CN210408091U - Energy-saving instant-heating and instant-cooling temperature-adjusting water dispenser - Google Patents

Abstract

The utility model discloses an energy-saving instant heating and cooling temperature-adjusting water dispenser, which comprises a heating device, a control processor and the like; connecting a water inlet with a tap water pipe, heating water to 100 ℃, dividing the generated boiled water into two paths, and enabling one path to flow out from a high-temperature water outlet end; the other path of hot water flowing through the preheater exchanges heat with cold water to realize temperature reduction to warm boiled water, and then enters the refrigerating unit to be refrigerated to 5 ℃. When a user sets the temperature and the water yield of a single water outlet within an effective range, the control processor automatically matches a corresponding working mode and accurately outputs the water yield and the temperature of the single water outlet according to the setting of the user. The utility model discloses need not retaining storehouse, through heating device, pre-heater and refrigerating unit's organic combination, realize the drinking water of single output at 5 ~ 100 ℃'s temperature, 150 ~ 2000 ml's capacity scope to and 1 ~ 3 minutes boil the duration in adjustable, can satisfy the individualized healthy drinking water demand of people, convenient to use just can reduce the energy consumption.

Description

Energy-saving instant-heating and instant-cooling temperature-adjusting water dispenser

Technical Field

The utility model belongs to the technical field of water dispenser and energy-conservation, especially, relate to an energy-saving instant heating fast cooling temperature-adjusting water dispenser of water source.

Background

At present, water dispensers are mainly divided into two types of purified water sources and tap water sources, wherein the purified water can be drunk without boiling, the tap water can be drunk after being continuously boiled and sterilized for a period of time, and the drinking water dispensers especially pay attention to the consumption habits of Chinese people.

In daily life, when people use tap water to boil water for drinking, the following error regions are frequently found: firstly, the fire is immediately turned off when the water is boiled; secondly, the water is boiled and then is boiled for a long time; thirdly, the water is boiled and then is boiled for a few minutes by covering the kettle cover. The drinking water thus prepared is not the most beneficial to the health of people. The correct method is as follows: when the water is boiled quickly (80-90 ℃), the cover is opened, the water is boiled for two or three minutes, and then the fire is extinguished, so that volatile organic pollutants in the water are volatilized to the maximum extent. If the water is boiled for too long, the water is aged and harmful substances are formed. The heating time of the existing water dispenser is always 24 hours continuously, the heating times and the boiling time of water output each time cannot be accurately controlled, and the water provided by the existing water dispenser is not most beneficial to the health of a human body.

The existing water dispensers in most families and offices have the water outlet temperature of cold and hot, the water dispensers at the high ends have three temperatures of refrigeration, normal temperature and normal open, but the water dispensers cannot be controlled to be any temperature between cold water and boiled water, meanwhile, water in all water storage bins is heated or refrigerated, the capacity and the temperature of water output once cannot be precisely heated or refrigerated, and therefore, the increasingly high-requirement life of people cannot be met, for example, the temperatures of drinking water required by making milk powder, making green tea and making coffee are respectively 50 ℃, 80 ℃ and 90 ℃, which cannot be achieved by most of the water dispensers.

In order to solve the above problems, some temperature-adjustable water dispensers are provided in the prior art, such as an instant heating temperature-adjustable water dispenser disclosed in chinese patent publication No. CN102389262, which can heat the temperature of the outlet water to a desired temperature in a short time, but only can use pure drinking water as a drinking water source, and has a high cost for a long time. Also, as disclosed in chinese patent publication No. CN205493559, a rapid cooling water dispenser directly and rapidly cools boiled water to a desired temperature by using a refrigeration device including a refrigeration chip or a compression refrigeration machine, which consumes a large amount of electric energy without an energy saving effect, and is also provided with a boiled water container, which also has a risk of breeding bacteria and polluting drinking water when water is not changed for a long time.

For the use crowds such as offices, families, coffee shops and the like or the occasions with fixed use habits, people have strong personalized requirements and repeatability of operation on the capacity and the temperature of single output of the water dispenser, for example, the temperatures required for making milk powder, making green tea and making coffee are respectively 50 ℃, 80 ℃ and 90 ℃, and the capacity of single output is generally 150-500 ml. However, the prior art water dispenser does not consider the volume and temperature of single output water and the problem that the water dispenser is most suitable for human health.

