PTC (Positive Temperature Coefficient) steam generator

Abstract

The utility model provides a PTC (Positive Temperature Coefficient) steam generator which comprises a shell with an opening in the upper end, a PTC heating core is arranged at the upper end of the shell, the shell is fixedly connected with two same side edges of the PTC heating core through clamping jaws, a water inlet and an air outlet are formed in the outer side edge of the shell, and one end of the PTC heating core is connected with a power cable. Compared with the prior art, the PTC heater has the advantages that the PTC heater is compact in structure, the tube body of the PTC heating core serves as a cover plate of the cavity of the shell, miniaturization design is facilitated, the water baffle is additionally arranged in the cavity, liquid is effectively prevented from flowing out, and the PTC heater is convenient to use. Meanwhile, cavitation is prevented, the design that the PTC heating element is connected with the temperature controller in series is adopted, and safety and reliability are achieved.

Description

Technical Field

[0001] This utility model relates to the field of physics, and more particularly to heating devices, specifically a PTC steam generator. Background Technology

[0002] This invention relates to a PTC steam generator.

[0003] PTC heaters are widely used in various projects that require heating due to their constant temperature self-regulation and resistance to dry burning.

[0004] Besides heating air or liquids, PTC heaters can also be used in household appliances that require high-temperature sterilization, such as humidifiers, robot vacuums, steam mops, and laundry and ironing products. However, most of these products currently use traditional heating wires, heating tubes, or electromagnetic steam generators, which often have drawbacks such as large size, slow heating speed, and uncontrollable temperature. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a PTC steam generator, aiming to improve product performance. This utility model offers the following technical solution:

[0006] A PTC steam generator includes a housing with an open top. A PTC heating element is disposed on the upper end of the housing. The housing and the two sides of the PTC heating element are fixedly connected by claws. A water inlet and an air outlet are disposed on the outer side of the housing. One end of the PTC heating element is connected to a power cable. After being powered on, the PTC heating element rapidly heats the liquid inside the housing, and the liquid is converted into gas and flows out from the air outlet.

[0007] Furthermore, a baffle plate A is provided near the water inlet in the housing cavity, a baffle plate B is provided at the air outlet, and a raised rib is provided in the middle of the cavity. This effectively prevents water from flowing out of the outlet quickly after entering from the inlet, ensuring that the liquid fully contacts the surface of the PTC heater to generate gas and also preventing cavitation.

[0008] Furthermore, a baffle plate C is provided on the upper part of the raised rib near the inlet and outlet to prevent water that has just entered from the inlet from flowing directly out of the outlet through the raised rib.

[0009] Furthermore, the raised ribs form a cavity with the outer side of the cavity and the outer side of the bottom end of the shell, and a temperature controller can be installed in the cavity.

[0010] Furthermore, grooves are provided on the four side walls at the upper end of the shell, and a sealing ring is installed in the grooves to ensure good sealing of the cavity formed by the shell and the PTC heating core tube.

[0011] Furthermore, the PTC heater core includes a PTC heating core tube inclined surface on both sides of the upper end of the tube body, which mates with the upper bend of the claw. A PTC heating core tube flat surface is provided on both sides of the lower end of the tube body, which mates with the upper end surface of the shell. The lower flat surface of the PTC heating core tube body serves as a cover plate for the shell cavity, forming a closed cavity with the shell.

[0012] Furthermore, inclined surfaces are provided on both sides of the bottom surface of the housing, which cooperate with the bent part at the bottom of the claw.

[0013] Furthermore, the tube body and claws of the PTC heating core can be integrally formed from aluminum profiles.

[0014] Furthermore, baffle A and baffle B together form an "S"-shaped flow channel.

[0015] Furthermore, the outer shell is injection molded from high-temperature resistant plastic material.

