Fin type heat exchanger and heat pump water heater applying fin type heat exchanger

Abstract

The utility model discloses a fin type heat exchanger and a heat pump water heater applying the fin type heat exchanger, the fin type heat exchanger comprises a first fin type heat exchanger and a second fin type heat exchanger, and a first axial flow fan and a second axial flow fan which are respectively matched with the first fin type heat exchanger and the second fin type heat exchanger, the heat pump water heater comprises a compressor, a four-way valve, a waterway heat exchanger and a fin heat exchanger. The fin type heat exchanger composed of the first fin type heat exchanger and the second fin type heat exchanger is adopted, the heat absorption capacity of the fin type heat exchanger is reduced, the operation pressure and the current value of a unit are reduced, stable operation of the unit is guaranteed, and the service life of the unit is prolonged by sequentially reducing the rotating speed of the axial flow fan and closing the first fin type heat exchanger along with gradual increase of the environment temperature. The unit service life is prolonged.

Description

Technical Field

[0001] The utility model relates to a fin heat exchanger and a heat pump water heater using the fin heat exchanger. Background Art

[0002] Air source heat pump units are increasingly used in commercial hot water applications due to their energy-saving, high-efficiency and environmentally friendly advantages. The fin heat exchanger in the heat pump water heater acts as a heat source, absorbing heat from the air. When the ambient temperature is high, the amount of heat absorbed is large, and when the ambient temperature is low, the amount of heat absorbed is small. However, it has its drawbacks. When the ambient temperature is high, if the fin heat exchanger absorbs too much heat, it will cause problems such as high system pressure and high current.

[0003] Existing heat pump water heaters give priority to ensuring the heating capacity of the unit at low temperatures. Basically, the fin heat exchanger is designed to be too large. In order to ensure that the unit does not have problems such as high system pressure and high current under high temperature conditions, the fan speed is often reduced to reduce the heat absorption of the fin heat exchanger. However, this method is not the optimal control method. Utility Model Content

[0004] In view of the above problems, the utility model provides a fin heat exchanger and a heat pump water heater using the fin heat exchanger, which effectively solves the problems pointed out in the background technology.

[0005] The technical solution adopted by the utility model is:

[0006] A fin heat exchanger includes a first fin heat exchanger and a second fin heat exchanger, and a first axial flow fan and a second axial flow fan respectively matched with the first fin heat exchanger and the second fin heat exchanger, the first fin heat exchanger is provided with a first front refrigerant tube and a first rear refrigerant tube at both ends, the second fin heat exchanger is provided with a second front refrigerant tube and a second rear refrigerant tube at both ends, the first front refrigerant tube and the second front refrigerant tube are both connected to a front refrigerant main pipeline, the first rear refrigerant tube and the second rear refrigerant tube are both connected to a rear refrigerant main pipeline, and the first front refrigerant tube is provided with a solenoid valve.

[0007] Preferably, the first fin heat exchanger is located directly below the second fin heat exchanger, and the first fin heat exchanger and the second fin heat exchanger are of the same size.

[0008] Preferably, the axial flow fan is a dual-speed fan.

[0009] Preferably, a temperature sensor for monitoring the outdoor ambient temperature is also included.

[0010] At the same time, the utility model also provides a heat pump water heater, including a compressor, a four-way valve, a water heat exchanger and a fin heat exchanger arranged in sequence from front to back, the exhaust port of the compressor is connected to the D port of the four-way valve, the C port of the four-way valve is connected to the E port of the four-way valve after passing through the water heat exchanger and the fin heat exchanger in sequence, the S port of the four-way valve is connected to the return air port of the compressor, the fin heat exchanger includes a first fin heat exchanger and a second fin heat exchanger, and a first axial flow fan and a second axial flow fan respectively matched with the first fin heat exchanger and the second fin heat exchanger, the first fin heat exchanger is provided with a first front refrigerant pipe and a first rear refrigerant pipe at both ends, the second fin heat exchanger is provided with a second front refrigerant pipe and a second rear refrigerant pipe at both ends, the first front refrigerant pipe and the second front refrigerant pipe are both connected to the front refrigerant main pipeline, the first rear refrigerant pipe and the second rear refrigerant pipe are both connected to the rear refrigerant main pipeline, and the first front refrigerant pipe is provided with a solenoid valve.

