CN112690658A - Warm water machine and milk machine of makeing that can accurate temperature adjustment - Google Patents
Warm water machine and milk machine of makeing that can accurate temperature adjustment Download PDFInfo
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- CN112690658A CN112690658A CN202110100626.XA CN202110100626A CN112690658A CN 112690658 A CN112690658 A CN 112690658A CN 202110100626 A CN202110100626 A CN 202110100626A CN 112690658 A CN112690658 A CN 112690658A
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/54—Water boiling vessels in beverage making machines
- A47J31/56—Water boiling vessels in beverage making machines having water-level controls; having temperature controls
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/4403—Constructional details
- A47J31/441—Warming devices or supports for beverage containers
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/46—Dispensing spouts, pumps, drain valves or like liquid transporting devices
- A47J31/468—Pumping means
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/54—Water boiling vessels in beverage making machines
- A47J31/542—Continuous-flow heaters
- A47J31/545—Control or safety devices
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- Food Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The invention relates to the technical field of warm water equipment, and particularly discloses a warm water machine capable of accurately adjusting temperature, which comprises a sectional control heater, a heat exchanger and an electric control system, wherein the sectional control heater comprises a heating substrate with a plurality of heating areas and a water passing part with a plurality of water passing areas, and each heating area is provided with a heating body and a temperature sensor; the cold water channel of the heat exchanger is filled with preheated cold water from one sub-heater, the output end of the cold water channel conveys water to the other sub-heater, the hot water channel of the heat exchanger is filled with boiled water heated by the sub-heater and exchanges heat with the cold water in the cold water channel to output warm water; the electric control system comprises a main control circuit, a switch circuit and a power supply circuit which are connected with the temperature sensors, the power supply circuit comprises a voltage input circuit, a voltage transformation circuit, an optical coupling circuit, a voltage processor and a rectifying circuit, and the main control chip controls the voltage value output to the heating body by the rectifying circuit so as to adjust the heating temperature of the heating body. Also discloses a milk foaming machine comprising the warm water boiling machine.
Description
Technical Field
The invention relates to the technical field of warm water equipment, in particular to a warm water machine capable of accurately adjusting temperature and a milk brewing machine.
Background
The warm water boiler is also called warm water dispenser, and is a drinking water device which cools boiled water through a heat exchanger to obtain warm boiled water with proper temperature and is convenient for users to drink instantly. The outlet water temperature of the warm water boiler mainly depends on the performance of the heat exchanger, the heat energy conversion efficiency of the heat exchanger is mainly determined by the material of the heat conduction mechanism and the water path design of the heat exchanger, and the temperature of the warm water output by the warm water boiler mainly depends on the temperature of the cooling water under the condition determined by the heat exchanger. However, the warm water machine is affected by the ambient temperature due to different use regions and seasons, and the change of the water temperature input into the cold water pipeline of the heat exchanger is large, so that the temperature of the warm water output by the same warm water machine in different regions and seasons is also different, the function of the traditional warm water machine is single, the output temperature of the warm water cannot be adjusted, the use requirements of users in different regions or the use requirements of the users in different seasons are difficult to meet, and the market competitiveness of the product is not favorably improved.
Disclosure of Invention
Therefore, the warm water machine and the milk brewing machine capable of accurately adjusting the temperature are needed to be provided for solving the technical problem that the outlet temperature of warm water is not easy to adjust.
A warm water machine capable of precisely adjusting temperature comprises:
the segmented control heater comprises a heating substrate and a water passing piece which is matched with the heating substrate and forms a plurality of sub-heaters, a plurality of heating zones are arranged on the heating substrate at intervals, and a heating body which generates heat when power is connected and a temperature sensor for detecting water temperature are respectively arranged on each heating zone; a plurality of water passing areas which correspond to the heating areas one by one are arranged on the water passing piece at intervals, an independent continuous water channel is arranged on the surface of each water passing area, a water inlet and a water outlet which are communicated with the continuous water channels are formed in the two ends of the water passing piece corresponding to each continuous water channel respectively, the water inlet of one of the sub-heaters is used for receiving cold water from the outside, one side wall surface of the heating substrate, which is back to the heating body, is matched with the continuous water channels to form a plurality of closed water channels, and a sealing structure is arranged between every two adjacent closed water channels;
the heat exchanger comprises at least one heat exchange unit consisting of a separation plate, and a cold water channel and a hot water channel which are formed on two sides of the separation plate, wherein the input end of the cold water channel is communicated with the water outlet of a sub-heater connected with water to be heated so as to be connected with preheated cold water, the output end of the cold water channel is communicated with the water inlet of another sub-heater so as to provide a heating water source, the input end of the hot water channel is communicated with the water outlet of the sub-heater connected with the output end of the cold water channel so as to be connected with boiled water, the boiled water in the hot water channel exchanges heat with the cold water in the cold water channel through the separation plate, and the output end of the hot water;
an electric control system, which comprises a main control circuit with a main control chip, a switch circuit and a power supply circuit, wherein the switch circuit and the power supply circuit are electrically connected with the main control chip, the main control chip is respectively electrically connected with the temperature sensors of the sub-heaters to receive temperature signals sent by the temperature sensors, the power supply circuit comprises a voltage input circuit electrically connected with an external power supply, a voltage transformation circuit and an optical coupling circuit which are connected with the voltage input circuit, a voltage processor connected with the voltage transformation circuit and the optical coupling circuit, and a rectification circuit connected with the voltage processor and the voltage transformation circuit, the output end of the rectifying circuit is respectively connected with the heating bodies of the sub-heaters to provide voltage, and the main control chip is used for controlling the voltage value output to the heating bodies by the rectifying circuit so as to adjust the heating temperatures of different heating bodies.
