CN115325604B

CN115325604B - Hot water system temperature regulating device and control method of hot water system temperature regulating device

Info

Publication number: CN115325604B
Application number: CN202210864090.3A
Authority: CN
Inventors: 王宝龙; 牛恒; 杨赞宇; 贾润喆; 苏智寒; 石文星
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2024-05-28
Anticipated expiration: 2042-07-20
Also published as: CN115325604A

Abstract

The present invention relates to the technical field of heating equipment, and provides a hot water system temperature regulating device and a control method for the hot water system temperature regulating device. The device comprises: a thermoelectric module, a hot water pipe, a heating water pipe, a cooling water pipe and a control unit. Among them, the thermoelectric module comprises a thermoelectric heat pump, a cooling end and a heating end; the water inlet of the heating water pipe is connected to the water outlet of the hot water pipe, and the heating water pipe is provided with a heating end; the water inlet of the cooling water pipe is connected to the water outlet of the hot water pipe, and the cooling water pipe is provided with a cooling end and a water storage tank. Under the control of the control unit, the heat of the water in the cooling end is transferred to the heating end, so that the temperature of the water flowing through the heating end is increased so as to be supplied to the user, thereby solving the problem of cold water remaining in the pipe when the user turns on the water in the early stage. This hot water system temperature regulating device has higher heating efficiency and better energy-saving effect than the traditional electric heating device, and has a smaller demand for power capacity, and is suitable for use in homes and commercial buildings.

Description

Temperature adjusting device of hot water system and control method of temperature adjusting device of hot water system

Technical Field

The invention relates to the technical field of heat supply equipment, in particular to a temperature regulating device of a hot water system and a control method of the temperature regulating device of the hot water system.

Background

At present, the centralized heating type household or commercial hot water system, public shower facilities and other systems are widely applied to production and living, and the hot water system mainly comprises: heat sources and pipe network systems. The hot water output by the heat source is conveyed to the water using end of each user through the multi-stage pipeline in the pipe network system for the user to use.

Because the pipes in the pipe network system are long, users have the characteristic of intermittent water use. When a certain user does not use water, the hot water reserved in the corresponding pipeline dissipates heat to the environment, the hot water is changed into cold water, and the cold water in the pipeline is discharged in the initial stage of next water consumption, so that obvious discomfort and water resource waste are caused for the user. The actual measurement result shows that the time for discharging cold water before using hot water is tens of seconds to several minutes according to the different lengths of pipelines between the tail end of water and the heat source, so that the national water resource waste can reach 7.97X10 ⁴ ten thousand tons/year.

At present, cold water flowing out of a pipeline at the initial stage of water consumption can be heated by using a tail end electric heating device, so that the hot water requirement of a user is ensured. The electric heating device in this solution is very power consuming, resulting in a large demand for electric power capacity, which is difficult to use in homes and most commercial buildings.

Disclosure of Invention

The invention provides a water heating system temperature regulating device and a control method of the water heating system temperature regulating device, which are used for solving the defects that in the prior art, an electric heating device is very power-consuming, so that the electric heating device has larger demand on electric capacity and is difficult to use in families and most commercial buildings, realizing high heating efficiency, good energy-saving effect and smaller demand on electric capacity, and are suitable for being applied to the families and the commercial buildings.

The invention provides a temperature regulating device of a hot water system, which comprises:

The thermoelectric module comprises a thermoelectric heat pump, a cooling end and a heating end, wherein the thermoelectric heat pump can transfer heat in a medium of the cooling end to the heating end;

a first temperature sensor is arranged on the hot water pipe;

The water inlet of the heating water pipe is communicated with the water outlet of the hot water pipe, and the heating end, the second temperature sensor and the water flow sensor are arranged on the heating water pipe;

the water inlet of the cooling water pipe is communicated with the water outlet of the hot water pipe, and the cooling end and the water storage tank are arranged on the cooling water pipe;

the control component is used for adjusting the heating capacity of the thermoelectric heat pump, the water inlet of the heating water pipe, the water inlet of the cooling water pipe and the water outlet of the water storage tank;

the control unit is electrically coupled with the first temperature sensor, the second temperature sensor, the water flow sensor and the control component, and is used for controlling the control component.

According to the temperature regulating device of the water heating system, the water storage tank is internally provided with the water level sensor, and the water level sensor is electrically coupled with the control unit.

