Door body and cooking equipment

Abstract

The utility model relates to a door body and cooking equipment. The door body comprises a glass layer, the glass layer comprises inner glass, inner middle glass, outer middle glass and outer glass which are sequentially arranged at intervals, ventilation gaps are formed among the adjacent inner glass, inner middle glass, outer middle glass and outer glass at intervals, and the upper end and the lower end of each ventilation gap are provided with an air outlet and an air inlet which are communicated with the outside respectively. According to the scheme, the glass layers arranged at intervals form the three ventilation gaps, the ventilation gaps and external air flow are utilized, heat transmitted in the cooking cavity is absorbed through air flow, the door body is cooled, and meanwhile, the inner middle glass and the outer middle glass are arranged between the outer glass and the inner glass at intervals, so that the temperature of the door body is lowered. The heat of the cavity and the inner glass needs to be sequentially transmitted to the inner middle glass and the outer middle glass when being transmitted to the outer glass, so that the difficulty of heat transmission between the inner glass and the outer glass is improved, the temperature of the outer glass is difficult to rise, and the cooling difficulty of the outer glass is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to doors and cooking equipment. Background Art

[0002] For example, in order to beautify the appearance of cooking equipment, or in embedded cooking equipment to avoid protruding and injuring users, the door of a cooking device is usually set to a handleless structure. During the cooking process, the temperature in the cooking cavity will reach a high temperature, so that the door temperature of the cooking device is high during and after the cooking process. In a handleless door, the user needs to hold the outermost glass of the door to close the door. If the temperature of the outer glass is too high, there will be a risk of scalding. Summary of the invention

[0003] Based on this, it is necessary to provide a door body and cooking equipment to address the problem of scalding risks due to overheating of the door body in cooking equipment using a handleless door body.

[0004] A door body, comprising a glass layer, wherein the glass layer comprises inner glass, inner middle glass, outer middle glass and outer glass which are arranged in sequence, ventilation gaps are formed between adjacent inner glass, inner middle glass, outer middle glass and outer glass, and upper and lower ends of the ventilation gaps are respectively provided with air outlets and air inlets which are both connected to the outside.

[0005] In one embodiment, the top heights of the inner middle glass and the outer middle glass are both smaller than the height of the inner glass, and the height of the inner glass is smaller than the height of the outer glass.

[0006] In one of the embodiments, the width of the ventilation gap is L, and L≥5mm.

[0007] A cooking device comprises a main body provided with a cooking cavity and a door body as described in any of the above embodiments, wherein the cooking cavity is provided with an opening, and when the door body covers the main body, the inner glass seals the opening.

[0008] In one embodiment, the main body is provided with an exhaust passage connected to the cooking cavity, and the main body is provided with an exhaust port located above the air outlet and connected to the exhaust passage, and the cooking device also includes an exhaust component acting on the exhaust passage, and the exhaust component is used to make the air flow velocity in the exhaust passage higher than the air flow velocity in the ventilation gap.

[0009] In one of the embodiments, the cooking device is provided with a guide member located in the exhaust channel, the guide member is provided with a through channel arranged along the air flow direction and distributed along the width direction of the door body, and the through channel is connected to the outside to form the exhaust port.

[0010] In one of the embodiments, the outer glass is provided with a groove corresponding to the guide member, and the length of the groove along the width direction of the door body is not less than the length of the through channel along the width direction of the door body, and the bottom wall of the through channel is higher than the bottom wall of the groove and has a height difference h, h≥3mm.

[0011] In one of the embodiments, the door body further includes a connecting piece arranged at the top of the glass layer, the connecting piece is provided with a collecting channel connected to each of the ventilation gaps, and the collecting channel is connected to the outside to form the air outlet.

[0012] In one of the embodiments, the exhaust port is located on a side of the air outlet away from the outer glass, and a distance between the exhaust port and the air outlet is 2 mm-4 mm.

