CN118089241A - Liquid heating device applied to massage SPA pool and temperature control method thereof - Google Patents
Liquid heating device applied to massage SPA pool and temperature control method thereof Download PDFInfo
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- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
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- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
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- 239000011593 sulfur Substances 0.000 description 4
- 229910000881 Cu alloy Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241001281643 Solus Species 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
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- 230000003238 somatosensory effect Effects 0.000 description 1
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Abstract
The invention discloses a liquid heating device applied to a massage SPA water pool and a temperature control method thereof. The liquid heating device further comprises a first temperature sensor and a second temperature sensor, the first temperature sensor can detect the temperature of liquid before heating, the second temperature sensor can detect the temperature of the liquid after the liquid is heated for a period of time through the heating core, the control unit can accurately control the working states of the heating core and the water pump according to the temperature information of the two positions, the liquid heating device can be ensured to be applied to a massage SPA water tank and an entertainment water tank, the water temperature in the tank is accurately controlled, the temperature control precision is higher, and the liquid heating device has the advantage of high use safety.
Description
Technical Field
The invention relates to the technical field of liquid heating, in particular to a liquid heating device applied to a massage SPA pool and a temperature control method thereof.
Background
The liquid heating device is an important part in household appliances such as massage SPA (Solus Par Agula, hydrotherapy) pool, entertainment pool, water dispenser, foot tub and other industrial products, especially an important part for adjusting the water temperature of the pool. Existing liquid heating apparatus include a heat conductor and PTC (Positive Temperature Coefficient) heating elements. The heat conducting body is internally provided with a plurality of pipelines, part of the pipelines are used for placing the PTC heating elements, and the other part of the pipelines are used for liquid circulation. When the liquid heating device is used for autonomous temperature adjustment, the temperature of the liquid in the shell of the liquid heating device is detected through the mechanical reset temperature controller arranged on the side wall of the shell of the liquid heating device, so that overtemperature is prevented.
The specific structure of the mechanical reset temperature controller is shown in figure 1, wherein the left side of the mechanical reset temperature controller is immersed in water, and the right side of the mechanical reset temperature controller is provided with a wiring terminal and a reset button. The two terminals are connected by default. When the water temperature reaches a preset value (e.g., 50.+ -. 3 ℃), the two terminals are disconnected. The two terminals remain disconnected until they are turned back on by pressing the reset button. Because the temperature controller is conducted heat by the copper alloy shell to the temperature sensing element, the heated temperature sensing element is bent and deformed slowly to realize power on and off, the temperature controller has the following defects:
1. is insensitive to temperature and has large errors (for example, the action temperature needs to be plus or minus 3 ℃, and the large water temperature error range is enough to cause obvious difference in somatosensory.
2. The temperature sensing element is difficult to produce and control and has limited use times (such as 6000 times). Once the temperature sensing element fails, the overtemperature protection function fails, and the user is protected by one safety.
3. Because the temperature sensing element is not sensitive enough in action, the part of the temperature controller, which is contacted with water, adopts a copper alloy shell, and the copper alloy shell is easy to corrode and damage in water.
4. After the action, a certain temperature difference (for example, more than 8 degrees) is needed to be achieved to execute the reset action for re-engagement, and the use is not convenient.
Therefore, the liquid heating apparatus in the prior art has problems of low accuracy of temperature control and low safety.
Disclosure of Invention
The invention aims to solve the problems of low temperature control accuracy and low safety of a liquid heating device in the prior art.
In view of the above technical problems, embodiments of the present invention provide a liquid heating apparatus, which includes a hollow heating chamber, a water pump in fluid communication with the heating chamber, a heating core disposed in the heating chamber, and a liquid inlet and a liquid outlet respectively in communication with the interior of the heating chamber.
The liquid heating device further comprises a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is arranged on the shell of the liquid heating device and is closer to the liquid inlet than the second temperature sensor, and a probe of the first temperature sensor penetrates through the side wall of the shell and stretches into the heating cavity; and
The second temperature sensor is spaced apart from the first temperature sensor on the housing in a length direction of the housing, and a probe of the second temperature sensor is at least partially located within the heating chamber.
By adopting the technical scheme, the liquid heating device provided by the embodiment comprises the first temperature sensor and the second temperature sensor, and the liquid temperature in the heating cavity and the liquid temperature at the liquid inlet are respectively acquired by the first temperature sensor and the second temperature sensor. The first temperature sensor can detect the temperature of liquid before heating, the second temperature sensor can detect the temperature of the liquid after the liquid is heated for a period of time through the heating core body, the control element of the liquid heating device can accurately control the working states of the heating core body and the water pump according to the temperature information of the two positions, and the liquid heating device can be ensured to accurately control the water temperature in the pool when being applied to the massage SPA pool and the entertainment pool.
In addition, because temperature sensor is higher in detection sensitivity than mechanical temperature controller, and need not to wait for a long time before resetting, it is more convenient to use, especially utilize the probe of second temperature sensor to run through the lateral wall of this casing and stretch into in this heating chamber, gather the liquid temperature of this heating chamber in the corresponding position, when liquid temperature (for example temperature) is too high in the heating chamber, can detect temperature information in the shorter time for liquid heating device's control element can in time control heating core and water pump stop work, prevent that the too high temperature from scalding the user or leading to other components (for example heating core and water pump) high temperature burnout.
In particular, the temperature sensing sensitivity of the probes through the first temperature sensor and the second temperature sensor, for example, the control precision can reach 0.5 degree, long waiting is not needed before resetting, the use is more convenient, and the temperature control precision of the liquid heating device is further improved. In addition, as the first temperature sensor and the second temperature sensor are both free of movable parts, the use times are millions, so that the product can keep high reliability without frequent maintenance, and the use stability of the liquid heating device is further improved.
Therefore, the liquid heating device provided by the embodiment has the advantages of higher temperature control precision and good use safety.
According to another embodiment of the present invention, the liquid heating apparatus further includes a protective cover covering each of the first temperature sensor and the second temperature sensor; and
The protective cover is made of stainless steel materials.
By adopting the technical scheme, the temperature sensor can be protected by arranging the protective cover on the periphery of the temperature sensor, so that the influence of environmental factors on the detection performance of the temperature sensor is avoided, and the use stability of the liquid heating device can be further improved.
In addition, the protective cover is made of stainless steel, and the corrosion resistance of the stainless steel is better, so that the corrosion resistance of the temperature sensor can be improved, and particularly, the stable detection performance can be maintained when the liquid heating device heats corrosive liquid (such as sulfur water). Therefore, by adopting the structure, the temperature control accuracy of the liquid heating device can be improved, the application range of the liquid heating device can be also improved, for example, common water can be heated, and corrosive sulfur water can be heated.
