CN217817009U - Domestic hot water supply system - Google Patents
Domestic hot water supply system Download PDFInfo
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- CN217817009U CN217817009U CN202221470728.7U CN202221470728U CN217817009U CN 217817009 U CN217817009 U CN 217817009U CN 202221470728 U CN202221470728 U CN 202221470728U CN 217817009 U CN217817009 U CN 217817009U
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Abstract
The utility model provides a domestic hot water supply system, include: the system comprises a water heater, a constant-temperature water tank, a preheating water tank, a primary circulating pump and a secondary circulating pump, wherein the system forms a primary circulating loop and a secondary circulating loop, the secondary circulating loop is in continuous water circulation, and the system is further provided with a first water temperature sensor and a second water temperature sensor which are used for controlling the primary circulating loop. The utility model has the advantages of hot water preparation is timely, the replenishment is quick, can guarantee the hot water temperature demand of end user under the circumstances such as winter, multi-user use simultaneously to hydrothermal ultra-temperature protect function in the pipeline has been realized, better security and redundancy have.
Description
Technical Field
The utility model relates to a water supply equipment field especially relates to a life hot water supply system.
Background
For some hot water supply systems equipped in buildings such as dormitory buildings, apartments, hotels, etc., there has been a long-standing problem: the hot water supply capacity in summer is basically suitable, and the hot water supply capacity in winter is seriously insufficient.
Through the analysis of the structural principle of the equipment and the field operation condition, the main reason is that when the closed loop of the pipeline of the hot water supply system is large, the pipeline is long, and no one takes hot water for a long time, the hot water in the pipeline is still, and the water temperature is reduced quickly. When the end user takes water, the temperature of the hot water retained in the pipeline has been reduced to a certain degree, and the water taken is the cold water retained in the pipeline. In addition, although the device is already heating in circulation some time after the user has taken water, the water temperature in the pipeline cannot be raised in a short time due to the pipeline being too long and the heating time being too late. The heating lag causes the hot water supply failure, which is especially prominent when multiple users use the hot water simultaneously, so that the working condition requirement can not meet the normal use or even can not be used at all in cold winter although the use requirement can be barely met in summer.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a life hot water supply system, its hot water preparation is timely, the replenishment is quick, has guaranteed the terminal user hot water temperature demand under the condition such as winter, multi-user use simultaneously to hydrothermal ultra-temperature protect function has realized in the pipeline, has better security and redundancy.
In order to achieve the above object, the utility model discloses a following technical scheme realizes:
a domestic hot water supply system comprising:
the water heater is a container which is provided with a heating device and is used for preparing hot water, and is provided with a water inlet and a water outlet;
the constant-temperature water tank is a container for storing hot water prepared by the water heater and is provided with a hot water inlet, a hot water outlet and an exchange port; wherein the hot water inlet is connected with the water outlet;
the preheating water tank is a container for accommodating and preheating supplemented cold water and is provided with a cold water replenishing port, a primary circulation water outlet, a secondary circulation water inlet and a preheating exchange port; wherein the cold water replenishing port is connected with a cold water source; the pre-heat exchange port is connected with the exchange port; the primary circulation water outlet is connected with the water inlet, and the water heater, the constant-temperature water tank, the preheating water tank and the water heater form a primary circulation loop; the secondary circulation water inlet is connected with the hot water outlet through a hot water output main pipe, the hot water output main pipe is connected with a floor hot water branch pipeline connected with a terminal user, and the constant temperature water tank, the preheating water tank and the constant temperature water tank form a secondary circulation loop;
the primary circulating pump is arranged on the primary circulating loop, so that the primary circulating loop can circulate water in the directions of the water heater, the constant-temperature water tank, the preheating water tank and the water heater;
and the secondary circulating pump is arranged on the secondary circulating loop, so that the secondary circulating loop can circulate water according to the directions of the hot water outlet of the constant-temperature water tank, the preheating water tank, the exchange port of the constant-temperature water tank and the hot water outlet of the constant-temperature water tank.
Preferably, the secondary circulation pump is operated uninterruptedly, and the secondary circulation loop is circulated uninterruptedly with water.
