Hot water supply device

Abstract

The utility model discloses a hot water supply device which comprises a heat preservation water tank, a heat pump unit, a water supply pipeline, a water supplementing pipeline and a water return pipeline. The heat preservation water tank is connected with a water supply pipeline, a water supplementing pipeline and a water return pipeline, the water supply pipeline is communicated with the water return pipeline, a first water supplementing electromagnetic valve is arranged between the heat preservation water tank and the water supplementing pipeline, and a water return electromagnetic valve is arranged between the heat preservation water tank and the water return pipeline. A liquid level control switch and a first temperature control switch are arranged in the heat preservation water tank, the first temperature control switch is electrically connected with the heat pump unit, and the liquid level control switch, the first temperature control switch and the first water supplementing electromagnetic valve are electrically connected and jointly controlled. And a second water replenishing pipeline provided with a second water replenishing electromagnetic valve is communicated between the water replenishing pipeline and the water supply pipeline. The heat preservation water tank can stably conduct a series of operations of water supplementing, heating, water supplying and water returning, and energy consumption and cost are effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot water supply, in particular to a hot water supply device. Background Art

[0002] In existing hot water supply devices, when the hot water supply is stopped, a certain amount of hot water usually remains in the pipeline, and this hot water is often no longer used and slowly cools down, resulting in a waste of heat and energy. In addition to the above situation, existing hot water supply devices also have various heat losses and low energy utilization rates. For these situations, there are few good methods for recycling or saving energy in the existing technology, resulting in high energy consumption of existing hot water supply devices.

[0003] Therefore, in order to solve the problem of high energy consumption in the existing hot water supply device, the utility model provides a hot water supply device. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a hot water supply device, which can ensure that the thermal water tank can stably and smoothly carry out a series of steps such as water replenishment, heating, water supply and water return, and can effectively save energy through solenoid valve control; the second water replenishment solenoid valve saves the cost and energy consumption of the air pump originally required to recover hot water, thereby reducing costs and saving energy.

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

[0006] A hot water supply device comprises a heat preservation water tank, a heat pump unit, a water supply pipe, a water supply pipe and a water return pipe;

[0007] The insulated water tank and the heat pump unit are connected through a circulation loop, the insulated water tank is respectively connected to a water supply pipe, a water replenishment pipe, and a return water pipe, the water supply pipe is communicated with the return water pipe, a water supply pump is provided between the insulated water tank and the water supply pipe, a first water replenishment solenoid valve is provided between the insulated water tank and the water replenishment pipe, and a return water solenoid valve is provided between the insulated water tank and the return water pipe;

[0008] The thermal insulation water tank is provided with a liquid level control switch and a first temperature control switch, the first temperature control switch is electrically connected to the heat pump unit, the liquid level control switch and the first temperature control switch are electrically connected to the first water replenishment solenoid valve, and jointly control the first water replenishment solenoid valve;

[0009] The thermal insulation water tank is provided with a liquid level control switch and a first temperature control switch, the first temperature control switch is electrically connected to the heat pump unit, the liquid level control switch and the first temperature control switch are electrically connected to the first water replenishment solenoid valve, and jointly control the first water replenishment solenoid valve;

[0010] The water replenishment pipeline is in communication with the water supply pipeline, a second water replenishment pipeline is in communication between the water replenishment pipeline and the water supply pipeline, and a second water replenishment solenoid valve is arranged on the second water replenishment pipeline.

[0011] Preferably, a second temperature control switch is provided on the return water pipeline, the second temperature control switch is connected in series to the water inlet end of the return water solenoid valve, and the second temperature control switch is electrically connected to the return water solenoid valve.

[0012] Preferably, the water supply pump supplies hot water from bottom to top by boosting pressure; the water supply pump is a variable frequency water pump; and a check valve is provided between the water outlet end of the water supply pump and the water supply pipe.

[0013] Preferably, the thermal insulation water tank is provided with an overflow pipe.

[0014] Preferably, the thermal insulation water tank is provided with a drain pipe.

