Detachable combined air source heat pump water heater

Abstract

The utility model discloses a detachable combined air source heat pump water heater, and belongs to the technical field of water heaters. A heat exchange water tank and a heat pump main machine of the water heater are integrated or split, and the heat exchange water tank is communicated with the heat pump main machine through a fluorine path connecting pipe. The heat exchange water tank comprises a tank body, a first water tank and a second water tank, the first water tank and the second water tank are vertically arranged in the tank body side by side, a first inner container is arranged in the first water tank, a second inner container is arranged in the second water tank, and the condensation heat exchanger is evenly wound around the periphery of the first inner container and the periphery of the second inner container and fixed to the first inner container and the second inner container through a plurality of fixing blocks. The water tank adopts the design that double containers are independently foamed and then assembled, modular rapid production is realized by using the same inner containers, the double inner containers are respectively provided with a micro-channel condensation heat exchanger, different heat exchange schemes of the double inner containers can be fully utilized to heat according to needs when water temperature layering is caused by actual water use of a customer, and the double inner containers can be heated according to different heat exchange schemes under the condition that the double inner containers are the same in capacity. The installation size can be smaller, and the hot water utilization rate is higher than that of a single container.

Description

A detachable and combinable air source heat pump water heater Technical Field

[0001] This utility model relates to the field of water heater technology, specifically a detachable and combinable air source heat pump water heater. Background Technology

[0002] Traditional heat pump water heaters typically use a single-tank structure for their storage tanks. To meet capacity requirements, the diameter of the single tank needs to be increased, resulting in a bulky overall size, often ≥500mm. This makes them unsuitable for narrow spaces such as balconies and utility rooms, leading to low installation compatibility. The single-tank structure also results in significant mixing of hot and cold water during intake, with an actual hot water output rate of only about 78%. Furthermore, the impact of cold water causes large temperature fluctuations, leading to a poor user experience. Different capacity tanks require independent molds, resulting in significant mold investment and high costs associated with replacement during repairs. Traditional tanks cannot be flexibly installed separately from the main unit; the integrated design causes vibrations from the main unit to be transmitted to the tank, generating noise pollution. While existing technologies have attempted dual-tank designs, they often employ a single-layer foaming process, making inner tank repairs difficult. Fixed interface layouts, such as inlet and outlet ports limited to one side, prevent flexibility in adapting to different installation scenarios. Finally, the lack of on-demand heating strategies for temperature-sensitive water means there is still room for improvement in energy efficiency.

[0003] Meanwhile, traditional air source heat pump water heaters typically employ fixed integrated or split designs, requiring users to pre-determine the installation method at the time of purchase. However, due to the complexity of actual installation scenarios, such as building layout limitations, changes in user needs, or subsequent adjustments to equipment location, traditional structures are often difficult to adapt, leading to increased return and exchange rates and wasted transportation, installation, and commissioning costs.

[0004] To address the aforementioned issues, there is an urgent need for a heat pump water heater that combines spatial adaptability, high energy efficiency, and a modular water tank structure. Summary of the Invention

[0005] The purpose of this invention is to provide a detachable and combinable air source heat pump water heater to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A detachable and combinable air source heat pump water heater includes a hot water exchange tank and a heat pump unit. The hot water exchange tank and the heat pump unit are either integrated or separate. The hot water exchange tank is connected to the heat pump unit via a refrigerant connection pipe. The hot water exchange tank includes a tank body, a first water tank, and a second water tank. The first and second water tanks are placed side by side vertically inside the tank body. The first water tank contains a first inner tank, and the second water tank contains a second inner tank. The outer walls of the first and second water tanks have inlets and outlets adapted to the first and second inner tanks. The outlet of the first water tank is connected to the inlet of the second water tank via a water tank connecting pipe. A condensing heat exchanger is evenly wound around the outer periphery of the first and second inner tanks and fixed to the first and second inner tanks by several fixing blocks.

[0008] As a preferred technical solution of this utility model, a thermally conductive silicone grease layer is applied to the position where the condenser heat exchanger contacts the first / second inner liner.

[0009] As a preferred embodiment of this utility model, a first temperature sensor is provided at the upper part of both the first inner tank and the second inner tank for checking the upper temperature of the first / second water tank during the heating process; a second temperature sensor is also provided at the lower part of the first inner tank for checking the lower temperature of the first water tank during the heating process.

[0010] As a preferred embodiment of this utility model, both the first inner liner and the second inner liner are provided with electric heating ports in the middle for emergency heating in case of heat pump system failure or temporary large-scale water use.

