Evaporator structure of air source heat pump

Abstract

The utility model discloses an evaporator structure of an air source heat pump, which comprises a shell, an evaporator body is arranged in the shell, and a mesh fence is fixedly mounted outside the shell; a ventilation mechanism is arranged on the top of the shell, and filtering assemblies are symmetrically arranged in the upper portion of the shell. Wherein the ventilation mechanism comprises fixing frames symmetrically and fixedly installed in the shell, a supporting frame is fixedly installed at the tops of the fixing frames, and a fixing box is embedded in one side of the top of the shell, so that the ventilation effect of the evaporator body can be greatly improved, the evaporation performance of the evaporator body is further improved, and the heat efficiency of a product is improved; and the phenomenon that dust is accumulated in the shell when the device is not used can be effectively avoided, then the probability that the evaporator body is damaged is effectively avoided, and the use cost of the device can be greatly improved through the operation mode that one power-on device drives two sets of fan blades.

Description

Technical Field

[0001] This utility model relates to the field of air source heat pump technology, specifically to an evaporator structure for an air source heat pump. Background Technology

[0002] Currently, the structure of a traditional air source heat pump generally includes a compressor, a four-way valve, a condenser, a throttling element, an evaporator, and a gas-liquid separator. The compressor's exhaust port, four-way valve, condenser, throttling element, evaporator, gas-liquid separator, and compressor return port form a refrigerant circulation loop through working fluid heat exchange tubes. When a traditional air source heat pump is used in a drying room, it provides high-temperature gas into the drying room, and the evaporator is generally installed on the outside of the drying room.

[0003] Publication No. CN216204480U discloses a high-efficiency evaporator for an air source heat pump. This device increases the evaporation area by setting the heat exchange fin assembly of the evaporator to an inverted "M" shape, without changing the footprint. Simultaneously, the top fan structure ensures uniform airflow, fully utilizing the evaporation capacity, improving product thermal efficiency, and ensuring optimal performance. However, this patent still has the following problems in practical use:

[0004] This device, through its top-mounted fan structure, ensures uniform airflow, fully utilizes evaporation capacity, improves product thermal efficiency, and guarantees performance. However, when in use, the evaporator is typically placed outside the drying room. Since the existing fan structure does not have dustproof capabilities, dust can directly enter the fan and further into the evaporator shell when the evaporator is not in use. This dust accumulates on the heat exchange fins, hindering airflow, reducing heat exchange efficiency, affecting equipment performance, and causing inconvenience for operators.

[0005] An evaporator structure for an air source heat pump is proposed to address the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide an evaporator structure for an air source heat pump, in order to solve the problem mentioned in the background art. Currently, the structure of the top fan ensures the uniformity of airflow, fully utilizes the evaporation capacity, improves the thermal efficiency of the product, and ensures the effect of use. However, when the device is in use, the evaporator is generally placed outside the drying room. Since the existing fan structure does not have a dustproof function, when the evaporator is not in use, dust can directly enter the fan and further enter the evaporator shell. As a result, dust accumulates on the heat exchange fins, which will hinder airflow, reduce heat exchange efficiency, and affect the performance of the equipment.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an evaporator structure for an air source heat pump, comprising a housing, an evaporator body being disposed inside the housing, and wire mesh being fixedly installed on the exterior of the housing; a ventilation mechanism being disposed on the top of the housing, and filter components being symmetrically disposed on the upper interior of the housing;

[0008] The ventilation mechanism includes a fixed frame symmetrically fixedly installed inside the housing, a support frame fixedly installed on the top of the fixed frame, a fixed box embedded on one side of the top of the housing, a positioning box symmetrically fixedly installed inside the upper part of the housing, a rotating rod rotatably connected between the fixed box, the positioning box and the housing, a worm gear rotatably connected inside the fixed box, a worm wheel fixedly installed on the outside of the end of the rotating rod near the fixed box, a servo motor fixedly connected to the top of the worm gear, a rotating shaft rotatably connected inside the upper part of the positioning box, first conical teeth symmetrically fixedly installed on the outside of both ends of the rotating rod, a second conical tooth fixedly installed on the bottom of the rotating shaft, fan blades fixedly installed on the outside of the rotating shaft, a blocking block inserted into the top inner side of the support frame, a moving plate fixedly connected to the top of the blocking block, and fixed pipes symmetrically fixedly connected to the top of the housing, a pressing rod slidably connected inside the upper part of the fixed pipe, and a fixed connection between the top of the pressing rod and the moving plate.