[0015] Preferably, the heat pump units are provided in plurality, and the plurality of heat pump units are connected in parallel.

[0016] Preferably, the capacity of the thermal insulation water tank is set in direct proportion to the number of the heat pump units.

[0017] Compared with the prior art, the utility model has the following beneficial effects: by setting the heat pump unit, the water supply pipe, the water supply pipe, and the return pipe to be connected to the insulated water tank respectively, and setting the liquid level control switch and the first temperature control switch in the insulated water tank, it is conducive to ensuring that the insulated water tank can stably and smoothly carry out a series of steps of water supply, heating, water supply, and water return, and can effectively save energy consumption through solenoid valve control, which is conducive to reducing the cost and energy consumption required for hot water recovery, and improving the utilization rate of thermal energy. In addition, the second water supply solenoid valve is set to save the cost and energy consumption of the air pump originally required for hot water recovery, thereby helping to reduce costs and save energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a hot water supply device provided by the utility model;

[0019] In the figure:

[0020] Insulated water tank 1, heat pump unit 2, water supply pipe 3, water supply pipe 4, return pipe 5, water supply pump 6, first water supply solenoid valve 7, return water solenoid valve 8, liquid level control switch 9, first temperature control switch 10, second water supply solenoid valve 11, second temperature control switch 12, overflow pipe 13, drain pipe 14, check valve 15. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1 As shown, the utility model provides a hot water supply device, including a heat preservation water tank 1, a heat pump unit 2, a water supply pipe 3, a water supply pipe 4, and a return pipe 5;

[0023] The insulated water tank 1 and the heat pump unit 2 are connected through a circulation loop, the insulated water tank 1 is respectively connected to the water supply pipe 3, the water replenishment pipe 4, and the return water pipe 5, the water supply pipe 3 is connected to the return water pipe 5, a water supply pump 6 is provided between the insulated water tank 1 and the water supply pipe 3, a first water replenishment solenoid valve 7 is provided between the insulated water tank 1 and the water replenishment pipe 4, and a return water solenoid valve 8 is provided between the insulated water tank 1 and the return water pipe 5;

[0024] A liquid level control switch 9 and a first temperature control switch 10 are provided in the insulated water tank 1. The first temperature control switch 10 is electrically connected to the heat pump unit 2. The liquid level control switch 9 and the first temperature control switch 10 are electrically connected to the first water replenishment solenoid valve 7 and jointly control the first water replenishment solenoid valve 7.

[0025] During the implementation of the utility model, when the hot water supply is stopped, the return water solenoid valve 8 is opened, the second water replenishment solenoid valve 11 is opened, and the tap water is replenished into the water supply pipe 3 from the second water replenishment solenoid valve 11 by self-pressure; the remaining hot water in the water supply pipe 3 is returned to the insulated water tank 1 through the return water pipe 5 and the return water solenoid valve 8 under the action of the tap water pressure, without the need for additional power, thereby realizing hot water recovery and saving energy consumption.

[0026] The utility model is provided with a heat pump unit 2, a water supply pipe 3, a water replenishment pipe 4, and a return pipe 5, which are respectively connected to the insulated water tank 1, and a liquid level control switch 9 and a first temperature control switch 10 are provided in the insulated water tank 1, which is conducive to ensuring that the insulated water tank 1 can stably and smoothly perform a series of steps of water replenishment, heating, water supply, and water return. The solenoid valve control can effectively save energy consumption, which is conducive to reducing the cost and energy consumption required for recovering hot water, and improving the utilization rate of thermal energy; when hot water is not needed, the heat of hot water can be recovered to save energy consumption.

[0027] At the same time, by setting the return pipe 5 to have a longer portion arranged in the vertical direction, it is convenient to utilize gravity to recover hot water, which is beneficial to saving the work required for cold water to recover hot water, and further beneficial to further saving the energy consumption required for hot water recovery.

