CN218409882U

CN218409882U - Steam generator with improved structure

Info

Publication number: CN218409882U
Application number: CN202222572052.9U
Authority: CN
Inventors: 叶群; 何业洪
Original assignee: Hangzhou Zuopasi Industry Co ltd
Current assignee: Hangzhou Zuopasi Industry Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-01-31
Anticipated expiration: 2032-09-28

Abstract

The utility model relates to an electrical heating technology aims at providing a steam generator who improves the structure. The method comprises the following steps: the heating cavity is provided with a water inlet nozzle, a steam outlet nozzle and a sewage discharge outlet, and the electric heating pipe and the temperature control unit are attached to the bottom surface of the heating cavity; a water level monitoring device and a water-vapor separator are arranged in the heating cavity; a vertical baffle is arranged in the water-steam separator and used for blocking water drops in the steam and recovering the water drops to the heating cavity; the inside of the water-steam separator is communicated with the steam outlet. The water level monitoring device in the product can monitor the water level in the heating cavity in real time, and the water-vapor separator can control the dryness of the generated steam, so that the problem of poor dryness of the steam and even water spraying in the existing product is solved; avoid the product dry combustion method when the dry steam of stable output, optimized product heat exchange efficiency greatly. The water level monitoring device enables the water level in the steam generator to be always maintained in a range which is easy to generate dry steam, so that the steam output is more stable and the dryness is better.

Description

Steam generator with improved structure

Technical Field

The utility model relates to an electrical heating technology, in particular to steam generator of improved structure.

Background

The steam generator technology used in the existing kitchen cooking equipment has various forms, and the dryness of the steam directly produced by single heating is not ideal. In order to obtain relatively dry steam, designers have proposed a process of secondarily heating and drying the steam. For example, the chinese patent application 201910960733.2 describes a steam generator, which is to install a temperature controller on a liquid water heating device for controlling the heating action of the liquid water heating device; the upper cavity is provided with a temperature controller for controlling the heating action of the steam heater, thereby realizing the temperature control of the upper cavity and obtaining drier steam. However, the secondary heating and drying requires an additional heating element, and uses electric energy for heating or high-temperature steam medium for heat exchange, so that it is not ideal in terms of manufacturing cost and energy consumption.

In addition, a steam generator in the existing kitchen cooking equipment mainly controls the on-off of a heating device and the on-off of water of a water inlet valve through a temperature controller, so that the temperature of a heater is controlled. In this process, the steam may not be dried well when the deviation of the water level in the steam generator is large. So that a secondary heating has to be used to obtain a drier steam. The use of steam generators with frequent water supply and cutoff also results in poor stability of the steam produced by the equipment.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome not enough among the prior art, provide a steam generator who improves the structure.

In order to solve the technical problem, the utility model discloses a solution is:

there is provided a steam generator of an improved structure, including: a heating chamber for containing water and steam generated by heating; the heating cavity is hollow and sealed and is provided with a water inlet nozzle, a steam outlet nozzle and a sewage outlet; the electric heating pipe is attached to the bottom surface of the heating cavity to form a heating area and is used for heating water and generating steam; the water level monitoring device is arranged inside the heating cavity and used for monitoring the water level change in the heating cavity; the temperature control unit is connected with the water level monitoring device and the electric heating pipe through a lead and used for regulating and controlling the heating power of the electric heating pipe according to the water level change in the heating cavity; the water-vapor separator is arranged inside the heating cavity; a vertical baffle is arranged in the water-steam separator and used for blocking water drops in the steam and recovering the water drops to the heating cavity; the inside of the water-steam separator is communicated with the steam outlet.

As an improved scheme, the water-vapor separator is provided with an inclined bottom plate which divides part of the heating cavity to form a water-vapor separation cavity; a gap is reserved between the upper edge of the bottom plate and the top surface of the heating cavity for steam to pass through, and the steam outlet is communicated with the water-steam separation cavity; a plurality of vertical baffles are arranged in the water-vapor separation cavity, gaps or through holes are formed on the baffles or between the baffles and the top surface of the heating cavity for steam to pass through, and gaps or through holes are reserved between the baffles and the bottom plate for flowing water; gaps or through holes are arranged at the lower edge of the bottom plate, so that water blocked by the baffle can flow back to the heating cavity corresponding to the heating area.

As an improved scheme, the baffle is fixed on the bottom plate, and the upper edge of the baffle is connected with the top surface of the heating cavity; or the baffle is fixed on the top surface of the heating cavity, and the lower edge of the baffle is connected with the bottom plate.