In one embodiment, the electronic control system further comprises a zero-crossing detection circuit electrically connected with the main control chip and provided with an optical coupler.
In one embodiment, the electronic control system further comprises a communication circuit electrically connected with the main control chip and provided with a communication serial port, and the main control chip is in communication connection with an external control terminal through the communication serial port.
In one embodiment, the warm water boiler further comprises a water pump electrically connected with the main control chip, and the water pump is used for storing the normal temperature water input by an external water pipe or a water tank and delivering cold water to the sub-heater connected with the input end of the cold water channel at a predetermined flow rate under the control of the main control chip.
In one embodiment, an output end of the water pump and an output end of the hot water channel are respectively provided with an NTC temperature sensing device, and the two NTC temperature sensing devices are respectively electrically connected with the main control chip.
In one embodiment, the electric control system further comprises a control panel electrically connected with the main control chip and used for inputting a temperature control instruction and displaying the water inlet temperature, the warm water outlet temperature and the water pump flow information of the warm water boiler.
In one embodiment, the heating substrate is made of quartz material, food-grade stainless steel material or ceramic material, and the heating body is thick film paste, graphene or a resistance wire wound on the heating substrate and coated on the heating substrate.
In one embodiment, the heating base body and the water passing piece are both in a plate-shaped structure or a circular tubular structure or a cylindrical structure and a circular tubular structure which are matched with each other, when the heating base body is in the circular tubular structure and the water passing piece is in the cylindrical structure, the heating base body is positioned on the outer layer of the sectional control heater, and the water passing piece is positioned on the core part of the sectional control heater; when the heating base body and the water passing piece are both in a round tubular structure, the heating base body is positioned in the core part of the sectional control heater, and the water passing piece is positioned on the outer layer of the sectional control heater.
In one embodiment, a plurality of heat exchange units are stacked, a heat-conductive metal partition plate is arranged between every two adjacent heat exchange units, the input ends of the cold water channels of the heat exchange units are communicated, preheated cold water is introduced from a sub-heater connected with water to be heated, the output ends of the cold water channels of the heat exchange units are communicated and communicated with the water inlet of another sub-heater, the input ends of the hot water channels of the heat exchange units are communicated with the sub-heater connected with the output end of the cold water channel to be heated to be connected with boiled water, and the output ends of the hot water channels of the heat exchange units are communicated to output direct drinking warm water.
The invention also discloses a milk foaming machine comprising the warm water boiling machine.
According to the warm water boiler and the milk brewing machine capable of accurately adjusting the temperature, the sectional control heater is arranged to preheat the cold water entering the cold water channel of the heat exchanger, so that the water in the cold water channel is heated to the preset temperature and then exchanges heat with the hot water in the hot water channel, therefore, a user can control the voltage of the heating body in the sub-heater for preheating the cold water in the sectional control heater according to needs, the temperature of warm water output by the heat exchanger can reach an expected arbitrary value, the warm water using requirements of the user in different areas, different seasons and different using scenes can be met, the water temperature of the warm water boiler is controlled simply, the water outlet temperature can be adjusted accurately, and the reliability and market competitiveness of the quality of the warm water boiler and the milk brewing machine are improved.
