Rice steaming cabinet

Abstract

The utility model discloses a rice steaming cabinet, and relates to a cooking utensil. Which comprises a cabinet body and a waste heat recovery assembly, a steam generation assembly is arranged at the bottom of the cabinet body, and is characterized in that the waste heat recovery assembly comprises a water inlet part, an exhaust part and a heat exchange part, one end of the water inlet part is connected with a water source, and the other end of the water inlet part is communicated with the steam generation assembly; the water inlet part and the exhaust part are respectively connected with the heat exchange part, and the water inlet part exchanges heat with the exhaust part through the heat exchange part. The rice steaming cabinet has the advantages that the utilization efficiency of steam waste heat is improved while the rice steaming efficiency of the rice steaming cabinet is improved, and more energy is saved.

Description

Technical Field

[0001] The utility model relates to a cooking appliance, in particular to an improvement of a rice steaming cabinet. Background Art

[0002] As one of the staple foods of Chinese people, rice is generally cooked by steaming. When cooking rice, it is generally suitable for use when the number of people is small, that is, cooking is carried out using an electric rice cooker, etc. In scenarios where many people dine, such as in canteens, a rice steaming cabinet is generally used for steaming rice. A conventional rice steaming cabinet uses a stainless steel cabinet body, so that multiple steaming trays can be placed inside to steam rice, achieving the purpose of a large number of outputs to meet the needs of a large number of uses. When a general steam box is in use, the steam inside it will condense and flow back for reuse when it encounters the relatively cold inner wall of the steam box. And a safety valve generally needs to be set inside a general steam box to maintain the constant pressure inside the steam box. This part of the steam is generally directly discharged. Although a part of the condensed water will be reused when it contacts the inner wall during the discharge process, the heat released during the condensation process will be wasted. Content of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a rice steaming cabinet.

[0004] The utility model is realized by adopting the following technical scheme: A rice steaming cabinet includes a cabinet body and a waste heat recovery component. A steam generating component is provided at the bottom of the cabinet body. The waste heat recovery component includes a water inlet part, an exhaust part and a heat exchange part. One end of the water inlet part is connected to a water source, the other end of the water inlet part is communicated with the steam generating component, the water inlet part and the exhaust part are respectively connected to the heat exchange part, and the water inlet part exchanges heat with the exhaust part through the heat exchange part.

[0005] The exhaust part includes an exhaust pipe, the exhaust pipe is communicated with the cabinet body, and the water inlet part is arranged inside the exhaust pipe.

[0006] The water inlet part includes a front section pipe and a rear section pipe. One end of the front section pipe is communicated with the water source, the other end of the front section pipe is communicated with the heat exchange part, one end of the rear section pipe is communicated with the heat exchange part, and the other end of the rear section pipe passes through the exhaust pipe and extends into the cabinet body and is communicated with the steam generating component.

[0007] The heat exchange part includes a spiral pipe. The spiral pipe is wound and fixed inside the exhaust pipe and there is a channel for steam to escape between the spiral pipe and the exhaust pipe. One end of the spiral pipe is communicated with the front section pipe, and the other end of the spiral pipe is communicated with the rear section pipe.

[0008] A first perforation is opened at one end of the exhaust pipe close to the cabinet body, a second perforation is provided on the outer wall of the cabinet body, and the rear section pipe passes through the first perforation out of the exhaust pipe and passes through the second perforation into the cabinet body.

[0009] The part of the rear section pipe located between the first perforation and the second perforation is wound with a heat insulation layer.

[0010] The second perforation is provided at the bottom of the cabinet body and above the steam generating assembly, and the rear section pipe extends into the cabinet body through the second perforation and is located above the steam generating assembly.

[0011] The steam generating assembly includes a water tank. The rear section pipe is communicated with the water tank. An electric heating device is provided in the water tank, and a steam outlet for steam to diverge is provided at the top of the water tank.