As an improved scheme, the steam outlet nozzle is arranged on the top surface or the upper part of the side wall of the heating cavity, the water inlet nozzle is arranged on the bottom surface or the lower part of the side wall of the heating cavity, and the sewage draining outlet is arranged on the bottom surface of the heating cavity.

As an improved scheme, the heating cavity is obliquely arranged, and the included angle between the bottom surface of the heating cavity and the horizontal plane is 15-30 degrees; the water level monitoring device and the water-vapor separator are oppositely arranged at two ends of the heating cavity, and the horizontal position of the water level monitoring device is lower than that of the water-vapor separator; the sewage draining outlet is positioned on the bottom surface of the heating cavity on one side of the water level monitoring device.

As an improved scheme, the water level monitoring device is a water level probe, the tail end of the water level monitoring device is fixedly arranged on the top surface of the heating cavity, the needle point of the water level monitoring device faces downwards, and a signal wire is led out from the tail end and is connected with the temperature control unit and an electric control valve for external water supply. As a modified scheme, the temperature control unit comprises a temperature controller and an NTC assembly.

As an improved scheme, a vertical downward enclosure is arranged on the top surface of the heating cavity, an independent heating space is enclosed in the heating cavity, and the water level monitoring device is positioned in the independent heating space; a gap or a through hole is reserved between the upper edge of the enclosing barrier and the top surface of the heating cavity body for steam to pass through, and a gap or a through hole is reserved between the lower edge of the enclosing barrier and the bottom surface of the heating cavity body for water to pass through.

As an improved scheme, the heating cavity is formed by assembling an upper cavity and a lower cavity in an opposite mode, and a sealing ring is arranged between the upper cavity and the lower cavity; or the heating cavity is formed by assembling the box-shaped body and the upper cover, and a sealing ring is arranged between the box-shaped body and the upper cover; the upper cavity and the lower cavity or the box-shaped body and the upper cover are fixedly arranged through the quick fastening clamp; the upper cavity and the lower cavity or the box-shaped body and the upper cover are respectively provided with a flange for clamping, and the quick fastening clamp is in a strip shape and is provided with folded edges which are oppositely arranged and the edges of which are slightly folded inwards; after the upper cavity, the sealing ring and the lower cavity are oppositely installed or the box-shaped body, the sealing ring and the upper cover are oppositely installed, the quick fastening clamp clamps the corresponding flange by the folded edge of the quick fastening clamp and realizes sealing.

As an improved scheme, the electric heating pipe is in a U-shaped, W-shaped or M-shaped bent layout; the electric heating pipe and the temperature control unit are arranged on the bottom surface of the heating cavity through a metal mounting plate; the edge of the metal mounting plate is provided with a plurality of clamping jaws which are downward and upward respectively, and the electric heating pipe and the heating cavity are fixed by brazing after being mounted on the metal mounting plate through the clamping jaws; the temperature control unit is installed on the electric heating pipe through the bottom plate with the clamping jaws and then fixed through brazing.

Compared with the prior art, the utility model has the technical effects that:

1. the utility model provides a water level monitoring device can the inside water level of real-time supervision heating cavity, and the moisture separator can control the dryness fraction that produces steam. The design of combining the two solves the problems of poor steam dryness and even water spraying in the existing product; avoid the product dry combustion method when the dry steam of stable output, optimized the heat exchange efficiency and the cost control of product greatly.

2. Through using the water level in the water level monitoring device real time monitoring steam generator, make the water level in the steam generator maintain the scope at an extremely easily produce comparatively dry steam all the time to the output that makes steam is more stable and the degree of dryness is better.

3. By using the steam separator, the steam condensate is recovered while the steam is separated, and the steam condensate can return to the heating area at any time only through the through hole on the bottom plate, so that the product structure is further simplified.

4. The heating cavity is provided with the enclosure, a relatively closed space is formed at the periphery of the water level monitoring device, and the space is positioned at the cold end of the electric heating pipe. The peripheral heating condition of water level monitoring device and water level change are in a stable state through this design, can not lead to the water level to detect the deviation too big because of the water boiling to the precision of water level control has been promoted.

5. Through stretching into steam separation chamber with the play steam nozzle, can prevent that the comdenstion water from going out the steam nozzle and discharging, improved the steam dryness fraction.

6. The rapid fastening clamp is used for replacing the traditional fastening mode of bolts and nuts, so that the assembly is rapid and convenient; and the area of the fastening flange surface of the evaporator can be reduced, and the manufacturing cost is reduced.

