Water drinking equipment

Abstract

Drinking water equipment comprises a heating device. The cooling water tank is used for storing cooling water; the heat exchange device is provided with a cold water cavity and a hot water cavity which can exchange heat, a cooling water inlet of the cold water cavity is communicated with the cooling water tank, a hot water inlet of the hot water cavity is communicated with the heating device, a hot water outlet of the hot water cavity is communicated with the outside, and hot water heated by the heating device can flow to the outside after exchanging heat with cooling water in the cold water cavity; the first temperature detection piece is installed in the heating device and used for detecting the temperature of hot water in the heating device; the second temperature detection piece is arranged between the cooling water tank and the cooling water inlet and is used for detecting the temperature of the cooling water flowing out of the cooling water tank; and the flow of the cold water pump can be adjusted, the cold water pump communicates with the cooling water tank and the cold water cavity, and the cold water pump is used for adjusting the flow of cooling water flowing from the cooling water tank to the cold water cavity according to the detection result of the first temperature detection part and the detection result of the second temperature detection part, so that accurate temperature control of the drinking water equipment is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of household appliances, in particular to a water drinking device. BACKGROUND

[0002] The water drinking device usually comprises a heating device and a heat exchange device, when a user needs to drink warm water, the hot water generated by the heating device can be cooled by the heat exchange device and then supplied to the user.

[0003] Because the temperature of the environment of different users is different, and the temperature of the cooling water provided to the heat exchange device by different users is different, it may cause the heat exchange effect of the heat exchange device to be poor, and the temperature of the warm water obtained by the heat exchange of the heat exchange device may not be consistent with the temperature of the warm water required by the user, which affects the user experience. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a water drinking device, which can solve the problem of unstable heat exchange effect of the heat exchange device in the prior art.

[0005] The present application provides a water drinking device, comprising: a heating device; a cooling water tank for storing cooling water; a heat exchange device having a cold water cavity and a hot water cavity capable of heat exchange, a cooling water inlet of the cold water cavity being in communication with the cooling water tank, a hot water inlet of the hot water cavity being in communication with the heating device, a hot water outlet of the hot water cavity being in communication with the outside, hot water heated by the heating device can exchange heat with the cooling water in the cold water cavity and then flow to the outside; a first temperature detection member installed in the heating device for detecting the temperature of the hot water in the heating device; a second temperature detection member installed between the cooling water tank and the cooling water inlet for detecting the temperature of the cooling water flowing out of the cooling water tank; a cold water pump, the flow of the cold water pump being adjustable, the cold water pump being in communication with the cooling water tank and the cold water cavity respectively, the cold water pump being used to adjust the flow of the cooling water flowing from the cooling water tank to the cold water cavity according to the detection results of the first temperature detection member and the second temperature detection member.

[0006] In the above scheme, because the temperature of the environment of different users is different, the temperature of the cooling water provided to the cooling water tank may be different, even if it is the same user, the temperature of the cooling water may change because of different seasons, if the flow of the cooling water tank to the heat exchange device always remains unchanged, it may cause the temperature of the water provided to the user after the heat exchange of the heat exchange device to be inconsistent with the temperature of the water required by the user, which affects the user experience. In the water drinking device provided by the embodiment, the flow of the cold water pump is adjustable, so that the cooling water flow in the heat exchange device can be adjusted according to the temperature of the water required by the user, the temperature of the hot water in the heating device and the temperature of the cooling water in the cooling water tank, so as to ensure that the temperature of the water after the heat exchange and cooling of the heat exchange device meets the use needs of the user, and realizes the precise temperature control of the water drinking device.

[0007] In a possible design, the water drinking device further includes a water outlet pipe and a solenoid valve, the hot water outlet is connected with the outside through the water outlet pipe; the solenoid valve is provided with a water inlet channel, a first water outlet channel and a second water outlet channel which are connected with each other, the water inlet channel is connected with the heating device; the first water outlet channel is connected with the outside through the water outlet pipe; and the second water outlet channel is connected with the hot water inlet.

[0008] In the above scheme, when the set water temperature is higher than the temperature of the hot water in the heating device, the water in the heating device can be heated to the required water temperature and then supplied to the user through the water inlet channel and the first water outlet channel. When the set water temperature is lower than the temperature of the hot water in the heating device, the water in the heating device can enter the heat exchange device through the water inlet channel and the second water outlet channel to be cooled, and then be supplied to the user, which is beneficial to improve the water outlet efficiency of the water drinking device and save energy.