According to the liquid heating device provided by the other embodiment of the invention, the peripheries of the first temperature sensor and the second temperature sensor are provided with external threads, wherein the first temperature sensor and the second temperature sensor are fixedly connected with corresponding threaded holes on the side wall of the shell through the external threads in a threaded manner; and
A sealing member is arranged between the first temperature sensor and the shell and between the second temperature sensor and the shell.
By adopting the technical scheme, because the first temperature sensor and the second temperature sensor are electronic products and are required to be replaced or maintained after long-time use, the liquid heating device is maintained by detachably mounting the first temperature sensor and the second temperature sensor on the shell through the connecting nut.
In addition, set up the sealing member between first temperature sensor and the casing to and between second temperature sensor and the casing, guarantee the leakproofness of heating cavity like this, prevent that heating cavity from having liquid to flow out.
According to another embodiment of the present invention, a liquid heating apparatus is provided, wherein a heating chamber includes a first liquid flow channel and a second liquid flow channel extending along a length direction of a housing and being independent of each other, an outlet of the first liquid flow channel is communicated with an inlet of the second liquid flow channel, the liquid inlet is disposed at an inlet position of the first liquid flow channel, and the liquid outlet is disposed at an outlet position of the second liquid flow channel.
By adopting the technical scheme, the liquid inlet is arranged at the inlet position of the first liquid flow channel, the liquid outlet is arranged at the outlet position of the second liquid flow channel, and the circulation time of the liquid to be heated in the heating cavity is shortened by utilizing the structure, so that the heating efficiency is better.
In addition, through utilizing first temperature sensor and this second temperature sensor to detect the liquid temperature of liquid inlet and liquid outlet department, utilize the inflow liquid that this structure can gather or flow out liquid, the temperature of liquid after the heating, the heat loss of two places liquid is less, need not to compensate, is favorable to further promoting the accuracy of liquid heating device temperature control.
According to another embodiment of the invention, the liquid heating device further comprises an alarm unit and a switch assembly, wherein the switch assembly is respectively connected with the heating core body, the water pump and the alarm unit.
By adopting the technical scheme, the working condition of the liquid heating device can be more conveniently known by a user through the arrangement of the alarm unit, and particularly when the liquid heating device fails, the user can timely find and process the liquid heating device so as to reduce the probability of occurrence of personal safety hidden trouble.
In addition, through the heating core of switch module control, this water pump and this alarm unit, it is not only connected simpler, and the structure is simpler, and the cost is lower.
According to another embodiment of the invention, the liquid heating device further comprises a control unit, wherein the signal output end of the control unit is respectively and electrically connected with the heating core body and the signal input end of the water pump; and
The first temperature sensor is used for collecting the temperature of the liquid in the heating chamber near the liquid inlet and generating a first temperature signal; and
The second temperature sensor is used for collecting the liquid temperature at the corresponding position in the heating chamber and generating a second temperature signal; the signal input end of the control unit is respectively in communication connection with the signal output ends of the first temperature sensor and the second temperature sensor so as to acquire a first temperature signal and a second temperature signal; the control unit is configured to control the operating states of the heating core and the water pump according to the first temperature signal and the second temperature signal.
By adopting the technical scheme, the liquid temperature in the heating cavity and the liquid temperature at the liquid inlet are respectively acquired by the first temperature sensor and the second temperature sensor. The first temperature sensor can detect the temperature of liquid before heating, the second temperature sensor can detect the temperature of the liquid after the liquid is heated for a period of time through the heating core body, and the detected two temperature information are respectively transmitted to the control unit, the control unit can accurately control the working states of the heating core body and the water pump according to the two temperature information (the first temperature signal and the second temperature signal), and the liquid heating device can be ensured to accurately control the water temperature in the pool when being applied to a massage SPA pool and an entertainment pool.
According to the liquid heating device provided by the other embodiment of the invention, when the first temperature signal exceeds the first detection range and/or the second temperature signal exceeds the second detection range, the control unit controls the heating core and the water pump to be simultaneously closed, and controls the alarm unit to alarm; or alternatively
When the heating core works, if the difference value of the first temperature signal and the second temperature signal is continuously smaller than a first temperature difference threshold value in a first time range, the control unit controls the water pump to be turned off, and after the water pump is turned off, if the difference value of the first temperature signal and the second temperature signal is continuously smaller than the first temperature difference threshold value in a second time range, the control unit controls the heating core to be turned off and controls the alarm unit to alarm; or alternatively
When the water pump works, if the difference value between the first temperature signal and the second temperature signal is larger than a second temperature difference threshold value, the alarm unit is controlled to alarm.
By adopting the technical scheme, because the first temperature signal and the second temperature signal acquired by the first temperature sensor and the second temperature sensor in the embodiment are specific numerical values, the accuracy of temperature control of the liquid heating device can be further improved by comparing and analyzing the specific numerical values corresponding to the first temperature signal and the second temperature signal.
According to another embodiment of the present invention, there is provided a liquid heating apparatus, wherein
The first detection range comprises 4-48 ℃;
The second detection range comprises 10-51 ℃;
The first time range comprises 0 to 3 hours;
The second time range comprises 0-15S;
the first temperature difference threshold comprises 0.3-0.7 ℃; and
The second temperature difference threshold setting comprises 3-7 ℃.
According to another embodiment of the present invention, a liquid heating apparatus is provided, in which a first temperature sensor and a second temperature sensor are disposed at a predetermined distance from each other, and the second temperature sensor is fixedly connected to the housing, and the predetermined distance from the first temperature sensor in a longitudinal direction of the housing satisfies the following conditions:
1/3 L.ltoreq.m.ltoreq.2/3L; wherein,
M is the predetermined distance;
L is the length of the housing.
By adopting the technical scheme, the distance between the second temperature sensor and the first temperature sensor is set to be 1/3-2/3 of the length of the shell, so that the problem that the detection accuracy is influenced due to overlarge heat loss of the liquid with overlong distance is avoided.
According to the liquid heating device provided by the other embodiment of the invention, at least one pair of heating cores are arranged in the heating cavity, the heating cores are PTC heating cores, each PTC heating core sequentially comprises a PTC ceramic sheet, two electrode sheets, a first insulating layer, a protective layer and a second insulating layer from inside to outside, the PTC ceramic sheet is arranged between the two electrode sheets, the first insulating layer, the protective layer and the second insulating layer wrap the PTC ceramic sheet and the two electrode sheets, and the protective layer is made of metal.