[0016] Compared with the prior art, the advantages of this utility model are: compact structure, the tube of the PTC heating element also serves as the cover plate of the shell chamber, which is conducive to miniaturization design, the addition of a baffle plate in the chamber effectively prevents liquid outflow and insufficient vaporization, and also prevents cavitation, and adopts a design of PTC heating element in series with a temperature controller, which is safe and reliable. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a PTC steam generator according to the second embodiment.

[0019] Figure 2 This is a schematic diagram of an explosion of a PTC steam generator according to the first embodiment.

[0020] Figure 3 This is a schematic diagram of a PTC vapor generator shell according to the first embodiment.

[0021] Figure 4 This is a schematic diagram of the tube body of a PTC vapor generator and PTC heating core according to the first embodiment.

[0022] Figure 5 This is a schematic cross-sectional view of a PTC steam generator according to the first embodiment.

[0023] Figure 6 This is a schematic cross-sectional view of a PTC steam generator according to the second embodiment.

[0024] Figure 7 This is a schematic diagram of the PTC vapor generator shell and flow channel according to the second embodiment.

[0025] 1—Shell; 11—Water inlet; 12—Air outlet; 13—Water baffle A; 14—Water baffle B; 15—Protruding rib; 151—Water baffle C; 16—First steam generation zone; 17—Second steam generation zone; 18—Shell inclined surface; 19—Cavity; 20—Groove; 2—PTC heating core; 21—PTC heating core tube inclined surface; 22—PTC heating core tube flat surface; 3—Claw; 4—Power cable; 5—Thermostat; 6—Sealing ring; Detailed Implementation

[0026] Exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0027] It should be understood that the terms "inner", "outer", "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] The design will be further explained below with reference to the accompanying drawings in the structural specification.

[0029] like Figures 1-2 A PTC steam generator includes a housing 1 with an open top, a PTC heating core 2 at the top of the housing, and the housing 1 and the two sides of the PTC heating core 2 are fixedly connected by claws 3. A water inlet 11 and an air outlet 12 are provided on the outer side of the housing. One end of the PTC heating core 1 is connected to a power cable 4. After being powered on, the PTC heating core 2 rapidly heats the liquid in the housing 1, and the liquid is converted into gas and flows out from the air outlet 12.

[0030] Example 1

[0031] A baffle plate A13 is installed in the cavity of the aforementioned shell 1 near the water inlet 11 to prevent the incoming water from directly rushing into the rear of the opposite cavity due to pressure, thus preventing it from fully contacting the surface of the PTC heater 2 and causing insufficient vaporization. The baffle plate A13 effectively prolongs the time for the water to flow into the cavity and also prevents cavitation, allowing the liquid to fully contact the surface of the PTC heater 2 and generate vaporization. Similarly, a baffle plate B14 is installed at the air outlet to prevent unvaporized liquid from flowing directly out of the air outlet 12. A raised rib 15 is installed in the middle of the cavity, which divides the cavity into two areas: a first steam generation zone 16 and a second steam generation zone 17. At the same time, a baffle plate C151 is installed on the upper part of the raised rib 15 near the inlet and outlet to prevent water that has just entered from the water inlet 11 from directly passing through the raised rib 15 and flowing out of the air outlet 12.

[0032] Meanwhile, the aforementioned protruding ribs 15 form a chamber 19 with the outer side of the cavity and the outer side of the bottom of the shell. A temperature controller 5 is installed in the chamber 19. The temperature controller 5 is connected in series with the PTC heating core 2. When the temperature controller 5 senses that the temperature is too high, it disconnects the circuit and the PTC heating core 2 stops heating, thereby improving the safety and reliability of the product.

[0033] Furthermore, a groove 20 is provided on the four sides of the upper end of the shell 1, and a sealing ring 6 is provided in the groove 20 to ensure good sealing of the cavity formed by the shell 1 and the PTC heating core 2 tube.

