Heat pump unit

Abstract

The utility model provides a heat pump unit. The fan is provided with a fan exhaust outlet which faces upwards during installation, and an exhaust mechanism is arranged at an outlet of the fan exhaust outlet; the exhaust mechanism comprises a plurality of flow deflectors which are arranged at the outlet of the fan exhaust outlet side by side at intervals, and the flow deflectors are inclined relative to the axial direction of the fan exhaust outlet so that the exhaust direction of the fan exhaust outlet can deflect relative to the axial direction of the fan exhaust outlet. The exhaust mechanism can enable exhausted cold air to deflect to a certain extent along the horizontal direction under the guide vanes through the guide vanes which are arranged relative to the initial air outlet direction and have a certain inclination angle. Due to the existence of the horizontal component velocity of the cold air, the cold air can settle after being exhausted and being far away from the air outlet of the fan, so that the problem that the exhausted cold air settles to the periphery of the air outlet of the fan to influence the heat exchange efficiency of the system can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation equipment, in particular to a heat pump unit. Background Art

[0002] Taking the air source heat pump unit as an example, the air source heat pump unit relies on heat exchange with the air to improve the heat exchange efficiency of the system. After the intake air exchanges heat with the refrigerant, it obtains cooled cold air, which is driven by the unit fan and discharged from the fan exhaust port. During the installation of the air source heat pump, the exhaust fan is usually installed on the top of the heat pump unit, and the fan exhaust port faces upward. For this reason, the cold air discharged through the fan exhaust port of the exhaust fan generally flows upward when flowing out of the fan exhaust port. However, due to the greater density of cold air, during operation, the exhausted cold air will gradually settle and return to the surroundings of the heat pump unit, resulting in a decrease in the ambient temperature around the unit, and then the temperature of the intake air is reduced, thereby reducing the heat exchange temperature difference of the heat exchanger and reducing the heat exchange efficiency of the heat pump unit. Utility Model Content

[0003] The cold air discharged from the fan exhaust port of the existing air source heat pump is basically upward. In this case, the settling of the cold air will cause the intake temperature of related equipment to decrease, thereby reducing the heat exchange efficiency. To solve this problem, the utility model provides a heat pump unit.

[0004] The utility model provides a heat pump unit, which has a fan exhaust port facing upward when installed, and an exhaust mechanism is arranged at the outlet of the fan exhaust port;

[0005] The exhaust mechanism includes a plurality of guide vanes arranged side by side and spaced apart at the outlet of the fan exhaust port, and the guide vanes are inclined relative to the axial direction of the fan exhaust port so that the exhaust direction of the fan exhaust port is deflected relative to its axial direction.

[0006] Preferably, the exhaust mechanism has a mounting frame, the guide plate is rotatably connected to the mounting frame, and the guide plate rotates relative to the mounting frame to adjust its inclination angle, thereby changing the exhaust direction.

[0007] Preferably, the guide plate is connected to a flip adjustment mechanism, and the flip adjustment mechanism drives the guide plate to adjust the tilt angle to change the exhaust direction.

[0008] Preferably, the flip adjustment mechanism is a crank-connecting rod mechanism, and the crank-connecting rod mechanism includes a rocker rod and a connecting rod;

[0009] The swing rod is rotatably connected to the guide vanes to achieve synchronous adjustment of the inclination angles of the guide vanes;

[0010] The swing rod is also rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the first power source.

[0011] Preferably, the first power source outputs a rotational motion, and the end of the connecting rod is eccentrically arranged relative to the rotation axis of the first power source.

[0012] Preferably, the exhaust mechanism is connected in a circumferential rotation corresponding to the exhaust port of the fan.

[0013] Preferably, it comprises a circumferential rotation mechanism, which comprises an annular slide rail and a plurality of supporting wheels arranged circumferentially around the annular slide rail;

[0014] The annular slide rail is fixedly arranged relative to the exhaust mechanism, and the supporting wheel is rotatably arranged on the exhaust port of the fan;

[0015] Under the support of the supporting wheel and the circumferential limit, the annular slide rail can rotate around the rotating axis where its center is located;

[0016] The circular rotation mechanism also includes a second power source, which is fixed on the fan exhaust port and drives the annular slide rail to rotate.

[0017] The utility model can make the discharged cold air deflect to a certain extent relative to the axial direction of the fan outlet of the heat pump unit under the guide vane by setting the guide vane with a certain inclination angle relative to the initial air outlet direction. Due to the existence of the horizontal component velocity of the cold air, it can settle after being away from the fan outlet, thus reducing the problem of the discharged cold air settling around the fan outlet and affecting the heat exchange efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the embodiment 1 of the heat pump unit of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the embodiment 2 of the heat pump unit of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the heat pump unit of the utility model;

[0021] Figure 4 It is a schematic diagram of the annular slide rail 221 of the embodiment 3 of the heat pump unit of the utility model;

[0022] Figure 5 , 6 It is a schematic diagram of the layout of the support wheel 222 of the embodiment 3 of the heat pump unit of the present utility model.