Therefore, tap water is used as a water source, the individualized water capacity required by a user and output once is accurately matched with the temperature, the output drinking water is most suitable for human health, and meanwhile, high efficiency and cleanness can be realized while energy conservation is also realized, so that the drinking water dispenser is not available in the prior art.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the existing water dispenser, the utility model provides an energy-saving instant heating and cooling temperature-adjusting water dispenser, which uses tap water as a water source to ensure that the individualized water capacity required by a user and the temperature are accurately matched, so that the outputted water is most suitable for the health of human body, realizes high efficiency and cleanness, saves energy, and does not need to be provided with water storage cabins such as a water storage tank or a boiled water container to overcome the bacterial breeding; after entering the pipeline of the water dispenser, tap water can reach preset single individualized outlet water temperature and capacity through internal heat exchange in a short time, and the outlet water is clean and healthy, accurate in temperature and flow and obvious in energy-saving effect.

The utility model discloses a realize above-mentioned purpose case, the technical scheme who provides as follows:

an energy-saving instant-heating and instant-cooling temperature-adjusting water dispenser is characterized by comprising:

a water dispenser casing, is equipped with in the casing: the system comprises a control processor, a water inlet, a plurality of water outlets, a water filter, a preheater, a flowmeter, a heating device, an evaporator, a compressor, an air-cooled condenser, an expansion valve, a manual valve F, an electric valve FD, an electromagnetic valve FC and a temperature sensor W, wherein the control processor is connected with the water inlet and the water outlets;

wherein the water inlet is connected with a tap water pipe and then is sequentially connected with a water filter, a preheater, a flowmeter and a heating device through pipelines;

the heating device can heat water to 100 ℃, and water vapor generated in the process is discharged from the discharge port through a discharge valve FC 2; boiled water is divided into two paths, one path of boiled water flows out from the high-temperature water outlet end, and high-temperature boiled water is directly provided for users;

the other path of the cold water flows through a hot water side flow passage of the preheater and exchanges heat with the cold water of the cold water side flow passage to realize temperature reduction and simultaneously heat the cold water to form warm boiled water; warm boiled water from the preheater enters an evaporative cooler and is cooled to 5 ℃ by a refrigerating unit consisting of the evaporative cooler, a compressor, an air-cooled condenser and an expansion valve;

when a user sets a single water outlet temperature and a single water outlet quantity in an effective range, the control processor controls the opening degree and the opening and closing time of the electric valve FD1 according to the single water outlet temperature and the single water outlet quantity set by the user and a built-in program, so that the accumulated flow measured by the flow meter is a corresponding preset flow, and tap water can be boiled and continuously set for a time when flowing through the heating device;

under the condition that the length and the power of a heating device pipeline are determined, the control processor controls the opening degree and the opening time of the electric valve FD1 according to preset temperature and flow values, so that the volume of water flowing into the heating device for boiling is set to be the set water outlet amount, and the drinking water output at a single time can be adjusted within the temperature of 5-100 ℃, the volume range of 150-2000 ml and the boiling duration time of 1-3 minutes through the organic combination of the heating device, the preheater and the refrigerating unit.

The utility model has the advantages that:

the energy-saving instant heating and cooling temperature-adjusting water dispenser provided by the utility model adopts tap water as a water source, is convenient to use and has low cost; the utility model adopts instant heating and cooling temperature adjustment, and completes direct boiling and temperature adjustment of drinking water through pipelines without arranging a special water storage bin; the utility model can make the tap water quantitatively flow into the drinking machine according to the requirement, accurately adjust the temperature after heating and boiling, and directly output, thereby avoiding the water from being retained in the pipeline; the utility model can realize the adjustment of drinking water with single output at 5-100 ℃ and 150-2000 ml capacity by the organic combination of the control processor, the heating device, the preheater and the refrigerating unit, and can fully meet the individual drinking water demand of people; the utility model discloses under the condition that heating device pipeline length and power are confirmed, temperature and flow value are predetermine according to the user to the control treater, and control motorised valve FD 1's opening degree and opening time can make the capacity of the water that single inflow heating device boiled for setting for the water yield, and the speed of rivers can realize adjustable in the boiling duration to rivers 1 ~ 3 minutes in the pipeline in the rethread control pipeline. The utility model discloses a set up the pre-heater and carry out recycle to the waste heat, can reduce the energy consumption of heating device and refrigerator simultaneously, realize energy saving and emission reduction.

