Energy-saving system of heat pump type direct drinking machine

Abstract

The utility model relates to a heat pump type direct drinking machine energy-saving system which comprises a direct drinking machine system and a heat pump system integrated on the direct drinking machine system, the direct drinking machine system comprises a water purifying device, a water pump, a direct drinking machine water tank, a first heat exchanger and a boiled water opening which are sequentially connected, and an electric heating device is arranged on the direct drinking machine water tank; the heat pump system comprises a compressor, a second heat exchanger, an electronic expansion valve and an evaporator which sequentially form a refrigerant loop, and the second heat exchanger is arranged on the outer side of the direct drinking machine water tank in a winding mode. According to the scheme, when hot water is heated, water in the water tank can be rapidly heated to the corresponding temperature through the heat pump system, the water can be used immediately after being started, an electric heating mode is not needed for heat preservation, the starting frequency of a temperature difference machine due to start and stop in the heat preservation process is reduced, and then the purpose of saving energy is achieved; compared with a traditional direct drinking machine, the water dispenser has the advantages of low power consumption, good economy, environmental protection and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of direct drinking machines, in particular to an energy-saving system for a heat pump type direct drinking machine. Background Art

[0002] Existing direct drinking machines mainly adopt the method of electric heating, with relatively large power consumption. The current mainstream energy-saving method is to use materials with good heat preservation performance to make the water tank, reduce the temperature drop of the water tank per unit time, thereby reducing the number of starts of the machine due to the start-stop temperature difference during the heat preservation process, and then achieving the purpose of energy saving. However, the above method is limited by the heat preservation material and cannot fundamentally solve the power consumption problem during the heating process. Summary of the Invention

[0003] In order to solve the above problems, the purpose of the utility model is to provide an energy-saving system for a heat pump type direct drinking machine. The system has the functions of producing direct drinking boiled water and warm water. By integrating a heat pump system on the direct drinking machine, the characteristics of high energy efficiency, environmental protection, convenience and safety of the heat pump are combined with the characteristics of purification, direct drinking and quickness of the direct drinking machine, and it can more energy-efficiently and conveniently produce the water in the water tank of the direct drinking machine into direct drinking boiled water, having advantages such as low power consumption, good economy and environmental protection compared with traditional direct drinking machines.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An energy-saving system for a heat pump type direct drinking machine, characterized in that: it includes a direct drinking machine system and a heat pump system integrated on the direct drinking machine system. The direct drinking machine system includes a water purification device, a water pump, a direct drinking machine water tank, a first heat exchanger and a boiling water outlet connected in sequence. Among them, an electric heating device is provided on the direct drinking machine water tank; a warm water pipe and a hot water pipe are abutted and arranged inside the first heat exchanger. The electric heating device is communicated with the inlet of the hot water pipe, and the boiling water outlet is communicated with the outlet of the hot water pipe; a first connecting pipe is led out from the pipe between the water pump and the direct drinking machine water tank and is communicated with the inlet of the warm water pipe of the first heat exchanger, and the outlet of the warm water pipe is communicated with a warm water outlet through a second connecting pipe;

[0006] The heat pump system includes a compressor, a second heat exchanger, an electronic expansion valve and an evaporator that sequentially form a refrigerant circuit. The second heat exchanger is coiled and arranged outside the direct drinking machine water tank.

[0007] Preferably, the second heat exchanger is a microchannel heat exchanger.

[0008] Preferably, a mixing valve is provided on the second connecting pipe, and a third connecting pipe is led out from the pipe between the first heat exchanger and the boiling water outlet and is communicated with the mixing valve.

[0009] Preferably, a food-grade inner liner is provided inside the direct drinking machine water tank.

[0010] Preferably, a float ball is provided in the water tank of the direct drinking machine, which is adapted to control the water level in the water tank of the direct drinking machine.

[0011] Preferably, a blower is provided outside the evaporator.

