Integral heat pump water machine with adjustable water pipe connection direction

Abstract

The utility model discloses a whole type heat pump water machine of adjustable water pipe connection direction, including the case and setting in the heat preservation water tank of case, refrigeration equipment, the heat preservation water tank is cylindrical, and the upper end surface middle part sealed insertion has the blind pipe of subsidence, the open end of blind pipe sets up to the upward, still be provided with heat exchange coil in the inside, heat exchange coil is provided with heat exchange import and heat exchange export, heat exchange import and heat exchange export extend outward and are connected with refrigeration equipment, the lateral wall surface of heat preservation water tank is set up with a group of water inlet and water outlet, and the side of case is provided with multiple groups of water inlet position and water outlet position, the utility model discloses can according to the direction of water inlet and water outlet adjustment optimal most beneficial to the direction of engineering installation according to the need of customer field, can reduce the elbow of connecting water pipe, reduce the installation space, is favorable for reducing the difficulty of engineering installation, reduces the installation material cost, reduces water resistance, and the installation engineering of unit is more beautiful.

Description

Technical Field

[0001] This utility model relates to the field of hot and cold water machines, and in particular to an integrated heat pump water machine with adjustable water pipe connection direction in the cooling direction. Background Technology

[0002] A common problem encountered during the installation of hot and cold water chiller units is that the inlet and outlet positions are pre-fixed at the factory, making it difficult to perfectly match the on-site piping requirements during actual installation. This necessitates the use of bends in the water system piping, leading to a series of problems—not only increasing the consumption of water pipe materials and requiring more installation space, but also increasing the flow resistance of the water system due to pipe bends, ultimately resulting in increased pump operating load and correspondingly higher long-term operating costs.

[0003] From a product design perspective, most hot and cold water unit manufacturers currently use fixed structural designs, with few models offering flexible adjustments to the inlet and outlet positions. While some medium and large-sized units can have their interface positions customized in advance according to customer needs, the majority of small and medium-sized units on the market are standardized products with fixed interface positions at the factory, making adjustments impossible during on-site installation. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this utility model aims to provide an integrated heat pump water heater with adjustable water pipe connection direction. By rotating and adjusting the installation angle of the insulated water tank inside the water heater on the whole machine, the positions of the inlet and outlet can be adjusted. The specific solution is as follows:

[0005] An integrated heat pump water heater with adjustable water pipe connection direction includes a chassis and an insulated water tank and a refrigeration unit housed within the chassis. The insulated water tank is cylindrical, with a sunken blind pipe sealed and inserted into the center of its upper end face. The open end of the blind pipe faces upward, and a heat exchange coil is installed inside. The heat exchange coil has a heat exchange inlet and a heat exchange outlet. The heat exchange inlet and outlet extend outward from the open end of the blind pipe and connect to the refrigeration unit. A set of inlet and outlet ports are provided on the side wall of the insulated water tank, and multiple sets of inlet and outlet ports are provided on the side of the chassis, so that after the insulated water tank rotates, its inlet and outlet ports can be aligned with any set on the side of the chassis.

[0006] Preferably, the blind tube is filled with a heat-conducting medium, and the open end of the blind tube is provided with a sealing plug to prevent leakage of the heat-conducting medium; the heat exchange inlet and heat exchange outlet pass through the sealing plug and are connected to the refrigeration equipment.

[0007] Preferably, the blind pipe is cylindrical and coaxially arranged with the insulated water tank.

[0008] Preferably, the inlet and outlet positions that are not opposite to the inlet and outlet are detachably sealed by a cap.

[0009] Preferably, the coil is a single-layer coil or a double-layer coil.

[0010] Preferably, the closed end of the blind tube is recessed inward to bring it close to the open end, and an inverted blind groove is formed inside the blind tube, thereby forming an inner and outer double-layer tube wall; an annular interlayer space is formed between the inner and outer double-layer tube walls, and the coil is housed in the interlayer space.

[0011] Preferably, the refrigeration equipment includes a compressor, a condenser, a throttling device, and a control system; the compressor, condenser, throttling device, and heat exchange coil are connected in sequence via refrigerant pipes and are respectively electrically controlled by the control system.

[0012] Preferably, an air outlet grille and an air inlet grille are arranged opposite each other on the casing of the chassis; a fan assembly is also provided inside the chassis, and the condenser and the fan assembly are arranged between the air outlet grille and the air inlet grille.