[0011] Preferably, the first fin heat exchanger is located directly below the second fin heat exchanger, and the first fin heat exchanger and the second fin heat exchanger are of the same size.

[0012] Preferably, the first axial flow fan and the second axial flow fan are both dual-speed fans.

[0013] The two-speed fan has two gears: high-speed wind and low-speed wind, which can be selected according to needs when the unit is running.

[0014] Preferably, a temperature sensor for monitoring the outdoor ambient temperature is also included.

[0015] The outdoor ambient temperature is monitored by a temperature sensor, and the solenoid valve, the first axial flow fan and the second axial flow fan are adjusted according to the outdoor ambient temperature, thereby adjusting the heat absorption of the fin heat exchanger to a higher heat absorption when the ambient temperature is low, and to a lower heat absorption when the ambient temperature is high.

[0016] The utility model adopts a fin heat exchanger composed of a first fin heat exchanger and a second fin heat exchanger. As the ambient temperature gradually increases, the axial flow fan speed is reduced and the first fin heat exchanger is closed in turn to reduce the heat absorption of the fin heat exchanger, reduce the operating pressure and current value of the unit, ensure the stable operation of the unit, and improve the service life of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a fin heat exchanger;

[0018] Figure 2 It is a schematic diagram of the structure of a heat pump water heater. DETAILED DESCRIPTION

[0019] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] In addition, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0025] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0026] like Figure 1 As shown, a fin heat exchanger, a first fin heat exchanger 41 and a second fin heat exchanger 42, and a first axial flow fan 43 and a second axial flow fan 44 respectively matched with the first fin heat exchanger 41 and the second fin heat exchanger 42, the first fin heat exchanger 41 is provided with a first front refrigerant tube 45 and a first rear refrigerant tube 46 at both ends, the second fin heat exchanger 42 is provided with a second front refrigerant tube 47 and a second rear refrigerant tube 48 at both ends, the first front refrigerant tube 45 and the second front refrigerant tube 47 are both connected to the front refrigerant main pipeline 49, the first rear refrigerant tube 46 and the second rear refrigerant tube 48 are both connected to the rear refrigerant main pipeline 410, and the first front refrigerant tube 45 is provided with a solenoid valve 411.

[0027] The first fin heat exchanger 41 is located directly below the second fin heat exchanger 42 , and the first fin heat exchanger 41 and the second fin heat exchanger 42 are of the same size.

[0028] The first axial flow fan 43 and the second axial flow fan 44 are both dual-speed fans.

[0029] A temperature sensor 412 is also included for monitoring the outdoor ambient temperature.

[0030] like Figure 2As shown, a heat pump water heater using the heat exchanger includes a compressor 1, a four-way valve 2, a water heat exchanger 3 and a fin heat exchanger 4 which are arranged in sequence from front to back, wherein the exhaust port of the compressor 1 is connected to the D port of the four-way valve 2, the C port of the four-way valve 2 is connected to the E port of the four-way valve 2 after passing through the water heat exchanger 3 and the fin heat exchanger 4 in sequence, the S port of the four-way valve 2 is connected to the return air port of the compressor 1, and the fin heat exchanger 4 includes a first fin heat exchanger 41 and a second fin heat exchanger 42, and a second fin heat exchanger 41 and a second fin heat exchanger 42 which are matched with the first fin heat exchanger 41 and the second fin heat exchanger 42 respectively. An axial flow fan 43 and a second axial flow fan 44, a first front refrigerant tube 45 and a first rear refrigerant tube 46 are respectively provided at both ends of the first fin heat exchanger 41, a second front refrigerant tube 47 and a second rear refrigerant tube 48 are respectively provided at both ends of the second fin heat exchanger 42, the first front refrigerant tube 45 and the second front refrigerant tube 47 are both connected to the front refrigerant main pipeline 49, the first rear refrigerant tube 46 and the second rear refrigerant tube 48 are both connected to the rear refrigerant main pipeline 410, the first front refrigerant tube 45 is provided with a solenoid valve 411 for controlling the on and off, and the compressor 1 adopts a fixed frequency compressor.

[0031] The first fin heat exchanger 41 is located directly below the second fin heat exchanger 42 , and the first fin heat exchanger 41 and the second fin heat exchanger 42 are of the same size.

[0032] The first axial flow fan 43 and the second axial flow fan 44 are both dual-speed fans.

