Single-pump temperature-adjusting water dispenser with heat recovery function

Abstract

The utility model discloses a single-pump temperature-adjusting water dispenser with a heat recovery function, and belongs to the technical field of water dispensers. Comprising a machine body, and a water inlet system, a sleeve type heat exchanger, a heat recovery system, an instant heating body, a temperature adjusting system, a boiled water outlet valve and a water outlet pipe are arranged in the machine body. The instant heating body heats drinking water to be hot boiled water with the temperature of 90 DEG C or above, one water outlet end of the instant heating body is communicated with the water inlet end of the boiled water outlet valve, hot boiled water with the temperature of 90 DEG C or above flows out of the boiled water outlet valve to the water receiving nozzle, and the other water outlet end of the instant heating body is communicated with an inner sleeve water inlet of the sleeve type heat exchanger. Hot boiled water can flow into an inner sleeve of the sleeve type heat exchanger from the water outlet end to be cooled into cold boiled water, the heat recovery system recycles heat of the hot boiled water in the process that the hot boiled water is cooled into the cold boiled water, and the temperature adjusting system mixes the cold boiled water and the hot boiled water in proportion according to the water temperature set by a user and conveys the cold boiled water and the hot boiled water to the water outlet pipe. And accurate regulation and control of the water temperature are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of water dispensers, in particular to a single-pump temperature-regulating water dispenser with a heat recovery function. Background Art

[0002] Generally, water dispensers only have two water supply modes, hot water and cold water, and do not have the function of arbitrarily adjusting the water temperature. Therefore, temperature-adjustable water dispensers have emerged. For example, Chinese patent publication number CN103431768A discloses a temperature-adjustable water dispenser with independently arranged heating chamber and warm water chamber. When the warm water chamber is empty, the hot water in the heating chamber enters the warm water chamber, where the hot water is cooled to form warm water. When the warm water outlet is opened, warm water can be supplied, avoiding drinking bottled water directly and causing physical discomfort due to water quality problems.

[0003] The warm water of this water dispenser is formed by the natural cooling of hot water in the warm water chamber. The hot water just added to the warm water chamber needs a certain cooling time to become warm water, and warm water cannot be obtained immediately. Especially when making milk powder for the baby at night, the baby's crying during the waiting time will disturb the rest of the family members at home. In addition, the heat is dissipated into the surrounding environment during the cooling process of hot water, which not only causes heat waste but also increases the temperature of the surrounding environment. Utility Model Content

[0004] The purpose of the utility model is to provide a single-pump temperature-adjustable water dispenser with a heat recovery function, so as to solve the problem that the existing temperature-adjustable water dispensers have a slow efficiency in obtaining warm water and do not have a heat recovery function.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A single-pump temperature-controlled water dispenser with a heat recovery function comprises a water inlet system, a sleeve heat exchanger, a heat recovery system, an instant heating body, a temperature control system, a boiling water outlet valve and a water outlet pipe; the water outlet end of the water inlet system is connected to the outer sleeve water inlet of the sleeve heat exchanger, the outer sleeve water outlet of the sleeve heat exchanger is connected to the water inlet end of the heat recovery system, the water outlet end of the heat recovery system is connected to the water inlet end of the instant heating body, one water outlet end of the instant heating body is connected to the water inlet end of the boiling water outlet valve, the water outlet end of the boiling water outlet valve is connected to the water outlet pipe, the other water outlet end of the instant heating body is connected to the inner sleeve water inlet of the sleeve heat exchanger, the inner sleeve water outlet of the sleeve heat exchanger is connected to the water inlet end of the temperature control system, and the water outlet end of the temperature control system is also connected to the water outlet pipe.

[0007] As a further solution of the present invention: the water inlet system includes a water tank, a water inlet solenoid valve, a water inlet pump and a flow meter, the water inlet solenoid valve is connected to the water inlet of the water tank, the water inlet end of the water inlet pump is connected to the water outlet of the water tank, the water outlet end of the water inlet pump is connected to the outer sleeve water inlet of the shell and tube heat exchanger, and the flow meter is installed between the water inlet pump and the shell and tube heat exchanger.

