WO2018028116A1

WO2018028116A1 - Instant drinking water heating device

Info

Publication number: WO2018028116A1
Application number: PCT/CN2016/111862
Authority: WO
Inventors: 冯海涛
Original assignee: 冯海涛
Priority date: 2016-08-05
Filing date: 2016-12-24
Publication date: 2018-02-15
Also published as: CN106091353A; CN205878567U

Abstract

An instant drinking water heating device, comprising a water pump (1), a balance reservoir (2), a pipe heater (3) and a control chip (4). The balance reservoir (2) is connected between the water pump (1) and the pipe heater (3), and the pipe heater (3) and the water pump (1) are respectively electrically connected to the control chip (4). The heating device also comprises a heater liquid level switch (5) and a water pump liquid level switch (6); the heater liquid level switch (5) and the water pump liquid level switch (6) are respectively inserted from an upper part of the balance reservoir (2) and extend into the balance reservoir (2); the heater liquid level switch (5) and the water pump liquid level switch (6) are electrically connected with the control chip (4) respectively; the control chip (4) controls the pipe heater (3) and the water pump (1) to work by means of a liquid level sensing signal of the heater liquid level switch (5) and a liquid level sensing signal of the water pump liquid level switch (6).

Description

Instant drinking water heating device

Technical field

The invention relates to the technical field of instant water heating devices, in particular to an instant drinking water heating device.

Background technique

The instant drinking water heating device is a device that rapidly heats water and provides a required hot water when the user waits for a short time. At present, the instant drinking water heating device on the market is usually provided with a balance water tank. The bottom of the balance water tank is provided with a water inlet and a water outlet, and the water inlet is connected with the external water source through a water pump to balance the water outlet of the water tank and the pipeline heater. (For example, the device that passes through the water and is heated quickly) is connected. The bottom wall of the balance water tank is provided with a high water level float switch and a low water level float switch for detecting high and low water levels respectively; when working, the water pump will be water source Pumped into the balance tank, the water is sent to the pipeline heater through the water outlet for rapid heating for drinking; when the water level in the balance tank drops to the lowest water level, the low water level float switch is disconnected, and the pipeline heater is not working. Prevent dry burning. When the water level in the balance tank rises to the highest water level, the high water level float switch is disconnected, so that the water pump stops the water and prevents the interference.

However, the balance tank of the above structure still has the following deficiencies: (1) The guide column for sliding the high and low water level float switch is inserted into the balance water tank from the bottom wall of the balance tank, therefore, the guide column The sealing requirement through the bottom wall of the balance tank is relatively high. In actual use, it is often due to poor sealing here, which is easy to cause leakage, affecting the water level of the balance tank, thus affecting the outlet water temperature; (2) the guide column is balanced water The bottom wall of the box is inserted upwards, and the process is relatively complicated, which affects the production efficiency; (3) The pipeline heater and the water pump are directly controlled by the high and low water level float switches, and the control is single, the intelligent program is insufficient, and the user is not satisfied with the product intelligence. The requirements for automatic control.

Summary of the invention

The object of the present invention is to overcome the shortcomings of the prior art mentioned above, and to provide a simple drinking water heating structure with simple and reasonable structure, low sealing requirement, easy implementation, automatic water supply, anti-dry burning and accurate water level monitoring. Device.

The object of the invention is achieved in this way.

