Two-channel steam generator

Abstract

The utility model relates to the technical field of steam generators, in particular to a double-channel steam generator which comprises an evaporation box, a first heat transfer plate, a first electric heating tube and a first overflowing tube. The evaporation box is arranged at the top end of the first heat transfer plate; the first electric heating tube is arranged at the bottom end of the first heat transfer plate; the first overflowing pipe is attached to the first electric heating pipe; the first electric heating pipe can heat fluid in the evaporation box and the first overflowing pipe. According to the dual-channel steam, a traditional steam generator and a water flow heater are integrated, a first overflowing pipe is additionally arranged on the steam generator, and the first overflowing pipe heats fluid in the pipe by means of heat generated by a first electric heating pipe of the steam generator; the steam generator and the water heater can be integrated by additionally arranging the first overflowing pipe of the water heater on the steam generator, heating equipment of the water heater does not need to be arranged, the structure of the integrated stove is simplified, integration is high, and the manufacturing cost and the occupied space of the integrated stove are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steam generators, in particular to a double-path steam generator. Background Art

[0002] Steam generators are often integrated into integrated stoves to provide steam for cooking in electric steamers, steam-bake combos and other cooking boxes. Steam generators are mechanical devices that use the heat energy of fuel or other energy sources to heat water into steam. The steam generator can be equipped with electric heating tubes to convert electrical energy into thermal energy, which is then introduced into the evaporation box through the heat conduction plate, so that the fluid in the evaporation box is heated and vaporized to form water vapor.

[0003] For existing integrated stoves, when it is necessary to simultaneously provide the cooking box with steam required for cooking and the range hood with hot water required for cleaning, two heating systems, a steam generator and a water flow heater, are often configured separately. However, the integration of the steam generator and the water flow heater is poor, which makes the structure of the integrated stove more complicated, the manufacturing cost of the integrated stove is higher, and it occupies a larger space. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a dual-path steam generator, which solves the technical problem of poor integration of the steam generator and the water flow heater of the existing integrated stove.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned object, the double-pass steam generator of the utility model comprises an evaporation box, a first heat transfer plate, a first electric heating tube and a first flow tube;

[0008] The evaporation box is arranged at the top end of the first heat transfer plate; the first electric heating tube is arranged at the bottom end of the first heat transfer plate;

[0009] The first flow tube is arranged in close contact with the first electric heating tube; the first electric heating tube can heat the fluid in the evaporation box and the first flow tube.

[0010] Optionally, the first flow tube is fixed on the first heat transfer plate.

[0011] Optionally, the dual-pass steam generator further includes a second flow pipe;

[0012] The second flow tube is arranged on a side of the first electric heating tube away from the first heat transfer plate.

[0013] Optionally, the first flow tube is fixed to a side of the first electric heating tube away from the first heat transfer plate.

[0014] Optionally, the dual-pass steam generator further includes a second electric heating tube and a second flow tube;

[0015] The second electric heating tube is arranged at the bottom end of the first heat transfer plate;

[0016] The second flow tube is arranged on a side of the second electric heating tube away from the first heat transfer plate.

[0017] Optionally, the first electric heating tube, the first flow tube, the second electric heating tube and the second flow tube are linear or U-shaped.

[0018] Optionally, the dual-pass steam generator further includes a second electric heating tube;

[0019] The first electric heating tube and the second electric heating tube are U-shaped and are arranged at the bottom end of the first heat transfer plate;

[0020] The first flow tube is a coil, and the first flow tube includes a first U-shaped tube and a second U-shaped tube that are connected; the first electric heating tube is arranged between the inner wall of the first U-shaped tube and the outer wall of the second U-shaped tube; the second electric heating tube is in contact with the inner wall of the second U-shaped tube.

[0021] Optionally, the dual-pass steam generator further comprises a second heat transfer plate;

[0022] The second heat transfer plate is arranged on a side of the first electric heating tube and the first flow tube away from the first heat transfer plate.

[0023] Optionally, the dual-path steam generator further comprises a sudden jump temperature controller and a temperature sensor;

[0024] The sudden jump thermostat and the temperature sensor are arranged on the first electric heating tube or the first heat transfer plate.

[0025] Optionally, the evaporation box is provided with a steam interface;

[0026] The first flow pipe is in communication with the steam interface.

[0027] (III) Beneficial effects

[0028] The beneficial effects of the utility model are:

[0029] The first electric heating tube and the first flow tube are integrated at the bottom end of the first heat transfer plate, and the first flow tube is arranged in close contact with the first electric heating tube, so that the heat of the first electric heating tube can be effectively transferred to the first flow tube and the evaporation box, and the heat dissipated by the first electric heating tube is fully utilized, thereby improving the heat utilization rate of the first electric heating tube and saving equipment energy consumption.

