An air source heat pump

Abstract

The utility model belongs to heat pump technical field especially, is an air source heat pump to the current existence evaporimeter and condenser share the same air duct, influence compressor operation stability problem, present and propose the following scheme, including roof, bottom plate and two side plates, two side plates all are fixed between roof and bottom plate through bolt and form back type machine body frame, the machine body frame is fixed with the placement board, the placement board is opened in and has the through -hole, the top of placement board is fixed with and the second fan that communicates with the through -hole, the roof is opened in and has the matching groove, the matching groove is fixed with the condenser, form independent air duct through the baffle inclination design, cold and hot airflow is completely isolated, the measured heating COP value promotes, evaporimeter and condenser air duct independent setting, inhale air temperature fluctuation control in smaller range, compressor failure rate reduces.

Description

Technical Field

[0001] This utility model relates to the field of heat pump technology, and in particular to an air source heat pump. Background Technology

[0002] Traditional air source heat pumps suffer from insufficient thermal efficiency. Conventional designs employ a single air duct structure, and the mixing of hot and cold airflows leads to a decrease in heat exchange efficiency.

[0003] There are significant defects in the airflow organization. The evaporator and condenser share the same air duct, resulting in a fluctuation range of ±15℃ in the intake air temperature, affecting the operational stability of the compressor. The lack of physical isolation between the exhaust air gap and the hot air gap causes a cooling loss rate exceeding 25%, making it difficult to achieve a higher overall energy efficiency ratio for the heat pump. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where the evaporator and condenser share the same air duct, affecting the operational stability of the compressor, and to propose an air source heat pump.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An air source heat pump includes a top plate, a bottom plate, and two side plates. The two side plates are fixed between the top plate and the bottom plate by bolts to form a U-shaped body frame. A placement plate is fixed inside the body frame. A connecting hole is opened in the placement plate. A second fan connected to the connecting hole is fixed at the top of the placement plate. A matching groove is opened in the top plate. A condenser is fixed in the matching groove.

[0007] A partition is fixed between the placement plate and the base plate, which is used to divide the placement plate and the base plate into a cold air gap and a hot air gap. The hot air gap is connected to a connecting hole. An evaporator and a compressor are fixed in the cold air gap. The evaporator is used to absorb the heat of the air in the cold air gap. The compressor and the evaporator are fixedly connected by a pipe. The condenser and the compressor are fixedly connected by a pipe. A first cover plate is fixed to the side of the body frame by bolts. A connecting pipe connected to the cold air gap is fixed in the first cover plate. A first fan is fixed in the connecting pipe. The first fan is used to exhaust the cold air after the heat has been absorbed.

[0008] A second cover plate is fixed inside the frame of the machine body. An exhaust port for discharging hot air is formed between the second cover plate and the hot air gap. A set of heating components is provided at the exhaust port.

[0009] In one possible design, a filter plate is provided at the top of the top plate for filtering the air entering the matching slot.

[0010] In one possible design, the filter plate is fixed to the top of the top plate by bolts.

[0011] In one possible design, the heating assembly includes a connecting plate fixed between two side plates, with at least three heating rods evenly fixed to the side ends of the connecting plate.

[0012] In one possible design, the partition is made of stainless steel sheet.

[0013] In one possible design, the partition is inclined between the placement plate and the base plate.

[0014] In this application, during equipment operation, ambient air enters the matching tank through the top plate filter. The filter is made of G3 grade nylon material, which can intercept particles with a diameter ≥5μm, ensuring the cleanliness of the air entering the system. When the air flows through the condenser, the high-temperature, high-pressure refrigerant inside the condenser exchanges heat with the air, raising the air temperature to 45-50℃ to form hot air. At this time, the second fan operates at 1500m... 3 The system operates at a fan speed of / h, delivering hot air to the hot air gap through the connecting hole.

[0015] Meanwhile, the first wind turbine is 800m 3 Air is drawn in at a rate of / h from the evaporator exhaust gap. The low-pressure, low-temperature refrigerant inside the evaporator absorbs heat from the air in the exhaust gap, lowering the air temperature to 10-15℃ and creating cold air. This cold air is then discharged outside the equipment through a connecting pipe, completing a single cycle of air heat absorption and cold air discharge. Actual measurement data shows that this cycle can lower the air temperature on the evaporator side by 20-25℃ and raise the air temperature on the condenser side by 30-35℃.

[0016] Beneficial effects: In this utility model, the air source heat pump forms an independent air duct through the inclined design of the partition, which completely isolates the hot and cold airflows and improves the measured heating COP value.

[0017] In this utility model, the air source heat pump uses quick-release bolts to fix the filter plate, which shortens the replacement time and improves the equipment availability.

[0018] In this invention, the evaporator and condenser air ducts are set independently, the temperature fluctuation of the intake air is controlled within a small range, and the compressor failure rate is reduced. Attached Figure Description

[0019] Figure 1 This is a front-view perspective view of an air source heat pump proposed in this utility model;

[0020] Figure 2 This is a rear-view three-dimensional schematic diagram of an air source heat pump proposed in this utility model;

[0021] Figure 3This is a partial three-dimensional schematic diagram of an air source heat pump proposed in this utility model;

[0022] Figure 4 This is a second partial three-dimensional schematic diagram of an air source heat pump proposed in this utility model.