Drawings

Fig. 1 is an explosion diagram of the product of the present invention.

Fig. 2 is a sectional view of the product.

Fig. 3 is a perspective view of the assembled product.

FIG. 4 is a schematic diagram of the structure of the water-vapor separator.

The reference numbers in the figures are: a water level probe 1; an upper cavity 2; a water-vapor separator 3; a seal ring 4; a quick fastening clip 5; a lower cavity 6; an electric heating tube 7; a temperature controller 8; an NTC component 9; a fence 10; a baffle plate 11; a steam outlet 12; a water inlet nozzle 13; a waste outlet 14.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in the figure, the utility model discloses a steam generator of improved structure includes: the heating device comprises a heating cavity, an electric heating pipe 7, a water level monitoring device, a temperature control unit and a water-vapor separator. Wherein:

the heating cavity is a hollow sealed cavity structure and is used for containing water and steam generated by heating. In the figure, the heating cavity is formed by oppositely assembling an upper cavity 2 and a lower cavity 6, and a sealing ring 4 is arranged between the upper cavity and the lower cavity; the upper cavity 2 and the lower cavity 6 are provided with flanges for clamping, and the fixed installation is realized through the quick fastening clamp 5. The quick fastening clamp 5 is strip-shaped, is provided with folded edges which are oppositely arranged and the edges of which are slightly folded inwards, and can clamp the flanges of the upper cavity 2 and the lower cavity 6 by the folded edges and realize sealing. Alternatively, the box-shaped body and the upper cover can be assembled to form a heating cavity, a sealing ring is arranged between the box-shaped body and the upper cover, and the box-shaped body and the upper cover are fixedly installed through matching with the flange.

The electric heating tube 7 can be in a U-shaped, W-shaped or M-shaped bent layout and is attached to the bottom surface of the heating cavity to form a heating area for heating water and generating steam. The electric heating tube 7 and the temperature control unit are tightly attached to the bottom surface of the heating cavity body through a metal mounting plate. A plurality of clamping jaws which are downward and upward respectively are arranged at the edge of the metal mounting plate, and after the electric heating pipe 7 and the heating cavity are mounted on the metal mounting plate through the clamping jaws, the electric heating pipe and the heating cavity are fixed through brazing. The temperature control unit comprises a temperature controller 8 and an NTC component 9, and is fixed by brazing after being arranged on the electric heating pipe 7 through a bottom plate with a clamping jaw; alternatively, the fixation may be achieved directly by brazing. Preferably, a liner made of a flame-retardant and heat-insulating material can be further provided for the electric heating tube 7 at the bottom of the steam generator, so as to reduce heat loss and improve heat efficiency.

The heating cavity is obliquely arranged, and the included angle between the bottom surface of the heating cavity and the horizontal plane ranges from 15 degrees to 30 degrees. At both ends of the interior of the heating chamber, a water vapor separator 3 and a water level probe 1 (as a water level monitoring device) are oppositely installed, and the horizontal position of the water level probe 1 is lower than the water vapor separator 3. The sewage draining outlet 14 is arranged on the bottom surface of the lower cavity 6 at the lower end, the water inlet nozzle 13 and the steam outlet nozzle 12 are arranged on the side wall of the upper cavity 2 at one end of the water-steam separator 3, and the position of the steam outlet nozzle 12 is higher than that of the water inlet nozzle 13. Alternatively, the steam outlet 12 may be provided on the top surface of the upper chamber 2, and the water inlet 13 may be provided on the side wall or the bottom surface of the lower chamber 6.

The top surface of the upper cavity 2 is provided with a vertical downward surrounding baffle 10, and an independent heating space is formed by surrounding the inside of the heating cavity. A gap or a through hole is reserved between the upper edge of the enclosure 10 and the top surface of the upper cavity 2 and is used for steam to pass through; a gap or a through hole is reserved between the lower edge of the enclosure 10 and the bottom surface of the lower cavity 6 for water to pass through. A water level probe 1 is located in the separate heating space for monitoring the water level variation in the heating chamber. The water level probe 1 has a downward needle tip and a tail end fixedly mounted on the top surface of the upper cavity 2, and signal lines led out from the tail end are respectively connected with a temperature controller 8 and an electric control valve (not shown in the figure) for external water supply.

