Steam generating device of kitchen equipment

Abstract

The utility model discloses a steam generating device of kitchen equipment, which comprises a barrel body, a steam generator and a steam generator, the heating coil pipe is arranged at the lower part in the cylinder body, and two ends of the heating coil pipe extend out of the lower sealing head to respectively form a heat-conducting oil inlet and a heat-conducting oil outlet; the high-low liquid level meter is mounted at a high liquid level meter opening and a low liquid level meter opening of the cylinder body, and the low liquid level meter opening is higher than the highest point of the heating coil; and the heat-conducting oil heater and the oil pump are communicated with the heat-conducting oil inlet and the heat-conducting oil outlet to form a heat-conducting oil circulation loop. Steam is prepared through indirect heating of high-temperature heat conduction oil, and potential safety hazards and operation complexity caused by use of fuel gas are avoided; meanwhile, the heating efficiency is good, heating power attenuation is reduced, the steam generation efficiency and stability are guaranteed, and the steam cooker is suitable for various devices needing steam cooking and food heating in the catering industry.

Description

Technical Field

[0001] The utility model relates to the field of commercial kitchen equipment, in particular to a steam generating device of kitchen equipment. Background Art

[0002] In the catering industry, using steam for cooking and heating food has become a common practice. Tofu machines, steam boxes, and rice steamers are often used for steam cooking, and these devices usually need to be equipped with special steam generators to provide the required large amounts of steam. Currently, kitchen steam generators on the market are mainly divided into gas steam generators and electric heating steam generators.

[0003] Gas steam generators use combustion as fuel to generate powerful steam by heating cold water flowing through a heat exchanger. However, there are some drawbacks to gas steam generators. First, due to the high temperature and high pressure generated during the combustion process, there are certain safety hazards, and special maintenance and operating skills are required. Secondly, the control system of the gas steam generator is relatively complex, not easy to achieve automatic control, and relatively inconvenient to operate. In addition, the cost of maintaining and repairing the gas steam generator is high.

[0004] Electric heating steam generators use stainless steel heating tubes for heating, which are relatively cheap. However, this type of heating tube is prone to scaling, resulting in a short service life, and the heating power decays severely, affecting the efficiency and stability of steam generation. Utility Model Content

[0005] In order to provide a more stable, efficient and reliable steam supply, the utility model provides a steam generating device for kitchen equipment.

[0006] The technical solution adopted by the utility model is as follows: a steam generating device of kitchen equipment, comprising: a cylinder, serving as a water heating container, consisting of a cylinder body, an upper head and a lower head, the upper head being provided with a steam outlet, and the lower head being provided with a water inlet; a heating coil, placed in the lower part of the cylinder body, with both ends extending to the outside of the lower head, respectively forming a heat transfer oil inlet and a heat transfer oil outlet; a high and low liquid level gauge, installed at a high liquid level gauge port and a low liquid level gauge port of the cylinder body, the low liquid level gauge port being higher than the highest point of the heating coil; a heat transfer oil heater and an oil pump, connected to the heat transfer oil inlet and the heat transfer oil outlet, to form a heat transfer oil circulation loop.

[0007] Preferably, the upper cover is also provided with a manhole, a safety valve port and a pressure gauge port.

[0008] Preferably, a sewage outlet is provided at the lowest point of the lower head.

[0009] Preferably, the heating coil adopts an inner and outer double-layer coil.

[0010] Preferably, the double-layer coil is connected in parallel to the connecting pipes of the heat transfer oil inlet and the heat transfer oil outlet.

[0011] Preferably, the heat transfer oil in the heating coil is heated electrically or by gas.

[0012] Preferably, the thermal oil heater comprises: at least two heating chambers connected in series, which are long and narrow; an electric heating pipe, which is inserted into the heating chamber; a thermal insulation cotton layer, which is arranged outside the heating chamber; an oil return pipe and an oil outlet pipe, which are respectively connected to the heating chambers at both ends, the oil return pipe is connected to the thermal oil outlet, and the oil outlet pipe is connected to the thermal oil inlet.

[0013] Preferably, a plurality of baffles are provided in the heating chamber.

[0014] Preferably, temperature measuring points are provided on the heating chamber and the oil return pipe.

[0015] Preferably, the lower head is provided with a connecting pipe corresponding to the extended section of the heating coil, and the upper and lower ends of the connecting pipe are welded to the extended section of the heating coil.

