PTC (Positive Temperature Coefficient) heating water evaporator

Abstract

The utility model discloses a PTC (Positive Temperature Coefficient) heating water evaporator which comprises a PTC heating element, a metal heat conduction shell, an evaporation chamber shell, a power line, a communicating pipe and water supply equipment, a first installation space is formed in the metal heat conduction shell, the PTC heating element is installed in the first installation space and tightly abuts against the inner wall of the metal heat conduction shell, and the PTC heating element is electrically connected with the power line; an evaporation chamber is formed in the evaporation chamber shell, the metal heat conduction shell is inserted into the evaporation chamber, and a steam outlet communicated with the evaporation chamber is formed in the upper end of the evaporation chamber shell; and the water supply equipment is communicated with the evaporation chamber through the communicating pipe. The heating time before evaporation can be effectively shortened, the evaporation duration can be prolonged, and the requirement for the evaporation capacity can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to PTC heating body technical field, especially a kind of PTC heating water evaporator. BACKGROUND

[0002] The water evaporator of the past, using heating tube is soaked in water storage tank, until the water of whole water storage tank is heated to boiling, evaporate again. In order to ensure that the evaporation time is long enough, the volume of water storage tank is increased currently, sufficient water is contained by large-volume water tank, so as to improve the evaporation time, but the heating time of water storage tank is too long before evaporation in this way, and the efficiency is low. SUMMARY

[0003] The utility model discloses a kind of PTC heating water evaporators, can effectively reduce the heating time before evaporation, and can realize the improvement evaporation long, meet the demand of evaporation amount.

[0004] To achieve the above object, the utility model provides a kind of PTC heating water evaporator, including PTC heating element, metal heat conduction shell, evaporation chamber shell, power cord, communication pipe and water supply equipment;

[0005] First installation space is formed in the metal heat conduction shell, the PTC heating element is installed in the first installation space, and is closely abutted with the inner wall of the metal heat conduction shell, the PTC heating element is electrically connected with the power cord;

[0006] Evaporation chamber is formed in the evaporation chamber shell, the metal heat conduction shell is inserted in the evaporation chamber, the upper end of the evaporation chamber shell is equipped with steam outlet communicated with evaporation chamber;

[0007] The water supply equipment is communicated with the evaporation chamber by the communication pipe.

[0008] Further, steam buffer space is provided between the steam outlet and evaporation chamber. Steam buffer space is provided, and metal heat conduction shell does not extend into steam buffer space when assembling, water surface also cannot reach steam buffer space, steam bubble is generated on the surface of metal heat conduction shell when metal heat conduction shell heats water, and water splashes are driven to rise and fall. The role of setting steam buffer space is that water splashes do not splash to steam outlet, and the steam discharged does not contain liquid water.

[0009] Further, the height of the steam buffer space is 10-100mm.

[0010] Further, the PTC heating element is a constant temperature heating ceramic element mainly made of barium titanate. The Curie temperature is selected to be 150-280 DEG C, and the PTC heating element can be dried and burned, and even if a part of the metal heat conduction shell is not immersed in water, the PTC heating element will not be burned due to high temperature.

[0011] Further, the outer surface of the metal heat conduction shell is covered with an anti-corrosion heat conduction layer made of stainless steel, titanium or other equivalent materials. The anti-corrosion heat conduction layer prevents the outer surface of the metal heat conduction shell from being corroded by water, thereby prolonging the service life of the metal heat conduction shell.

[0012] Further, the water supply device comprises a water storage tank or a city water supply pipe. The water storage tank or the city water supply pipe is used to supply water, maintain the water level in the evaporation chamber and prolong the evaporation time.

[0013] Further, the water capacity of the evaporation chamber is less than or equal to one tenth of the water storage tank. The low water capacity of the evaporation chamber can improve the heating efficiency in the evaporation chamber and reduce the waiting time.

[0014] Further, the water inlet valve is arranged on the communication pipe, and the other end of the communication pipe away from the evaporation chamber is communicated with the city water supply pipe. The water inlet valve is used to adjust the water inlet amount, which is basically equal to the evaporation water amount. If the water inlet amount is too small, a part of the metal heat conduction shell is exposed to the water surface, which reduces the power of the PTC heating element and the evaporation water amount, thereby balancing the water inlet amount and the evaporation amount.