[0011] As a preferred embodiment of this utility model, the tank body has a water tank cavity for accommodating a first water tank and a second water tank. The water tank cavity is enclosed by a lower base, a left side plate, a right side plate, a right upright plate, and a front panel. An inner tank fixing bracket and a water tank top cover are sequentially installed on the top of the water tank cavity. A space is reserved between the right upright plate and the right side plate for inserting a water tank rainproof plate. The outer wall of the second water tank also has a fluoride inlet, a fluoride outlet, and a drain outlet. The water outlet, fluoride inlet, fluoride outlet, and drain outlet on the outer wall of the second water tank are sequentially arranged in the same vertical direction. The water tank rainproof plate covers the water outlet, fluoride inlet, fluoride outlet, and drain outlet arranged in the vertical direction. A water tank handle is also provided on the water tank rainproof plate.

[0012] Furthermore, the water inlet on the first water tank is located at the bottom near the inner cavity of the water tank for connecting to a tap water pipe; the first water tank is also provided with a pressure relief port connected to a pressure relief valve, the pressure relief port is located at the upper part of the first water tank and directly above the water inlet, the left side plate is provided with through holes for the pressure relief valve and the tap water pipe to pass through, and the left side plate is also provided with a water tank handle.

[0013] As a preferred embodiment of this utility model, when the hot water exchange tank and the heat pump unit are integrated, the heat pump unit is fixed on the top of the hot water exchange tank, and the hot water exchange tank is connected to the heat pump unit through a refrigerant connection pipe.

[0014] As a preferred embodiment of this utility model, when the hot water exchange tank and the heat pump unit are separate units, the heat pump unit is installed at the outdoor air conditioning location, the hot water exchange tank is installed indoors, and the hot water exchange tank is connected to the heat pump unit through a refrigerant connection pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The water heater structure of this utility model supports integrated installation of the hot water tank and the heat pump unit, which can be combined vertically or installed separately indoors and outdoors. Users can freely switch modes according to the limitations of building space.

[0017] 2. This utility model features a dual-tank water tank structure with two inner tanks arranged side-by-side vertically. This design reduces the thickness by more than 30% for the same capacity, making it suitable for narrow spaces such as living balconies and equipment rooms. The same inner tank specifications allow for multiple capacity combinations, saving on mold investment. Simultaneously, the dual tanks are connected in series with independent microchannel condensing heat exchangers, reducing cold water impact, increasing hot water output, and significantly enhancing water temperature stability. Dual temperature sensors (upper and lower) dynamically monitor water temperature stratification on both inner tanks, controlling the two condensing heat exchangers to start and stop as needed, avoiding the energy waste associated with heating a single tank.

[0018] 3. This utility model adds an emergency electric heating port design to ensure continuous power supply during heat pump failure or peak water usage; at the same time, the water tank has a symmetrical interface layout to support blind installation and interchangeability to adapt to different pipeline routes; the hidden rainproof plate integrates refrigerant interface protection and handle function, taking into account both outdoor protection and installation convenience. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the integrated structure of the detachable and combinable air source heat pump water heater of this utility model;

[0020] Figure 2 is a schematic diagram of the split structure of the detachable and combinable air source heat pump water heater of this utility model.

[0021] Figure 3 is a schematic diagram of the hot water exchange tank in the detachable and combinable air source heat pump water heater of this utility model.

[0022] Figure 4 is an exploded view of the hot water exchange tank in the detachable and combinable air source heat pump water heater of this utility model.

[0023] Figure 5 is a schematic diagram of the structure of the inner tank of the hot water exchange tank in the detachable and combinable air source heat pump water heater of this utility model.

