Constant-temperature and constant-pressure water supply system

Abstract

The utility model relates to the technical field of water supply systems, in particular to a constant-temperature and constant-pressure water supply system. Comprising a water tank, a circulating pump, a booster pump, a buffer tank and a refrigerating unit which are installed on a rack, the input end of the circulating pump is communicated with the bottom of the water tank, the output end of the circulating pump is communicated with one end of a heat exchange pipeline, the heat exchange pipeline is arranged in the refrigerating unit, and the other end of the heat exchange pipeline is communicated with the upper portion of the water tank; the water tank further comprises a plurality of U-shaped electric heating pipes and a temperature sensor which are linearly installed. The input end of the booster pump is communicated with the bottom of the water tank, the output end of the booster pump is communicated with a water supply pipeline, and the buffer tank and the pressure sensor are sequentially installed on the water supply pipeline. According to the utility model, the water temperature and the water pressure on the water supply pipeline can be accurately controlled so as to ensure the reliability of parameter testing.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply systems, in particular to a constant temperature and constant pressure water supply system. Background Art

[0002] Dishwashers need to undergo relevant tests before leaving the factory, such as testing various parameters such as washing energy consumption and power. It is necessary to provide the dishwasher with constant temperature and pressure water flow during parameter testing to ensure that the operation of the dishwasher is not affected by water temperature and pressure, so that the parameter test results can be guaranteed.

[0003] However, when the water supply system in the prior art supplies water, it is difficult to accurately control the water temperature and water pressure on the water supply pipeline, and the water temperature and water pressure are not stable enough to ensure the reliability of the parameter test of the dishwasher. Utility Model Content

[0004] The utility model aims to provide a constant temperature and constant pressure water supply system, which can realize accurate control of water temperature and water pressure on a water supply pipeline to ensure the reliability of parameter testing.

[0005] In order to solve the above technical problems, the utility model provides a constant temperature and constant pressure water supply system, comprising a water tank, a circulating pump, a booster pump, a buffer tank and a refrigeration unit respectively installed on a frame, the input end of the circulating pump is connected to the bottom of the water tank, and the output end is connected to one end of a heat exchange pipeline, the heat exchange pipeline is arranged inside the refrigeration unit, and the other end of the heat exchange pipeline is connected to the upper part of the water tank;

[0006] The water tank also includes a plurality of U-shaped electric heating tubes and temperature sensors installed linearly;

[0007] The input end of the booster pump is connected to the bottom of the water tank, and the output end is connected to the water supply pipeline, and the buffer tank and the pressure sensor are installed on the water supply pipeline in sequence;

[0008] The water supply pipeline between the buffer tank and the pressure sensor also includes a connected bypass pipeline, and the other end of the bypass pipeline is connected to the upper part of the water tank.

[0009] Preferably, the refrigeration unit is an air compression refrigeration unit, and the flowing water medium in the heat exchange pipeline is refrigerated by the air compression refrigeration unit.

[0010] Preferably, it also includes a water supply pipeline connected to the upper part of the water tank, which is used to add water medium into the water tank.

[0011] Preferably, it further includes a drainage pipeline connected to the bottom of the water tank, the drainage pipeline also includes an overflow pipeline connected thereto, and the other end of the overflow pipeline is connected to the upper part of the water tank.

[0012] Preferably, the water supply pipeline includes a water supply main and a water supply branch pipe; and two of the water supply branch pipes are bypassed at the end of the water supply main.

[0013] Preferably, electric ball valves are installed on the water supply branch pipe, the water supply pipeline and the drainage pipeline.

[0014] Preferably, manual ball valves are installed at the bypass pipeline, the end of the water supply branch pipe and the end of the water filling pipeline.

[0015] Preferably, it also includes an electric control box, which is electrically connected to the circulation pump, the booster pump, the refrigeration unit, the U-shaped electric heating tube, the temperature sensor, the pressure sensor and the electric ball valve respectively.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model can realize constant and precise control of the water temperature in the water supply pipeline by means of the circulating pump, heat exchange pipeline, refrigeration unit, U-shaped electric heating tube and temperature sensor; and can realize constant and precise control of the water pressure in the water supply pipeline by means of the booster pump, buffer tank, pressure sensor and bypass pipeline, so that the parameter test is not affected by the water temperature and water pressure, thereby ensuring the reliability of the test result of the dishwasher. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereoscopic diagram of a constant temperature and constant pressure water supply system of the utility model.