Drawings
FIG. 1 is a schematic structural diagram of a warm water machine capable of precisely adjusting temperature according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a segmented control heater according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a heating matrix according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a water passing member according to an embodiment of the present invention;
FIG. 5 is a schematic view of a heating substrate according to another embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a water passage member according to another embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of a heat exchanger according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of the construction of a cold water plate in one embodiment of the present invention;
FIG. 9 is a schematic view of a hot water plate according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of an electrical control system according to an embodiment of the present invention;
FIG. 11 is a circuit schematic of the master control circuit in one embodiment of the invention;
FIG. 12 is a circuit schematic of a zero crossing detection circuit in an embodiment of the present invention;
FIG. 13 is a circuit schematic of a communication circuit in one embodiment of the invention;
FIG. 14 is a schematic circuit diagram of a water pump circuit in an embodiment of the present invention;
FIG. 15 is a schematic circuit diagram of an intake NTC temperature sensing device in an embodiment of the present invention;
FIG. 16 is a schematic circuit diagram of a water outlet NTC temperature sensing device in an embodiment of the present invention;
FIG. 17 is a circuit schematic of a switching circuit in an embodiment of the invention;
fig. 18 is a circuit schematic of a power supply circuit in an embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Referring to fig. 1, the present invention discloses a warm and hot water machine 10 capable of precisely adjusting temperature, the warm and hot water machine 10 includes a segment control heater 100, a heat exchanger 200 and an electric control system 300, wherein the segment control heater 100 includes a plurality of sub-heaters, preferably, the segment control heater 100 includes two sub-heaters, one of the sub-heaters is used for receiving normal temperature water input from an external water pipe or a water tank and preheating the normal temperature water, so as to input cold water of a predetermined temperature into a cold water passage 220 of the heat exchanger 200, the other sub-heater of the segment control heater 100 is used for receiving cold water output from a cold water passage 220 after heat exchange and using the cold water as a heating water source, after heating water, boiled water is introduced into a hot water passage 230 of the heat exchanger 200, so that heat transfer is performed between the hot water in the hot water passage 230 and the preheated cold water in the cold water passage 220, so that the heat exchanger 200 outputs warm water of a predetermined temperature, and thus, by controlling the heating temperature of the sub-heater for preheating water, the heat exchanger 200 can output warm water of an intended arbitrary temperature. It should be noted that any temperature in this embodiment refers to a temperature that satisfies the law of thermodynamics and conforms to the law of water heating and heat exchange, and in general, the temperature of the warm water should be between 30 degrees celsius and 80 degrees celsius. The electronic control system 300 is used for controlling the heating temperature of each sub-heater in the sectional control heater 100, and controlling the temperature of the finally output warm water by adjusting the temperature of the preheated cold water.
Referring to fig. 2 to 4, the segment control heater 100 includes a heating substrate 110 and a water passing element 120 cooperating with the heating substrate 110 and forming a plurality of sub-heaters, wherein the sub-heaters work independently and do not interfere with each other. The heating substrate 110 is used for generating heat under the condition of being electrified so as to provide heat energy for water to be heated, and heating of the water body is realized. Specifically, a plurality of heating zones 111 are arranged on the heating substrate 110 at intervals, a heating body 112 which generates heat when being electrified and a temperature sensor 113 for detecting water temperature are respectively arranged on each heating zone 111, and the water passing piece 120 is used for being matched with the heating substrate 110 together to form a plurality of sub-heaters, namely, the water passing piece 120 is mainly used for providing a space for the heating process of the water body through water to be heated. The water passing part 120 is provided with a plurality of water passing areas 121 corresponding to the heating areas 111 one by one at intervals, namely, each water passing area 121 corresponds to one heating area 111, and the projection of the water passing area 121 in the length direction of the water passing part 120 is larger than the projection of the heating area 111 in the length direction of the heating substrate 110, so that the problem of overhigh local temperature of the heater caused by the overheating of the exposed part of one side of the heating area 111 adjacent to the water passing part 120 is avoided, and the service life of the equipment is prolonged. It should be noted that, the side of the heating substrate 110 opposite to the heating region 111, that is, the side of the heating substrate in contact with the water passing region 121 of the water passing member 120 is in contact with the water introduced into the continuous water passage 122 to heat the water, so as to take away the heat on the heating substrate 110, thereby ensuring that the heating region 111 is not overheated, and improving the safety of the heater in use.
The surface of each water passing area 121 is provided with an independent continuous water channel 122, and the water passing element 120 is provided with a water inlet 123 and a water outlet 124 corresponding to two ends of each continuous water channel 122 and communicated with the continuous water channel 122, respectively, and the water inlet 123 of one of the sub-heaters is used for receiving cold water from the outside, one side wall surface of the heating substrate 110 facing away from the heating body 112 is matched with the continuous water channel 122 on the water passing element 120 to form a plurality of closed water channels, and a sealing structure 125 is arranged between two adjacent closed water channels. It should be noted that, in the embodiment, the heating substrate 110 includes two heating regions 111, and the water passing member 120 includes two water passing regions 121 for illustration, in an actual production, the number of the heating regions 111 and the number of the water passing regions 121 may be increased according to the water temperature control requirement, and will not be described herein again.