[0009] Preferably, a slider is fixedly connected to the bottom of the extrusion rod, and the outside of the slider is slidably connected to the inside of the fixed tube, and a first contraction spring is sleeved on the outside of the extrusion rod.

[0010] Preferably, the filter assembly includes positioning grooves all formed inside the housing, with a frame plate inserted into the positioning groove and a filter screen embedded inside the frame plate. A connecting box is symmetrically fixedly installed inside the upper part of the frame plate, and slots are symmetrically formed on the inner top of each positioning groove. A connecting frame is fixedly installed on one side of the connecting box, and a screw is threadedly connected to the upper part of the connecting box. A trapezoidal block is rotatably connected to the bottom of the screw. A sliding rod is slidably connected to one side of the connecting box, with a baffle fixedly installed at one end of the sliding rod. A second retraction spring is sleeved on the outer side of one end of the sliding rod. A roller is fixedly connected to the end of the baffle near the connecting box, and a push plate is fixedly installed at the end of the sliding rod away from the roller. Insert blocks are welded to one side of the push plate, and the insert blocks are inserted into the slots.

[0011] Preferably, the top outer side of the rotating shaft is engaged with a limiting plate, and the two ends of the limiting plate are fixedly connected to the inner side of the support frame.

[0012] Preferably, a groove is provided on one side of the inside of the connecting box, and a fixed rod is fixedly connected inside the groove. A limit block is symmetrically slidably connected to the outside of the fixed rod, and one side of the limit block is fixedly connected to the trapezoidal block.

[0013] Preferably, a rotating block is fixedly installed on the top of the screw.

[0014] Preferably, the worm and the worm wheel are meshed together, and the first conical tooth and the second conical tooth are meshed together.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The evaporator structure of this air source heat pump is as follows: The operator starts a servo motor to drive the worm gear to rotate, which in turn drives the worm wheel to rotate, which in turn drives the rotating rod to rotate. The rotation of the first conical tooth drives the rotation of the second conical tooth, and the rotation of the shaft drives the rotation of the fan blades. This airflow blows up the blockage, causing the moving plate to move the blockage away from the support frame. This allows external air to pass through the mesh and filter and enter the housing to contact the heat exchange fins. When the equipment stops running, the weight of the blockage itself causes it to engage with the inner top of the support frame, preventing dust accumulation when the equipment is not in use. This significantly improves the ventilation effect of the evaporator body, further enhancing its evaporation performance, increasing the product's thermal efficiency, and effectively preventing… When the equipment is not in use, dust accumulates inside the casing, effectively reducing the probability of damage to the evaporator body. The operation of two sets of fan blades driven by a single electrical device significantly improves the operating cost. Operators rotate two sets of screws inside the connecting box, causing trapezoidal blocks to slide within the box. The trapezoidal blocks, with their surface slope, press against rollers, causing the rollers to slide along a sliding rod within the box. Simultaneously, a baffle presses against the second compression spring, moving the sliding rod and pushing plate. Multiple sets of inserts then connect to slots, enabling quick installation and removal of the frame plates. This facilitates easy cleaning and replacement of the filter, effectively preventing external dust and impurities from entering the evaporator body and greatly improving the efficiency of daily maintenance.