The utility model provides an energy-saving instant heating fast cold water dispenser makes the running water after getting into the water dispenser pipeline, can reach the individualized temperature of leaving water of preset single through the inside heat exchange of pipeline in the short time, when capacity and continuously boil, and it is clean, accurate, energy-conserving effect is obvious to go out the water, can satisfy under the use crowd such as office, family and coffee shop or the comparatively fixed occasion of use habit, people are to the capacity of water dispenser single output, the temperature, healthy, clear individualized drinking water demand.

Drawings

FIG. 1 is a schematic diagram of the overall principle structure of the present invention;

FIG. 2 is a schematic view of the module structure of the present invention;

FIG. 3 is a schematic control flow diagram of the temperature adjusting method of the present invention;

FIG. 4 is a schematic structural view of a preheater according to the present invention;

fig. 5 is a schematic structural diagram of the evaporative cooler of the present invention.

In the figure: 1. a water inlet; 2. a water filter; 4. a flow meter; 5. a heating device; 6. An exhaust port; 7. an evaporator; 8. a compressor; 9. an air-cooled condenser; 10. an expansion valve; 11. A high-temperature water outlet; 12. a medium temperature water outlet; 32. a cold water outlet; F1-F3, manual valve; FD and an electric valve; FC1-FC2, solenoid valve; w, a temperature sensor; 3. a preheater; 33. a hot water inlet end; 34. a hot water outlet; 31. a cold water inlet end; 32. a cold water outlet; 7. An evaporative cooler; 71. an inflow port; 72. an outflow port; 73. a refrigerant inflow port; 74. the refrigerant flows out of the port. 75. A hot water cooling coil; 76. an evaporating coil; 77. a housing; 78. and (7) an insulating layer.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example (b):

referring to fig. 1 to 5, the energy-saving instant-heating instant-cooling temperature-adjusting water dispenser provided by the embodiment includes:

a water dispenser casing, is equipped with in the casing: a control processor, a water inlet, a plurality of water outlets, a water filter 2, a preheater 3, a flowmeter 4, a heating device 5, an evaporator 7, a compressor 8, an air-cooled condenser 9, an expansion valve 10, a manual valve F, an electric valve FD, an electromagnetic valve FC and a temperature sensor W;

wherein, the water inlet 1 is connected with a tap water pipe and then is sequentially connected with a water filter 2, a preheater 3, a flowmeter 4 and a heating device 5 through pipelines;

the heating device 5 can heat water to 100 ℃, and water vapor generated in the process is discharged from the discharge port 6 through a discharge valve FC 2; boiled water is divided into two paths, one path of boiled water flows out from the high-temperature water outlet end 11, and high-temperature boiled water is directly provided for users;

the other path of the water flows through a hot water side flow passage of the preheater 3, and exchanges heat with cold water in a cold water side flow passage to realize temperature reduction and simultaneously heat the cold water to form warm boiled water; warm boiled water from the preheater 3 enters an evaporative cooler 7 and is cooled to 5 ℃ by a refrigerating unit consisting of the evaporative cooler 7, a compressor 8, an air-cooled condenser 9 and an expansion valve 10;

when a user sets a single water outlet temperature and a single water outlet quantity in an effective range, the control processor controls the opening degree and the opening and closing time of the electric valve FD1 according to the single water outlet temperature and the single water outlet quantity set by the user and a built-in program, so that the accumulated flow measured by the flow meter 4 is a corresponding preset flow, and tap water can be boiled and continuously set for a time when flowing through the heating device 5;

under the condition that the length and the power of a heating device pipeline are determined, the control processor controls the opening degree and the opening time of the electric valve FD1 according to preset temperature and flow values, so that the volume of water flowing into the heating device 5 for boiling is set to be the set water outlet amount, and the drinking water output at a single time can be adjusted within the temperature of 5-100 ℃, the volume range of 150-2000 ml and the boiling duration time of 1-3 minutes through the organic combination of the heating device 5, the preheater 3 and the refrigerating unit.

