Air-cooled heat pump unit with defrosting function

Abstract

The utility model relates to the technical field of air-cooled heat pump air conditioning units, and discloses an air-cooled heat pump unit with a defrosting function, which comprises a frame body, a main machine is fixedly connected to the inner bottom surface of the frame body, the main machine is fixedly connected with a heat exchanger through a fixedly connected copper pipe, and the heat exchanger is fixedly connected with the frame body. A side plate is fixedly connected to the side wall of the frame body, and a defrosting assembly is arranged on the side wall of the side plate. According to the air-cooled heat pump unit with the defrosting function, hot air flow is sprayed out through the air spraying head and then blows through the heat exchanger, the high-speed hot air flow accelerates defrosting of a frost layer and blows away melted frost water to prevent the frost water from being re-frozen on the surface of the heat exchanger, the air spraying head swings up and down while transversely reciprocating, the hot air flow covers a larger range of the heat exchanger, and the defrosting effect is improved. The whole defrosting effect is improved, the airflow direction is adjusted, meanwhile, the dynamic impact effect can be formed, the structure of a frost layer is damaged, the frost layer is made to fall off more easily, and the defrosting time is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to air-cooled heat pump air conditioning unit technical field, concretely relates to an air-cooled heat pump unit with defrosting function. BACKGROUND

[0002] After entering winter, the use mode of air conditioner is mainly heating mode, but the average outdoor temperature in winter is below zero, when encountering heavy fog weather or other factors that promote air humidity increase, the surface of the outdoor unit heat exchanger of air conditioner will appear a large number of frost phenomenon, when the heat exchanger of outdoor unit is wrapped by frost, the heat exchanger is isolated from absorbing external heat, causing the heating effect of indoor unit to decline.

[0003] In the prior art, the defrosting mode that is more common and widely used is electric heating defrosting, and the basic principle is to install an electric heating assembly inside the heat exchanger, when the equipment is running, the electric energy is converted into heat energy to heat the surface of the heat exchanger, so that the frost layer attached to the surface is rapidly melted, this mode has the characteristics of simple structure and high defrosting efficiency, and is widely used in various refrigeration equipment and air source heat pump systems.

[0004] But the above defrosting mode in the actual use process, because the electric heating assembly needs to consume more electric energy in the working process, its energy consumption is high, increases the operation cost of the equipment, also reduces the overall energy utilization efficiency to some extent, in view of this, we propose an air-cooled heat pump unit with defrosting function. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an air-cooled heat pump unit with defrosting function, which avoids the problem of incomplete defrosting caused by uneven heat distribution in local areas.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] An air-cooled heat pump unit with defrosting function, comprising a frame, a main machine is fixedly connected to the inner bottom surface of the frame, the main machine is fixedly connected with a heat exchanger through a fixedly connected copper pipe, a side plate is fixedly connected to the side wall of the frame, a defrosting assembly is arranged on the side wall of the side plate, and the defrosting assembly comprises:

[0008] A support is fixedly connected with a fan, a connecting frame is fixedly connected to the bottom end surface of the support, a wind scooper is fixedly connected to the end of the connecting frame away from the support, a heating pipe is fixedly connected to the inner wall of the wind scooper, a gas conveying pipe is fixedly connected to the bottom end surface of the wind scooper, and a gas jet head is fixedly connected to the end of the gas conveying pipe away from the wind scooper.

[0009] The motor is fixedly connected with a reciprocating screw rod, the side wall of the reciprocating screw rod is threadedly connected with a mounting block, the bottom of the mounting block is hingedly connected with a hinge block, the hinge block is slidably connected with a jet head, the end surface of the jet head is hingedly connected with a limiting rod, the end of the limiting rod away from the jet head is fixedly connected with a limiting block, and the limiting block is sleeved with a connecting rod.

[0010] The oblique plate is fixedly connected to the side wall of the side plate, and the end surface of the oblique plate is provided with a guide groove.

[0011] The motor is fixedly connected to the outer wall of the side plate, the side wall of the side plate is fixedly connected with a cross rod, and the cross rod is sleeved with the mounting block.

[0012] The guide groove is arranged in a wave shape, the limiting rod is slidably connected with the guide groove, and the wave-shaped guide groove guides the limiting rod.

