Bathtub filling method, temperature measuring device, bathtub filling system and bathtub

Abstract

The present application discloses a bathtub water filling method, a temperature measuring device, a bathtub water filling system and a bathtub. In the bathtub water filling method, the water temperature of the water filling is determined by the set water temperature and the real-time water temperature at least in part of the water filling stage. The real-time water temperature is sent in real time by a temperature measuring device placed in the bathtub body through wireless transmission in a working state. The temperature measuring device is configured to enter the working state when it senses that it is in the water. The bathtub using the bathtub water filling method can automatically control the water filling temperature according to the real-time water temperature without opening a window on the bathtub wall or wasting water.

Description

Technical Field

[0001] The present application relates to the field of temperature measurement, and in particular to a bathtub filling method, a temperature measuring device, a bathtub filling system and a bathtub. Background Art

[0002] At present, for common bathtubs on the market, if users want to control the water temperature in the bathtub when filling it with water, they often need to test it with their hands and adjust the cold water switch and the hot water switch accordingly, which causes inconvenience to the users.

[0003] In order to know the water temperature of the bathtub, a known technical solution is to open a window on the inner wall of the bathtub body for the temperature sensor to sense the water temperature, and then transmit the water temperature information to the display through electrical connection or signal connection, so that the user can know the water temperature in real time and then adjust the water filling temperature. However, since this technical solution requires opening a window on the inner wall of the bathtub body, it increases the difficulty of manufacturing the bathtub body and reduces the yield rate of the body.

[0004] In order to solve the above defects, Chinese patent application CN107859115A published on March 30, 2018 discloses a technical solution, which places a temperature sensor in the drain valve of the bathtub and controls the bathtub to drain at regular intervals. The temperature sensor detects the temperature of the discharged water and controls the mixing valve to adjust the water output ratio of cold water and hot water according to the water temperature until the bathtub is refilled, thereby achieving the purpose of automatically controlling the water temperature in the bathtub. However, the above technical solution has the problem of wasting water because it requires regular drainage. Summary of the invention

[0005] The purpose of the present application is to overcome the above-mentioned defects or problems existing in the background technology, and to provide a bathtub water filling method, a temperature measuring device, a bathtub water filling system and a bathtub, which can automatically control the water filling temperature according to the real-time water temperature without opening a window on the bathtub wall or wasting water.

[0006] In order to achieve the above purpose, the following technical solutions are adopted:

[0007] The first technical solution relates to a temperature measuring device, which is configured to be suitable for being placed in a bathtub body and is weighted so that the gravity it receives is greater than or equal to the buoyancy it receives when it is completely immersed, and comprises: a shell; a temperature sensing module, which is mounted in the shell and is suitable for measuring the water temperature in the bathtub body in real time and sending a water temperature signal; a wireless module, which is mounted in the shell and is suitable for receiving water temperature information and sending it wirelessly; a capacitor module, which is mounted in the shell and is provided with a first conductor attached to the inner wall of the shell and is suitable for sending a capacitance value corresponding to the first conductor in real time; and a control module, which is mounted in the shell and controls the operation of the temperature sensing module and the wireless module when the capacitance value is greater than a set threshold value, receives the water temperature signal and sends the water temperature information about the real-time water temperature to the wireless module.

[0008] The second technical scheme relates to a temperature measuring device, which is configured to be suitable for being placed in a bathtub body and is weighted to be suitable for floating on the water surface in a determined posture, and comprises: a shell, which forms an above-water part and an underwater part when the temperature measuring device floats on the water surface; a temperature sensing module, which is installed in the shell and has a temperature measuring end extending out or sticking to the underwater part, and is suitable for real-time measurement of the water temperature in the bathtub body and sending a water temperature signal; a wireless module, which is installed in the shell, and is suitable for receiving water temperature information and sending it wirelessly; a capacitor module, which is installed in the shell and has a first conductor attached to the inner wall of the underwater part, and is suitable for real-time sending a capacitance value corresponding to the first conductor; and a control module, which is installed in the shell and controls the operation of the temperature sensing module and the wireless module when the capacitance value is greater than a set threshold value, and receives the water temperature signal and sends the water temperature information about the real-time water temperature to the wireless module.