Preferably, the domestic hot water supply system is further provided with a first water temperature sensor which detects the water temperature of the installation position in real time; the first water temperature sensor is electrically connected with the primary circulating pump and can be used for setting a low-temperature trigger value, and when the detected water temperature is lower than the low-temperature trigger value, the first water temperature sensor controls the primary circulating pump to operate.
Preferably, the first water temperature sensor is provided on the hot water output manifold.
Preferably, the first water temperature sensor is arranged behind a connection point of the hot water output main pipe and each floor hot water branch pipe and is close to the secondary circulation water inlet.
Preferably, the domestic hot water supply system is further provided with a second water temperature sensor which detects the water temperature of the installation position in real time; the second water temperature sensor is electrically connected with the primary circulating pump and can be used for setting a high-temperature trigger value, and when the detected water temperature is higher than the high-temperature trigger value, the second water temperature sensor controls the primary circulating pump to stop running.
Preferably, the second water temperature sensor is disposed inside the tank body of the constant temperature water tank at a middle position in a vertical direction.
Preferably, the exchange port of the constant temperature water tank is arranged on the side wall of the constant temperature water tank and comprises a first exchange port and a second exchange port which are distributed up and down in sequence; the preheating exchange port of the preheating water tank is arranged on the side wall of the preheating water tank and comprises a first preheating exchange port and a second preheating exchange port which are distributed up and down in sequence, the first exchange port is connected with the first preheating exchange port, and the second exchange port is connected with the second preheating exchange port.
Preferably, a cold water supplementing electromagnetic valve is arranged between the cold water supplementing opening and the cold water source, the cold water supplementing electromagnetic valve automatically opens the valve when the water pressure of the secondary circulation loop is reduced, and the valve is automatically closed after cold water is filled.
Preferably, the water heater is provided with a temperature control device, the water outlet is formed in the upper end of the side wall of the water heater, and the water inlet is formed in the lower end of the side wall of the water heater or in the bottom of a box body of the water heater.
To sum up, compare with prior art, the utility model provides a domestic hot water supply system has following beneficial effect:
1. by arranging the uninterrupted secondary circulating pump, hot water in the secondary circulating loop can flow in an uninterrupted circulating manner, so that the problem that the temperature of the hot water in the secondary circulating loop is reduced due to long-term rest is avoided, and the temperature of the hot water of a terminal user is ensured;
2. the first water temperature sensor is arranged at the circulation tail end of the secondary circulation loop, so that the temperature control point of the primary circulation loop can quickly react, hot water is prepared in time, and the hot water temperature requirement of an end user in winter and when multiple users use the system at the same time is met;
3. by adopting the redundant safety measures of heating temperature control of the water heater and temperature control of the second water temperature sensor to stop the primary circulating pump, the ultra-high temperature protection function of hot water in the pipeline is realized, the hot water is ensured to be kept in a safe water temperature range, and the safety and the redundancy are better.
Drawings
Fig. 1 is a schematic structural diagram of a domestic hot water supply system of the present invention.
Detailed Description
The present invention provides a domestic hot water supply system, which is described in detail below with reference to the accompanying drawings and the detailed description. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are simplified and employ non-precise proportions, and are only used for facilitating and clearly assisting the description of the embodiments of the present invention, and are not used for limiting the limitation conditions of the embodiments of the present invention, so that they do not have technical essential meanings, and any structure modification, proportion relationship change or size adjustment should still fall within the scope that the technical contents of the present invention can cover without affecting the functions and the achievable purposes of the present invention.
It is to be noted that, in the present invention, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, the present embodiment provides a domestic hot water supply system, which is suitable for domestic hot water supply of small-scale user groups such as dormitories, apartments, hotels, etc., and comprises:
the water heater 1 is a container for preparing hot water by using a heating device, the heating device is provided with a temperature control device capable of detecting the temperature of the water in the water heater 1, the temperature control device is provided with a preset heating value, when the prepared hot water is higher than the preset heating value, the heating device stops heating, so that constant-temperature hot water can be output, the prepared hot water is controlled in a safe water temperature, and an end user is prevented from being scalded; the heater 1 is provided with 1 water inlet and 1 delivery port, because the density of cold water is greater than hot water, and hot water distributes in the upper strata of cold water, in order to guarantee delivery port leaving water temperature and heating efficiency, so with the delivery port design in the lateral wall upper end of water heater 1, the water inlet design is in the lateral wall lower extreme or the bottom half of water heater 1. In the embodiment, the heating device is an electric heating device, and other heating devices may be used.
