21X is provided upstream of the blower 40 in the main air passage 28. However, as shown in Figure 14, in the case of a steam recovery device 2 without a hood, the secondary air intake port 121X is provided upstream of the main air passage 128.

[0068] Furthermore, in the embodiment described above, the secondary air intake port 21X was provided in a position closer to the second air intake port 33 than to the main body opening 21A. However, the secondary air intake port may be provided in a position closer to the main body opening than to the second air intake port.

[0069] Furthermore, although the steam recovery device 1 had a tertiary air intake port 150 in the embodiment described above, the tertiary air intake port 150 is not required.

[0070] Furthermore, in the embodiment described above, the flow section 29 is provided on the heating device 90 side of the housing body 10, but the flow section may also be provided on the opposite side of the housing body from the heating device side. Alternatively, if not on the heating device side, it may be on the right side, left side, or rear side.

[0071] Furthermore, in the embodiment described above, the secondary air intake port 21X is provided on the front panel 21, but the secondary air intake port 221X may be provided on the right side panel 22 and / or the left side panel 23, as shown in Figure 15.

[0072] Furthermore, as shown in Figure 16, the secondary air intake port 321X may be located upstream of the blower 40 in the main air passage 28 and downstream of the main opening 21A.

[0073] Furthermore, in the embodiment described above, the steam recovery device 1 is provided with a secondary air intake port 21X that communicates with the flow section 29, but a secondary air intake port is not required.

[0074] Furthermore, in the embodiment described above, the intake port 31 had a first intake port 32 and a second intake port 33, but the intake port 31 may be provided with either the first intake port 32 or the second intake port 33. [Explanation of Symbols]

[0075] 1, 2 Steam recovery equipment, 5. Heating device unit, 10. Main unit of the enclosure, 20. Casing body, 21 Front panel, 21A Main body opening, 21X, 121X, 221X, 321X secondary air intake, 22 Right side panel, 22H Inlet, 25H Exhaust section, 28, 128 Main aisle, 29 Distribution Department, 30 Hood section, 31 Air intake, 32 First air intake, 33 Second air intake, 40 blowers, 50 collection filters, 60 Steam condensation section, 61 Steam passage section, 61E Outlet end of steam passage section, 62 connection part, 63 baffle board, 80 Intake section, 90 heating equipment; 90H opening, 91 doors, 92 Steam outlet, 110 Mixing section, 111 Rectifier, 112 Airflow collision region, 150 tertiary air intake, A1 Outside air, A2 The surrounding air, S: Steam.

Claims

1. A steam recovery device comprising a housing and for recovering steam and oil fumes generated from a heating device, The aforementioned housing body is An intake section that draws in outside air from around the main body of the housing, An exhaust section for exhausting the external air drawn in at the intake section, The main body air passage through which the external air passing from the intake section to the exhaust section, It has a housing body that forms part of the housing body and houses the blower, The intake section is, An air intake port formed in the housing body, A main body opening formed in the housing body downstream of the air intake, Upstream of the opening of the main body is a hood section into which the outside air taken in from the air intake flows, It has a mixing section that promotes the mixing of the external air and the steam flowing into the opening of the main body, The mixing section is A flow straightening plate that straightens the flow of the mixed gas of the external air and the steam in at least two directions, A steam recovery device having an airflow collision region where the airflow rectified by the rectifier plate collides with a plate member, changes its direction of travel to a direction in which it collides with each other, and then collides with each other.

2. The aforementioned air intake port is First air intake and, The steam recovery apparatus according to claim 1, further comprising a second air intake port for introducing external air from a direction different from that of the first air intake port.

3. In order to discharge a portion of the steam generated inside the heating device to the outside of the heating device, a connecting part is provided that is connected to a steam outlet in the heating device, It further comprises a steam passage section, which is separated from the main air passage and forms a passage through which the steam taken in from the connection section, which is the inlet end, proceeds toward the outlet end, The steam recovery device according to claim 1 or 2, characterized in that the outlet end of the steam passage is connected upstream of the airflow collision region and downstream of the intake port.

4. The aforementioned housing body is A circulation section is provided, which is separated from the main air passage and through which the air surrounding the housing body, taken in from the intake port of the housing body, flows. The steam recovery device according to claim 1 or 2, further comprising: a secondary air intake port that communicates with the flow section and is provided in the intake section at a position closer to the intake port than the main body opening.

5. A steam recovery apparatus according to claim 1 or 2, A heating device unit having the aforementioned heating device.

6. The heating device unit according to claim 5, wherein the heating device has a door that can be opened and closed at the opening of the heating chamber.

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