In an embodiment, the heating substrate 110 is made of a quartz material, a food-grade stainless steel material, or a ceramic material, and the heating body 112 is thick film paste, graphene, or a resistance wire wound around the heating substrate 110 and coated on the heating substrate 110. The thick film paste and the graphene are resistance pastes, and the two are heated rapidly under the power-on condition and generate heat radiation to the heating substrate 110, so that the heating substrate 110 is heated, and heat radiation is generated to water to be heated in contact with the heating substrate 110 to achieve the purpose of heating the water. When the mode of winding the resistance wire on heating base member 110 is adopted, after the resistance wire circular telegram, when the electric current passes through the resistance wire, the electric current does work and consumes the electric energy, and then produces the heat to heating base member 110 produces the heat radiation, and then with heat transfer to the water with heating base member 110 contact, the realization is to the heating of water. It should be noted that, in this embodiment, no matter a manner of coating thick film paste or graphene or a manner of winding a resistance wire is adopted, the heating body 112 is not disposed at a position between two adjacent sub-heaters, so that, in the working process of the segment control heater 100, a position on the heating substrate 110 where paste is not coated or a portion where the resistance wire is wound does not generate heat, that is, the temperature change of the transition portion between two adjacent sub-heaters is small, thereby reducing the heat transfer amount between two adjacent heating regions 111, and improving the reliability of the segment heating operation of the segment control heater 100 of this embodiment.
Further, when the heating substrate 110 is made of food-grade stainless steel, 304 stainless steel or 316 stainless steel or other food-grade stainless steel with good high temperature resistance and corrosion resistance can be adopted, so that the problem of precipitation of harmful substances when the heating substrate 110 is in contact with a water body is avoided, and the mechanical strength of the heating substrate 110 is improved, and the safety of drinking water is improved. In addition, in this embodiment, the insulating layer 114 is disposed on the surface of the heating substrate 110 made of the food-grade stainless steel material, which is used for disposing the heating body 112, so as to block the electric charge conduction between the heating body 112 and the heating substrate 110, thereby avoiding the occurrence of the electric leakage accident of the segment control heater 100 caused by the electric conduction of the heating substrate 110, and improving the safety of the segment control heater 100.
In one embodiment, the heating substrate 110 is an integrally formed structure or comprises a plurality of sub-substrates detachably connected, and when the heating substrate 110 comprises a plurality of sub-substrates detachably connected, each sub-substrate is correspondingly provided with a heating zone 111, a heating body 112 and a temperature sensor 113; the water passing member 120 is integrally formed or comprises a plurality of detachably connected components, and when the water passing member 120 comprises a plurality of detachably connected components, each component is correspondingly provided with a water passing area 121, and a water inlet 123 and a water outlet 124 which are communicated with the continuous water channel 122 of the water passing area 121. Preferably, when the heating substrate 110 is in a detachable structure, the plurality of sub-substrates are connected by means of a snap, a screw, or a male-female fit, and similarly, when the water passing member 120 is in a detachable structure, the plurality of sub-substrates are connected by means of a snap, a screw, or a male-female fit. It is understood that the heating substrate 110 and the water passing member 120 may be integrated, one of them may be integrated, the other may be disassembled, or both may be disassembled. When the heating base 110 and the water passing piece 120 are both detachable structures, a plurality of sub-heaters which are independent from each other and can be detached independently are formed, so that a user or a production person can select a corresponding number of heating base 110 and water passing pieces 120 to combine according to actual requirements, and the flexibility of the sectional control heater 100 of the embodiment is improved.
In one embodiment, the heating substrate 110 and the water passing member 120 are both plate-shaped structures or circular tube-shaped structures or cylindrical structures and circular tube-shaped structures which are matched with each other, when the heating substrate 110 is in a circular tube-shaped structure and the water passing member 120 is in a cylindrical structure, the heating substrate 110 is located at the outer layer of the segment control heater 100, and the water passing member 120 is located at the core of the segment control heater 100; when the heating base 110 and the water passing part 120 are both in a round tubular structure, the heating base 110 is located in the core of the segment control heater 100, and the water passing part 120 is located in the outer layer of the segment control heater 100. Referring to fig. 2 to 4, when the heating substrate 110 and the water passing member 120 are both plate-shaped structures, the heating substrate 110 is covered on the water passing member 120 and is hermetically connected with the water passing member 120, the surface of the water passing member 120 is recessed to form a continuous water channel 122, and the surface of the heating substrate 110 opposite to the heating body 112 is abutted and sealed with the continuous water channel 122 to form a closed water channel, the continuous channel 122 may be in the form of an S-shaped structure as shown in fig. 4, where the S-shaped structure includes a plurality of S-turns, and thus may be understood as a serpentine structure, a volute-like structure or a square spiral structure, so as to prolong the flow path of the water body to be heated in the continuous water channel 122, ensure the uniform heating of the water body, so that the temperature of the water body output from the same closed water channel is the same at the same heating temperature of the heating body 112, thereby improving the reliability of the water temperature control of each sub-heater in the sectional control heater 100. When the heating substrate 110 is in a circular tube structure and the water passing member 120 is in a cylindrical structure, the heating body 112 and the temperature sensor 113 are disposed on the outer side surface of the heating substrate 110, the outer surface of the water passing member 120 protrudes to form a spiral continuous water channel 122, the water passing member 120 is inserted into the heating substrate 110, the continuous water channel 122 of the water passing member 120 and the heating area 111 on the inner side surface of the heating substrate 110 surround to form a plurality of closed water channels, the heating substrate 110 is provided with water inlet pipes and water outlet pipes which are in one-to-one correspondence with the water inlet 123 and the water outlet 124 of the water passing member 120, two ends of the heating substrate 110 are sealed, in this case, the heating substrate 110 is located on the outer layer of the segment control heater 100, the water passing member 120 is located on the core of the segment.