[0023] In the diagram: 1. Side plate; 2. First cover plate; 3. Top plate; 4. Bottom plate; 5. First fan; 6. Second cover plate; 7. Connecting pipe; 8. Heating rod; 9. Connecting plate; 10. Partition plate; 11. Placement plate; 12. Second fan; 13. Condenser; 14. Filter plate; 15. Connecting hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In one embodiment: Refer to Figures 1-4 An air source heat pump, applied in the field of heat pump technology, includes fixing two side plates 1 to a top plate 3 and a bottom plate 4 respectively with bolts to form a U-shaped frame. M6×20 stainless steel bolts are used, with a bolt spacing of 100mm to ensure the frame structure meets load-bearing requirements.

[0026] A mounting plate 11, made of 2mm thick galvanized steel sheet, is fixed inside the machine frame. An 80mm diameter connecting hole 15 is formed within the mounting plate 11, with chamfered edges to reduce airflow resistance. A second fan 12 is bolted to the top of the mounting plate 11; the fan's rated airflow is set to 1500m³ / h. 3 / h, to ensure hot air delivery efficiency;

[0027] A 50mm deep matching groove is formed within the top plate 3, with a 2mm clearance between the groove and the outer contour of the condenser 13. The condenser 13 uses a copper tube and aluminum fin structure, with a heat exchange area designed to be 2.5㎡ to meet the rated heating capacity requirement of 8kW. The condenser 13 is fixed to the matching groove with bolts, and the bolt preload is controlled at 15N·m.

[0028] The partition 10 is fixed between the placement plate 11 and the base plate 4. The partition 10 is made of 1.5mm thick stainless steel sheet and is stamped into shape. The partition 10 is installed at a 15° angle to form a cooling gap and a hot air gap. The angle of inclination is calibrated by a laser positioning instrument. The width of the cooling gap is set to 150mm and the width of the hot air gap is set to 200mm to ensure that the cross-sectional area of ​​the airflow channel meets the design requirements.

[0029] The evaporator is fixed within the evaporator exhaust gap. The evaporator uses a hydrophilic aluminum foil fin structure with a heat exchange area of ​​1.8㎡. A fully enclosed scroll compressor is used, with a rated power of 3.7kW. The evaporator and compressor are connected by copper tubing, with specifications of φ9.52×0.71mm. The length of the connecting pipe is controlled within 3m to reduce pressure loss.

[0030] The first cover plate 2 is bolted to the side of the frame. A 150mm diameter circular hole is drilled inside the first cover plate 2 for installing the connecting pipe 7. The connecting pipe 7 is made of PVC and is 500mm long. The first fan 5 is an axial flow fan, model SF-8, with a rated airflow of 800m³ / h. 3 / h, to ensure efficient cold air exhaust;

[0031] A second cover plate 6 is fixed inside the machine frame. The gap between the second cover plate 6 and the hot air forms an exhaust port, which is designed to be 300mm wide and 200mm high. The heating element is installed at the exhaust port. The connecting plate 9 is made of 3mm thick aluminum plate, and the heating rod 8 is made of stainless steel electric heating tube. The power of a single rod is set to 500W, and a total of 6 heating rods 8 are set, with a total power of 3kW, which meets the requirements for hot air temperature increase.

[0032] In another embodiment: Reference Figures 1-4 An improvement upon Example 1 is made by installing a filter plate 14 at the top of the top plate 3. The filter plate 14 uses a primary nylon filter screen with a filtration efficiency of G3 level. The filter plate 14 is fixed with M5×16 bolts with a bolt spacing of 80mm. After installation, an airtightness test is performed, and a pressure gauge is used to check the leakage at each joint of the frame to ensure that the leakage is less than 0.5Pa / min.

[0033] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An air source heat pump for absorbing heat from air to generate hot air, characterized in that, include: A U-shaped frame is provided, with a placement plate (11) fixed inside the frame. A connecting hole (15) is provided inside the placement plate (11). A second fan (12) connected to the connecting hole (15) is fixed at the top of the placement plate (11). A matching groove is provided inside the frame, and a condenser (13) is fixed inside the matching groove. A partition (10) is fixed between the placement plate (11) and the base plate (4) to separate the placement plate (11) and the base plate (4) into a cooling gap and a hot air gap. The hot air gap is connected to the connecting hole (15). An evaporator and a compressor are fixed in the cooling gap. The compressor and the evaporator are fixedly connected by a pipe. The condenser (13) and the compressor are fixedly connected by a pipe.

2. An air source heat pump according to claim 1, characterized in that, The U-shaped machine frame includes a top plate (3), a bottom plate (4), and two side plates (1). The two side plates (1) are fixed between the top plate (3) and the bottom plate (4) by bolts to form the U-shaped machine frame.

3. An air source heat pump according to claim 2, characterized in that, The top plate (3) is provided with a filter plate (14) at its top end, which is used to filter the air entering the matching slot.

4. An air source heat pump according to claim 3, characterized in that, The filter plate (14) is fixed to the top of the top plate (3) by bolts.

5. An air source heat pump according to any one of claims 1-4, characterized in that, A second cover plate (6) is fixed inside the frame of the machine body. An exhaust port for discharging hot air is formed between the second cover plate (6) and the hot air gap. A set of heating components is provided at the exhaust port. The heating components include a connecting plate (9) fixed between two side plates (1). At least three heating rods (8) are evenly fixed on the side end of the connecting plate (9).

6. An air source heat pump according to claim 1, characterized in that, The partition (10) is made of stainless steel plate.

7. An air source heat pump according to claim 1, characterized in that, The partition (10) is inclined between the placement plate (11) and the bottom plate (4).

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