[0013] Preferably, the fan assembly includes a fan, a motor, and a motor bracket.

[0014] Preferably, the refrigeration equipment further includes an electromagnetic four-way valve.

[0015] The working principle and beneficial effects of this utility model are as follows:

[0016] This utility model adopts a cylindrical coaxial blind tube structure for the insulated water tank, which can rotate the insulated water tank while ensuring that the position of the heat exchange coil does not change, thereby changing the position and direction of the water inlet and outlet on the side of the water tank; multiple sets of water inlets and outlets are pre-set on the casing to correspond to the water inlets and outlets required for different rotation angles of the water tank; before the product leaves the factory, the water inlet and outlet of the insulated water tank correspond to one set of water inlets and outlets on the casing, and the other water inlets and outlets on the casing are sealed with removable caps.

[0017] During on-site installation, if it is necessary to adjust the position and direction of the inlet and outlet, remove the caps on the inlet and outlet of the unit casing at the corresponding positions, rotate and adjust the angle of the insulated water tank so that the inlet and outlet of the insulated water tank are aligned with the inlet and outlet of the unit casing, and then install the caps on the remaining inlet and outlet of the unit casing to complete the adjustment.

[0018] This utility model can be adjusted to the optimal direction of the inlet and outlet according to the customer's site requirements. The inlet and outlet pipes are adjusted to the direction most conducive to the project installation, which can reduce the number of bends in the water pipes, reduce the installation space, reduce the difficulty of project installation, reduce the cost of installation materials, reduce water resistance, and make the installation of the unit more aesthetically pleasing. Attached Figure Description

[0019] Figure 1 This is a front view of Embodiment 1 of the present utility model;

[0020] Figure 2 This is a rear view of Embodiment 1 of the present invention (view after removing the rear panel of the housing).

[0021] Figure 3 This is a schematic diagram of the connection of the water inlet pipe in different installation positions according to Embodiment 1 of this utility model.

[0022] Figure 4 This is a cross-sectional view of the insulated water tank of Embodiment 1 of this utility model;

[0023] Figure 5 This is a cross-sectional view of the insulated water tank of Embodiment 2 of this utility model;

[0024] Figure 6 This is a cross-sectional view of the blind tube in Embodiment 2 of this utility model.

[0025] Figure label:

[0026] Example 1: 1-Chassis, 2-Insulated water tank, 3-Exhaust grille, 4-Control system, 5-Compressor, 6-Condenser, 7-Throttling device, 8-Refrigerant pipe, 10-Chassis, 11-Front panel, 12-Rear panel, 13-Left side panel, 14-Right side panel, 15-Inlet, 16-Outlet, 17-Cap, 20-Sealing plug, 21-Outer shell, 22-Insulation layer, 23-Inner liner 24-Temperature-sensing blind pipe, 25-Bottom drain outlet, 26-Water inlet, 27-Water outlet, 28-Blind pipe, 29-Heat exchange coil, 91-Fan, 92-Motor, 93-Motor bracket, 291-Heat exchange inlet, 292-Heat exchange outlet, a-Room, b-Room, c-Room, A-House water inlet pipe, B-House water inlet pipe, C-Water pipe, D-Water pipe, E-Integrated heat pump, F-Integrated heat pump;

[0027] Example 2: 2'-Insulated water tank, 27'-Outlet, 28'-Blind pipe, 29'-Coil, 281'-Open end, 282'-Closed end, 283'-Annular interlayer space, 284'-Blind hole groove, 291'-Heat exchange inlet, 292'-Heat exchange outlet, 293'-Outer coil, 294'-Inner coil. Detailed Implementation

[0028] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Example 1:

[0032] like Figures 1-4 As shown, the integrated heat pump water heater includes various structural components of the chassis (such as sheet metal parts made of metal, usually including chassis 1 consisting of chassis 10, front panel 11, rear panel 12, left side panel 13, right side panel 14 and top cover, etc., as well as mounting brackets set in chassis 1, etc.), refrigeration system, fan assembly and pressurized insulated water tank 2, etc.

[0033] The integrated heat pump water heater has an air outlet grille 3 on its front panel and an air inlet grille (conventional design, not shown in this embodiment) on its rear panel 12, which corresponds to the air outlet grille 3.

[0034] The insulated water tank 2 is located on one side of the integrated heat pump water machine casing 1, while the other side is mainly equipped with refrigeration equipment, fan assembly and control system. The fan assembly and refrigeration equipment are arranged in front and behind and side by side with the insulated water tank 2.