An instant drinking water heating device comprises a water pump, a balance water tank, a pipeline heater and a control chip, the balance water tank is connected between the water pump and the pipeline heater, and the pipeline heater and the water pump are respectively electrically connected with the control chip, and the characteristics thereof Yes, it also includes a heater liquid level switch and a water pump liquid level switch. The heater liquid level switch and the water pump liquid level switch are respectively inserted into the balance water tank from the upper part of the balance water tank, the heater liquid level switch and the water pump liquid level switch. Electrically connected to the control chip respectively, the control chip controls the operation of the pipeline heater and the water pump through the liquid level sensing signal of the heater liquid level switch and the liquid level sensing signal of the water pump liquid level switch; this is a hot drinking water heating device, Since the heater liquid level switch and the water pump liquid level switch are both inserted into the balance water tank from the upper part of the balance water tank, since the bottom of the balance water tank does not require high water tightness, The process requirements are lower, the implementation is easy, and the production efficiency is higher; in addition, the heater liquid level switch and the water pump liquid level switch respectively control the heater and the water pump through the control chip to realize the intelligent control of the product and ensure the water level in the balance water tank. When the temperature is too low, the heater can be powered off and protected from dry burning. When the water level is too high, the pump is powered off to stop the water supply and prevent over-filling. The whole process is fully automated and the water level is controlled accurately.

The above technical solutions can also be further improved as follows.

As a more specific solution, the heater liquid level switch and the water pump liquid level switch are respectively provided with a minimum liquid level sensing end, and the lowest liquid sensing end of the heater liquid level switch is lower than the lowest liquid sensing end of the water pump liquid switch by 3 mm- 30mm, the minimum liquid level sensing end of the pump is higher than the lowest liquid sensing end of the heater, which ensures that there is always a certain liquid level in the balance tank, avoiding the lack of water in the balance tank to stop the heater and causing the heater to dry.

As a more specific solution, the upper opening of the balance water tank is provided with an upper cover that can be disassembled, and the heater liquid level switch and the water pump liquid level switch are respectively inserted into the balance water tank by the upper cover, that is, the upper cover and the balance The water tank is two independent devices, which is more convenient for the installation of the liquid level switch.

As a more specific solution, the upper cover is provided with a sunken cavity, and the top of the heater liquid level switch and the water pump liquid level switch is placed in the sunken cavity; by providing a sunken cavity in the upper cover, Reserve a certain space to facilitate the placement of the heater liquid level switch and the pump liquid level switch to avoid vertical bending of the line, and to protect the position of the wire connection end of the liquid level switch.

As a more specific solution, the upper cover is provided with two high and low sinking slots, and the heater liquid level switch and the water pump liquid level switch are respectively inserted and extended by the corresponding high and low two sinking slots. Into the balance tank; the design of the high and low sinking tanks makes it easy to set the heater level switch and the pump level switch, especially the lowest liquid level sensing end of the pump and the lowest liquid sensing end of the heater. Height difference.

As a more specific solution, the heater liquid level switch and the water pump liquid level switch respectively include a guide rod, a reed switch tube and a magnetic floating ball, and the guide rod is inserted into the balance water tank from the upper part of the balance water tank and is balanced in the water tank. The rod has a reed switch inside, and the magnetic float is sleeved on the outer wall of the guide rod in a downward sliding manner, and the reed switch is closed or disconnected as a liquid level sensing signal and transmitted to the control chip. This specific liquid level switch scheme Easy to implement and precise water level control.

As a more specific solution, the guide rod is provided with a minimum limit of the magnetic float ball, and when the magnetic float ball is placed at the lowest limit position, the lowest liquid level sensing end is formed.

As a more specific solution, the balance water tank is provided with a water inlet, the heater liquid level switch and the water pump liquid level switch are disposed on the side of the vertical projection of the water inlet; the heater liquid level switch and the water pump liquid level switch are set in the inlet The side of the vertical projection of the nozzle prevents the external water source from entering the balance tank, and the water flow directly hits (impacts) the heater level switch and the pump level switch, thereby affecting the accuracy of the heater level switch and the pump level switch detection.

As a more specific solution, the balance water tank is provided with a water inlet, and a water inlet buffer device is disposed at a corresponding water inlet position in the balance water tank; and a water buffer device is disposed at the water inlet to effectively reduce or retard the flow into the water tank of the balance water tank. Water pressure, to avoid affecting the heater level switch and pump level switch position, thus affecting its water level detection accuracy.

