A new type of PTC steam generator

Abstract

This invention provides a novel PTC steam generator, comprising a PTC heating core. The end of the PTC heating core furthest from the outlet is connected to a flow channel frame. After connection, the PTC heating core is installed inside a housing. A sealing ring is installed at the outlet end of the housing, followed by a sealing device. The housing has a liquid inlet and a gas outlet. The flow channel frame has spiral flow channel ribs centered on the PTC heating core. These ribs, along with the outer surface of the PTC heating core and the inner surface of the housing, form a spiral liquid flow channel, ensuring sufficient contact between the liquid and the PTC heating core to generate gas. Compared to existing technologies, the advantages of this invention are: the spiral flow channel ribs centered on the PTC heating core maximize the utilization of the PTC heating core's surface to create a liquid flow channel, ensuring sufficient contact between the liquid and the heat source PTC heating core to generate gas, thus improving product performance.

Description

Technical Field

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

[0002] This invention relates to a novel 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 washing and ironing products. However, existing evaporators still commonly suffer from insufficient steam generation in practical applications. The main reason is that during operation, due to gravity or limitations in the flow channel design, the liquid distribution is uneven, and some liquid cannot fully contact the heater surface, remaining liquid at the outlet, commonly resulting in dripping. This directly affects the steam generation efficiency of the evaporator.

[0005] Therefore, existing evaporator technology has obvious shortcomings in terms of sufficient steam generation, and there is an urgent need for a new technical solution to solve the problem of insufficient steam generation in evaporators, so as to improve the performance and application effect of evaporators and meet the growing needs of various industries. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides a novel PTC steam generator, aiming to improve product performance. This utility model offers the following technical solution:

[0007] A novel PTC steam generator includes a PTC heating core. The end of the PTC heating core furthest from the outlet is connected to a flow channel frame. After the PTC heating core is connected to the flow channel frame, it is installed inside a housing. A sealing ring is installed at the outlet end of the housing, and a sealing device is provided. The housing has a liquid inlet and a gas outlet. The flow channel frame has spiral flow channel ribs centered on the PTC heating core. The flow channel ribs, the outer surface of the PTC heating core, and the inner surface of the housing form a spiral liquid flow channel to ensure that the liquid fully contacts the PTC heating core and generates gas.

[0008] Furthermore, the flow channel frame has a central cavity to accommodate the PTC heating core. The inner wall of the central cavity is in contact with the outer surface of the PTC heating core, and both sides of the inner wall of the central cavity are provided with protrusions. Their structure matches the groove structure on the outer surface of the PTC heating core, ensuring that the PTC heating core is centered in the central cavity and preventing it from being biased to one side, thus avoiding the problem of poor fluid flow caused by different cross-sections of the liquid flow channel.

[0009] Furthermore, the flow channel ribs on the upper plane of the flow channel frame are inclined ribs, which together with the upper plane of the PTC heating core and the upper wall of the inner surface of the outer shell form a flow channel, which is an outlet channel for liquids or gases. The flow channel ribs on the lower plane of the flow channel frame are rectangular ribs, which together with the lower plane of the PTC heating core and the lower wall of the inner surface of the outer shell form a flow channel, which is an inlet channel for liquids or gases.

[0010] Furthermore, in order to monitor the temperature at the outlet and prevent it from getting too high, a temperature sensing block is installed near the outlet flow channel in the flow channel frame. The actual temperature inside the flow channel is transmitted to the temperature controller installed on the temperature sensing block. When the temperature exceeds the preset threshold of the temperature controller, the temperature controller turns on and disconnects the circuit to prevent the risk of explosion caused by excessive internal air pressure due to excessive temperature.

[0011] Furthermore, the flow channel frame and PTC heating core can be integrally injection molded to simplify the assembly process and reduce the production cost of the product.

[0012] Furthermore, both the flow channel frame and the outer shell are made of high-temperature resistant plastic materials.

[0013] Compared with the prior art, the beneficial effects of this utility model are: a spiral flow channel rib is set with the PTC heating core as the center, and the surface of the PTC heating core is set with liquid flow channels to maximize the utilization of the PTC heating core, so that the liquid can fully contact the heat source PTC heating core and generate gas, and the product is fully vaporized. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is a schematic diagram of a new type of PTC steam generator.

[0016] Figure 2 This is a schematic diagram of an explosion of a new type of PTC steam generator.

[0017] Figure 3 This is a schematic diagram of the upper and lower planes of the flow channel frame.

[0018] Figure 4 This is a schematic diagram of a spiral flow channel.

[0019] 1—PTC heating element;

[0020] 2—Flow channel frame; 21—Flow channel rib; 211—Inclined rib; 212—Rectangular rib; 22—Intermediate cavity; 221—Boss; 222—Right side wall; 222—Left side wall;

[0021] 3-Outer shell; 31-Liquid inlet; 32-Gas outlet;

[0022] 4—Sealing ring;

[0023] 5—Sealing device;

[0024] 61—Temperature sensor block; 62—Thermostat; Detailed Implementation

[0025] 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.

[0026] 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.

[0027] The design will be further explained below with reference to the accompanying drawings in the structural specification.

