Air source heat pump evaporator capable of delaying frosting

Abstract

The utility model discloses an air source heat pump evaporator capable of delaying frosting, which comprises a heat exchange evaporator, a defrosting mechanism is assembled outside the heat exchange evaporator, a plurality of exhaust ports are arranged outside the defrosting mechanism, and air outlets of the exhaust ports correspond to gaps of radiating fins of the heat exchange evaporator. When the air source heat pump evaporator is used, air or other efficient vapor condensation prevention gas passes through the corrugated pipe and then is exhausted through the exhaust ports in one-to-one correspondence with the gaps of the cooling fins through an external air source, finally, vapor condensation water drops outside the cooling fins are eliminated, and the frosting delaying effect of the air source heat pump evaporator is achieved to the maximum extent. The air source heat pump evaporator effectively solves the problems that when an existing air source heat pump evaporator adopts a large single-shaft fan to improve heat exchange between air and the evaporator, the flow speeds of wind power partitions are different, the local wind speed is insufficient, and consequently water drops condensed outside cooling fins and a circulation pipeline cannot be removed in time, and frosting is prone to occurring.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump evaporators, in particular to an air source heat pump evaporator capable of delaying frosting. Background Art

[0002] Heat pump evaporator: The evaporator is a heat exchanger in the air source heat pump system. Its function is to absorb low-temperature heat energy from the outside air. When working, the low-temperature refrigerant passes through the evaporator and exchanges heat with the outside air, so that the refrigerant evaporates and absorbs heat. This process makes the outside air cooler and the refrigerant becomes a low-temperature and low-pressure gas. Its principle is the same as that of the air conditioner outdoor unit. It is an auxiliary equipment to increase the contact area between the cooling medium and the air.

[0003] During the use of the existing air source heat pump evaporator, when the external humidity is high or in rainy and snowy weather, the air source heat pump evaporator needs to absorb heat. The temperature of the air source heat pump evaporator is low, so the water vapor in the air is easy to condense on the outer surface of the heat sink to form small droplets. Affected by the liquid tension and dust, the wind speed of the fan that promotes air circulation in conjunction with the air source heat pump evaporator is basically fixed. Based on the maximum wind force of the auxiliary fan, since its air circulation speed has a maximum limit, as long as the adsorption force caused by the liquid tension of the small droplets and the dust is greater than the thrust brought by the air circulation speed, the small droplets will be adsorbed on the outside of the heat sink and cannot be discharged, causing freezing when the temperature continues to drop, that is, frosting. Therefore, the air source heat pump evaporator in the prior art is very easy to frost. In view of the above problems, an air source heat pump evaporator that can delay frosting is specially proposed. Utility Model Content

[0004] The utility model aims to provide an air source heat pump evaporator capable of delaying frosting, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air source heat pump evaporator capable of delaying frosting, comprising a heat exchange evaporator, the outside of which is equipped with a defrosting mechanism, the outside of which is provided with a plurality of exhaust ports, the air outlets of which correspond to the gaps of the heat sink of the heat exchange evaporator;

[0006] The defrosting mechanism comprises a reinforcing rod, a bellows is arranged parallel to the axial direction of the reinforcing rod, and the exhaust port is opened at the outer wall position of the wave crest of the bellows;

[0007] The defrost mechanism can input airflow at the center axis position of the heat sink gap, and the defrost mechanism can run linearly along the center axis position of the heat sink gap, or rotate, or run linearly and rotate at the same time.

[0008] Preferably, the heat exchange evaporator comprises a frame, one end of the frame is equipped with a connecting pipe, one end of the connecting pipe is connected to an external air source heat pump device, the other end of the connecting pipe is equipped with a circulation pipe, and the heat sink is sleeved on the outside of the circulation pipe.

[0009] Preferably, transmission mechanisms are installed on both sides of the frame inside the air inlet end of the heat dissipation auxiliary fan, and the transmission mechanisms include linear transmission mechanisms, or rotary transmission structures, or rotary transmission structures are installed outside the displacement ends of the linear transmission mechanisms.

[0010] Preferably, the outer sleeve of the reinforcement rod is equipped with a positioning piece, and the other side of the positioning piece is integrally formed with a clamping claw, and the clamping claw can be clamped on the outer wall of the trough of the corrugated tube.

[0011] Preferably, connecting parts are fixedly assembled at both ends of the reinforcement rod, and a transmission part is provided on the outer side of the connecting part at a position coincident with the axis of the bellows. The transmission part is transmission-connected to the displacement end of the linear transmission mechanism, or the output end of the rotating transmission structure, or the output end of the rotating transmission structure assembled on the outer side of the displacement end of the linear transmission mechanism.