[0030] Dual-channel steam integrates the traditional steam generator and water flow heater, and adds a first flow tube to the steam generator. The first flow tube heats the fluid in the tube with the help of the heat generated by the first electric heating tube of the steam generator. That is, the integration of the two can be completed by adding the first flow tube of the water flow heater to the steam generator. There is no need to set up heating equipment for the water flow heater, which simplifies the structure of the integrated stove, has high integration, and reduces the manufacturing cost and occupied space of the integrated stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the top surface of the double-pass steam generator of Example 1;

[0032] Figure 2 It is a structural schematic diagram of the bottom surface of the double-pass steam generator of Example 1;

[0033] Figure 3 is a side sectional view of a dual-pass steam generator of Embodiment 1;

[0034] Figure 4 An exploded view of a dual-pass steam generator of Embodiment 1;

[0035] Figure 5 It is a structural schematic diagram of the bottom surface of the double-pass steam generator of Example 2;

[0036] Figure 6 is a side sectional view of a dual-pass steam generator of Example 2;

[0037] Figure 7 It is a structural schematic diagram of the bottom surface of the double-pass steam generator of Example 3;

[0038] Figure 8 is a side sectional view of a dual-pass steam generator of Embodiment 3;

[0039] Fig. 9 It is a structural schematic diagram of the bottom surface of the dual-pass steam generator of the fourth embodiment;

[0040] Fig.10 is a side sectional view of a dual-pass steam generator of Embodiment 4;

[0041] Fig.11 It is a structural schematic diagram of the bottom surface of the double-pass steam generator of Example 5;

[0042] Fig.12 This is a schematic diagram of the structure of the first flow tube of the fifth embodiment.

[0043] [Description of Reference Numerals]

[0044] 1: Evaporation box; 11: Steam interface; 12: Water inlet interface; 13: Drainage interface;

[0045] 2: first heat transfer plate;

[0046] 3: The first electric heating tube;

[0047] 4: first flow pipe; 41: U-shaped outer pipe section; 42: U-shaped inner pipe section;

[0048] 5: The second electric heating tube;

[0049] 6: The second flow tube;

[0050] 7: Sudden jump thermostat;

[0051] 8: Temperature sensor;

[0052] 9: Second heat transfer plate. DETAILED DESCRIPTION

[0053] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0054] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0055] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] See also Figure 1The utility model provides a double-path steam generator, which comprises an evaporation box 1, a first heat transfer plate 2, a first electric heating tube 3 and a first flow tube 4; the evaporation box 1 is arranged at the top end of the first heat transfer plate 2; the first electric heating tube 3 is arranged at the bottom end of the first heat transfer plate 2; the first flow tube 4 is fitted with the first electric heating tube 3; the first electric heating tube 3 can heat the fluid in the evaporation box 1 and the first flow tube 4.

[0058] Among them, the first heat transfer plate 2 is used to increase the heat transfer area between the evaporation box 1 and the first electric heating tube 3, and improve the heat transfer efficiency. The first flow tube 4 is a hollow metal tube. The first electric heating tube 3 heats the internal fluid to provide the range hood with hot water or water vapor required for cleaning; the evaporation box 1 provides the cooking box with steam required for cooking. Optionally, the structures are brazed and welded, and brazing can effectively ensure the heat transfer effect. The first heat transfer plate 2 can be produced by aluminum alloy casting or die casting. The first heat transfer plate 2, the first electric heating tube 3 and the first flow tube 4 are integrally formed. The integral forming can effectively improve the heat conduction efficiency and reduce energy consumption.

[0059] The first electric heating tube 3 and the first flow tube 4 are integrated at the bottom end of the first heat transfer plate 2, and the first flow tube 4 is arranged in close contact with the first electric heating tube 3, so that the heat of the first electric heating tube 3 can be effectively transferred to the first flow tube 4 and the evaporation box 1, and the heat dissipated by the first electric heating tube 3 is fully utilized, thereby improving the heat utilization rate of the first electric heating tube 3 and saving equipment energy consumption.

[0060] The dual-path steam integrates the traditional steam generator and the water flow heater, and adds a first flow tube 4 to the steam generator. The first flow tube 4 heats the fluid in the tube with the help of the heat generated by the first electric heating tube 3 of the steam generator. That is, the integration of the two can be completed by adding the first flow tube 4 of the water flow heater to the steam generator. There is no need to set up the heating equipment of the water flow heater, which simplifies the structure of the integrated stove, has high integration, and reduces the manufacturing cost and occupied space of the integrated stove.