Constant temperature water tank 2 for the hot water of 1 preparation of storage water heater is provided with 1 hot water import, 1 hot water export and 2 exchange ports: a first switch port and a second switch port; wherein, the hot water inlet is connected with the water outlet of the water heater 1 through a pipeline; the first exchange port and the second exchange port are arranged on the side wall of the constant temperature water tank 2 and distributed up and down.
Preheating water tank 3 for hold supplementary cold water and preheat supplementary cold water, be provided with 1 cold water moisturizing mouth, 1 once circulate delivery port, 1 secondary circulation water inlet and 2 and preheat the exchange port: a first pre-heat exchange port and a second pre-heat exchange port; the cold water supplementing port is connected to a cold water source (such as a municipal water supply network) through a pipeline and a cold water supplementing electromagnetic valve 6, the cold water supplementing electromagnetic valve 6 is in a closed state in a normal state, when the water pressure of the pipeline close to one side of the preheating water tank 3 is reduced due to the fact that a user uses hot water, the cold water supplementing electromagnetic valve 6 is automatically opened, the cold water source injects cold water into the preheating water tank 3, and the cold water source is automatically closed when the preheating water tank 3 is full of the cold water; the first pre-heat exchange port and the second pre-heat exchange port are arranged on the side wall of the box body of the pre-heating water tank 3 and are distributed up and down, the first pre-heat exchange port is communicated with the first exchange port through a first exchange pipe, and the second pre-heat exchange port is communicated with the second exchange port through a second exchange pipe and is used as a water circulation channel between the pre-heating water tank 3 and the constant-temperature water tank 2, so that the purpose of pre-heating cold water supplemented in the pre-heating water tank 3 by using hot water in the constant-temperature water tank 2 is achieved; the primary circulation water outlet is arranged at the bottom of the preheating water tank 3 and is used for conveying cold water at the bottom of the tank body to the water heater 1 through the primary circulation water outlet for heating.
Secondary circulation pump 5, for electric water pump, both ends are passed through hot water output house steward 8 and are connected with the hot water delivery port of constant temperature water tank 2 and the secondary circulation water inlet of preheating tank 3 respectively, constitute the secondary circulation return circuit with constant temperature water tank 2 and preheating tank 3, and the hydrologic cycle direction is: the constant-temperature water tank 2 → the secondary circulating water pump 5 → the preheating water tank 3 → the constant-temperature water tank 2; the hot water output header pipe 8 is connected with the hot water branch pipelines 9 of all the floors, and the hot water branch pipelines 9 of all the floors are respectively connected with the terminal users of all the floors; the secondary circulating pump 5 is set to run uninterruptedly, so that hot water in a secondary circulating loop keeps flowing, and the temperature of the hot water in a pipeline is prevented from being reduced due to long-term standing; in order to save energy, 1 secondary circulation pipeline throttle valve 7 can be arranged on a hot water output main pipe 8 between the secondary circulation water pump 5 and the preheating water tank 3, and the opening degree of the valve can be adjusted according to working conditions, so that hot water in a secondary circulation loop circularly flows at a reasonable flow rate.
The primary circulation pump 4, for electric water pump, both ends are passed through the pipeline and are connected with the water inlet of water heater 1 and the primary circulation delivery port of preheating water tank 3 respectively, constitute a circulation loop with water heater 1, constant temperature water tank 2 and preheating water tank 3, and the hydrologic cycle direction is: preheating water tank 3 → primary circulating pump 4 → water heater 1 → constant temperature water tank 2 → preheating water tank 3; the primary circulating pump 4 is started and stopped by a first water temperature sensor A and a second water temperature sensor B, wherein the first water temperature sensor A is used for controlling the primary circulating pump 4 to be started, is arranged on a hot water output main pipe 8 and is positioned behind a connecting point of the hot water output main pipe 8 and each floor hot water branch pipe (according to the water circulation direction of a secondary circulation loop), is close to a secondary circulation water inlet of the preheating water tank 3, can detect the water temperature in the pipeline at an installation position, and can set a low-temperature trigger value; the second water temperature sensor B is used for controlling the primary circulating pump 4 to stop, is arranged in the box body of the constant-temperature water tank 2 and is positioned in the middle of the box body in the vertical direction, can detect the water temperature of the installation position in the constant-temperature water tank 2 and can set a high-temperature trigger value, when the detected water temperature is higher than the high-temperature trigger value, the second water temperature sensor B controls the primary circulating pump 4 to stop, so that when the temperature control device of the water heater 1 breaks down, the prepared hot water exceeds the safe water temperature, the system still heats continuously and is conveyed to a terminal user through the primary circulating loop and the secondary circulating loop, and scalding or other dangerous situations of the user occur; the high temperature trigger value is set to 60 deg.c in this embodiment.