[0016] 1. The servo motor, started by the operator, drives the worm gear to rotate. The worm gear's rotation drives the worm wheel, which in turn drives the rotating rod. The rotating rod, in turn, drives the two sets of first conical teeth, which in turn drive the second conical teeth. The second conical teeth then drive the rotating shaft, which in turn drives the fan blades. This fan blade rotation increases the pressure inside the support frame, causing airflow to blow the blockage away from the support frame. At this point, a moving plate moves the blockage away from the support frame, creating a negative pressure inside the casing. This forces outside air through the mesh and filter to enter the casing and contact the heat exchange fins. When the equipment stops running, and the fan blades no longer generate turbulence, the blockage's own weight allows it to engage with the inner top of the support frame, preventing dust accumulation when the equipment is not in use and significantly improving efficiency. This design improves the ventilation effect of the evaporator body, further enhancing its evaporation performance and increasing product thermal efficiency. It also effectively prevents dust accumulation inside the casing when the equipment is not in use, thus reducing the probability of evaporator damage. The operation of two sets of fan blades driven by a single power source significantly reduces operating costs and provides convenience for operators. When the moving plate moves the block, the squeezing rod slides inside the fixed tube, causing the slider to slide as well. The first contraction spring contracts under pressure. When the servo motor stops, the tension generated by the first contraction spring allows the block to quickly engage with the top of the support frame, greatly improving the dustproof efficiency of the block and enhancing its practicality for operators.

[0017] 2. The operator inserts multiple sets of frame plates into the positioning slots on the top of the housing. The operator then rotates two sets of screws inside the connecting box. The rotation of the screws causes the trapezoidal blocks to slide inside the connecting box. The trapezoidal blocks, with their surface slope, press against the rollers, causing the rollers to roll on the surface of the trapezoidal blocks. This, in turn, causes the rollers to drive the sliding rod to slide inside the connecting box. At this point, the baffle presses against the second contraction spring, and the sliding rod moves the push plate, allowing the multiple sets of inserts to engage with the slots. When the operator rotates the screws in the opposite direction, the tension generated by the second contraction spring assists in the reset of the push plate, enabling quick installation and removal of the frame plates. This facilitates the cleaning and replacement of the filter screen, effectively preventing external dust and impurities from entering the evaporator body and significantly improving the efficiency of daily maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3This is a cross-sectional view of the overall operating structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the overall structure of the ventilation mechanism in this utility model;

[0022] Figure 5 This is a side sectional view of the overall support frame structure in this utility model;

[0023] Figure 6 This is a partially enlarged structural diagram of the filter component in this utility model;

[0024] Figure 7 This is a partial enlarged structural diagram of the filter component in operation in this utility model;

[0025] Figure 8 This is a schematic diagram of the overall side view of the present invention.

[0026] In the diagram: 1. Shell; 101. Evaporator body; 102. Wire mesh; 2. Ventilation mechanism; 201. Fixing frame; 202. Support frame; 203. Fixing box; 204. Positioning box; 205. Rotating rod; 206. Worm gear; 207. Worm wheel; 208. Servo motor; 209. Rotating shaft; 210. First conical tooth; 211. Second conical tooth; 212. Fan blade; 213. Block; 214. Moving plate; 215. Fixing pipe; 216. Extrusion rod; 217. Slide 218. First contraction spring; 219. Limiting plate; 3. Filter assembly; 301. Positioning groove; 302. Frame plate; 303. Filter screen; 304. Connecting box; 305. Slot; 306. Connecting frame; 307. Screw; 308. Trapezoidal block; 309. Slide rod; 310. Baffle; 311. Second contraction spring; 312. Roller; 313. Push plate; 314. Insert block; 315. Slide groove; 316. Fixing rod; 317. Limiting block; 318. Rotating block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-8 The present invention provides a technical solution: an evaporator structure for an air source heat pump, including a housing 1, an evaporator body 101 is provided inside the housing 1, and wire mesh 102 is fixedly installed on the outside of the housing 1; a ventilation mechanism 2 is provided on the top of the housing 1, and filter components 3 are symmetrically arranged on the upper interior of the housing 1.