[0009] The third technical solution is based on the second technical solution, wherein it also includes a position sensor and a connecting rope; it is configured so that when the position sensor is suspended in water, the shell still floats on the water surface; the position sensor includes a body and a posture sensing module, the body is provided with a connecting part, and the connecting part is located at the top of the body only when the position sensor is suspended in water; the posture sensing module is electrically connected or signal-connected with the control module, and is suitable for judging whether the connecting part is located at the top of the body, and sending a position signal to the control module when the connecting part is located at the top of the body; one end of the connecting rope is connected to the connecting part, and the other end is connected to the bottom of the underwater part; the wireless module is also suitable for receiving the position prompt information and sending it wirelessly; the control module also receives the position signal and sends the position prompt information to the wireless module.

[0010] The fourth technical scheme relates to a bathtub water filling system, which includes: a water filling unit, which is provided with a driving member and a mixing valve for water filling, and the driving member drives the mixing valve to start and close the water filling and adjust the water temperature of the water filling; a temperature measuring device, which is as described in the first technical scheme or the second technical scheme; a wireless unit, which is suitable for receiving and sending the water temperature information from the wireless module; and a control unit, which is suitable for receiving a water filling instruction, setting information about the set water temperature and the water temperature information; after receiving the water filling instruction, it controls the driving member to start the water filling and adjust the water temperature of the water filling according to the set water temperature, and after receiving the water temperature information for the first time, it controls the driving member to operate and adjust the water temperature of the water filling according to the set water temperature and the real-time water temperature.

[0011] The fifth technical solution is based on the fourth technical solution, wherein the control unit is further adapted to detect the water level in the bathtub body and control the drive member to operate to shut off water injection when the water level reaches a preset water level value.

[0012] The sixth technical solution is based on the fifth technical solution, wherein the control unit is provided with a second conductor attached to the outer wall of the bathtub body at a preset water level position, and determines that the water level reaches a preset water level value when the capacitance value corresponding to the second conductor is greater than a set threshold.

[0013] The seventh technical scheme relates to a bathtub water filling system, which includes: a water filling unit, which is provided with a driving member and a mixing valve for water filling, and the driving member drives the mixing valve to start and close water filling and adjust the water temperature of the water filling; a temperature measuring device, which is as described in the third technical scheme; a wireless unit, which is suitable for receiving and sending the water temperature information and the arrival prompt information from the wireless module; and a control unit, which is suitable for receiving a water filling instruction, setting information about the set water temperature, the water temperature information and the arrival prompt information; after receiving the water filling instruction, it controls the driving member to start water filling and adjust the water temperature of the water filling according to the set water temperature, after receiving the water temperature information for the first time, it controls the driving member to act and adjust the water temperature of the water filling according to the set water temperature and the real-time water temperature, and after receiving the arrival prompt information, it controls the driving member to act to close the water filling.

[0014] The eighth technical solution relates to a bathtub, which includes a bathtub body and a bathtub water filling system as described in any one of the fourth to seventh technical solutions.

[0015] The ninth technical solution relates to a method for filling a bathtub with water, wherein the water temperature in at least part of the filling stage is jointly determined by the set water temperature and the real-time water temperature, and is characterized in that the real-time water temperature is sent in real time by a temperature measuring device placed in the bathtub body through wireless transmission in a working state, and the temperature measuring device is as described in any one of the technical solutions of the first to third claims, and the temperature measuring device is configured to enter a working state when it senses that it is located in water.

[0016] The tenth technical solution is based on the ninth technical solution, wherein, when the real-time water temperature is lower than the set water temperature, the injection water temperature is higher than the set water temperature.