[0009] In a possible design, the water drinking device further includes a controller, the controller is electrically or signal connected with the first temperature detection member and the second temperature detection member respectively, and is configured to receive the detection result of the first temperature detection member and the detection result of the second temperature detection member; the controller is electrically or signal connected with the heating device, and is configured to control the heating device to heat when the set water temperature is higher than the detection result of the first temperature detection member, and control the water inlet channel to be connected with the first water outlet channel, so that the hot water heated by the heating device can flow to the outside through the water outlet pipe; the controller is electrically or signal connected with the cold water pump, and is configured to control the water inlet channel to be connected with the second water outlet channel when the set water temperature is lower than the detection result of the first temperature detection member, so that the hot water heated by the heating device can flow into the hot water cavity to be cooled; and the controller is configured to adjust the flow of the cold water pump according to the detection result of the first temperature detection member and the detection result of the second temperature detection member.

[0010] In the scheme, the controller can realize the water outlet automation of the water drinking device. The controller receives the detection result T1 of the first temperature detection member. The controller judges whether the user-set water outlet temperature T0 is greater than the detection result T1 of the first temperature detection member. If not, the controller controls the heating device to work, and continues to heat the water to T0. The controller controls the water inlet channel to communicate with the first water outlet channel, so that the water heated to T0 in the heating device can be supplied to the user through the electromagnetic valve and the water outlet pipe. If yes, the controller receives the detection result T2 of the second temperature detection member, and calculates the cooling water flow Q2 according to T1, T2, T0 and the hot water flow Q1. At this time, it can be judged whether the cooling water flow Q2 exceeds the upper limit of the cooling water pump flow. If Q2 exceeds the upper limit of the cooling water pump flow, it is because the cooling water temperature in the cooling water tank is too high. The controller can prompt the user to replace the cooling water for heat exchange through the alarm. If Q2 does not exceed the upper limit of the cooling water pump flow, the controller controls the cooling water pump to send the cooling water into the cooling water cavity of the heat exchange device according to the flow Q2. At the same time, the controller controls the water inlet channel to communicate with the second water outlet channel, so that the hot water with the temperature of T1 in the heating device enters the hot water cavity of the heat exchange device. The water with the temperature of T0 obtained after heat exchange can be supplied to the user through the water outlet pipe.

[0011] In a possible design, the cooling water outlet of the cooling water cavity communicates with the cooling water tank, so that the cooling water in the cooling water cavity after heat exchange can flow back to the cooling water tank.

[0012] In the scheme, the cooling water can be recycled, so as to save the cooling water consumption and reduce the use cost of the water drinking device.

[0013] In a possible design, the two ends of the cooling water pump respectively communicate with the cooling water tank and the cooling water inlet; or the two ends of the cooling water pump respectively communicate with the cooling water tank and the cooling water outlet.

[0014] In the scheme, if the two ends of the cooling water pump respectively communicate with the cooling water tank and the cooling water inlet, when the flow of the cooling water pump changes, the amount of water pumped from the cooling water tank by the cooling water pump changes, so that the cooling water flow from the cooling water tank to the cooling water cavity can be adjusted. If the two ends of the cooling water pump respectively communicate with the cooling water tank and the cooling water outlet. When the flow of the cooling water pump changes, the amount of water pumped from the cooling water cavity by the cooling water pump and sent back to the cooling water tank changes, so that the cooling water flow from the cooling water tank to the cooling water cavity can be indirectly adjusted.

[0015] In a possible design, the heat exchange device is a sleeve assembly, the sleeve assembly includes an inner tube and an outer tube, the inner tube is contained in the outer tube; the inner tube has a tube cavity, the hot water cavity is formed in the tube cavity; the cooling water cavity is formed between the outer wall of the inner tube and the inner wall of the outer tube.

[0016] In the above scheme, the inner tube with the hot water chamber can be completely immersed in the cooling water, which helps to improve the heat exchange efficiency and effect of the heat exchange device. Moreover, this sleeve structure also helps to reduce the size of the heat exchange device, facilitating the miniaturization of drinking water equipment.

[0017] In one possible design, the sleeve assembly includes a first end and a second end, one of which is provided with a cooling water inlet and a hot water inlet, and the other is provided with a cooling water outlet and a hot water outlet.