[0029] The ventilation mechanism 2 includes a fixed frame 201 symmetrically fixedly installed inside the housing 1, a support frame 202 fixedly installed on the top of the fixed frame 201, a fixed box 203 embedded on one side of the top of the housing 1, and a positioning box 204 symmetrically fixedly installed inside the upper part of the housing 1. A rotating rod 205 is rotatably connected between the fixed box 203, the positioning box 204 and the housing 1. A worm gear 206 is rotatably connected inside the fixed box 203, and a worm wheel 207 is fixedly installed on the outside of one end of the rotating rod 205 near the fixed box 203. A servo motor 208 is fixedly connected to the top of the worm gear 206. A rotating shaft 209 is rotatably connected inside the upper part of the positioning box 204. First conical teeth 210 are symmetrically fixedly installed on the outside of both ends of the rotating rod 205, and second conical teeth 211 are fixedly installed on the bottom of the rotating shaft 209. The worm gear 206 and the worm wheel 207 are meshed together. The fan blades 212 are fixedly installed on the outside of the rotating shaft 209 and meshing with the second conical tooth 211. A block 213 is inserted into the top inner side of the support frame 202, and a moving plate 214 is fixedly connected to the top of the block 213. Fixed pipes 215 are symmetrically fixedly connected to the top of the housing 1. A pressing rod 216 is slidably connected to the upper inside of the fixed pipe 215, and the top of the pressing rod 216 is fixedly connected to the moving plate 214. This greatly improves the ventilation effect of the evaporator body 101, further improves the evaporation performance of the evaporator body 101, improves the thermal efficiency of the product, and effectively avoids the accumulation of dust inside the housing 1 when the equipment is not in use, thereby effectively avoiding the probability of damage to the evaporator body 101. The operation mode of driving two sets of fan blades 212 through a single power supply device greatly improves the operating cost of the device and brings convenience to the staff during use.

[0030] A slider 217 is fixedly connected to the bottom of the extrusion rod 216, and the outside of the slider 217 is slidably connected to the inside of the fixed tube 215. A first contraction spring 218 is sleeved on the outside of the extrusion rod 216. The tension generated by the first contraction spring 218 allows the block 213 to be quickly inserted into the top of the support frame 202, thereby greatly improving the dustproof efficiency of the block 213 and making it more practical for workers. The top outer side of the rotating shaft 209 is engaged and rotatably connected to a limiting plate 219, and both ends of the limiting plate 219 are fixedly connected to the inside of the support frame 202. The engagement and rotatable connection between the top of the rotating shaft 209 and the limiting plate 219 greatly improves the stability of the rotating shaft 209 during rotation.

[0031] The filter assembly 3 includes positioning grooves 301 all formed inside the housing 1. A frame plate 302 is inserted into the positioning groove 301, and a filter screen 303 is embedded inside the frame plate 302. A connecting box 304 is symmetrically fixedly installed inside the upper part of the frame plate 302. Slots 305 are symmetrically formed on the inner top of the positioning grooves 301. A connecting frame 306 is fixedly installed on one side of the connecting box 304. A screw 307 is threadedly connected to the upper part of the connecting box 304, and the bottom of the screw 307 is rotatably connected. A trapezoidal block 308 is attached, and a slide rod 309 is slidably connected inside one side of the connecting box 304. A baffle 310 is fixedly installed at one end of the slide rod 309, and a second retraction spring 311 is sleeved on the outside of one end of the slide rod 309. A roller 312 is fixedly connected to the end of the baffle 310 near the connecting box 304, and a push plate 313 is fixedly installed at the end of the slide rod 309 away from the roller 312. An insert block 314 is welded to one side of the push plate 313, and the insert block 314 is inserted into the slot 305. The connection box 304 allows for quick installation and removal of the frame plate 302, facilitating cleaning and replacement of the filter screen 303. This effectively prevents external dust and impurities from entering the evaporator body 101, significantly improving the efficiency of daily maintenance and providing convenience for users. A sliding groove 315 is provided on one side of the connecting box 304, with a fixed rod 316 fixedly connected inside. A limiting block 317 is symmetrically slidably connected to the outside of the fixed rod 316, and one side of the limiting block 317 is fixedly connected to a trapezoidal block 308. The movement of the trapezoidal block 308 causes the two sets of limiting blocks 317 to slide outside the fixed rod 316, guiding the trapezoidal block 308 during movement and greatly improving its stability. A rotating block 318 is fixedly installed on the top of the screw 307, facilitating operation of the screw 307.

