A door assembly for an air-conditioning oven and the air-conditioning oven.

Abstract

This invention provides a door assembly for an air-conditioning oven, comprising a bottom plate, a latch, a door support frame, a door body, and a main unit assembly. The latch includes a first latch protrusion and a second latch protrusion. The door support frame includes first and second latch protrusion insertion slots and rib through holes. The door body includes first and second latch through holes and door body limiting ribs. The bottom plate is fixedly connected to the bottom surface of the main unit assembly. The door support frame is fixedly connected to the cooking cavity opening of the main unit assembly. The door body is fastened to the outside of the main unit assembly and is movably connected to the door support frame. The door body limiting ribs are inserted from top to bottom and pass through the rib through holes. The first latch protrusion and the second latch protrusion pass through the first and second latch through holes, respectively, and are inserted into and fixedly connected to the first and second latch insertion slots.

Description

Technical Field

[0001] This invention relates to the field of air vent ovens for kitchen appliances, and more particularly to a door assembly for an air vent oven and an air vent oven. Background Technology

[0002] As living standards continue to improve, consumers have increasingly diverse demands for cooking methods, and a growing pursuit of healthy, flavorful, and aromatic dishes. They also have higher expectations for cooking utensils, hoping for appliances that can provide a perfect cooking experience. However, given the limited space in kitchens, single-function kitchen appliances are insufficient to meet consumer needs. Ovens are one such example. They often produce dry food or fail to meet various dietary requirements. Furthermore, their radiant heating system can cause uneven temperatures around the food, prolonging cooking time, affecting texture, and frequently resulting in burnt food.

[0003] In existing oven technology, some air-conditioning ovens utilize heating elements and hot air circulation to cook food, resulting in uniform temperature within the cavity and effectively shortening cooking time. However, the hot air also quickly removes moisture from the food, causing the surface to become dry, thus failing to meet the demand for food that is neither too dry nor too tough, while still achieving a perfect texture. To address this issue, a steam system has been added to existing air-conditioning ovens. Specifically, when the steam function is activated, water in the tank flows to or is drawn into the steam generator, which converts the water into steam. This steam is then introduced into the cavity through conduits to heat the food, cooking various delicious dishes. However, when the steam function is activated, a large amount of high-temperature steam needs to accumulate within the cavity. Consequently, while ensuring sufficient steam accumulation, it is also necessary to prevent steam burns to the user, thus requiring a high level of sealing for the steam oven door structure.

[0004] To address the aforementioned issues, Chinese patent application 202110224055.0 discloses a novel steam oven door. This oven door includes an insulated glass panel, a shell, a water tank, a hinge, and a handle. The shell and the insulated glass panel are connected to form the door body, and a water tank is located inside the door. The insulated glass panel isolates the heat inside the oven, while the water tank facilitates heat exchange and enhances the insulation effect. While this structure can prevent burns to some extent, it has shortcomings: From a user perspective, because the hinge structure in this application lacks a limiting device, the oven door may misalign, leading to heat / steam leakage. Furthermore, the lack of a locking or limiting mechanism when the oven door is opened may cause the door to detach or deform over time, affecting the user experience. From a manufacturer's perspective, using a hinge structure increases production costs, which will ultimately be passed on to consumers through price increases or cost-cutting measures in other areas, impacting the consumer experience.

[0005] Therefore, there is a need to provide a well-designed door assembly for air ventilators that can ensure normal opening and closing functions without misalignment or detachment, and also without increasing manufacturing costs. Summary of the Invention

[0006] To address the above problems, the present invention provides a door assembly for an air-conditioning oven, comprising:

[0007] The lower base plate includes a pin limiting protrusion.