[0018] In the above scheme, the cold water chamber and hot water chamber of the heat exchange device have the same end for water inlet and outlet. This ensures that the cooling water and hot water can exchange heat fully, so that the temperature of the cold water at the cooling water outlet and the hot water at the hot water outlet are basically the same, which further improves the heat exchange effect of the heat exchange device.

[0019] In one possible design, the drinking water device includes a main body, with the heating device installed inside the main body and the heat exchange device installed outside the main body.

[0020] In the above scheme, the main body can prevent the heat emitted by the heating device from causing the cooling water in the cold water chamber to heat up, ensuring that the heat exchange device maintains a good heat exchange effect, which is conducive to improving the heat exchange efficiency of the heat exchange device.

[0021] In one possible design, the sleeve assembly is coiled and forms a receiving space; the cold water pump is installed within the receiving space.

[0022] In the above scheme, the sleeve assembly can be arranged in a coiled structure, which helps save space occupied by the heat exchange device. This allows for a longer total length of the sleeve assembly to be accommodated within a limited installation space. The coiled sleeve assembly forms a receiving space within which the cold water pump can be installed. On the one hand, the sleeve assembly's arrangement around the cold water pump allows for a longer total length, thus extending the path between the cold water chamber and the hot water chamber, resulting in better heat exchange. On the other hand, the sleeve assembly also acts as a limiting element around the cold water pump, improving its installation stability.

[0023] In one possible design, the drinking water device includes a main body, with the heating device installed inside the main body; and the cooling water tank is detachably installed outside the main body.

[0024] In the above design, the main body serves as insulation, preventing the heat emitted by the heating device from causing the cooling water inside the cooling water tank to heat up, thus maintaining the cooling effect of the cooling water. When the cooling water tank is detachable, users can remove it to change the cooling water without moving the entire water dispenser, improving user comfort.

[0025] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0026] Figure 1 A schematic diagram of the drinking water equipment provided in this application;

[0027] Figure 2 for Figure 1 A structural schematic diagram of the drinking water equipment from another perspective;

[0028] Figure 3 for Figure 1 A structural schematic diagram of the drinking water equipment from another perspective;

[0029] Figure 4 for Figure 2 A schematic diagram of the heat exchange device in the diagram;

[0030] Figure 5 for Figure 4 A cross-sectional structural diagram of the heat exchange device in the diagram;

[0031] Figure 6 for Figure 1 A flowchart illustrating the working principle of the drinking water equipment.

[0032] Figure label:

[0033] 10-Main Body;

[0034] 1-Heating device;

[0035] 2-Cooling water tank;

[0036] 3-Heat exchange device;

[0037] 3a - First end;

[0038] 3b - Second end;

[0039] 3c - Accommodation space;

[0040] 301 - Inner tube;

[0041] 302 - Outer tube;

[0042] 31-Cold water chamber;

[0043] 311 - Cooling water inlet;

[0044] 312 - Cooling water outlet;

[0045] 32-Hot water chamber;

[0046] 321 - Hot water inlet;

[0047] 322 - Hot water outlet;

[0048] 4-Second temperature sensing element;

[0049] 5-Cold water pump;

[0050] 6-Water outlet pipe;

[0051] 7-Solenoid valve;

[0052] 71 - Water inlet channel;

[0053] 72 - First water outlet channel;

[0054] 73 - Second water outlet channel;

[0055] 8-Hot water pump. Detailed Implementation

[0056] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0057] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0058] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0059] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0060] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0061] This application provides a drinking water device, such as... Figures 1 to 3As shown, the drinking water equipment includes a main body 10 and a heating device 1, a cooling water tank 2, a heat exchange device 3, and a cold water pump 5 installed on the main body 10. The main body 10 is equipped with a water outlet pipe 6 connected to the outside, and the cooling water tank 2 is used to store cooling water; as shown... Figure 4 As shown, the heat exchange device 3 has a cold water chamber 31 and a hot water chamber 32 for heat exchange. The cooling water inlet 311 of the cold water chamber 31 is connected to the cooling water tank 2, and the hot water inlet 321 of the hot water chamber 32 is connected to the heating device 1. The hot water outlet 322 of the hot water chamber 32 is connected to the outside via the outlet pipe 6. The drinking water equipment may also include a water storage tank (not shown in the figure) installed in the main body 10. The heating device 1 is used to heat the liquid in the water storage tank. The hot water heated by the heating device 1 can exchange heat with the cooling water in the cold water chamber 31 and then flow to the outside for users to drink.