[0017] Compared with the prior art, the above solution has the following beneficial effects:

[0018] The first technical solution and the second technical solution respectively disclose two temperature measuring devices, which have in common that both can measure the water temperature in the bathtub and send it to the outside through a wireless module, and both use capacitive sensing to determine whether it is in the water to determine whether to enter the working state, so both can be applied to the first technical solution and the second technical solution to obtain corresponding technical effects. The difference between the two is that the temperature measuring device in the first technical solution is weighted so that the gravity it receives is greater than or equal to the buoyancy it receives when it is completely immersed, so it has no requirements for the setting position of the temperature sensing module and the first conductor; while the temperature measuring device in the second technical solution is weighted so that it is suitable for floating on the water surface in a certain posture, so that the shell forms an above-water part and an underwater part above and below the water surface, respectively, and the temperature measuring end of the temperature sensing module and the first conductor are set in the underwater part to achieve the above effect.

[0019] In the second technical solution, since the temperature measuring device is weighted to float on the water surface, and the water in the bathtub often dissipates heat through evaporation, the real-time water temperature obtained by the temperature measuring device is lower than the real-time water temperature obtained by the temperature measuring device in the first technical solution. Therefore, it is more conducive to increasing the water temperature of the water injection, so that the final water temperature in the bathtub reaches or is close to the set water temperature.

[0020] In the third technical solution, since the shell can drive the connecting part of the body through the connecting rope, as the water level rises, when the shell drives the connecting part to the top of the body, that is, when the in-position sensor is suspended in the water, the attitude sensing module will send an in-position signal to the control module. Therefore, compared with the liquid level sensing through capacitance, the deployment difficulty is reduced. Since the length of the connecting rope can be changed by tying a knot, the user can easily change the water level setting.

[0021] The bathtub filling system in the fourth technical solution realizes the collection of water temperature information by applying the temperature measuring device in the first or second technical solution, and therefore also has the technical effects of the first or second technical solution accordingly, and realizes automatic control of the filling water temperature.

[0022] In the fifth technical solution, the control unit can turn off the water injection when the water level in the bathtub body reaches the preset water level value, without the need for manual operation by the user, which is simple and convenient. And because the preset water level value is fixed, the control unit can control the water injection temperature so that when the water level reaches the preset water level value, the real-time water temperature also reaches the set water temperature, which is convenient for users to use.

[0023] In the sixth technical solution, liquid level control is achieved by capacitive sensing of the liquid level, which can avoid opening windows on the inner wall of the bathtub body and will not affect the yield of the bathtub.

[0024] The seventh technical solution adopts the temperature measuring device in the third technical solution, and therefore has the corresponding technical effect.

[0025] The bathtub in the eighth technical solution also has the corresponding effect because it adopts the bathtub water filling system provided by any one of the fourth to seventh technical solutions.

[0026] In the ninth technical solution, since the real-time water temperature is sent in real time by a temperature measuring device placed in the bathtub body, compared with the prior art, the bathtub water filling method can not only avoid the reduction of the yield rate due to the opening of the window in the inner wall of the bathtub body, but also avoid the waste of water and save costs. In addition, since the temperature measuring device will only enter the working state when it senses that it is in the water, it is in a low power consumption state when it is in a waterless environment, which reduces power consumption and prolongs the use time after a single charge.

[0027] In the tenth technical solution, the water temperature of the injection water is greater than the set water temperature when the real-time water temperature is lower than the set water temperature. Therefore, the final water temperature in the bathtub can reach the set water temperature by adjusting the water temperature of the injection water. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solution of the embodiment, the following briefly introduces the drawings required for use:

[0029] Figure 1 This is a schematic diagram of the bathtub when the temperature measuring device sends an in-place prompt message in Example 1.

[0030] Figure 2 Schematic diagram of the structure of the temperature measuring device in Example 1.

[0031] Figure 3 1 is a connection diagram of the bathtub circuit function in the first embodiment.

[0032] Figure 4 This is a schematic diagram of the bathtub when the temperature measuring device in Example 1 is in a non-working state.

[0033] Figure 5 This is a schematic diagram of the bathtub when the temperature measuring device in Example 1 is in working state.

[0034] Figure 6 It is a structural schematic diagram of the temperature measuring device in Example 2.

[0035] Figure 7 This is a schematic diagram of the bathtub when the water level in the bathtub body reaches a preset water level value in the second embodiment.