The preheater 3 consists of a spiral coil and a shell, boiled water flows into the spiral coil from a hot water inlet end 33 and flows out from a hot water outlet end 34, so that the boiled water can be ensured to completely flow out of a flow channel under the action of gravity; cold water enters through a cold water inlet port 31 and exits through a cold water outlet port 32.

The evaporative cooler 7 is a closed space formed by a hot water cooling coil 75, an evaporative coil 76, a shell 77 and a heat insulation layer 78, and nitrogen or dry air is filled in the closed space; hot water flows into the hot water cooling coil 75 from port 71 and out port 72, and the refrigeration unit refrigerant enters the evaporator coil 76 from port 73 and out port 74.

The water dispenser shell on be equipped with 4 temperature and set for shortcut button and 4 capacity and set for shortcut button and 1 and continue boiling time and set for shortcut button to make things convenient for the user to set for single temperature, water yield, the time of continuously boiling in effective range. Each shortcut button can be customized, the user can set 3 temperature buttons and 3 capacity buttons as common buttons according to habits, and the rest 1 temperature button and 1 capacity button can be set or changed according to actual needs. When a user presses a certain temperature button and a certain volume button and manually opens the valve F2 or F3, the water dispenser is triggered to start a working switch, the corresponding working mode of the water dispenser is started, and drinking water with single corresponding temperature, corresponding volume and set continuous boiling time is output.

The water dispenser has three working modes, the control processor automatically matches according to the flow and the output temperature set by a user, and controls each part to operate as follows:

(1) and (3) a high-temperature boiled water output mode: the heating device 5 is enabled to work, the preheater 3 does not exchange heat, and the refrigerating unit does not work;

(2) medium-high temperature boiled water output mode: the heating device 5 is enabled to work, the preheater 3 exchanges heat, and the refrigerating unit does not work;

(3) and (3) medium and low temperature boiled water output mode: the heating device 5 works, the preheater 3 exchanges heat, and the refrigerating unit works.

The specific working steps in each working mode are as follows:

and (3) a high-temperature boiled water output mode: when the user sets the water outlet temperature Wc to 100 ℃ by using the temperature button and sets the water outlet quantity Lc1 by using the capacity button, the temperature button and the capacity button are pressed, the water dispenser is triggered to start working when the valve F2 is manually opened, the control processor is automatically matched with a high-temperature boiled water output mode to be started, and the control processor enables the heating device 5 to work according to the single water outlet temperature and the water outlet quantity set by the user: under the condition that the length and the power of the heating device pipeline are determined, the opening degree and the opening and closing time of the electric valve FD1 are controlled according to a built-in program, so that the accumulated flow measured by the flow meter 4 is a corresponding preset flow Lc1, the running water can be boiled and continuously set for a set time when flowing through the heating device 5, and the capacity is a set water outlet Lc 1; meanwhile, the exhaust valve FC2 is opened, the electromagnetic three-way valve FC1 opens a valve leading to the high-temperature water outlet end 11 of the water dispenser and closes a valve leading to the low-temperature water outlet end 12 of the water dispenser, and at the moment, the refrigerating unit does not work; the boiled water flows out from the high-temperature water outlet end 11 of the water dispenser; after the electric valve FD1 is closed, the exhaust valve FC2 is closed after delaying to a set time; during the period, because the exhaust valve FC2 is in the open state, the boiled water flow passage in the heating device 5 is communicated with the atmosphere, and the boiled water in the boiled water flow passage completely flows out under the action of gravity, so that the situation that the boiled water is retained in the flow passage to cause bacteria breeding is avoided, and meanwhile, the temperature and the flow of the next effluent are prevented from being influenced.

