Hot water system energy releasing device and hot water system

Abstract

The utility model discloses a hot water system energy releaser and a hot water system, the energy releaser comprises a tank body with a closed structure and four waterway interfaces, respectively a hot water inlet, a cold water inlet, a water outlet and a discharge outlet; a hot water pipe, a cold water pipe and a baffle plate are arranged in the tank body; a hot water inlet is formed in the liquid inlet end of the hot water pipe; the liquid inlet end of the cold water pipe is a cold water inlet; the hot water pipe and the cold water pipe intersect to form a water mixing structure, and the liquid outlet end of the water mixing structure faces downwards and is communicated with the inner cavity of the tank body. The water supply system adopts the energy releaser structure, and a temperature transmitter is combined with an electric regulating valve to realize PID regulation and control through a full-automatic control cabinet, so that the water outlet temperature is accurately regulated, and stable water outlet is realized. The utility model solves the problems of unstable water supply temperature and poorer water quality in a centralized hot water supply system, especially a single-pipe water supply system, energy waste of an open system and the like.

Description

Technical Field

[0001] The utility model relates to an energy release device, in particular to an energy release device for a hot water system and a hot water system applying the energy release device. Background Art

[0002] In a centralized hot water supply system, many systems use single-pipe water supply, which requires relatively stable water supply temperature. The hot water temperature generated by heat source systems such as boilers or heat exchangers is often affected by the temperature of heating equipment, fluctuations in heat source flow, and water supply pipelines. Especially for systems using plate heat exchangers, because there is no buffering capacity, a storage tank is usually required to be equipped, and circulating heating is carried out between the storage tank and the heat exchanger. For the storage tank, it is usually an open-type water tank structure, that is, cold water is heated by a plate heat exchanger and then enters the storage tank. The water in the storage tank is pressurized by a water supply unit and then supplied to the water use point, and circulating heating is carried out by a circulating unit between the storage tank and the heat exchanger to ensure the water temperature in the storage tank. However, such systems mainly have the following problems:

[0003] 1) The stability of the outlet water temperature is poor. Because the start and stop conditions of the system circulation are the temperature difference, only when there is a certain temperature difference can the circulation unit be started, which leads to large fluctuations in the water supply temperature;

[0004] 2) The storage tank is an open-type water tank, and the water quality cannot be guaranteed;

[0005] 3) The water in the storage tank needs to be pressurized by a water supply unit before it can be supplied with water, resulting in a problem of resource waste. Summary of the Utility Model

[0006] In order to solve the deficiencies of the above technologies, the utility model provides an energy release device for a hot water system and a hot water system.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: an energy release device for a hot water system, the energy release device for the hot water system has four waterway interfaces and includes a tank body;

[0008] The four waterway interfaces are respectively a hot water inlet, a cold water inlet, a water outlet, and a discharge port;

[0009] The tank body is a closed structure with the outlet pressure equivalent to the inlet pressure. A hot water pipe and a cold water pipe are arranged in the tank body. The liquid inlet end of the hot water pipe is set as the hot water inlet, and the liquid inlet end of the cold water pipe is set as the cold water inlet;

[0010] The hot water pipe and the cold water pipe form a mixed water structure after converging, and the liquid outlet end of the mixed water structure faces downward and communicates with the inner cavity of the tank body;

[0011] The water outlet is located at the top of the tank body, and the discharge port is located at the bottom of the tank body, and a sewage valve is arranged at the discharge port.

[0012] Preferably, after the hot water pipe enters the tank body, it bends downward by 90 degrees at the center to the middle and lower position of the tank body, and the distance from the liquid outlet end of the hot water pipe to the bottom of the tank body is not less than the pipe diameter of the hot water pipe.

[0013] Preferably, after the cold water pipe enters the tank body, it bends by 45 degrees and intersects with the hot water pipe.

[0014] Preferably, a baffle is also arranged in the tank body. The baffle is located above the mixing water structure composed of the hot water pipe and the cold water pipe, and there are two baffles, namely baffle one and baffle two;

[0015] Baffle two and baffle one are spaced up and down and symmetrically distributed.