[0062] The heating device 3 is equipped with a first temperature sensor to detect the temperature of the hot water inside the heating device 1. A second temperature sensor 4 is installed on the connecting pipe between the cooling water tank 2 and the cooling water inlet 311 to detect the temperature of the cooling water flowing out of the cooling water tank 2. The cold water pump 5 is an adjustable flow pump connected to both the cooling water tank 2 and the cold water chamber 31. The flow rate of the cold water pump 5 can be adjusted according to the detection results of the first and second temperature sensors 4, thereby regulating the flow rate of cooling water from the cooling water tank 2 to the cold water chamber 31.

[0063] Specifically, due to differences in ambient temperature among different users, the temperature of the cooling water supplied to the cooling water tank 2 may vary. Even for the same user, the cooling water temperature may change depending on the season. If the flow rate of the cooling water from the cooling water tank 2 to the heat exchange device 3 remains constant, the water temperature supplied to the user after heat exchange by the heat exchange device 3 may not match the user's required water temperature, affecting the user's experience. In the drinking water equipment provided in this embodiment, the flow rate of the cold water pump 5 is adjustable. This allows the flow rate of the cooling water in the heat exchange device 3 to be adjusted according to the user's required water temperature, the hot water temperature in the heating device 1, and the cold water temperature in the cooling water tank 2. This ensures that the water temperature after heat exchange and cooling by the heat exchange device 3 meets the user's needs, achieving precise temperature control of the drinking water equipment.

[0064] The specific adjustment method for the flow rate of the cold water pump 5 is as follows: Assuming the user sets the outlet water temperature to T0, the hot water temperature in the heating device 1 is T1, which can be obtained through the detection result of the first temperature sensor, the cooling water temperature flowing from the cooling water tank 2 to the heat exchange device 3 is T2, which can be obtained through the detection result of the second temperature sensor, the hot water flow rate out of the heating device 1 is Q1 (Q1 is a fixed value), and the cooling water flow rate is Q2. Ignoring heat loss in the process, the relationship between Q2 and Q1 is as follows:

[0065] Q2·t(T0-T2)c=Q1·t(T1-T0)c

[0066] Where c is the specific heat capacity of water and t is the heat transfer time, we can obtain:

[0067] Q2 = Q1(T1-T0) / (T0-T2)

[0068] Therefore, the required flow rate of the cooling pump 5 under the current conditions can be calculated based on the user-set outlet water temperature T0, the detection result T1 of the first temperature sensor, and the detection result T2 of the second temperature sensor 4. In this way, regardless of changes in the hot water temperature in the heating device 1 or the cold water temperature in the cooling water tank 2, the flow rate of the cooling water flowing into the heat exchange device 3 can be adjusted by regulating the flow rate of the cooling pump 5. This ensures that the heat exchange device 3 maintains a stable heat exchange effect, guaranteeing that the cooling water can completely absorb the excess heat from the hot water. Consequently, the drinking water equipment can quickly dispense water according to the user-set drinking water temperature, and the water temperature meets the user's needs.

[0069] It should be noted that when the calculated value of Q2 exceeds the maximum flow rate of the cold water pump 5, it indicates that the temperature of the cooling water in the cooling water tank 2 is too high, and the user needs to replace the cooling water in the cooling water tank 2.

[0070] In this embodiment, the drinking water device may also be equipped with a controller. The controller is electrically or signal-connected to the first temperature sensor and the second temperature sensor 4, respectively, and is used to receive the detection results of the first temperature sensor and the second temperature sensor 4. The controller is also electrically or signal-connected to the cold water pump 5. The controller can adjust the flow rate of the cold water pump 5 according to the user-set outlet water temperature and the detection results of the first and second temperature sensors 4, so as to realize the automatic temperature control function of the drinking water device. Specifically, the controller can adjust the flow rate of the cold water pump 5 by adjusting the input voltage of the cold water pump 5. Of course, it can also be achieved by other means, which are not limited in this embodiment.

[0071] In this embodiment, the first temperature detection element can be a temperature sensor such as an NTC thermistor, a PTC thermistor, or a thermocouple. Similarly, the second temperature detection element 4 can also be a temperature sensor such as an NTC thermistor, a PTC thermistor, or a thermocouple. This embodiment does not impose any restrictions on this.