According to the invention, the temperature regulating device of the hot water system further comprises: the water outlet of the water storage tank is communicated with the heating water pipe, and the water outlet is provided with a one-way valve for enabling media in the cooling water pipe to flow unidirectionally to the heating water pipe.

According to the temperature regulating device of the hot water system, the water discharging pipe is communicated between the water outlet of the water storage tank and the water inlet of the temperature rising end.

According to the invention, there is provided a water heating system attemperator, the control assembly comprising:

A first electric valve with controllable opening degree arranged on the heating water pipe,

A second electric valve arranged on the cooling water pipe,

A drain electric valve provided on the drain pipe, and

And a drain water pump arranged on the drain pipe.

The invention also provides a control method of the temperature regulating device of any one of the hot water systems, which comprises the following steps:

when a water flow signal is obtained, if the first temperature signal of the first temperature sensor is lower than a first preset temperature, controlling water inlet of a heating water pipe, controlling water inlet of a cooling water pipe and operating a thermoelectric module, and heating the water outlet temperature of the heating water pipe to the first preset temperature;

When a water flow signal is obtained, if the first temperature signal of the first temperature sensor is not lower than a first preset temperature, controlling the water inlet of the heating water pipe, stopping the water inlet of the cooling water pipe and closing the thermoelectric module.

And when the water flow signal is not acquired, stopping water inflow of the cooling water pipe and closing the thermoelectric module.

According to the control method of the temperature regulating device of the water heating system provided by the invention, when a water flow signal is obtained, if a first temperature signal of a first temperature sensor is lower than a first preset temperature, controlling water inlet of a heating water pipe, controlling water inlet of a cooling water pipe and operating a thermoelectric module, heating the water outlet temperature of the heating water pipe to the first preset temperature, wherein the control method comprises the following steps:

when the water flow signal is obtained, if the first temperature signal of the first temperature sensor is lower than the first preset temperature,

If the water level signal output by the water level sensor is lower than a first preset height, a second electric valve on the temperature-reducing water pipe is opened, the drainage electric valve and the drainage water pump are closed, the thermoelectric module is opened, the opening of the first electric valve and the thermoelectric heat pump are adjusted in a combined mode, and the water outlet temperature of the temperature-increasing water pipe is heated to a first preset temperature.

The control method of the temperature regulating device of the hot water system provided by the invention further comprises the following steps:

When the water flow signal is obtained, if the first temperature signal of the first temperature sensor is lower than a first preset temperature, and the water level signal output by the water level sensor is not lower than a first preset height, the thermoelectric module is closed, the second electric valve on the cooling water pipe is closed, the drainage electric valve and the drainage water pump are closed, and the first electric valve is adjusted to a preset opening degree.

According to the control method of the temperature regulating device of the water heating system provided by the invention, when the water flow signal is obtained, if the first temperature signal of the first temperature sensor is not lower than the first preset temperature, the water inlet of the water heating pipe, the water inlet of the water cooling pipe and the closing of the thermoelectric module are controlled, and the control method comprises the following steps:

when the water flow signal is acquired,

If the first temperature signal of the first temperature sensor is not lower than a first preset temperature and is lower than a second preset temperature, closing the thermoelectric module, closing a second electric valve on the cooling water pipe, closing a drainage electric valve and a drainage water pump, and adjusting the first electric valve to a preset opening;

If the first temperature signal of the first temperature sensor is not lower than the second preset temperature and the water level signal output by the water level sensor is higher than the second preset height, closing the thermoelectric module, closing a second electric valve on the cooling water pipe, adjusting the first electric valve to a preset opening degree, opening a drainage electric valve, and opening a drainage water pump;

If the first temperature signal of the first temperature sensor is not lower than the second preset temperature, and the water level signal output by the water level sensor is not higher than the second preset height, closing the thermoelectric module, closing the second electric valve on the cooling water pipe, closing the drainage electric valve, closing the drainage water pump, and adjusting the first electric valve to a preset opening.

According to the control method of the temperature regulating device of the hot water system, when no water flow signal is acquired, the water inlet of the cooling water pipe is stopped, and the thermoelectric module is closed, and the control method comprises the following steps:

When no water flow signal is obtained, the thermoelectric module is closed, the second electric valve on the cooling water pipe is closed, the drainage electric valve and the drainage electric valve are closed, and the first electric valve is adjusted to a preset opening.