[0008] As a further solution of the present invention: a water inlet level sensor is further provided on the water tank, and the water inlet level sensor is communicatively connected with the water inlet solenoid valve.

[0009] As a further solution of the present invention: the heat recovery system includes a heat recovery tank, an electric heating tube and a recovery tank temperature sensor arranged on the heat recovery tank, the water inlet of the heat recovery tank is connected to the water outlet of the outer sleeve of the shell and tube heat exchanger, and the water outlet of the heat recovery tank is connected to the water inlet end of the instant heating body.

[0010] As a further solution of the present invention: the temperature control system includes a temperature control water pump and a warm water temperature sensor, the water inlet end of the temperature control water pump is connected to the inner sleeve water outlet of the sleeve-type heat exchanger, the water outlet end of the temperature control water pump is connected to the water outlet pipe, and the warm water temperature sensor is installed between the temperature control water pump and the water outlet pipe.

[0011] As a further solution of the present invention: a boiling water temperature sensor and a boiling water level sensor are installed on the instant heating body.

[0012] As a further solution of the present invention: a water outlet temperature sensor is installed on the water outlet pipe.

[0013] As a further solution of the present invention: an expansion water reflux solenoid valve is further provided between the water outlet of the water tank and the water outlet end of the water inlet pump.

[0014] The utility model has the following beneficial effects:

[0015] (1) A single temperature-controlled water pump is designed, and the temperature-controlled water pump and the boiling water outlet valve are opened at the same time. According to the outlet water temperature selected by the user, the flow rate of boiled water from the temperature-controlled water pump and the flow rate of hot boiled water passing through the boiling water outlet valve are controlled in real time, and the temperature is adjusted proportionally. The warm water after the hot boiled water and the boiled water are mixed and flows out from the water receiving nozzle through the outlet pipe in a timely manner, thereby achieving accurate adjustment of the outlet water temperature, timely water discharge, simple and reliable structure, and low cost;

[0016] (2) Designing a heat recovery tank and installing an electric heating pipe in the heat recovery tank can maximize the recovery of hot water cooling heat, thus achieving energy saving. At the same time, the installed electric heating pipe can stabilize the water flow under various water outlet temperatures, thus satisfying the user's high-quality experience.

[0017] (3) An expansion water return solenoid valve is designed to solve the problem of water volume expansion caused by the rise in water temperature when heating the heat recovery tank and the instant heating body. The expanded water is returned to the water tank through the expansion water return solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the internal structure of a single-pump temperature-regulating water dispenser with heat recovery function in the utility model;

[0020] Figure 2 This is a principle block diagram of a single-pump temperature-regulating water dispenser with a heat recovery function in the utility model.

[0021] In the figure: 1. Water inlet system; 11. Water tank; 12. Water inlet solenoid valve; 13. Water inlet pump; 14. Flow meter; 15. Water inlet level sensor; 2. Shell-and-tube heat exchanger; 3. Heat recovery system; 31. Heat recovery tank; 32. Electric heating pipe; 33. Recovery tank temperature sensor; 4. Temperature control system; 41. Temperature control water pump; 42. Warm water temperature sensor; 5. Boiling water outlet valve; 6. Water outlet pipe; 7. Water outlet temperature sensor; 8. Expansion water reflux solenoid valve; 9. Instantaneous heating element; 91. Boiling water temperature sensor; 92. Boiling water level sensor. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, and a specific direction structure and operation. Therefore, they cannot be understood as a limitation on the present invention.

[0024] In addition, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0025] The technical solution of the present utility model will be described in detail below with reference to the accompanying drawings.

[0026] See also Figure 1-2 As shown, the present invention provides a single-pump temperature-controlled water dispenser with heat recovery function, comprising a body (not shown), internally provided with a water inlet system 1, a double-tube heat exchanger 2, a heat recovery system 3, an instant heating element 9, a temperature control system 4, a boiling water outlet valve 5, and a water outlet pipe 6. Preferably, a water outlet temperature sensor 7 is installed on the water outlet pipe 6 to detect the outlet water temperature in real time. An integrated control system (not shown) is provided on the body, and the electrical components such as the water inlet system 1, the double-tube heat exchanger 2, the heat recovery system 3, the instant heating element 9, the temperature control system 4, and the boiling water outlet valve 5 in the body are all connected to the integrated control system. The water outlet pipe 6 is connected to a water inlet nozzle (not shown) on the body. The user selects the desired water temperature, such as boiling water, boiled water, or other hot water temperatures, through the display buttons of the integrated control system. It is worth noting that the present invention only requires a single water inlet nozzle, and water of different temperatures selected by the user flows out of this single nozzle, making the body more simple and beautiful and easy to clean.