According to another embodiment of the invention, a massage SPA pool comprises a water containing cavity and a liquid heating device with the structure; wherein,
The liquid inlet, the liquid outlet, the water pump and the water containing cavity of the liquid heating device are sequentially communicated to form a fluid loop.
By adopting the technical scheme, the liquid heating device with the structure has the advantages of higher temperature control precision and good use safety. When the liquid heating device with the structure is adopted in the massage SPA water tank, the massage SPA water tank is more convenient to use and better in safety. Especially, the method is beneficial to improving the experience of the user.
According to another embodiment of the invention, a massage SPA sink is provided, the liquid heating apparatus having an apparatus housing, the heating chamber, the water pump, and the control unit being disposed within the apparatus housing; and
The liquid inlet and the liquid outlet of the liquid heating device extend out from one side of the device shell, which is close to the water containing cavity, and are in fluid communication with the inside of the water containing cavity through connecting pipelines.
By adopting the technical scheme, the heating chamber, the water pump and the control unit are arranged on the device shell, so that the heating chamber, the water pump and the control unit are protected, and the service performance of the liquid heating device is prevented from being influenced by environmental factors.
And the liquid inlet and the liquid outlet extend out from one side of the device shell, which is close to the water containing cavity, so that the liquid heating device is convenient to be connected with the water tank.
According to another embodiment of the present invention, there is provided a temperature control method of a liquid heating apparatus, the temperature control method being applied to the liquid heating apparatus having the above-described structure, including:
The control unit acquires first temperature information and second temperature information;
Judging whether the first temperature information and the second temperature information meet a preset first protection condition,
If yes, closing the heating core body and controlling the alarm unit to alarm; otherwise the first set of parameters is selected,
Judging whether the first temperature information and the second temperature information meet a preset second protection condition, if so, closing the heating core body, otherwise,
And opening the heating core body.
According to another embodiment of the present invention there is provided a method of controlling the temperature of a liquid heating apparatus,
When the first temperature information and the second temperature information meet the preset first protection condition, the heating core body and the water pump are turned off, and the alarm unit is controlled to alarm;
And when the first temperature information and the second temperature information are judged to meet the preset second protection condition, the heating core body and the water pump are turned off.
According to another embodiment of the present invention, a method for controlling a temperature of a liquid heating apparatus, the first protection condition includes:
the first temperature information exceeds the first detection range and/or the second temperature information exceeds the second detection range.
According to another embodiment of the present invention, a method for controlling a temperature of a liquid heating apparatus is provided, wherein the second protection condition includes:
when the heating core works, the difference value between the first temperature information and the second temperature information is continuously smaller than a first temperature difference threshold value in a first time range, and after the water pump is turned off, if the difference value between the first temperature information and the second temperature information is continuously smaller than the first temperature difference threshold value in a second time range.
According to another embodiment of the present invention, there is provided a temperature control method of a liquid heating apparatus, wherein the second protection condition further includes:
When the water pump works, the difference value between the first temperature information and the second temperature information is larger than a second temperature difference threshold value.
The invention has the beneficial effects that:
The invention provides a liquid heating device applied to a massage SPA water pool and a temperature control method thereof, wherein the liquid heating device comprises a hollow heating chamber, a water pump in fluid communication with the heating chamber, and a heating core body arranged in the heating chamber, wherein one end part of the heating chamber along the length direction of a shell is provided with a liquid inlet and a liquid outlet which are communicated with the inside. The liquid heating apparatus further comprises a control unit, a first temperature sensor and a second temperature sensor. The liquid temperature in the heating chamber and the liquid temperature at the liquid inlet are respectively acquired by using a first temperature sensor and a second temperature sensor. The first temperature sensor can detect the temperature of liquid before heating, the second temperature sensor can detect the temperature of the liquid after the liquid is heated for a period of time through the heating core body, and the detected two temperature information are respectively transmitted to the control unit, the control unit can accurately control the working states of the heating core body and the water pump according to the two temperature information (the first temperature signal and the second temperature signal), and the liquid heating device can be ensured to accurately control the water temperature in the pool when being applied to a massage SPA pool and an entertainment pool.
And, because electron temperature acquisition unit is higher in detection sensitivity than mechanical type temperature controller, and need not to wait for a long time before resetting, it is more convenient to use, especially utilize the probe of second temperature sensor to run through the lateral wall of this casing and stretch into in this heating chamber, gather the liquid temperature of this heating chamber in the corresponding position, when liquid temperature (for example temperature) is too high in the heating chamber, can detect and feed back corresponding second temperature signal to the control unit in the shorter time for the control unit can in time control heating core and water pump stop work, prevents that the too high temperature from scalding the user or leading to other components (for example heating core and water pump) high temperature to burn. Not only the temperature control precision is higher, but also the use safety is good.
Additional features and corresponding advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a prior art mechanical reset thermostat;
fig. 2 is a schematic perspective view of a liquid heating apparatus according to embodiment 1 of the present invention;
Fig. 3 is a schematic perspective view of a heating core in the liquid heating apparatus according to embodiment 1 of the present invention;
FIG. 4 is a schematic cross-sectional view of a liquid heating apparatus according to embodiment 1 of the present invention;
Fig. 5 is a schematic perspective view of a first temperature sensor in the liquid heating apparatus according to embodiment 1 of the present invention;
FIG. 6 is a control schematic diagram of a liquid heating apparatus according to embodiment 1 of the present invention;
Fig. 7 is a schematic perspective view of a massage SPA pool according to embodiment 2 of the present invention;
fig. 8 is a flowchart of a temperature control method of the liquid heating apparatus according to embodiment 3 of the present invention.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present invention with specific examples. While the description of the invention will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the invention described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the invention. The following description contains many specific details for the purpose of providing a thorough understanding of the present invention. The invention may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present embodiment, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present invention.
The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present embodiment can be understood in a specific case by those of ordinary skill in the art.
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 2 to 6, embodiment 1 of the present invention provides a liquid heating apparatus 10, the liquid heating apparatus 10 comprising a hollow heating chamber 110, a water pump 120 in fluid communication with the heating chamber 110, and a heating core 130 provided in the heating chamber 110, the heating chamber 110 having a liquid inlet 111 and a liquid outlet 112 in communication with the inside along one end of the length direction of the housing thereof.
The liquid heating apparatus 10 further comprises a control unit 140, a first temperature sensor 150 and a second temperature sensor 160.
