Dual-mode steam generator and cooking box
By designing a dual-mode steam generator, combining instant hot and boiling modes, the problems of too slow water supply and too long steam generation time in the prior art are solved, fast and continuous steam supply is achieved, and the risks of scale deposition and blockage are reduced.
Patent Information
- Application Number
- CN202323601467.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2033-12-28
AI Technical Summary
The existing instant steam generators have problems such as slow water supply, resulting in power outage and incomplete evaporation, while the boiled steam generators have the problem of long steam generation time.
A dual-mode steam generator is designed, including a housing, water inlet coil and heating pipe, using instant heat and boiling water. The instant heat mode forms steam by heating the water in the water inlet coil and reheating through the vaporization chamber to ensure continuous supply of steam; the boiling mode directly evaporates into steam by heating the water in the vaporization chamber.
It realizes rapid steam generation in instant-heating mode, avoiding the problem of dry burning of the heating pipe and discontinuity of steam. At the same time, the steam generation speed is accelerated in the boiling mode, avoiding the problem of excessive steam generation time, and rinsing through hot water in instant-heating mode, reducing the risk of scale deposition and blockage.
Smart Images
Figure CN222669951U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cooking boxes, in particular to a dual-mode steam generator and a cooking box. Background Art
[0002] Existing electric steamers, steam-bake-in-one machines and other cooking boxes usually use external steam generators to provide steam for the cooking box. Steam generators usually include instant heating type and water boiling type.
[0003] During the operation of the instant steam generator, a water pump is used to continuously supply water from the water inlet of the water supply pipe. The water is continuously heated as it flows in the water supply pipe, and is finally heated into steam at the water outlet of the water supply pipe. The advantage of the instant steam generator is that it generates steam quickly, but the disadvantage is that the water supply and heating amount are difficult to control. If the water supply is too slow, it is easy to cause the heater used to heat the water supply pipe to dry out and cause a power outage, resulting in discontinuous steam. If the water supply is too fast, it is easy to cause incomplete evaporation and the problem of hot water spraying into the steam box. In addition, when the water hardness is high, long-term use will make the dissolved substances in the steam easily deposited in the water supply pipe, causing scaling and blockage.
[0004] During the operation of a water-boiling steam generator, a certain amount of water is first injected into the inner cavity of the steam generator, and then heated to produce steam. The advantages are complete evaporation, no water spraying problem, and no water supply pipe blockage problem when the water hardness is high and scale forms. The disadvantage is that it takes about several minutes to heat a certain amount of water and then produce steam, and the speed of steam generation is slow. Utility Model Content
[0005] 1. Technical issues to be resolved
[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a dual-mode steam generator and a cooking box, which solve the technical problems of the existing instant steam generator, such as power outages easily occurring due to slow water supply and incomplete evaporation caused by too fast water supply, and the technical problem of the long steam generation time of the boiling water steam generator.
[0007] (II) Technical solution
[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:
[0009] In a first aspect, an embodiment of the utility model provides a dual-mode steam generator, characterized in that it includes a shell, a water inlet coil and a heating tube;
[0010] The shell has a vaporization cavity, and a steam exhaust port communicating with the vaporization cavity is provided on the shell;
[0011] The water inlet coil is fixed inside the wall of the shell, the water inlet end of the water inlet coil is connected to the outside of the shell, and the steam outlet end of the water inlet coil is connected to the vaporization chamber;
[0012] The heating pipe is fixed inside the wall of the shell, and heats the water inlet coil and the vaporization chamber through the shell. The steam outlet end of the water inlet coil delivers steam and water into the vaporization chamber.
[0013] According to the utility model, the housing comprises a bottom shell and a cover body;
[0014] The bottom shell has a concave cavity with an opening facing upward, and the cover body is disposed on the concave cavity to form the vaporization cavity therebetween;
[0015] The water inlet coil and the heating pipe are fixed inside the wall surface of the bottom shell.