A medium-high temperature water boiling mode: when the user sets the water outlet temperature to be more than or equal to 65 ℃ and less than Wc < 100 ℃ through the temperature button and sets the water outlet quantity to be Lc2 through the capacity button, the temperature button and the capacity button are pressed, the valve F3 is manually opened to touch a switch for starting the operation of the water dispenser, the medium-high temperature water boiling mode is started, and the control processor enables the heating device 5 to work according to the water outlet temperature and the water outlet quantity Lc2 set by the user: under the condition that the length and the power of the heating device pipeline are determined, controlling the opening degree and the opening and closing time of the electric valve FD1 according to a built-in program to enable the accumulated flow measured by the flow meter 4 to be the corresponding preset flow Lc2 so as to ensure that tap water can be boiled and continuously set for a period of time when flowing through the heating device 5; meanwhile, the exhaust valve FC2 is opened, the electromagnetic three-way valve FC1 opens a valve leading to the low-temperature water outlet end 12 of the water dispenser and closes a valve leading to the high-temperature water outlet end 11 of the water dispenser, so that the refrigerating unit does not work; boiled water flows through a hot water flow passage of a heat exchanger 3, the temperature of the boiled water is reduced to a set water outlet temperature after heat exchange with cold water in a cold water flow passage to form warm boiled water, and the warm boiled water flows through an evaporative cooler 7 and flows out from a low-temperature water outlet end 12 of the water dispenser; after the electric valve FD1 is closed, the exhaust valve FC2 is closed after delaying to a set time; during the period, because the exhaust valve FC2 is in the open state, the boiled water flow passage in the heating device 5 is communicated with the atmosphere, and the water in the boiled water flow passage completely flows out under the action of gravity, so that the water is prevented from being retained in the flow passage to breed bacteria, and the temperature and the flow of the next effluent are prevented from being influenced.

Tests show that when the temperature set by a user is 65 ℃, the preheater 3 can achieve the maximum heat exchange amount corresponding to different water yields, the energy-saving effect is the best, and meanwhile, the drinking water with the output temperature of 65 ℃ is the most frequently used drinking water temperature for people.

Medium and low temperature boiling water mode: when the temperature is set to be more than or equal to 5 ℃ and less than 65 ℃ by a user through the temperature button and the water yield is set to be Lc3 by the capacity button, the temperature button and the capacity button are pressed, the water dispenser is triggered to start working when the valve F3 is manually opened, the medium-low temperature water boiling mode is started, and the control processor enables the heating device 5 to work according to the water yield and the water yield Lc3 set by the user: under the condition that the length and the power of the heating device pipeline are determined, the control processor controls the opening degree and the opening and closing time of the electric valve FD1 according to the water outlet temperature and the water outlet quantity set by a user and a program, so that the flow measured by the flow meter 4 is the corresponding preset flow Lc3, and the running water can be boiled and continuously set for a period of time when flowing through the heating device 5; meanwhile, the exhaust valve FC2 is opened, the electromagnetic three-way valve FC1 opens a valve leading to the low-temperature water outlet end 12 of the water dispenser and closes a valve leading to the high-temperature water outlet end 11 of the water dispenser, so that the refrigerating unit works, the power of a refrigerating compressor is changed by the refrigerating unit through a frequency conversion technology, different refrigerating capacities are realized, and the water outlet temperature is adjustable within the range of 5-65 ℃; at the moment, boiled water flows through a hot water flow passage of the heat exchanger 3, the temperature is reduced to 65 ℃ after heat exchange with cold water of a cold water flow passage to form warm boiled water, the warm boiled water flows through the evaporative cooler 7 to be cooled to a set temperature, and then the warm boiled water flows out from a low-temperature water outlet end 12 of the water dispenser; after the electric valve FD1 is closed, the exhaust valve FC2 is closed after delaying to a set time; during the period, because the exhaust valve FC2 is in the open state, the boiled water flow passage in the heating device 5 is communicated with the atmosphere, and the water in the flow passage communicated with the boiled water flow passage completely flows out under the action of gravity, so that the water is prevented from being retained in the flow passage to breed bacteria, and the temperature and the flow of the next effluent are prevented from being influenced.

The heating device 5 consists of N +1 electrothermal film heating pipes, wherein the first N electrothermal film heating pipes are vertically arranged and are mutually connected in series, and then the first N electrothermal film heating pipes are connected in parallel with the (N + 1) th electrothermal film heating pipe, wherein N is more than or equal to 3; in the present embodiment, N is 4. Electrothermal film heating pipe be overflow formula design, make the water that gets into in every electrothermal film heating pipe all from up flowing down, the velocity of flow through the control water inlet and the total length of electrothermal film heating pipe, can control the hot-water heating time in the electrothermal film heating pipe, ensure the running water after the Nth electrothermal film heating pipe is boiled, from N +1 electrothermal film heating pipe again, continue to boil the boiling water runner that overflows again in heating device 5, the boiling water runner of rivers play under the effect of gravity, leave heating device 5, make water reach the time of continuously boiling, in order to reach disinfection and softened purpose.

