Safety door lock structure for steaming and baking equipment and steaming and baking oven
By incorporating a double-stage locking hook structure into the steam oven door lock, the problem of rapid release of high-temperature steam is solved, thereby improving safety and stability and ensuring safe operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING NEWHIGH KITCHEN EQUIP DEV CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-21
AI Technical Summary
The existing door lock structure of steam ovens can easily release a large amount of high-temperature steam when opened, posing a safety hazard of scalding the operator and spreading smoke.
It adopts a double-stage locking hook structure. The inclined notches of the first-stage and second-stage locking hooks cooperate with the locking shaft. The handle needs to be turned in two different directions to fully open the box door. The high-temperature smoke is released first and then fully opened. Combined with the adjustment structure, the stability and adaptability are improved.
It effectively prevents the rapid release of high-temperature fumes, improves the safety of operators and the environment, prevents misoperation, and enhances the stability and applicability of the door lock.
Smart Images

Figure CN224149319U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the safety of commercial kitchen equipment, specifically a safety door lock structure for steam ovens and a steam oven. Background Technology
[0002] When baking food, an oven generates a large amount of high-temperature steam. Once the food is cooked, opening the oven door releases this steam. Currently, our steam oven doors use a single-stage locking mechanism. This mechanism allows opening the oven door with just one turn of the handle. However, opening the oven door releases a large amount of smoke (high-temperature vapor). If this smoke isn't released beforehand, it can easily reach the operator or spread rapidly to the surrounding area, potentially causing accidents and burns.
[0003] Therefore, for the safety of the operator and the surrounding environment of the oven, it is urgent to upgrade the current door lock structure to improve the safety of oven operation. Summary of the Invention
[0004] The purpose of this invention is to provide a safety door lock structure and a steam oven for steaming and baking equipment, so as to overcome the safety problems existing in the current single-level lock hook.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A safety door lock structure for a steam oven includes a hook and a handle that cooperate with each other. The hook is installed on the housing of the steam oven, and the handle is installed on the door of the steam oven. The front end of the hook is provided with a primary lock hook and a secondary lock hook in sequence. The primary lock hook has a first inclined notch on one side, and the secondary lock hook has a second inclined notch on one side. The second inclined notch is located on the opposite side of the first inclined notch. The front end of the handle is provided with a locking shaft. The locking shaft cooperates with the two lock hooks and the two inclined notches to open and close the door.
[0007] As a further preferred embodiment of this solution, the rotation of the handle drives the locking shaft to rotate together, and the angle of the locking shaft changes during the rotation to engage with the first inclined notch and the second inclined notch.
[0008] As a further preferred embodiment of this solution, the locking shaft is rotatably mounted on a U-shaped bracket.
[0009] As a further preferred embodiment of this solution, the inclination angle of the first and second inclined notches is 30-45 degrees, preferably 45 degrees.
[0010] As a further preferred embodiment of this scheme, the bottom distance between the primary locking hook and the secondary locking hook is 1-3 times the diameter of the locking shaft, preferably 2 times.
[0011] As a further preferred embodiment of this solution, the hook body is mounted on the box body via a locking hook seat, and the hook body and the locking hook seat are interconnected by an adjustment structure.
[0012] As a further preferred embodiment of this solution, the adjustment structure includes an adjustment bolt, an adjustment groove on the lock hook seat, and a fixing screw hole on the hook body, wherein the adjustment bolt passes through the adjustment groove and is fixedly connected to the fixing screw hole.
[0013] As a further preferred embodiment of this solution, the fixing screw hole protrudes outward for embedding into the adjustment groove during installation.
[0014] As a further preferred embodiment of this solution, the end faces of the hook body and the locking hook seat that come into contact with each other are provided with interlocking grooves.
[0015] A steam oven, wherein the steam oven is equipped with the safety door lock structure described above.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] This utility model's safety door lock structure, by incorporating two locking hooks, can pre-release high-temperature fumes from the enclosure, significantly reducing the risk of burns and improving the safety of the operator and the surrounding environment. Simultaneously, by setting beveled notches on different sides of the two locking hooks, allowing them to engage with the locking shaft, the enclosure can only be fully opened by turning the handle in two different directions. This prevents accidental operation, ensuring the door can only be opened according to a safe operating procedure, further enhancing safety. Additionally, the adjustable design between the hook body and the locking hook seat increases the hook's stability and adaptability.
[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the handle structure of this utility model;
[0021] Figure 3 and Figure 4 This is a schematic diagram showing the installation and disassembly of the hook body and locking hook seat of this utility model;
[0022] Figure 5 This is a schematic diagram of the hook structure of this utility model;
[0023] Figure 6This is a schematic diagram of the usage state of this utility model;
[0024] The markings in the diagram are as follows: 1-Hook body, 2-Handle, 3-Hook seat, 4-Hook shaft, 5-First-level hook, 6-Second-sloping notch, 7-First-sloping notch, 8-Second-level hook, 9-Fixing screw hole, 10-Outward protrusion of screw hole, 11-Adjusting groove, 12-Adjusting bolt, 13-Rump joint 13. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] like Figures 1 to 5 As shown, a safety door lock structure for a steam oven includes a hook body 1 and a handle 2 that cooperate with each other. The hook body 1 is installed on the housing of the steam oven, and the handle 2 is installed on the door of the steam oven. The front end of the hook body 1 is provided with a primary locking hook 5 and a secondary locking hook 8 in sequence. The primary locking hook 5 has a first inclined notch 7 on one side, and the secondary locking hook 8 has a second inclined notch 6 on one side. The second inclined notch 6 is located on the opposite side of the first inclined notch 4. The front end of the handle 2 is provided with a locking shaft 4. The locking shaft 4 cooperates with the two locking hooks and the two inclined notches to realize the opening and closing of the door.