The water-vapor separator 3 is provided with an inclined bottom plate, a part of heating cavities are separated to form a water-vapor separation cavity, and the upper edge of the bottom plate can be further provided with a vertical folded edge. A gap remains between the upper edge of the bottom plate and the top surface of the upper chamber body 2 for the passage of steam. A plurality of vertical baffle plates 11 are arranged in the water-vapor separation cavity, the baffle plates 11 are fixed on the top surface of the heating cavity, and the lower edges of the baffle plates are connected with the bottom plate of the water-vapor separator 3. Alternatively, the baffle 11 may be fixed to the bottom plate, and the upper edge thereof is connected to the top surface of the heating chamber. Correspondingly, a groove can be arranged on the upper edge of the side plate of the water-vapor separator 3, or a clamping groove is arranged on the top surface of the heating cavity for embedding the mounting baffle 11, so that the water-vapor separator 3 can be stably mounted in the heating cavity. A gap or a through hole is reserved between the baffle plate 11 and the bottom plate and is used for flowing water; a gap or through hole is left on the baffle 11 or between the baffle 11 and the top surface of the heating chamber for passing steam. A gap or a through hole is arranged at the lower edge of the bottom plate, so that the condensed water blocked by the baffle plate 11 can flow back to the heating cavity. In the figure, the steam outlet nozzle 12 and the water inlet nozzle 13 are both communicated with the steam separation cavity. The steam outlet 12 is used for leading out dried steam; the water inlet nozzle 13 is used for introducing fresh water and carrying recovered condensed water to enter the heating cavity corresponding to the heating area through the gap or the through hole on the bottom plate.

In the temperature control unit, a temperature controller 8 is connected with an NTC component 9 through a lead for detecting the temperature change of the electric heating pipe 7. Meanwhile, the temperature controller 8 is also connected with the water level probe 1 and the electric heating tube 7 through leads respectively, and adjusts and controls the heating power of the electric heating tube 7 according to the water level change in the heating cavity. When the steam generated in the heating cavity is led out, the water level probe 1 monitors that the water level is reduced to a set position, the temperature controller 8 stops heating according to the detection signal, and meanwhile, the controller of the external electric control valve receives the water level signal to open the valve to feed fresh water. When the water level probe 1 detects that the water level rises to a set position, the controller of the external electric control valve receives a water level signal to close the valve to stop water supply, and meanwhile, the temperature controller 8 starts heating according to the detection signal.

In the steam generator of the utility model, the installation mode that the heating cavity is inclined at a certain angle is adopted, so that one end of the sewage discharge port 14 is positioned at the lowest point, and the sewage discharge is convenient; in addition, the water level probe 1 can be positioned at the deepest part of the water level by the processing mode, so that the problems that the boiling state is unstable at the position with too low water level and the change of a monitoring signal is large, and the heating power of the electric heating pipe 7 is difficult to adjust are avoided. Based on the design, the water inlet nozzle 13 is used for supplementing water to a set water level and then stopping water inlet, so that the water level can be always maintained in an ideal water level interval. Meanwhile, the electric heating tube 7 is monitored based on the NTC component 9 and the temperature controller 8 to ensure that the working temperature is always in a relatively stable interval, so that the steam generator can stably generate steam. Through the design of enclosing fender 10, make water level probe 1 peripheral can form a relatively confined space, water level probe 1 is located the deepest and electric heating pipe 7's of water level cold junction, makes its this region be in relatively more steady heating state all the time to the precision of water level detection and heating control has been promoted.

In the heating chamber, water is heated to boil by the electric heating tube 7 below the heating area to generate steam. Steam enters the water-steam separation chamber through the enclosure 10 and the water-steam separator 3. In the area, water drops in the steam are intercepted and separated by the blocking adsorption of a plurality of baffles 11, and the dried steam is discharged out of the steam generator through a steam outlet 12. The utility model discloses a to the improvement of product structure, the dryness fraction that makes steam obtains improving, has still optimized heat exchange efficiency and cost control simultaneously. The problems of poor dryness of steam and unstable produced steam in the existing product are solved; the cost and energy consumption for carrying out secondary drying of the steam are also saved, and the use cost, the energy consumption and the like of the product are well optimized. In addition, through using quick fastening clamp 5 to replace the fastening mode of bolt nut in traditional product, can make the assembly more convenient fast, can reduce the area of the fastening flange face of evaporimeter moreover, reduce manufacturing cost.