[0012] Preferably, a rotating joint that can maintain sealing and rotate is installed at the center of the transmission member, the middle fixing member of the rotating joint is installed at the axial position of the transmission member, one end of the outer rotating member of the rotating joint is connected to the bellows, and the other end of the outer rotating member of the rotating joint is connected to an external air supply source.

[0013] Preferably, a butt joint is pressed and formed at the outer end of the bellows, and the butt joint is sealed and fixed to one end of the outer rotating part of the rotating joint.

[0014] Preferably, the crest spacing of the corrugated tube can be adjusted according to the number of gaps of the heat sink and the gap spacing of the heat sink.

[0015] Preferably, the center lines of all the exhaust ports coincide with a virtual straight line, and the virtual straight line is parallel to the axis of the reinforcement rod.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides an air heat pump evaporator with a defrost mechanism. When in use, the defrost mechanism can rotate a bellows of appropriate length according to the size of the heat pump evaporator and the position of a conventional heat sink, and after the spacing of the bellows is adjusted to be consistent through uniform pressing, it corresponds one-to-one with the gap position of the heat sink, and then the air or other high-efficiency gas that prevents water vapor condensation is passed through the bellows through an external air source and discharged through an exhaust port that corresponds one-to-one with the gap of the heat sink, ultimately achieving the elimination of water vapor condensation droplets on the outside of the heat sink, thereby maximizing the effect of delaying frosting of the air source heat pump evaporator, and effectively solving the problem of easy frosting caused by different wind zone flow rates and insufficient local wind speed when the existing air source heat pump evaporator uses a single-axis large fan to improve the heat exchange between the air and the evaporator, resulting in the inability to promptly remove the condensed water droplets on the outside of the heat sink and the circulation pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0018] Figure 2 It is a schematic assembly diagram of the utility model in a three-dimensional perspective.

[0019] Figure 3 It is the front view of the utility model.

[0020] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point a.

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the defrosting mechanism of the utility model.

[0022] Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point b in the middle.

[0023] Figure 7 for Figure 6 The exploded view of the defrost mechanism is enlarged at point b and is labeled b-1.

[0024] In the figure: 1. heat exchange evaporator, 11. frame, 12. connecting pipe, 13. circulation pipe, 14. heat sink, 2. defrost mechanism, 21. reinforcement rod, 22. positioning plate, 23. connecting piece, 24. transmission part, 25. rotating joint, 26. docking joint, 27. bellows, 28. exhaust port. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-7 The utility model provides a technical solution: an air source heat pump evaporator capable of delaying frosting, comprising a heat exchange evaporator 1, a defrosting mechanism 2 is installed outside the heat exchange evaporator 1, a plurality of exhaust ports 28 are arranged outside the defrosting mechanism 2, and the air outlets of the exhaust ports 28 correspond to the gaps of the heat sink 14 of the heat exchange evaporator 1;

[0027] The defrosting mechanism 2 includes a reinforcing rod 21, a bellows 27 is arranged parallel to the axial direction of the reinforcing rod 21, and an exhaust port 28 is opened at the outer wall position of the wave crest of the bellows 27;

[0028] The defrost mechanism 2 can input airflow at the center axis position of the gap of the heat sink 14, and the defrost mechanism 2 can run linearly along the center axis position of the gap of the heat sink 14, or rotate, or run linearly and rotate at the same time.

[0029] The utility model provides an air heat pump evaporator with a defrost mechanism 2. When in use, the defrost mechanism 2 can rotate a bellows 27 of appropriate length according to the size of the heat pump evaporator and the position of a conventional heat sink 14, and after the spacing of the bellows 27 is adjusted to be consistent through uniform pressing, it corresponds to the gap position of the heat sink 14 one by one, and then air or other high-efficiency gas that prevents water vapor condensation is passed through the bellows 27 through an external air source and discharged through an exhaust port 28 that corresponds to the gap of the heat sink 14 one by one, finally achieving the elimination of water vapor condensation droplets on the outside of the heat sink 14, thereby maximizing the effect of delaying frosting of the air source heat pump evaporator, and effectively solving the problem of easy frosting caused by different wind zone flow rates and insufficient local wind speed when the existing air source heat pump evaporator adopts a single-axis large fan to improve the heat exchange between the air and the evaporator, resulting in the failure to timely remove the condensed water droplets on the outside of the heat sink 14 and the circulation pipeline 13.

[0030] Specifically, the heat exchange evaporator 1 includes a frame 11, one end of which is equipped with a connecting pipe 12, one end of which is connected to an external air source heat pump device, and the other end of which is equipped with a circulation pipe 13, and a heat sink 14 is sleeved on the outside of the circulation pipe 13.