As a more specific solution, the integrated water tank and the water outlet are connected to the balance water tank to form an integrated water tank, and the upper cover extends to the hot water area and the water outlet to form an integrated water tank upper cover, and is integrated. The non-detachable whole body is formed by hot melt between the upper cover and the integrated water tank; the design of integrating the hot water zone and the water outlet with the balance water tank is more conducive to the compactness of the overall structure of the product and reduces the overall volume thereof.

The beneficial effects of the present invention are as follows:

(1) This type of hot drinking water heating device, because the heater liquid level switch and the water pump liquid level switch are inserted into the balance water tank from the upper part of the balance water tank, because the bottom of the balance water tank does not require high water tightness, therefore, The process requirements are lower, the implementation is easy, and the production efficiency is higher; in addition, the heater liquid level switch and the water pump liquid level switch respectively control the heater and the water pump through the control chip to realize the intelligent control of the product and ensure the water level in the balance water tank. When the temperature is too low, the heater can be powered off and protected from dry burning. When the water level is too high, the pump is powered off to stop the water supply and prevent over-filling. The whole process is fully automated and the water level is controlled accurately.

(2) Further, by setting the water inlet buffer device at the water inlet position of the balance water tank, or setting the heater liquid level switch and the water pump liquid level switch on the side of the vertical projection of the water inlet, the external water source is prevented from entering the water inlet of the balance water tank. At the same time, the water flow easily hits the heater level switch and the water pump level switch, thereby affecting its water level control (accuracy of detection).

DRAWINGS

Fig. 1 is a schematic view showing an example of a hot drinking water heating device of the present invention.

2 is a schematic view showing the second embodiment of the instant drinking water heating device of the present invention.

Fig. 3 is a schematic view showing an embodiment of the balanced water tank of the present invention as an integrated water tank (with the upper cover removed).

4 is a schematic view of the integrated water tank of FIG. 3 applied to an instant drinking water heating device.

detailed description

The invention is further described below in conjunction with the drawings and embodiments.

Embodiment 1, as shown in FIG. 1, an instant drinking water heating device, comprising a balance water tank 2, an upper cover 7, a pipe heater 3, a water pump 1, a control chip 4, a heater level switch 5, and a water pump Bit switch 6.

The balance water tank 2 is provided with a water inlet 21 and a water outlet 25, and the water inlet 21 of the balance water tank 2 is in communication with the water inlet pipe 26, and the water pump 1 draws the external water source along the water inlet pipe 26 and the water inlet 21 into the balance water tank 2 The water outlet 25 of the balance water tank 2 communicates with the pipe heater 3, and the water inside the balance water tank 2 flows out along the water outlet 25 to the pipe heater 3 to be rapidly heated to boiling, and the boiling water overflows the water outlet of the pipe heater 3, and Passing through the hot water zone 23, finally through the water outlet 24 Out, for the user to drink.

The upper cover 7 is installed at the upper opening of the balance water tank 2, and the upper cover 7 is provided with a sinking groove 71, and the heater liquid level switch 5 and the water pump liquid level switch 6 are respectively sunk along the upper cover 7. The groove chamber 71 is inserted into the inside of the balance water tank 2 and extends to the side where the water inlet 21 is vertically projected.

The heater liquid level switch 5 includes a guide rod 51, a reed switch 52 and a magnetic float ball 53. The reed switch tube 52 is placed in the inner cavity of the guide rod 51, the reed switch tube 52 and the duct heater 3, and the control chip 4 Electrical connection. The guide rod 51 is provided with a water source heating minimum limit 54. The guide rod 51 is inserted into the balance water tank 2 by the upper cover 7 installed on the upper portion of the balance water tank 2, and the top of the guide rod 51 is placed on the lower cover 7 to sink. In the cavity 71. The magnetic float ball 53 is sleeved on the outer wall of the guide rod 51 so that the magnetic float ball 53 can only slide at the position above the water source heating minimum limit 54 of the guide rod 51, and the magnetic float ball 53 controls the reed switch tube by sliding mode. 52 is closed or opened, and the induced signal generated by the closing or opening of the reed switch 52 is transmitted to the control chip 4, and the control core 4 adjusts the opening or closing of the duct heater 3.