[0028] By arranging a liquid level control switch 9 and a first temperature control switch 10 in the insulated water tank 1, the water amount and water temperature in the insulated water tank 1 can be detected at any time, and by electrically connecting the first temperature control switch 10 to the heat pump unit 2, the heating water temperature can be controlled by the first temperature control switch 10; and by electrically connecting the liquid level control switch 9, the first temperature control switch 10 and the first water replenishment solenoid valve 7, the liquid level control switch 9 and the first temperature control switch 10 jointly control the first water replenishment solenoid valve 7, so as to optimize the water replenishment operation through the water amount and water temperature at the same time, which is conducive to adjusting and optimizing the timing and conditions of water replenishment and water supply, and is conducive to ensuring the water temperature and timely water replenishment.

[0029] Specifically, water replenishment is performed only when the liquid level in the thermal insulation water tank 1 is low and the temperature is high at the same time; water replenishment is stopped when the liquid level in the thermal insulation water tank 1 is high or the temperature is low. This relatively strict restriction on water replenishment can ensure that the thermal insulation water tank 1 is always supplied with hot water, thereby facilitating the priority of ensuring the water temperature in the thermal insulation water tank 1, so that the water temperature is always higher than a certain temperature value. The setting of a certain temperature value and a certain liquid level value can be adjusted according to actual conditions, as long as they are within the range of the temperature threshold and the liquid level threshold.

[0030] In this preferred embodiment, Figure 1 As shown, a second water replenishment pipeline is provided between the water replenishment pipeline 4 and the water supply pipeline 3 for communication, and a second water replenishment solenoid valve 11 is provided on the second water replenishment pipeline.

[0031] Specifically, by connecting the water replenishment pipe 4 with the water supply pipe 3 and providing a second water replenishment solenoid valve 11 between the water replenishment pipe 4 and the water supply pipe 3, when it is necessary to speed up the water replenishment speed, the second water replenishment solenoid valve 11 is opened, and then the cold water in the water replenishment pipe 4 is reversely replenished to the insulated water tank 1 through the water supply pipe 3; setting the second water replenishment solenoid valve saves the cost and energy consumption of the air pump originally required for recovering hot water, which is conducive to reducing costs and saving energy consumption.

[0032] Or when the hot water in the insulated water tank 1 is insufficient and cold water is needed, the second water replenishment solenoid valve 11 is opened, and then the cold water in the water replenishment pipe 4 is directly supplied to the water outlet through the water supply pipe 3.

[0033] In this preferred embodiment, Figure 1 As shown, a second temperature control switch 12 is provided on the return water pipe 5 , and the second temperature control switch 12 is connected in series to the water inlet end of the return water solenoid valve 8 , and the second temperature control switch 12 is electrically connected to the return water solenoid valve 8 .

[0034] Specifically, by setting a second temperature control switch 12 on the return water pipe 5, the water temperature flowing through the return water pipe 5 is detected, and the second temperature control switch 12 is electrically connected to the return water solenoid valve 8, so that the return water solenoid valve 8 is opened only when the water temperature of the water in the return water pipe 5 meets certain conditions, such as being lower than a certain temperature, to continue the return water, otherwise, the return water solenoid valve 8 is closed to stop the return water, thereby ensuring that the hot water supplied in the pipeline is hot water that meets a temperature greater than a certain temperature, avoiding the water temperature being insufficient and being discharged at the terminal, which is conducive to further saving energy consumption and water resources.

[0035] In the present preferred embodiment, the water supply pump 6 supplies hot water from bottom to top by boosting the pressure.

[0036] Specifically, the water supply pipeline is provided with a relatively long vertical water supply section, and then the water supply pump 6 performs pressurized hot water supply from bottom to top in the water supply section, so that when the hot water supply is stopped, the hot water in the water supply section can be naturally dropped by gravity to facilitate the recovery of part of the hot water, which is beneficial to save the energy consumption required for recovering hot water.

[0037] In this preferred embodiment, the water supply pump 6 is a variable frequency water pump; a check valve 15 is provided between the water outlet end of the water supply pump 6 and the water supply pipeline 3 .

