Heat Pump Water Heater System

Abstract

The present invention provides a heat pump water heater system, which relates to the technical field of heating equipment, and solves the technical problems of low heat exchange efficiency and poor heat exchange in the microchannel static heat exchange mode in the heat exchanger system. The heat pump water heater system includes a water system, a refrigerant system for static heat exchange with the water system, and a dynamic flow component that can increase the contact amount between the water in the water system and the refrigerant system per unit time; the dynamic flow component includes a first turbine, a second turbine and a dynamic flow circuit, the first turbine is arranged in the refrigerant flow path of the refrigerant system, the second turbine is arranged on the dynamic flow circuit, and is connected to the first turbine through a connecting member; the inlet and outlet ends of the dynamic flow circuit are both arranged in the water tank of the water system. The present invention drives the first turbine to rotate through the refrigerant, the rotation of the first turbine drives the rotation of the second turbine through the transmission shaft, and the rotation of the second turbine drives the water in the water tank to circulate, and the water circulation in the water tank increases the contact amount between the water and the water tank per unit time, thereby greatly improving the heat exchange efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of heating equipment, and in particular to a heat pump water heater system. Background Art

[0002] At present, most of the heat pump water heaters adopt the external disk microchannel static heat exchange heating method. This heat exchange method mainly uses the heat conduction of the flowing refrigerant in the microchannel from the microchannel to the inner tank wall, and then from the inner tank wall to the water in the water tank tank. During the whole static heating process, the water in the tank can only rely on its own different temperature and density to generate convection for heat exchange, and the heat exchange efficiency is low. The system has problems such as poor heat exchange of the condenser and high pressure. In view of the shortcomings of the current system, a more efficient and reliable heat pump water heater system is proposed. Summary of the invention

[0003] The object of the present invention is to provide a heat pump water heater system to solve the technical problems of low heat exchange efficiency and poor heat exchange in the microchannel static heat exchange method in the water heater system in the prior art.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention provides a heat pump water heater system, comprising a water system, a refrigerant system for static heat exchange with the water system, and a dynamic flow component capable of increasing the contact amount between the water in the water system and the refrigerant system per unit time.

[0006] As a further improvement of the present invention, the way in which the dynamic flow component increases the contact amount per unit time is to make the water in the water system flow.

[0007] As a further improvement of the present invention, the dynamic flow component is arranged between the refrigerant system and the water system.

[0008] As a further improvement of the present invention, the dynamic flow component includes a first turbine, a second turbine and a dynamic flow circuit, the first turbine is arranged in the refrigerant flow path of the refrigerant system, the second turbine is arranged on the dynamic flow circuit, and is transmission-connected to the first turbine through a connecting piece; the inlet end and the outlet end of the dynamic flow circuit are both arranged in the water tank of the water system.

[0009] As a further improvement of the present invention, the dynamic flow component also includes a speed-increasing and temperature-reducing device arranged in the refrigerant flow path of the refrigerant system and located on the upstream side of the first turbine.

[0010] As a further improvement of the present invention, the speed increasing and temperature reducing device is a capillary tube.

[0011] As a further improvement of the present invention, the speed-increasing and temperature-reducing device is a first electronic expansion valve.

[0012] As a further improvement of the present invention, the dynamic flow component also includes a filtering device arranged on the upstream side of the speed-increasing and temperature-reducing device.

[0013] As a further improvement of the present invention, the refrigerant system includes a compressor, a four-way valve, a first filter, a second electronic expansion valve, a second filter, an evaporator, and a gas separator which are sequentially connected together through a refrigerant flow path to form a closed-loop refrigerant circuit.

[0014] As a further improvement of the present invention, the water system includes a water tank and a condenser arranged in the water tank, the refrigerant flow path is connected to the condenser, and the first turbine is arranged on the refrigerant flow path between the first filter and the condenser.

[0015] As a further improvement of the present invention, the inlet end of the dynamic flow circuit is located at the upper part of the water tank, and the outlet end of the dynamic flow circuit is located at the lower part of the water tank.

[0016] As a further improvement of the present invention, the connecting member is a transmission shaft.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The heat pump water heater system provided by the present invention effectively solves the problem that the water in the inner tank does not circulate effectively during the heat exchange process of the water tank, affecting the heat exchange efficiency, and the system condenser has high heat exchange difference and pressure difference by adding a dynamic flow component. By arranging a first turbine, a second turbine and a dynamic flow circuit, the flowing refrigerant in the refrigerant system drives the first turbine to rotate, and the rotation of the first turbine drives the second turbine to rotate through a transmission shaft. The second turbine is connected to the water system, and the rotation of the second turbine drives the water in the water tank to circulate. The circulation of the water in the inner tank increases the contact amount between the water and the inner tank per unit time, thereby greatly improving the heat exchange efficiency. The refrigerant system arranges a capillary tube or a first electronic expansion valve upstream of the first turbine for primary throttling. After throttling, the refrigerant flow rate increases and the temperature decreases. The increase in flow rate is conducive to driving the first turbine to rotate, and the reduction in the refrigerant temperature can absorb heat from the environment for preliminary evaporation, thereby further improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a system flow chart of the heat pump water heater system of the present invention.