[0016] Preferably, the difference between the area of the baffle and the cross-sectional area of the tank body is not less than the total cross-sectional area of the hot water pipe and the cold water pipe.

[0017] A hot water system includes a hot water system energy release device.

[0018] Preferably, a valve one is arranged upstream of the hot water inlet, an electric control valve is arranged upstream of the cold water inlet, and a temperature transmitter is arranged at the liquid outlet end of the outlet.

[0019] Preferably, the hot water system further includes a control cabinet, and the control cabinet adopts PID adjustment control and links the opening degrees of the temperature transmitter and the electric control valve.

[0020] Preferably, a filter is arranged upstream of the electric control valve, and a check valve is arranged downstream of the electric control valve;

[0021] A valve two is arranged between the check valve and the cold water inlet, and a valve three is arranged upstream of the filter.

[0022] Preferably, a pressure gauge and a thermometer are also arranged at the outlet; the outlet is connected to the water supply pipeline, and a valve four is arranged between the outlet and the water supply pipeline.

[0023] The utility model discloses a hot water system energy release device and a hot water system. The energy release device is a closed tank body structure, which replaces the traditional open system with a closed system, and uses a temperature transmitter combined with an electric control valve to realize stable water outlet temperature through full-automatic control cabinet PID adjustment control; moreover, the water outlet pressure of the closed tank body structure is equivalent to the inlet pressure, and there is no need to pressurize through a water supply unit, which can achieve the purpose of saving the investment and energy consumption of this part; in addition, the energy release device and devices such as the control cabinet can be integrated before leaving the factory, which is easy to install and simple to operate. Thus, the utility model solves the problems of unstable water supply temperature, poor water quality, and energy waste in the open system in the centralized hot water supply system, especially the single-pipe water supply system. Brief Description of the Drawings

[0024] Figure 1 This is a schematic diagram of the system structure of the present utility model.

[0025] In the figure: 1, tank body; 2, valve one; 3, hot water pipe; 4, cold water pipe; 5, valve two; 6, check valve; 7, electric control valve; 8, filter; 9, valve three; 10, pressure gauge; 11, thermometer; 12, temperature transmitter; 13, valve four; 14, control cabinet; 15, blowdown valve

[0026] a, hot water inlet; b, cold water inlet; c, water outlet; d, discharge port. Specific embodiments

[0027] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Embodiment 1:

[0029] This embodiment discloses an energy release device for a hot water system, as Figure 1 shown, which includes a tank body 1, and a hot water pipe 3, a cold water pipe 4 and a baffle are arranged in the tank body 1.

[0030] The entire tank body 1 is of a closed structure, and there is no structure directly communicating with the outside air. Since the closed structure does not contact the air, the water outlet pressure of the tank body 1 is equivalent to the water inlet pressure, so that stable water can be discharged to the water outlet point without the need for pressurization by a water supply unit. In addition, without communicating with the atmosphere, the oxygen content of the system hot water will not increase, equipment corrosion will be reduced, and the water quality will be guaranteed.

[0031] The entire energy release device for the hot water system is provided with four waterway interfaces, and the four waterway interfaces are respectively a hot water inlet a, a cold water inlet b, a water outlet c and a discharge port d;

[0032] Among them, the hot water inlet a is connected to the water outlet of a boiler or a heat exchanger, the cold water inlet b is usually connected to tap water or water treated by a water softener, silicate phosphorus crystal, etc., the water outlet c is connected to a water supply pipeline, and the discharge port d is connected to a drainage pipeline.

[0033] To meet the closed structure design of the tank body 1, the liquid inlet end of the hot water pipe 3 is used as the hot water inlet a, and the liquid inlet end of the cold water pipe 4 is used as the cold water inlet b; the water outlet c is located at the top of the tank body 1 and is directly connected to the water supply pipeline, and the discharge port d is located at the bottom of the tank body 1, and a blowdown valve 15 is provided at the discharge port d.

[0034] The hot water pipe 3 is mainly used for introducing hot water. After the hot water pipe 3 enters the tank body 1, it bends downward by 90 degrees at the center to the middle and lower position of the tank body 1, and the liquid outlet end of the hot water pipe 3 is not less than the pipe diameter of the hot water pipe 3 away from the bottom of the tank body 1.