[0019] Figure 2 It is a front view of a constant temperature and constant pressure water supply system of the utility model.

[0020] Figure 3 It is a side view of a constant temperature and constant pressure water supply system of the utility model.

[0021] Figure 4 The utility model is a bottom view of a constant temperature and constant pressure water supply system.

[0022] In the figure: 1-frame, 2-water tank, 3-circulation pump, 4-boosting pump, 5-buffer tank, 6-refrigeration unit, 7-U-type electric heating pipe, 8-water supply pipeline, 81-water supply main pipe, 82-water supply branch pipe, 9-pressure sensor, 10-bypass pipeline, 11-water supply pipeline, 12-drainage pipeline, 13-overflow pipeline, 14-electric ball valve, 15-manual ball valve, 16-electric control box. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will become clearer. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0024] like Figures 1 to 4 As shown, the embodiment of the utility model specifically provides a constant temperature and constant pressure water supply system, including a water tank 2, a circulating pump 3, a booster pump 4, a buffer tank 5 and a refrigeration unit 6 respectively installed on a frame 1, the input end of the circulating pump 3 is connected to the bottom of the water tank 2, and the output end is connected to one end of a heat exchange pipeline, the heat exchange pipeline is arranged inside the refrigeration unit 6, and the other end of the heat exchange pipeline is connected to the upper part of the water tank 2; when the temperature of the water medium in the above-mentioned water tank 2 is too high, the refrigeration unit 6 can be controlled to perform refrigeration, and the circulating pump 3 works to pump the water medium in the water tank 2 to the heat exchange pipeline. After the flowing water medium in the heat exchange pipeline is subjected to heat exchange and refrigeration by the refrigeration unit 6, the temperature of the water medium is reduced, and then flows back to the water tank 2, so that the temperature of the water medium in the water tank 2 is continuously circulated and cooled until a suitable water temperature is reached.

[0025] The water tank 2 also includes a plurality of U-shaped electric heating tubes 7 and a temperature sensor installed linearly; when the temperature of the water medium in the water tank 2 is too low, the U-shaped electric heating tubes 7 can be controlled to heat the water medium until the appropriate water temperature is reached; the water temperature can be detected in real time by the temperature sensor.

[0026] The input end of the booster pump 4 is connected to the bottom of the water tank 2, and the output end is connected to the water supply pipeline 8, and the buffer tank 5 and the pressure sensor 9 are installed on the water supply pipeline 8 in sequence; the water pressure on the water supply pipeline 8 is detected by the above-mentioned pressure sensor 9. When the water pressure is too low, under the pumping of the booster pump 4, the water medium can circulate back to the water tank 2 through the bypass pipeline 10 for continuous circulation and pressurization until the water pressure reaches the appropriate water pressure to ensure that the water pressure is more stable. Then, the electric ball valve 14 on the water supply pipeline 8 can be controlled to open, so as to provide constant temperature and pressure water supply to the test station when performing parameter testing on external equipment such as dishwashers.

[0027] The water supply pipeline 8 between the buffer tank 5 and the pressure sensor 9 also includes a connected bypass pipeline 10, the other end of which is connected to the upper part of the water tank 2; the above-mentioned buffer tank 5 can eliminate the water pressure impact force of the booster pump 4 on the water supply pipeline 8, so as to extend the life of the water supply pipeline 8.

[0028] The refrigeration unit 6 is an air compression refrigeration unit 6, and the flowing water medium in the heat exchange pipeline is refrigerated by the air compression refrigeration unit 6.

[0029] It also includes a water supply pipeline 11 connected to the upper part of the water tank 2 for replenishing water medium into the water tank 2 .