[0033] A temperature sensor 412 is also included for monitoring the outdoor ambient temperature.

[0034] The utility model performs different controls according to different ambient temperature, as follows:

[0035] When Tao≤22℃, the first axial flow fan 43 and the second axial flow fan 44 both operate in high-speed wind mode, and the solenoid valve 411 is opened. The high-speed wind disturbance increases the heat absorption of the fin heat exchanger 4, thereby improving the heating capacity of the unit.

[0036] When 22<Tao<38℃, the first axial flow fan 43 and the second axial flow fan 44 both operate at low speed, and the solenoid valve 411 is opened. The fans operate at low speed to reduce the heat absorption of the fin heat exchanger 4 and reduce the operating pressure of the unit.

[0037] When Tao ≥ 38°C, the second axial flow fan 44 operates at a low speed, the first axial flow fan 43 is turned off, and the solenoid valve 411 is closed. By closing half of the fin heat exchanger 4, the heat absorption of the fin heat exchanger 4 is further reduced, thereby reducing the operating pressure and current value of the unit.

[0038] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.

Claims

1. A fin heat exchanger, characterized in that: A first fin heat exchanger (41) and a second fin heat exchanger (42), and a first axial flow fan (43) and a second axial flow fan (44) respectively matched with the first fin heat exchanger (41) and the second fin heat exchanger (42); the first fin heat exchanger (41) is provided with a first front refrigerant tube (45) and a first rear refrigerant tube (46) at both ends; the second fin heat exchanger (42) is provided with a second front refrigerant tube (47) and a second rear refrigerant tube (48) at both ends; the first front refrigerant tube (45) and the second front refrigerant tube (47) are both connected to a front refrigerant main pipeline (49); the first rear refrigerant tube (46) and the second rear refrigerant tube (48) are both connected to a rear refrigerant main pipeline (410); and the first front refrigerant tube (45) is provided with a solenoid valve (411).

2. The fin heat exchanger according to claim 1, characterized in that: The first fin heat exchanger (41) is located directly below the second fin heat exchanger (42), and the first fin heat exchanger (41) and the second fin heat exchanger (42) are of the same size.

3. The fin heat exchanger according to claim 1, characterized in that: The first axial flow fan (43) and the second axial flow fan (44) are both dual-speed fans.

4. The fin heat exchanger according to claim 1, characterized in that: Also included is a temperature sensor (412) for monitoring the outdoor ambient temperature.

5. A heat pump water heater using the heat exchanger according to any one of claims 1 to 4, characterized in that: The invention comprises a compressor (1), a four-way valve (2), a water heat exchanger (3) and a fin heat exchanger (4) which are arranged in sequence from front to back, wherein the exhaust port of the compressor (1) is connected to the D port of the four-way valve (2), the C port of the four-way valve (2) is connected to the E port of the four-way valve (2) after passing through the water heat exchanger (3) and the fin heat exchanger (4) in sequence, the S port of the four-way valve (2) is connected to the return air port of the compressor (1), and the fin heat exchanger (4) comprises a first fin heat exchanger (41) and a second fin heat exchanger (42), and respectively matched with the first fin heat exchanger (41) and the second fin heat exchanger (42). A first axial flow fan (43) and a second axial flow fan (44), the first fin heat exchanger (41) is provided with a first front refrigerant tube (45) and a first rear refrigerant tube (46) at both ends, and the second fin heat exchanger (42) is provided with a second front refrigerant tube (47) and a second rear refrigerant tube (48) at both ends, the first front refrigerant tube (45) and the second front refrigerant tube (47) are both connected to a front refrigerant main pipeline (49), the first rear refrigerant tube (46) and the second rear refrigerant tube (48) are both connected to a rear refrigerant main pipeline (410), and the first front refrigerant tube (45) is provided with a solenoid valve (411).

6. A heat pump water heater according to claim 5, characterized in that: The first fin heat exchanger (41) is located directly below the second fin heat exchanger (42), and the first fin heat exchanger (41) and the second fin heat exchanger (42) are of the same size.

7. The heat pump water heater according to claim 5, characterized in that: The first axial flow fan (43) and the second axial flow fan (44) are both dual-speed fans.

8. The heat pump water heater according to claim 5, characterized in that: Also included is a temperature sensor (412) for monitoring the outdoor ambient temperature.

Images