According to the temperature regulating device of the hot water system, the thermoelectric module is arranged, so that heat of water in the temperature reducing end can be transferred to the temperature rising end, and the temperature of water flowing through the temperature rising end is increased so as to be supplied to a user. Therefore, the problem that cold water is discharged and reserved in the pipeline at the initial stage of boiled water of a user is solved, hot water is supplied immediately, the comfort of the water for the user is improved, cold water output by the cooling end is stored in the water storage tank, and water resource waste is avoided. Based on the working mode of the thermoelectric module, the temperature regulating device of the hot water system has higher heating energy efficiency than the traditional electric heating device, has good energy saving effect, has smaller demand on electric power capacity and is suitable for being applied to families and commercial buildings.

In the control method of the temperature adjusting device of the hot water system provided by the embodiment of the invention, the temperature adjusting device of the hot water system is applied, so that the temperature adjusting device of the hot water system has the advantages as described above, and the details are not repeated here.

Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the invention.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a temperature regulating device of a hot water system according to the present invention;

FIG. 2 is a schematic diagram of an application structure of a temperature regulating device of a hot water system according to the present invention;

FIG. 3 is a logic control diagram of a control method of a temperature regulator of a hot water system according to the present invention;

reference numerals:

10: a thermoelectric module; 11: a thermoelectric heat pump; 12: a cooling end; 13: a heating end; 14: an electric energy controller;

20: a hot water pipe; 21: a first temperature sensor;

30: a heating water pipe; 31: a second temperature sensor; 32: a water flow sensor; 33: a first electrically operated valve;

40: a control unit;

50: a cooling water pipe; 51: a water storage tank; 52: a water level sensor; 53: a second electrically operated valve;

60: a drain pipe; 61: a drain water pump; 62: a drainage electric valve; 63: a one-way valve;

70: a cold water pipe;

80: a water mixing valve;

tin: a first temperature signal; tout: a second temperature signal;

T1: a first preset temperature; t2: a second preset temperature;

h: a water level; h1: a first preset height; h2: and a second preset height.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.

In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The examples provided by the present invention will now be described with reference to fig. 1 to 3, it being understood that the following are merely illustrative embodiments of the present invention and are not to be construed as limiting the present invention in any way.

Fig. 1 is a schematic structural diagram of a temperature adjusting device of a water heating system according to the present invention, please refer to fig. 1. The hot water system temperature regulating device can be arranged at the water using end of a concentrated heating type household or commercial hot water system, a public shower facility and the like. In the above system, the heat source outputs hot water, and the multi-stage pipes in the pipe network system deliver the hot water to the temperature adjusting devices of the respective users, and the hot water output from the temperature adjusting devices is used for the users.

The water heating system temperature regulating device comprises: the thermoelectric module 10, the hot water pipe 20, the heating water pipe 30 capable of controlling water inflow, the control unit 40, the cooling water pipe 50 capable of controlling water inflow and the control assembly. The hot water pipe 20 may be connected to a pipeline in the pipe network system, and the water outlet of the hot water pipe 20 is respectively connected to the heating water pipe 30 and the cooling water pipe 50, so as to output hot water to the heating water pipe 30 and the cooling water pipe 50. It should be noted that, because the users of the above-mentioned hot water system have the characteristic of intermittent water use, the users can reserve a part of cold water at the corresponding pipe ends after the users use the water once. In the next initial stage of water use, after the cold water is output, the hot water in the hot water system is output. That is, the hot water pipe 20 normally outputs cold water at an initial stage of water use.

The thermoelectric module 10 includes a thermoelectric heat pump 11, a cooling end 12, and a warming end 13, and the warming end 13 is disposed in a warming water pipe 30. The cooling water pipe 50 is provided with a cooling end 12 and a water storage tank 51, that is, the media flowing in the cooling end 12 and the heating end 13 are water flowing out of the hot water pipe 20. Wherein the thermoelectric heat pump 11 is capable of transferring heat in the medium of the cooling end 12 to the heating end 13, thereby raising the temperature of water flowing through the heating end 13 for supply to a user. The cold water flowing out from the cooling end 12 may be stored in the water storage tank 51, and the medium in the water storage tank 51 may be reused or used for cooling or the like, which is not limited in this embodiment. The working mode of the thermoelectric module 10 can avoid wasting water resources on the basis of ensuring the requirements of users and saving energy.

The thermoelectric module 10 operates in a manner that has a higher coefficient of performance than conventional electrical heating, has a good energy-saving effect, and has a smaller demand for power capacity, and is suitable for use in domestic and commercial buildings.