[0013] The connecting rod is arranged in a character shape, and the end of the connecting rod away from the limiting block is fixedly connected to the top end surface of the mounting block.

[0014] The bracket is fixedly connected to the inner wall of the frame body, the air scoop is located directly below the fan, the fan rotates to blow air downward, and part of the air enters the air scoop.

[0015] The air scoop is provided with a large-diameter end and a small-diameter end, the small-diameter end is fixedly connected with the air conveying pipe, and the large-diameter end is located below the fan; air flow passes through the air scoop, and due to the decrease in pipe diameter, the flow rate of the air is accelerated.

[0016] The top end surface of the frame body is fixedly connected with a vertical rod, and the top end of the vertical rod is fixedly connected with a flow guide plate.

[0017] The technical effects achieved by the utility model are as follows:

[0018] 1. The air-cooled heat pump unit with defrosting function, through the defrosting assembly, hot air is sprayed out through the jet head, and then blows through the heat exchanger, the heat transfer efficiency is improved through the enhancement of air flow kinetic energy, the heat energy loss is reduced, the high-speed hot air flow accelerates the melting of the frost layer, and the high-speed flowing hot air flow can also blow away the melted frost water, prevents the frost water from re-icing on the surface of the heat exchanger, the jet head swings up and down while moving transversely, compared with the fixed jet head, the design can make the hot air flow cover a larger range of the heat exchanger, avoid the problem that the defrosting is not complete due to uneven heat distribution in the local area, improve the overall defrosting effect, and form a dynamic impact effect while adjusting the air flow direction, so that the structure of the frost layer can be damaged, the frost layer is more easily shed, and the defrosting time is reduced.

[0019] 2、The air-cooled heat pump unit with defrosting function can block rainwater, prevent rainwater from directly impacting or infiltrating into the equipment, protect internal elements from being affected by dampness, improve the reliability and service life of the system, and the deflector can also guide external airflow, orderly guide air, and help improve the heat exchange efficiency of the heat exchanger. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the main body of the utility model;

[0022] Figure 3 It is a schematic diagram of the fan structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the mounting plate structure of the utility model;

[0024] Figure 5 It is a schematic diagram of the air injection head structure of the utility model.

[0025] In the figure: 1, frame; 2, main machine; 3, heat exchanger; 4, side plate; 5, defrosting assembly; 501, support; 502, fan; 503, connecting frame; 504, air deflector; 505, heating pipe; 506, gas conveying pipe; 507, air injection head; 508, motor; 509, reciprocating screw rod; 510, mounting block; 511, hinged block; 512, limiting rod; 513, limiting block; 514, connecting rod; 515, inclined plate; 516, guide groove; 6, cross bar; 7, vertical rod; 8, deflector. DETAILED DESCRIPTION

[0026] In order to make the purpose and advantages of the utility model more clear and obvious, the utility model is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the utility model, and does not strictly limit the protection scope of the utility model. As used in this text, the terms "parallel" and "perpendicular" are not limited to their strict geometric definitions, but include reasonable and inconsistent tolerances for machining or human error;

[0027] In combination Figures 1 to 5 with the specific features of the air-cooled heat pump unit with defrosting function are described in detail as follows:

[0028] As Figures 1-5The utility model provides a technical scheme: a kind of air-cooled heat pump unit with defrosting function, including frame body 1, the inside bottom surface of frame body 1 is fixedly connected with host computer 2, host computer 2 is fixedly connected with heat exchanger 3 by fixedly connected copper pipe, the side wall of frame body 1 is fixedly connected with side plate 4, the side wall of side plate 4 is provided with defrosting assembly 5, defrosting assembly 5 includes support 501, fan 502, connecting bracket 503, air scoop 504, heating pipe 505, gas pipe 506, jet head 507, motor 508, reciprocating screw rod 509, mounting block 510, hinged block 511, limiting rod 512, limiting block 513, connecting rod 514, oblique plate 515, guide groove 516.