[0061] Embodiment 1:

[0062] like Figures 2 to 4 As shown, the first flow tube 4 is fixed on the first heat transfer plate 2. Embodiment 1 The first heat transfer plate 2 and the first electric heating tube 3 simultaneously conduct heat to the first flow tube 4, and the contact between the structures is closer, which can make the fluid temperature in the evaporation box 1 and the first flow tube 4 tend to be consistent in a short time. Optionally, a pair of first flow tubes 4 can be provided, and the pair of first flow tubes 4 are provided on both sides of the first electric heating tube 3 in a one-to-one correspondence, so as to further increase the contact area between the structures, that is, the heat conduction area.

[0063] Embodiment 2:

[0064] See also Figure 5and Figure 6 The dual-path steam generator further includes a second flow tube 6; the second flow tube 6 is arranged on the side of the first electric heating tube 3 away from the first heat transfer plate 2. On the basis of the first embodiment, a second flow tube 6 is added at the bottom end of the first electric heating tube 3, and the second flow tube 6 is directly heated by the first electric heating tube 3. Therefore, the temperature rise rate of the fluid in the second flow tube 6 is generally faster than the temperature rise rate of the fluid in the first flow tube 4 and the evaporation box 1. The water outlet of the second flow tube 6 can be connected according to the actual needs of the integrated stove. Optionally, the first flow tube 4 and the second flow tube 6 are connected in series through an additional pipeline to enhance the heat conduction efficiency.

[0065] Embodiment three:

[0066] like Figure 7 and Figure 8 As shown, the first flow tube 4 is fixed to the side of the first electric heating tube 3 away from the first heat transfer plate 2. Since the volume of the fluid in the evaporation box 1 is generally larger than the volume of the fluid in the first flow tube 4, the temperature rise rate of the fluid in the first flow tube 4 directly heated by the first electric heating tube 3 is faster than the temperature rise rate of the fluid in the evaporation box 1 indirectly heated by the first electric heating tube 3, thereby improving the adaptability of the integrated stove to different usage requirements.

[0067] Embodiment 4:

[0068] See also Fig. 9 and Fig.10 The dual-path steam generator further includes a second electric heating tube 5 and a second flow tube 6; the second electric heating tube 5 is arranged at the bottom end of the first heat transfer plate 2; the second flow tube 6 is arranged on the side of the second electric heating tube 5 away from the first heat transfer plate 2. On the basis of the third embodiment, a second electric heating tube 5 is added at the bottom end of the first heat transfer plate 2, and a second flow tube 6 is added at the bottom end of the second electric heating tube 5. Similarly, the second electric heating tube 5 and the first flow tube 4 heat up the fluid faster than the evaporation box 1, which improves the adaptability of the dual-path steam generator to the different usage requirements of the integrated stove.

[0069] Furthermore, the first electric heating tube 3, the first flow tube 4, the second electric heating tube 5 and the second flow tube 6 are linear or U-shaped. By increasing the contact area between the electric heating tube, the flow tube and the first heat transfer plate 2, the heat conduction efficiency can be effectively improved, so that the temperature of the fluid in the flow tube and the evaporation box 1 tends to be consistent, and the fluid is heated synchronously. Of course, the electric heating tube and the flow tube can also be set in other shapes as long as the heat conduction area can be increased.

[0070] Embodiment five:

[0071] like Fig.11 and Fig.12As shown, the double-pass steam generator further includes a second electric heating tube 5; the first electric heating tube 3 and the second electric heating tube 5 are U-shaped and are arranged at the bottom end of the first heat transfer plate 2; the first flow tube 4 is a coil, and the first flow tube 4 includes a U-shaped outer tube section 41 and a U-shaped inner tube section 42 that are connected; the first electric heating tube 3 is arranged between the inner wall of the U-shaped outer tube section 41 and the outer wall of the U-shaped inner tube section 42; the second electric heating tube 5 is in contact with the inner wall of the U-shaped inner tube section 42. Specifically, on the basis of the first embodiment, a second electric heating tube 5 is added to the bottom end of the first heat transfer plate 2, and the first flow tube 4 is arranged as a coil, that is, the coil is wound around the water inlet of the first flow tube 4 as the center point in the horizontal plane, and several turns of pipes are wound between the water outlet of the first flow tube 4, forming a ring shape. Among them, in the same horizontal plane, the U-shaped outer tube section 41 and the U-shaped inner tube section 42 are arranged in the internal gap of the loop of the first flow tube 4, which further increases the contact area between the first flow tube 4 and the first electric heating tube 3 and the second electric heating tube 5, thereby achieving uniform heating of the fluid.