[0012] Preferably, the heat pump system further includes a four-way valve, which is adapted to reverse the heat pump system for defrosting under low temperature and high humidity.

[0013] The present utility model adopts the above technical solution, and the system has the functions of producing direct drinking boiled water and warm water. When the system produces boiled water, two-stage heating is adopted. In the first stage of heating, the heat pump system is first used to heat the water in the water tank of the direct drinking machine to a certain temperature. In the second stage of heating, on the basis of the temperature after the first stage of heating, the direct drinking machine system is used to heat the water to the required boiled water temperature. Specifically:

[0014] The tap water filtered by the purification device enters the water tank of the direct drinking machine. The high-temperature and high-pressure gas discharged from the exhaust port of the compressor enters the second heat exchanger to heat the surface of the water tank and exchange heat with the water in the water tank of the direct drinking machine, heating the water in the water tank of the direct drinking machine to 15°C - 55°C; after the heat pump system finishes heating, the water in the water tank of the direct drinking machine is heated to 55°C - 100°C by the electric heating device, and then flows out from the boiling water outlet through the hot water pipe of the first heat exchanger for use.

[0015] The heat pump system has the characteristics of high efficiency, energy saving and environmental protection. Therefore, when the system is heating in the first stage, it can quickly heat the water in the water tank to the corresponding temperature, that is, it can be used immediately without using the electric heating method for heat preservation, reducing the number of times the machine starts due to the start-stop temperature difference during the heat preservation process, thereby achieving the purpose of energy saving. Compared with the traditional direct drinking machine, it has the advantages of low power consumption, good economy and environmental protection.

[0016] When the system produces warm water, the purified tap water enters the first connecting pipe, absorbs the heat on the hot water pipe after passing through the first heat exchanger and is heated to warm water, and then comes out from the warm water outlet after passing through the second connecting pipe. In order to realize the adjustable temperature of the warm water outlet, a mixing valve is added to the second connecting pipe, and the hot water coming out of the first heat exchanger is introduced into the mixing valve through the third connecting pipe to be mixed with the warm water, and the control system adjusts the opening degree of the mixing valve to achieve the function of adjusting the temperature of the warm water. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a system schematic diagram of a heat pump type direct drinking machine energy saving system.

[0018] Figure 2 It is a structural schematic diagram of a heat pump type direct drinking machine. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0020] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0021] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more, unless otherwise clearly defined.

[0022] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0024] As Figures 1 - 2An energy-saving system for a heat pump type direct drinking machine shown in the figure, which includes a direct drinking machine system and a heat pump system integrated on the direct drinking machine system. The direct drinking machine system includes a water purification device 1, a water pump 2, a direct drinking machine water tank 3, a first heat exchanger 4 and a boiling water outlet 5 connected in sequence. Among them, an electric heating device 6 is provided on the direct drinking machine water tank 3; a warm water pipe and a hot water pipe are abutted and arranged inside the first heat exchanger 4. The electric heating device 6 is communicated with the inlet of the hot water pipe, and the boiling water outlet 5 is communicated with the outlet of the hot water pipe; a first connecting pipe 7 is led out from the pipe between the water pump 2 and the direct drinking machine water tank 3 and is communicated with the inlet of the warm water pipe of the first heat exchanger 4, and the outlet of the warm water pipe is communicated with a warm water outlet 9 through a second connecting pipe 8;

[0025] The heat pump system includes a compressor 10, a second heat exchanger 11, an electronic expansion valve 12 and an evaporator 13 that sequentially form a refrigerant circuit. The second heat exchanger 11 is wound around the outside of the direct drinking machine water tank 3.