[0035] The cold water pipe 4 is mainly used for the introduction of cold water. After entering the tank body 1 , the cold water pipe 4 is bent 45 degrees and intersects with the hot water pipe 3 .

[0036] like Figure 1 As shown, the hot water pipe 3 and the cold water pipe 4 meet to form a water mixing structure with specific structural characteristics, and the hot water and the cold water are initially mixed in the water mixing structure. In addition, the cold water pipe and the hot water pipe meet at a specific bending angle, so that the cold water is mixed into the hot water in an oblique manner, thereby ensuring that the two water inlets can be fully initially mixed.

[0037] The liquid outlet end of the water mixing structure faces downward and is connected to the inner cavity of the tank body 1 , so that the preliminarily mixed water can enter the tank body 1 .

[0038] A baffle is also provided in the tank body 1, and the baffle is located above the water mixing structure composed of the hot water pipe 3 and the cold water pipe 4, and there are two baffles, namely baffle 1 16 and baffle 2 17; baffle 1 is arranged at a height of 1 / 3 from the hot water inlet pipe 3 to the top of the tank body 1, and baffle 2 is arranged at a height of 2 / 3 from the hot water inlet pipe to the top of the tank body, and baffle 2 17 is spaced up and down from baffle 1 16 and symmetrically distributed. The mixed water entering the tank body 1 is fully mixed after passing through the baffles, and finally flows out from the water outlet c.

[0039] For baffle 1 and baffle 2, their setting size is usually related to the diameter of the tank body 1, the diameter of the cold water pipe 4 and the hot water pipe 3. In order to adapt to the use of tanks and pipelines of different sizes, the difference between the area of ​​the baffle and the cross-sectional area of ​​the tank body should not be less than the total cross-sectional area of ​​the cold water and hot water pipelines.

[0040] Therefore, for the hot water system energy releaser disclosed in this embodiment, the energy releaser tank is a closed structure and is not in contact with the outside air, so that the water inlet pressure of the tank is equivalent to the water outlet pressure, and there is no need to pressurize the water supply unit, which has the advantages of saving energy and investment. In addition, the closed structure will not contact the air, avoiding equipment corrosion, and the residence time of water in the energy releaser tank is also short, fully ensuring the water quality of the outlet water. In addition, the specific water mixing structure allows the hot water and cold water to be fully mixed initially in the process of entering the tank, and then further strengthen the mixing through the baffle, laying a better foundation for the subsequent precise control of the water temperature.

[0041] Embodiment 2:

[0042] This embodiment discloses a hot water system, which adopts the hot water system energy releaser of the first embodiment.

[0043] like Figure 1 As shown, the hot water system also includes an electric regulating valve 7, a temperature transmitter 12, a control cabinet 14 and a valve structure.

[0044] A valve 2 is provided upstream of the hot water inlet a. When the valve 2 is opened, hot water enters the internal hot water pipe 3 of the tank body 1 through the valve 2.

[0045] The electric control valve 7 is located upstream of the cold water inlet b. The flow rate of the cold water can be regulated by adjusting the opening degree of the electric control valve 7.

[0046] To ensure the quality of the cold water entering the electric control valve 7, in addition to ensuring that the water supply is tap water or water treated by a water softener, siliphos, etc., a filter 8 needs to be installed upstream of the electric control valve to avoid impurities generated by pipeline corrosion during long-term use of the system, blocking the electric control valve 7 and affecting the adjustment effect.

[0047] Meanwhile, a check valve 6 is installed downstream of the electric control valve 12 to prevent hot water from entering the cold water pipeline.

[0048] A valve 5 is provided between the check valve 6 and the cold water inlet b, and a valve 9 is provided upstream of the filter 8. When the valve 5 and the valve 9 are opened, the cold water sequentially passes through the valve 9, the filter 8, the automatic control valve 7, the check valve 6, and the valve 5 and enters the internal cold water pipe 4 of the tank body.

[0049] A temperature transmitter 12 is provided at the liquid outlet end of the outlet c to monitor the outlet water temperature of the energy release device. The sensor of the temperature transmitter 12 outputs a 4-20 mA or 0-10 V signal to the control cabinet 14.