In this embodiment, the heating device 5 is specifically 5 electrothermal film heating pipes with power of 600W, and the total power is 3000W, wherein the front 4 electrothermal film heating pipes are connected in parallel and then connected in series with the 5 th electrothermal film heating pipe, so that the water entering the electrothermal film heating pipes is boiled before entering the 5 th electrothermal film heating pipe, thus ensuring that the water is boiled when flowing out of the 5 th electrothermal film heating pipe.

Under the condition that the length and the power of a heating device pipeline are determined, the control processor controls the opening degree and the opening time of the electric valve FD1 according to preset temperature and flow values, so that the volume of water flowing into the heating device 5 for boiling is set water yield, and the drinking water output at a single time is adjustable within the temperature of 5-100 ℃, the volume range of 150-2000 ml and the boiling duration of 1-3 minutes through the organic combination of the heating device 5, the preheater 3 and the refrigerating unit, so that tap water is fully softened and disinfected, organic matters are effectively volatilized, and the output drinking water is most beneficial to the health of people.

The control processor of the utility model can adopt a PLC controller in the prior art, and the PLC controller is internally provided with a corresponding control program to control each part to work; each component can also select the ripe product among the prior art according to utility model effect like solenoid valve etc. the utility model discloses all no longer detail.

The above-described embodiments are merely preferred embodiments of the present invention, which are not intended to limit the present invention in any way. The invention is not limited to the embodiments described herein, but is capable of other embodiments with obvious modifications and variations, including those shown in the drawings and described herein. Therefore, the equivalent changes made according to the shape, structure and principle of the present invention should be covered in the protection scope of the present invention.

Claims (10)

1. An energy-saving instant-heating and instant-cooling temperature-adjusting water dispenser is characterized by comprising:

a water dispenser casing, is equipped with in the casing: the system comprises a control processor, a water inlet, a plurality of water outlets, a water filter, a preheater, a flowmeter, a heating device, an evaporator, a compressor, an air-cooled condenser, an expansion valve, a manual valve F, an electric valve FD, an electromagnetic valve FC and a temperature sensor W, wherein the control processor is connected with the water inlet and the water outlets;

wherein the water inlet is connected with a tap water pipe and then is sequentially connected with a water filter, a preheater, a flowmeter and a heating device through pipelines;

the heating device can heat water to 100 ℃, and water vapor generated in the process is discharged from the discharge port through a discharge valve FC 2; boiled water is divided into two paths, one path of boiled water flows out from the high-temperature water outlet end, and high-temperature boiled water is directly provided for users;

the other path of the cold water flows through a hot water side flow passage of the preheater and exchanges heat with the cold water of the cold water side flow passage to realize temperature reduction and simultaneously heat the cold water to form warm boiled water; warm boiled water from the preheater enters an evaporative cooler and is cooled to 5 ℃ by a refrigerating unit consisting of the evaporative cooler, a compressor, an air-cooled condenser and an expansion valve;

when a user sets a single water outlet temperature and a single water outlet quantity in an effective range, the control processor controls the opening degree and the opening and closing time of the electric valve FD1 according to the single water outlet temperature and the single water outlet quantity set by the user and a built-in program, so that the accumulated flow measured by the flow meter is a corresponding preset flow, and tap water can be boiled and continuously set for a time when flowing through the heating device;

under the condition that the length and the power of a heating device pipeline are determined, the control processor controls the opening degree and the opening time of the electric valve FD1 according to preset temperature and flow values, so that the volume of water flowing into the heating device for boiling is set to be the set water outlet amount, and the drinking water output at a single time can be adjusted within the temperature of 5-100 ℃, the volume range of 150-2000 ml and the boiling duration time of 1-3 minutes through the organic combination of the heating device, the preheater and the refrigerating unit.

2. The energy-saving instant-heating instant-cooling temperature-adjusting water dispenser as claimed in claim 1, wherein the preheater is composed of a spiral coil and a shell, boiled water flows into the spiral coil from a hot water inlet end and flows out from a hot water outlet end, so that the boiled water can be ensured to completely flow out of a flow channel under the action of gravity; cold water flows in from the cold water inlet end and flows out from the cold water outlet end.