[0036] Description of main reference numerals:

[0037] Bathtub 1, bathtub body 2, temperature measuring device 3, shell 4, above-water part 5, underwater part 6, temperature sensing module 7, wireless module 8, capacitor module 9, first conductor 10, control module 11, position sensor 12, body 13, connecting part 14, posture sensing module 15, connecting rope 16, water filling unit 17, wireless unit 18, control unit 19, second conductor 20, temperature measuring end 21. DETAILED DESCRIPTION

[0038] In the claims and the description, unless otherwise defined, the terms "first", "second" or "third", etc. are intended to distinguish different objects rather than to describe a specific order.

[0039] In the claims and the specification, unless otherwise defined, terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings and are only for the convenience of simplifying the description and do not imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction.

[0040] In the claims and the specification, unless otherwise defined, the term "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method in which there is no displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0041] In the claims and the description, unless otherwise defined, the terms "includes", "has" and their variations mean "including but not limited to".

[0042] In the claims and specification, unless otherwise defined, the term "weight" means changing the distribution of mass in the space occupied by an object.

[0043] In the claims and the specification, unless otherwise defined, the term "floating on water" means that an object is still partially above the water surface when it is only subjected to buoyancy and gravity and the two forces are balanced.

[0044] In the claims and the specification, unless otherwise defined, the term "definite posture" in the fourth technical solution means that when the shell floats on calm water, it has a definite above-water part and underwater part; and in the fifth technical solution, it means that the first area of ​​the shell is within the second area, wherein the first area of ​​the shell is defined as the area where the shell is below the water surface when the shell floats on the water surface and the in-position sensor is still supported by the bottom wall of the cylinder, and the second area of ​​the shell is defined as the area where the shell is below the water surface when the shell floats on the water surface and the in-position sensor is suspended in the water.

[0045] In the claims and the specification, unless otherwise defined, the term "underwater portion" in the fourth technical solution refers to the portion of the shell that is below the water surface when the shell floats on the water surface, and in the fifth technical solution refers to the portion of the shell that is always below the water surface after the shell floats on the water surface regardless of whether the in-position sensor is supported by the bottom wall of the cylinder body.

[0046] In the claims and the specification, unless otherwise defined, the term "above-water portion" in the fourth technical solution refers to the portion of the shell that is above the water surface when the shell floats on the water surface, and in the fifth technical solution refers to the portion of the shell that is always above the water surface after the shell floats on the water surface regardless of whether the in-position sensor is supported by the bottom wall of the cylinder body.

[0047] In the claims and the specification, unless otherwise specified, in the technical scheme that has a reference relationship with the fourth technical scheme or the fifth technical scheme, the terms "determined posture", "underwater part" and "above water part" should be used according to their interpretations in the fourth technical scheme or the fifth technical scheme respectively according to the reference relationship.

[0048] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings.

[0049] Embodiment 1

[0050] This embodiment provides a bathtub 1, such as Figure 1 As shown, it can not only automatically adjust the water temperature in the bathtub 1 according to the user's setting, but also automatically stop the water discharge to obtain the water level desired by the user. The bathtub 1 includes a bathtub body 2, a temperature measuring device 3, a water injection unit 17, a wireless unit 18 and a control unit 19.

[0051] Among them, Figure 1 and Figure 2 As shown, the temperature measuring device 3 includes a shell 4, a temperature sensing module 7, a capacitor module 9, an in-place sensor 12, a connecting cable 16, a control module 11 and a wireless module 8, and its size is configured to be suitable for being placed in the bathtub body 2, and the weight is counterweighted to float on the water surface in a determined posture and the shell 4 still floats on the water surface when the in-place sensor 12 is suspended in the water.

[0052] like Figure 1 and Figure 2 As shown, the housing 4 is used to accommodate the wireless module 8, the capacitor module 9 and the control module 11, and forms an above-water part 5 and an underwater part 6 when the temperature measuring device 3 floats on the water surface.

[0053] like Figure 1 , Figure 2 and Figure 3 As shown, the temperature sensing module 7 is used to measure the water temperature in the bathtub body 2 in real time and send a water temperature signal. It is installed on the housing 4 and has a temperature measuring end 21 extending out or fitting the underwater part 6. In this embodiment, the temperature measuring end 21 is arranged at the bottom of the underwater part 6 and fits the housing 4. In other embodiments, the temperature measuring end 21 can also extend anywhere in the underwater part 6.