[0035] like Figure 4As shown, the cylindrical insulated water tank is typically composed of an outer shell 21, an insulation layer 22, and an inner liner 23. A set of inlet 26 and outlet 27 are provided on its side wall. The positions of the inlet 26 and outlet 27 and the direction of water inflow and outflow can be interchanged. The insulated water tank 2 is generally equipped with a bottom drain outlet 25 and a temperature-sensing blind pipe 24 on the side. The novel pressure-bearing insulated water tank 2 used in this embodiment also has a blind pipe 28 for installing heat exchange coils. Specifically, a sunken cylindrical blind pipe 28 is coaxially arranged at the top center of the insulated water tank 2 with the cylindrical insulated water tank, forming a sealed integral structure. The interior of the blind pipe 28 is connected to the exterior of the insulated water tank 2 through the open end at the top of the blind pipe 28. The interior of the sunken blind pipe 28 can accommodate the heat exchange coil 29 and the heat transfer medium (such as heat transfer oil or heat transfer silicone grease, not shown in the figure). The open end (pipe port) at the top of the blind pipe 28 is sealed by a sealing plug 20 to prevent leakage of the heat transfer medium. The heat exchange inlet and outlet of the heat exchange coil 29 pass vertically upward through the pipe port after passing through the plug 20 and are connected to the refrigeration equipment to form a complete refrigeration system. The heat exchange inlet and outlet are used for the entry and exit of the cooling or heating medium. When the medium is different, the flow direction of the medium in the heat exchange inlet and the heat exchange outlet is different, and the names will also be interchanged accordingly.

[0036] Furthermore, existing insulated water tanks typically employ two technical solutions when installing heat exchange coils: one is to directly submerge the metal coils inside the insulated water tank, and the other is to wrap them around the outer wall of the inner liner. Both solutions have drawbacks: 1) When the coil structure is built-in and exchanges heat with the water, scaling is easily formed due to water quality and other factors during long-term use. This significantly reduces heat exchange efficiency, accelerates the corrosion rate of the inner coil, and if the inner coil leaks, water seeps into the refrigeration system, causing refrigeration system failure and making repairs difficult and costly; 2) The polyurethane foam material (insulation layer) used in the insulated water tank is prone to hydrolysis under long-term contact with water vapor, leading to a decrease in insulation performance or even failure. In particular, when a pressurized insulated water tank with external coils is used for refrigeration, water vapor easily condenses on the surface of the coils under low evaporation temperature conditions, and the condensate can easily penetrate the polyurethane foam layer (insulation layer). To address the shortcomings of existing technologies, this invention features a recessed blind pipe inside the inner tank to isolate water from the coils, resulting in significant improvements in heat transfer efficiency, system stability, and user experience compared to traditional water tanks.

[0037] The outer side of the insulated water tank 2 is close to the front panel 11, the rear panel 12 and the right side panel 14. A sealing element is provided between the outer side of the insulated water tank 2 and the front panel 11 and the rear panel 12 to prevent air leakage. The inlet 26 and the outlet 27 of the insulated water tank 2 are directly opposite the inlet position 15 and the outlet position 16 reserved on the right side panel 14. The rear panel 12 also has another set of inlet and outlet positions reserved and a cover 17 is installed on it. And / or the left side panel also has the same reserved inlet and outlet and cover.

[0038] The refrigeration equipment includes a control system 4, and a compressor 5, a condenser 6, and a throttling device 7 (electronic expansion valve) that are electrically controlled by the control system 4. The compressor 5, condenser 6, throttling device 7 (electronic expansion valve), and heat exchange coil 29 are connected in sequence by refrigerant pipes 8 of various specifications and shapes. The heat exchange coil 29 is built inside a blind pipe 28 at the center of the top of the pressure-bearing insulated water tank. The blind pipe 28 is also filled with a heat-conducting medium. The function of the heat-conducting medium is to fully exchange energy with the heat exchange coil 29, and then exchange this energy to the fluid inside the insulated water tank 2 through the wall of the blind pipe 28.

[0039] The condenser 6 is disposed between the fan assembly and the compressor 5. A seal is provided between one side of the condenser 6 and the insulated water tank 2 to prevent air leakage. A seal is provided between the other side of the condenser 6 and the casing 1 of the integrated heat pump water machine (usually a sheet metal part, such as the left side panel) to prevent air leakage. The fan assembly includes a fan 91, a motor 92 and a motor bracket 93. When the fan assembly is working, air enters through the air inlet grille of the rear panel 12 and flows through the condenser 6 under negative pressure, carrying away the energy of the condenser 6. The fan drives the air to flow out from the air outlet grille 3 of the front panel 11.