[0027] Among them, the water outlet end of the water inlet system 1 is connected with the water inlet of the outer tube of the shell and tube heat exchanger 2, and the water inlet system 1 is used to continuously transport external drinking water to the outer tube of the shell and tube heat exchanger 2 according to the set requirements. The water outlet of the outer tube of the shell and tube heat exchanger 2 is connected with the water inlet end of the heat recovery system 3, and the water outlet end of the heat recovery system 3 is connected with the water inlet end of the instant heating body 9, so that drinking water can flow from the outer tube of the shell and tube heat exchanger 2 to the heat recovery system 3, and then flow from the heat recovery system 3 to the instant heating body 9. The instant heating body 9 heats the drinking water to hot water above 90°C. One water outlet end of the instant heating body 9 is connected with the water inlet end of the boiling water outlet valve 5, and the water outlet end of the boiling water outlet valve 5 It is connected to the water outlet pipe 6, and what flows out from this water outlet end and flows to the water outlet pipe 6 and flows to the water receiving nozzle is hot boiled water above 90°C, that is, the other water outlet end of the heat heating body 9 is connected to the water inlet of the inner sleeve of the shell and tube heat exchanger 2. The hot boiled water can flow from this water outlet end to the inner sleeve of the shell and tube heat exchanger 2 to be cooled to boiled water. In the process of hot boiled water being cooled to boiled water, the heat recovery system 3 recycles the heat of the hot boiled water. The water outlet of the inner sleeve of the shell and tube heat exchanger 2 is connected to the water inlet end of the temperature control system 4, and the water outlet end of the temperature control system 4 is also connected to the water outlet pipe 6. The temperature control system 4 mixes boiled water and hot boiled water in proportion according to the water temperature set by the user and transports them to the water outlet pipe 6, so as to realize precise control of the water temperature.

[0028] like Figure 2 As shown, in an embodiment of the present utility model, the water inlet system 1 includes a water tank 11, a water inlet solenoid valve 12, a water inlet pump 13 and a flow meter 14. The water inlet solenoid valve 12 is connected to the water inlet of the water tank 11, the water inlet end of the water inlet pump 13 is connected to the water outlet of the water tank 11, the water outlet end of the water inlet pump 13 is connected to the outer sleeve water inlet of the shell and tube heat exchanger 2, the flow meter 14 is installed between the water inlet pump 13 and the shell and tube heat exchanger 2, and a water inlet level sensor 15 is also provided on the water tank 11, and the water inlet level sensor 15 is communicatively connected to the water inlet solenoid valve 12.

[0029] Drinking water enters the water tank 11 through the water inlet solenoid valve 12. When the water level in the water tank 11 reaches the preset maximum water level, the water inlet level sensor 15 sends a signal to the integrated control system, and the integrated control system controls the water inlet solenoid valve 12 to stop working. When the water level in the water tank 11 reaches the minimum water level, the integrated control system controls the water inlet solenoid valve 12 to start working, thereby achieving the purpose of intelligent water inlet.

[0030] like Figure 2 As shown, in an embodiment of the present utility model, the heat recovery system 3 includes a heat recovery tank 31, an electric heating pipe 32 and a recovery tank temperature sensor 33 arranged on the heat recovery tank 31, the water inlet of the heat recovery tank 31 is connected to the water outlet of the outer shell of the shell-and-tube heat exchanger 2, and the water outlet of the heat recovery tank 31 is connected to the water inlet end of the instant heating body 9.