[0026] In the above technical solution, by winding the second heat exchanger around the water tank of the direct drinking machine, the second heat exchanger is prevented from contacting the water body, which is more hygienic and safe. And this second heat exchanger is a part of the heat pump system. After air enters the compressor, the compressor does work, the pressure increases, and the temperature rises, becoming a high-temperature and high-pressure gaseous working medium. The working medium enters the second heat exchanger to exchange heat with the water in the water tank, and condenses into a normal-temperature and high-pressure liquid working medium. The liquid working medium enters the electronic expansion valve for throttling, the pressure decreases, and the temperature drops. The working medium changes from a liquid state to a mixed state of gas-liquid two phases. The working medium enters the evaporator to absorb heat from the air, evaporates into a normal-temperature gaseous working medium, and is finally sucked into the cavity of the compressor to complete the cycle.

[0027] In the above process, the high-temperature and high-pressure gas enters the second exchanger to release heat to heat the water in the direct drinking machine water tank, heating the water in the direct drinking machine water tank to 15°C to 55°C; after the heat pump system finishes heating, the water in the direct drinking machine water tank is heated to 55°C to 100°C by the electric heating device, and then flows out from the boiling water outlet through the hot water pipe of the first heat exchanger for use. When the system produces warm water, the purified tap water enters the first connecting pipe, absorbs the heat on the hot water pipe after passing through the first heat exchanger and is heated to warm water, and then comes out from the warm water outlet after passing through the second connecting pipe.

[0028] In the first-stage heating, the heat pump system can quickly heat the water in the water tank to the corresponding temperature, that is, it can be used immediately without using the electric heating method for heat preservation, reducing the number of starts of the machine due to the start-stop temperature difference during the heat preservation process, and thus achieving the purpose of energy saving. Compared with the traditional direct drinking machine, it has the advantages of low power consumption, good economy and environmental protection.

[0029] Further, the second heat exchanger 11 is a microchannel heat exchanger. In this technical solution, the microchannel heat exchanger has high heat exchange efficiency and is more environmentally friendly. It can quickly heat the water in the water dispenser tank to the corresponding temperature, improve energy efficiency, and be ready to use immediately without using electric heating for insulation. The corresponding number of microchannel heat exchangers can be serially arranged according to the usage requirements.

[0030] Further, a mixing valve 14 is provided on the second connecting pipe 8, and a third connecting pipe 15 is led out from the pipe between the first heat exchanger 4 and the boiling water outlet 5 and communicated with the mixing valve 14. In the above technical solution, in order to achieve adjustable temperature at the warm water outlet, a mixing valve is added to the second connecting pipe, and the hot water from the first heat exchanger is introduced into the mixing valve through the third connecting pipe to be mixed with the warm water. The opening degree of the mixing valve is adjusted by the control system to achieve the function of adjusting the warm water temperature.

[0031] Further, a food-grade inner liner is provided in the water dispenser tank 3. In the above technical solution, the food-grade inner liner can improve the heat preservation performance of the water tank and is more environmentally friendly and hygienic.

[0032] Further, a float ball is provided in the water dispenser tank 3, which is suitable for controlling the water level in the water dispenser tank 3. In the above technical solution, the float ball controls the water level in the water dispenser tank 3, enabling the water dispenser tank to replenish water in time or prevent water overflow.

[0033] Further, a blower 16 is provided outside the evaporator 13.

[0034] Further, the heat pump system further includes a four-way valve, which is suitable for reversing the heat pump system for defrosting under low temperature and high humidity. In the above technical solution, the setting of the four-way valve enables the heat pump system integrated on the water dispenser system to perform reversing defrosting under low temperature and high humidity.

[0035] In this specific embodiment, aiming at the problem that the existing water dispenser mainly uses electric heating and consumes a large amount of electricity, the above solution integrates a heat pump system on the water dispenser. In the first stage of heating, the heat pump system is first used to heat the water in the water dispenser tank to a certain temperature. In the second stage of heating, on the basis of the temperature after the first stage of heating, the water dispenser system is used to heat the water to the required boiling water temperature. The heat pump system has the characteristics of high efficiency, energy saving and environmental protection. Therefore, in the first stage of heating, it can quickly heat the water in the water tank to the corresponding temperature, be ready to use immediately, and does not need to use electric heating for insulation, reducing the number of starts of the machine due to the start-stop temperature difference during the insulation process, thereby achieving the purpose of energy saving. Compared with the traditional water dispenser, it has the advantages of low power consumption, good economy and environmental protection.