Specifically, in embodiment 1, as shown in fig. 6, the signal output ends of the control unit 140 are electrically connected to the signal input ends of the heating core 130 and the water pump 120, respectively; the first temperature sensor 150 is disposed on the housing and corresponds to the liquid inlet 111, and as shown in fig. 2, a probe of the first temperature sensor 150 extends into the heating chamber 110 through a sidewall of the housing, collects a temperature of the liquid in the heating chamber 110 near the liquid inlet 111, and generates a first temperature signal. The second temperature sensor 160 is disposed on the housing and is separated from the first temperature sensor 150 along the length direction of the housing, and is specifically spaced apart from the first temperature sensor 150 by a predetermined distance, and a probe of the second temperature sensor 160 penetrates through a sidewall of the housing and extends into the heating chamber 110, and collects the liquid temperature at a corresponding position in the heating chamber 110 and generates a second temperature signal.
More specifically, in an embodiment, the control unit 140 may include a controller and a control switch, where the controller is electrically connected to the heating core 130 and the water pump 120 through the control switch to control the working states of the heating core 130 and the water pump 120.
Further, in embodiment 1, the control unit 140 may also be a controller with a power control function, and the controller is directly electrically connected to the heating core 130 and the water pump 120 to control the working states of the heating core 130 and the water pump 120.
More specifically, in embodiment 1, the signal input terminals of the control unit 140 are respectively connected to the signal output terminals of the first temperature sensor 150 and the second temperature sensor 160 in a communication manner, so as to obtain the first temperature signal and the second temperature signal, and control the operating states of the heating core 130 and the water pump 120 according to the first temperature signal and the second temperature signal.
In the liquid heating apparatus 10 according to embodiment 1 of the present invention, since the liquid heating apparatus includes the control unit 140, the first temperature sensor 150 and the second temperature sensor 160, the liquid temperature in the heating chamber 110 and the liquid temperature at the liquid inlet 111 are collected by the first temperature sensor 150 and the second temperature sensor 160, respectively. The first temperature sensor 150 may detect the temperature of the liquid before heating, the second temperature sensor 160 may detect the temperature of the liquid after the liquid is heated by the heating core 130 for a period of time, and respectively transmit the detected two temperature information to the control unit 140, where the control unit 140 may accurately control the working states of the heating core 130 and the water pump 120 according to the two temperature information (the first temperature signal and the second temperature signal), so as to ensure that the water temperature in the pool is accurately controlled when the liquid heating apparatus 10 is applied to a massage SPA pool or an entertainment pool.
Further, in embodiment 1, compared with a mechanical temperature controller, the electronic temperature acquisition unit has higher detection sensitivity, and does not need to wait for a long time before resetting, so that the use is more convenient, especially, the probe of the second temperature sensor 160 is used to extend into the heating chamber 110 through the side wall of the housing, collect the liquid temperature at the corresponding position in the heating chamber 110, and when the liquid temperature (such as water temperature) in the heating chamber 110 is too high, the corresponding second temperature signal can be detected and fed back to the control unit 140 in a shorter time, so that the control unit 140 can timely control the heating core 130 and the water pump 120 to stop working, and prevent the user or other components (such as the heating core 130 and the water pump 120) from being burnt due to the too high temperature.
In summary, the liquid heating apparatus 10 provided in embodiment 1 has not only higher temperature control accuracy but also an advantage of good use safety.
Preferably, in the liquid heating apparatus 10 provided in embodiment 1 of the present invention, as shown in fig. 5, the first temperature sensor 150 and the second temperature sensor 160 (refer to the structure shown in fig. 5 in particular) may be configured as NTC (Negative Temperature Coefficient Sensor) temperature-sensing probes.
Further, the second temperature sensor 160 is disposed at a middle region of the housing in the length direction and is located on the same side wall of the housing as the first temperature sensor 150.
Specifically, in embodiment 1, the probes of the first temperature sensor 150 and the second temperature sensor 160 are set as NTC temperature sensing probes, and since the NTC temperature sensing probes are sensitive, for example, the control accuracy can reach 0.5 degrees, long waiting is not needed before resetting, and the use is more convenient, which is beneficial to further improving the temperature control accuracy of the liquid heating apparatus 10.
More specifically, in embodiment 1, since the NTC temperature sensing probe is a semiconductor element and has no movable parts and is used millions of times, the product can maintain high reliability without frequent maintenance, which is beneficial to further improving the stability of the liquid heating apparatus 10.
It is further preferred that the first temperature sensor 150 and the second temperature sensor 160 further comprise a protective cover 15A covering each temperature sensor, respectively.
In embodiment 1 of the present invention, with this structure, by providing the protective cover 15A on the outer periphery of the NTC temperature sensing probe (as shown in fig. 5, the NTC temperature sensing probe is provided with the protective cover 15A), the NTC temperature sensing probe can be protected, the detection performance of the NTC temperature sensing probe is prevented from being affected by environmental factors, and the use stability of the liquid heating apparatus 10 can be further improved.
Further preferably, in the liquid heating apparatus 10 provided in embodiment 1 of the present invention, the shield is made of a stainless steel material.
Specifically, in embodiment 2 of the present invention, the protective cover is made of stainless steel, and the corrosion resistance of the stainless steel is better, so that the corrosion resistance of the NTC temperature sensing probe can be improved, and especially, when the liquid heating device 10 heats a corrosive liquid (such as sulfur water), stable detection performance can be maintained. Therefore, with this structure, not only the temperature control accuracy of the liquid heating apparatus 10 can be improved, but also the application range of the liquid heating apparatus 10 can be improved, for example, not only ordinary water but also corrosive sulfur water can be heated.
Preferably, in the liquid heating apparatus 10 provided in embodiment 1 of the present invention, the outer peripheries of the first temperature sensor 150 and the second temperature sensor 160 are provided with external threads 15B, wherein the first temperature sensor 150 and the second temperature sensor 160 are screwed to corresponding threaded holes on the side wall of the housing through the external threads 15B, or may be connected to corresponding threaded holes on the side wall of the housing through a connection nut.
In embodiment 1 of the present invention, with this configuration, since both the first temperature sensor 150 and the second temperature sensor 160 are electronic products, replacement or maintenance is required after long-term use, which is advantageous for maintenance of the liquid heating apparatus 10 by detachably mounting it to the housing by the nut.
Further preferably, a seal is provided between the first temperature sensor and the housing, and between the second temperature sensor and the housing, respectively.
Specifically, a sealing element (not shown in the figure) is arranged between the protective cover outside the NTC temperature sensing probe and the threaded hole of the shell.
Specifically, in embodiment 1 of the present invention, by providing a seal between the screw holes of the housing, the tightness of the heating chamber 110 is ensured in such a manner that no liquid flows out of the heating chamber 110.
In embodiment 1 of the present invention, a sealing member such as a waterproof tape or a foam may be provided, and embodiment 1 of the present invention is preferably provided as a waterproof tape (not shown).