[0013] In one of the embodiments, the distance between the top of the inner middle glass and the upper wall of the collecting channel, and the distance between the top of the outer middle glass and the upper wall of the collecting channel are not less than 10 mm.

[0014] In one embodiment, the connecting piece is recessed with a water storage tank, the water storage tank is located on a side of the connecting piece close to the outer glass, the air outlet is opened on the side wall of the water storage tank and the bottom wall of the air outlet is higher than the bottom of the water storage tank.

[0015] In one of the embodiments, the height difference between the inner middle glass and the top of the cooking cavity, and between the outer middle glass and the top of the cooking cavity is not less than 5 mm.

[0016] In the above scheme, by arranging the door body to have inner glass, inner middle glass, outer middle glass and outer glass arranged in sequence, the spaced glass layers form three ventilation gaps, and utilize the ventilation gaps and external air flow to absorb the heat transferred in the cooking cavity by the air flow, so as to achieve cooling of the door body. At the same time, since the inner middle glass and the outer middle glass are arranged between the outer glass and the inner glass, the heat of the cavity and the inner glass needs to be transferred to the inner middle glass and the outer middle glass in sequence when being transferred to the outer glass, which increases the difficulty of heat transfer between the inner glass and the outer glass, makes it difficult for the temperature of the outer glass to rise, thereby reducing the difficulty of cooling the outer glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of a cooking device in one embodiment of the present application.

[0018] Figure 2 for Figure 1 Front view of the cooking device.

[0019] Figure 3 for Figure 2AA section diagram of the cooking device.

[0020] Figure 4 for Figure 3 A is an enlarged schematic diagram.

[0021] Figure 5 for Figure 1 Schematic diagram of the structure of the door body.

[0022] Figure 6 for Figure 5 Schematic diagram of the structure of the connecting parts.

[0023] Description of reference numerals:

[0024] 100. cooking equipment; 110. door body; 111. inner glass; 112. inner middle glass; 113. outer middle glass; 114. outer glass; 1141. groove; 115. ventilation gap; 116. air inlet; 117. air outlet; 118. connecting piece; 1181. collecting channel; 1182. water storage tank; 120. main body; 121. cooking cavity; 122. exhaust channel; 123. exhaust assembly; 124. exhaust port; 126. guide piece; 1261. through channel; 130. upper glass. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application 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 present application. However, the present application 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 present application, so the present application is not limited by the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that if 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", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0027] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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 this application can be understood according to the specific circumstances.

[0029] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the 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. The first feature being "below", "below" and "below" the 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.

[0030] It should be noted that if 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. If 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. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0031] See also Figures 1 to 4 , Figure 1 FIG. 1 shows a schematic diagram of the structure of a cooking device 100 in an embodiment of the present application. Figure 2 1 shows a front view of a cooking device 100 in an embodiment of the present application. Figure 3 Shows Figure 2 The AA cross-sectional view of the cooking device 100 shown in FIG. Figure 4 for Figure 3 In the enlarged schematic diagram at A in FIG. 1 , a cooking device 100 provided in one embodiment of the present application includes a main body 120 having a cooking cavity 121 and a door body 110 as in any of the above embodiments. The cooking cavity 121 is used to cook food. In this embodiment, the cooking device 100 is a steam oven as an example. The cooking cavity 121 has an opening. When the door body 110 covers the main body 120, the door body 110 seals the opening. Figure 1 and Figure 2 As shown, the cooking device 100 further includes an upper glass 130 , which is connected to the main body 120 and is located above the door body 110 .