In another embodiment, when the heating substrate 110 and the water passing member 120 are both of a circular tubular structure, the heating body 112 and the temperature sensor 113 are disposed on the inner surface of the heating substrate 110, the inner surface of the water passing member 120 is convex and encloses a continuous water channel 122, so as to extend the flow path of water to be heated, so that the heating is more uniform, the heating substrate 110 is inserted into the water passing member 120, the outer surface of the heating substrate 110 and the continuous water channel 122 on the inner surface of the water passing member 120 enclose a plurality of closed water channels, the two ends of the water passing member 120 are sealed, in this case, the heating substrate 110 is located at the core of the segmented control heater 100, the water passing member 120 is located at the outer layer of the segmented control heater 100, and the structure of the water passing.
It should be noted that, when the heating substrate 110 and the water passing member 120 are both plate-shaped structures, a straight groove 126 is formed between two adjacent closed water channels, and a sealing strip is disposed in the straight groove 126, and when the heating substrate 110 and the water passing member 120 are both circular tubular structures or cylindrical structures and circular tubular structures that are matched with each other, an annular groove 127 is formed between two adjacent closed water channels on the outer surface or the inner surface of the water passing member 120, and a sealing ring is disposed in the annular groove 127, so as to seal a gap between two adjacent closed water channels, thereby avoiding the water cross-flow problem.
The heat exchanger 200 includes at least one heat exchange unit composed of a partition plate, a cold water passage 220 and a hot water passage 230 formed at both sides of the partition plate, an input end of the cold water passage 220 is communicated with a water outlet 124 of a sub-heater to be heated to be connected with preheated cold water, an output end of the cold water passage 220 is communicated with a water inlet 123 of another sub-heater to provide a heating water source, an input end of the hot water passage 230 is communicated with a water outlet 124 of a sub-heater connected with an output end of the cold water passage 220 to be connected with boiled water, the boiled water in the hot water passage 230 exchanges heat with the cold water in the cold water passage 220 through the partition plate, and direct drinking warm water is output from an output end of the. The heat exchanger 200 of the present embodiment may be a general heat exchanger in which the water chamber is partitioned by a partition plate to form the cold water channel 220 and the hot water channel 230, or may be a parallel heat exchanger in which a plurality of heat exchange units are stacked and connected in parallel, and the structure of the parallel heat exchanger will be described below.
Referring to fig. 7 to 9, in an embodiment, a plurality of heat exchange units are stacked, a heat conductive metal partition plate 210 is disposed between two adjacent heat exchange units, an input end of a cold water channel 220 of each heat exchange unit is communicated and is introduced with preheated cold water by a sub-heater connected to water to be heated, an output end of the cold water channel 220 of each heat exchange unit is communicated and is communicated with a water inlet 123 of another sub-heater, an input end of a hot water channel 230 of each heat exchange unit is communicated with the sub-heater connected to the output end of the cold water channel 220 to be heated, and an output end of the hot water channel 230 of each heat exchange unit is communicated to. Further, the heat exchanger 200 further includes a first pressing plate 240 and a second pressing plate 250 which are oppositely disposed and used for co-extruding each heat exchange unit, and the first pressing plate 240 and the second pressing plate 250 are fixedly connected by bolts to compress each heat exchange unit, so as to improve the structural stability of the heat exchanger 200 and the sealing performance of each heat exchange unit.
Referring to fig. 8 and 9, the heat exchanger 200 further includes a cold water plate 260 and a hot water plate 270, the cold water plate 260 is disposed between two adjacent metal partitions 210 and has a first hollow portion 280, the first hollow portion 280 and the two adjacent metal partitions 210 together enclose a cold water channel 220, the hot water plate 270 is disposed between the two adjacent metal partitions 210 and has a second hollow portion 290, and the second hollow portion 290 and the two adjacent metal partitions 210 together enclose a hot water channel 230. For the cold water plates 260 or the hot water plates 270 located at both sides of the heat exchanger 200, the cold water plates 260 and the metal partition 210 and the first pressing plate 240 or the second pressing plate 250 respectively enclose a cold water channel 220, the hot water plates 270 and the metal partition 210 and the first pressing plate 240 or the second pressing plate 250 respectively enclose a hot water channel 230, and the first pressing plate 240, the second pressing plate 250 and the metal partition 210 are all made of 304 stainless steel or 316 stainless steel or other food-grade stainless steel. The parallel heat exchanger 200 of this embodiment only comprises two clamp plates and a plurality of heat exchange unit of setting between two clamp plates for let in the entry and the export of two adjacent water courses of the same kind of water communicate respectively, realize parallelly connected of water course, when realizing the hot water cooling, increased water route circulation area and shortened the distance between heat exchanger 200 cold water entry to the warm water export, flow resistance is less, be favorable to promoting heat exchanger 200's play water efficiency and the life of extension equipment.