[0023] In the figure:

[0024] 1: exhaust mechanism; 11: guide vane; 110: rotation fulcrum; 12: flip adjustment mechanism; 121: rocker arm; 122: connecting rod; 123: first power source; 120: rotation connection point; 13: mounting frame; 22: circular rotation mechanism; 221: annular slide rail; 222: supporting wheel; 223: second power source; OT: fan exhaust port. DETAILED DESCRIPTION

[0025] The following is a detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments. In this specification, the dimensions of the drawings do not represent the actual dimension ratios. The drawings are only used to reflect the relative position relationship and connection relationship between the components. Components with the same name or the same number represent similar or identical structures and are only for illustrative purposes.

[0026] In the air source heat pump system, the heat in the air is mainly absorbed by heat exchange with the air. Therefore, the air source heat pump system has a significantly better energy utilization rate under limited energy input (electricity, gas energy). The heat exchange capacity between the air source heat pump system and the air has a significant impact on the improvement of the energy utilization rate of the system. Therefore, in the design and development of the air source heat pump system, improving the heat exchange efficiency between the heat pump system and the air is one of the important research and development tasks. From the perspective of system layout, the fan exhaust port of the existing air source heat pump system is generally set at the top of the system to provide an unobstructed external exhaust channel. However, it is found in practice that under such an arrangement, although an unobstructed external exhaust space can be ensured, the cold air will settle around the heat pump system after being discharged because its density is higher than that of the surrounding air, resulting in a decrease in the intake temperature, which in turn reduces the heat exchange efficiency of the system. For this reason, it is necessary to improve the existing fan exhaust port to reduce or avoid the discharge of cold air settling around the heat pump system.

[0027] The utility model provides a heat pump unit, wherein an exhaust mechanism 1 arranged at the fan exhaust port enables the exhausted cold air to flow out obliquely upward at a preset angle. Under this design, compared with the upward exhaust of cold air, the cold air will move away from the fan exhaust port OT and the heat pump system in a certain direction after settling, thereby reducing the impact on the heat pump intake temperature, thereby ensuring the heat exchange efficiency between the heat pump system and the air to a certain extent. Figure 1It is a schematic diagram of the structure of this embodiment. The exhaust mechanism 1 is arranged at the outlet of the fan exhaust port OT, and mainly includes a plurality of guide vanes 11 arranged side by side and spaced apart at the outlet of the fan exhaust port OT. The guide vane 11 is inclined relative to the axial direction of the fan exhaust port OT, thereby playing a role in causing the airflow to deflect. In this way, the exhaust direction of the fan exhaust port OT is changed, so that the exhausted airflow has a horizontal component velocity, so that the airflow can settle away from the heat pump unit. The guide vane 11 has an inclination angle relative to the axial direction F of the fan exhaust port OT, that is, there is a non-zero inclination angle α between the surface of the guide vane and the original outflow direction of the airflow. When the airflow from the fan exhaust port OT flows through the exhaust mechanism 1, it is blocked by the guide vane 11 and the guide effect turns the outflow to the inclined side of the guide vane 11, causing the exhaust gas to flow obliquely upward to the fan exhaust port OT. Due to the existence of the horizontal velocity of the gas, the exhausted cold air will be further away from the fan exhaust port OT and the corresponding heat pump system and other similar complete systems, thereby reducing the influence of the exhausted cold air on the heat exchange between the system and the surrounding air. Figure 1 The guide vane 11 having a planar guide surface is shown. In fact, the guide vane 11 does not need to be limited to a planar guide surface. Figure 1 This is only for the purpose of illustrating the principle. In order to reduce the kinetic energy loss of the exhaust airflow, the guide surface of the guide vane 11 may be a curved surface.