[0031] The heat exchange evaporator 1 provided by the present invention is one form of an air source heat pump evaporator. Since the arrangement of the heat sink 14 is a very common prior art, the defrosting mechanism 2 with adjustable spacing has higher adaptability.

[0032] Specifically, a transmission mechanism is installed on both sides of the frame 11, located inside the air inlet end of the heat dissipation auxiliary fan, and the transmission mechanism includes a linear transmission mechanism, or a rotary transmission structure, or a rotary transmission structure is installed outside the displacement end of the linear transmission mechanism;

[0033] The linear transmission mechanism includes a screw transmission mechanism, a linear guide rail and other driving mechanisms that can realize the overall displacement of the defrosting mechanism 2 through the displacement member, and is suitable for use in a limited installation position but with a large distribution gap of the circulation pipeline, and can blow out the condensed water droplets through a single wind direction;

[0034] The rotation transmission structure includes a worm gear drive structure, a gear direct drive structure, and the like, which can drive the defrosting mechanism 2 to rotate around the axis of the bellows 27 by driving the transmission member 24 to rotate. It is suitable for a plurality of installation positions. At the same time, the air flow inside the gap of the heat sink 14 can be delivered to the right position by adjusting the direction of the air outlet. By changing the direction of the air outlet, water droplets in the gaps with complex routes can be blown out by changing the flow direction.

[0035] It is also possible to achieve a unique method of assembling the rotating transmission structure with the displacement end of the linear transmission mechanism to achieve a method that can drive the defrost mechanism 2 and the rotating transmission structure to move linearly as a whole, and can also drive the defrost mechanism 2 to rotate through the rotating transmission structure. This method is suitable for the use of the defrost mechanism 2 with a large area and limited installation space. Combining the above two advantages, it can blow out water droplets better and more effectively.

[0036] Specifically, the outer sleeve of the reinforcement rod 21 is equipped with a positioning piece 22, and the other side of the positioning piece 22 is integrally formed with a clamping claw, which can be clamped on the outer wall of the trough of the corrugated tube 27. The number of clamping claws used needs to be determined according to the length and span of the corrugated tube 27. The main function is to maintain relative stability between the corrugated tube 27 and the reinforcement rod 27, and the positioning piece 22 can be rotatably fixed or slidably installed. In addition to selecting a smaller number of positioning pieces according to the large spacing to meet the stability effect, a positioning piece 22 can also be set on the outer wall of the trough of each corrugated tube 27, and the trough spacing of the corrugated tube 27 can be controlled by fixing the position of the positioning piece 22.

[0037] Specifically, connecting parts 23 are fixedly assembled at both ends of the reinforcement rod 21, and a transmission part 24 is arranged on the outer side of the connecting part 23 at a position coincident with the axis of the bellows 27. The transmission part 24 is transmission-connected to the displacement end of the linear transmission mechanism, or the output end of the rotating transmission structure, or the output end of the rotating transmission structure assembled on the outer side of the displacement end of the linear transmission mechanism. The transmission part 24 can be assembled with the output end of the corresponding driving structure by bolts according to the different transmission modes and the structural shape of the connecting part 23. Due to its uncertainty, its specific driving mode is not redundantly displayed in this application, and it can be assembled or meshed according to the output end openings of various existing driving mechanisms of suitable sizes.

[0038] Specifically, a rotating joint 25 capable of maintaining sealing and rotating is installed at the center of the transmission member 24, a middle fixed member of the rotating joint 25 is installed at the axial center of the transmission member 24, one end of the outer rotating member of the rotating joint 25 is connected to the bellows 27, and the other end of the outer rotating member of the rotating joint 25 is connected to the external air supply source;

[0039] External gas sources include cold and hot air, cold and hot carbon dioxide or other hydrophobic agents and other auxiliary agents that reduce the attachment of water vapor and water droplets. The above gas sources can select appropriate gas delivery pumps or atomization equipment according to their main components and temperature output methods to ensure the input of specific auxiliary raw materials for water droplet condensation;

[0040] Generally, it is preferred to use an air pump with a heater to input hot air as the input gas for the bellows 27, which has low cost and high evaporation efficiency.

[0041] Specifically, the outer end of the bellows 27 is pressed to form a butt joint 26, which is sealed and fixed to one end of the outer rotating part of the rotating joint 25. When the bellows 27 is cut according to the required length, the outer wall at the trough position can be pressed into the butt joint 26 using a copper tube expander.

[0042] The bellows 27 is preferably an aluminum bellows, but may also be a heat-resistant and aging-resistant plastic bellows with a steel ring reinforced inside, or a copper bellows, etc.