Preferably, in the liquid heating apparatus 10 provided in embodiment 1 of the present invention, as shown in fig. 2, a first liquid flow path 11A and a second liquid flow path 11B which extend along the length direction of the housing and are independent of each other are formed in the housing, the outlet of the first liquid flow path 11A communicates with the inlet of the second liquid flow path 11B, the liquid inlet 111 is provided at the inlet position of the first liquid flow path 11A, and the liquid outlet 112 is provided at the outlet position of the second liquid flow path 11B.
More specifically, with respect to the housing, the liquid inlet 111 and the liquid outlet 112 are provided on two side walls of the housing perpendicular to each other at one end of the housing in the length direction thereof, and one of the liquid inlet 111 and the liquid outlet 112 is provided on the same side wall as the first temperature sensor 150 and the second temperature sensor 160.
Further preferably, the liquid inlet 111 is provided with a filtration module, the water pump 120 being in fluid communication with the heating chamber 110 through the liquid inlet 111.
Specifically, in embodiment 1 of the present invention, the liquid inlet 111 is disposed at the inlet position of the first liquid flow channel 11A, the liquid outlet 112 is disposed at the outlet position of the second liquid flow channel 11B, and this structure is advantageous in terms of the circulation time of the liquid to be heated in the heating chamber 110, and the heating efficiency is improved.
More specifically, in embodiment 1 of the present invention, by disposing one of the liquid inlet 111 and the liquid outlet 112 on the same side wall as the first temperature sensor 150 and the second temperature sensor 160, the heat loss of the inflow liquid or outflow liquid and the heated liquid collected by the structure is smaller, and no compensation is needed, which is beneficial to further improving the accuracy of temperature control of the liquid heating device 10.
Preferably, in the liquid heating apparatus 10 provided in embodiment 1 of the present invention, as shown in fig. 6, an alarm unit 170 may be provided, specifically, as a horn, a buzzer, a warning lamp, etc., where a signal input end of the alarm unit 170 is communicatively connected to a signal output end of the control unit 140.
Specifically, in embodiment 1 of the present invention, by providing the alarm unit 170, a user can more conveniently understand the working condition of the liquid heating apparatus 10, especially when a fault occurs, the user can find and process in time, so as to reduce the probability of occurrence of personal safety hazards.
In use, the liquid heating apparatus 10 according to embodiment 1 of the present invention is provided with the first temperature sensor 150 and the second temperature sensor 160 simultaneously acquiring the corresponding first temperature signal and second temperature signal. And feeds back to the control unit 140, wherein the control unit 140 is a controller with a calculation and analysis function, the first temperature signal and the second temperature signal are electric signals, and the temperature values corresponding to the corresponding time and position are received by the control unit 140, and the control unit 140 receives the first temperature signal and the second temperature signal:
In one operating state, the state is a state in which both the heating core 130 and the water pump 120 are activated:
It may be that, at the control unit 140, it is determined that: when the value corresponding to the first temperature signal exceeds the first detection range and the value corresponding to the second temperature signal exceeds the second detection range, the control unit 140 controls the heating core 130 and the water pump 120 to be turned off simultaneously, and controls the alarm unit 170 to alarm. Specific:
The control unit 140 may determine that: when the value corresponding to the first temperature signal exceeds the first detection range, the control unit 140 controls the heating core 130 and the water pump 120 to be turned off simultaneously, and controls the alarm unit 170 to alarm.
Further, when the control unit 140 determines that: when the value corresponding to the second temperature signal exceeds the second detection range, the control unit 140 controls the heating core 130 and the water pump 120 to be turned off simultaneously, and controls the alarm unit 170 to alarm.
In another operating state, the state is a state in which the heating core 130 is activated:
It may be that, at the control unit 140, it is determined that: when the difference between the first temperature signal and the second temperature signal is continuously smaller than the first temperature difference threshold in the first time range, the control unit 140 controls the water pump 120 to be turned off, and after the water pump 120 is turned off, if the difference between the first temperature signal and the second temperature signal is continuously smaller than the first temperature difference threshold in the second time range, the control unit 140 controls the heating core 130 to be turned off and controls the alarm unit 170 to alarm.
In another working state, the state is a state that the water pump is started:
it may be that, at the control unit 140, it is determined that: and when the difference value between the first temperature signal and the second temperature signal is greater than a second temperature difference threshold value, the alarm unit 170 is controlled to alarm.
In this scheme, since the first temperature signal and the second temperature signal acquired by the first temperature sensor 150 and the second temperature sensor 160 in embodiment 1 are specific values, the accuracy of temperature control of the liquid heating apparatus 10 can be further improved by comparing and analyzing the specific values corresponding to the first temperature signal and the second temperature signal.
And through the judging mode based on the difference value between the first temperature signal and the second temperature signal being smaller than the first temperature difference threshold value in the first time range continuously, the problem that the whole liquid heating device 10 is forced to alarm due to the small-range influence of environmental factors can be avoided, and thus the overall temperature control accuracy and the use safety of the liquid heating device 10 can be further and accurately improved.
Preferably, in the embodiment 1,
The first detection range is 4-48 ℃;
the second detection range is 10-51 ℃;
the first time range is 0-3 h;
the second time range is 0-15S;
the first temperature difference threshold value is 0.3-0.7 ℃; and
The second temperature difference threshold is set to 3-7 ℃.
Specifically, in a state where both the heating core 130 and the water pump 120 are activated:
At the control unit 140, it is determined that: when the value corresponding to the first temperature signal is lower than 4 ℃ (for example, the actual temperature is 3 ℃), the control unit 140 controls the heating core 130 and the water pump 120 to be turned off at the same time, and controls the alarm unit 170 to alarm.
At the control unit 140, it is determined that: when the value corresponding to the first temperature signal is higher than 48 ℃ (for example, the actual temperature is 49 ℃), the control unit 140 controls the heating core 130 and the water pump 120 to be turned off at the same time, and controls the alarm unit 170 to alarm.
At the control unit 140, it is determined that: when the value corresponding to the second temperature signal is higher than 50 ℃ (for example, the actual temperature is 52 ℃), the control unit 140 controls the heating core 130 and the water pump 120 to be turned off at the same time, and controls the alarm unit 170 to alarm.
At the control unit 140, it is determined that: when the value corresponding to the second temperature signal is lower than 10 ℃ (e.g. the actual temperature is 8 ℃), the control unit 140 controls the heating core 130 and the water pump 120 to be turned off at the same time, and controls the alarm unit 170 to alarm.