[0024] In the diagram: 1-Heat pump main unit, 2-Hot water tank, 20-Water inlet, 21-Tank body, 210-Lower chassis, 211-Front panel, 212-Left side panel, 213-Right side panel, 214-Right upright panel, 215-Water tank top cover, 216-Inner tank fixing bracket, 217-Water tank rainproof plate, 22-Dual tank, 221-First water tank, 2210-First inner tank, 222-Second water tank, 2220-Second inner tank, 23-Water tank handle, 24-Pressure relief port, 25-Water outlet, 26-Fluorine inlet, 27-Fluorine outlet, 28-Drain outlet, 3-First temperature sensor, 4-Condensing heat exchanger, 5-Electric heating port, 6-Second temperature sensor, 7-Fixing block, 8-Connecting water pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please refer to Figures 1-5. In this embodiment of the present invention, a detachable and combinable air source heat pump water heater includes a hot water exchange tank 2 and a heat pump main unit 1. The hot water exchange tank 2 and the heat pump main unit 1 are either integrated or separate. The hot water exchange tank 2 is connected to the heat pump main unit 1 via a refrigerant connection pipe. The hot water exchange tank 2 includes a tank body 21 and a dual-tank water tank 22. The dual-tank water tank 22 includes a first water tank 221 and a second water tank 222. The first water tank 221 and the second water tank 222 are placed side by side vertically. Inside the main body 21, the first water tank 221 is provided with a first inner liner 2210, and the second water tank 222 is provided with a second inner liner 2220. The outer walls of the first / second water tanks are provided with inlets 20 and outlets 25 that are adapted to the first / second inner liners. The outlet 25 of the first water tank 221 is connected to the inlet 20 of the second water tank 222 through a water tank connecting pipe 8. The outer periphery of the first / second inner liners is uniformly wrapped with a condensing heat exchanger 4 and fixed to the first / second inner liners by a number of fixing blocks 7.

[0027] In this embodiment, the water tank adopts a design of separate foaming and assembly of two tanks. It can use the same small inner tank to achieve modular and rapid production. Each inner tank has a microchannel condensing heat exchanger 4. When the customer's actual water use causes water temperature stratification, the different heat exchange schemes of the two inner tanks can be fully utilized to heat the inner tanks as needed. Furthermore, when the nominal capacity of the two tanks is the same, the installation size is smaller, and the hot water utilization rate is more than 10% higher than that of a single tank.

[0028] In a preferred embodiment of this invention, a thermally conductive silicone grease layer is applied to the contact area between the condensing heat exchanger and the first inner liner 2210, and a thermally conductive silicone grease layer is also applied to the contact area between the condensing heat exchanger and the second inner liner 2220. The thermally conductive silicone grease layer acts as a thermal conductive agent, used to reduce the contact thermal resistance between the condensing heat exchanger 4 and the inner liner, and to compensate for vibration deformation.

[0029] In a preferred embodiment of this invention, a first temperature sensor 3 is provided at the upper part of both the first inner tank 2210 and the second inner tank 2220 to check the upper temperature of the first / second water tank during the heating process; a second temperature sensor 6 is also provided at the lower part of the first inner tank 2210 to check the lower temperature of the first water tank 221 during the heating process. By dynamically monitoring water temperature stratification through dual temperature sensors (upper and lower sensors), the two sets of condensing heat exchangers 4 can be controlled to start and stop as needed, avoiding energy waste from heating the entire single-tank structure.

[0030] More preferably, referring to FIG5, both the first inner tank 2210 and the second inner tank 2220 are provided with electric heating ports 5 in the middle, which are used for emergency heating when the heat pump system fails or when a large amount of water is used temporarily.

[0031] In a preferred embodiment of this invention, referring to FIG4, the tank body 21 has a water tank cavity for housing the first water tank 221 and the second water tank 222. The water tank cavity is formed by a lower base plate 210, a left side plate 212, a right side plate 213, a right upright plate 214, and a front panel 211. An inner liner fixing bracket 216 and a water tank top cover 215 are sequentially installed on the top of the water tank cavity. A water tank rainproof plate is pre-installed between the right upright plate 214 and the right side plate 213. In the space of 217, the outer wall of the second water tank 222 is also provided with a fluoride inlet 26, a fluoride outlet 27 and a drain outlet 28. The water outlet 25, fluoride inlet 26, fluoride outlet 27 and drain outlet 28 on the outer wall of the second water tank 222 are arranged in the same vertical direction. The water tank rainproof plate 217 covers the water outlet 25, fluoride inlet 26, fluoride outlet 27 and drain outlet 28 arranged in the vertical direction. The water tank rainproof plate 217 is also provided with a water tank handle 23.

[0032] Further, referring to Figure 2, the inlet 20 on the first water tank 221 is located near the bottom of the inner cavity of the water tank and is used to connect to the tap water pipe; the first water tank 221 is also provided with a pressure relief port 24 connected to the pressure relief valve. The pressure relief port 24 is located on the upper part of the first water tank 221 and is located directly above the inlet 20. The left side plate 212 is provided with through holes for the pressure relief valve and the tap water pipe to pass through. The left side plate 212 is also provided with a water tank handle 23.

[0033] In the first embodiment of this example, referring to FIG1, when the hot water tank 2 and the heat pump host 1 are integrated, the heat pump host 1 is fixed on the top of the hot water tank 2, and the hot water tank 2 is connected to the heat pump host 1 through a refrigerant connection pipe.