[0028] Figure 2 This is Example 2 of the present application. The inclination angle of the guide vane 11 is preferably adjustable to adjust the specific exhaust direction of the discharged cold air as needed. In order to achieve the angle adjustment of the guide vane 11, the guide vane 11 can be rotatably set on the mounting frame 13 of the exhaust mechanism 1. Generally, after the mounting frame 13 is connected to the fan exhaust outlet OT, the specific inclination angle of the guide vane 11 can be changed by rotating the guide vane 11 on the mounting frame 13, thereby achieving the purpose of adjusting the exhaust direction. The inclination angles of several guide vanes 11 are preferably adjusted synchronously in a linked manner, so that each guide vane 11 is synchronously deflected to the same expected inclination angle. The linked adjustment of the inclination angle of the guide vane 11 can be achieved via the flip adjustment mechanism 12, Figure 2An embodiment of a flip adjustment mechanism is given, in which a plurality of guide vanes 11 are synchronously tilted by a crank-connecting rod mechanism driven by a first power source 123. The flip adjustment mechanism 12 can adopt the crank-connecting rod mechanism shown in the figure, and the crank-connecting rod mechanism includes a rocker 121 and a connecting rod 122. Any guide vane 11 is rotatably arranged on the mounting frame 13 on the one hand, and is rotatably connected to the rocker 121 via a rotating connection point 120 on the other hand. A parallelogram mechanism is formed between each of the guide vanes 11 and the rocker 121 with the corresponding rotation fulcrum 110 and the rotating connection point 120 as vertices, so that when the rocker 121 moves horizontally, all the guide vanes 11 connected to the rocker 121 are synchronously tilted to the same tilt angle. The crank-connecting rod mechanism has a connecting rod 122, one end of which is rotatably connected to the rocker 121, and the other end is rotatably connected to the first power source 123. When the first power source 123 outputs rotational motion, the connecting rod 122 is eccentrically arranged with respect to the rotating shaft of the first power source 123. When the first power source 123 outputs reciprocating linear motion, the connecting rod 122 is simply rotationally connected to the first power source 123. The motion of the first power source 123 is outputted via the connecting rod 122 as a translational motion of the rocker arm 121, thereby driving the guide vane 11 to synchronously flip to a consistent tilt angle.

[0029] In this embodiment, the flip adjustment mechanism 12 is used to achieve synchronous adjustment of the inclination angles of several guide vanes 11, and the crank connecting rod mechanism can be used as one of its implementations, but it is not the only implementation. Based on the understanding of those skilled in the art, the gear set that is serially driven between the first power source 123 and the several guide vanes 11, and the chain drive system or belt drive system set between the first power source 123 and the several guide vanes 11 can also achieve synchronous adjustment of the inclination angles of several guide vanes 11. Correspondingly, the chain drive system or belt drive system can also be equivalently replaced by a rope set between the first power source 123 and the several guide vanes 11, so as to synchronize the inclination angles between the first power source 123 and the guide vanes 11 with the rope.

[0030] In this embodiment, the tilt angle of the plurality of guide vanes 11 can be flexibly controlled by the flip adjustment mechanism 12, thereby changing the outflow direction of the exhausted cold air so that it has a certain horizontal speed, thereby being away from the fan and the corresponding heat pump and other gas heat exchange systems provided with the fan exhaust port OT. At the same time, it is not excluded that when the tilt angle of the guide vane 11 is adjusted to the maximum value by the flip adjustment mechanism 12, the guide vane 11 completely closes the fan exhaust port OT to prevent foreign matter from falling into the fan exhaust port OT, thereby protecting the equipment. The specific maximum angle when closing depends on the specific structural setting. Figure 1 and Figure 2For a part of the guide vane 11, the maximum angle is 90 degrees. However, for some cases where the fan exhaust port assembly 1 is tilted at a certain angle relative to the positive cross-section of the fan exhaust port OT, the maximum angle may not be 90 degrees.

[0031] Figure 3 This is Example 3 of the present application. Based on Example 1 or Example 2, it is preferred that the exhaust mechanism 1 as a whole is rotated corresponding to the mounting seat of the fan etc. to adjust the direction of exhausting cold air in the circumferential direction of the fan exhaust port OT. The rotation setting of the exhaust mechanism 1 can be achieved by a circumferential rotation mechanism 22. Figure 4 , 5 6 shows an implementation of the circular rotating mechanism 22, which includes an annular slide rail 221 and a plurality of supporting wheels 222 circumferentially arranged around the annular slide rail 221; the annular slide rail 221 is fixedly arranged relative to the exhaust mechanism 1, and the supporting wheels 222 are rotatably arranged on the fan exhaust port OT. Under the support and circumferential limitation of the supporting wheels 222, the annular slide rail 221 can rotate around the rotating axis where its center is located. The circular rotating mechanism 22 also includes a second power source 223, which is fixedly arranged on the fan exhaust port OT. The second power source 223 and the annular slide rail 221 can drive the annular slide rail 221 to rotate through friction or meshing. The circumference of the annular slide rail 221 may have U-shaped groove features and gear features; the outer circle of the supporting wheel 222 is placed in the U-shaped groove of the annular slide rail 221 to achieve positioning and support; after the second power source 223 is fixed to the mounting base, the second power source 223 and the annular slide rail 221 have a fixed relative position, the second power source 223 is meshed with the gear features of the annular slide rail 221, and under the drive of the driving source, the annular slide rail 221 rotates on the supporting wheel 222. The circular rotating mechanism 22 is arranged between the exhaust mechanism 1 and the mounting base (such as the fan exhaust port), and any one of the annular slide rail 221 and the supporting wheel 222 of the circular rotating mechanism 22 can be fixed on the exhaust mechanism 1, and the other can be fixed on the mounting base. Based on this, it can be understood that the relative rotation of the fan exhaust port assembly 1 relative to the fan exhaust port OT can be achieved. The specific implementation method of the exhaust mechanism 1 as a whole being rotated corresponding to the mounting seat of the fan to realize the adjustment of the exhaust direction of cold air in the circumferential direction of the fan exhaust port OT is not limited to the circular rotation mechanism 22, and other mechanisms with the same rotation function are also acceptable, such as gear rotation, chain rotation, belt drive and rope drive, etc.