[0032] Working principle: Before using the evaporator structure of this type of air source heat pump, it is necessary to check the overall condition of the device to ensure it can operate normally. Figure 1 - Figure 8As shown, the servo motor 208, started by the operator, drives the worm gear 206 to rotate. The rotation of the worm gear 206 drives the worm wheel 207 to rotate, which in turn drives the rotating rod 205 to rotate. The rotation of the rotating rod 205 drives the two sets of first conical teeth 210 to rotate, which in turn drives the second conical teeth 211 to rotate. The rotation of the second conical teeth 211 drives the rotating shaft 209 to rotate, which in turn drives the fan blades 212 to rotate. The rotation of the fan blades 212 increases the internal pressure of the support frame 202. The airflow then blows up the block 213, causing the moving plate 214 to move the block 213 away from the support frame 202. This creates a negative pressure inside the casing 1, allowing outside air to enter the casing 1 through the mesh 102 and filter 303 and contact the heat exchange fins. When the equipment stops running, and the fan blades 212 no longer generate turbulence, the weight of the block 213 allows it to engage with the inner top of the support frame 202, preventing dust accumulation when the equipment is not in use. This significantly improves the efficiency of the evaporator body 101. The ventilation effect further improves the evaporation performance of the evaporator body 101, increases the product thermal efficiency, and effectively prevents dust accumulation inside the shell 1 when the equipment is not in use, thereby effectively reducing the probability of damage to the evaporator body 101. The operation mode of driving two sets of fan blades 212 through a single power supply device greatly improves the operating cost of the device and brings convenience to the staff. When the moving plate 214 moves the block 213, the squeezing rod 216 slides inside the fixed tube 215. At this time, the squeezing rod 216 drives the slider 217 to slide inside the fixed tube 215. At this time, the first contraction spring 218 is compressed and contracted. When the servo motor 208 stops running, the tension generated by the first contraction spring 218 allows the block 213 to be quickly inserted into the top of the support frame 202, thereby greatly improving the dustproof efficiency of the block 213 and bringing practicality to the staff. The engagement and rotational connection between the top of the rotating shaft 209 and the limiting plate 219 greatly improves the stability of the rotating shaft 209 during rotation.

[0033] The operator inserts multiple sets of frame plates 302 into the positioning grooves 301 on the top of the housing 1. At this time, frame plates 302 are installed on three sides of the outer surface of the housing 1. The filter screen 303 corresponds to the wire mesh 102, and the filter screen 303 filters dust and impurities in the outside air. Then, the operator rotates two sets of screws 307 inside the connecting box 304. The rotation of the screws 307 drives the trapezoidal block 308 to slide inside the connecting box 304. At this time, the trapezoidal block 308 uses its surface slope to press the roller 312. The roller 312 rolls on the surface of the trapezoidal block 308, which in turn drives the slide rod 309 to slide inside the connecting box 304. At this time, the baffle 310 presses the second contraction spring 311. The slide rod 309 drives the push plate 313 to move. At this time, multiple sets of insert blocks 314 are inserted into the slots 305. When the operator rotates the screw 307 in the reverse direction, the tension generated by the second contraction spring 311 assists in the reset of the push plate 313, enabling quick installation and removal of the frame plate 302. This facilitates the cleaning and replacement of the filter screen 303, effectively preventing external dust and impurities from entering the evaporator body 101 and greatly improving the efficiency of daily maintenance. The movement of the trapezoidal block 308 causes the two sets of limiting blocks 317 to slide outside the fixed rod 316, guiding the trapezoidal block 308 during movement and greatly improving its stability. The design of the rotating block 318 facilitates the operation of the screw 307.