[0008] A pin, the pin including a pin positioning hole, a first pin protrusion and a second pin protrusion, wherein the first pin protrusion and the second pin protrusion are both configured to have a drop in the protrusion direction;

[0009] A door frame support, comprising a pin positioning post, a first protruding insertion groove, a second protruding insertion groove, and a rib through hole;

[0010] The door body includes door limiting ribs, a first protruding through hole, and a second protruding through hole; and

[0011] The main unit assembly includes a cooking chamber opening; wherein,

[0012] The lower base plate is fixedly connected to the bottom surface of the main unit along its longitudinal height direction; the door support frame is fixedly connected to the outer peripheral surface of the cooking cavity opening; the door is fastened to the side surface of the main unit along its longitudinal height direction and is movably connected to the door support frame; the pin positioning hole is sleeved outside the pin limiting protrusion and the pin positioning post; and...

[0013] The door limiting rib is inserted from top to bottom in the longitudinal height direction of the main unit and passes through the rib through hole. The first protrusion of the pin passes through the first protrusion through hole and is inserted and fixedly connected to the first protrusion insertion slot. The second protrusion of the pin passes through the second protrusion through hole and is inserted and fixedly connected to the second protrusion insertion slot.

[0014] According to a preferred embodiment of the present invention, the first protrusion and the second protrusion of the pin are substantially the same in shape and have a cross-sectional shape that is substantially inverted "Z".

[0015] According to a preferred embodiment of the present invention, the door support frame further includes a first pin fixing post and a second pin fixing post, and the pin further includes a first pin fixing hole and a second pin fixing hole. When the pin is fixedly connected to the door support frame, the first pin fixing post is fixedly connected to the first pin fixing hole by a screw connector, and the second pin fixing post is fixedly connected to the second pin fixing hole by a screw connector.

[0016] According to a preferred embodiment of the present invention, the door assembly further includes a bottom cover, the bottom cover 5 further includes a bottom cover fixing hole, the bottom cover is fastened to the lower surface of the lower base plate in the longitudinal height direction relative to the main body assembly, such that the pin is clamped between the bottom cover and the lower base plate, and the bottom cover fixing hole is fixedly connected to the pin positioning post by a screw connector.

[0017] According to a preferred embodiment of the present invention, when the door body is combined with the latch, the door body can rotate clockwise and / or counterclockwise around the door body limiting rib as the axis.

[0018] According to a preferred embodiment of the present invention, when the angle between the door body and the plane where the cooking cavity opening is located is 0 degrees, the door body limiting rib is jointly limited by the pin, the door body support frame and the bottom cover, so that the door body cannot move longitudinally and / or laterally relative to the longitudinal height direction of the main unit.

[0019] According to a preferred embodiment of the present invention, when the angle between the door body and the plane where the cooking cavity opening is located is 90 degrees, the door body limiting rib is jointly limited by the pin, the door body support frame and the bottom cover, so that the door body cannot move longitudinally and / or laterally relative to the longitudinal height direction of the main unit.

[0020] According to a preferred embodiment of the present invention, the opening of the first protruding through hole is aligned with the opening of the first protruding insertion groove, and the opening of the second protruding through hole is aligned with the opening of the first protruding insertion groove.

[0021] According to a preferred embodiment of the present invention, the fixed connection between the first protrusion of the pin and the first protrusion insertion groove is an interference fit, and the fixed connection between the second protrusion of the pin and the second protrusion insertion groove is an interference fit.

[0022] According to a second aspect of the invention, an air-conditioning oven is provided, the air-conditioning oven including the door assembly and further including a door handle disposed on the outer surface of the door assembly on the opposite side of the cooking cavity opening, and the door handle being fixedly connected to the door assembly by a screw connection.

[0023] This invention provides at least the following technical effects:

[0024] 1. The latch and the door body work together to ensure that the door can open and close normally and will not be misaligned or fall off.

[0025] 2. By eliminating the use of hinges, manufacturing costs are effectively reduced.

[0026] Other features and advantages of this application will be set forth in the following description or may be learned by practicing this application. Attached Figure Description

[0027] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application, but do not constitute a limitation on the technical solutions of this application.