[0072] In one specific embodiment, the hot water inlet 322 can be directly connected to the heating device 1. When a user needs drinking water, the hot water in the heating device 1 flows into the heat exchange device 3, is cooled by the heat exchange device 3, and then supplied to the user from the outlet pipe 6. That is, in this embodiment, the water provided by the drinking water equipment is obtained through heating and then cooling, which improves the sterilization effect of the drinking water. Compared with instant hot water generation, it can effectively sterilize and improve the user's drinking water safety. In this embodiment, the controller only needs to adjust the flow rate of the cold water pump 5 according to the user-set outlet water temperature T0, the detection result T1 of the first temperature sensor, and the detection result T2 of the second temperature sensor 4.

[0073] In addition, in this embodiment, the drinking water equipment may also include a hot water pump 8, which is connected to the heating device 1 and the hot water inlet 322 respectively, and is used to draw hot water from the heating device 1 and send it into the heat exchange device 3, which is beneficial to improve the heat exchange efficiency of the drinking water equipment.

[0074] like Figure 3 As shown, in another specific embodiment, the drinking water equipment is further equipped with a solenoid valve 7, which is a three-way valve, including an inlet channel 71, a first outlet channel 72, and a second outlet channel 73 that are interconnected. The inlet channel 71 is connected to the heating device 1, the first outlet channel 72 is connected to the outside via the outlet pipe 6, and the second inlet channel 71 is connected to the hot water inlet 321. The controller is electrically or signal-connected to the heating device 1 and the solenoid valve 7, respectively.

[0075] like Figure 6As shown, in this embodiment, after the user sets the outlet water temperature T0, the working process of the drinking water equipment is as follows: First, the controller receives the detection result T1 from the first temperature sensor. The controller determines whether the outlet water temperature T0 set by the user is greater than the detection result T1 from the first temperature sensor. If not, the controller controls the heating device 1 to continue heating the water to T0, and the controller controls the inlet channel 71 to connect with the first outlet channel 72 so that the water heated to T0 in the heating device 1 can be supplied to the user for drinking through the solenoid valve 7 and the outlet pipe 6. If yes, the controller receives the detection result T2 from the second temperature sensor 4, and calculates the cooling water flow rate Q2 based on T1, T2, T0 and the hot water flow rate Q1. First, it can be determined whether the cooling water flow rate Q2 exceeds the upper limit of the cold water pump 5. If Q2 exceeds the upper limit of the cold water pump 5, it is because the temperature of the cooling water in the cooling water tank 2 is too high. The controller can prompt the user to replace the cooling water for heat exchange through an alarm. If Q2 does not exceed the upper limit of the cold water pump 5, the controller controls the cold water pump to send the cooling water into the cold water chamber 31 of the heat exchange device 3 at a flow rate of Q2. At the same time, the controller controls the inlet channel 71 to connect with the second outlet channel 73 so that the hot water at temperature T1 in the heating device 1 enters the hot water chamber 32 of the heat exchange device 3. The water at temperature T0 obtained after heat exchange in the heat exchange device 3 can be supplied to the user for drinking from the hot water outlet 322 through the outlet pipe 6. In this embodiment, it is not necessary to heat the water in the heating device 1 to boiling point and then cool it down. Compared with the previous embodiment, it is more energy-efficient and helps to improve the water output efficiency of the drinking water equipment.

[0076] In addition, in this embodiment, the drinking water equipment may also include a hot water pump 8, which is connected to the heating device 1 and the water inlet channel 71 respectively, and is used to draw hot water from the heating device 1 and send it into the solenoid valve 7, which is beneficial to improve the water output efficiency of the heating device 1.

[0077] In one specific embodiment, the cooling water outlet 312 of the cold water chamber 31 is connected to the cooling water tank 2 so that the cooling water in the cold water chamber after heat exchange can flow back to the cooling water tank 2, thereby realizing the recycling of cooling water, saving the amount of cooling water used, and reducing the operating cost of the drinking water equipment.