Claims

1. A steam generator of an improved structure, comprising:

a heating chamber for containing water and steam generated by heating; the heating cavity is hollow and sealed and is provided with a water inlet nozzle, a steam outlet nozzle and a sewage outlet;

the electric heating pipe is attached to the bottom surface of the heating cavity to form a heating area and is used for heating water and generating steam;

the water level monitoring device is arranged inside the heating cavity and used for monitoring the water level change in the heating cavity;

the temperature control unit is connected with the water level monitoring device and the electric heating pipe through a lead and used for regulating and controlling the heating power of the electric heating pipe according to the water level change in the heating cavity;

the water-vapor separator is arranged inside the heating cavity; a vertical baffle is arranged in the water-steam separator and used for blocking water drops in the steam and recovering the water drops to the heating cavity; the inside of the water-steam separator is communicated with the steam outlet.

2. The steam generator of claim 1, wherein the water-vapor separator has an inclined floor that divides the partially heated chamber to form a water-vapor separation chamber; a gap is reserved between the upper edge of the bottom plate and the top surface of the heating cavity for steam to pass through, and the steam outlet is communicated with the water-steam separation cavity; a plurality of vertical baffles are arranged in the water-vapor separation cavity, gaps or through holes are formed on the baffles or between the baffles and the top surface of the heating cavity for steam to pass through, and gaps or through holes are reserved between the baffles and the bottom plate for flowing water; gaps or through holes are arranged at the lower edge of the bottom plate, so that water blocked by the baffle can flow back to the heating cavity corresponding to the heating area.

3. The steam generator of claim 1, wherein the baffle is fixed to the base plate with an upper edge thereof contacting a top surface of the heating chamber; or the baffle is fixed on the top surface of the heating cavity, and the lower edge of the baffle is connected with the bottom plate.

4. The steam generator as claimed in claim 1, wherein the steam outlet is disposed at an upper portion of a top surface or a sidewall of the heating chamber, the water inlet is disposed at a lower portion of a bottom surface or a sidewall of the heating chamber, and the drain outlet is disposed at a bottom surface of the heating chamber.

5. The steam generator of claim 1, wherein the heating chamber is installed in an inclined manner, and an included angle between a bottom surface of the heating chamber and a horizontal plane is in a range of 15-30 °; the water level monitoring device and the water-vapor separator are oppositely arranged at two ends of the heating cavity, and the horizontal position of the water level monitoring device is lower than that of the water-vapor separator; the sewage draining outlet is positioned on the bottom surface of the heating cavity on one side of the water level monitoring device.

6. The steam generator as claimed in claim 1, wherein the water level monitoring device is a water level probe having a tail end fixedly installed on the top surface of the heating chamber and a tip end facing downward, and a signal line led from the tail end is connected to the temperature control unit and an electric control valve for supplying water from outside.

7. The steam generator of claim 1, wherein the temperature control unit comprises a thermostat and an NTC assembly.

8. The steam generator as claimed in claim 1, wherein the top surface of the heating chamber is provided with a vertically downward enclosure, an independent heating space is defined inside the heating chamber, and the water level monitoring device is located in the independent heating space; a gap or a through hole is reserved between the upper edge of the enclosing barrier and the top surface of the heating cavity body and used for steam to pass through, and a gap or a through hole is reserved between the lower edge of the enclosing barrier and the bottom surface of the heating cavity body and used for water to pass through.

9. The steam generator of claim 1, wherein the heating chamber is formed by assembling an upper chamber and a lower chamber with a sealing ring therebetween; or the heating cavity is formed by assembling the box-shaped body and the upper cover, and a sealing ring is arranged between the box-shaped body and the upper cover; the upper cavity and the lower cavity or the box-shaped body and the upper cover are fixedly arranged through the quick fastening clamp; the upper cavity and the lower cavity or the box-shaped body and the upper cover are respectively provided with a flange for clamping, and the quick fastening clamp is in a strip shape and is provided with folded edges which are oppositely arranged and the edges of which are slightly folded inwards; after the upper cavity, the sealing ring and the lower cavity are oppositely installed or the box-shaped body, the sealing ring and the upper cover are oppositely installed, the quick fastening clamp clamps the corresponding flange by the folded edge of the quick fastening clamp and realizes sealing.

10. The steam generator of claim 1, wherein the electric heating tube is in a U-shaped, W-shaped or M-shaped folded layout; the electric heating pipe and the temperature control unit are arranged on the bottom surface of the heating cavity through a metal mounting plate; the edge of the metal mounting plate is provided with a plurality of clamping jaws which are downward and upward respectively, and the electric heating pipe and the heating cavity are fixed by brazing after being mounted on the metal mounting plate through the clamping jaws; the temperature control unit is installed on the electric heating pipe through the bottom plate with the clamping jaws and then fixed through brazing.