[0016] According to the utility model, the steam outlet end of the water inlet coil extends into the concave cavity.
[0017] According to the utility model, the steam exhaust port is arranged on the cover body, and the steam exhaust port and the steam outlet end of the water inlet coil are arranged opposite to each other.
[0018] According to the utility model, a sealing ring is sandwiched between the cover body and the bottom shell.
[0019] According to the utility model, the bottom shell includes a heat transfer bottom plate and a surrounding plate surrounding the heat transfer bottom plate in the circumferential direction above the heat transfer bottom plate; the heat transfer bottom plate and the surrounding plate enclose the concave cavity;
[0020] The heating tube and the water inlet coil are arranged up and down and fixed in the heat transfer bottom plate.
[0021] According to the utility model, the bottom shell is an aluminum alloy bottom shell, and the water inlet coil and the heating tube are cast in the heat transfer bottom plate.
[0022] According to the utility model, a drainage channel communicating with the concave cavity is provided on the heat transfer bottom plate.
[0023] According to the utility model, a temperature sensor is arranged outside the heat transfer bottom plate.
[0024] The second utility model provides a cooking box, comprising the dual-mode steam generator, wherein the steam exhaust port is connected to the cooking cavity of the cooking box.
[0025] (III) Beneficial effects
[0026] The beneficial effects of the utility model are as follows: in the dual-mode steam generator and the cooking box of the utility model, the dual-mode steam generator includes two modes: an instant heating mode and a water boiling mode.
[0027] Among them, the instant heating mode is:
[0028] Water is passed into the water inlet coil from the water inlet end of the water inlet coil, and the heating tube heats the water inlet coil and the vaporization chamber through the shell: the water in the water inlet coil is heated to form steam and sent into the vaporization chamber from the steam outlet end of the water inlet coil, and the unevaporated water in the water inlet coil is sent into the vaporization chamber, and the water in the vaporization chamber is heated again to form steam, and the steam in the vaporization chamber is passed into the cooking chamber of the cooking box from the steam outlet. When in use, water is always passed into the water inlet coil and / or the vaporization chamber to avoid the heating tube from burning dry and power failure, resulting in discontinuous steam. The unevaporated water in the water inlet coil enters the vaporization chamber and is heated again to form steam, so as to ensure that steam is passed into the cooking chamber of the cooking box, and the water inlet coil is passed and heated at the same time, so that the speed of forming steam is faster.
[0029] The water boiling modes are:
[0030] Water is supplied to the water inlet end of the water inlet coil, and after a certain amount of water is supplied into the vaporization chamber through the steam outlet end of the water inlet coil, the heating tube heats the vaporization chamber through the shell, and the water in the vaporization chamber is heated and evaporated into water vapor, which is passed into the cooking chamber of the cooking box through the steam exhaust port.
[0031] In summary, this dual-mode steam generator can achieve two modes: instant heating and boiling water to meet the different needs of users.
[0032] Furthermore, during the use of the dual-mode steam generator, the instant heating mode is adopted in the initial stage, and the water inlet speed of the water inlet coil is controlled so that the water inlet coil discharges a mixture of steam and water into the vaporization chamber to quickly provide steam. After running for a period of time, a certain amount of water accumulates in the vaporization chamber, and then it is switched to the boiling water mode, and the water inlet coil is stopped. The vaporization chamber is heated by the heating tube through the shell, and the water in the vaporization chamber evaporates into water vapor to continuously supply steam. Since the dual-mode steam generator adopts a shorter instant heating mode, the substances in the water vapor in the water inlet coil are not easy to deposit on the surface of the tube body to form scale. At the same time, the dual-mode steam generator produces a mixture of steam and hot water in the water inlet coil in the initial stage of the instant heating mode. The hot water can wash away the scale brought into the water inlet coil to avoid scale blockage in the water inlet coil. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] Figure 1 It is a three-dimensional schematic diagram of a dual-mode steam generator of the utility model;
[0034] Figure 2 for Figure 1 A cross-sectional view of
[0035] Figure 3 for Figure 1 Bottom view of
[0036] Figure 4 for Figure 1 Schematic diagram of the decomposition of
[0037] Figure 5 for Figure 1 A cross-sectional view of the midsole shell;
[0038] Figure 6 The figure is an exploded schematic diagram of the bottom shell;
[0039] Figure 7 Schematic diagram of the operation of a dual-mode steam generator (arrows indicate the flow direction of water or steam).