[0054] The capacitor module 9 is installed in the housing 4 and is provided with a first conductor 10 attached to the inner wall of the underwater part 6 , which is suitable for sending the capacitance value corresponding to the first conductor 10 to the control module 11 in real time.

[0055] The in-place sensor 12 includes a body 13 and a posture sensing module 15. The body 13 is provided with a connecting portion 14, which is located at the top of the body 13 only when the in-place sensor 12 is suspended in water and is not located at the top of the body 13 when the in-place sensor 12 is not suspended in water (the specific process will be described later), which is achieved by counterweighting the body 13. The posture sensing module 15 is electrically connected or signal-connected to the control module 11, which is used to determine whether the connecting portion 14 is located at the top of the body 13, and sends an in-place signal to the control module 11 when the connecting portion 14 is located at the top of the body 13. In this embodiment, the posture sensing module 15 is connected to the control module 11 in an electrically connected manner (the method of using this connection manner will be described later), and it can use a posture sensor (this posture sensor is widely used in handheld mobile devices) or a force sensor (the reason why this sensor can be used will be described later), and the above two sensors are both existing technologies and will not be repeated here.

[0056] One end of the connecting cable 16 is connected to the connecting portion 14, and the other end is connected to the bottom of the underwater part 6 of the housing 4. In this embodiment, the connecting cable 16 includes a hollow rope made of a flexible material and an electrical connection line arranged in the hollow rope, so the attitude sensing module 15 can be connected to the control module 11 in an electrically connected manner. Through force analysis, it can be known that when the in-place sensor 12 is suspended in the water, it is subjected to gravity, buoyancy and the tension of the connecting cable 16, and the three forces are balanced. Therefore, the attitude sensing module 15 can also use a force sensor, which senses the tension of the connecting cable 16 and sends a position signal when the tension reaches a preset value. In addition, when the position sensor 12 is suspended in the water, the connecting rope 16 is subjected to the pulling force of the housing 4 and the position sensor 12 when the gravity and buoyancy of the connecting rope 16 are negligible. Compared with the case where the housing 4 is only subjected to gravity and buoyancy (the position sensor 12 is still supported by the bottom wall of the bathtub body 2 and is not suspended in the water), the portion of the housing 4 above the water surface will become smaller, while the portion below the water surface will become larger. Therefore, for this embodiment, in the process in which the portion of the housing 4 above the water surface gradually becomes smaller due to the rising water level, the term "above-water portion 5" is defined as the portion of the housing 4 that is always above the water surface during this process, and the term "underwater portion 6" is defined as the portion of the housing 4 that is always below the water surface during this process.

[0057] The control module 11 is installed in the housing 4, and is used to receive the water temperature signal sent by the temperature sensing module 7 and the arrival signal sent by the posture sensing module 15, and send water temperature information about the real-time water temperature and arrival prompt information about the water level to the wireless module 8. The control module 11 can also be used to receive the capacitance value corresponding to the first conductor 10 sent by the capacitance module 9, and control the temperature sensing module 7 and the wireless module 8 to work when the capacitance value is greater than a set threshold.

[0058] The wireless module 8 is installed in the housing 4 and is suitable for receiving water temperature information and arrival prompt information and sending them wirelessly. In this embodiment, the wireless module 8 is arranged on the top of the above-water part 5 of the housing 4 .

[0059] like Figure 1 and Figure 3 As shown, the water injection unit 17 is used for water injection, and is provided with a driving member (not shown in the figure) and a water mixing valve (not shown in the figure) for water injection. The driving member drives the water mixing valve to start and close the water injection and adjust the water temperature of the water injection. In this embodiment, the driving member can be a linear motor or a rotary motor. The water mixing valve belongs to the prior art, for example, a valve with the same function as in CN107859115A can be used.

[0060] The wireless unit 18 is adapted to receive the water temperature information and the arrival prompt information from the wireless module 8 and send them to the control unit 19. The wireless unit 18 can be connected by Bluetooth, WIFI or even 4G signal or other narrowband wireless connection methods.