[0034] In the second embodiment of this example, referring to FIG2, when the hot water exchange tank 2 and the heat pump host 1 are separate units, the heat pump host 1 is installed at the outdoor air conditioning position, the hot water exchange tank 2 is installed indoors, and the hot water exchange tank 2 is connected to the heat pump host 1 through a refrigerant connection pipe.

[0035] In practical use, the heat exchange hot water tank in this detachable and combinable air source heat pump water heater adopts a dual-tank structure design (22), which can be used with the main unit for both integrated top and bottom installation and separate indoor and outdoor installation. The inlet (20), pressure relief port (24), drain (28), and outlet (25) on the left and right sides of the tank are symmetrically designed, allowing for left-right interchange for different user scenarios. Regarding the number of inner tanks, two identical inner tanks are spliced ​​together, resulting in a thinner design for the same capacity. The modular design of each identical inner tank saves on excessive mold investment. Compared to a single inner tank design, the dual-tank series configuration reduces cold water impact for the same capacity, thereby improving hot water efficiency.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A detachable and combinable air source heat pump water heater, comprising a hot water exchange tank and a heat pump unit, characterized in that: The hot water exchange tank and the heat pump unit are either integrated or separate. The hot water exchange tank is connected to the heat pump unit via a refrigerant connection pipe. The hot water exchange tank includes a tank body, a first water tank, and a second water tank. The first and second water tanks are placed side by side vertically inside the tank body. The first water tank contains a first inner liner, and the second water tank contains a second inner liner. The outer walls of the first / second water tanks have inlet and outlet ports that are compatible with the first / second inner liner. The outlet port of the first water tank is connected to the inlet port of the second water tank via a water tank connecting pipe. A condensing heat exchanger is evenly wound around the outer periphery of the first / second inner liner and fixed to the first / second inner liner by several fixing blocks.

2. The split combination air source heat pump water heater of claim 1, wherein: A layer of thermally conductive silicone grease is applied to the position where the condenser heat exchanger contacts the first / second inner liner.

3. The detachable and combinable air source heat pump water heater according to claim 1, characterized in that: A first temperature sensor is provided at the upper part of both the first and second inner tanks to check the upper temperature of the first / second water tank during the heating process; a second temperature sensor is also provided at the lower part of the first inner tank to check the lower temperature of the first water tank during the heating process.

4. The split combination air source heat pump water heater of claim 1, wherein: Both the first inner liner and the second inner liner are equipped with electric heating ports in the middle.

5. The split combination air source heat pump water heater of claim 1, wherein: The tank body has a water tank cavity for housing the first and second water tanks. The water tank cavity is enclosed by a lower base, a left side plate, a right side plate, a right upright plate, and a front panel. An inner tank fixing bracket and a water tank top cover are installed sequentially on the top of the water tank cavity. A space is reserved between the right upright plate and the right side plate for inserting a water tank rainproof plate. The outer wall of the second water tank also has a fluoride inlet, a fluoride outlet, and a drain outlet. The water outlet, fluoride inlet, fluoride outlet, and drain outlet on the outer wall of the second water tank are arranged sequentially in the same vertical direction. The water tank rainproof plate covers the water outlet, fluoride inlet, fluoride outlet, and drain outlet arranged in the vertical direction. The water tank rainproof plate is also provided with a water tank handle.

6. The split combination air source heat pump water heater of claim 5, wherein: The water inlet on the first water tank is located at the bottom near the inner cavity of the water tank and is used to connect to the tap water pipe; the first water tank is also provided with a pressure relief port connected to the pressure relief valve, the pressure relief port is located at the upper part of the first water tank and directly above the water inlet, the left side plate is provided with through holes for the pressure relief valve and the tap water pipe to pass through, and the left side plate is also provided with a water tank handle.

7. The detachable and combinable air source heat pump water heater according to claim 1, characterized in that: When the hot water exchange tank and the heat pump unit are integrated, the heat pump unit is fixed on the top of the hot water exchange tank, and the hot water exchange tank is connected to the heat pump unit through a refrigerant connection pipe.

8. The detachable and combinable air source heat pump water heater according to claim 1, characterized in that: When the hot water exchange tank and the heat pump unit are separate units, the heat pump unit is installed at the outdoor air conditioning location, and the hot water exchange tank is installed indoors. The hot water exchange tank is connected to the heat pump unit through a refrigerant connection pipe.

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