[0038] Specifically, the variable frequency water pump controls the speed of the motor precisely through the frequency converter, so that it only provides the required flow when needed, thereby reducing the load on the motor and improving energy efficiency. This helps to save up to 30% to 70% of energy consumption, especially when the flow rate changes greatly. Therefore, by setting the water supply pump 6 as a variable frequency water pump, its energy-saving advantages can be fully utilized, which is conducive to further saving the energy consumption of the hot water supply device; the function of the check valve 15 is: when the cold water solenoid valve is opened, the check valve 15 ensures that the supplementary cold water replenishes the water supply pipe and does not directly replenish the insulated water tank 1.

[0039] In this preferred embodiment, Figure 1 As shown, the insulated water tank 1 is provided with an overflow pipe 13.

[0040] Specifically, by providing the overflow pipe 13 , an overflow channel can be provided when the thermal insulation water tank 1 is full of water.

[0041] In this preferred embodiment, Figure 1 As shown, the thermal insulation water tank 1 is provided with a drain pipe 14.

[0042] Specifically, by providing the drain pipe 14 , when it is necessary to drain the water in the thermal insulation water tank 1 , this can be achieved through the drain pipe 14 .

[0043] In this preferred embodiment, Figure 1As shown, a plurality of heat pump units 2 are provided, and the plurality of heat pump units 2 are connected in parallel.

[0044] Specifically, by simultaneously arranging a plurality of heat pump units 2 to heat the water in the thermal insulation water tank 1, it is beneficial to improve the heating efficiency and shorten the heating time.

[0045] In this preferred embodiment, the capacity of the thermal insulation water tank 1 is set in direct proportion to the number of heat pump units 2 .

[0046] Specifically, by setting the number of heat pump units 2 according to the capacity of the insulated water tank 1, the heating efficiency can be ensured while the entire heat pump unit 2 can reach the most suitable heating power to achieve a balance between heating efficiency and heating power, which is conducive to saving energy consumption as much as possible.

[0047] 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 hot water supply device, characterized in that: Including insulated water tank, heat pump unit, water supply pipe, water supply pipe and return pipe; The insulated water tank and the heat pump unit are connected through a circulation loop, the insulated water tank is respectively connected to a water supply pipe, a water replenishment pipe, and a return water pipe, the water supply pipe is communicated with the return water pipe, a water supply pump is provided between the insulated water tank and the water supply pipe, a first water replenishment solenoid valve is provided between the insulated water tank and the water replenishment pipe, and a return water solenoid valve is provided between the insulated water tank and the return water pipe; The thermal insulation water tank is provided with a liquid level control switch and a first temperature control switch, the first temperature control switch is electrically connected to the heat pump unit, the liquid level control switch and the first temperature control switch are electrically connected to the first water replenishment solenoid valve, and jointly control the first water replenishment solenoid valve; A second water replenishment pipeline is connected between the water replenishment pipeline and the water supply pipeline, and a second water replenishment solenoid valve is arranged on the second water replenishment pipeline.

2. A hot water supply device according to claim 1, characterized in that: The return water pipeline is provided with a second temperature control switch, the second temperature control switch is connected in series to the water inlet end of the return water solenoid valve, and the second temperature control switch is electrically connected to the return water solenoid valve.

3. A hot water supply device according to claim 1, characterized in that: The water supply pump supplies hot water from bottom to top by boosting; the water supply pump is a variable frequency water pump; a check valve is arranged between the water outlet end of the water supply pump and the water supply pipeline.

4. A hot water supply device according to claim 1, characterized in that: The thermal insulation water tank is provided with an overflow pipe.

5. A hot water supply device according to claim 1, characterized in that: The thermal insulation water tank is provided with a drain pipe.

6. A hot water supply device according to claim 1, characterized in that: The heat pump units are provided in plurality, and the plurality of heat pump units are connected in parallel.

7. A hot water supply device according to claim 1, characterized in that: The capacity of the thermal insulation water tank is set in direct proportion to the number of the heat pump units.

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