[0021] In the figure, 1 is the first turbine; 2 is the second turbine; 3 is the dynamic flow circuit; 31 is the inlet end; 32 is the outlet end; 4 is the water tank; 5 is the capillary tube; 6 is the filtering device; 7 is the compressor; 8 is the four-way valve; 9 is the first filter; 10 is the second electronic expansion valve; 11 is the second filter; 12 is the evaporator; 13 is the gas separator; and 14 is the condenser. DETAILED DESCRIPTION

[0022] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0023] like Figure 1 As shown, the present invention provides a heat pump water heater system, including a water system, a refrigerant system for static heat exchange with the water system, and a dynamic flow component capable of increasing the contact amount between the water in the water system and the refrigerant system per unit time.

[0024] Specifically, the way in which the dynamic flow component increases the contact volume per unit time is to make the water in the water system flow.

[0025] Furthermore, the dynamic flow component is arranged between the refrigerant system and the water system.

[0026] As an optional embodiment of the present invention, the dynamic flow component includes a first turbine 1, a second turbine 2 and a dynamic flow circuit 3, the first turbine 1 is arranged in the refrigerant flow path of the refrigerant system, the second turbine 2 is arranged on the dynamic flow circuit 3, and is transmission-connected to the first turbine 1 through a connecting piece; the inlet end 31 and the outlet end 32 of the dynamic flow circuit 3 are both arranged in the water tank 4 of the water system.

[0027] The dynamic flow component also includes a speed increasing and temperature decreasing device which is arranged in the refrigerant flow path of the refrigerant system and is located on the upstream side of the first turbine 1 .

[0028] Furthermore, the speed increasing and cooling device is a capillary tube 5 .

[0029] As an option, the speed-increasing and cooling device may also be a first electronic expansion valve, which can adjust the opening in real time according to the needs of the system to accurately control the turbine flow rate.

[0030] The dynamic flow component also includes a filtering device 6 arranged on the upstream side of the speed increasing and temperature decreasing device.

[0031] The refrigerant system includes a compressor 7, a four-way valve 8, a first filter 9, a second electronic expansion valve 10, a second filter 11, an evaporator 12, and a gas separator 13, which are sequentially connected together through a refrigerant flow path to form a closed refrigerant circuit.

[0032] The water system includes a water tank 4 and a condenser 14 disposed in the water tank 4 . The refrigerant flow path is connected to the condenser 14 for static heat exchange. The first turbine 1 is disposed on the refrigerant flow path between the first filter 9 and the condenser 14 .

[0033] It should be noted that the condenser 14 in the present invention is a microchannel heat exchanger.

[0034] The inlet end 31 of the dynamic flow loop 3 is located at the upper part of the water tank 4 , and the outlet end 32 of the dynamic flow loop 3 is located at the lower part of the water tank 4 .

[0035] Furthermore, the connecting member is a transmission shaft.

[0036] Specific usage:

[0037] The refrigerant system is running. When heating, the compressor 7 is powered on and the high-pressure and high-temperature gas refrigerant is discharged from the exhaust port of the compressor 7 and enters the D of the four-way valve 8 and flows out from the C port. It flows into the condenser 14 in the water tank 4 through the refrigerant flow path for condensation. The high-pressure liquid refrigerant after condensation flows out from the condenser 14 into the capillary tube 5 for primary throttling. The refrigerant flow rate increases after the pressure difference throttling. At this time, the throttled refrigerant enters the first turbine 1 and drives it to rotate. At the same time, the refrigerant pressure and temperature decrease after throttling. The refrigerant absorbs heat from the air through the first turbine 1. After passing through the first turbine 1, the refrigerant passes through the first filter 9 to the second electronic expansion valve 10 to enter Secondary throttling is performed. After throttling, the low-temperature and low-pressure liquid refrigerant enters the second filter 11 and then enters the evaporator 12 for evaporation. After evaporation, the low-pressure and low-temperature gas refrigerant enters the E port of the four-way valve 8 and exits the S port and then enters the air inlet of the compressor 7. At the same time, the water system is running, and the first turbine 1 in the refrigerant system drives the second turbine 2 in the water system to rotate through the transmission shaft. The second turbine 2 rotates to draw water from the inner tank of the water tank 4 from the outlet end 32 and then enters from the inlet end 31, so that the water in the inner tank is circulated to increase the contact amount between water and the inner tank wall per unit time, thereby improving heat exchange. The refrigerant is fully condensed in the condenser 14 and the system pressure is low.