[0028] Figure 1 This is an exploded structural diagram of an air oven according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the door support frame of the door assembly according to an embodiment of the present invention;

[0030] Figure 3a This is a schematic diagram of the latch of the door assembly according to an embodiment of the present invention;

[0031] Figure 3b This is a cross-sectional view of the door assembly's latch along line AA according to an embodiment of the present invention;

[0032] Figure 3c This is a cross-sectional view of the door assembly's latch along line BB in an embodiment of the present invention;

[0033] Figure 4a This is a schematic diagram of the door body of the door body assembly according to an embodiment of the present invention;

[0034] Figure 4b This is a cross-sectional view of the door body assembly along the CC line of an embodiment of the present invention;

[0035] Figure 5This is an exploded structural diagram of the door assembly in the closed state according to an embodiment of the present invention;

[0036] Figure 6 This is an exploded structural diagram of the door assembly in the open state according to an embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1 – Bottom plate;

[0039] 1a – Pin limiting protrusion;

[0040] 2 – Pin;

[0041] 2a – Pin positioning hole; 2b – First protrusion of the pin; 2c – Second protrusion of the pin;

[0042] 2d – First pin fixing hole; 2e – Second pin fixing hole;

[0043] 3 – Door frame support;

[0044] 3a – Pin positioning post; 3b – First protruding insertion slot; 3c – Second protruding insertion slot;

[0045] 3d – First pin fixing post; 3e – Second pin fixing post; 3f – Rib through hole;

[0046] 4 – Gate body;

[0047] 4a – Door limiting rib; 4b – First protruding through hole; 4c – Second protruding through hole;

[0048] 5 – Bottom cover;

[0049] 5a – Bottom cover fixing hole;

[0050] 6 – Host components;

[0051] 61 - Opening of the cooking cavity;

[0052] 7 – Door handle. Detailed Implementation

[0053] Various exemplary embodiments of the invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the invention or its application or use. The invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the invention thorough and complete, and to fully express the scope of the invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps set forth in these embodiments, the types of different materials used in the components, numerical expressions, and numerical values ​​should be interpreted as merely exemplary and not as limiting.

[0054] See Figure 1 See Figure 4. Figure 1 An exploded view shows a schematic diagram of the door assembly structure. Figure 2 A schematic diagram of the door support frame in the door assembly is shown. Figure 3a A schematic diagram of the latch in the door assembly is shown. Figure 3b and Figure 3c The cross-sectional views of the pin along line AA and along line BB are shown respectively. Figure 4a A schematic diagram of the door body in the door assembly is shown. Figure 4b A cross-sectional view of the door along line CC is shown. It should be noted that in the following description of the specific implementation, the terms "upper," "lower," "inner," and "outer," or similar directional terms, will be used. "Upper" and "lower" are defined as relative concepts of "up" and "lower" in the longitudinal height direction when the oven is placed upright in use; "inner" is defined as the side perpendicular to the plane of the door, pointing vertically towards the interior of the oven cavity from the door's starting surface; "outer" is defined as the side perpendicular to the plane of the door, pointing vertically towards the exterior of the oven cavity from the door's starting surface. The angle between the two directions, "inner" and "outer," is 180 degrees.

[0055] The door assembly consists of six main components: a lower base plate 1, a latch 2, a door support frame 3, a door 4, a bottom cover 5, and a main unit assembly 6. Specifically, a downwardly protruding latch limiting protrusion 1a is provided on the lower surface of the lower base plate 1 near the door 4; the latch 2 has a latch positioning hole 2a extending from top to bottom through the latch 2. In a preferred embodiment, the latch positioning hole 2a is rectangular in shape, and a first latch protrusion 2b and a second latch protrusion 2c are provided on the side of the latch 2 facing the outside of the oven. Furthermore, the first latch protrusion 2b and the second latch protrusion 2c are designed to be the same or substantially the same shape and have a certain drop in the protrusion direction (i.e., towards the outside). (The text then abruptly shifts to a description of a cross-section of line AA.) Figure 3b and the cross section of BB line Figure 3c As shown, the drop is designed in an inverted "Z" shape in the cross-sectional view of the pin 2, that is, the protrusion structure away from the main body of the pin 2 is slightly higher than the protrusion structure connected to the main body of the pin 2.