[0032] Conventionally, the door 110 used in the cooking device 100 uses three layers of glass to block the heat in the cooking cavity 121. However, after being baked at a temperature above 200° C. for a long time, the temperature of the outer glass 114 is still very high. Figure 5 , Figure 5 FIG. 1 shows a schematic diagram of the structure of a door body 110 in an embodiment of the present application. An embodiment of the present application provides a door body 110, and the door body 110 includes a glass layer, such as Figure 4 and Figure 5 As shown, the glass layer includes an inner glass 111, an inner middle glass 112, an outer middle glass 113 and an outer glass 114 arranged in sequence. Preferably, the inner glass 111, the inner middle glass 112 and the outer middle glass 113 are all Low-E glass (low-radiation glass). Ventilation gaps 115 are formed between the inner glass 111, the inner middle glass 112, the outer middle glass 113 and the outer glass 114. The upper and lower ends of the ventilation gap 115 are respectively provided with an air outlet 117 and an air inlet 116 both connected to the outside, so that the ventilation gap 115 can connect the airflow at the upper and lower ends of the door body 110. When the airflow in the ventilation gap 115 is heated by the heat transfer in the cooking cavity 121, it rises and is discharged from the air outlet 117 under the action of the small heat density. At the same time, the airflow with a lower temperature under the action of air pressure flows in from the air inlet 116 to realize cold air circulation, thereby achieving a cooling effect.

[0033] like Figure 4 and Figure 5 As shown, in one embodiment, the top heights of the inner middle glass 112 and the outer middle glass 113 are both smaller than the height of the inner glass 111, and the height of the inner glass 111 is smaller than the height of the outer glass 114, so that the inner glass 111 is sealed and open when the door body 110 is covered on the main body 120.

[0034] Preferably, the width of the ventilation gap 115 is consistent, that is, the inner glass 111, the inner middle glass 112, the outer middle glass 113 and the outer glass 114 are arranged equidistantly in sequence. In one embodiment, the width of the ventilation gap 115 is L, L ≥ 5 mm, so that the air layer between adjacent glass layers can play a heat insulating role. When the width L of the ventilation gap 115 is less than 5 mm, the hot air inside the ventilation gap 115 does not flow smoothly, affecting the cooling effect of the door body 110.

[0035] like Figure 3 and Figure 4 As shown, in one embodiment, the main body 120 is provided with an exhaust passage 122 connected to the cooking cavity 121, and the main body 120 is provided with an exhaust port 124 located above the air outlet 117 and connected to the exhaust passage 122, as shown in FIG. Figure 3 As shown, the airflow of the exhaust port 124 flows into the gap between the upper glass 130 and the lower glass. The cooking device 100 further includes an exhaust component 123 acting on the exhaust passage 122. Exemplarily, the exhaust component 123 is a fan acting on the exhaust passage 122, which is used to make the hot air in the cooking cavity 121 flow out of the cooking device 100 through the exhaust passage 122 and the exhaust port 124, and the exhaust component 123 is also used to make the airflow speed in the exhaust passage 122 higher than the airflow speed in the ventilation gap 115, so that the airflow speed flowing through the exhaust port 124 is higher than the airflow speed in the air outlet 117, thereby forming a negative pressure zone of the air duct at the exhaust port 124. Under normal conditions, the airflow in the ventilation gap 115 rises slowly only due to its low heat density, and its own flow is relatively slow. If there is no negative pressure zone formed at the exhaust port 124, the cooling effect on the door body 110 is small. By forming a negative pressure area and using air pressure to accelerate the airflow in the ventilation gap 115, the heat between adjacent glass layers is quickly taken out, so that after a long period of high-temperature baking, the temperature of the outer glass 114 can still be maintained at a relatively low temperature, for example, below 65°C, to avoid burns to users.

[0036] like Figure 3 and Figure 4 As shown, in one embodiment, the cooking device 100 is provided with a guide member 126 located in the exhaust channel 122, and the guide member 126 is provided with a through channel 1261 arranged along the air flow direction and distributed along the width direction of the door body 110, so as to guide the hot air through the through channel 1261, reduce the complexity of the hot air flow, avoid turbulence and other problems, and the through channel 1261 is connected to the outside to form an exhaust port 124.