[0043] Specifically, the crest spacing of the bellows 27 can be adjusted according to the number of slits of the heat sink 14 and the slit spacing of the heat sink 14 .

[0044] When adjusting the spacing of the bellows 27, a spiral structure with the same pitch as the heat sink 14 can be used to engage with the inner gap of the trough of the bellows 27 to achieve adjustment. Alternatively, a structure similar to a vise that can adjust the spacing gap can be used to determine a fixed spacing, and then each trough socket can be rotated at least one circle to achieve spacing adjustment. When the hardness of the heat sink 14 meets the requirements, the outer wall of the crest of the bellows 27 can also be directly placed into the gap of the heat sink 14 to shape it.

[0045] Specifically, the center lines of all the exhaust ports 28 coincide with a virtual straight line, and the virtual straight line is parallel to the axis of the reinforcement rod 21 .

[0046] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An air source heat pump evaporator capable of delaying frosting, comprising a heat exchange evaporator (1), characterized in that: The heat exchange evaporator (1) is equipped with a defrosting mechanism (2) on the outside, and a plurality of exhaust ports (28) are arranged on the outside of the defrosting mechanism (2), wherein the air outlets of the exhaust ports (28) correspond to the gaps of the heat sink (14) of the heat exchange evaporator (1); The defrosting mechanism (2) comprises a reinforcing rod (21), a bellows (27) is arranged parallel to the axis of the reinforcing rod (21), and the exhaust port (28) is arranged at the outer wall position of the wave crest of the bellows (27); The defrosting mechanism (2) can input airflow at the center axis position of the slit of the heat sink (14), and the defrosting mechanism (2) can run linearly along the center axis position of the slit of the heat sink (14), or can run in rotation, or can run linearly and in rotation at the same time.

2. The air source heat pump evaporator capable of delaying frosting according to claim 1, characterized in that: The heat exchange evaporator (1) comprises a frame (11), one end of the frame (11) is equipped with a connecting pipe (12), one end of the connecting pipe (12) is connected to an external air source heat pump device, the other end of the connecting pipe (12) is equipped with a circulation pipe (13), and the heat sink (14) is sleeved on the outside of the circulation pipe (13).

3. The air source heat pump evaporator capable of delaying frosting according to claim 2, characterized in that: Transmission mechanisms are installed on both sides of the frame (11) at the inner side of the air inlet end of the heat dissipation auxiliary fan, and the transmission mechanisms include a linear transmission mechanism, or a rotary transmission structure, or a rotary transmission structure is installed on the outer side of the displacement end of the linear transmission mechanism.

4. The air source heat pump evaporator capable of delaying frosting according to claim 3, characterized in that: The outer sleeve of the reinforcement rod (21) is equipped with a positioning piece (22), and the other side of the positioning piece (22) is integrally formed with a clamping claw, and the clamping claw can be clamped on the outer wall of the trough of the corrugated tube (27).

5. The air source heat pump evaporator capable of delaying frosting according to claim 4, characterized in that: Connecting members (23) are fixedly mounted at both ends of the reinforcing rod (21); a transmission member (24) is arranged on the outside of the connecting member (23) at a position coincident with the axis of the bellows (27); the transmission member (24) is in transmission connection with a displacement end of a linear transmission mechanism, or an output end of a rotary transmission structure, or an output end of a rotary transmission structure mounted on the outside of the displacement end of the linear transmission mechanism.

6. The air source heat pump evaporator capable of delaying frosting according to claim 5, characterized in that: A rotary joint (25) capable of maintaining sealing and being rotatable is mounted at the center of the transmission member (24); a central fixing member of the rotary joint (25) is mounted at the axial center of the transmission member (24); one end of an outer rotary member of the rotary joint (25) is connected to a bellows (27); and the other end of the outer rotary member of the rotary joint (25) is connected to an external air supply source.

7. The air source heat pump evaporator capable of delaying frosting according to claim 6, characterized in that: A butt joint (26) is formed by pressing at the outer end of the bellows (27), and the butt joint (26) is sealed and fixed to one end of the outer rotating part of the rotating joint (25).

8. The air source heat pump evaporator capable of delaying frosting according to claim 1, characterized in that: The wave crest spacing of the corrugated tube (27) can be adjusted according to the number of slits of the heat sink (14) and the slit spacing of the heat sink (14).

9. The air source heat pump evaporator capable of delaying frosting according to claim 1, characterized in that: The center lines of all the exhaust ports (28) coincide with a virtual straight line, and the virtual straight line is parallel to the axis of the reinforcement rod (21).

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