[0072] Secondly, the dual-pass steam generator also includes a second heat transfer plate 9; the second heat transfer plate 9 is arranged on the side of the first electric heating tube 3 and the first flow tube 4 away from the first heat transfer plate 2. The second heat transfer plate 9 can be brazed to the bottom ends of the first electric heating tube 3, the second electric heating tube 5 and the first flow tube 4 to further increase the heat transfer area and achieve uniform heating of the fluid. The second heat transfer plate 9 can be set as a flat plate body or a concave plate body. The concave plate body can make the second heat transfer plate 9 contact with the side ends of the second electric heating tube 5 and the side ends of the first flow tube 4 to increase the heat transfer area.

[0073] In addition, the dual-path steam generator further includes a sudden jump thermostat 7 and a temperature sensor 8; the sudden jump thermostat 7 and the temperature sensor 8 are arranged on the first electric heating tube 3 or the first heat transfer plate 2. The sudden jump thermostat 7 and the temperature sensor 8 can use existing equipment and control programs, the temperature sensor 8 is used to detect the fluid temperature, and the sudden jump thermostat 7 is used to improve the safety of the equipment.

[0074] Furthermore, the evaporation box 1 is provided with a steam interface 11; the first flow pipe 4 is connected to the steam interface 11. In this embodiment, the evaporation box 1 is a hollow box body made of stainless steel sheet metal, with a steam outlet interface 11 and a water inlet interface 12 connected to the inner cavity provided on the top, and a drainage interface 13 provided on the bottom. The steam interface 11, the first flow pipe 4 and the second flow pipe 6 can be drained separately, or the steam interface 11 and the first flow pipe 4 can be connected in series so that the water outlet of the first flow pipe 4 discharges water vapor.

[0075] It should be understood that the above description of the specific embodiments of the utility model is only for illustrating the technical route and features of the utility model, and its purpose is to enable those skilled in the art to understand the content of the utility model and implement it accordingly, but the utility model is not limited to the above specific implementation methods. All changes or modifications made within the scope of the claims of the utility model should be included in the protection scope of the utility model.

Claims

1. A dual-pass steam generator, characterized in that: The double-pass steam generator comprises an evaporation box (1), a first heat transfer plate (2), a first electric heating tube (3) and a first flow tube (4); The evaporation box (1) is arranged at the top end of the first heat transfer plate (2); the first electric heating tube (3) is arranged at the bottom end of the first heat transfer plate (2); The first flow tube (4) is arranged in close contact with the first electric heating tube (3); the first electric heating tube (3) is capable of heating the fluid in the evaporation box (1) and the first flow tube (4).

2. The dual-pass steam generator according to claim 1, characterized in that: The first flow tube (4) is fixed on the first heat transfer plate (2).

3. The dual-pass steam generator according to claim 2, characterized in that: The dual-path steam generator further comprises a second flow pipe (6); The second flow tube (6) is arranged on a side of the first electric heating tube (3) away from the first heat transfer plate (2).

4. The dual-pass steam generator according to claim 1, characterized in that: The first flow tube (4) is fixed to a side of the first electric heating tube (3) away from the first heat transfer plate (2).

5. The dual-pass steam generator according to claim 4, characterized in that: The dual-path steam generator further comprises a second electric heating tube (5) and a second flow tube (6); The second electric heating tube (5) is arranged at the bottom end of the first heat transfer plate (2); The second flow tube (6) is arranged on a side of the second electric heating tube (5) away from the first heat transfer plate (2).

6. The dual-pass steam generator according to claim 5, characterized in that: The first electric heating tube (3), the first flow tube (4), the second electric heating tube (5) and the second flow tube (6) are in a straight line or a U shape.

7. The dual-pass steam generator according to claim 1, characterized in that: The dual-path steam generator further comprises a second electric heating tube (5); The first electric heating tube (3) and the second electric heating tube (5) are U-shaped and are arranged at the bottom end of the first heat transfer plate (2); The first flow tube (4) is a coil, and the first flow tube (4) comprises a U-shaped outer tube section (41) and a U-shaped inner tube section (42) that are connected; the first electric heating tube (3) is arranged between the inner wall of the U-shaped outer tube section (41) and the outer wall of the U-shaped inner tube section (42); and the second electric heating tube (5) is in contact with the inner wall of the U-shaped inner tube section (42).

8. The dual-pass steam generator according to claim 7, characterized in that: The dual-pass steam generator further comprises a second heat transfer plate (9); The second heat transfer plate (9) is arranged on the side of the first electric heating tube (3) and the first flow tube (4) away from the first heat transfer plate (2).

9. The dual-pass steam generator according to claim 1, characterized in that: The dual-path steam generator further comprises a sudden jump temperature controller (7) and a temperature sensor (8); The sudden temperature controller (7) and the temperature sensor (8) are arranged on the first electric heating tube (3) or the first heat transfer plate (2).

10. The dual-pass steam generator according to claim 1, characterized in that: The evaporation box (1) is provided with a steam interface (11); The first flow pipe (4) is in communication with the steam interface (11).

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