CN201983501U - Heat pump water tank with water return device - Google Patents

Abstract

A heat pump water tank with a water return device relates to a solar water heater water tank, including a heat pump water tank, a solar water tank, a controller, pipelines and the like. The characteristic is that a heat pump water tank is added on the basis of the original solar water tank. The heat pump water tank is provided with an inner coil, which is a copper tube of 10×1.0mm, and the inside of the tube is a medium temperature and high pressure gas-liquid mixed working fluid. On the side, the heat generated by the heat pump is transferred to the coil of the water storage tank through the connecting plumbing port, and the coil dissipates heat to heat the water in the hot water storage tank. A water return pipe is provided on the top of the heat pump water tank, and a return water valve is provided at the inlet of the water return pipe; a temperature probe is arranged in the heat pump water tank, and the temperature probe is arranged in the center of the coil. The utility model has the beneficial effects of safety, environmental protection, convenient use, remarkable energy-saving effect, full realization of photoelectric complementarity, and uninterrupted supply of hot water around the clock.

Description

Heat pump tank with water return

technical field

The utility model relates to a solar water heater water tank, in particular to a solar water heater water tank with a water return device and an auxiliary heating device.

Background technique

With the development of the economy and the improvement of people's living standards, the demand for hot water in households or industrial and commercial institutions is increasing. Solar water heater is an important equipment for supplying hot water. Compared with electric water heater and gas water heater, solar water heater has higher energy utilization efficiency and remarkable energy saving effect. However, solar water heaters on the market generally adopt a single water tank structure, and the capacity of a single water tank is limited. With the arrival of guests or the increase of family members, the water consumption also needs to increase accordingly, and a single water tank is difficult to meet the demand. In addition, the water tank of the solar water heater is installed on the roof. When in use, the hot water needs to flow from the roof to the bathroom. It is greatly reduced, resulting in a lot of waste of low-temperature water. When the required water temperature is reached, one-third of the hot water stored in the water tank has flowed out, and the height of the floor may reach half or more. This wastes water resources and satisfies No request for a bath.

In addition, existing solar water heaters only rely on vacuum tubes to absorb light energy to heat water, but users cannot normally use hot water when there is no sunlight or less sunlight in cloudy, rainy, snowy days. In order to make up for this defect, water heaters with auxiliary heating have appeared on the market. The method of installing electric heating elements, that is, electric heating rods, in the water storage tank is adopted. Since the electric heating rods are relatively short, they must be installed in sections in the horizontal water storage tank, otherwise they need to be installed. The heating time is too long, this method consumes a lot of energy, does not play an energy-saving role, and the water temperature in the water tank is difficult to be uniform, resulting in no practicality, and low safety performance.

Contents of the invention

According to the above shortcomings, the utility model provides a heat pump water tank with a water return device, which solves the problem of waste of low-temperature water, and is a solar heat pump water tank that saves electricity, is safe, efficient and has a long service life.

The technical scheme adopted by the utility model is: a heat pump water tank with a water return device, including a heat pump water tank, a solar water tank, a controller, pipelines and the like. The characteristic is that a heat pump water tank is added on the basis of the original solar water tank. The heat pump water tank is provided with an inner coil, which is a 10x1.0mm copper tube, and the tube is a medium-temperature and high-pressure gas-liquid mixed working fluid. The coil is connected to the heat pump through a copper connecting pipe, and the heat pump is located on one side of the heat pump water tank. , the heat generated by the heat pump is transferred to the coil of the water storage tank through the connecting plumbing port, and the coil dissipates heat to heat the water in the hot water storage tank. A return pipe is provided on the top of the heat pump water tank, and a return water valve is provided at the inlet of the return pipe; a temperature probe is installed in the heat pump water tank, and the temperature probe is arranged in the center of the coil; a water outlet is provided at the 2/3 height on the left side of the heat pump water tank , The sewage outlet is set at the bottom, and the exhaust valve of the heat pump water tank is set at the top, which will automatically open when the air pressure in the hot water storage tank changes. The energy utilization rate and heat exchange rate are greatly improved, the energy consumption is low, the user is easy to use, the control is simple, and the increase in production cost and selling price is limited.

A water level probe is set in the solar water tank to keep the water levels of the two water tanks consistent, and an exhaust valve is arranged on the solar water tank, which is automatically opened when the air pressure in the hot water storage tank changes. The water inlet pipe of the solar water tank is equipped with a solenoid valve, and when the temperature of the stored water in the solar water tank is higher than the set temperature of the heat pump, it will flow into the heat pump water tank; The bottom enters and heats up to the set temperature through the inner coil.

A controller is provided between the solar water tank and the heat pump water tank, and the controller is connected with the water inlet solenoid valve, the return water solenoid valve, the temperature probe, the water temperature probe, the temperature control switch, and the heat pump through wires to realize the control of the water inlet and outlet respectively. , water temperature, water level, heat pump control. The bottom of the heat pump water tank is provided with a solar low-temperature water inlet, and the low-temperature water inlet is connected to the solar water tank through a water pipe; the middle part of the heat pump water tank is provided with a solar hot water inlet, and the solar hot water inlet is connected with the solar water tank through a hot water pipe. switch, and an inspection port is set on the upper end of the heat pump water tank.