3. The energy-saving instant-heating instant-cooling temperature-adjusting water dispenser as claimed in claim 1, wherein the evaporative cooler is a closed space composed of a hot water cooling coil, an evaporative coil, a shell and a heat-insulating layer, and is filled with nitrogen or dry air; hot water flows into the hot water cooling coil from the port and out of the port, and refrigerant from the refrigeration unit enters and exits the evaporator coil from the port and then exits the port.

4. The energy-saving type instant-heating and instant-cooling temperature-adjusting water dispenser according to claim 1 is characterized in that the water dispenser has three working modes, the control processor automatically matches according to the flow and the output temperature set by a user, and controls each part to do the following operations:

(1) and (3) a high-temperature boiled water output mode: the heating device works, the preheater does not exchange heat, and the refrigerating unit does not work;

(2) medium-high temperature boiled water output mode: the heating device works, the preheater exchanges heat, and the refrigerating unit does not work;

(3) and (3) medium and low temperature boiled water output mode: the heating device works, the preheater exchanges heat, and the refrigerating unit works.

5. The energy-saving instant-heating instant-cooling temperature-adjusting water dispenser according to claim 4, characterized in that the high-temperature boiled water output mode is as follows: when the user sets the water outlet temperature Wc to 100 ℃ by using the temperature button and sets the water outlet quantity Lc1 by using the capacity button, the temperature button and the capacity button are pressed, a water dispenser start working switch is triggered when a valve F2 is manually opened, the control processor is automatically matched with a high-temperature boiled water output mode to be started, and the control processor enables the heating device to work according to the single water outlet temperature and the water outlet quantity set by the user: under the condition that the length and the power of the heating device pipeline are determined, controlling the opening degree and the opening and closing time of the electric valve FD1 according to a built-in program, and enabling the accumulated flow measured by the flow meter to be a corresponding preset flow Lc1 so as to ensure that tap water can be boiled and continuously set for a set time when flowing through the heating device and the volume is a set water outlet Lc 1; meanwhile, the exhaust valve FC2 is opened, the electromagnetic three-way valve FC1 opens a valve leading to the high-temperature water outlet end of the water dispenser and closes a valve leading to the low-temperature water outlet end of the water dispenser, and at the moment, the refrigerating unit does not work; the boiled water flows out from the high-temperature water outlet end of the water dispenser; after the electric valve FD1 is closed, the exhaust valve FC2 is closed after delaying to a set time; during the period, because the exhaust valve FC2 is in the open state, the boiled water flow passage in the heating device is communicated with the atmosphere, and the boiled water in the boiled water flow passage completely flows out under the action of gravity, so that the situation that the boiled water is retained in the flow passage to cause bacteria breeding is avoided, and meanwhile, the temperature and the flow of the next effluent are prevented from being influenced.

6. The energy-saving type instant-heating and instant-cooling temperature-adjusting water dispenser according to claim 4, characterized in that the medium-high temperature boiled water output mode is as follows: when the user sets the water outlet temperature to be more than or equal to 65 ℃ and less than Wc < 100 ℃ through the temperature button and sets the water outlet quantity to be Lc2 through the capacity button, the temperature button and the capacity button are pressed, a switch for starting the operation of the water dispenser is triggered when a valve F3 is manually opened, the medium-high temperature water boiling mode is started, and the control processor enables the heating device to work according to the water outlet temperature and the water outlet quantity Lc2 set by the user: under the condition that the length and the power of the heating device pipeline are determined, controlling the opening degree and the opening and closing time of the electric valve FD1 according to a built-in program, and enabling the accumulated flow measured by the flow meter to be the corresponding preset flow Lc2 so as to ensure that tap water can be boiled and continuously set for a period of time when flowing through the heating device; meanwhile, the exhaust valve FC2 is opened, the electromagnetic three-way valve FC1 opens a valve leading to the low-temperature water outlet end of the water dispenser and closes a valve leading to the high-temperature water outlet end of the water dispenser, so that the refrigerating unit does not work; the boiled water flows through a hot water flow passage of a heat exchanger, the temperature of the boiled water is reduced to a set water outlet temperature after heat exchange with cold water in a cold water flow passage to form warm boiled water, and the warm boiled water flows through an evaporative cooler and flows out from a low-temperature water outlet end of the water dispenser; after the electric valve FD1 is closed, the exhaust valve FC2 is closed after delaying to a set time; during the period, because the exhaust valve FC2 is in the open state, the boiled water flow passage in the heating device is communicated with the atmosphere, and the water in the boiled water flow passage completely flows out under the action of gravity, so that the water is prevented from being retained in the flow passage to breed bacteria, and the temperature and the flow of the next effluent are prevented from being influenced.