[0015] Further, the drain pipe is communicated with the steam buffer space, and the position where the drain pipe is communicated with the steam chamber is arranged on the lower side of the steam buffer space and is adjacent to the steam chamber. The drain pipe is used to drain the splashed water. The water evaporates on the surface of the metal heat conduction shell, and the calcium and magnesium ions in the water are concentrated, thereby increasing the concentration of various ions and facilitating the formation of water scale on the surface of the metal heat conduction shell. After the drain pipe is arranged, the water with high calcium and magnesium ion concentration is splashed into the drain pipe and is drained, thereby reducing the speed of the formation of water scale on the surface of the metal heat conduction shell.

[0016] Further, the inner diameter of the drain pipe is less than one tenth of the diameter of the steam outlet. The aperture of the drain pipe is less than one tenth of the steam outlet, and the drain pipe will not affect the normal steam discharge of the steam outlet.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The utility model discloses a PTC constant temperature heating element is adopted, and the PTC constant temperature heating element can automatically adjust power, and the automatic constant temperature is when the water capacity of evaporating chamber can not completely soak heating element, and the part of not soaking water, the power rapidly drops, and maintains the heating temperature of constant and will not be burnt out, and the safe and reliable, avoids the problem of local high temperature burnt out of the water shortage.

[0019] The utility model discloses an evaporating chamber is very small, and the water capacity in evaporating chamber is equivalent to the tenth of water storage tank, also can set up below the tenth, through reducing the built-in capacity of evaporating chamber, under the same heating temperature, the heat of evaporating chamber rises faster, and it is easier to reach the temperature of evaporation, so can greatly shorten the heating waiting time before evaporation, in addition, the water of water storage tank is supplemented to evaporating chamber through connecting pipe, so that evaporating chamber has the continuous water supply, can greatly extend the total evaporation time, can start evaporation in the short time after heating, and can also continue very long evaporation time. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the embodiment or prior art description needed to use the drawing briefly introduce, obviously, the drawing in the following description is some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0021] Figure 1 It is the structure schematic diagram of the embodiment 1 of a PTC heating water evaporator of the utility model;

[0022] Figure 2 It is the structure schematic diagram of the embodiment 2 of a PTC heating water evaporator of the utility model;

[0023] Figure 3 It is the structure schematic diagram of the embodiment 3 of a PTC heating water evaporator of the utility model;

[0024] Figure 4 It is the structure schematic diagram of the embodiment 4 of a PTC heating water evaporator of the utility model.

[0025] In the drawing includes:

[0026] 1, PTC heating element;2, metal heat conduction shell;21, first installation space;3, evaporating chamber shell;31, evaporating chamber;32, steam outlet;33, steam buffer space;4, power cord;5, communication pipe;6, water supply equipment;7, water inlet valve;8, drain pipe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in this embodiment of the present invention to clearly and completely describe the technical solution in this embodiment of the present invention. Obviously, the embodiment described is only one embodiment of the present invention, not all embodiments of the present invention. Based on this embodiment of the present invention, all other embodiments of the present invention obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this utility model.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as described in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of 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.

[0030] See also Figures 1 to 4 , an embodiment of the utility model provides a PTC heating water evaporator.

[0031] Example 1

[0032] The PTC water evaporator of this embodiment is as follows: Figure 1 As shown, it includes a PTC heating element 1, a metal heat-conducting shell 2, an evaporation chamber shell 3, a power line 4, a connecting pipe 5 and a water supply device 6;

[0033] In this embodiment, a first installation space 21 is formed inside the metal heat-conducting shell 2, and the PTC heating element 1 is directly installed in the first installation space 21, and is tightly abutted against the inner wall of the metal heat-conducting shell 2. The PTC heating element 1 is electrically connected to the power cord 4. Specifically, the PTC heating element 1 in this embodiment is a constant-temperature heating ceramic element with barium titanate as the main body, and the Curie temperature is controlled at 150-280°C, thereby enabling the PTC heating element 1 to be resistant to dry burning. Even if a part of the metal heat-conducting shell 2 is not soaked in water, the PTC heating element 1 will not be burned due to high temperature. This embodiment adopts the PTC heating element as the constant-temperature heating element, and utilizes the automatic power adjustment and constant-temperature heating functions of the PTC to effectively prevent a part of the heating tube from being immersed in water, and can also work stably without being burned, thereby greatly extending the life of the heating tube and increasing the safety of the product.