[0032] Since the exhaust mechanism 1 is rotatably arranged, when the guide vane 11 has a certain inclination angle, if the circumferential angle of the exhaust mechanism 1 is changed by rotating it, the direction in which the exhausted cold air is deflected in the circumferential direction of the fan exhaust port OT under the deflection of the guide vane 11 can be changed accordingly, thereby achieving the adjustable exhaust direction of the system in any circumferential direction. In some cases, such as when there is horizontal crosswind in the environment, circumferential adjustment of the exhaust direction of the exhaust mechanism 1 can effectively avoid headwind exhaust and prevent cold air from returning to the surroundings of the system under the action of headwind. Of course, it is not ruled out that the exhaust cold air can be circumferentially discharged in the system by continuously keeping the guide vane 11 rotating at a certain speed to avoid the accumulation of cold air in a specific direction.

[0033] The above content is only a description of the preferred implementation mode of the utility model, and does not limit the scope of the utility model. Without departing from the design spirit of the utility model, various modifications and improvements made to the technical solution of the utility model by ordinary technicians in this field should fall within the protection scope determined by the claims of the utility model.

Claims

1. A heat pump unit having a fan outlet (OT) facing upward when installed, characterized in that: An exhaust mechanism (1) is arranged at the outlet of the fan exhaust port (OT); The exhaust mechanism (1) comprises a plurality of guide vanes (11) arranged side by side and spaced apart at the outlet of the fan exhaust port (OT); the guide vanes (11) are inclined relative to the axial direction of the fan exhaust port (OT) so that the exhaust direction of the fan exhaust port (OT) is deflected relative to its axial direction.

2. The heat pump unit according to claim 1, characterized in that: The exhaust mechanism (1) has a mounting frame (13), the guide plate (11) is rotatably connected to the mounting frame (13), and the guide plate (11) rotates relative to the mounting frame (13) to adjust its inclination angle, thereby changing the exhaust direction.

3. The heat pump unit according to claim 2, characterized in that: The guide plate (11) is connected to a flip adjustment mechanism (12), and the flip adjustment mechanism (12) drives the guide plate (11) to adjust the tilt angle so as to change the exhaust direction.

4. The heat pump unit according to claim 3, characterized in that: The flip adjustment mechanism (12) is a crank-connecting rod mechanism, and the crank-connecting rod mechanism comprises a rocker rod (121) and a connecting rod (122); The swing rod (121) and the plurality of guide vanes (11) are rotatably connected to achieve synchronous adjustment of the inclination angles of the plurality of guide vanes (11); The swing rod (121) is also rotationally connected to one end of the connecting rod (122), and the other end of the connecting rod (122) is rotationally connected to the first power source (123).

5. The heat pump unit according to claim 4, characterized in that: The first power source (123) outputs a rotational motion, and the end of the connecting rod (122) is eccentrically arranged relative to the rotation axis of the first power source (123).

6. The heat pump unit according to any one of claims 1 to 5, characterized in that: The exhaust mechanism (1) is connected to the circumferential rotation of the fan exhaust port (OT).

7. The heat pump unit according to claim 6, characterized in that: The circular rotating mechanism (22) comprises an annular slide rail (221) and a plurality of supporting wheels (222) arranged circumferentially around the annular slide rail (221); The annular slide rail (221) is fixedly arranged relative to the exhaust mechanism (1), and the supporting wheel (222) is rotatably arranged on the fan exhaust port (OT); Under the support and circumferential limitation of the supporting wheel (222), the annular slide rail (221) can rotate around the rotation axis where its center is located; The circular rotation mechanism (22) further comprises a second power source (223), wherein the second power source (223) is fixedly mounted on the fan exhaust port (OT), and the second power source (223) drives the annular slide rail (221) to rotate.

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