[0050] The temperature transmitter 12 is linked with the electric control valve 7 through the control cabinet 14. A preset standard outlet water temperature range is stored in the control cabinet 14. The opening degree of the electric control valve 7 is adjusted by comparing the standard outlet water temperature with the outlet water temperature monitored by the temperature transmitter 12, so as to adjust the cold water make-up amount, and thus realize the precise control of the outlet water temperature.

[0051] The control cabinet 14 adopts PID regulation control to ensure the precise control of the outlet water temperature. The standard outlet water temperature range is usually set according to customer requirements and is adjustable.

[0052] In addition, a pressure gauge 10 for monitoring pressure and a thermometer 11 for displaying temperature are also provided at the outlet c; for the outlet c connected to the water supply pipeline, a valve 13 is provided between the outlet c and the water supply pipeline. When the valve 13 is opened, the outlet water enters the water supply pipeline to supply the water use point.

[0053] It should be particularly noted that the hot water system of this embodiment can be integrated before leaving the factory according to the size of the energy release device and the site conditions of the installation site, or can be installed on-site in separate components. The control cabinet 14 can be installed on the tank body or installed on-site locally, with the characteristics of easy installation and simple and convenient operation.

[0054] Moreover, to meet different heat demand, for example, during the peak period of centralized water supply in the system, while the heat provided by the heat source is less than the maximum hourly heat consumption, the water supply temperature of the heat source can be increased during the non-peak water usage period, the volume of the tank can be increased, and a part of energy storage can be done to meet the demand during the peak water usage period. In this case, the area ratio of the cold water pipe 4 to the hot water path 3 is increased to make the outlet water temperature meet the water demand.

[0055] Furthermore, for the hot water system of this embodiment, its water supply method is as follows:

[0056] In the normal operation state, valve one 2, valve two 5, valve three 9, and valve four 13 are all in the normally open state, and the drain valve 15 is in the normally closed state;

[0057] Hot water enters the hot water pipe 3 from the hot water inlet a, and cold water enters the cold water pipe 4 from the cold water inlet b, and the water inflow of the cold water is regulated by the electric control valve;

[0058] The cold water in the cold water pipe 4 obliquely flushes into the hot water pipe 3 and is preliminarily mixed with the hot water, and then enters the tank 1, and then is further mixed by the baffle plate and reaches the upper part of the tank 1. The mixed warm water flows out from the outlet c and is supplied to the water usage point;

[0059] Since the tank 1 is a closed structure, the outlet water pressure is equivalent to the inlet water pressure. Without the external force of the water supply unit, as the water continuously enters the tank 1, the water stably flows out from the outlet c;

[0060] The outlet water temperature of the energy release device is detected by the temperature transmitter 12, and the control cabinet 14 uses PID regulation control to judge the preset outlet water temperature and the detected outlet water temperature situation, and adjusts the cold water make-up volume of the electric control valve 7 to make the outlet water temperature at the outlet c stable at the set temperature.

[0061] In summary, for the hot water system of this embodiment, the energy release device continuously and stably provides hot water at a set temperature. It is especially suitable for hot water supply systems with relatively constant temperature requirements. The hot water generated by the boiler or heat exchanger heat exchange system enters the energy release device, and the cold water enters the energy release device through the automatic regulating valve. With the supporting temperature transmitter and intelligent control cabinet, hot water at the set temperature is generated. When the system uses water, the hot water generated by the boiler or heat exchanger heat exchange at the hot water end enters the energy release device by relying on the make-up water pressure, and the tap water enters the energy release device by relying on the tap water pressure. The two water sources pass through a specific mixing structure, are fully mixed, and by controlling the opening of the electric control valve at the tap water inlet, the cold water make-up volume is adjusted to achieve precise adjustment of the outlet water temperature and make the outlet water temperature stable at the set temperature.

[0062] Compared with the prior art, it has the following technical advantages:

[0063] 1) The adopted energy release device has a closed tank structure. The closed system does not contact the atmosphere, the residence time of water in the equipment is short, which ensures the water quality of the effluent, the effluent is stable, and the water quality is good. Therefore, the problem of poor water quality caused by the connection of the open water supply tank to the atmosphere is solved.