The hot water pipe 20 is provided with a first temperature sensor 21, and the first temperature sensor 21 is electrically coupled to the control unit 40, and is configured to acquire and transmit a first temperature signal tin, where the first temperature signal tin can reflect the real-time temperature of the water in the hot water pipe 20. If the first temperature signal tin of the first temperature sensor 21 is lower than the first preset temperature T1, it indicates that the temperature of the hot water outputted from the hot water pipe 20 is too low to be used by the user. At this time, the control unit 40 may control the thermoelectric module 10 to heat the water in the warming water pipe 30. If the first temperature signal tin of the first temperature sensor 21 is higher than the first preset temperature T1, it indicates that the temperature of the hot water output from the hot water pipe 20 is suitable for the user. The first preset temperature T1 is a minimum comfortable water temperature acceptable to the user, and may be set according to the user's requirement, which is not limited in this embodiment.

The second temperature sensor 31 and the water flow sensor 32 are further provided on the warming water pipe 30, and the second temperature sensor 31 and the water flow sensor 32 are provided downstream of the warming end 13. The above-mentioned second temperature sensor 31 is electrically coupled to the control unit 40 for acquiring and transmitting a second temperature signal tout, which can reflect the real-time temperature of the water output from the temperature rising end 13. The water flow sensor 32 is electrically coupled to the control unit 40 for acquiring and transmitting a water flow signal, which can reflect the real-time water demand of the user.

If the second temperature signal tout of the second temperature sensor 31 is between the first preset temperature T1 and the second preset temperature T2, it indicates that the temperature of the hot water output from the warming water pipe 30 is suitable for the user. If the second temperature signal tout of the second temperature sensor 31 is lower than the first preset temperature T1, the temperature of the hot water output from the warming water pipe 30 is too low to be suitable for the user. If the second temperature signal tout of the second temperature sensor 31 is higher than the second preset temperature T2, it indicates that the temperature of the hot water output from the warming water pipe 30 is too high. When the second temperature signal tout is too low or too high, the thermoelectric module 10 can be adjusted to ensure that the second temperature signal tout is between the first preset temperature T1 and the second preset temperature T2. The second preset temperature T2 may be set according to the needs of the user, which is not limited in this embodiment. It should be noted that, the difference between the second preset temperature T2 and the first preset temperature T1 may be within a preset temperature range, which not only ensures the use requirement of the user, but also prevents frequent adjustment of the device, for example, the preset temperature range may be 2-8 ℃.

The operation of the water flow sensor 32 may be: if the user needs water, the user opens a valve downstream of the water flow sensor 32, the water remaining in the warming water pipe 30 flows through the water flow sensor 32, and the water flow triggers the water flow sensor 32 to send a corresponding signal to the control unit 40. If the user does not need water, the valve downstream of the water flow sensor 32 is in the closed state, and the water flow sensor 32 does not send a signal to the control unit 40.

The control unit is used for adjusting the heating capacity of the thermoelectric heat pump 11, the water inlet of the heating water pipe 30, the water inlet of the cooling water pipe 50, and the water outlet of the water storage tank 51. The control unit 40 may control the above-described control components.

In this embodiment, the control unit 40 can control the heat exchange switch of the thermoelectric module 10 and the water inlet switch of the warming water pipe 30 based on the received signals, so that the temperature of the water flowing out from the warming end 13 meets the use requirement of the user.

According to the temperature regulating device of the hot water system, provided by the embodiment of the invention, the thermoelectric module 10 is arranged, so that the heat of water in the temperature reducing end 12 can be transferred to the temperature rising end 13, and the temperature of the water flowing through the temperature rising end 13 is increased so as to be supplied to a user. Thereby solving the problem of discharging and reserving cold water in the pipeline at the initial stage of boiled water of a user, realizing the instant supply of hot water, improving the comfort of the water for the user, and storing the cold water output by the cooling end 12 in the water storage tank 51 so as to avoid the waste of water resources. Based on the working mode of the thermoelectric module 10, the temperature regulating device of the hot water system has higher heating efficiency than the traditional electric heating device, has good energy saving effect, has smaller requirement on electric power capacity, and is suitable for being applied to families and commercial buildings.