7. The energy-saving instant-heating instant-cooling temperature-adjusting water dispenser according to claim 4, characterized in that the medium and low temperature boiled water output mode is as follows: when a user sets the temperature to be more than or equal to 5 ℃ and less than Wc and less than 65 ℃ through the temperature button and sets the water yield to be Lc3 through the capacity button, the temperature button and the capacity button are pressed, a water dispenser start working switch is triggered when a valve F3 is manually opened, the medium-low temperature water boiling mode is started, and the control processor enables the heating device to work according to the water yield and the water yield Lc3 set by the user: under the condition that the length and the power of the heating device pipeline are determined, the control processor controls the opening degree and the opening and closing time of the electric valve FD1 according to the water outlet temperature and the water outlet quantity set by a user and a program, so that the flow measured by the flow meter is the corresponding preset flow Lc3, and the running water can be boiled and continuously set for a time when flowing through the heating device; meanwhile, the exhaust valve FC2 is opened, the electromagnetic three-way valve FC1 opens a valve leading to the low-temperature water outlet end of the water dispenser and closes a valve leading to the high-temperature water outlet end of the water dispenser, so that the refrigerating unit works, the power of a refrigerating compressor is changed by the refrigerating unit through a frequency conversion technology, different refrigerating capacities are realized, and the water outlet temperature is adjustable within the range of 5-65 ℃; at the moment, boiled water flows through a hot water flow passage of the heat exchanger, the temperature is reduced to 65 ℃ after heat exchange with cold water in a cold water flow passage to form warm boiled water, the warm boiled water flows through the evaporative cooler to be cooled to a set temperature, and then the warm boiled water flows out from a low-temperature water outlet end of the water dispenser; after the electric valve FD1 is closed, the exhaust valve FC2 is closed after delaying to a set time; during the period, because the exhaust valve FC2 is in the open state, the boiled water flow passage in the heating device is communicated with the atmosphere, and the water in the flow passage communicated with the boiled water flow passage completely flows out under the action of gravity, so that the water is prevented from being retained in the flow passage to breed bacteria, and the temperature and the flow of the next effluent are prevented from being influenced.

8. The energy-saving instant-heating instant-cooling temperature-adjusting water dispenser as claimed in claim 1, wherein the heating device is composed of N +1 electrothermal film heating pipes, wherein the first N electrothermal film heating pipes are vertically arranged and are mutually connected in series, and then are connected in parallel with the N +1 electrothermal film heating pipes; wherein N is more than or equal to 3; electrothermal film heating pipe be overflow formula design, make and get into every electrothermal film heating pipe water all from up flowing down, the velocity of flow through the control water inlet and the total length of electrothermal film heating pipe, can control the hot-water heating time in the electrothermal film heating pipe, ensure the running water after the Nth electrothermal film heating pipe is boiled, from N +1 electrothermal film heating pipe again, continue to boil the boiling water runner that overflows again in the heating device, under the effect of gravity, the running water goes out the boiling water runner, leave heating device, make water reach the time of continuously boiling, in order to reach disinfection and softened purpose.

9. The energy-saving instant-heating instant-cooling temperature-adjusting water dispenser as claimed in claim 1, wherein under the condition that the length and power of the heating device pipeline are determined, the control processor controls the opening degree and opening time of the electric valve FD1 according to preset temperature and flow values, so that the volume of water flowing into the heating device for boiling is set as the set water outlet amount, and through the organic combination of the heating device, the preheater and the refrigerating unit, the drinking water output at a single time can be adjusted within the temperature range of 5-100 ℃, the volume range of 150-2000 ml and the boiling duration of 1-3 minutes, so that tap water is fully softened and disinfected, and organic matters are effectively volatilized.

10. The energy-saving instant-heating instant-cooling temperature-adjusting water dispenser according to claim 1, characterized in that the shell is provided with 4 temperature setting shortcut buttons, 4 capacity setting shortcut buttons and 1 boiling duration setting shortcut button, so as to facilitate the user to set the single water outlet temperature, water outlet amount and boiling duration within the effective range.

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