[0040] The control system 4 (electric control box) is located in the top space of the refrigeration system and / or fan assembly. The control system 4 is provided with several reserved holes. Various high-voltage and low-voltage connection lines are connected to the respective components through the reserved holes. External power lines and / or control lines are connected through the connection devices reserved on the integrated heat pump water machine casing 1.

[0041] Cooling mode: The high-temperature and high-pressure refrigerant gas discharged from the compressor 5 releases heat in the condenser 6 to form a medium-temperature and high-pressure refrigerant liquid. It is then throttled and depressurized by the throttling device 7 to form a low-temperature and low-pressure refrigerant liquid. It enters the heat exchange coil 29 set in the blind pipe 28 of the insulated water tank, releases cold energy and evaporates into a low-temperature and low-pressure refrigerant gas, and then returns to the suction port of the compressor 5 to form a complete refrigeration cycle.

[0042] Heating mode: The high-temperature and high-pressure refrigerant gas discharged from the compressor 5 releases heat in the heat exchange coil 29 set in the blind pipe of the insulated water tank to form a medium-temperature and high-pressure refrigerant liquid. It is throttled and depressurized by the throttling device 7 to form a low-temperature and low-pressure refrigerant liquid. It enters the condenser 6 to absorb heat and evaporate into a low-temperature and low-pressure refrigerant gas. Then it returns to the suction port of the compressor 5 to form a complete heating cycle.

[0043] When a refrigeration system is designed as a heat pump unit by adding an electromagnetic four-way heat exchange valve, it has both cooling and heating modes: when the water temperature in insulated water tank 2 is too low, the heating mode can be used to raise the temperature of the fluid in insulated water tank 2; when the water temperature in insulated water tank 2 is too high, the cooling mode can be used to lower the temperature of the fluid in insulated water tank 2 to meet the user's needs. The connection method and working principle of the electromagnetic four-way valve are standard in refrigeration system design and control, and will not be elaborated further here.

[0044] like Figure 3 As shown, assuming the inlet 15 and outlet 16 of the integrated heat pump water heater are defaulted to the right side panel 14 of the chassis, the orientation of the inlet and outlet positions may need to be adjusted during on-site installation due to different installation environments. For example, if the integrated heat pump E requires a water pipe to enter room a, then the inlet and outlet positions on the rear panel 12 of the chassis are the most convenient for connecting to the incoming water pipe A. Using water pipe C to connect to the default inlet 15 and outlet 16 on the right side panel 14 will form a bend, and water pipe C will easily be exposed outside the unit. The installation scheme of water pipe C is prone to the problems described in the background art. When the integrated heat pump F is like... Figure 3 When the installation is required to enter room b, the water pipe can be directly connected to the inlet pipe B using the default inlet position 15 and outlet position 16 on the right side panel 14 of the unit. Alternatively, the connection scheme of water pipe D can be used to install the inlet pipe as close to the wall as possible.

[0045] In summary, when users require inlet and outlet water outlets to be routed in different directions, before installing the integrated heat pump water heater, first open the top cover and panel, remove the fixing bolts of the insulated water tank 2, and remove the sealing plug 20. Then, by rotating and adjusting the installation angle of the insulated water tank 2 on the whole unit, the position and direction of the inlet 26 and outlet 27 can be adjusted. The sunken blind pipe 28 in the central part rotates with the rotation of the insulated water tank 2, but the heat exchange coil 29 inside the blind pipe 28 will not rotate with the insulated water tank 2 and the blind pipe 28, thus ensuring that the position of the heat exchange inlet and outlet pipes will not change, and thus will not change the structural setting of the refrigeration equipment. After the position of the insulated water tank 2 is adjusted, reinstall all fixing bolts to ensure the fixation and sealing of the insulated water tank 2. Finally, reinstall the sealing plug 20 back to the open end of the top of the blind pipe 28. After reassembling the various panels and top cover of the integrated heat pump water heater casing 1, the engineering installation can be carried out according to the inlet and outlet directions required by the user.