[0029] In an embodiment of the utility model, support 501 is fixedly connected with fan 502, the bottom end surface of support 501 is fixedly connected with connecting bracket 503, one end away from support 501 of connecting bracket 503 is fixedly connected with air scoop 504, the inner wall of air scoop 504 is fixedly connected with heating pipe 505, the bottom end surface of air scoop 504 is fixedly connected with gas pipe 506, one end away from air scoop 504 of gas pipe 506 is fixedly connected with jet head 507, support 501 is fixedly connected in the inner wall of frame body 1, air scoop 504 is located just below fan 502, fan 502 rotates, air is blown down, part of air enters air scoop 504, air scoop 504 is provided with large diameter end and small diameter end, small diameter end is fixedly connected with gas pipe 506, and large diameter end is located below fan 502, airflow passes through air scoop 504, and the flow rate of air is accelerated due to the decrease of pipe diameter.

[0030] The output end of motor 508 is fixedly connected with reciprocating screw rod 509, the side wall of reciprocating screw rod 509 is threadedly connected with mounting block 510, the bottom of mounting block 510 is hingedly connected with hinged block 511, hinged block 511 is slidably connected with jet head 507, the end surface of jet head 507 is hingedly connected with limiting rod 512, one end away from jet head 507 of limiting rod 512 is fixedly connected with limiting block 513, limiting block 513 is sleeved with connecting rod 514, connecting rod 514 is arranged in the shape of Chinese character, one end away from limiting block 513 of connecting rod 514 is fixedly connected in the top end surface of mounting block 510, motor 508 is fixedly connected in the outer wall of side plate 4, the side wall of side plate 4 is fixedly connected with cross bar 6, cross bar 6 is sleeved with mounting block 510, oblique plate 515 is fixedly connected in the side wall of side plate 4, the end surface of oblique plate 515 is provided with guide groove 516. Guide groove 516 is arranged in the shape of wave, limiting rod 512 is slidably connected with guide groove 516, and wave-shaped guide groove 516 guides limiting rod 512.

[0031] The fan 502 rotates to blow air downward, part of which enters the air duct 504, is heated by the heating pipe 505, and then passes through the air duct 504, and due to the decrease in pipe diameter, the air flow rate is further accelerated, the hot air flow is sprayed out through the air jet head 507, and then blows through the heat exchanger 3, the heat transfer efficiency is improved by increasing the kinetic energy of the air flow, the heat energy loss is reduced, the high-speed hot air flow accelerates the melting of the frost layer, and the high-speed hot air flow can also blow away the melted frost water to prevent it from re-icing on the surface of the heat exchanger 3, improve the stability of the equipment operation, reduce the residual moisture on the surface of the heat exchanger 3, avoid the risk of secondary frosting, improve the continuous working capacity of the equipment, reduce the electric heating power, thereby reducing the energy consumption of the equipment and improving the economic efficiency of operation.

[0032] The motor 508 drives the reciprocating screw rod 509 to rotate, further enabling the mounting block 510 to move transversely, the limiting rod 512 slides in the guide groove 516, and the air jet head 507 is further swung up and down while moving transversely, compared with the fixed air jet head 507, this design can cover a larger range of the heat exchanger 3 with hot air flow, avoid the problem of incomplete defrosting caused by uneven heat distribution in local areas, improve the overall defrosting effect, and form a dynamic impact effect while adjusting the air flow direction, which can destroy the structure of the frost layer and make the frost layer more easily fall off, reduce the defrosting time, improve the efficiency, and the connecting rod 514 connects the limiting block 513 and the mounting block 510, so that the limiting block 513 always remains stable during movement, ensuring that the limiting rod 512 does not deviate when sliding in the guide groove 516, and making the reciprocating movement and swinging of the air jet head 507 more accurate, avoiding uneven defrosting effect or abnormal wear of the equipment caused by deviation of the running track.

[0033] In addition, the top end face of the frame body 1 is fixedly connected with a vertical rod 7, the top end of the vertical rod 7 is fixedly connected with a guide plate 8, the guide plate 8 can block rainwater to prevent rainwater from directly impacting or seeping into the equipment, protect the internal elements from moisture, improve the reliability and service life of the system, and at the same time, the guide plate 8 can also guide external air flow to orderly introduce air, which helps to improve the heat exchange efficiency of the heat exchanger 3 and ensure that the equipment can maintain good air flow under different environmental conditions.