At the control unit 140, it is determined that: when the value corresponding to the second temperature signal is lower than 10 ℃, the control unit 140 controls the heating core 130 and the water pump 120 to be turned off simultaneously, and controls the alarm unit 170 to alarm.
At the control unit 140, it is determined that: when the value corresponding to the first temperature signal is lower than 4 ℃ (e.g., the actual temperature is 3 ℃) and the value corresponding to the second temperature signal is lower than 10 ℃ (e.g., the actual temperature is 8 ℃), the control unit 140 controls the heating core 130 and the water pump 120 to be simultaneously turned off and controls the alarm unit 170 to alarm.
At the control unit 140, it is determined that: when the value corresponding to the first temperature signal is lower than 4 ℃ (e.g., the actual temperature is 3 ℃) and the value corresponding to the second temperature signal is lower than 10 ℃ (e.g., the actual temperature is 8 ℃), the control unit 140 controls the heating core 130 and the water pump 120 to be simultaneously turned off and controls the alarm unit 170 to alarm.
At the control unit 140, it is determined that: when the value corresponding to the first temperature signal is higher than 48 ℃ (for example, the actual temperature is 49 ℃) and the value corresponding to the second temperature signal is higher than 50 ℃ (for example, the actual temperature is 52 ℃), the control unit 140 controls the heating core 130 and the water pump 120 to be simultaneously turned off and controls the alarm unit 170 to alarm.
In a state where the heating core 130 is activated:
The control unit 140 determines that: the control unit 140 controls the water pump 120 to be turned off when the difference between the first temperature signal and the second temperature signal is continuously less than 0.5 ℃ within 3 hours, and controls the heating core 130 to be turned off and controls the alarm unit 170 to alarm if the difference between the first temperature signal and the second temperature signal is continuously less than 0.5 ℃ within 15 seconds after the water pump 120 is turned off.
In the state that the water pump is started:
The control unit 140 determines that: when the difference between the first temperature signal and the second temperature signal is greater than 5 ℃, the alarm unit 170 is controlled to alarm.
Preferably, in the liquid heating apparatus 10 provided in embodiment 1 of the present invention, the second temperature sensor 160 is fixedly connected to the housing, and the predetermined distance from the first temperature sensor 150 in the length direction of the housing satisfies the following condition:
1/3 L.ltoreq.m.ltoreq.2/3L; wherein,
M is the predetermined distance;
L is the length of the housing.
Specifically, by setting the distance between the second temperature sensor 160 and the first temperature sensor 150 to be 1/3 to 2/3 of the length of the housing, the problem that the detection accuracy is affected due to excessive heat loss of the liquid due to the too long distance between the two is avoided.
The present embodiment preferably sets the distance between the second temperature sensor 160 and the first temperature sensor 150 to 1/2 of the length of the housing.
Preferably, in the liquid heating apparatus 10 provided in embodiment 1 of the present invention, as shown in fig. 3 to 4, at least one pair of heating cores 130 is disposed in the heating chamber 110, the heating cores 130 are PTC heating cores, and each of the PTC heating cores sequentially includes, from inside to outside, a PTC ceramic sheet, two electrode sheets, a first insulating layer, a protective layer, and a second insulating layer, the PTC ceramic sheet being disposed between the two electrode sheets, the first insulating layer, the protective layer, and the second insulating layer wrapping the PTC ceramic sheet and the two electrode sheets, the protective layer being made of metal.
The present embodiment preferably provides two pairs of heating cores 130, which is advantageous in improving the heating efficiency of the liquid heating apparatus 10.
It should be noted that, the liquid heating apparatus 10 provided in embodiment 1 of the present invention may be applied to a massage SPA pool, an entertainment pool, and other devices, and may be specifically set according to actual requirements.
Based on the liquid heating apparatus 10 disclosed in the above embodiment 1, as shown in fig. 7, embodiment 2 of the present invention provides a massage SPA pool including a water containing chamber 20 and the liquid heating apparatus 10 in embodiment 1.
Specifically, in embodiment 2, the liquid heating apparatus 10 is disposed at one side of the water containing chamber 20, and the liquid inlet 111 and the liquid outlet 112 of the liquid heating apparatus 10 are respectively in fluid communication with the inside of the water containing chamber 20.
More specifically, in embodiment 2, the liquid heating apparatus 10 having the above-described structure has not only higher temperature control accuracy but also an advantage of good safety in use. When the liquid heating device 10 with the structure is adopted in the massage SPA water tank, the massage SPA water tank can be more convenient to use and better in safety. Especially, the method is beneficial to improving the experience of the user.
Preferably, in the massage SPA pool provided in embodiment 2 of the present invention, the liquid heating apparatus 10 has an apparatus housing, and the heating chamber 110, the water pump 120, and the control unit 140 are all disposed in the apparatus housing.
Specifically, the device housing is fixed on an outer wall surface of one side of the water containing chamber 20, and the liquid inlet 111 and the liquid outlet 112 of the liquid heating device 10 extend from one side of the device housing, which is close to the water containing chamber 20, and are in fluid communication with the interior of the water containing chamber 20 through a connecting pipeline.
More specifically, in embodiment 2 of the present invention, by disposing the heating chamber 110, the water pump 120, and the control unit 140 in the device housing, the heating chamber 110, the water pump 120, and the control unit 140 are protected from environmental factors, which may affect the performance of the liquid heating apparatus 10.
More specifically, in embodiment 2 of the present invention, the liquid inlet 111 and the liquid outlet 112 extend from the side of the device housing close to the water containing chamber 20, so that the liquid heating apparatus 10 can be connected to a water tank.
Based on the liquid heating apparatus 10 disclosed in the above-described embodiment 1, embodiment 3 of the present invention provides a temperature control method of the liquid heating apparatus 10, which is applicable to the liquid heating apparatus 10 disclosed in embodiment 1.
Specifically, in embodiment 2, as shown in fig. 8, the temperature control method of the liquid heating apparatus 10 includes:
The control unit 140 obtains first temperature information collected by the first temperature sensor 150 and second temperature information collected by the second temperature sensor 160, wherein the first temperature information comprises a liquid temperature value near the liquid inlet 111 in the heating chamber 110, and the second temperature information comprises a liquid temperature value at a position corresponding to the second temperature sensor 160 in the heating chamber 110;
Judging whether the control unit 140 judges whether the first temperature information and the second temperature information meet a preset first protection condition;
If yes, the heating core 130 is closed, and the alarm unit 170 is controlled to alarm;
otherwise, the control unit 140 determines whether the first temperature information and the second temperature information meet a preset second protection condition;
if yes, the control unit 140 controls the heating core 130 to be turned off; otherwise, the heating core 130 and the water pump 120 are turned on.