[0034] Furthermore, the PTC heating core is existing technology and will not be described in detail here. The difference between the PTC heating core of this solution and the existing technology is that the upper end of the tube body of the PTC heater core is provided with a PTC heating core tube inclined surface 21 on both sides. The PTC heating core tube inclined surface 21 cooperates with the upper part of the claw 3. The lower end of the tube body is provided with a PTC heating core tube flat surface 22 on both sides, which cooperates with the upper end surface of the shell 1. The lower flat surface of the PTC heating core 1 tube body serves as the cover plate of the shell cavity and forms a closed cavity with the shell 1.

[0035] Furthermore, inclined surfaces 18 are provided on both sides of the bottom surface of the housing. These inclined surfaces cooperate with the bent part at the bottom of the claw 3, so that the claw can fix and clamp the PTC heating core 2 and the housing 1.

[0036] Further optimization is that the tube body and the claw of the PTC heating core 1 can be integrally formed from aluminum profiles.

[0037] Further optimization involves using high-temperature resistant silicone for the sealing ring 6.

[0038] Example 2

[0039] The difference between Example 2 and Example 1 is that the shell 1 is different, and the baffles A13 and B14 are different in form. The two baffles form an "S" shaped flow channel, which is conducive to the water flow fully contacting the heating plate and making the water fully vaporized.

[0040] Further optimization, the shell 1 is injection molded from high-temperature resistant plastic material.

[0041] The embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles of the embodiments, their practical application, or improvements to the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A PTC steam generator, characterized in that: It includes a housing (1) with an opening at the top, and a PTC heating core (2) is provided at the top of the housing. The housing (1) and the two sides of the PTC heating core (2) are fixedly connected by claws (3). A water inlet (11) and an air outlet (12) are provided on the outer side of the housing. One end of the PTC heating core (2) is connected to a power cable (4). After being powered on, the PTC heating core (2) rapidly heats the liquid in the housing (1), and the liquid is converted into gas and flows out from the air outlet (12).

2. A PTC steam generator according to claim 1, characterized in that: A baffle plate A (13) is provided in the cavity of the shell (1) near the water inlet (11), a baffle plate B (14) is provided at the air outlet (12), and a protruding rib (15) is provided in the middle part of the cavity.

3. A PTC steam generator according to claim 2, characterized in that: A baffle plate C (151) is installed on the upper part of the raised rib (15) near the inlet and outlet to prevent water that has just entered from the inlet (11) from flowing out from the outlet (12) directly through the raised rib (15).

4. A PTC steam generator according to claim 3, characterized in that: The raised rib (15) forms a chamber (19) with the outside of the chamber and the outside of the bottom of the shell. A temperature controller (5) is installed in the chamber (19).

5. A PTC steam generator according to claim 4, characterized in that: A groove (20) is provided on the four sides of the upper end of the shell (1), and a sealing ring (6) is provided in the groove (20).

6. A PTC steam generator according to claim 5, characterized in that: The PTC heating core (2) includes a PTC heating core tube inclined surface (21) on both sides of the upper end of the tube body. The PTC heating core tube inclined surface (21) is matched with the upper bend of the claw (3). A PTC heating core tube flat surface (22) is set on both sides of the lower end of the tube body, which is matched with the upper end surface of the shell (1). The lower surface of the PTC heating core (2) tube body serves as the cover plate of the shell cavity and forms a closed cavity with the shell (1).

7. A PTC steam generator according to claim 6, characterized in that: The bottom surface of the housing is provided with inclined surfaces (18) on both sides, which are matched with the bottom bend of the claw (3).

8. A PTC steam generator according to claim 1, characterized in that: The tube body and claws of the PTC heating core (2) can be integrally formed from aluminum profiles.

9. A PTC steam generator according to claim 7, characterized in that: Water baffle A (13) and water baffle B (14) together form an "S" shape.

10. A PTC steam generator according to any one of claims 1 to 9, characterized in that: The shell (1) is injection molded from high temperature resistant plastic material.

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