[0078] In one specific embodiment, the cold water pump 5 can be positioned between the outlet of the cooling water tank 2 and the cooling water inlet 311 of the cold water chamber 31, meaning that both ends of the cold water pump 5 are connected to the cooling water tank 2 and the cooling water inlet 311, respectively. When the flow rate of the cold water pump 5 changes, the amount of water drawn from the cooling water tank 2 by the cold water pump 5 changes, thereby regulating the flow rate of cooling water from the cooling water tank 1 to the cold water chamber 31. Alternatively, the cold water pump 5 can be positioned between the cooling water outlet 312 of the cold water chamber 31 and the inlet of the cooling water tank 2, meaning that both ends of the cold water pump 5 are connected to the cooling water tank 2 and the cooling water outlet 312, respectively. When the flow rate of the cold water pump 5 changes, the amount of water drawn from the cold water chamber 31 and returned to the cooling water tank 2 by the cold water pump 5 changes, thereby indirectly regulating the flow rate of cooling water from the cooling water tank 1 to the cold water chamber 31.

[0079] In one specific implementation, such as Figure 2 and Figure 3 As shown, the heating device 1 is installed inside the main body 10, and the cooling water tank 2 is installed outside the main body 10. The main body 10 can serve as heat insulation, preventing the heat emitted by the heating device 1 from causing the cooling water inside the cooling water tank 2 to heat up, thus maintaining the cooling effect of the cooling water. Furthermore, the cooling water tank 2 can be designed as a detachable structure, so that when the user needs to change the cooling water, the cooling water tank 2 can be removed for operation without having to move the entire water dispenser, improving user comfort.

[0080] like Figure 2 and Figure 3 As shown, the heat exchange device 3 is also installed outside the main body 10. The main body 10 can prevent the heat emitted by the heating device 1 from causing the cooling water in the cold water chamber 31 to heat up, ensuring that the heat exchange device 3 maintains a good heat exchange effect, which is conducive to improving the heat exchange efficiency of the heat exchange device 3.

[0081] In one specific implementation, such as Figure 4 and Figure 5 As shown, the heat exchange device 3 can specifically be a sleeve assembly, including an inner tube 301 and an outer tube 302, with the inner tube 301 housed inside the outer tube 302. The inner tube 301 has a cavity, with a hot water cavity 32 formed within the cavity, and a cold water cavity 31 formed between the outer wall of the inner tube 301 and the inner wall of the outer tube 302. This means that the inner tube 301 with the hot water cavity 32 can be completely immersed in the cooling water, which is beneficial for improving the heat exchange efficiency and effect of the heat exchange device 3. Furthermore, this sleeve structure also helps to reduce the size of the heat exchange device 3, facilitating the miniaturization of drinking water equipment.

[0082] Specifically, such as Figure 4As shown, the sleeve assembly has a first end 3a and a second end 3b. One of the first end 3a and the second end 3b is provided with a cooling water inlet 311 and a hot water inlet 321, and the other is provided with a cooling water outlet 312 and a hot water outlet 322. That is, the cold water chamber 31 and the hot water chamber 32 of the heat exchange device 3 provided in this embodiment have a structure where water enters from the same end and exits from the same end. This ensures that the cooling water and hot water achieve sufficient heat exchange, so that the temperature of the cold water at the cooling water outlet 312 and the hot water at the hot water outlet 322 are basically the same, further improving the heat exchange effect of the heat exchange device 3.

[0083] In this embodiment, both the inner tube 301 and the outer tube 302 can be made of stainless steel, which not only has high structural strength and hardness, but also is not prone to bacterial growth, making it more convenient to use and clean. The inner diameter of the inner tube 301 should be greater than or equal to 3mm, specifically 3mm, 4mm, 5mm, 6mm, etc., to prevent excessive internal resistance due to a small cross-sectional area, which could affect the normal operation of the cold water pump 5.

[0084] In one specific embodiment, the sleeve assembly can be arranged in a coiled structure, which helps to save space occupied by the heat exchange device 3, thus accommodating a longer sleeve assembly within a limited installation space. This embodiment does not limit the length of the sleeve assembly or the number of coils, and can be specifically designed according to the required pipeline length of the heat exchange device 3. The sleeve assembly is coiled to form a receiving space 3c, in which the cold water pump 5 can be installed. On the one hand, the sleeve assembly is arranged around the cold water pump 5, which makes the total length of the sleeve assembly longer, that is, it extends the path between the cold water chamber 31 and the hot water chamber 32, resulting in better heat exchange effect. On the other hand, the sleeve assembly can also play a limiting role around the cold water pump 5, improving the installation stability of the cold water pump 5.

[0085] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A drinking water device, characterized in that, include: Heating device (1); Cooling water tank (2), used to store cooling water; The heat exchange device (3) has a cold water chamber (31) and a hot water chamber (32) for heat exchange. The cooling water inlet (311) of the cold water chamber (31) is connected to the cooling water tank (2). The hot water inlet (321) of the hot water chamber (32) is connected to the heating device (1). The hot water outlet (322) of the hot water chamber (32) is connected to the outside. The hot water heated by the heating device (1) can exchange heat with the cooling water in the cold water chamber (31) and then flow to the outside. The first temperature detection element is installed inside the heating device (1) and is used to detect the temperature of the hot water inside the heating device (1); The second temperature detection element (4) is installed between the cooling water tank (2) and the cooling water inlet (311) to detect the temperature of the cooling water flowing out of the cooling water tank (2); A cold water pump (5) with adjustable flow rate is connected to the cooling water tank (2) and the cold water chamber (31) respectively. The cold water pump (5) is used to adjust the flow rate of cooling water from the cooling water tank (2) to the cold water chamber (31) according to the detection results of the first temperature detection device and the second temperature detection device (4).

2. The drinking water equipment according to claim 1, characterized in that, The drinking water equipment also includes a water outlet pipe (6) and a solenoid valve (7), and the hot water outlet (322) is connected to the outside through the water outlet pipe (6); The solenoid valve (7) is provided with an inlet channel (71), a first outlet channel (72) and a second outlet channel (73) that are interconnected. The inlet channel (71) is connected to the heating device (1). The first water outlet channel (72) is connected to the outside via the water outlet pipe (6); The second water outlet channel (73) is connected to the hot water inlet (321).

3. The drinking water equipment according to claim 2, characterized in that, The drinking water equipment also includes a controller, which is electrically or signal-connected to the first temperature detection element and the second temperature detection element (4) respectively, and is used to receive the detection results of the first temperature detection element and the detection results of the second temperature detection element (4); The controller is also electrically or signal-connected to the heating device (1) and is used to control the heating device (1) to heat when the set water temperature is higher than the detection result of the first temperature detection element, and to control the water inlet channel (71) to connect with the first water outlet channel (72) so that the hot water heated by the heating device (1) can flow to the outside through the water outlet pipe (6); The controller is also electrically or signal-connected to the cold water pump (5) and is used to control the water inlet channel (71) to connect with the second water outlet channel (73) when the set water temperature is lower than the detection result of the first temperature detector, so that the hot water heated by the heating device (1) can flow into the hot water chamber (32) for heat exchange. The controller is also used to adjust the flow rate of the cold water pump (5) according to the detection result of the first temperature detector and the detection result of the second temperature detector (4).

4. The drinking water equipment according to claim 1, characterized in that, The cooling water outlet (312) of the cold water chamber (31) is connected to the cooling water tank (2) so that the cooling water in the cold water chamber (31) after heat exchange can flow back to the cooling water tank (2).

5. The drinking water equipment according to claim 4, characterized in that, The two ends of the cold water pump (5) are respectively connected to the cooling water tank (2) and the cooling water inlet (311); Alternatively, the two ends of the cold water pump (5) are connected to the cooling water tank (2) and the cooling water outlet (312), respectively.

6. The drinking water equipment according to claim 4, characterized in that, The heat exchange device (3) is a sleeve assembly, which includes an inner tube (301) and an outer tube (302), with the inner tube (301) housed inside the outer tube (302). The inner tube (301) has a cavity, and the hot water cavity (32) is formed within the cavity; The cold water chamber (31) is formed between the outer wall of the inner tube (301) and the inner wall of the outer tube (302).

7. The drinking water equipment according to claim 6, characterized in that, The sleeve assembly includes a first end (3a) and a second end (3b). One of the first end (3a) and the second end (3b) is provided with the cooling water inlet (311) and the hot water inlet (321), and the other end is provided with the cooling water outlet (312) and the hot water outlet (322).

8. The drinking water equipment according to claim 6, characterized in that, The drinking water equipment includes a main body (10), and the heating device (1) is installed inside the main body (10); The heat exchange device (3) is installed on the outside of the main body (10).

9. The drinking water equipment according to claim 8, characterized in that, The sleeve assembly is coiled and forms a receiving space (3c); The cold water pump (5) is installed in the accommodating space (3c).

10. The drinking water equipment according to any one of claims 1-9, characterized in that, The drinking water equipment includes a main body (10), and the heating device (1) is installed inside the main body (10); The cooling water tank (2) is detachably installed on the outside of the main body (10).

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