In one embodiment of the present invention, the water storage tank 51 is an open water storage tank, that is, the water in the water storage tank 51 is in communication with the atmosphere. The water storage tank 51 has the characteristic of stable air pressure, the water storage tank 51 can not generate high pressure or negative pressure in the water storage and drainage processes, the water flow speed can be ensured, and the safety is higher.

In an embodiment of the present invention, further, a water level sensor 52 is disposed in the water storage tank 51, and the water level sensor 52 is electrically coupled to the control unit 40. Wherein a water level sensor 52 is provided in the water reservoir 51 for measuring the water level and transmitting the measured water level signal to the controllable unit 40.

It should be noted that the control unit 40 may be provided with a first preset height H1 and a second preset height H2, where the first preset height H1 corresponds to a maximum limit position of the water storage amount, and the second preset height H2 corresponds to a minimum limit position of the water storage amount. The control unit 40 can compare the received water level signal with the first preset height H1 and the second preset height H2, thereby completing the subsequent control.

In addition, the water level signal may be obtained by other structures, for example, an upper water level switch and a lower water level switch are disposed on the side wall of the water storage tank 51, and the water level switches respectively correspond to the first preset height H1 and the second preset height H2, and can obtain and transmit a signal whether the position is overflowed by water, if the position is overflowed by water, the signal 1 is output, and if the position is not overflowed by water, the signal 0 is output. The control unit 40 controls water inlet and outlet of the water storage tank 51 based on the water level signal.

The control assembly further includes: the second electrically operated valve 53 is disposed on the cooling water pipe 50 and can control the opening degree, the second electrically operated valve 53 is electrically coupled with the control unit 40, and the control unit 40 can control the water inlet of the cooling water pipe 50 by controlling the second electrically operated valve 53. Further, the second electrically operated valve 53 may be integrally provided with the first electrically operated valve 33, and a three-way valve is formed between the second electrically operated valve and the hot water pipe 20, which is not limited in this embodiment.

In one embodiment provided by the present invention, the hot water system attemperator further comprises: a drain pipe 60, the drain pipe 60 is communicated with the water outlet of the water storage tank 51 and the heating water pipe 30. The drain pipe 60 is further provided with a check valve 63, the direction of water flow allowed in the check valve 63 is from the water outlet of the water storage tank 51 to the warming water pipe 30, and the check valve 63 has the functions of: the water in the cooling water pipe 50 is caused to flow unidirectionally toward the warming water pipe 30 without allowing the water in the warming water pipe 30 to flow countercurrently toward the cooling water pipe 50. That is, even in a state where the water pressure in the temperature-increasing water pipe 30 is large and the water pressure in the temperature-decreasing water pipe 50 is small, the temperature-increasing water pipe 30 is not affected and operates normally. The structure can recycle water in the water storage tank 51, avoid waste of water resources and not influence normal operation of the heating water pipe 30.

Further, the drain pipe 60 is connected between the water outlet of the water storage tank 51 and the water inlet of the heating end 13, and is used for discharging water in the water storage tank 51 to the heating water pipe 30, so that the water storage tank 51 can be conveniently used by a user after being heated by the heating end 13, and the water storage tank 51 can be prevented from being stored in the water storage tank 51 for a long time.

Of course, the water outlet of the water storage tank 51 may not be provided with the water discharge pipe 60, or the water in the water storage tank 51 may be used for other purposes, for example, for cooling or the like, through the water discharge pipe 60, which is not limited in this embodiment.

The control assembly comprises: the electric energy controller 14 is arranged on the thermoelectric heat pump 11, the thermoelectric heat pump 11 is operated under the drive of the electric energy controller 14, and the heat exchange power of the thermoelectric heat pump 11, that is, the heat exchange capacity of the thermoelectric heat pump 11 can be adjusted by adjusting the current or the voltage. Wherein the cooling end 12 and the heating end 13 may be closely attached to both sides of the thermoelectric heat pump 11, so that heat exchange efficiency may be ensured. Moreover, the flow direction of water in the cooling end 12 can be opposite to the flow direction of water in the heating end 13, that is, the flow direction of water is opposite at two sides of the thermoelectric heat pump 11, so that the heat exchange efficiency can be improved.

In the above embodiment, the control assembly includes: the first electrically operated valve 33 is disposed at the water inlet of the warming water pipe 30, the opening degree of the first electrically operated valve 33 is controllable, and the first electrically operated valve 33 is electrically coupled with the control unit 40. The control unit 40 may control the switch of the first electrically operated valve 33 according to the water requirement, and adjust the opening of the first electrically operated valve 33 according to the second temperature signal tout, so that the second temperature signal tout is between the first preset temperature T1 and the second preset temperature T2 to meet the user requirement. It should be noted that the opening of the first electrically operated valve 33 cannot be adjusted to be too small to ensure the minimum water consumption of the user.