Referring to fig. 10, the electronic control system 300 includes a main control circuit 310 having a main control chip 311, and a switch circuit 320 and a power supply circuit 330 electrically connected to the main control chip 311, wherein the main control chip 311 is electrically connected to the temperature sensors 113 of the respective sub-heaters to receive temperature signals sent by the temperature sensors 113, the power supply circuit 330 includes a voltage input circuit 331 electrically connected to an external power source, a transformer circuit 332 and an opto-coupler circuit 333 connected to the voltage input circuit 331, a voltage processor 334 connected to the transformer circuit 332 and the opto-coupler circuit 333, and a rectifier circuit 335 connected to the voltage processor 334 and the transformer circuit 332, the transformer circuit 332 is configured to convert an external domestic voltage into a safe voltage suitable for the circuit of the warm water boiler 10, the opto-coupler circuit 333 is configured to filter an input voltage, and the voltage processor 334 is configured to perform an operation process on the converted and filtered voltage, the rectifying circuit 335 is used to convert the alternating current into a direct current that can be delivered to the heating body 112. The output end of the rectifying circuit 335 is connected to the heating body 112 of each sub-heater to provide voltage, and the main control chip 311 is connected to the rectifying circuit 335 for controlling the voltage value output by the rectifying circuit 335 to the heating body 112 to adjust the heating temperature of different heating bodies 112. It should be noted that, in the present embodiment, the main control chip 311 further calculates the cold water preheating temperature according to the voltage value and the power, and calculates the output warm water temperature according to the thermodynamic law, so as to obtain a functional relationship between the voltage value and the warm water outlet temperature, and thus, in the control process of the warm water machine 10, a user only needs to input a level signal associated with the warm water outlet temperature to the main control chip 311, and can drive the main control chip 311 to control the voltage value of the heating body 112, so as to achieve the purpose of controlling the outlet water temperature.
Referring to fig. 11 to 18, the electronic control system 300 further includes a zero-cross detection circuit 340 electrically connected to the main control chip 311 and provided with an optical coupler, and a communication circuit 350 electrically connected to the main control chip 311 and having a communication serial port, the main control chip 311 is communicatively connected to an external control terminal through the communication serial port, the warm water machine 10 further includes a water pump 400 electrically connected to the main control chip 311, the water pump 400 is configured to store normal-temperature water input from an external water pipe or tank and deliver cold water to a sub-heater connected to an input end of the cold water channel 220 at a predetermined flow rate under the control of the main control chip 311, an output end of the water pump 400 and an output end of the hot water channel 230 are respectively provided with an NTC temperature sensing device, and the two NTC temperature sensing devices. Specifically, the main control chip 311 is an IC chip with a model of SOP28, wherein pins 7 and 10 of the main control chip 311 are connected to the water outlet NTC temperature sensing device and the water inlet NTC temperature sensing device, pins 8 and 9 of the main control chip 311 are connected to the input and output of the water pump 400 circuit, and pins 16 and 18 of the main control chip 311 are connected to the Rxd pin and the Txd pin of the communication circuit 350, so that the main control chip 311 can use a communication protocol through the communication circuit 350, for example, the serial port based on RS232 is connected to an external controller. Certainly, the electronic control system 300 of this embodiment may further include a bluetooth module or/and a wireless signal receiver electrically connected to the main control chip 311, so that a signal may be sent to the main control chip 311 through an intelligent mobile device with a bluetooth transceiving function or a remote controller with a wireless signal sending function, and the like, so as to implement remote control of the warm water machine 10. The pin No. 28 of the main control chip 311 is connected to the zero-crossing detection circuit 340, and the zero-crossing detection circuit 340 is connected to determine the frequency and the voltage inversion point, i.e., the zero crossing point, of the single-phase ac power supply, so as to implement voltage zero driving or power control, thereby increasing the adjustment range of the main control chip 311 on the voltage value of the heating body 112 and improving the reliability of the operation of the electronic control system 300. The switch circuit 320 is provided with an integrated circuit IC having a model number AP2301/SOT23-5 and connected to the main control chip 311, and a switch connected to the integrated circuit IC, so as to manually input a command to control the voltage value of the heating body 112 by the main control chip 311.