[0034] In the utility model, when using, fan 502 rotates, air is blown downward, part of the air enters into air guide hopper 504, the air is heated through heating pipe 505, then passes through air guide hopper 504, because the pipe diameter is small, air flow rate is accelerated further, hot air flow is sprayed through air jet head 507, then blows through heat exchanger 3, through the enhancement of air flow kinetic energy, heat transfer efficiency is improved, heat energy loss is reduced, high-speed hot air flow accelerates frost layer melting, high-speed hot air flow can also blow away the melted frost water, prevent it from re-icing on the surface of heat exchanger 3, motor 508 drives reciprocating screw rod 509 to rotate, further makes mounting block 510 transverse reciprocating motion, limiting rod 512 slides in guide groove 516, then drives air jet head 507 to swing up and down while transverse reciprocating motion, compared with fixed air jet head 507, the design can let hot air flow cover the larger range of heat exchanger 3, avoid the problem that defrosting is not complete due to uneven heat distribution in local area, improve overall defrosting effect, can also form dynamic impact effect while adjusting air flow direction, so can destroy the structure of frost layer, make frost layer more easily fall off, reduce defrosting time.

Claims

1. A defrosting air-cooled heat pump unit, comprising a frame (1), wherein a main unit (2) is fixedly connected to the inner bottom surface of the frame (1), the main unit (2) is fixedly connected to a heat exchanger (3) via a fixedly connected copper pipe, and a side plate (4) is fixedly connected to the side wall of the frame (1), characterized in that: The side wall of the side panel (4) is provided with a defrosting assembly (5), the defrosting assembly (5) including: A bracket (501) is fixedly connected to a fan (502). A connecting frame (503) is fixedly connected to the bottom end face of the bracket (501). An air guide hopper (504) is fixedly connected to the end of the connecting frame (503) away from the bracket (501). A heating tube (505) is fixedly connected to the inner wall of the air guide hopper (504). An air supply pipe (506) is fixedly connected to the bottom end face of the air guide hopper (504). A jet nozzle (507) is fixedly connected to the end of the air supply pipe (506) away from the air guide hopper (504). A motor (508) is fixedly connected to a reciprocating lead screw (509) at its output end. A mounting block (510) is threadedly connected to the side wall of the reciprocating lead screw (509). A hinge block (511) is hinged to the bottom of the mounting block (510). The hinge block (511) is slidably connected to the jet head (507). A limit rod (512) is hinged to the end face of the jet head (507). A limit block (513) is fixedly connected to the end of the limit rod (512) away from the jet head (507). The limit block (513) is sleeved with the connecting rod (514). An inclined plate (515) is fixedly connected to the side wall of the side plate (4), and a guide groove (516) is provided on the end face of the inclined plate (515).

2. The air-cooled heat pump unit with defrosting function according to claim 1, characterized in that: The motor (508) is fixedly connected to the outer wall of the side plate (4), and a crossbar (6) is fixedly connected to the side wall of the side plate (4). The crossbar (6) is sleeved with the mounting block (510).

3. The air-cooled heat pump unit with defrosting function according to claim 1, characterized in that: The guide groove (516) is wavy, and the limiting rod (512) is slidably connected to the guide groove (516).

4. A defrosting air-cooled heat pump unit according to claim 1, characterized in that: The connecting rod (514) is arranged in a U-shape, and the end of the connecting rod (514) away from the limiting block (513) is fixedly connected to the top end face of the mounting block (510).

5. A defrosting air-cooled heat pump unit according to claim 1, characterized in that: The bracket (501) is fixedly connected to the inner wall of the frame (1), and the air guide hopper (504) is located directly below the fan (502).

6. A defrosting air-cooled heat pump unit according to claim 1, characterized in that: The air guide hopper (504) is provided with a large diameter end and a small diameter end. The small diameter end is fixedly connected to the air supply pipe (506), and the large diameter end is located below the fan (502).

7. A defrosting air-cooled heat pump unit according to claim 1, characterized in that: A vertical rod (7) is fixedly connected to the top end face of the frame (1), and a guide plate (8) is fixedly connected to the top end of the vertical rod (7).

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