[0028] like Figure 2 A novel PTC steam generator includes a PTC heating core 1. The end of the PTC heating core 1 furthest from the outlet is connected to a flow channel frame 2. After the PTC heating core 1 is connected to the flow channel frame 2, it is installed inside a housing 3. A sealing ring 4 is installed at the outlet end of the housing 3, and a sealing device 5 is provided. The housing 3 is provided with a liquid inlet 31 and a gas outlet 32. The characteristic feature is that the flow channel frame 2 is provided with a spiral flow channel rib 21 centered on the PTC heating core 1. The flow channel rib 21 forms a spiral liquid flow channel with the outer surface of the PTC heating core 1 and the inner surface of the housing 3, so that the liquid can fully contact the PTC heating core and generate gas.

[0029] The manufacturing process of the PTC heating core 1 described above is existing technology and will not be repeated here.

[0030] like Figure 3The flow channel frame 2 has a central cavity 22 to accommodate the PTC heating core 1. The inner wall of the central cavity 22 is in contact with the outer surface of the PTC heating core, and the inner wall of the central cavity 22 has a boss 221. Its structure matches the groove structure on the outer surface of the PTC heating core, ensuring that the PTC heating core 1 is in the center of the central cavity 22, preventing it from being biased to one side, thus avoiding the problem of poor fluid flow caused by different cross-sections of the liquid flow channel.

[0031] like Figure 3 The flow channel ribs 21 on the upper plane of the flow channel frame 2 are inclined ribs 211. The inclined ribs 211, together with the upper plane of the PTC heating core and the upper wall of the inner surface of the outer shell, form a flow channel, which is the outflow channel for liquids or gases. The flow channel ribs 21 on the lower plane of the flow channel frame 2 are rectangular ribs 212. The rectangular ribs 212, together with the lower plane of the PTC heating core and the lower wall of the inner surface of the outer shell 3, form a flow channel, which is the inflow channel for liquids or gases.

[0032] like Figures 3-4 The flow direction of the liquid in the chamber is described as follows: the liquid first flows into the right side wall 222 of the flow channel frame from the liquid inlet 31 of the outer shell 3, and then enters the rectangular channel on the lower plane. After that, it flows up through the left side wall 223 of the flow channel frame 2 and enters the inclined channel on the upper plane. Then it flows into the next rectangular channel through the right side wall of the next flow channel frame. The liquid will be further heated and generate steam as it passes through each channel.

[0033] like Figure 2 Furthermore, in order to monitor the temperature at the outlet and prevent the temperature from getting too high, a temperature sensing block 61 is set near the outlet flow channel of the flow channel frame 2 to transmit the actual temperature in the flow channel inside the cavity to the temperature controller 62 installed on the temperature sensing block 61. When the temperature exceeds the preset threshold of the temperature controller 62, the temperature controller turns on and disconnects the circuit to prevent the risk of explosion caused by excessive internal air pressure due to excessive temperature.

[0034] Furthermore, the flow channel frame 2 and the PTC heating core 1 can be integrally injection molded to simplify the assembly process and reduce the production cost of the product.

[0035] Furthermore, both the flow channel frame 2 and the outer shell 3 are made of high-temperature resistant plastic materials.

[0036] 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 novel PTC steam generator, comprising a PTC heating core (1), the end of the PTC heating core (1) away from the outlet wire being connected to a flow channel frame (2), the PTC heating core (1) being connected to the flow channel frame (2) and then installed inside a housing (3), a sealing ring (4) being installed at the outlet end of the housing (3) and a sealing device (5) being provided, the housing (3) being provided with a liquid inlet (31) and a gas outlet (32), characterized in that: The flow channel frame (2) is provided with a spiral flow channel rib (21) centered on the PTC heating core (1). The flow channel rib (21) forms a spiral liquid flow channel with the outer surface of the PTC heating core (1) and the inner surface of the outer shell (3) so that the liquid can fully contact the PTC heating core (1).

2. The novel PTC steam generator according to claim 1, characterized in that: The flow channel frame (2) has a central cavity (22) to accommodate the PTC heating core (1). The inner wall of the central cavity (22) is in contact with the outer surface of the PTC heating core, and both sides of the inner wall of the central cavity (22) are provided with bosses (221). The bosses (221) are matched with the groove structure on the outer surface of the PTC heating core (1).

3. A novel PTC steam generator according to claim 2, characterized in that: The flow channel ribs (21) provided on the upper plane of the flow channel frame (2) are inclined ribs (211). The inclined ribs (211) form a flow channel with the upper plane of the PTC heating core (1) and the upper wall of the inner surface of the outer shell (3). This flow channel is the outflow channel for liquid or gas. The flow channel ribs (21) provided on the lower plane of the flow channel frame (2) are rectangular ribs (212). The rectangular ribs (212) form a flow channel with the lower plane of the PTC heating core (1) and the lower wall of the inner surface of the outer shell (3). This flow channel is the inflow channel for liquid or gas.

4. A novel PTC steam generator according to claim 3, characterized in that: A temperature sensing block (61) is set near the outlet flow channel of the flow channel frame (2) to transmit the actual temperature in the flow channel to the temperature controller (62) installed on the temperature sensing block (61). When the temperature exceeds the preset threshold of the temperature controller (62), the temperature controller (62) opens and disconnects the circuit.

5. A novel PTC steam generator according to claim 1, characterized in that: The flow channel frame (2) and the PTC heating core (1) can be integrally molded by injection molding.

6. A novel PTC steam generator according to any one of claims 1 to 5, characterized in that: The flow channel frame (2) and the outer shell (3) are both made of high-temperature resistant plastic injection molding.

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