[0034] The housing 1 and evaporator body 101 are the components used in the prior art air source heat pump evaporator LSGF-A420, which will not be described in detail here.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An evaporator structure for an air source heat pump, comprising a housing (1), wherein an evaporator body (101) is disposed inside the housing (1), and wire mesh (102) is fixedly installed on the outside of the housing (1); Its features are, Also includes: The top of the housing (1) is provided with a ventilation mechanism (2), and the upper interior of the housing (1) is symmetrically provided with filter components (3); The ventilation mechanism (2) includes a fixed frame (201) symmetrically fixedly installed inside the housing (1), and a support frame (202) fixedly installed on the top of the fixed frame (201). A fixed box (203) is embedded on one side of the top of the housing (1), and a positioning box (204) is symmetrically fixedly installed inside the upper part of the housing (1). A rotating rod (205) is rotatably connected between the fixed box (203), the positioning box (204) and the housing (1). A worm gear (206) is rotatably connected inside the fixed box (203), and a worm wheel (207) is fixedly installed on the outside of the end of the rotating rod (205) near the fixed box (203). A servo motor (208) is fixedly connected to the top of the worm gear (206). Furthermore, a rotating shaft (209) is rotatably connected to the upper interior of the positioning box (204), and first conical teeth (210) are symmetrically fixedly installed on the outer ends of the rotating rod (205), and second conical teeth (211) are fixedly installed on the bottom of the rotating shaft (209), and fan blades (212) are fixedly installed on the outer side of the rotating shaft (209). A block (213) is inserted into the inner side of the top of the support frame (202), and a moving plate (214) is fixedly connected to the top of the block (213). A fixed tube (215) is symmetrically fixedly connected to the top of the housing (1), and a pressing rod (216) is slidably connected to the upper interior of the fixed tube (215), and the top of the pressing rod (216) is fixedly connected to the moving plate (214).

2. The evaporator structure of an air source heat pump according to claim 1, characterized in that: The bottom of the extrusion rod (216) is fixedly connected to a slider (217), and the outside of the slider (217) is slidably connected to the inside of the fixed tube (215). A first contraction spring (218) is sleeved on the outside of the extrusion rod (216).

3. The evaporator structure of an air source heat pump according to claim 1, characterized in that: The filter assembly (3) includes positioning grooves (301) all opened inside the housing (1), and a frame plate (302) is inserted into the positioning groove (301). A filter screen (303) is embedded inside the frame plate (302). A connecting box (304) is symmetrically fixedly installed inside the upper part of the frame plate (302). Slots (305) are symmetrically opened on the inner side of the top of the positioning groove (301). A connecting frame (306) is fixedly installed on one side of the connecting box (304). A screw (307) is threadedly connected to the upper part of the connecting box (304). The bottom of the screw (307) is rotatably connected. There is a trapezoidal block (308), and a slide rod (309) is slidably connected inside one side of the connecting box (304). A baffle (310) is fixedly installed at one end of the slide rod (309), and a second retraction spring (311) is sleeved on the outside of one end of the slide rod (309). A roller (312) is fixedly connected at the end of the baffle (310) near the connecting box (304), and a push plate (313) is fixedly installed at the end of the slide rod (309) away from the roller (312). An insert (314) is welded to one side of the push plate (313), and the insert (314) is inserted into the slot (305).

4. The evaporator structure of an air source heat pump according to claim 1, characterized in that: The top outer side of the rotating shaft (209) is engaged with a limiting plate (219), and both ends of the limiting plate (219) are fixedly connected to the inner side of the support frame (202).

5. The evaporator structure of an air source heat pump according to claim 3, characterized in that: The connecting box (304) has a sliding groove (315) on one side inside, and a fixed rod (316) is fixedly connected inside the sliding groove (315). A limit block (317) is symmetrically slidably connected to the outside of the fixed rod (316), and one side of the limit block (317) is fixedly connected to the trapezoidal block (308).

6. The evaporator structure of an air source heat pump according to claim 3, characterized in that: A rotating block (318) is fixedly installed on the top of the screw (307).

7. The evaporator structure of an air source heat pump according to claim 1, characterized in that: The worm (206) is meshed with the worm wheel (207), and the first conical tooth (210) is meshed with the second conical tooth (211).

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