[0046] Example 2:

[0047] like Figure 5-6As shown, this embodiment discloses an insulated water tank 2' with a different structure based on Embodiment 1. This embodiment makes technical improvements to the blind tube and heat exchange coil to enhance heat exchange efficiency. The specific solution is as follows:

[0048] In this embodiment, the blind tube 28' is based on a conventional cylindrical blind tube 28, with the closed end 282' recessed inward to bring it closer to the open end 281, and an inverted blind groove 284' formed inside the blind tube 28, thus forming a double-layered tube wall. An annular interlayer space 283' is formed between the inner and outer double-layered tube walls, and the coil 29' is housed in the interlayer space 283'. Furthermore, in this embodiment, the coil 29' is a double-layered coil, including an inner coil 294' and an outer coil 293', and the two coils share a heat exchange inlet 291' and a heat exchange outlet 292'. The inner side of the inner coil 294' is tightly attached to the inner wall of the blind tube 29'; the outer side of the outer coil 293' is tightly attached to the outer wall of the blind tube. This embodiment improves heat exchange efficiency by increasing the contact area between the blind tube 29' and the water in the insulated water tank 2' and by increasing the length of the heat exchange coil 29'. In this embodiment, the insulated water tank also extends the length of the outlet 27' to extend into the blind groove 284', reducing the stagnant water area inside the tank and ensuring sufficient fluid flow inside. Of course, in some embodiments with slightly lower heat exchange efficiency than this embodiment, the cylindrical blind tube or single-layer heat exchange coil of Embodiment 1 can also be used.

Claims

1. An integrated heat pump water heater with adjustable water pipe connection direction, comprising a casing and an insulated water tank and refrigeration equipment disposed within the casing; characterized in that, The insulated water tank is cylindrical, with a sunken blind pipe sealed and inserted in the middle of its upper end face; the open end of the blind pipe faces upward, and a heat exchange coil is installed inside; the heat exchange coil is provided with a heat exchange inlet and a heat exchange outlet; the heat exchange inlet and heat exchange outlet extend outward from the open end of the blind pipe and are connected to the refrigeration equipment; a set of water inlets and outlets are opened on the side wall of the insulated water tank, and multiple sets of water inlet and outlet positions are provided on the side of the casing, so that after the insulated water tank rotates, its water inlets and outlets can be opposite any set on the side of the casing.

2. The integrated heat pump water heater with adjustable water pipe connection direction according to claim 1, characterized in that, The blind tube is filled with a heat-conducting medium, and the open end of the blind tube is provided with a sealing plug to prevent leakage of the heat-conducting medium; the heat exchange inlet and heat exchange outlet pass through the sealing plug and are connected to the refrigeration equipment.

3. The integrated heat pump water heater with adjustable water pipe connection direction according to claim 1, characterized in that, The blind pipe is cylindrical and is coaxially arranged with the insulated water tank.

4. The integrated heat pump water heater with adjustable water pipe connection direction according to claim 1, characterized in that, The inlet and outlet positions that are not opposite to the inlet and outlet can be detachably sealed by a cap.

5. The integrated heat pump water heater with adjustable water pipe connection direction according to claim 1, characterized in that, The coil can be a single-layer coil or a double-layer coil.

6. The integrated heat pump water heater with adjustable water pipe connection direction according to claim 5, characterized in that, The closed end of the blind tube is recessed inward to bring it close to the open end, and an inverted blind hole groove is formed inside the blind tube, thereby forming an inner and outer double-layer tube wall; an annular interlayer space is formed between the inner and outer double-layer tube walls, and the coil is housed in the interlayer space.

7. The integrated heat pump water heater with adjustable water pipe connection direction according to claim 1, characterized in that, The refrigeration equipment includes a compressor, a condenser, a throttling device, and a control system; the compressor, condenser, throttling device, and heat exchange coil are connected in sequence via refrigerant pipes and are respectively electrically controlled by the control system.

8. An integrated heat pump water heater with adjustable water pipe connection direction according to claim 7, characterized in that, The chassis has an exhaust grille and an inlet grille arranged opposite each other on its body; a fan assembly is also installed inside the chassis, and the condenser and the fan assembly are located between the exhaust grille and the inlet grille.

9. An integrated heat pump water heater with adjustable water pipe connection direction according to claim 8, characterized in that, The fan assembly includes a fan, a motor, and a motor bracket.

10. An integrated heat pump water heater with adjustable water pipe connection direction according to claim 1, characterized in that, The refrigeration equipment also includes an electromagnetic four-way valve.

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