The water pump level switch 6 includes a guide rod 51, a reed switch 52 and a magnetic float 53. The reed switch 52 is placed in the inner cavity of the guide rod 51, and the reed switch 52 is electrically connected to the water pump 1 and the control chip 4. . The guiding rod 51 is provided with a water shortage minimum limit 55. The guiding rod 51 is inserted into the balance water tank 2 by the upper cover installed on the upper part of the balance water tank 2, and the top of the guiding rod 51 is placed in the sunken type of the upper cover 7. Inside the cavity 71. The magnetic floating ball 53 is sleeved on the outer wall of the guiding rod 51 so as to be slidable upward, and the magnetic floating ball 53 can only slide at the position below the water shortage minimum limit 55 of the guiding rod 51, and the magnetic floating ball 53 controls the reed switch by sliding mode. 52 is closed or opened, and the induced signal generated by the closing or opening of the reed switch 52 is transmitted to the control chip 4, and the control chip 4 regulates the opening or closing of the water pump 1.

The water source heating minimum limit 54 of the heater liquid level switch 5 is lower than the water shortage minimum limit 55 of the water pump level switch 6 by a distance of 3 mm to 30 mm, which is 10 mm in this embodiment.

When the water level of the balance water tank 2 is lower than the water shortage minimum limit 54 of the water pump hydraulic switch 5, the magnetic float ball 53 will slide to the water shortage minimum limit 54 of the water pump liquid level switch 5, and the reed switch 52 sends a water shortage signal. To the control chip 4, the control chip 4 activates the water pump 1 to perform the water supply operation of the balance water tank 2. (If the water level rises, the magnetic float ball 53 also rises, and starts to move away from the reed switch until the magnetic float ball rises to the highest limit. When the reed pipe loses the force of the magnetic float, the reed switch is de-energized and the pump stops the water to prevent interference. Meanwhile, since there is a height difference between the heater liquid level switch 5 and the water pump liquid level switch 6, when the water level of the balance water tank 2 is lower than the water shortage minimum limit 54 of the water pump hydraulic switch 5, the water level of the balance water tank 2 is still higher than The heating minimum limit 55 of the heater level switch 6 and the magnetic float 53 slide at a position above the heating lower limit 55, and the heater level switch 5 will remain in normal operation.

When the water supply fails or the water pump 1 fails, the water level in the balance water tank 2 gradually decreases after drinking hot water, and when the water level in the balance water tank 2 drops to the water source heating minimum limit 55 of the heater liquid level switch 5, Heating liquid The reed switch 52 of the pressure switch 5 sends a severe water shortage signal to the control chip 4, and the control chip 4 turns off the duct heater 3 to prevent dry burning.

Embodiment 2, in combination with FIG. 2, the difference between Embodiment 2 and Embodiment 1 is that the upper cover 7 of Embodiment 2 is provided with two high and low sinking slots 71, a heater level switch 5 and a water pump. The liquid level switch 6 is inserted into and extended into the balance water tank 2 by the corresponding two high and low sinking slots 71, and the height difference between the heater liquid level switch 5 and the water pump liquid level switch 6 is easily realized; The water inlet buffer 21 is disposed at a position corresponding to the water inlet 21 in the water tank 2, and the water buffering device 22 may be provided with a baffle or a diverter plate at the water inlet to slow the water inlet speed, avoid rapid water flow, and affect heating. The position of the liquid level switch 5 and the water pump level switch 6 is stable.