In an embodiment of the present invention, the control assembly further includes: a drain water pump 61 provided on the drain pipe 60 for driving the water in the water storage tank 51 to be discharged so that the cold water is circulated for use, thereby saving water resources. The drain pump 61 may be of a frequency modulation type or a constant speed type, and this embodiment is not limited thereto. Of course, the water outlet of the water storage tank 51 may not be provided with the drain pump 61, and the water may be drained by gravity of the water itself, which is not limited in this embodiment.

The control assembly further comprises: a drain electrically operated valve 62 provided on the drain pipe 60, the opening degree of the drain electrically operated valve 62 being controllable, and the drain electrically operated valve 62 being electrically coupled with the control unit 40. When the hot water pipe 20 is not supplied with cold water, but can be supplied with hot water, the control unit 40 opens the drain electric valve 62 to return the cold water in the water storage tank 51 to the warming water pipe 30, and mixes the cold water with the hot water to supply the user. Meanwhile, according to the second temperature signal tout, the opening of the drain electric valve 62 is adjusted in real time, the mixing proportion of cold water is controlled, and the second temperature signal tout is ensured to be between the first preset temperature T1 and the second preset temperature T2 so as to meet the needs of users.

The temperature regulating device of the hot water system can be directly used by a user and can also be matched with the original cold water pipe 70 of the user. Fig. 2 is a schematic diagram of an application structure of a temperature adjusting device of a hot water system according to the present invention, please refer to fig. 2. The cold water pipe 70 can be a tap water pipe, the heating water pipe 30 is communicated with the water outlet of the cold water pipe 70 through a water outlet pipe, and the water outlet pipe is provided with a water mixing valve 80. Through the mixing of the water mixing valve 80, the hot water output by the heating water pipe 30 and the cold water output by the cold water pipe 70 can be mixed and used by a user, so that the use habit of the user is met, and the requirements of different users on different water temperatures are met.

According to the temperature regulating device of the hot water system, provided by the embodiment of the invention, the thermoelectric module 10 is arranged, so that the heat of water in the temperature reducing end 12 can be transferred to the temperature rising end 13, and the temperature of the water flowing through the temperature rising end 13 is increased so as to be supplied to a user. Thereby solving the problem of discharging and reserving cold water in the pipeline at the initial stage of boiled water of a user, realizing the instant supply of hot water, improving the comfort of the water for the user, and storing the cold water output by the cooling end 12 in the water storage tank 51 so as to avoid the waste of water resources. Based on the working mode of the thermoelectric module 10, the temperature regulating device of the hot water system has higher heating efficiency than the traditional electric heating device, has good energy saving effect, has smaller requirement on electric power capacity, and is suitable for being applied to families and commercial buildings. Moreover, the device can be additionally arranged at the tail end of water, and has simple structure, convenient installation and low cost.

The invention also provides a control method of the temperature regulating device of the hot water system, fig. 3 is a logic control diagram of the control method of the temperature regulating device of the hot water system, please refer to fig. 3, the control method can be applied to any one of the temperature regulating devices of the hot water system, the method comprises:

301. when the water flow signal is obtained, if the first temperature signal tin of the first temperature sensor 21 is lower than the first preset temperature T1, the water inlet of the heating water pipe 30 is controlled, the water inlet of the cooling water pipe 50 is controlled, and the thermoelectric module 10 is operated, so that the water outlet temperature of the heating water pipe 30 is heated to the first preset temperature T1.

Wherein the water flow signal is acquired by the water flow sensor 32 and transmitted to the control unit 40. The water flow signal indicates that water is flowing through the warming water pipe 30, i.e., that the user has a water demand. Specifically, if the user needs water, the user opens a valve downstream of the water flow sensor 32, the water remaining in the warming water pipe 30 flows through the water flow sensor 32, and the water flow triggers the water flow sensor 32 to send a corresponding signal to the control unit 40. The valve may be a general valve, and the corresponding user may use the water outputted from the warming water pipe 30. The valve may be a water mixing valve 80, and the water mixing valve 80 is also connected to a tap water pipe, so that a corresponding user can mix the water output from the temperature raising water pipe 30 with the water output from the tap water pipe for use.