[0027] In this embodiment, when the handle 2 rotates, it drives the locking shaft 4 to rotate as well. The locking shaft 4 changes its angle during rotation and then engages with the first inclined notch 7 and the second inclined notch 6. To improve flexibility and avoid jamming, the locking shaft 4 is rotatably mounted on the U-shaped bracket.
[0028] In this embodiment, the inclination angle of the first inclined notch 7 and the second inclined notch 6 is 30-45 degrees, preferably 45 degrees. This way, after rotating the handle by the same angle, pulling it outwards will allow the locking shaft 4 to move out of the blocking hook through the inclined notch.
[0029] In this embodiment, the bottom distance between the primary locking hook 5 and the secondary locking hook 8 is 1-3 times the diameter of the locking shaft, preferably 2 times. This way, after the locking shaft 4 passes through the primary locking hook 5, it will be blocked by the secondary locking hook 8 and remain between the two hooks. At this time, the door will open slightly, but not completely, allowing the high-temperature smoke inside the chamber to be released prematurely through the gap. After the smoke is released, turning the handle 2 in the opposite direction allows the locking shaft 4 to fully open the door through the second inclined notch 6.
[0030] In this embodiment, the hook body 1 is mounted on the housing via a locking hook seat 3, and the hook body 1 and the locking hook seat 3 are interconnected by an adjustment structure. Specifically, the adjustment structure includes an adjustment bolt 12, an adjustment groove 11 on the locking hook seat 3, and a fixing screw hole 9 on the hook body 1. The adjustment bolt 12 passes through the adjustment groove 11 and is fixedly connected to the fixing screw hole 9. In addition, to improve stability, the fixing screw hole 9 protrudes outward for embedding into the adjustment groove 11 during installation. Simultaneously, both the contacting end faces of the hook body 1 and the locking hook seat 3 are provided with mutually engaging and locking grooves 13.
[0031] like Figure 6 As shown, the various working states of this door lock structure during actual use are as follows: First, the door is closed, at which point it is in a stationary state ( Figure 6 a), then turn the handle to the left and pull outward ( Figure 6 (b) At this point, the locking shaft 4 moves out of the first-level locking hook 5 through the first inclined notch 7. It will then be blocked by the second-level locking hook 8 and remain between the two hooks. At this point, the door will open slightly, but not completely. The high-temperature smoke inside the box will then be released through the gap. After the smoke is released, rotate the handle to the right and pull it outward. Figure 6 c), at this point, the locking shaft 4 can fully open the box door through the second inclined notch 6, and finally the handle returns to its original position. Figure 6 d). To close the cabinet door, simply repeat the process in reverse.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit the scope of protection of this utility model in any way, and all technical solutions obtained by equivalent substitution or other means fall within the scope of protection of this utility model. Parts not covered by this utility model are the same as or can be implemented using existing technology.
Claims
1. A safety door lock structure for a steam roaster, characterized by, The device includes a hook and a handle that cooperate with each other. The hook is installed on the housing of the steam oven, and the handle is installed on the door of the steam oven. The front end of the hook has a primary locking hook and a secondary locking hook in sequence. The primary locking hook has a first inclined notch on one side, and the secondary locking hook has a second inclined notch on one side, located on the opposite side of the first inclined notch. The front end of the handle has a locking shaft. The locking shaft cooperates with the two locking hooks and the two inclined notches to open and close the door. The hook is installed on the housing through a locking hook seat. The hook and the locking hook seat are connected to each other through an adjustment structure. The adjustment structure includes an adjustment bolt, an adjustment groove on the locking hook seat, and a fixing screw hole on the hook. The adjustment bolt passes through the adjustment groove and is fixedly connected to the fixing screw hole. The fixing screw hole protrudes outward and is used to embed into the adjustment groove during installation. The contact surfaces of the hook and the locking hook seat are provided with interlocking grooves.
2. The safety door lock structure for a steam roaster according to claim 1, wherein The rotation of the handle causes the locking shaft to rotate together, and the angle of the locking shaft changes during rotation to engage with the first inclined notch and the second inclined notch.
3. The safety door lock structure for a steam roaster according to claim 1, wherein The locking shaft is rotatably mounted on the U-shaped bracket.
4. The safety door lock structure for a steam roaster according to claim 1, wherein The inclination angle of the first and second inclined notches is 30-45 degrees.
5. The safety door lock structure for a steam roaster according to claim 1, wherein The bottom distance between the primary and secondary locking hooks is 1-3 times the diameter of the locking shaft.
6. A steam oven, characterized by The steam oven is equipped with a safety door lock structure as described in any one of claims 1 to 5.