[0031] When hot water is cooled in the inner sleeve of the shell-and-tube heat exchanger 2, the heat emitted by the hot water is absorbed by the cold water in the outer sleeve of the shell-and-tube heat exchanger 2 and turned into warm water. The warm water flows back to the heat recovery tank 31. The electric heating pipe 32 can pre-heat the water in the heat recovery tank 31 to reduce the working intensity and duration of the instant heating body 9. The heat recovery tank 31 is designed and the electric heating pipe 32 is installed in the heat recovery tank 31 to maximize the recovery of the cooling heat of the warm water, thereby achieving energy saving. At the same time, the installed electric heating pipe 32 stabilizes the water flow rate under various water outlet temperatures, satisfying the user's high-quality experience.

[0032] like Figure 2 As shown, in an embodiment of the present utility model, the temperature control system 4 includes a temperature control water pump 41 and a warm water temperature sensor 42. The water inlet end of the temperature control water pump 41 is connected to the inner sleeve water outlet of the shell and tube heat exchanger 2, and the water outlet end of the temperature control water pump 41 is connected to the outlet pipe 6. The warm water temperature sensor 42 is installed between the temperature control water pump 41 and the outlet pipe 6. A boiling water temperature sensor 91 and a boiling water level sensor 92 are also installed on the heating body 9.

[0033] The boiled water cooled in the inner sleeve of the shell-and-tube heat exchanger 2 flows through the temperature-regulating water pump 41, the warm water temperature sensor 42, the water outlet temperature sensor 7 and the water outlet pipe 6 in sequence, and finally flows out from the water receiving nozzle. According to the water outlet temperature selected by the user, the water outlet volume of the temperature-regulating water pump 41 and the ratio of the boiling water flow rate passing through the boiling water outlet valve 5 are controlled in real time to adjust the temperature, so as to realize water outlet according to the water outlet temperature selected by the user.

[0034] Furthermore, an expansion water reflux solenoid valve 8 is provided between the water outlet of the water tank 11 and the water outlet end of the water inlet pump 13 to solve the problem of water volume expansion caused by water temperature rising when the heat recovery tank 31 or the heating body 9 is heated. The expanded water is allowed to flow back into the water tank 11 through the expansion water reflux solenoid valve 8. The expansion water reflux solenoid valve 8 can also adopt a control valve of other structures to realize the expansion water reflux function.

[0035] The working principle of this utility model:

[0036] Water inlet process: drinking water enters the water tank 11 through the water inlet solenoid valve 12, and stops inletting when the water inlet level sensor 15 detects the preset maximum water level. The boiling water level sensor 92 detects whether there is water in the instant heating body 9. If there is no water, the water inlet pump 13 is turned on and the expansion water reflux solenoid valve 8 is closed. The water flows through the flow meter 14 and the outer sleeve of the shell-and-tube heat exchanger 2 into the heat recovery tank 31, and flows out from the water outlet of the heat recovery tank 31 into the instant heating body 9. After the boiling water level sensor 92 on the instant heating body 9 detects that the water level has reached the highest preset water level, the water inlet pump 13 is turned off and the water inlet is stopped. When the boiling water level sensor 92 detects that the water level in the instant heating body 9 is lower than the minimum water level, the water inlet pump 13 is turned on to let water in.

[0037] The user selects the hot water mode: turns on the instant heating body 9, waits for the water temperature in the instant heating body 9 to rise to above 90°C to obtain hot water, and the hot water is transported from the instant heating body 9 to the boiling water outlet valve 5, flows through the outlet pipe 6 and finally flows out of the water receiving nozzle. During this process, the temperature regulating water pump 41 is turned off.

[0038] The user selects the boiled water mode: turns on the instant heating body 9, waits for the water temperature in the instant heating body 9 to rise to above 90°C to obtain hot boiled water, closes the boiled water outlet valve 5, turns on the temperature-regulating water pump 41, and the hot boiled water flows from the instant heating body 9 to the inner sleeve of the shell-and-tube heat exchanger 2 to be cooled to boiled water. The boiled water passes through the temperature-regulating water pump 41 and the warm water temperature sensor 42 in turn, flows through the outlet pipe 6, and finally flows out of the water nozzle.