[0037] like Figure 2 and Figure 4 As shown in one embodiment, the outer glass 114 is provided with a groove 1141 corresponding to the guide member 126, and as shown in FIG. Figure 2As shown, the length of the groove 1141 along the width direction of the door body 110 is not less than the length of the through channel 1261 along the width direction of the door body 110. Figure 4 As shown, the bottom wall of the through channel 1261 is higher than the bottom wall of the groove 1141 to prevent the hot air from the guide member 126 from blowing directly to the outer glass 114, and the bottom wall of the through channel 1261 and the bottom wall of the groove 1141 have a height difference h, h ≥ 3mm, to prevent the hot air from the exhaust port 124 from heating the outer glass 114. Compared with directly lowering the height of the outer glass 114, the opening of the groove 1141 has little effect on the size of the gap between the upper glass 130 and the outer glass 114, and takes into account the overall aesthetics of the cooking device 100.

[0038] like Figure 4 and Figure 5 As shown, in one embodiment, the door body 110 further includes a connecting piece 118 disposed at the top of the glass layer, combined with Figure 6 , Figure 6 A schematic structural diagram of a connecting piece 118 in an embodiment of the present application is shown. The connecting piece 118 is provided with a collecting channel 1181 that is connected to each ventilation gap 115 , and the collecting channel 1181 is connected to the outside to form an air outlet 117 .

[0039] like Figure 4 As shown, in one embodiment, the exhaust port 124 is located on the side of the air outlet 117 away from the outer glass 114, and the distance l between the exhaust port 124 and the air outlet 117 is 2mm-4mm. According to Bernoulli's principle, the faster the flow rate, the lower the pressure, and the hot air of the guide member 126 gradually decreases after being blown out. When the distance l between the exhaust port 124 and the air outlet 117 is too large, the wind speed has become smaller when the hot air flows above the air outlet 117, and the pressure difference between the negative pressure zone generated by it and the atmospheric pressure is small. When the distance l between the exhaust port 124 and the air outlet 117 is too small, even close to 0mm, the negative pressure zone formed will not be located directly above the air outlet 117, and the effect of the negative pressure zone cannot be achieved. Exemplarily, in this embodiment, the distance between the exhaust port 124 and the outer surface of the outer glass 114 ranges from 9mm to 12mm, and the distance between the air outlet 117 and the outer surface of the outer glass 114 ranges from 6mm to 8mm.

[0040] like Figure 4 As shown, in one embodiment, the distance S between the top of the inner middle glass 112 and the upper wall of the collecting channel 1181, and the distance S between the top of the outer middle glass 113 and the upper wall of the collecting channel 1181 are not less than 10 mm, so that the hot air in each ventilation gap 115 can flow smoothly to the air outlet 117.

[0041] The hot air discharged through the exhaust port 124 comes from the cooking cavity 121 and contains water vapor. Figure 4 As shown, in one embodiment, the connecting member 118 is recessed with a water storage tank 1182, as shown in FIG. Figure 4 and Figure 6 As shown, in this embodiment, the water storage tank 1182 is formed by the connecting piece 118 and the outer glass 114. The water storage tank 1182 is located on the side of the connecting piece 118 close to the outer glass 114, so that when the ambient temperature is low, the water vapor in the hot air discharged from the exhaust port 124 condenses and naturally falls into the water storage tank 1182. Preferably, the side wall of the water storage tank 1182 away from the outer glass 114 is inclined with a downward slope, so that water droplets can flow into the water storage tank 1182 and avoid entering the interior of the door body 110. The air outlet 117 is opened on the side wall of the water storage tank 1182 and the bottom wall of the air outlet 117 is higher than the bottom of the water storage tank 1182, so as to prevent water from entering the door body 110 through the air outlet 117.

[0042] like Figure 4 As shown, in one embodiment, the height difference H between the top of the inner middle glass 112 and the cooking cavity 121, and the height difference H between the top of the outer middle glass 113 and the cooking cavity 121 are not less than 5 mm, so that the inner middle glass 112 and the outer middle glass 113 can effectively prevent the heat radiation of the cooking cavity 121.