[0056] The structural diagram of the door support frame 3 is as follows: Figure 1 and Figure 2Shown. In a preferred embodiment, the door body support frame 3 is designed in a "square" shape. Its function is to cooperate with the bolt 2 to connect the host component 6 and the door body 4 to each other, and to provide support for the opening and closing structure of the door body 4. The door body support frame 3 is provided with a bolt positioning column 3a, a first convex plug-in slot 3b, a second convex plug-in slot 3c, and a rib through hole 3f. Among them, the first convex plug-in slot 3b and the second convex plug-in slot 3c are through holes in the shape of a "square", and their sizes can accommodate the first convex 2b of the bolt and the second convex 2c of the bolt to pass through. The rib through hole 3f is a long strip-shaped groove that penetrates the bottom surface of the door body support frame 3, and its size can accommodate the door body limiting rib 4a to pass through. The bolt positioning column 3a is sleeved in the bolt positioning hole 2a of the bolt 2. The functions of the first convex plug-in slot 3b, the second convex plug-in slot 3c, and the rib through hole 3f are to cooperate with the door body support frame 3 and the door body 4 to realize the function of opening and closing the door body. The specific combination method will be further elaborated in the following embodiments.

[0057] The structural diagram of the door body 4 is composed of Figure 1 , Figure 4a and Figure 4b Shown. The door body 4 includes a door body limiting rib 4a, a first convex through hole 4b, and a second convex through hole 4c. When the door body 4 is assembled with the door body support frame 3, the door body 4 will be installed on the outer side of the plane where the door body support frame 3 is located, and the door body 4 can be axially opened and closed around the lower side edge of the door body 4.

[0058] The function of the bottom cover 5 is to fix the door body assembly. At the same time, since the bottom cover 5 is arranged at the lowest end in the height direction of the air oven, the bottom cover 5 also serves as the base of the air oven. The bottom cover 5 is provided with a bottom cover fixing hole 5a that penetrates through the bottom cover 5 longitudinally. When the bottom cover 5 is assembled into the door body assembly, the bottom cover 5 is buckled on the lower surface of the lower bottom plate 1 in the longitudinal height direction relative to the host component 6, so as to clamp the bolt 2 between the bottom cover 5 and the lower bottom plate 1. And, the bottom cover fixing hole 5a is fixedly connected to the bolt positioning column 3a through a screw connector.

[0059] Finally, it is the main body of the air oven, that is, the host component 6. The host component 6 internally loads elements such as a cooking cavity, a heating device, a steam component, and a control component of the air oven to support the operation of the air oven. And a cooking cavity opening 61 is also provided on the side wall of the host component 6. When the entire door body assembly is assembled and the door body 4 is in a closed state, referring to Figure 1 , the door body 4 will be buckled on the outside of the cooking cavity opening 61, completely covering the entire cooking cavity opening 61.

[0060] In Figure 1As can be seen, the lower base plate 1 is fastened to the bottom of the main unit assembly 6, and the "U"-shaped door support frame 3 is fixedly connected to the main unit assembly 6 from the outside, with the opening size in the middle of the door support frame 3 corresponding to the opening 61 of the cooking cavity. The door 4 is movably fastened to the outside of the door support frame 3 and is detachably connected to the door support frame 3. During the opening and / or closing of the door 4, the door 4 will rotate axially around its lower edge to achieve the opening and closing action.