[0061] The control unit 19 is suitable for receiving water injection instructions, setting information about the set water temperature, water temperature information and arrival prompt information. After receiving the water injection instruction, it controls the driving component to start water injection and adjust the injection water temperature according to the set water temperature. After receiving the water temperature information for the first time, it controls the driving component to act and adjust the injection water temperature according to the setting information of the set water temperature and the real-time water temperature information. After receiving the arrival prompt information, it controls the driving component to act to close the water injection.

[0062] When using, Figure 4 As shown, after inputting the setting information of the set water temperature to the control unit 19, a water injection instruction is input, and at this time, the water injection unit 17 starts to discharge water. Figure 5 As shown, the temperature measuring device 3 floats on the water surface in a certain posture, and the shell 4 forms an above-water part 5 and an underwater part 6 according to the water surface. When the first conductor 10 senses that it is in a water environment, the control module 11 will control the temperature measuring device 3 to enter a working state, and the temperature measuring device 3 begins to send water temperature information to the control unit 19 at a set interval (for example, 50ms). The control unit 19 then controls the hot and cold ratio of the water output by the water injection unit 17 to control the water temperature in the bathtub body 2. When the real-time water temperature is lower than the set water temperature, the control unit 19 will control the water injection temperature to be higher than the set water temperature so that the water temperature in the bathtub can approach the set water temperature. As the water level continues to rise, the shell 4 will begin to pull the connecting portion 14 of the in-place sensor 12 through the connecting cable 16 after straightening the connecting cable 16. Therefore, when the connecting portion 14 is pulled by the connecting cable 16 to the top of the body 13, the in-place sensor 12 is suspended in the water. Figure 1 As shown, at this time, the posture sensing module 15 will send an in-position signal to the control module 11 and then send an in-position prompt information to the control unit 19 through the wireless module 8 and the wireless unit 18. After receiving the in-position prompt information, the control unit 19 will control the water injection unit 17 to turn off the water outlet.

[0063] In this embodiment, since the temperature measuring device 3 is weighted to float on the water surface, and the water in the bathtub 1 often dissipates heat through evaporation, the real-time water temperature obtained by the temperature measuring device 3 is lower than the real-time water temperature obtained at the bottom of the bathtub 1. Therefore, it is more conducive to increasing the water temperature of the water injection so that the final water temperature in the bathtub 1 reaches or approaches the set water temperature. In this embodiment, since the shell 4 can drive the connecting portion 14 of the main body 13 through the connecting rope 16, as the water level rises, when the shell 4 drives the connecting portion 14 to the top of the main body 13, that is, when the in-position sensor 12 is suspended in the water, the posture sensing module 15 will send an in-position signal to the control module 11. Therefore, compared with sensing the liquid level through capacitance, the deployment difficulty is reduced. Since the length of the connecting rope 16 can be changed by tying a knot, the user can easily change the water level setting.

[0064] Embodiment 2

[0065] This embodiment also provides a bathtub 1, which can also automatically adjust the water temperature in the bathtub 1 and automatically stop the water discharge according to the user's settings. Different from the first embodiment, it uses a temperature measuring device 3 different from the temperature measuring device 3 in the first embodiment, and changes the configuration of the control unit 19 and the wireless unit 18.

[0066] The temperature measuring device 3 in this embodiment is different from the temperature measuring device 3 in the first embodiment in that Figure 6 As shown, it does not include the in-position sensor 12 and the connecting rope 16, and is configured in terms of weight so that the gravity it receives is greater than or equal to the buoyancy it receives when it is completely immersed in water. For this reason, the housing 4 of the temperature measuring device 3 in this embodiment cannot distinguish the above-water part 5 and the underwater part 6 through the water surface, and there is no special requirement for the setting position of the temperature sensing module 7 and the first conductor 10, while the wireless module 8 no longer receives and sends the in-position prompt information, and the control module 11 no longer receives the in-position signal and sends the in-position prompt information.