[0034] The metal heat-conducting shell 2 of the embodiment is made of a metal with good heat conduction, which can be aluminum, copper, titanium, stainless steel or other metal materials with good heat conduction. The metal heat-conducting shell 2 can be a cylinder, a cuboid or other columnar bodies. In the embodiment, the metal heat-conducting shell 2 is an aluminum extruded cylindrical body. In order to increase the service life of the metal heat-conducting shell 2, the outer surface of the metal heat-conducting shell 2 is preferably covered with a corrosion-resistant heat-conducting layer. The corrosion-resistant heat-conducting layer can be made of a sleeve of stainless steel, titanium or other equivalent materials, which is fixedly wrapped around the outer surface of the metal heat-conducting shell 2. The corrosion-resistant heat-conducting layer prevents water from eroding the outer surface of the metal heat-conducting shell 2 and improves the service life thereof.

[0035] An evaporation chamber 31 is formed in the evaporation chamber shell 3. In the embodiment, the metal heat-conducting shell 2 is inserted into the evaporation chamber 31 from the bottom of the evaporation chamber 31. A sealing ring or sealing glue can be arranged at the contact position of the metal heat-conducting shell 2 and the evaporation chamber shell 3 to prevent water in the evaporation chamber 31 from flowing out. The upper end of the evaporation chamber shell 3 is provided with a steam outlet 32 that is in communication with the evaporation chamber 31.

[0036] In order to prevent water splashing from the steam outlet 32 during evaporation, a steam buffer space 33 is arranged between the steam outlet 32 and the evaporation chamber 31 in the embodiment. The steam buffer space 33 is arranged such that the metal heat-conducting shell 2 does not extend into the steam buffer space 33 and the water surface cannot reach the steam buffer space 33 during assembly. When the metal heat-conducting shell 2 heats water, steam bubbles are generated on the surface of the metal heat-conducting shell 2, which drives the water splashing up and down. The steam discharged in this way does not contain liquid water, thereby improving the quality of the steam. The height of the steam buffer space 33 can be 10-100 mm, which is specifically set according to the height of the water splashing. When the heating power is high, which leads to high water splashing, a steam buffer space 33 with a higher height is selected.

[0037] The water supply device 6 is in communication with the evaporation chamber 31 through the communication pipe 5. The water supply device 6 of the embodiment is a water storage tank. Preferably, the water capacity of the evaporation chamber 31 is less than or equal to one-tenth of the water storage tank. By arranging a low water capacity of the evaporation chamber 31, the heating efficiency in the evaporation chamber 31 can be improved and the waiting time can be reduced.

[0038] The working principle of the present invention is briefly described as follows: when the present invention is in use, the power supply is first connected through the power cord 4 to start the PTC heating element 1 for heating, and the heat is transferred to the metal heat-conducting shell 2 in real time, so that the metal heat-conducting shell 2 is heated and heated. At the same time, the outer surface of the metal heat-conducting shell 2 contacts the water in the evaporation chamber 31, and the temperature is also transferred to the water in the evaporation chamber 31 to heat the water, until the water in the evaporation chamber 31 evaporates to produce water vapor, and the water vapor passes through the steam buffer space 33 and is output from the steam outlet 32; the water storage tank of the utility model is connected to the evaporation chamber 31 by a connecting pipe 5. After the water in the evaporation chamber 31 is partially evaporated, the water level in the evaporation chamber 31 is lower than the water level in the water storage tank. The water in the water storage tank will automatically flow into the evaporation chamber 31 through the connecting pipe 5 for replenishment, thereby improving the overall evaporation time.

[0039] Example 2

[0040] The difference between this embodiment and embodiment 1 is that Figure 2 As shown, the water supply device 6 of this embodiment is a city water supply tap pipe. In addition, this embodiment also includes a water inlet valve 7, which is installed on the connecting pipe 5. The other end of the connecting pipe 5 away from the evaporation chamber 31 is connected to the city water supply tap pipe. This embodiment replaces the water storage tank of Example 1 with a city water supply tap pipe. During use, the water inlet valve 7 adjusts the water intake so that the water intake is basically the same as the evaporated water amount. When the water intake is too small, that is, the water intake is less than the evaporated water amount, a portion of the metal heat-conducting shell 2 is exposed above the water surface, causing the power of the PTC heating element 1 to decrease, and the evaporated water amount will also decrease. In this way, the balance between the water intake and the evaporation amount is achieved. All other aspects are the same as Example 1, and the effects of Example 1 are also achieved.

