Novel hot water pipe cold water recycling device

Abstract

The utility model belongs to the field of heating source cold water recycling equipment, and particularly relates to a novel hot water pipe cold water recycling device which comprises a heating source, a cold and hot water using end, a cold water using end and a cold water pipe connected with a water source, and the hot water pipe and the cold water pipe are connected to the heating source, the cold and hot water using end and the cold water using end respectively. The heating source is connected with a cold-hot water using end through a hot water pipe; the recycling device further comprises a high-level water storage tank, a cold water recycling pipe and a cold water utilization pipe. The cold and hot water using end is connected to the high-level water storage tank through a cold water recycling pipe; the high-level water storage tank is connected to a cold water using end through a cold water using pipe. According to the full-automatic cold water recycling device, early-stage cold water in the hot water pipe between the heating source and the water using appliance is recycled and reused, full-automatic cold water recycling and utilization are achieved only by means of tap water supply pressure, running cost is zero, and energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The utility model relates to the field of heating source cold water recovery equipment, in particular to a novel hot water pipe cold water recovery and utilization device. Background Art

[0002] my country has abundant water resources, but the per capita water resources are small. Even so, some water waste in daily life seems inevitable. For example, when using hot water in daily life, we always need to drain some cold water from the hot water pipe first, which may take tens of seconds or even several minutes. According to the international household faucet standard, the minimum flow rate is 6 liters per minute. Each person uses it 10 times a day on average, and the cold water is drained for an average of 30 seconds each time. For three people in each household, each household wastes about 30 cubic meters a year. This waste of cold water discharge from hot water pipes occurs in thousands of households, and the resulting water waste is huge.

[0003] After searching, it was found that the mainstream solutions currently on the market require the use of return pipes and return pumps, which on the one hand bring additional energy consumption costs, and on the other hand the installation of pipelines is complicated. In addition, the return pump is prone to noise after long-term use and has a short update period. Utility Model Content

[0004] The purpose of the utility model is to provide a new type of cold water recovery and utilization device for domestic water use, aiming to solve the problem of water resource waste caused by cold water discharge in the pipeline between the heating source and the water use point, as well as the problem of high implementation and operation costs of existing cold water recovery technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A novel hot water pipe cold water recycling device comprises a heating source, a hot and cold water use end, a cold water use end, a cold water pipe connected to the water source, a hot water pipe, and a cold water pipe connected to the heating source, the hot and cold water use end, and the cold water use end, respectively, and the heating source is connected to the hot and cold water use end through the hot water pipe;

[0007] The recycling device also includes a high-level water storage tank, a cold water recovery pipe, and a cold water utilization pipe;

[0008] The hot and cold water use end is connected to the high-level water storage tank through a cold water recovery pipe;

[0009] The high-level water storage tank is connected to the cold water use end through a cold water use pipe.

[0010] As a further preferred solution, the hot and cold water use end includes a water inlet pipe, the water inlet end of the water inlet pipe has a mixing valve, and the hot water pipe and the cold water pipe are respectively connected to the mixing valve.

[0011] As a further preferred solution, a thermostatic reversing valve is provided in the middle section of the water inlet pipe, and the thermostatic reversing valve is connected to the cold water recovery pipe.

[0012] As a further preferred solution, check valves are respectively provided on the cold water recovery pipe and the cold water utilization pipe.

[0013] As a further preferred solution, a pressure reducing valve is provided on the pipe connecting the cold water pipe at the cold water use end, and the pressure after the pressure reducing valve is set to 0.01-0.02 MPa, which is lower than the water pressure value corresponding to the installation elevation of the high-level water storage tank.

[0014] As a further preferred solution, the hot and cold water usage ends are the shower end and the wash end.

[0015] As a further preferred solution, the cold water user is a toilet, a urinal, a mop pool, and a washing machine.