The beneficial effects of the utility model are: safety: separation of water and electricity. Energy saving: Air source heat pump heating. Easy to use: refill and heat as needed, so that it can achieve the effect that domestic water is difficult to quantify. Realized the purpose of applying heat pump to solar water heater, so that the heat pump water tank with water return device can be used normally by users no matter in sunny climate conditions, or in cloudy, rainy, snowy days with no sunshine or less sunshine Hot water, the utility model saves electricity, is safe, efficient and has a long service life. Practice has shown that the operating cost of the heat pump is extremely low when producing low-temperature heat energy at 35-60°C, which is about one-third of the gas water heater and one-fifth of the electric water heater. Complementary, hot water can be supplied uninterrupted around the clock.

Description of drawings

The utility model is further described below according to accompanying drawing:

Fig. 1 is a structural representation of the utility model

As shown in the figure: 1. Backwater valve, 2. Water outlet, 3. Inspection port, 4. Heat pump water tank, 5. Heat pump water tank exhaust valve, 6. Solar hot water inlet, 7. Water level probe, 8. Solar water tank , 9. Temperature control switch, 10. Controller, 11. Solar water tank exhaust valve, 12. Solar water tank water inlet, 13. Water inlet solenoid valve, 14. Heat pump, 15. Connecting pipe, 16. Solar low temperature water inlet, 17. Temperature probe, 18. Coil pipe, 19. Return water gate, 20. Sewage outlet.

Detailed ways

Below according to specific embodiment and accompanying drawing, the utility model is further described:

Embodiment 1, as shown in Figure 1, the heat pump water tank with return water device, comprises heat pump water tank (4), solar water tank (8), controller (10), pipeline etc., on the basis of original solar water tank (8) Add a heat pump water tank (4), the heat pump water tank (4) is provided with a coil (18), the middle of the coil (18) is provided with a temperature probe (17), and the bottom of the heat pump water tank (4) is provided with a low-temperature water pipe, which is connected to the solar energy water tank. A water pipe is arranged in the middle of the heat pump water tank (4) to connect with the solar water tank (8) through a temperature control switch (9). A water inlet solenoid valve (13) is arranged on the water inlet pipe of the solar water tank (8). A controller (10) is arranged between the solar water tank (8) and the heat pump water tank (4). The controller (10) communicates with the water inlet solenoid valve (13), the water outlet solenoid valve, the temperature probe (17), the water temperature probe, The temperature control switch (9) and the heat pump (14) are connected to realize the control of water inlet, water outlet, water temperature, water level and heat pump respectively.

When using water, the water flows out from the water outlet. When the water temperature at the water outlet is lower than the set temperature, the return valve (1) is opened, and the water returns to the bottom of the heat pump water tank (4) through the return valve (1). At the same time, the controller (10 ) to control the start of the heat pump (14), so that the water in the heat pump water tank (4) is heated up. When the water temperature at the water outlet is higher than the set temperature, the water return valve (1) is closed, and the water flows to the water pipe. The water stored in the water pipe is cold water. When the water temperature of the faucet is lower than the set operating temperature, the booster water pump starts to send the low-temperature water back into the heat pump water tank (4). When the water temperature of the faucet is higher than the set operating temperature, the booster pump The water pump stopped working and hot water was flowing from the tap.

When water flows out of the heat pump water tank (4), the air pressure decreases, and the water in the solar water tank (8) begins to flow to the heat pump water tank (4). When the temperature in the solar water tank (8) is higher than the set temperature, the temperature control The switch (9) is opened, and water flows from the solar water tank (8) to the heat pump water tank (4) via the temperature control switch (9), but when the temperature of the water passing through the temperature control switch (9) is lower than the set temperature, the temperature control switch (9) ) is closed, the water turns into the heat pump water tank (4) by the solar low-temperature water inlet (16), and the controller (10) controls the heat pump (14) to start simultaneously, so that the heat in the heat pump water tank (4) is heated up. When the water level probe (7) measures that the water level in the water heater tank (8) is lower than the set height, the controller (10) controls the water inlet solenoid valve (13) to open to replenish water in the water tank.

Claims (5)

1. Heat pump water tank with water return device, including heat pump water tank, solar water tank, controller, pipeline, characterized in that a heat pump water tank is added on the basis of solar water tank; inner coil is set in the heat pump water tank, and the coil is 10mmx1.0mm The copper pipe and the coil are connected to the heat pump through the copper connecting pipe. The heat pump is arranged on one side of the heat pump water tank. The top of the heat pump water tank is provided with a return pipe, and the inlet of the return pipe is provided with a return valve; the heat pump water tank is provided with a temperature probe. The temperature probe is set in the center of the coil. 2. The heat pump water tank with a water return device according to claim 1, characterized in that a water outlet is provided at a height of 2/3 on the left side of the heat pump water tank, a sewage outlet is provided at the bottom, and a heat pump water tank exhaust valve is provided at the top, the heat pump An inspection port is provided on the top of the water tank. 3. The heat pump water tank with water return device according to claim 1, characterized in that a water level probe is arranged in the solar water tank, an exhaust valve is arranged on the solar water tank, and a solenoid valve is arranged on the water inlet pipe of the solar water tank. 4. The heat pump water tank with a water return device according to claim 1, characterized in that a controller is arranged between the solar water tank and the heat pump water tank, and the controller communicates with the water inlet solenoid valve, the return water solenoid valve, the temperature Probe, water temperature probe, temperature control switch, heat pump connection. 5. The heat pump water tank with a water return device according to claim 1, characterized in that the bottom of the heat pump water tank is provided with a solar low temperature water inlet, and the low temperature water inlet is connected to the solar water tank through a water pipe; the middle part of the heat pump water tank is provided with a solar hot water inlet, and the solar energy The hot water inlet is communicated with the solar water tank through a hot water pipe, and a temperature control switch is arranged on the hot water pipe.

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