[0030] It also includes a drainage pipe 12 connected to the bottom of the water tank 2 for discharging the water medium; the drainage pipe 12 also includes an overflow pipe 13 connected thereto, and the other end of the overflow pipe 13 is connected to the upper part of the water tank 2. When the liquid level of the water medium in the water tank 2 is too high, it can overflow to the drainage pipe 12 through the overflow pipe 13 for discharge.

[0031] The water supply pipeline 8 includes a water supply main pipe 81 and a water supply branch pipe 82; the end of the water supply main pipe 81 is bypassed by two water supply branch pipes 82, which can be connected to an external test station through a joint.

[0032] Electric ball valves 14 are installed on the water supply branch pipe 82, the water supply pipe 11 and the drainage pipe 12 to facilitate automatic switching control of the pipes.

[0033] Manual ball valves 15 are installed at the ends of the bypass pipeline 10, the water supply branch pipe 82 and the water supply pipeline 11, and the pipelines can be switched on and off as needed by manual driving.

[0034] It also includes an electric control box 16 , which is electrically connected to the circulation pump 3 , the booster pump 4 , the refrigeration unit 6 , the U-shaped electric heating tube 7 , the temperature sensor, the pressure sensor 9 and the electric ball valve 14 .

[0035] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A constant temperature and constant pressure water supply system, comprising a water tank (2), a circulation pump (3), a booster pump (4), a buffer tank (5) and a refrigeration unit (6) respectively mounted on a frame (1), characterized in that: The input end of the circulation pump (3) is connected to the bottom of the water tank (2), and the output end is connected to one end of a heat exchange pipeline, the heat exchange pipeline is arranged inside the refrigeration unit (6), and the other end of the heat exchange pipeline is connected to the upper part of the water tank (2); The water tank (2) also includes a plurality of U-shaped electric heating tubes (7) and a temperature sensor which are linearly installed; The input end of the booster pump (4) is connected to the bottom of the water tank (2), and the output end is connected to the water supply pipeline (8), and the buffer tank (5) and the pressure sensor (9) are installed in sequence on the water supply pipeline (8); The water supply pipeline (8) between the buffer tank (5) and the pressure sensor (9) also includes a communicating bypass pipeline (10), and the other end of the bypass pipeline (10) is connected to the upper part of the water tank (2).

2. A constant temperature and constant pressure water supply system as claimed in claim 1, characterized in that: The refrigeration unit (6) is an air compression refrigeration unit (6), and the flowing water medium in the heat exchange pipeline is refrigerated by the refrigeration of the air compression refrigeration unit (6).

3. A constant temperature and constant pressure water supply system as claimed in claim 1, characterized in that: It also includes a water supply pipeline (11) connected to the upper part of the water tank (2) and used for replenishing water medium into the water tank (2).

4. A constant temperature and constant pressure water supply system as claimed in claim 3, characterized in that: It also includes a drainage pipeline (12) connected to the bottom of the water tank (2), and the drainage pipeline (12) also includes an overflow pipeline (13) connected to it, and the other end of the overflow pipeline (13) is connected to the upper part of the water tank (2).

5. A constant temperature and constant pressure water supply system as claimed in claim 4, characterized in that: The water supply pipeline (8) comprises a water supply main pipe (81) and a water supply branch pipe (82); two water supply branch pipes (82) are bypassed at the end of the water supply main pipe (81).

6. A constant temperature and constant pressure water supply system as claimed in claim 5, characterized in that: The water supply branch pipe (82), the water supply pipeline (11) and the drainage pipeline (12) are all equipped with electric ball valves (14).

7. A constant temperature and constant pressure water supply system as claimed in claim 6, characterized in that: Manual ball valves (15) are installed at the ends of the bypass pipeline (10), the water supply branch pipe (82) and the water supply pipeline (11).

8. A constant temperature and constant pressure water supply system as claimed in claim 7, characterized in that: It also includes an electric control box (16), wherein the electric control box (16) is electrically connected to the circulation pump (3), the booster pump (4), the refrigeration unit (6), the U-shaped electric heating tube (7), the temperature sensor, the pressure sensor (9) and the electric ball valve (14).

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