[0016] The utility model has the following beneficial effects: the utility model prepares steam through indirect heating of high-temperature heat-conducting oil, thus avoiding the potential safety hazards and operational complexity caused by the use of gas; at the same time, it has good heating efficiency, reduces heating power attenuation, ensures the efficiency and stability of steam generation, and is suitable for various equipment in the catering industry that requires steam cooking and food heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view schematic diagram of an embodiment of the utility model (the thermal oil heater is shown).

[0018] Figure 2 In the present utility model embodiment Figure 1 Schematic top view of .

[0019] Figure 3 In the present utility model embodiment Figure 1 Schematic diagram of the top view.

[0020] Figure 4 It is a front view schematic diagram of the heating coil in the embodiment of the utility model.

[0021] Figure 5 It is a top view schematic diagram of the heating coil in the embodiment of the utility model.

[0022] Figure 6 In the present utility model embodiment Figure 1 Enlarged schematic diagram of K.

[0023] Figure 7It is a structural schematic diagram of a thermal oil heater in an embodiment of the utility model.

[0024] Cylinder body 1; upper head 2; lower head 3; heating coil 4; thermal oil heater 5, heating chamber 501, electric heating pipe 502, insulation cotton layer 503, oil return pipe 504, oil outlet pipe 505, baffle 506; connecting pipe 6; steam outlet a, water inlet b, thermal oil inlet c, thermal oil outlet d, high liquid level gauge port e, low liquid level gauge port f, manhole g, safety valve port h, pressure gauge port i, sewage outlet j. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the embodiments and drawings.

[0026] In the embodiment, Figures 1 to 7 As shown, a steam generating device of kitchen equipment includes: a cylinder, as a water heating container, including a cylinder body 1, an upper end cap 2 and a lower end cap 3, the upper end cap 2 is provided with a steam outlet a, and the lower end cap 3 is provided with a water inlet b; a heating coil 4, placed in the lower part of the cylinder body, with both ends extending to the outside of the lower end cap 3, respectively forming a heat transfer oil inlet c and a heat transfer oil outlet d; a high and low liquid level gauge, installed at the high liquid level gauge port e and the low liquid level gauge port f of the cylinder body 1, and the low liquid level gauge port f is higher than the highest point of the heating coil 4; a heat transfer oil heater 5 and an oil pump, connected with the heat transfer oil inlet c and the heat transfer oil outlet d, to form a heat transfer oil circulation loop. This embodiment prepares steam by indirect heating of high-temperature heat transfer oil, avoiding the safety hazards and operational complexity caused by the use of gas; at the same time, it has good heating efficiency, reduces the attenuation of heating power, ensures the efficiency and stability of steam generation, and is suitable for various equipment in the catering industry that requires steam cooking and food heating. On this basis, the high and low liquid level gauges can be used as signal sources for the control valve at the water inlet b. Through automatic control, the water level in the cylinder is maintained between the high liquid level gauge port e and the low liquid level gauge port f, so that the water can submerge the heating coil 4 without overflowing.

[0027] In the embodiment, Figure 1 , 2 As shown, the upper head 2 is also provided with a manhole g, a safety valve port h and a pressure gauge port i. The manhole g is a pressurized manhole to ensure installation and is used for equipment processing and manufacturing and later maintenance such as descaling. The safety valve port h and the pressure gauge port i are used to install the safety valve and the pressure gauge respectively. These safety devices can ensure the safe operation of the device.

[0028] In the embodiment, Figure 1 , 3 As shown, a sewage outlet j is provided at the lowest point of the lower head 3. The sewage outlet j is used for cleaning and discharging sewage and waste, and is used to keep the inside of the barrel 1 clean, thereby ensuring long-term stable and reliable operation of the equipment.

[0029] In the embodiment, Figure 1 , 3 As shown in FIG. 4 , the heating coil 4 is a double-layer coil with inner and outer layers. The double-layer coil has sufficient heat exchange area, so that uniform heating can be achieved, while providing heating efficiency, avoiding local overheating, and ensuring the efficiency and stability of steam generation.

[0030] In the embodiment, Figure 1 , 3 As shown in FIG. 4 , the double-layer coil is connected in parallel to the pipes of the heat transfer oil inlet c and the heat transfer oil outlet d. This connection method makes the temperature of the heat transfer oil in the heating coil 4 more uniform, avoids excessive temperature gradient, and thus ensures heating efficiency.

[0031] In the embodiment, Figure 6 As shown, the lower end cap 3 is provided with a connecting pipe 6 corresponding to the extension section of the heating coil 4, and the upper and lower ends of the connecting pipe 6 are welded to the extension section of the heating coil 4. The welding of the upper and lower ends of the connecting pipe 6 to the extension section of the heating coil 4 can ensure the reliability of the joint between the heating coil 4 and the lower end cap 3 and avoid leakage.