The working process of the domestic hot water supply system provided by the embodiment is as follows:
1. the secondary circulation pump 5 runs uninterruptedly, so that water in the secondary circulation loop flows circularly all the time according to the set flow of the secondary circulation pipeline throttle valve 7, and the water circulation path is as follows: the constant-temperature water tank 2 → the secondary circulating water pump 5 → the preheating water tank 3 → the constant-temperature water tank 2;
2. when a terminal user uses hot water, the hot water in the secondary circulation loop flows out to the corresponding floor hot water branch pipeline 9 through the hot water output header pipe 8, the cold water supplementing electromagnetic valve 6 detects that the water pressure is reduced and automatically opens, and cold water is injected into the preheating water tank 3 from a cold water source; the low-temperature water in the preheating water tank 3 and the hot water in the constant-temperature water tank 2 are circularly exchanged through a first exchange pipe and a second exchange pipe, the supplemented cold water is preheated through the heat exchange of cold water and hot water, and the cold water supplementing electromagnetic valve 6 is automatically closed after the cold water is supplemented;
3. when the first water temperature sensor A detects that the water temperature at the installation position of the first water temperature sensor A is lower than a low-temperature trigger value, the first water temperature sensor A controls to start the primary circulating pump 4, and relatively cold water at the bottom of the preheating water tank 3 is conveyed into the water heater 1 to be heated; under the driving of a primary circulating pump 4, hot water on the upper layer in the water heater 1 is fed into a constant-temperature water tank 2 from a water outlet, then enters a preheating water tank 3 through a first exchange pipe and a second exchange pipe of the constant-temperature water tank 2, is conveyed into the hot water tank 1 by the primary circulating pump 4 to be continuously heated … … for circulation repeatedly, and the primary circulating pump 4 is controlled to stop running by the secondary water temperature sensor B until the secondary water temperature sensor B detects that the water temperature at the installation position of the secondary water temperature sensor B is higher than a high-temperature trigger value;
4. the heater 1 controls the temperature and heats according to a preset heating value, automatically stops heating when the preset heating value is reached, and is matched with the second water temperature sensor B to form a double-safety setting to ensure that the temperature of hot water in the secondary circulation loop does not exceed the safe temperature.
To sum up, the domestic hot water supply system provided by the utility model enables the hot water in the secondary circulation loop to continuously circulate and flow by arranging the secondary circulation pump which runs uninterruptedly, thereby avoiding the reduction of the temperature of the hot water in the secondary circulation loop due to long-term rest and ensuring the temperature of the hot water of the terminal user; the first water temperature sensor is arranged at the circulation tail end of the secondary circulation loop, so that the temperature control point of the primary circulation loop can quickly react, hot water is prepared in time, and the hot water temperature requirement of an end user in winter and when multiple users use the system at the same time is met; by adopting the redundant safety measures of heating temperature control of the water heater and temperature control of the second water temperature sensor to stop the primary circulating pump, the ultra-high temperature protection function of hot water in the pipeline is realized, the hot water is ensured to be kept in a safe water temperature range, and the safety and the redundancy are better.