[0061] See also Figure 1 and Figure 3a The diagram also illustrates the connection between the latch and the door assembly. The door support frame 3 is provided with a first latch fixing post 3d and a second latch fixing post 3e for threaded connection with the latch 2. Corresponding to the first latch fixing post 3d, the latch 2 is also provided with a first latch fixing hole 2d, and corresponding to the second latch fixing post 3e, the latch 2 is also provided with a second latch fixing hole 2e. When the door assembly is assembled as a whole, the latch 2 needs to be fixedly connected to the door support frame 3. During the assembly process, the pin 2 needs to be connected to the door frame 3 from below: First, the pin positioning hole 2a is fitted from below onto the outer periphery of the pin limiting protrusion 1a and the pin positioning post 3a. Then, the first pin fixing hole 2d is aligned from below with the first pin fixing post 3d, and the second pin fixing hole 2e is aligned from below with the second pin fixing post 3e. Finally, fastening screws (not shown in the figure) are screwed into the first pin fixing hole 2d and the second pin fixing hole 2e from bottom to top to fix the pin 2 to the door frame 3 by means of threaded connection.

[0062] The opening and closing of the door 4 is mainly achieved through the interaction of the door limiting rib 4a with the first protrusion 2b and the second protrusion 2c of the latch. During assembly:

[0063] First, the door limiting rib 4a is inserted from top to bottom along the longitudinal height direction of the main unit 6 and passes through the rib through hole 3f, aligning the inner surface of the door 4 with the outer surface of the door support frame 3. This is because the door limiting rib 4a has a certain drop (e.g., along the CC line section of the door). Figure 4b As shown, the door limiting rib 4a is located on the side surface of the lowest end of the door body 4 and is configured to protrude slightly outward. Therefore, when the door body 4 is aligned with the door support frame 3, the door limiting rib 4a will be movably and fixedly connected with the rib through hole 3f through this drop, and prevent the door body 4 from sliding off from its current position.

[0064] Secondly, when the door body 4 and the door body support frame 3 are aligned with each other, the "mouth" - shaped opening of the first convex through - hole 4b will be aligned with the "mouth" - shaped opening of the first convex insertion groove 3b in a direction perpendicular to the height direction of the air oven, and the "mouth" - shaped opening of the second convex through - hole 4c will be aligned with the "mouth" - shaped opening of the second convex insertion groove 3c in a direction perpendicular to the height direction of the air oven;

[0065] Finally, when the bolt 2 is inserted into the whole formed by the combination of the door body 4 and the door body support frame 3, the first bolt convex 2b passes through the first convex through - hole 4b, inserts into and is fixedly connected to the first convex insertion groove 3b, and the second bolt convex 2c passes through the second convex through - hole 4c, inserts into and is fixedly connected to the second convex insertion groove 3c.

[0066] It should be noted that in the preferred embodiment, the first bolt convex 2b and the second bolt convex 2c should be simultaneously inserted into the first convex through - hole 4b and the second convex through - hole 4c respectively, and then simultaneously inserted into the first convex insertion groove 3b and the second convex insertion groove 3c respectively. When performing the above assembly actions, the bolt positioning 2a should be simultaneously sleeved on the outer peripheries of the bolt limit convex 1a and the bolt positioning column 3a, and finally, as described in the previous embodiment, the bolt 2 is fastened by means of screw fastening connection. That is, the first bolt fixing column 3d is fixedly connected to the first bolt fixing hole 2d by screw connectors using fastening screws respectively, and the second bolt fixing column 3e is fixedly connected to the second bolt fixing hole 2e by screw connectors. When the assembly is completed, the first convex through - hole 4b and the second convex through - hole 4c should be movably fixedly connected to the first bolt convex 2b and the second bolt convex respectively, enabling the door body 4 to perform axial rotation; the first convex insertion groove 3b and the second convex insertion groove 3c should be fixedly connected to the first bolt convex 2b and the second bolt convex respectively. Therefore, the fixing connection methods of the first bolt convex 2b with the first convex insertion groove 3b and the second bolt convex 2c with the second convex insertion groove 3c should preferably also adopt interference fit to ensure the firmness of the connection between the bolt 2 and the door body support frame 3.