In this embodiment, when the control unit 140 determines that the first temperature information and the second temperature information meet the preset first protection condition, the heating core 130 and the water pump 120 may be turned off, and the alarm unit 170 may be controlled to alarm;
When the control unit 140 determines that the first temperature information and the second temperature information satisfy the preset second protection condition, the heating core 130 and the water pump 120 are turned off.
Specifically, the first protection condition includes: the first temperature information is outside the first detection range and/or the second temperature signal is outside the second detection range.
The second protection condition includes: when the difference between the first temperature information and the second temperature information is continuously smaller than the first temperature difference threshold in the first time range while the heating core 130 is in operation, the control unit 140 controls the water pump 120 to be turned off; and, after the water pump 120 is turned off, the difference between the first temperature information and the second temperature information continuously remains smaller than the first temperature difference threshold value in a second time range. Or alternatively
The second protection condition includes: when the water pump 120 is operated, if the difference between the first temperature information and the second temperature information is greater than the second temperature difference threshold, the control unit 140 determines that the first temperature information and the second temperature information satisfy the preset second protection strategy.
Specifically, in use, when the control unit 140 determines that: when the value corresponding to the first temperature information is lower than 4 ℃ (for example, the actual temperature is 3 ℃), the control unit 140 controls the heating core 130 and the water pump 120 to be turned off at the same time, and controls the alarm unit 170 to alarm.
At the control unit 140, it is determined that: when the value corresponding to the first temperature information is higher than 48 ℃ (for example, the actual temperature is 49 ℃), the control unit 140 controls the heating core 130 and the water pump 120 to be turned off at the same time, and controls the alarm unit 170 to alarm.
At the control unit 140, it is determined that: when the value corresponding to the second temperature information is higher than 50 ℃ (for example, the actual temperature is 52 ℃), the control unit 140 controls the heating core 130 and the water pump 120 to be turned off at the same time, and controls the alarm unit 170 to alarm.
At the control unit 140, it is determined that: when the value corresponding to the second temperature information is lower than 10 ℃ (e.g., the actual temperature is 8 ℃), the control unit 140 controls the heating core 130 and the water pump 120 to be turned off at the same time, and controls the alarm unit 170 to alarm.
At the control unit 140, it is determined that: when the value corresponding to the second temperature information is lower than 10 ℃, the control unit 140 controls the heating core 130 and the water pump 120 to be turned off at the same time, and controls the alarm unit 170 to alarm.
At the control unit 140, it is determined that: when the value corresponding to the first temperature information is lower than 4 ℃ (e.g., the actual temperature is 3 ℃) and the value corresponding to the second temperature signal is lower than 10 ℃ (e.g., the actual temperature is 8 ℃), the control unit 140 controls the heating core 130 and the water pump 120 to be simultaneously turned off and controls the alarm unit 170 to alarm.
At the control unit 140, it is determined that: when the value corresponding to the first temperature information is lower than 4 ℃ (e.g., the actual temperature is 3 ℃) and the value corresponding to the second temperature signal is lower than 10 ℃ (e.g., the actual temperature is 8 ℃), the control unit 140 controls the heating core 130 and the water pump 120 to be simultaneously turned off and controls the alarm unit 170 to alarm.
The control unit 140 determines that: when the value corresponding to the first temperature information is higher than 48 ℃ (for example, the actual temperature is 49 ℃) and the value corresponding to the second temperature signal is higher than 50 ℃ (for example, the actual temperature is 52 ℃), the control unit 140 controls the heating core 130 and the water pump 120 to be simultaneously turned off and controls the alarm unit 170 to alarm.
The control unit 140 determines that: when the difference between the first temperature information and the second temperature information is continuously less than 0.5 ℃ within 3 hours, the control unit 140 controls the water pump 120 to be turned off, and after the water pump 120 is turned off, if the difference between the first temperature information and the second temperature information is continuously kept less than 0.5 ℃ within 15 seconds, the control unit 140 controls the heating core 130 to be turned off and controls the alarm unit 170 to alarm.
The control unit 140 determines that: when the difference between the first temperature information and the second temperature information is greater than 5 ℃, the alarm unit 170 is controlled to alarm.
The liquid heating apparatus 10 of the present invention is applicable to a massage SPA pool, wherein the liquid heating apparatus 10 includes a hollow heating chamber 110, a water pump 120 in fluid communication with the heating chamber 110, and a heating core 130 disposed in the heating chamber 110, the heating chamber 110 having a liquid inlet 111 and a liquid outlet 112 in communication with the inside along one end of the length direction of the housing thereof. The liquid heating apparatus 10 further comprises a control unit 140, a first temperature sensor 150 and a second temperature sensor 160. The liquid temperature in the heating chamber 110 and the liquid temperature at the liquid inlet 111 are acquired by the first temperature sensor 150 and the second temperature sensor 160, respectively. The first temperature sensor 150 may detect the temperature of the liquid before heating, the second temperature sensor 160 may detect the temperature of the liquid after the liquid is heated by the heating core 130 for a period of time, and respectively transmit the detected two temperature information to the control unit 140, where the control unit 140 may accurately control the working states of the heating core 130 and the water pump 120 according to the two temperature information (the first temperature signal and the second temperature signal), so as to ensure that the water temperature in the pool is accurately controlled when the liquid heating apparatus 10 is applied to a massage SPA pool or an entertainment pool.
Moreover, compared with a mechanical temperature controller, the electronic temperature acquisition unit has higher detection sensitivity, long waiting is not needed before resetting, the electronic temperature acquisition unit is more convenient to use, particularly, the probe of the second temperature sensor 160 penetrates through the side wall of the shell to extend into the heating chamber 110, the liquid temperature at the corresponding position in the heating chamber 110 is acquired, when the liquid temperature (such as water temperature) in the heating chamber 110 is too high, the corresponding second temperature signal can be detected and fed back to the control unit 140 in a shorter time, so that the control unit 140 can timely control the heating core 130 and the water pump 120 to stop working, and the user is prevented from being scalded by the too high temperature or other components (such as the heating core 130 and the water pump 120) are prevented from being burnt at high temperature. Not only the temperature control precision is higher, but also the use safety is good.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the invention with reference to specific embodiments, and it is not intended to limit the practice of the invention to those descriptions. Various changes in form and detail may be made therein by those skilled in the art, including a few simple inferences or alternatives, without departing from the spirit and scope of the present invention.