[0016] The utility model realizes the recovery and reuse of the previous cold water in the hot water pipe between the heating source and the water-using appliance by arranging a high-position water storage tank, a constant temperature reversing valve, a pressure reducing valve and other devices in a conventional household water pipe. The utility model has the advantages of: adopting the hydraulic mechanical principle, relying only on the tap water supply pressure to realize full-automatic cold water recovery and utilization, zero operating cost, energy saving and environmental protection; no need to use any electrical equipment, simple and reliable structure and no safety hazard of leakage; small modification to the existing pipe system, easy installation and low modification implementation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a pipeline schematic diagram of the utility model;

[0018] In the figure: 1-heating source; 2-hot water pipe; 3-cold water pipe; 11-shower end; 12-mixing valve; 13-constant temperature reversing valve; 14-cold water recovery pipe; 15-check valve; 21-washing end; 31-cold water use end, 33 pressure reducing valve; 34-cold water utilization pipe; 41-high-level water storage tank. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] like Figure 1 As shown: A novel hot water pipe cold water recycling device comprises a cold water recycling device, a cold water utilization device, and a heating source;

[0021] The cold water recovery device includes a thermostatic reversing valve 13 and a cold water recovery pipe 14:

[0022] The cold water utilization device includes a cold water utilization end 31, a pressure reducing valve 33, a high-level water storage tank 41, and a cold water utilization pipe 34;

[0023] The heating source 1 is a tap water cold water heating device, such as an electric heating source, a gas heating source, etc., including a hot water outlet and a cold water inlet, which can heat the cold water from the cold water pipe 3, so as to heat the cold water entering the heating source 1 and then transport it to the hot water pipe 2;

[0024] Specifically, the hot water pipe 2 is connected to the hot water outlet of the heating source 1 , and is connected to the shower end 11 and the washing end 21 (wash basin) in sequence, and the cold water pipe 3 is connected to the cold water inlet of the heating source 1 .

[0025] The shower end 11 (wash end 21) includes a mixing valve 12, which has a hot water inlet, a cold water inlet and a mixing outlet, which are respectively connected to the hot water pipe 2, the cold water pipe 3 (tap water pipe) and the constant temperature reversing valve 13, so as to achieve the purpose of adjusting the water temperature by mixing hot water and cold water.

[0026] One end of the cold water recovery pipe 14 is connected to the cold water outlet of the thermostatic reversing valve 13, and the other end is connected to the water inlet of the high-level water storage tank 41.

[0027] The thermostatic reversing valve 13 has a water inlet, a hot water outlet, and a cold water outlet. The water inlet of the thermostatic reversing valve 13 is connected to the mixing valve 12, the hot water outlet of the thermostatic reversing valve 13 is connected to the shower end 11 (washing end 21), and the cold water outlet is connected to the cold water recovery pipe 14. The thermostatic reversing valve 13 controls the direction of water flow by setting the temperature. When the water temperature before the valve is higher than the temperature setting value, it flows out from the hot water outlet. Otherwise, it flows out from the cold water outlet. For example, when the temperature setting value is 38 degrees, when the water temperature is higher than 38 degrees, it flows out from the shower end 11 (washing end 21) for workers to use. When the temperature is lower than 38 degrees, it flows out from the cold water recovery pipe 14 and is stored in the high-level water storage tank 41.

[0028] A check valve 15 is provided on the cold water recovery pipe 14, which is located between the cold water outlet of the thermostatic reversing valve 13 and the high-level water storage tank 41, and is used to prevent the water in the high-level water storage tank from flowing back.

[0029] The high-level water storage tank 41 is used to store recovered cold water and has a water inlet and a water outlet. The number of water inlets is determined by the number of thermostatic reversing valves installed. The water inlet is connected to one end of the cold water recovery pipe 14, and the water outlet is connected to one end of the cold water utilization pipe 34.

[0030] The high-position water storage tank 41 is arranged at a position higher than the hot water pipe and the cold water pipe of the tap water, and can usually be placed on the indoor ceiling, with a height of about 2.0 to 2.5 meters.

[0031] One end of the cold water utilization pipe 34 is connected to the water outlet of the high-level water storage tank, and the other end is connected to the water inlet of the cold water appliance 31 together with the tap water cold water pipe 3 through a tee.