[0040] [Description of Reference Numerals]
[0041] 1: Shell; 11: Cover; 111: Steam exhaust port; 12: Bottom shell; 120: Concave cavity; 121: Heat transfer bottom plate; 122: Enclosure; 123: Drainage channel; 13: Sealing ring; 14: Temperature sensor;
[0042] 2: Heating tube;
[0043] 3: water inlet coil; 30: water flow channel; 31: water inlet end; 32: steam outlet end. DETAILED DESCRIPTION
[0044] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific implementation methods. Figure 2 The orientation is used as a reference.
[0045] Example 1
[0046] See also Figure 1-7 The dual-mode steam generator of the utility model comprises a shell 1, a water inlet coil 3 and a heating tube 2.
[0047] The shell 1 has a vaporization chamber, and a steam exhaust port 111 connected to the vaporization chamber is provided on the shell 1. The water inlet coil 3 is fixed inside the wall of the shell 1, the water inlet end 31 of the water inlet coil 3 is connected to the outside of the shell 1, and the steam outlet end 32 of the water inlet coil 3 is connected to the vaporization chamber 10. The heating tube 2 is fixed inside the wall of the shell 1, and the heating tube 2 heats the water inlet coil 3 and the vaporization chamber 10 through the shell 1, and the steam outlet end 32 of the water inlet coil 3 sends steam and water into the vaporization chamber 10.
[0048] The dual-mode steam generator includes two modes: instant heating mode and water boiling mode.
[0049] Among them, the instant heating mode is:
[0050] Water is passed into the water inlet coil 3 from the water inlet end 31 of the water inlet coil 3, and the heating tube 2 heats the water inlet coil 3 and the vaporization chamber 10 through the housing 1: the water in the water inlet coil 3 is heated to form steam and sent into the vaporization chamber 10 from the steam outlet end 32 of the water inlet coil 3, and the unevaporated water in the water inlet coil 3 is sent into the vaporization chamber 10, and the water in the vaporization chamber 10 is heated again to form steam, and the steam in the vaporization chamber 10 is passed into the cooking chamber of the cooking box from the steam outlet 111. When in use, water is always passed into the water inlet coil 3 and / or the vaporization chamber 10 to avoid the heating tube 2 from burning dry and causing discontinuous steam. The steam discharged from the water inlet coil 3 and the unevaporated water in the water inlet coil 3 enter the vaporization chamber 10 and are heated again to form steam and then discharged from the steam outlet 111, so that steam is continuously passed into the cooking chamber of the cooking box, and the speed of forming steam is relatively fast.
[0051] The water boiling modes are:
[0052] Water is supplied to the water inlet end 31 of the water inlet coil 3. After a certain amount of water is supplied into the vaporization chamber 10 through the steam outlet end 32 of the water inlet coil 3, the heating tube 2 heats the vaporization chamber 10 through the shell 1. The water in the vaporization chamber 10 is heated and evaporated into water vapor, and the water vapor is passed into the cooking chamber of the cooking box through the steam exhaust port 111.
[0053] In summary, the dual-mode steam generator can realize two modes, namely, instant heating mode and water boiling mode, to meet the different needs of users.