[0032] In the embodiment, the heat transfer oil in the heating coil 4 is heated by electricity or gas. Figure 7 The thermal oil heater 5 shown is an electric heating form. Specifically, the thermal oil heater 5 includes: at least two heating chambers 501 connected in series, which are narrow and long; electric heating pipes 502, which are inserted in the heating chambers 501; a heat preservation cotton layer 503, which is arranged outside the heating chambers 501; an oil return pipe 504 and an oil outlet pipe 505, which are respectively connected to the heating chambers 501 at both ends, the oil return pipe 504 is connected to the thermal oil outlet d, and the oil outlet pipe 505 is connected to the thermal oil inlet c. This embodiment has multiple heating chambers 501 and multiple groups of electric heating pipes 502, so one or more electric heating pipes 502 can be flexibly opened according to the steam demand, thereby meeting the needs of different steam generation amounts.

[0033] In the embodiment, Figure 7 As shown, a plurality of baffles 506 are provided in the heating chamber 501. The baffles 506 play a role in enhancing heat transfer, uniform heating, inhibiting fouling and reducing heat loss during the heating process of the thermal oil.

[0034] In the embodiment, Figure 7 As shown, the heating chamber 501 and the oil return pipe 504 are provided with temperature measuring points. The temperature measuring points play a role in temperature control, fault detection and equipment operation status monitoring in the thermal oil heater. By accurately monitoring the temperature change, the normal operation and efficient operation of the device can be guaranteed. In addition, the heating chamber 501 is also provided with a pressure measuring point.

[0035] Obviously, the above embodiments of the present invention are only examples for explaining the present invention, and are not intended to limit the implementation methods of the present invention. Other obvious changes or modifications derived from the essence of the present invention still fall within the protection scope of the present invention.

Claims

1. A steam generating device for kitchen equipment, characterized in that: include: The cylinder, serving as a water heating container, is composed of a cylinder body (1), an upper end cover (2) and a lower end cover (3), wherein the upper end cover (2) is provided with a steam outlet (a), and the lower end cover (3) is provided with a water inlet (b); The heating coil (4) is placed in the lower part of the cylinder, with both ends extending to the outside of the lower head (3), respectively forming a heat transfer oil inlet (c) and a heat transfer oil outlet (d); High and low liquid level gauges, installed at the high liquid level gauge port (e) and the low liquid level gauge port (f) of the barrel (1), the low liquid level gauge port (f) being higher than the highest point of the heating coil (4); The heat transfer oil heater (5) and the oil pump are connected to the heat transfer oil inlet (c) and the heat transfer oil outlet (d) to form a heat transfer oil circulation loop.

2. The steam generating device of kitchen equipment according to claim 1, characterized in that: The upper head (2) is also provided with a manhole (g), a safety valve port (h) and a pressure gauge port (i).

3. The steam generating device of kitchen equipment according to claim 1, characterized in that: A sewage outlet (j) is provided at the lowest point of the lower head (3).

4. The steam generating device of kitchen equipment according to claim 1, characterized in that: The heating coil (4) is an inner and outer double-layer coil.

5. The steam generating device of kitchen equipment according to claim 4, characterized in that: The double-layer coil is connected in parallel to the connecting pipes of the heat transfer oil inlet (c) and the heat transfer oil outlet (d).

6. The steam generating device of kitchen equipment according to claim 1, characterized in that: The heat transfer oil in the heating coil (4) is heated electrically or by gas.

7. The steam generating device of kitchen equipment according to claim 1, characterized in that: The thermal oil heater (5) comprises: At least two heating chambers (501) connected in series and having a long and narrow shape; An electric heating tube (502) is inserted into the heating chamber (501); A heat-insulating cotton layer (503) arranged outside the heating chamber (501); The oil return pipe (504) and the oil outlet pipe (505) are respectively connected to the heating chamber (501) at both ends; the oil return pipe (504) is connected to the heat transfer oil outlet (d), and the oil outlet pipe (505) is connected to the heat transfer oil inlet (c).

8. The steam generating device of kitchen equipment according to claim 7, characterized in that: A plurality of baffles (506) are arranged in the heating chamber (501).

9. The steam generating device of kitchen equipment according to claim 8, characterized in that: Temperature measuring points are provided on the heating chamber (501) and the oil return pipe (504).

10. The steam generating device of kitchen equipment according to claim 1, characterized in that: The lower end cap (3) is provided with a connecting pipe (6) corresponding to the extension section of the heating coil (4), and the upper and lower ends of the connecting pipe (6) are welded to the extension section of the heating coil (4).

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