[0067] Please refer to the following together Figure 5 and Figure 6 where Figure 5 shows an exploded structural schematic diagram of the door body assembly in the door - closed state, Figure 6An exploded structural diagram of the door assembly in the open state is shown. When the door 4 is combined with the latch 2, the door 4 can rotate clockwise and / or counterclockwise around the door limiting rib 4a as the axis to realize the opening and closing function of the air oven door.

[0068] Depend on Figure 5 As shown, when the angle between the door 4 and the plane containing the cooking cavity opening 61 is 0 degrees (i.e., when the door 4 is closed), the latch 2, the door support frame 3, and the bottom cover 5 together define the position of the door limiting rib 4a, preventing the door 4 from moving longitudinally and / or laterally relative to the longitudinal height direction of the main unit 6. Therefore, in actual use, when the door is closed, the door assembly will not have problems such as misalignment or displacement due to play, and it cannot shake, ensuring the sealing of the door assembly during cooking.

[0069] Depend on Figure 6 As shown, when the angle between the door body 4 and the plane containing the cooking cavity opening 61 is 90 degrees (i.e., when the door body 4 is in the open state), the latch 2, the door support frame 3, and the bottom cover 5 together define the position of the door limiting rib 4a, preventing the door body 4 from moving longitudinally and / or laterally relative to the longitudinal height direction of the main unit 6. Therefore, in actual use, when the door is opened, the door assembly will not wobble, loosen, or fall off due to insufficient tightness in the connection, ensuring a good user experience when opening the door 4 to take out or put in food.

[0070] In addition, such as Figure 1 As shown, in a preferred embodiment, the air oven of the present invention, in addition to the aforementioned door assembly for convenient opening and closing, also includes a door handle 7. The door handle 7 is located on the outside of the door 4 and is fixedly connected to the door 4 by screws. In a preferred embodiment, for better stability due to two-point positioning, the door handle 7 can be fixedly connected to the door 4 by double fastening screws.

[0071] It should also be noted that by using the door assembly described in this invention, traditional hinges or door hinge connection methods can be completely eliminated, and the assembly can be made of plastic or similar synthetic materials, preferably PBT (Polybutylene Terephthalate), PET (Polyethylene Terephthalate), or PPS (polyphenylene sulfite) as raw materials. In a preferred embodiment, the door assembly can be manufactured quickly and in large quantities through injection molding. Furthermore, while the door assembly disclosed in this invention preferably uses plastic raw materials, it can still be compatible with the use of traditional metals as raw materials, such as die-cast aluminum or higher-cost cast iron. However, regardless of whether metal or plastic is used, it will not fundamentally affect the function of the door assembly of this invention, providing manufacturers with great flexibility and convenience in production.

[0072] Therefore, the door assembly of the air oven of the present invention, through the cooperation of the latch 2 with the door support frame 3 and the door 4, ensures that when the door 4 performs the closing function, it will not cause problems such as misalignment or displacement due to the presence of play, and when it performs the opening function, it will not cause problems such as shaking, loosening, or falling off due to insufficient tightness of the connection.

[0073] The door assembly of the air oven of the present invention achieves the opening and closing of the door 4 through the interlocking of parts, eliminating the need for costly hinges or door hinges, effectively reducing manufacturing costs, indirectly reducing the retail price of the product, and providing consumers with more choices under the same budget conditions.