[0012] Compared with the prior art, when the purified water in the present utility model passes through the exhaust pipe, it will be heated by the exhaust pipe to form warm water. Finally, although it still flows into the steam generating assembly to be heated, since it exchanges heat with the steam before flowing into the steam generating assembly, the heating time can be saved, the steaming efficiency of the rice steaming cabinet can be improved, and the utilization efficiency of the steam waste heat can be improved at the same time, making it more energy-saving. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the rice steaming cabinet in the present utility model;

[0014] Figure 2 is a schematic diagram of the flow direction of the purified water and the steam in the rice steaming cabinet;

[0015] In the figure, the triangular arrow indicates the flow direction of the purified water, and the dotted arrow indicates the flow direction of the steam;

[0016] In the figure: 1. Cabinet body; 2. Steam generating assembly; 21. Water tank; 3. Waste heat recovery assembly; 31. Water inlet part; 311. Front section pipe; 312. Rear section pipe; 32. Heat exchange part; 321. Spiral pipe; 322. First perforation; 323. Second perforation; 33. Exhaust part; 331. Exhaust pipe; 34. Heat insulation layer. Detailed Embodiments

[0017] Next, in combination with the drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following described embodiments or technical features can be combined arbitrarily to form new embodiments.

[0018] Refer to Figure 1-2, A rice steaming cabinet, comprising a cabinet body and a waste heat recovery component. A steam generating component is provided at the bottom of the cabinet body. After the purified water enters the steam generating component, it is heated by the steam generating component to form steam to achieve the function of steaming rice. A steaming tray can be placed in the cabinet body above the steam generating component for steaming rice. Specifically, multiple layers of steaming trays can be placed along the height direction of the cabinet body, and to ensure the steam heating effect, the distance between adjacent steaming trays is preferably set to be the same. To facilitate the taking and placing of the steaming trays, multiple groups of sliding rails can be provided on the inner wall of the cabinet body. When the steaming tray is placed in the cabinet body, the sliding rails cooperate with the steaming tray to support the steaming tray.

[0019] The steam generating component is fixed at the bottom of the cabinet body and at least one water tank is required to store water. Electric heating is used in the steam generating component to make the water in the water tank form steam to fill the entire cabinet body. When the pressure in the cabinet body is too high, the excess steam needs to be discharged. The rice steaming cabinet also has a waste heat recovery component for recovering the waste heat of the discharged steam.

[0020] The waste heat recovery component includes a water inlet part, an exhaust part and a heat exchange part. One end of the water inlet part is connected to a water source, the other end of the water inlet part is communicated with the steam generating component, the water inlet part and the exhaust part are respectively connected to the heat exchange part, and the water inlet part exchanges heat with the exhaust part through the heat exchange part. The exhaust part includes an exhaust pipe, the exhaust pipe is communicated with the cabinet body, and the water inlet part is placed in the exhaust pipe. That is, the excess steam will be discharged from the exhaust pipe.

[0021] The water inlet part includes a front section pipe and a rear section pipe. One end of the front section pipe is communicated with the water source, the other end of the front section pipe is communicated with the heat exchange part, one end of the rear section pipe is communicated with the heat exchange part, and the other end of the rear section pipe passes through the exhaust pipe and extends into the cabinet body and is communicated with the steam generating component. The heat exchange part is coiled in the exhaust pipe. The steam discharged from the exhaust pipe is in full contact with the heat exchange part during the discharge process. Purified water can flow in the heat exchange part, and the steam is used to exchange heat with the purified water in the heat exchange pipe, so that the temperature of the purified water rises. After the temperature of the purified water rises, it is supplied to the steam generating component for heating, which can save fuel and is more environmentally friendly. At the same time, the heat of the discharged steam is fully utilized, and the heat utilization efficiency is high.