[0043] In the above scheme, by setting the door body 110 to be inner glass 111, inner middle glass 112, outer middle glass 113 and outer glass 114 arranged in sequence, the spaced glass layers form three ventilation gaps 115, and the ventilation gaps 115 are utilized to flow with external air, and the heat transferred in the cooking cavity 121 is absorbed by the air flow to achieve cooling of the door body 110. At the same time, since the inner middle glass 112 and the outer middle glass 113 are spaced between the outer glass 114 and the inner glass 111, the heat of the cavity and the inner glass 111 needs to be transferred to the inner middle glass 112 and the outer middle glass 113 in sequence when being transferred to the outer glass 114, which increases the difficulty of heat transfer between the inner glass 111 and the outer glass 114, makes it difficult for the temperature of the outer glass 114 to rise, thereby reducing the difficulty of cooling the outer glass 114.

[0044] 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.

[0045] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A door body, characterized in that: The door body includes a glass layer, which includes inner glass, inner middle glass, outer middle glass and outer glass that are arranged in sequence, and ventilation gaps are formed between adjacent inner glass, inner middle glass, outer middle glass and outer glass. The upper and lower ends of the ventilation gaps are respectively provided with air outlets and air inlets that are connected to the outside.

2. The door body according to claim 1, characterized in that: The top heights of the inner middle glass and the outer middle glass are both smaller than the height of the inner glass, and the height of the inner glass is smaller than the height of the outer glass.

3. The door body according to claim 1, characterized in that: The width of the ventilation gap is L, and L≥5mm.

4. A cooking device, characterized in that: The invention comprises a main body provided with a cooking cavity and a door body as claimed in any one of claims 1 to 3, wherein the cooking cavity is provided with an opening, and when the door body is covered on the main body, the inner glass seals the opening.

5. The cooking device according to claim 4, characterized in that: The main body is provided with an exhaust passage connected to the cooking cavity, and the main body is provided with an exhaust port located above the air outlet and connected to the exhaust passage. The cooking device also includes an exhaust component acting on the exhaust passage, and the exhaust component is used to make the air flow velocity in the exhaust passage higher than the air flow velocity in the ventilation gap.

6. The cooking device according to claim 5, characterized in that The cooking device is provided with a guide member located in the exhaust channel, and the guide member is provided with a through channel arranged along the air flow direction and distributed along the width direction of the door body, and the through channel is connected with the outside to form the exhaust port.

7. The cooking device according to claim 6, characterized in that The outer glass is provided with a groove corresponding to the guide member, and the length of the groove along the width direction of the door body is not less than the length of the through channel along the width direction of the door body, and the bottom wall of the through channel is higher than the bottom wall of the groove and has a height difference h, h≥3mm.

8. The cooking device according to claim 6, characterized in that The door body further comprises a connecting piece arranged at the top end of the glass layer, wherein the connecting piece is provided with a collecting channel which is in communication with each of the ventilation gaps, and the collecting channel is in communication with the outside to form the air outlet.

9. The cooking device according to claim 8, characterized in that The exhaust port is located at a side of the air outlet away from the outer glass, and a distance l between the exhaust port and the air outlet is 2 mm-4 mm.

10. The cooking device according to claim 8, characterized in that The distances between the top of the inner middle glass and the upper wall of the collecting channel, and between the top of the outer middle glass and the upper wall of the collecting channel are not less than 10 mm.

11. The cooking device according to claim 8, characterized in that The connecting piece is recessed with a water storage tank, and the water storage tank is located on a side of the connecting piece close to the outer glass. The air outlet is opened on the side wall of the water storage tank, and the bottom wall of the air outlet is higher than the bottom of the water storage tank.

12. The cooking device according to claim 4, characterized in that The height differences between the inner middle glass and the cooking cavity, and between the outer middle glass and the cooking cavity are not less than 5 mm.

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