Further, in an embodiment, the electronic control system 300 further includes a control panel electrically connected to the main control chip 311, and configured to input a temperature control instruction and display the water inlet temperature of the warm water machine 10, the warm water outlet temperature, and the flow information of the water pump 400. Preferably, the control panel is a touch display screen, so that when the touch display screen receives an external control signal, the current working parameters of the warm water boiler 10 can be read in real time, and the temperature of warm water can be accurately adjusted.
In addition, the invention also discloses a milk frothing machine comprising the warm water boiling machine 10, wherein the water outlet 124 of the milk frothing machine is the output end of the hot water channel 230 of the heat exchanger 200 of the warm water boiling machine 10, so that a user can accurately control the water outlet temperature of the milk frothing machine to a preset value by inputting a control instruction to the main control chip 311 of the milk frothing machine, the output warm water temperature meets the requirement of the warm water for milk frothing, the problem of nutrient substance loss of milk powder caused by overhigh temperature of the hot water for milk frothing is avoided, and the quality and the reliability of the milk frothing machine are improved.
According to the warm water boiling machine 10 and the milk frothing machine which can accurately adjust the temperature, cold water entering the cold water channel 220 of the heat exchanger 200 is preheated by arranging the sectional control heater 100, so that the water in the cold water channel 220 is heated to the preset temperature and then exchanges heat with hot water in the hot water channel 230, therefore, a user can control the voltage of the heating body 112 in the sub-heater for preheating the cold water in the sectional control heater 100 according to needs, the temperature of warm water output by the heat exchanger 200 can reach an expected arbitrary value, the use requirements of the user on the warm water in different areas, different seasons and different use scenes can be met, the water temperature of the warm water boiling machine 10 is controlled simply, the water outlet temperature can be accurately adjusted, and the reliability and market competitiveness of the quality of the warm water boiling machine 10 and the milk frothing machine are improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A warm water machine capable of accurately adjusting temperature is characterized by comprising:
the segmented control heater comprises a heating substrate and a water passing piece which is matched with the heating substrate and forms a plurality of sub-heaters, a plurality of heating zones are arranged on the heating substrate at intervals, and a heating body which generates heat when power is connected and a temperature sensor for detecting water temperature are respectively arranged on each heating zone; a plurality of water passing areas which correspond to the heating areas one by one are arranged on the water passing piece at intervals, an independent continuous water channel is arranged on the surface of each water passing area, a water inlet and a water outlet which are communicated with the continuous water channels are formed in the two ends of the water passing piece corresponding to each continuous water channel respectively, the water inlet of one of the sub-heaters is used for receiving cold water from the outside, one side wall surface of the heating substrate, which is back to the heating body, is matched with the continuous water channels to form a plurality of closed water channels, and a sealing structure is arranged between every two adjacent closed water channels;
the heat exchanger comprises at least one heat exchange unit consisting of a separation plate, and a cold water channel and a hot water channel which are formed on two sides of the separation plate, wherein the input end of the cold water channel is communicated with the water outlet of a sub-heater connected with water to be heated so as to be connected with preheated cold water, the output end of the cold water channel is communicated with the water inlet of another sub-heater so as to provide a heating water source, the input end of the hot water channel is communicated with the water outlet of the sub-heater connected with the output end of the cold water channel so as to be connected with boiled water, the boiled water in the hot water channel exchanges heat with the cold water in the cold water channel through the separation plate, and the output end of the hot water;
an electric control system, which comprises a main control circuit with a main control chip, a switch circuit and a power supply circuit, wherein the switch circuit and the power supply circuit are electrically connected with the main control chip, the main control chip is respectively electrically connected with the temperature sensors of the sub-heaters to receive temperature signals sent by the temperature sensors, the power supply circuit comprises a voltage input circuit electrically connected with an external power supply, a voltage transformation circuit and an optical coupling circuit which are connected with the voltage input circuit, a voltage processor connected with the voltage transformation circuit and the optical coupling circuit, and a rectification circuit connected with the voltage processor and the voltage transformation circuit, the output end of the rectifying circuit is respectively connected with the heating bodies of the sub-heaters to provide voltage, and the main control chip is used for controlling the voltage value output to the heating bodies by the rectifying circuit so as to adjust the heating temperatures of different heating bodies.
2. The warm water machine according to claim 1, characterized in that the electric control system further comprises a zero-crossing detection circuit electrically connected with the main control chip and provided with an optical coupler.
3. The warm water machine according to claim 2, characterized in that the electronic control system further comprises a communication circuit electrically connected with the main control chip and having a communication serial port, and the main control chip is in communication connection with an external control terminal through the communication serial port.
4. The warm water boiler according to claim 3, further comprising a water pump electrically connected to the main control chip, the water pump being configured to store normal temperature water input from an external water pipe or a water tank and to supply cold water to the sub-heater connected to the input end of the cold water channel at a predetermined flow rate under the control of the main control chip.