[0074] In this summary, specific embodiments of the present invention have been described in detail through examples. However, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the invention. It should be understood that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A door assembly for an air-conditioning oven, characterized in that, include: The lower base plate (1) includes a pin limiting protrusion (1a); The pin (2) includes a pin positioning hole (2a), a first pin protrusion (2b), a second pin protrusion (2c), a first pin fixing hole (2d), and a second pin fixing hole (2e), wherein the first pin protrusion (2b) and the second pin protrusion (2c) are both configured to have a drop in the protrusion direction; The door frame (3) includes a pin positioning post (3a), a first protruding insertion groove (3b), a second protruding insertion groove (3c), a rib through hole (3f), a first pin fixing post (3d), and a second pin fixing post (3e). The door body (4) includes a door body limiting rib (4a), a first protruding through hole (4b) and a second protruding through hole (4c); Bottom cover (5), the bottom cover (5) including bottom cover fixing hole (5a); and The main unit (6) includes a cooking cavity opening (61); wherein, The bottom plate (1) is fixedly connected to the bottom surface of the main unit (6) in the longitudinal height direction, the door support frame (3) is fixedly connected to the outer peripheral surface of the cooking cavity opening (61), the door (4) is fastened to the side surface of the main unit (6) in the longitudinal height direction and is movably connected to the door support frame (3) in a separable manner, and the pin positioning hole (2a) is sleeved outside the pin limiting protrusion (1a) and the pin positioning post (3a); The first pin fixing post (3d) is fixedly connected to the first pin fixing hole (2d) by a screw connector, and the second pin fixing post (3e) is fixedly connected to the second pin fixing hole (2e) by a screw connector. The bottom cover (5) is fastened to the lower surface of the lower base plate (1) in the longitudinal height direction relative to the main unit assembly (6), so that the pin (2) is clamped between the bottom cover (5) and the lower base plate (1). The bottom cover fixing hole (5a) is fixedly connected to the pin positioning post (3a) by a screw connector. Furthermore, the door limiting rib (4a) is inserted from top to bottom in the longitudinal height direction of the main unit assembly (6) and passes through the rib through hole (3f). The first protrusion (2b) of the pin passes through the first protrusion through hole (4b) and is inserted and fixedly connected to the first protrusion insertion groove (3b). The second protrusion (2c) of the pin passes through the second protrusion through hole (4c) and is inserted and fixedly connected to the second protrusion insertion groove (3c).

2. The door assembly according to claim 1, characterized in that, When the door body (4) is combined with the latch (2), the door body (4) can rotate clockwise and / or counterclockwise around the door body limiting rib (4a) as the axis.

3. The door assembly according to claim 2, characterized in that, When the angle between the door (4) and the plane containing the cooking cavity opening (61) is 0 degrees, the door limiting rib (4a) is jointly limited by the pin (2), the door support frame (3) and the bottom cover (5), so that the door (4) cannot move longitudinally and / or laterally relative to the longitudinal height direction of the main unit (6).

4. The door assembly according to claim 3, characterized in that, When the angle between the door (4) and the plane containing the cooking cavity opening (61) is 90 degrees, the door limiting rib (4a) is jointly limited by the pin (2), the door support frame (3) and the bottom cover (5), so that the door (4) cannot move longitudinally and / or laterally relative to the longitudinal height direction of the main unit (6).

5. The door assembly according to claim 4, characterized in that, The opening of the first protruding through hole (4b) is aligned with the opening of the first protruding insertion groove (3b), and the opening of the second protruding through hole (4c) is aligned with the opening of the second protruding insertion groove (3c).

6. The door assembly according to claim 5, characterized in that, The first protrusion (2b) of the pin is fixedly connected to the first protrusion insertion groove (3b) by an interference fit, and the second protrusion (2c) of the pin is fixedly connected to the second protrusion insertion groove (3c) by an interference fit.

7. An air-conditioning oven, characterized in that, The air oven includes a door assembly according to any one of claims 1 to 6, and further includes a door handle (7) disposed on the outer surface of the door assembly (4) on the opposite side of the cooking cavity opening (61), and the door handle (7) is fixedly connected to the door assembly (4) by a screw connection.

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