While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the present invention. Numerous modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (10)
1. A domestic hot water supply system, comprising:
the water heater is a container provided with a heating device and used for preparing hot water, and is provided with a water inlet and a water outlet;
the constant-temperature water tank is a container for storing hot water prepared by the water heater and is provided with a hot water inlet, a hot water outlet and an exchange port; wherein the hot water inlet is connected with the water outlet;
the preheating water tank is a container for accommodating and preheating supplemented cold water and is provided with a cold water replenishing port, a primary circulation water outlet, a secondary circulation water inlet and a preheating exchange port; wherein the cold water replenishing port is connected with a cold water source; the pre-heat exchange port is connected with the exchange port; the primary circulation water outlet is connected with the water inlet, and the water heater, the constant-temperature water tank, the preheating water tank and the water heater form a primary circulation loop; the secondary circulation water inlet is connected with the hot water outlet through a hot water output main pipe, the hot water output main pipe is connected with a floor hot water branch pipeline connected with a terminal user, and the constant temperature water tank, the preheating water tank and the constant temperature water tank form a secondary circulation loop;
the primary circulating pump is arranged on the primary circulating loop, so that the primary circulating loop can circulate water in the directions of the water heater, the constant-temperature water tank, the preheating water tank and the water heater;
and the secondary circulating pump is arranged on the secondary circulating loop, so that the secondary circulating loop can circulate water according to the directions of the hot water outlet of the constant-temperature water tank, the preheating water tank, the exchange port of the constant-temperature water tank and the hot water outlet of the constant-temperature water tank.
2. The domestic hot water supply system of claim 1, wherein said secondary circulation pump is operated without interruption, causing said secondary circulation loop to circulate water without interruption.
3. The domestic hot water supply system of claim 2, further provided with a first water temperature sensor which detects a water temperature of the installation position in real time; the first water temperature sensor is electrically connected with the primary circulating pump and can be used for setting a low-temperature trigger value, and when the detected water temperature is lower than the low-temperature trigger value, the first water temperature sensor controls the primary circulating pump to operate.
4. The domestic hot water supply system of claim 3, wherein said first water temperature sensor is disposed on said hot water output manifold.
5. The domestic hot water supply system of claim 4, wherein said first water temperature sensor is disposed after the connection point of said hot water output main to each of said floor hot water branch pipes and adjacent to said secondary circulation water inlet.
6. The domestic hot water supply system according to claim 3, wherein a second water temperature sensor is further provided which detects the water temperature of the installation position in real time; the second water temperature sensor is electrically connected with the primary circulating pump and can be used for setting a high-temperature trigger value, and when the detected water temperature is higher than the high-temperature trigger value, the second water temperature sensor controls the primary circulating pump to stop running.
7. The domestic hot water supply system of claim 6, wherein said second water temperature sensor is provided inside a tank body of said constant-temperature water tank at a middle position in a vertical direction.
8. The domestic hot water supply system according to claim 2, wherein said exchange port of said thermostatic water tank is provided on a side wall of said thermostatic water tank, and comprises a first exchange port and a second exchange port which are distributed in an up-down order; the preheating exchange port of the preheating water tank is arranged on the side wall of the preheating water tank and comprises a first preheating exchange port and a second preheating exchange port which are distributed up and down in sequence, the first exchange port is connected with the first preheating exchange port, and the second exchange port is connected with the second preheating exchange port.
9. The domestic hot water supply system of claim 2, wherein a cold water replenishing solenoid valve is provided between the cold water replenishing port and the cold water source, the cold water replenishing solenoid valve automatically opens the valve when the water pressure of the secondary circulation loop decreases, and automatically closes the valve after the cold water is filled.
10. The domestic hot water supply system of claim 2, wherein said water heater is provided with a temperature control device, said water outlet is provided at an upper end of a side wall of the water heater, and said water inlet is provided at a lower end of the side wall of the water heater or at a bottom of a tank body of the water heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221470728.7U CN217817009U (en) | 2022-06-13 | 2022-06-13 | Domestic hot water supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221470728.7U CN217817009U (en) | 2022-06-13 | 2022-06-13 | Domestic hot water supply system |
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| CN217817009U true CN217817009U (en) | 2022-11-15 |
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| CN202221470728.7U Active CN217817009U (en) | 2022-06-13 | 2022-06-13 | Domestic hot water supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117054794A (en) * | 2023-10-10 | 2023-11-14 | 北京中家智锐智能装备科技有限公司 | Water heater detection method and device |
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2022
- 2022-06-13 CN CN202221470728.7U patent/CN217817009U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117054794A (en) * | 2023-10-10 | 2023-11-14 | 北京中家智锐智能装备科技有限公司 | Water heater detection method and device |
| CN117054794B (en) * | 2023-10-10 | 2024-02-06 | 北京中家智锐智能装备科技有限公司 | Water heater detection method and device |
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