Embodiment 3, in combination with FIG. 3 and FIG. 4, the embodiment 3 is different from the embodiment 1 in that the integrated water tank 2 and the water outlet 24 are connected to the balance water tank 2 of the embodiment 3 to constitute a comprehensive Water tank 8. The upper cover 7 of the balance water tank 2 extends above the hot water zone 23 and the water outlet 24 to constitute an integrated water tank upper cover 9, and the integrated water tank upper cover 9 and the integrated water tank 8 are thermally fused to form a non-detachable whole.

Claims

Instant drinking water heating device, including water pump (1), balance water tank (2), pipeline heater (3) and control chip (4), balance water tank (2) connected to water pump (1) and pipeline heater (3) Between the pipeline heater (3) and the water pump (1) are electrically connected to the control chip (4), respectively, characterized in that it further comprises a heater liquid level switch (5) and a water pump liquid level switch (6), The heater level switch (5) and the pump level switch (6) are respectively inserted into the balance tank (2) from the upper part of the balance tank (2), the heater level switch (5) and the pump level switch ( 6) electrically connected to the control chip (4), respectively, the control chip (4) controls the pipeline heater through the liquid level sensing signal of the heater liquid level switch (5) and the liquid level sensing signal of the water pump liquid level switch (6) (3) Work with the water pump (1).
The instant drinking water heating device according to claim 1, wherein the heater liquid level switch (5) and the water pump liquid level switch (6) are respectively provided with a minimum liquid level sensing end, and the heater liquid level The lowest liquid sensing end of the switch is 3mm-30mm below the lowest liquid sensing end of the pump liquid switch.
The instant drinking water heating device according to claim 2, wherein the upper opening of the balance water tank (2) is provided with a removable upper cover (7), a heater liquid level switch (5) and a water pump. The level switch (6) is inserted into the balance tank (2) by the upper cover (7), respectively.
The instant drinking water heating device according to claim 3, wherein the upper cover (7) is provided with a sinking groove chamber (71), a heater liquid level switch (5) and a water pump liquid level switch ( The top of 6) is placed in the sinking cavity (71).
The instant drinking water heating device according to claim 3, wherein the upper cover (7) is provided with two high and low sinking slots (71), a heater level switch (5) and The water pump level switch (6) is inserted into and extended into the balance water tank (2) by the corresponding high and low two sinking slots (71).
The instant drinking water heating device according to any one of claims 1 to 5, characterized in that the heater liquid level switch (5) and the water pump liquid level switch (6) both comprise a guide rod (51) and a dry spring. The tube (52) and the magnetic float (53), the guide rod (51) is inserted into the balance water tank (2) from the upper portion of the balance water tank (2), and the guide rod (51) in the balance water tank (2) has a built-in dry The reed pipe (52), the magnetic float ball (53) is sleeved on the outer wall of the guide rod (51) in a downward sliding manner, and the reed switch tube (52) is closed or disconnected as a liquid level sensing signal and transmitted to the control chip ( 4).
The instant drinking water heating device according to claim 6, wherein the guide rod (51) is provided with a minimum limit of the magnetic floating ball (53), and the magnetic floating ball (53) is placed at the minimum limit. The position constitutes the lowest level sensing end.
The instant drinking water heating device according to claim 1, wherein the balance water tank (2) is provided with a water inlet (21), a heater liquid level switch (5) and a water pump liquid level switch (6). Set on the side of the vertical projection of the water inlet (21).
The instant drinking water heating device according to claim 1, wherein the balance water tank (2) is provided with a water inlet (21), and the corresponding water inlet (21) in the balance water tank (2) is provided with water inlet. Buffer device (22).
The instant drinking water heating device according to claim 3, wherein the integrated water tank (2) is further connected with a hot water zone (23) and a water outlet (24) of an integrated structure to form an integrated water tank ( 8) The upper cover (7) extends above the hot water zone (23) and the water outlet (24) to form an integrated water tank upper cover (9), and between the integrated water tank upper cover (9) and the integrated water tank (8) The non-detachable whole is formed by hot melt.