[0041] Example 3

[0042] The difference between this embodiment and embodiment 1 is that Figure 3 As shown, in this embodiment, a drain pipe 8 is also provided, which is connected to the steam buffer space 33. The position where the drain pipe 8 is connected to the steam chamber is placed on the lower side of the steam buffer space 33 and is adjacent to the steam chamber. The provision of the drain pipe 8 can help drain splashed water. When water evaporates on the surface of the metal heat-conducting shell 2, the calcium, magnesium and other ions contained in the nearby water are concentrated, and the concentration of various ions is higher, which easily forms scale on the surface of the metal heat-conducting shell 2. After the drain pipe 8 is provided, water with a high concentration of calcium, magnesium and other ions will splash to the drain pipe 8 and be discharged, reducing the speed of scale formation on the surface of the metal heat-conducting shell 2. Preferably, the inner diameter of the drain pipe 8 is less than one-tenth of the diameter of the steam outlet 32, and the aperture of the drain pipe 8 is less than one-tenth of the steam outlet 32, which will not affect the normal discharge of steam from the steam outlet 32. All other aspects are the same as those of Example 1, and the effects of Example 1 are also achieved.

[0043] Example 4

[0044] The difference between the embodiment and embodiment 1 is that, as shown in the figure, the water inlet valve 7 and the drain pipe 8 are also arranged in the embodiment, in particular, the water supply device 6 of the embodiment is a city water supply pipe, so that the boiling water bubbles on the upper end surface of the evaporation chamber 31 can splash into the drain pipe 8 for discharge, reducing the speed of water scale on the surface of the metal heat-conducting shell 2, and the water supply device 6 adopts the city water supply pipe to replace the water storage tank in embodiment 1, and cooperates with the water inlet valve 7 to regulate the water inlet amount, which can also meet the corresponding requirements, and can also be combined with the operation of the drain pipe 8. The others are the same as embodiment 1, and the same effect as embodiment 1 is achieved. Figure 4

[0045] The above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.​

Claims

1. A PTC heated water evaporator characterized by, The PTC heating element (1), a metal heat-conducting shell (2), an evaporation chamber (3), a power line (4), a communication pipe (5) and a water supply device (6) are included. A first installation space (21) is formed inside the metal heat-conducting shell (2), and the PTC heating element (1) is installed in the first installation space (21) and tightly abuts against the inner wall of the metal heat-conducting shell (2). The PTC heating element (1) is electrically connected with the power line (4). An evaporation chamber (31) is formed in the evaporation chamber shell (3), and the metal heat-conducting shell (2) is inserted into the evaporation chamber (31). An upper end of the evaporation chamber shell (3) is provided with a steam outlet (32) which is in communication with the evaporation chamber (31). The water supply device (6) is in communication with the evaporation chamber (31) through the communication pipe (5).

2. A PTC heating water evaporator according to claim 1, characterized in that, A steam buffer space (33) is arranged between the steam outlet (32) and the evaporation chamber (31).

3. A PTC heating water evaporator according to claim 2, characterized in that, The height of the steam buffer space (33) is 10-100 mm.

4. A PTC heating water evaporator according to claim 1, characterized in that, The PTC heating element (1) is a constant-temperature heating ceramic element mainly made of barium titanate.

5. A PTC heating water evaporator according to claim 4, characterized in that, The outer surface of the metal heat-conducting shell (2) is covered with an anti-corrosion heat-conducting layer.

6. A PTC heating water evaporator according to claim 5, characterized in that, The water supply device (6) includes a water storage tank or a city water supply pipe.

7. A PTC heating water evaporator according to claim 6, characterized in that, The water capacity of the evaporation chamber (31) is less than or equal to one-tenth of the water storage tank.

8. A PTC heating water evaporator according to claim 5, characterized in that, A water inlet valve (7) is further included, which is arranged on the communication pipe (5), and the other end of the communication pipe (5) which is away from the evaporation chamber (31) is in communication with the city water supply pipe.

9. A PTC heating water evaporator according to claim 2, characterized in that, A drain pipe (8) is further included, which is in communication with the steam buffer space (33). The position where the drain pipe (8) is in communication with the steam chamber is located on the lower side of the steam buffer space (33) and is adjacent to the steam chamber.

10. A PTC heating water evaporator according to claim 9, characterized in that, The inner diameter of the drain pipe (8) is less than one-tenth of the diameter of the steam outlet (32).

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