[0038] The refrigerant system is running. During defrosting, the compressor 7 is powered on and running, and the four-way valve 8 is powered on and switched. The high-pressure and high-temperature gas refrigerant is discharged from the exhaust port of the compressor 7 and enters the D port of the four-way valve 8 and flows out from the E port, and then flows into the evaporator 12 for condensation. After condensation, the high-pressure liquid refrigerant flows out from the evaporator 12, passes through the second filter 11, and then enters the second electronic expansion valve 10 for primary throttling. After throttling, it flows into the first filter 9, and then enters the first turbine 1 through the refrigerant flow path, driving the first turbine 1 to reverse, and then enters the capillary 5 for secondary throttling. After secondary throttling, the low-pressure and low-temperature refrigerant flows into the water tank 4 is evaporated, and after evaporation, the low-pressure and low-temperature gas refrigerant enters from the C port of the four-way valve 8 and exits from the S port, and then enters the air inlet of the compressor 7; at the same time, the water system is running, and the first turbine 1 in the refrigerant system reverses and drives the second turbine 2 in the water system to reversely rotate through the transmission shaft. The second turbine 2 reversely rotates to draw water from the inner tank of the water tank 4 from the inlet end 31 and then enters from the outlet end 32, so as to circulate the water in the inner tank, increase the contact amount between water and the inner tank wall per unit time, thereby improving heat exchange, reducing defrosting time, increasing the time and number of heating operations of the system, and improving heat exchange efficiency and reliability.

[0039] The heat pump water heater system provided by the present invention effectively solves the problem that the water in the inner tank does not circulate effectively during the heat exchange process of the water tank, affecting the heat exchange efficiency, and the system condenser has high heat exchange difference and pressure difference by adding a dynamic flow component. By arranging a first turbine, a second turbine and a dynamic flow circuit, the flowing refrigerant in the refrigerant system drives the first turbine to rotate, and the rotation of the first turbine drives the second turbine to rotate through a transmission shaft. The second turbine is connected to the water system, and the rotation of the second turbine drives the water in the water tank to circulate. The circulation of the water in the inner tank increases the contact amount between the water and the inner tank per unit time, thereby greatly improving the heat exchange efficiency. The refrigerant system arranges a capillary tube or a first electronic expansion valve upstream of the first turbine for primary throttling. After throttling, the refrigerant flow rate increases and the temperature decreases. The increase in flow rate is conducive to driving the first turbine to rotate, and the reduction in the refrigerant temperature can absorb heat from the environment for preliminary evaporation, thereby further improving the heat exchange efficiency.

[0040] First of all, it should be explained here that “inward” refers to the direction toward the center of the accommodating space, and “outward” refers to the direction away from the center of the accommodating space.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0046] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A heat pump water heater system, characterized in that: It includes a water system, a refrigerant system for static heat exchange with the water system, and a dynamic flow component capable of increasing the contact amount between the water in the water system and the refrigerant system per unit time; The dynamic flow component includes a first turbine, a second turbine and a dynamic flow circuit. The first turbine is arranged in the refrigerant flow path of the refrigerant system, the second turbine is arranged on the dynamic flow circuit and is transmission-connected to the first turbine through a connecting piece; the inlet end and the outlet end of the dynamic flow circuit are both arranged in the water tank of the water system.

2. The heat pump water heater system according to claim 1, characterized in that: The way in which the dynamic flow component increases the contact volume per unit time is to make the water in the water system flow.

3. The heat pump water heater system according to claim 2, characterized in that: The dynamic flow component is arranged between the refrigerant system and the water system.

4. The heat pump water heater system according to claim 1, characterized in that: The dynamic flow component also includes a speed increasing and temperature reducing device arranged in the refrigerant flow path of the refrigerant system and located at the upstream side of the first turbine.

5. The heat pump water heater system according to claim 4, characterized in that: The speed increasing and temperature reducing device is a capillary tube.

6. The heat pump water heater system according to claim 4, characterized in that: The speed increasing and temperature reducing device is a first electronic expansion valve.

7. The heat pump water heater system according to claim 4, characterized in that: The dynamic flow component also includes a filtering device arranged on the upstream side of the speed increasing and temperature decreasing device.

8. The heat pump water heater system according to claim 1, characterized in that: The refrigerant system includes a compressor, a four-way valve, a first filter, a second electronic expansion valve, a second filter, an evaporator, and a gas separator, which are sequentially connected together through a refrigerant flow path to form a closed refrigerant circuit.

9. The heat pump water heater system according to claim 8, characterized in that: The water system includes a water tank and a condenser disposed in the water tank. The refrigerant flow path is connected to the condenser. The first turbine is disposed on the refrigerant flow path between the first filter and the condenser.

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