[0022] The heat exchange part includes a spiral pipe. The spiral pipe is wound and fixed in the exhaust pipe and there is a channel for steam to escape between the spiral pipe and the exhaust pipe. One end of the spiral pipe is communicated with the front section pipe, and the other end of the spiral pipe is communicated with the rear section pipe. A first perforation is opened at one end of the exhaust pipe close to the cabinet body, and a second perforation is provided on the outer wall of the cabinet body. The rear section pipe passes through the first perforation out of the exhaust pipe and passes through the second perforation into the cabinet body. The part of the rear section pipe between the first perforation and the second perforation is wound with a heat insulation layer. The second perforation is provided at the bottom of the cabinet body and above the steam generating component. The rear section pipe extends into the cabinet body through the second perforation and is placed above the steam generating component.

[0023] During use, the purified water enters the spiral tube through the front section tube. When initially used, since there is no excess steam in the steaming cabinet, it is necessary to directly heat the purified water using the steam generation component. That is, the purified water is sequentially transported to the steam generation component through the front section tube, the spiral tube, and the rear section tube. At this time, the temperature of the purified water is low, and steam is directly generated by heating with the steam generation device. The excess steam after heating the ingredients in the rice steaming cabinet is discharged through the exhaust pipe. At this time, the amount of purified water in the steam generation component decreases and needs to be continuously replenished by the front section tube, the spiral tube, and the rear section tube. And when the purified water passes through the exhaust pipe at this time, it will be heated by the exhaust pipe to form warm water. Eventually, although it still flows into the steam generation component to be heated, because it exchanges heat with the steam before flowing into the steam generation component, the heating time can be saved, the efficiency of the steaming cabinet can be improved, and at the same time, the utilization efficiency of the waste heat of the steam is improved, making it more energy-saving.

[0024] The above-mentioned embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A rice steaming cabinet, comprising a cabinet body and a waste heat recovery component, wherein a steam generating component is provided at the bottom of the cabinet body, characterized in that: The waste heat recovery component includes a water inlet, an exhaust part and a heat exchange part. One end of the water inlet is connected to a water source, and the other end of the water inlet is connected to the steam generating component. The water inlet and the exhaust part are respectively connected to the heat exchange part, and the water inlet exchanges heat with the exhaust part through the heat exchange part.

2. A rice steaming cabinet according to claim 1, characterized in that: The exhaust part comprises an exhaust pipe, the exhaust pipe is communicated with the cabinet, and the water inlet part is arranged in the exhaust pipe.

3. A rice steaming cabinet according to claim 2, characterized in that: The water inlet part includes a front section pipe and a rear section pipe, one end of the front section pipe is connected to a water source, the other end of the front section pipe is connected to a heat exchange part, one end of the rear section pipe is connected to the heat exchange part, and the other end of the rear section pipe passes through the exhaust pipe and extends into the cabinet and is connected to the steam generating assembly.

4. A rice steaming cabinet according to claim 3, characterized in that: The heat exchange part includes a spiral tube, which is wound and fixed in the exhaust pipe and has a passage for steam to escape between the spiral tube and the exhaust pipe. One end of the spiral tube is connected to the front section tube, and the other end of the spiral tube is connected to the rear section tube.

5. The rice steaming cabinet according to claim 3, characterized in that: The exhaust pipe has a first through hole at one end close to the cabinet, and a second through hole is provided on the outer wall of the cabinet. The rear pipe passes through the first through hole to exit the exhaust pipe and passes through the second through hole to enter the cabinet.

6. A rice steaming cabinet according to claim 5, characterized in that: The portion of the rear section pipe disposed between the first through hole and the second through hole is wrapped with a thermal insulation layer.

7. The rice steaming cabinet according to claim 5, characterized in that: The second through hole is arranged at the bottom of the cabinet and is placed above the steam generating assembly. The rear section pipe extends into the cabinet through the second through hole and is placed above the steam generating assembly.

8. The rice steaming cabinet according to claim 3, characterized in that: The steam generating assembly comprises a water tank, the rear section pipe is connected to the water tank, an electric heating device is arranged in the water tank, and a steam outlet for dispersing steam is arranged on the top of the water tank.

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