Claims (15)
1. A liquid heating apparatus comprising a hollow heating chamber, a water pump in fluid communication with the heating chamber, and a heating core disposed within the heating chamber, and further comprising a liquid inlet and a liquid outlet in communication with the interior of the heating chamber, respectively; the device is characterized by further comprising a first temperature sensor and a second temperature sensor; wherein,
The first temperature sensor is arranged on the shell of the liquid heating device and is closer to the liquid inlet than the second temperature sensor, and the probe of the first temperature sensor penetrates through the side wall of the shell and stretches into the heating cavity; and
The second temperature sensor is spaced apart from the first temperature sensor on the housing in a length direction of the housing, and a probe of the second temperature sensor is at least partially located within the heating chamber.
2. The liquid heating apparatus as claimed in claim 1, wherein the heating chamber includes a first liquid flow path and a second liquid flow path which extend in a longitudinal direction of the housing and are independent of each other, an outlet of the first liquid flow path is communicated with an inlet of the second liquid flow path, the liquid inlet is provided at an inlet position of the first liquid flow path, and the liquid outlet is provided at an outlet position of the second liquid flow path.
3. The liquid heating apparatus according to claim 2, wherein outer peripheries of the first temperature sensor and the second temperature sensor are each provided with an external thread; and
The first temperature sensor and the second temperature sensor are fixed on corresponding threaded holes on the side wall of the shell through external threads in a threaded manner.
4. A liquid heating apparatus as claimed in claim 3, wherein a seal is provided between the threaded bore of the housing and the peripheral wall of the coupling nut.
5. A liquid heating apparatus as claimed in claim 3, further comprising an alarm unit and a switch assembly; wherein,
The switch component is respectively connected with the heating core body, the water pump and the alarm unit.
6. The liquid heating apparatus according to claim 5, wherein at least a pair of heating cores are provided in the heating chamber, the heating cores are PTC heating cores, and each of the PTC heating cores comprises, in order from inside to outside, a PTC ceramic sheet, two electrode sheets, a first insulating layer, a protective layer, a second insulating layer, the PTC ceramic sheet being provided between the two electrode sheets, the first insulating layer, the protective layer, and the second insulating layer wrapping the PTC ceramic sheet and the two electrode sheets, the protective layer being made of metal.
7. The liquid heating apparatus of claim 5, further comprising a control unit, wherein a signal output of the control unit is electrically connected to the heating core and a signal input of the water pump, respectively; and
The first temperature sensor is used for collecting the temperature of the liquid in the heating cavity near the liquid inlet and generating a first temperature signal; and
The second temperature sensor is used for collecting the liquid temperature at the corresponding position in the heating chamber and generating a second temperature signal; the signal input end of the control unit is respectively in communication connection with the signal output ends of the first temperature sensor and the second temperature sensor so as to acquire the first temperature signal and the second temperature signal; the control unit is configured to control the operating states of the heating core and the water pump according to the first temperature signal and the second temperature signal.
8. The liquid heating apparatus as claimed in claim 7, wherein the control unit controls the heating core and the water pump to be simultaneously turned off and controls the alarm unit to alarm when the first temperature signal exceeds a first detection range and/or the second temperature signal exceeds a second detection range; or alternatively
When the heating core works, if the difference value between the first temperature signal and the second temperature signal is continuously smaller than a first temperature difference threshold value in a first time range, the control unit controls the water pump to be turned off, and after the water pump is turned off, if the difference value between the first temperature signal and the second temperature signal is continuously smaller than the first temperature difference threshold value in a second time range, the control unit controls the heating core to be turned off and controls the alarm unit to alarm; or alternatively
When the water pump works, if the difference value between the first temperature signal and the second temperature signal is larger than a second temperature difference threshold value, the alarm unit is controlled to alarm.
9. A massage SPA pool comprising a water containing chamber, further comprising a liquid heating apparatus as claimed in any one of claims 1 to 8; wherein,
The liquid inlet, the liquid outlet, the water pump and the water containing chamber of the liquid heating device are sequentially communicated to form a fluid loop.
10. The SPA pool of claim 9, wherein the liquid heating apparatus has an apparatus housing, the heating chamber, the water pump, and the control unit being disposed within the apparatus housing; and
The liquid inlet and the liquid outlet of the liquid heating device extend out from one side of the device shell, which is close to the water containing cavity, and are in fluid communication with the inside of the water containing cavity through connecting pipelines.
11. A temperature control method of a liquid heating apparatus, characterized in that the temperature control method is performed by a control unit of the liquid heating apparatus according to any one of claims 1 to 8, comprising:
the control unit acquires first temperature information and second temperature information;
judging whether the first temperature information and the second temperature information meet a preset first protection condition,
If yes, closing the heating core body, and controlling an alarm unit to alarm; otherwise the first set of parameters is selected,
Judging whether the first temperature information and the second temperature information meet a preset second protection condition, if so, closing the heating core body; otherwise the first set of parameters is selected,
And opening the heating core body.
12. A method for controlling the temperature of a liquid heating apparatus as claimed in claim 11, wherein,
When the first temperature information and the second temperature information meet the preset first protection condition, the heating core body and the water pump are closed, and an alarm unit is controlled to alarm;
and when the first temperature information and the second temperature information are judged to meet the preset second protection condition, the heating core body and the water pump are closed.
13. The method of temperature control of a liquid heating apparatus as recited in claim 11, wherein said first protection condition comprises:
The first temperature information exceeds the first detection range and/or the second temperature information exceeds the second detection range.
14. The method of temperature control of a liquid heating apparatus as claimed in claim 11, wherein said second protection condition includes:
when the heating core works, the difference value between the first temperature information and the second temperature information is continuously smaller than a first temperature difference threshold value in a first time range, and after the water pump is turned off, the difference value between the first temperature information and the second temperature information is continuously smaller than the first temperature difference threshold value in a second time range.
15. The method of temperature control of a liquid heating apparatus as claimed in claim 11, wherein said second protection condition includes:
when the water pump works, the difference value between the first temperature information and the second temperature information is larger than a second temperature difference threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211461545.3A CN118089241A (en) | 2022-11-21 | 2022-11-21 | Liquid heating device applied to massage SPA pool and temperature control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211461545.3A CN118089241A (en) | 2022-11-21 | 2022-11-21 | Liquid heating device applied to massage SPA pool and temperature control method thereof |
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| Publication Number | Publication Date |
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| CN118089241A true CN118089241A (en) | 2024-05-28 |
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| CN202211461545.3A Pending CN118089241A (en) | 2022-11-21 | 2022-11-21 | Liquid heating device applied to massage SPA pool and temperature control method thereof |
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| Country | Link |
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| CN (1) | CN118089241A (en) |
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- 2022-11-21 CN CN202211461545.3A patent/CN118089241A/en active Pending
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