[0036] Specifically, the system has the functions of producing direct drinking boiling water and warm water:

[0037] The tap water filtered by the purification device enters the water tank of the direct drinking machine. The high-temperature and high-pressure gas discharged from the exhaust port of the compressor enters the second heat exchanger to heat the surface of the water tank and exchange heat with the water in the direct drinking machine water tank, heating the water in the direct drinking machine water tank to 15°C to 55°C. After the heat pump system finishes heating, the water in the direct drinking machine water tank is further heated to 55°C to 100°C by the electric heating device, and then flows out through the hot water pipe of the first heat exchanger from the boiling water outlet for use.

[0038] When the system produces warm water, the purified tap water enters the first connecting pipe, absorbs the heat on the hot water pipe after passing through the first heat exchanger and is heated to warm water, and then comes out from the warm water outlet after passing through the second connecting pipe. In order to achieve adjustable temperature at the warm water outlet, a mixing valve is added to the second connecting pipe. The hot water coming out of the first heat exchanger is introduced into the mixing valve through the third connecting pipe to be mixed with the warm water, and the control system adjusts the opening degree of the mixing valve to achieve the function of adjusting the temperature of the warm water.

[0039] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and purposes of the present invention.

Claims

1. A heat pump direct drinking machine energy saving system, characterized in that: The invention comprises a direct drinking machine system and a heat pump system integrated in the direct drinking machine system, wherein the direct drinking machine system comprises a water purification device (1), a water pump (2), a direct drinking machine water tank (3), a first heat exchanger (4) and a water opening (5) connected in sequence, wherein the direct drinking machine water tank (3) is provided with an electric heating device (6); a warm water pipe and a hot water pipe are provided in abutment with each other in the first heat exchanger (4); the electric heating device (6) is connected to the inlet of the hot water pipe, and the water opening (5) is connected to the outlet of the hot water pipe; a first connecting pipe (7) is provided in the pipe between the water pump (2) and the direct drinking machine water tank (3) and is connected to the inlet of the warm water pipe of the first heat exchanger (4); and the outlet of the warm water pipe is connected to a warm water opening (9) through a second connecting pipe (8); The heat pump system comprises a compressor (10), a second heat exchanger (11), an electronic expansion valve (12) and an evaporator (13) which sequentially form a refrigerant circuit, wherein the second heat exchanger (11) is coiled and arranged outside a water tank (3) of the direct drinking machine.

2. The heat pump type direct drinking machine energy saving system according to claim 1, characterized in that: The second heat exchanger (11) is a microchannel heat exchanger.

3. The heat pump direct drinking machine energy saving system according to claim 1, characterized in that: The second connecting pipe (8) is provided with a water mixing valve (14), and the pipeline between the first heat exchanger (4) and the open water port (5) is provided with a third connecting pipe (15) which is in communication with the water mixing valve (14).

4. The heat pump type direct drinking machine energy saving system according to claim 1, characterized in that: The direct drinking machine water tank (3) is provided with a food-grade inner tank.

5. The heat pump type direct drinking machine energy saving system according to claim 4, characterized in that: A float is provided in the water tank (3) of the direct drinking machine, which is suitable for controlling the water level in the water tank (3) of the direct drinking machine.

6. The heat pump direct drinking machine energy saving system according to claim 1, characterized in that: A fan (16) is provided on the outside of the evaporator (13).

7. The heat pump direct drinking machine energy saving system according to claim 6, characterized in that: The heat pump system also includes a four-way valve, which is suitable for reversing and defrosting the heat pump system under low temperature and high humidity.

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