[0039] User-defined water outlet temperature mode: If the user-defined water outlet temperature is between boiled water and hot water, it is necessary to adjust the temperature, turn on the instant heating body 9, and wait until the water temperature in the instant heating body 9 rises to above 90°C to obtain hot water. At the same time, turn on the temperature-adjusting water pump 41 and the boiling water outlet valve 5. According to the water outlet temperature selected by the user, the boiled water flow of the temperature-adjusting water pump 41 and the hot boiled water flow through the boiling water outlet valve 5 are controlled in real time, and the temperature is adjusted proportionally. The warm water after the hot boiled water and boiled water are mixed will flow out from the water receiving nozzle through the outlet pipe 6 in time.

[0040] The above detailed description of the preferred embodiments of the present invention should not be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A single-pump temperature-adjusting water dispenser with heat recovery function, characterized in that: The invention comprises a water inlet system (1), a shell-and-tube heat exchanger (2), a heat recovery system (3), an instant heating element (9), a temperature control system (4), a boiling water outlet valve (5) and a water outlet pipe (6); the water outlet end of the water inlet system (1) is connected to the water inlet of the outer shell of the shell-and-tube heat exchanger (2), the water outlet of the outer shell of the shell-and-tube heat exchanger (2) is connected to the water inlet end of the heat recovery system (3), and the water outlet end of the heat recovery system (3) is connected to the water inlet of the instant heating element (9). The water end of the instant heating body (9) is connected, one water outlet end of the instant heating body (9) is connected to the water inlet end of the boiling water outlet valve (5), the water outlet end of the boiling water outlet valve (5) is connected to the water outlet pipe (6), the other water outlet end of the instant heating body (9) is connected to the inner shell water inlet of the shell-and-tube heat exchanger (2), the inner shell water outlet of the shell-and-tube heat exchanger (2) is connected to the water inlet end of the temperature control system (4), and the water outlet end of the temperature control system (4) is also connected to the water outlet pipe (6).

2. A single-pump temperature-adjustable water dispenser with heat recovery function according to claim 1, characterized in that: The water inlet system (1) comprises a water tank (11), a water inlet solenoid valve (12), a water inlet pump (13) and a flow meter (14); the water inlet solenoid valve (12) is connected to the water inlet of the water tank (11); the water inlet end of the water inlet pump (13) is connected to the water outlet of the water tank (11); the water outlet end of the water inlet pump (13) is connected to the water inlet of the outer casing of the shell-and-tube heat exchanger (2); and the flow meter (14) is installed between the water inlet pump (13) and the shell-and-tube heat exchanger (2).

3. A single-pump temperature-adjustable water dispenser with heat recovery function according to claim 2, characterized in that: The water tank (11) is also provided with a water inlet level sensor (15), and the water inlet level sensor (15) is communicatively connected to the water inlet solenoid valve (12).

4. The single-pump temperature-adjusting water dispenser with heat recovery function according to claim 1, characterized in that: The heat recovery system (3) comprises a heat recovery tank (31), an electric heating pipe (32) arranged on the heat recovery tank (31), and a recovery tank temperature sensor (33); the water inlet of the heat recovery tank (31) is connected to the water outlet of the outer shell of the shell-and-tube heat exchanger (2); and the water outlet of the heat recovery tank (31) is connected to the water inlet end of the instant heating body (9).

5. The single-pump temperature-adjusting water dispenser with heat recovery function according to claim 1, characterized in that: The temperature control system (4) comprises a temperature control water pump (41) and a warm water temperature sensor (42); the water inlet of the temperature control water pump (41) is connected to the inner shell water outlet of the shell-and-tube heat exchanger (2); the water outlet of the temperature control water pump (41) is connected to the water outlet pipe (6); and the warm water temperature sensor (42) is installed between the temperature control water pump (41) and the water outlet pipe (6).

6. The single-pump temperature-adjusting water dispenser with heat recovery function according to claim 1, characterized in that: The instant heating body (9) is provided with a boiling water temperature sensor (91) and a boiling water level sensor (92).

7. The single-pump temperature-adjusting water dispenser with heat recovery function according to claim 1, characterized in that: An outlet water temperature sensor (7) is installed on the outlet water pipe (6).

8. The single-pump temperature-adjusting water dispenser with heat recovery function according to claim 2, characterized in that: An expansion water return solenoid valve (8) is also provided between the water outlet of the water tank (11) and the water outlet end of the water inlet pump (13).

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