5. The warm water boiler according to claim 4, wherein the output end of the water pump and the output end of the hot water channel are respectively provided with an NTC temperature sensing device, and the two NTC temperature sensing devices are respectively electrically connected with the main control chip.
6. The warm water boiler according to claim 5, wherein the electric control system further comprises a control panel electrically connected to the main control chip for inputting a temperature control command and displaying the inlet water temperature, the outlet water temperature and the flow information of the water pump of the warm water boiler.
7. The warm water machine according to claim 1, wherein the heating substrate is made of quartz material, food-grade stainless steel material or ceramic material, and the heating body is thick film paste coated on the heating substrate, graphene or resistance wire wound on the heating substrate.
8. The warm water machine according to claim 1, wherein the heating base body and the water passing member are both in a plate-shaped structure or a circular tubular structure or in a cylindrical structure and a circular tubular structure which are matched with each other, when the heating base body is in the circular tubular structure and the water passing member is in the cylindrical structure, the heating base body is positioned on the outer layer of the segment control heater, and the water passing member is positioned on the core part of the segment control heater; when the heating base body and the water passing piece are both in a round tubular structure, the heating base body is positioned in the core part of the sectional control heater, and the water passing piece is positioned on the outer layer of the sectional control heater.
9. The warm water machine according to claim 1, wherein a plurality of heat exchange units are stacked, a metal partition plate capable of conducting heat is disposed between two adjacent heat exchange units, an input end of a cold water channel of each heat exchange unit is communicated and is introduced with preheated cold water by a sub-heater connected to water to be heated, an output end of the cold water channel of each heat exchange unit is communicated and is communicated with a water inlet of another sub-heater, an input end of a hot water channel of each heat exchange unit is communicated with the sub-heater connected to the output end of the cold water channel to be heated to be connected with boiled water, and an output end of the hot water channel of each heat exchange unit is communicated to output direct-drinking warm water.
10. A milk frothing machine characterized by comprising the warm water boiling machine according to any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110100626.XA CN112690658A (en) | 2021-01-26 | 2021-01-26 | Warm water machine and milk machine of makeing that can accurate temperature adjustment |
| PCT/CN2021/131742 WO2022160882A1 (en) | 2021-01-26 | 2021-11-19 | Warm boiled water machine able to perform precise temperature adjustment, and milk brewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110100626.XA CN112690658A (en) | 2021-01-26 | 2021-01-26 | Warm water machine and milk machine of makeing that can accurate temperature adjustment |
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| Publication Number | Publication Date |
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| CN112690658A true CN112690658A (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110100626.XA Pending CN112690658A (en) | 2021-01-26 | 2021-01-26 | Warm water machine and milk machine of makeing that can accurate temperature adjustment |
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| Country | Link |
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| CN (1) | CN112690658A (en) |
| WO (1) | WO2022160882A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022160882A1 (en) * | 2021-01-26 | 2022-08-04 | 深圳市米惜智能电器科技有限公司 | Warm boiled water machine able to perform precise temperature adjustment, and milk brewing machine |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102125394B (en) * | 2011-01-25 | 2012-10-17 | 李韧 | Multifunctional preheating water dispenser |
| US20130025309A1 (en) * | 2011-07-27 | 2013-01-31 | Shih-Kun Huang | Energy-saving hot water-heating device and system applicable to the same |
| CN103479220B (en) * | 2012-06-15 | 2016-08-03 | 滁州富达机械电子有限公司 | A kind of water dispenser |
| CN104887077B (en) * | 2015-06-19 | 2017-11-07 | 郑州轻工业学院 | A kind of air energy drinking machine |
| CN105078245A (en) * | 2015-08-25 | 2015-11-25 | 佛山市顺德区畅联万方科技管理有限公司 | Flowing heating type warm and boiled water device |
| CN105167604A (en) * | 2015-11-06 | 2015-12-23 | 东莞凌智电子科技有限公司 | Intelligent milk-brewing purifying water dispenser |
| CN208658858U (en) * | 2017-10-31 | 2019-03-29 | 广东碧丽饮水设备有限公司 | Rush the fixed warm mother and baby's machine of milk |
| CN112690658A (en) * | 2021-01-26 | 2021-04-23 | 深圳市米惜智能电器科技有限公司 | Warm water machine and milk machine of makeing that can accurate temperature adjustment |
-
2021
- 2021-01-26 CN CN202110100626.XA patent/CN112690658A/en active Pending
- 2021-11-19 WO PCT/CN2021/131742 patent/WO2022160882A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022160882A1 (en) * | 2021-01-26 | 2022-08-04 | 深圳市米惜智能电器科技有限公司 | Warm boiled water machine able to perform precise temperature adjustment, and milk brewing machine |
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| Publication number | Publication date |
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| WO2022160882A1 (en) | 2022-08-04 |
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