[0054] Furthermore, during the use of the dual-mode steam generator, the instant heating mode is adopted in the initial stage, and the water inlet speed of the water inlet coil 3 is controlled so that the water inlet coil 3 discharges a mixture of steam and water into the vaporization chamber 10 to quickly provide steam. After running for a period of time, a certain amount of water accumulates in the vaporization chamber 10. Subsequently, the water is switched to the boiling mode, and the water inlet to the water inlet coil 3 is stopped. The heating tube 2 heats the vaporization chamber 10 through the shell 1, and the water in the vaporization chamber 10 evaporates into water vapor to continuously supply steam. Since the dual-mode steam generator adopts a shorter instant heating mode, the substances in the water vapor in the water inlet coil 3 are not easy to be deposited on the surface of the tube body to form scale. At the same time, the dual-mode steam generator produces a mixture of steam and hot water in the water inlet coil 3 in the initial stage of the instant heating mode. The hot water can wash the scale brought into the water inlet coil 3 to avoid scale blockage in the water inlet coil 3.
[0055] Preferably, the heating tube 2 is an electric heating tube.
[0056] Specifically, the water inlet coil 3 has a hollow water flow channel 30 , and the water inlet end 3131 of the water inlet coil 3 protrudes from the housing 1 .
[0057] Furthermore, the housing 1 includes a bottom shell 12 and a cover body 11 .
[0058] The bottom shell 12 has a concave cavity 120 with an opening facing upward, and the cover body 11 is disposed on the concave cavity 120 to form a vaporization cavity 10 therebetween. The water inlet coil 3 and the heating tube 2 are fixed inside the wall of the bottom shell 12.
[0059] The concave cavity 120 is used to accommodate the unevaporated water discharged from the steam outlet end 32 of the water inlet coil 3. The heating pipe 2 arranged inside the wall of the bottom shell 12 can heat the vaporization cavity 10 through the shell 1 to evaporate the water into steam.
[0060] Specifically, the steam outlet end 32 of the water inlet coil 3 extends into the concave cavity 120 to facilitate the discharge of steam and water into the concave cavity 120 .
[0061] Specifically, the cover body 11 is provided with a steam exhaust port 111 , which is arranged opposite to the steam outlet end 32 of the water inlet coil 3 , so that the steam exhausted from the steam outlet end 32 of the water inlet coil 3 can be discharged through the steam exhaust port 111 .
[0062] Specifically, a seal 13 for sealing a gap between the cover 11 and the bottom shell 12 is sandwiched between the cover 11 and the bottom shell 12. Preferably, the cover 11 and the bottom shell 12 are connected by screws.
[0063] Furthermore, the bottom shell 12 includes a heat transfer bottom plate 121 and a surrounding plate 122 surrounding the heat transfer bottom plate 121 in the circumferential direction above, and the heat transfer bottom plate 121 and the surrounding plate 122 enclose a concave cavity 120. The heating tube 2 and the water inlet coil 3 are arranged up and down and fixed in the heat transfer bottom plate 121 to reduce the volume of the device. The heating tube 2 heats the heat transfer bottom plate 121, and the heat transfer bottom plate 121 heats the water inlet coil 3 and the vaporization cavity 10.
[0064] Preferably, the cover 11 is detachably connected to the top of the heat transfer bottom plate 121 by screws. A seal 13 is sandwiched between the cover 11 and the heat transfer bottom plate 121.
[0065] Specifically, the bottom shell 12 is an aluminum alloy bottom shell, and the water inlet coil 3 and the heating tube 2 are cast in the heat transfer bottom plate 121 to facilitate processing and facilitate heat transfer of the heat transfer bottom plate 121 .
[0066] Specifically, the heat transfer bottom plate 121 is provided with a drainage channel 123 which is in communication with the cavity 120. Excess water in the cavity 120 is drained through the drainage channel 123. Preferably, the drainage channel 123 is vertically arranged and extends to the bottom of the heat transfer bottom plate 121 for easy drainage.