In this step, if the first temperature signal tin of the first temperature sensor 21 is lower than the first preset temperature T1, it indicates that the temperature of the hot water outputted from the hot water pipe 20 is too low to be suitable for the user. At this time, the control unit 40 may control the thermoelectric module 10 to heat the water in the warming water pipe 30.

The inflow water of the hot water pipe 20 is split into a cooling water pipe 50 and a heating water pipe 30, and exchanges heat with the low temperature side and the high temperature side of the thermoelectric module 10 in the cooling end 12 and the heating end 13 respectively, cold water flowing out of the cooling end 12 enters the water storage tank 51, and hot water flowing out of the heating end 13 is supplied to the tail end of water. In this stage, by adjusting the electric power controller 14 and the first electrically operated valve 33, it is ensured that the second temperature signal tout detected by the second temperature sensor 31 is as stable as possible between the first preset temperature T1 and the second preset temperature T2. Wherein the opening of the first electrically operated valve 33 cannot be too small in order to be able to ensure a minimum hot water usage.

If the second temperature signal tout detected by the second temperature sensor 31 is higher than the second preset temperature T2 after the first electrically operated valve 33 is opened to the maximum, the electric power controller 14 is turned down to ensure that the water temperature at the second temperature sensor 31 is as stable as possible between the first preset temperature T1 and the second preset temperature T2.

It should be noted that during this operation, the current of the electric power controller 14 may be adjusted to 0, so that the adjustment process of the electric power controller 14 may be ensured to be substantially continuous.

In this operation, the water flow path includes: a hot water pipe 20, a heating water pipe 30 and a cooling water pipe 50.

Step 301 includes a number of possible embodiments:

3011. When the water flow signal is obtained, if the first temperature signal tin of the first temperature sensor 21 is lower than the first preset temperature T1, and the water level H signal output by the water level sensor 52 is lower than the first preset height H1, that is, the water level of the water storage tank 51 is not full. The second electric valve 53 on the cooling water pipe 50 is opened, the drainage electric valve 62 and the drainage water pump 61 are closed, and water is stored in the water storage tank 51, and the step is used for providing a medium for cooling for the cooling end 12 of the thermoelectric module 10. By turning on the thermoelectric module 10, the opening of the first electrically operated valve 33 and the thermoelectric heat pump 11 are adjusted in combination, and the outlet water temperature of the warming water pipe 30 is heated to the first preset temperature T1.

According to the control method of the temperature adjusting device of the hot water system provided by the invention, the step 301 further comprises the following embodiments:

3012. When the water flow signal is obtained, if the first temperature signal tin of the first temperature sensor 21 is lower than the first preset temperature T1 and the water level H signal output by the water level sensor 52 is not lower than the first preset height H1, that is, exceeds the maximum limit position of the water storage tank 51 capable of storing water, the water inlet needs to be stopped by the following operation. Closing the thermoelectric module 10, closing the second electric valve 53 on the cooling water pipe 50, closing the drainage electric valve 62 and the drainage water pump 61, adjusting the first electric valve 33 to a preset opening degree, and discharging cold water until the water temperature in the hot water pipe 20 reaches the use requirement.

302. When the water flow signal is obtained, if the first temperature signal tin of the first temperature sensor 21 is not lower than the first preset temperature T1, the temperature of the hot water output from the hot water pipe 20 is suitable for the user, and at this time, the water inlet of the heating water pipe 30 can be controlled, the water inlet of the cooling water pipe 50 can be stopped, and the thermoelectric module 10 can be turned off, so that the waste of electric energy is avoided. At this time, the hot water in the hot water pipe 20 is normally used by the user, and the warming water pipe 30 is used only for the overcurrent.

This step 302 includes a number of possible embodiments:

3021. When the water flow signal is obtained, if the first temperature signal tin of the first temperature sensor 21 is not lower than the first preset temperature T1 and is lower than the second preset temperature T2, it indicates that the water temperature output by the hot water pipe 20 is suitable for the user. The thermoelectric module 10 can be closed, the second electrically operated valve 53 on the cooling water pipe 50 can be closed, the drain electrically operated valve 62 and the drain water pump 61 can be closed, and the first electrically operated valve 33 can be adjusted to a preset opening.