[0067] Accordingly, the wireless unit 18 of the bathtub 1 no longer receives and sends the in-place prompt information. The control unit 19 no longer controls the driving member to shut off the water filling by receiving the in-place prompt information, but can directly detect the water level in the bathtub body 2 and control the driving member to shut off the water filling when the water level reaches the preset water level value. Therefore, compared with the first embodiment, in this embodiment, Figure 7 As shown, the control unit 19 is also provided with a second conductor 20 attached to the outer wall of the bathtub body 2 at a preset water level position, and determines that the water level reaches the preset water level value by judging the capacitance value corresponding to the second conductor 20 and when it is greater than a set threshold.

[0068] In this embodiment, the control unit 19 can turn off the water injection when the water level in the bathtub body 2 reaches the preset water level value, without the need for manual operation by the user, which is simple and convenient. And because the preset water level value is fixed, the control unit 19 can control the water injection temperature so that when the water level reaches the preset water level value, the real-time water temperature also reaches the set water temperature at the same time, which is convenient for the user. In this embodiment, the liquid level control is realized by capacitive sensing of the liquid level, which can avoid opening a window on the inner wall of the bathtub body 2 and will not affect the yield of the bathtub 1.

[0069] In the first and second embodiments, the bathtub water filling methods used by the two bathtubs 1 are that the water temperature of the water filling is determined by the set water temperature and the real-time water temperature at least in part of the water filling stage, and the real-time water temperature is sent in real time by a temperature measuring device 3 placed in the bathtub body 2 in a working state through a wireless method, and the temperature measuring device 3 is configured to enter the working state only when it senses that it is in the water. And in the process of filling the two bathtubs 1, when the real-time water temperature is lower than the set water temperature, the water filling temperature is higher than the set water temperature.

[0070] In the bathtub 1 using the bathtub water filling method, since the real-time water temperature is sent in real time by a temperature measuring device 3 placed in the bathtub body 2, compared with the prior art, the bathtub water filling method can not only avoid the decrease in the yield rate caused by opening a window in the inner cylinder wall of the bathtub 1, but also avoid the waste of water and save costs. In addition, since the temperature measuring device 3 will only enter the working state when it senses that it is in the water, it is in a low power consumption state when it is in a waterless environment, which reduces power consumption and prolongs the use time after a single charge. During the water filling process of the bathtub 1 using the bathtub water filling method, the water temperature of the water filling is greater than the set water temperature when the real-time water temperature is less than the set water temperature, so the final water temperature in the bathtub 1 can reach the set water temperature by adjusting the water temperature of the water filling.

[0071] The above specification and description of the embodiments are used to explain the protection scope of the present application, but do not constitute a limitation on the protection scope of the present application.

Claims

1. A temperature measuring device (3), characterized in that: It is configured to be placed in a bathtub body (2) and is weighted so that the gravity it receives is greater than or equal to the buoyancy it receives when it is fully immersed, and comprises: Housing (4); A temperature sensing module (7) is installed on the housing (4) and is suitable for measuring the water temperature in the bathtub body (2) in real time and sending a water temperature signal; A wireless module (8) is installed in the housing (4) and is suitable for receiving water temperature information and sending it wirelessly; A capacitance module (9) installed in the housing (4) and provided with a first conductor (10) attached to the inner wall of the housing (4), and suitable for sending a capacitance value corresponding to the first conductor (10) in real time; and A control module (11) is installed in the housing (4) and controls the temperature sensing module (7) and the wireless module (8) to operate when the capacitance value is greater than a set threshold value, receives the water temperature signal and sends the water temperature information about the real-time water temperature to the wireless module (8).

2. A temperature measuring device (3), characterized in that: It is configured to be placed in a bathtub body (2) and is weighted to float on the water surface in a certain posture, and comprises: A housing (4) which forms an above-water part (5) and an underwater part (6) when the temperature measuring device (3) floats on the water surface; a temperature sensing module (7), which is mounted on the housing (4) and is provided with a temperature measuring end (21) extending out of or in contact with the underwater portion (6), and is suitable for measuring the water temperature in the bathtub body (2) in real time and sending a water temperature signal; a wireless module (8), which is mounted in the housing (4), and is suitable for receiving water temperature information and sending it wirelessly; a capacitance module (9) installed in the housing (4) and provided with a first conductor (10) attached to the inner wall of the underwater part (6), and adapted to transmit the capacitance value corresponding to the first conductor (10) in real time; and A control module (11) is installed in the housing (4) and controls the temperature sensing module (7) and the wireless module (8) to operate when the capacitance value is greater than a set threshold value, receives the water temperature signal and sends the water temperature information about the real-time water temperature to the wireless module (8).

3. The temperature measuring device (3) according to claim 2, characterized in that: It also includes a position sensor (12) and a connecting rope (16); it is configured so that when the position sensor (12) is suspended in the water, the housing (4) still floats on the water surface; The in-position sensor (12) comprises a body (13) and a posture sensing module (15), wherein the body (13) is provided with a connecting portion (14), and the connecting portion (14) is located at the top of the body (13) only when the in-position sensor (12) is suspended in water; the posture sensing module (15) is electrically connected or signal-connected to the control module (11), and is suitable for judging whether the connecting portion (14) is located at the top of the body (13), and sending an in-position signal to the control module (11) when the connecting portion (14) is located at the top of the body (13); One end of the connecting rope (16) is connected to the connecting portion (14), and the other end is connected to the bottom of the underwater part (6); The wireless module (8) is also suitable for receiving the in-place prompt information and sending it wirelessly; The control module (11) also receives the arrival signal and sends the arrival prompt information to the wireless module (8).

4. A bathtub (1) water filling system, characterized in that it comprises: A water injection unit (17) is provided with a driving member and a water mixing valve for water injection, wherein the driving member drives the water mixing valve to start and close water injection and adjust the water temperature of the injected water; A temperature measuring device (3) as claimed in claim 1 or 2; A wireless unit (18), which is suitable for receiving the water temperature information from the wireless module (8) and sending it; and A control unit (19) adapted to receive a water injection instruction, setting information on a set water temperature, and the water temperature information; After receiving the water injection instruction, it controls the driving component to start water injection and adjusts the injection water temperature according to the set water temperature. After receiving the water temperature information for the first time, it controls the driving component to operate and adjust the injection water temperature according to the set water temperature and the real-time water temperature.

5. The bathtub (1) filling system as claimed in claim 4, characterized in that: The control unit (19) is also suitable for detecting the water level in the bathtub body (2) and controlling the driving member to operate to close the water injection when the water level reaches a preset water level value.

6. The bathtub (1) filling system according to claim 5, characterized in that: The control unit (19) is provided with a second conductor (20) attached to the outer wall of the bathtub body (2) at a preset water level position, and determines that the water level reaches the preset water level value when the capacitance value corresponding to the second conductor (20) is greater than a set threshold value.

7. A bathtub filling system, characterized in that it comprises: A water injection unit (17) is provided with a driving member and a water mixing valve for water injection, wherein the driving member drives the water mixing valve to start and close water injection and adjust the water temperature of the injected water; A temperature measuring device (3) as claimed in claim 3; A wireless unit (18) adapted to receive and send the water temperature information and the arrival prompt information from the wireless module (8); and A control unit (19) adapted to receive a water injection instruction, setting information on setting the water temperature, the water temperature information and the arrival prompt information; After receiving the water injection instruction, it controls the driving component to start the water injection and adjust the water temperature according to the set water temperature. After receiving the water temperature information for the first time, it controls the driving component to move and adjust the water temperature according to the set water temperature and the real-time water temperature. After receiving the arrival prompt information, it controls the driving component to move to close the water injection.

8. A bathtub (1), characterized in that: The invention comprises a bathtub body (2) and a bathtub water filling system as claimed in any one of claims 4 to 7.

9. A method for filling a bathtub, wherein the water temperature in at least part of the filling stage is determined by the set water temperature and the real-time water temperature, characterized in that: The real-time water temperature is transmitted in real time by a temperature measuring device (3) placed in the bathtub body (2) through wireless transmission in a working state, and the temperature measuring device (3) is as described in any one of claims 1 to 3, and the temperature measuring device (3) is configured to enter a working state when it senses that it is located in water.

10. A bathtub filling method as claimed in claim 9, characterized in that: When the real-time water temperature is lower than the set water temperature, the injection water temperature is higher than the set water temperature.

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