[0067] When in use, the dual-mode steam generator generates a mixture of steam and hot water in the initial stage of the instant heating mode, and the hot water can wash the scale in the water inlet coil 3 into the vaporization chamber 10. After use, the drainage channel 123 at the bottom of the bottom shell 12 washes away the scale when discharging waste water, thereby avoiding scale blockage in the water inlet coil 3. The existing instant heating steam generator outputs pure steam, which cannot take away the scale in the pipeline.
[0068] Preferably, a temperature sensor 14 for monitoring the temperature of the heat transfer bottom plate 121 is disposed outside the heat transfer bottom plate 121 to improve the accuracy of use. More preferably, the temperature sensor 14 is located at the outer bottom of the heat transfer bottom plate 121 .
[0069] Example 2
[0070] This embodiment further provides a cooking box based on the dual-mode steam generator of Embodiment 1. The steam exhaust port 111 in the dual-mode steam generator is connected to the cooking cavity of the cooking box to supply steam into the cooking cavity.
[0071] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.
[0072] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A dual-mode steam generator, characterized in that: It comprises a housing (1), a water inlet coil (3) and a heating tube (2); The shell (1) has a vaporization chamber (10), and a steam exhaust port (111) communicating with the vaporization chamber (10) is provided on the shell (1); The water inlet coil (3) is fixed inside the wall of the shell (1), the water inlet end (31) of the water inlet coil (3) is connected to the outside of the shell (1), and the steam outlet end (32) of the water inlet coil (3) is connected to the vaporization chamber (10); The heating tube (2) is fixed inside the wall of the shell (1), and the heating tube (2) heats the water inlet coil (3) and the vaporization chamber (10) through the shell (1), and the steam outlet end (32) of the water inlet coil (3) delivers steam and water into the vaporization chamber (10).
2. The dual-mode steam generator according to claim 1, characterized in that: The housing (1) comprises a bottom housing (12) and a cover body (11); The bottom shell (12) has a concave cavity (120) with an opening facing upward, and the cover body (11) is disposed on the concave cavity (120) to form the vaporization cavity (10) therebetween; The water inlet coil (3) and the heating tube (2) are fixed inside the wall surface of the bottom shell (12).
3. The dual-mode steam generator according to claim 2, characterized in that: The steam outlet end (32) of the water inlet coil (3) extends into the concave cavity (120).
4. The dual-mode steam generator according to claim 3, characterized in that: The steam exhaust port (111) is arranged on the cover body, and the steam exhaust port (111) and the steam outlet end (32) of the water inlet coil (3) are arranged opposite to each other.
5. The dual-mode steam generator according to claim 2, characterized in that: A sealing ring (13) is sandwiched between the cover body and the bottom shell (12).
6. The dual-mode steam generator according to claim 2, characterized in that: The bottom shell (12) comprises a heat transfer bottom plate (121) and a surrounding plate (122) surrounding the heat transfer bottom plate (121) in a circumferential direction above the bottom plate; the heat transfer bottom plate (121) and the surrounding plate (122) enclose the concave cavity (120); The heating tube (2) and the water inlet coil (3) are arranged vertically and fixed inside the heat transfer bottom plate (121).
7. The dual-mode steam generator according to claim 6, characterized in that: The bottom shell (12) is an aluminum alloy bottom shell, and the water inlet coil (3) and the heating tube (2) are cast in the heat transfer bottom plate (121).
8. The dual-mode steam generator according to claim 6, characterized in that: The heat transfer bottom plate (121) is provided with a drainage channel (123) which is in communication with the concave cavity (120).
9. The dual-mode steam generator according to claim 6, characterized in that: A temperature sensor (14) is arranged outside the heat transfer bottom plate (121).
10. A cooking box, characterized in that: It comprises the dual-mode steam generator according to any one of claims 1 to 9, wherein the steam exhaust port (111) is connected to the cooking cavity of the cooking box.