[0032] A check valve 15 is also provided on the cold water utilization pipe 34 to control the flow direction of water, allowing water to flow only from the high-level water storage tank 41 to the cold water use end 31, but not vice versa.

[0033] The pressure reducing valve 33 is arranged on the cold water pipe 3 at the front end of the tee. The pressure reducing valve 33 is an existing product. The pressure after the valve is set to 0.01-0.02 MPa according to the installation elevation of the high-level water storage tank, which is slightly lower than the water pressure value corresponding to the elevation of the bottom of the high-level water storage tank. In this way, the pressure after the valve can be controlled to be lower than the height of the water tank, that is, when there is water in the water tank, water is preferentially supplied from the high-level water tank to the cold water-using appliances, thereby realizing the utilization of the cold water in the high-level water storage tank.

[0034] In the initial state, the mixing valve 12 at the hot and cold water use end is closed, the water temperature in the water inlet pipe at the hot and cold water use end is lower than the temperature setting value of the thermostatic reversing valve 13, the cold water outlet of the thermostatic reversing valve 13 remains open, and the hot water outlet remains closed. Turn on the mixing valve 12 switch at the shower end or the wash basin, and the cold water in the hot water pipe 2 flows to the cold water outlet of the thermostatic reversing valve 13 through the mixing valve 12, and then uses the pipeline pressure to recover to the high-level water storage tank 41 through the cold water recovery pipe 14. As the hot water gradually arrives, when the water temperature at the thermostatic reversing valve 13 reaches the set temperature, the thermostatic reversing valve 13 automatically switches to the hot water outlet, and water flows from the hot water outlet of the thermostatic reversing valve 13 to the shower end or the wash basin. After using the water, close the mixing valve 12 and the system returns to the initial state.

[0035] The utility model effectively recycles the cold water wasted before the hot water is used, and enters the cold water using end and other water-using appliances for reuse, thereby achieving the purpose of water resource conservation and energy saving and emission reduction.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel hot water pipe cold water recycling device, comprising a heating source (1), a hot and cold water use end, a cold water use end (31), a cold water pipe (3) connected to a water source, a hot water pipe (2), and a cold water pipe (3) respectively connected to the heating source (1), the hot and cold water use end, and the cold water use end (31), wherein the heating source (1) is connected to the hot and cold water use end via the hot water pipe (2); Features: The recycling device further comprises a high-position water storage tank (41), a cold water recovery pipe (14), and a cold water utilization pipe (34); The cold and hot water use end is connected to a high-position water storage tank (41) via a cold water recovery pipe (14); The high-level water storage tank (41) is connected to the cold water use end (31) via a cold water utilization pipe (34).

2. A new type of hot water pipe cold water recycling device according to claim 1, characterized in that: The hot and cold water use end comprises a water inlet pipe, the water inlet end of the water inlet pipe is provided with a water mixing valve (12), and the hot water pipe (2) and the cold water pipe (3) are respectively connected to the water mixing valve (12).

3. A new type of hot water pipe cold water recycling device according to claim 2, characterized in that: A thermostatic reversing valve (13) is provided at the middle section of the water inlet pipe, and the thermostatic reversing valve (13) is connected to the cold water recovery pipe (14).

4. A new type of hot water pipe cold water recycling device according to claim 1 or 3, characterized in that: The cold water recovery pipe (14) and the cold water utilization pipe (34) are respectively provided with a check valve (15).

5. A new type of hot water pipe cold water recycling device according to claim 4, characterized in that: A pressure reducing valve (33) is provided on the pipe connecting the cold water use end (31) to the cold water pipe (3). The pressure behind the pressure reducing valve (33) is set to 0.01-0.02 MPa, which is lower than the water pressure value corresponding to the installation elevation of the high-position water storage tank (41).

6. A new type of hot water pipe cold water recycling device according to claim 1, characterized in that: The hot and cold water use ends are a shower end (11) and a wash end (21).

7. A new type of hot water pipe cold water recycling device according to claim 1, characterized in that: The cold water use end (31) is a toilet, a urinal, a mop pool, or a washing machine.

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