[0064] 2) The adopted energy release device has a closed tank structure. The effluent pressure of the closed system is equivalent to the inlet pressure, and there is no need to pressurize through the water supply unit, which can save the investment and energy consumption of this part and has the advantage of cost reduction and efficiency improvement.

[0065] 3) The specific mixing structure and reasonable baffle design enable the cold water and hot water to be fully mixed, and through the combination of a temperature transmitter and an electric control valve, PID regulation and control are carried out through a full-automatic control cabinet to achieve precise adjustment of the effluent temperature and stable effluent.

[0066] 4) The system device can be integrated before leaving the factory, with a small floor area, easy to install, and simple and convenient to operate.

[0067] The above embodiments are not limitations on the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model also fall within the protection scope of the present utility model.

Claims

1. A hot water system energy release device, characterized in that: The hot water system energy releaser has four water channel interfaces and includes a tank body (1); The four water channel interfaces are respectively a hot water inlet (a), a cold water inlet (b), a water outlet (c) and a discharge outlet (d); The tank body (1) is a closed structure in which the water outlet pressure is equivalent to the water inlet pressure. A hot water pipe (3) and a cold water pipe (4) are arranged in the tank body (1). The liquid inlet end of the hot water pipe (3) is set as a hot water inlet (a), and the liquid inlet end of the cold water pipe (4) is set as a cold water inlet (b). The hot water pipe (3) and the cold water pipe (4) are joined to form a water mixing structure, wherein the liquid outlet end of the water mixing structure faces downward and is connected to the inner cavity of the tank body (1); The water outlet (c) is located at the top of the tank body (1), and the discharge port (d) is located at the bottom of the tank body (1), and a sewage valve (15) is provided at the discharge port (d).

2. The energy release device of the hot water system according to claim 1, wherein: After entering the tank body (1), the hot water pipe (3) is bent 90 degrees downward at its centre to the lower middle position of the tank body (1), and the distance between the liquid outlet end of the hot water pipe (3) and the bottom of the tank body (1) is not less than the pipe diameter of the hot water pipe (3).

3. The energy release device of the hot water system according to claim 2, characterized in that: The cold water pipe (4) is bent 45 degrees after entering the tank body (1) and intersects with the hot water pipe (3).

4. The energy release device of the hot water system according to claim 1 or 3, characterized in that: The tank body (1) is also provided with a baffle, which is located above the water mixing structure formed by the hot water pipe (3) and the cold water pipe (4), and there are two baffles, namely baffle one (16) and baffle two (17); The baffle plate 2 (17) and the baffle plate 1 (16) are spaced apart and symmetrically distributed above and below each other.

5. The energy release device of the hot water system according to claim 4, characterized in that: The difference between the baffle area and the tank cross-sectional area is not less than the total cross-sectional area of ​​the hot water pipe (3) and the cold water pipe (4).

6. A hot water system, characterized in that: The invention comprises the hot water system energy releaser as claimed in claim 4.

7. The hot water system according to claim 6, characterized in that: A valve 1 (2) is provided upstream of the hot water inlet (a), an electric regulating valve (7) is provided upstream of the cold water inlet (b), and a temperature transmitter (12) is provided at the liquid outlet end of the water outlet (c).

8. The hot water system according to claim 7, characterized in that: The hot water system further comprises a control cabinet (14), wherein the control cabinet (14) adopts PID regulation control and links the opening of the temperature transmitter (12) and the electric regulating valve (7).

9. The hot water system according to claim 8, characterized in that: A filter (8) is provided upstream of the electric regulating valve (7), and a check valve (6) is provided downstream of the electric regulating valve (7); A second valve (5) is provided between the check valve (6) and the cold water inlet (b), and a third valve (9) is provided upstream of the filter (8).

10. The hot water system according to claim 9, wherein: The water outlet (c) is also provided with a pressure gauge (10) and a temperature gauge (11); the water outlet (c) is connected to a water supply pipeline, and a valve four (13) is provided between the water outlet (c) and the water supply pipeline.

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