3022. When the water flow signal is obtained, if the first temperature signal tin of the first temperature sensor 21 is not lower than the second preset temperature T2, it indicates that the water temperature output by the hot water pipe 20 is suitable for the user. And the water level H signal outputted from the water level sensor 52 is higher than the second preset height H2, at which time it is necessary to stop heating and drain water. The thermoelectric module 10 is closed, the second electric valve 53 on the cooling water pipe 50 is closed, the first electric valve 33 is adjusted to a preset opening degree, the drainage electric valve 62 is opened, and the drainage water pump 61 is opened. In the above operation, the water flow path includes: a hot water pipe 20, a warming water pipe 30 and a drain pipe 60.

3023. If the first temperature signal tin of the first temperature sensor 21 is not lower than the second preset temperature T2, the water temperature output by the hot water pipe 20 is suitable for the user. And the water level H signal output from the water level sensor 52 is not higher than the second preset height H2, indicating that the water level of the water storage tank 51 is lower than the minimum limit position of the water storage amount, heating and drainage may be stopped. That is, the thermoelectric module 10 is turned off, the second electrically operated valve 53 on the cooling water pipe 50 is turned off, the drain electrically operated valve 62 is turned off, the drain water pump 61 is turned off, and the first electrically operated valve 33 is adjusted to a predetermined opening.

In the above operation, the water flow path includes: a hot water pipe 20 and a warming water pipe 30.

303. When the water flow signal is not acquired, the water supply to the cooling water pipe 50 is stopped and the thermoelectric module 10 is turned off.

Wherein, the water flow signal is not obtained, which indicates that the user has stopped using water. The method specifically comprises the following steps: when the water flow signal is not obtained, the thermoelectric module 10 is turned off, the second electric valve 53 on the cooling water pipe 50 is turned off, the water discharge electric valve 62 and the water discharge electric valve 62 are turned off, and the first electric valve 33 is adjusted to a preset opening.

The control method of the temperature regulating device of the hot water system solves the problem of cold water reserved in the pipeline at the initial stage of boiled water of a user, realizes the instant supply of hot water, improves the comfort of water for the user and avoids the waste of water resources. Based on the working mode of the thermoelectric module 10, the temperature regulating device of the hot water system has higher heating efficiency than the traditional electric heating device, has good energy saving effect, has smaller requirement on electric power capacity, and is suitable for being applied to families and commercial buildings. Moreover, the device can be additionally arranged at the tail end of water, and has simple structure, convenient installation and low cost.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water heating system attemperator, comprising:

a first temperature sensor is arranged on the hot water pipe;

The control unit is used for controlling the control assembly, a water level sensor is arranged in the water storage tank, and the water level sensor is electrically coupled with the control unit;

The water outlet of the water storage tank is communicated with the heating water pipe, a one-way valve is arranged on the water outlet pipe and used for enabling media in the cooling water pipe to flow unidirectionally to the heating water pipe, and the water outlet pipe is communicated between the water outlet of the water storage tank and the water inlet of the heating end;

The control assembly comprises a first electric valve arranged on the heating water pipe and capable of controlling the opening degree, a second electric valve arranged on the cooling water pipe, a drainage electric valve arranged on the drainage pipe and a drainage water pump arranged on the drainage pipe.

2. A method of controlling a thermostat of a water heating system as set forth in claim 1, comprising:

When a water flow signal is obtained, if the first temperature signal of the first temperature sensor is not lower than a first preset temperature, controlling the water inlet of the heating water pipe, stopping the water inlet of the cooling water pipe and closing the thermoelectric module;

3. The method for controlling a temperature regulator of a water heating system according to claim 2, wherein when the water flow signal is obtained, if the first temperature signal of the first temperature sensor is lower than a first preset temperature, controlling the water inlet of the water heating pipe, controlling the water inlet of the water cooling pipe, and operating the thermoelectric module, the heating the water outlet temperature of the water heating pipe to the first preset temperature comprises:

4. A control method of a water heating system thermostat according to claim 2 or 3, further comprising:

5. The method according to claim 2, wherein when the water flow signal is obtained, if the first temperature signal of the first temperature sensor is not lower than a first preset temperature, controlling the water inlet of the warming water pipe, stopping the water inlet of the cooling water pipe, and closing the thermoelectric module, comprises:

when the water flow signal is acquired,

6. A control method of a water heating system thermostat according to claim 3, wherein stopping the water supply to the cooling water pipe and closing the thermoelectric module when the water flow signal is not acquired, comprises: