Air source heat pump capable of defrosting and melting ice

Abstract

The present invention provides an air source heat pump capable of defrosting and melting ice, comprising a unit body and a dosing mechanism. The unit body has an installation space, and has a water storage tank connected to the bottom of the installation space, and a water outlet is provided on the water storage tank. An evaporation unit is provided in the installation space. The evaporation unit divides the installation space into an air outlet chamber and an air inlet chamber connected to the water storage tank. The dosing mechanism is fixedly mounted on the unit body, and is connected to a feeding port provided on the water storage tank, and can add inorganic salts to the water storage tank according to the ambient temperature. The air source heat pump capable of defrosting and melting ice provided by the present invention can effectively prevent the defrost water from freezing at the bottom of the installation space, and at the same time, the defrost water is discharged in time through the water outlet, thereby effectively avoiding energy consumption, and can also prevent the defrost water discharged from the water outlet from clogging subsequent pipelines, so that the deicing effect is good and the practicability is strong.

Description

Technical Field

[0001] The present invention belongs to the technical field of air source heat pumps, and in particular relates to an air source heat pump capable of achieving defrosting and ice melting. Background Art

[0002] An air source heat pump is a heat pump system that uses outdoor air as a low-temperature heat source. It is mainly used for heating and hot water. It absorbs, transmits and releases heat through a compression cycle. During the operation of an air source heat pump, frost may form on the surface of the evaporator. That is, the heat in the outdoor air is absorbed by the refrigerant, causing the evaporator temperature to drop, and the water vapor in the air condenses into frost on the surface of the evaporator.

[0003] In the prior art, defrost water will flow down the surface of the evaporator to the bottom of the heat exchange chamber and form an ice layer. Since it cannot be discharged in time, it will accumulate and affect the operation of the equipment. In this regard, the commonly used deicing method is to set a deicing heat exchange pipe at the bottom of the heat exchange chamber to melt the ice layer and achieve deicing. However, this method needs to be carried out outdoors, which adds additional energy consumption and consumes a lot of energy after long-term operation. Moreover, when the melted defrost water flows outward through the pipeline, it is easy to continue to freeze in the pipeline, which causes the defrost water at the bottom of the heat exchange chamber to be unable to be discharged and accumulate, resulting in poor deicing effect. Summary of the invention

[0004] The embodiment of the present invention provides an air source heat pump capable of achieving defrosting and ice melting, aiming to solve the problem of poor practicality of the existing air source heat pump due to poor deicing effect.

[0005] To achieve the above object, the technical solution adopted by the present invention is to provide an air source heat pump capable of achieving defrosting and ice melting, comprising:

[0006] The unit body has an installation space and a water storage tank connected to the bottom of the installation space, and the water storage tank is provided with a water outlet; an evaporation unit is provided in the installation space; the evaporation unit divides the installation space into an air outlet cavity and an air inlet cavity connected to the water storage tank;

[0007] The dosing mechanism is fixed on the unit body and connected to the feeding port arranged on the water storage tank, and is used for adding inorganic salts into the water storage tank according to the ambient temperature.

[0008] In a possible implementation, an air outlet communicating with the air outlet cavity is provided at the top of the unit body, and a fan is provided at the air outlet;

[0009] A plurality of air inlets are evenly distributed around the side wall of the unit body.

[0010] In a possible implementation, the evaporation unit is a V-shaped fin evaporator.

[0011] In a possible implementation, the drug adding mechanism includes:

[0012] A hopper is fixedly mounted on the unit body and has a medicine outlet at the bottom;

[0013] A material transfer pipeline, one end of which is connected to the feeding port;

[0014] A medicine discharging component is located above the feeding port, and the top end is connected to the medicine discharging port, and the bottom end is connected to the material transfer pipeline, and is used to control the inorganic salt in the hopper to quantitatively enter the material transfer pipeline;

[0015] A temperature sensor is provided on the hopper and is used to detect the ambient temperature in real time;

[0016] The matching control module is used to control the medicine dispensing component according to the data of the temperature sensor to adjust the medicine dispensing amount.

[0017] In a possible implementation, the medicine dispensing component includes:

[0018] A fixed cylinder, the axis of which is arranged in the horizontal direction, the fixed cylinder has a cylinder cavity, and the top end is provided with an inlet connected to the hopper, and the bottom end is provided with an outlet connected to the material transfer pipeline;

[0019] A rotating shaft, coaxially rotatably connected to the fixed cylinder;

[0020] There are at least four partition plates, each of which is arranged in the cylindrical cavity at an annular interval around the axis of the rotating shaft, one end of each partition plate is connected to the rotating shaft, and the other end extends along the radial direction of the rotating shaft and is in sliding contact with the inner wall of the cylindrical cavity; any two adjacent partition plates are enclosed with the inner wall of the cylindrical cavity to form a sub-cavity for storing inorganic salts;

[0021] The servo motor is used to drive the rotating shaft to rotate.

[0022] In a possible implementation, the height of the feeding port is higher than the height of the water outlet.

[0023] In a possible implementation, a support base is provided in the water storage tank to which the bottom end of the evaporation unit is fixedly connected, the support base extends along the through direction of the water outlet, and separates the water storage tank into a first open cavity and a second open cavity, and a port connecting the first open cavity and the second open cavity is provided at one end of the support base away from the dosing mechanism;

[0024] Wherein, the feeding port is communicated with the first open cavity, and the water outlet is communicated with the second open cavity.

[0025] In a possible implementation, the air source heat pump capable of achieving defrosting and ice melting further includes a circulation mechanism, and the circulation mechanism includes:

[0026] a circulation pipeline, one end of which is in communication with the first open cavity, and the other end of which is in communication with the second open cavity;

[0027] A circulation pump is arranged on the circulation pipeline and is used for conveying the saline in the second open cavity to the first open cavity for circulation.

[0028] In a possible implementation, a circulating water inlet for connection to the circulating pipeline and a water spray outlet for connection to the circulating pipeline are provided on the side wall of the water storage tank; the heights of the circulating water inlet and the water spray outlet are lower than the height of the water outlet; the water spray outlet is located directly below the feeding port and at the bottom of the water storage tank.

[0029] In a possible implementation, a nozzle is provided at the circulating water outlet.

[0030] In this implementation, a water storage tank is provided at the bottom of the installation space on the unit body, which can ensure that the defrost water flowing down from the evaporation unit can be received, and a dosing mechanism is provided on the unit body, which can add inorganic salts to the water storage tank, and the inorganic salts are dissolved in the defrost water in the water storage tank to reduce the melting point of the defrost water, thereby effectively preventing the defrost water from freezing at the bottom of the installation space, and at the same time, the defrost water can be discharged in time through the water outlet. This method can effectively avoid energy consumption, and can also prevent the defrost water discharged from the water outlet from clogging subsequent pipelines, with good deicing effect and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the air source heat pump structure capable of achieving defrosting and ice melting provided by an embodiment of the present invention Figure 1 ;

[0032] Figure 2 Schematic diagram of the air source heat pump structure capable of achieving defrosting and ice melting provided by an embodiment of the present invention Figure 2 (One of the side covers at the bottom of the unit body is hidden);

[0033] Figure 3 for Figure 1 A schematic diagram of the enlarged structure of the air source heat pump capable of achieving defrosting and ice melting provided in the embodiment;

[0034] Figure 4 for Figure 2A schematic cross-sectional structural diagram of a drug dispensing assembly of an air source heat pump capable of achieving defrosting and ice melting provided in an embodiment;

[0035] Figure 5 Schematic diagram of the structure of the water storage tank, the dosing mechanism and the circulation mechanism of the air source heat pump capable of achieving defrosting and ice melting provided by the embodiment of the present invention Figure 1 ;

[0036] Figure 6 Schematic diagram of the structure of the water storage tank, the dosing mechanism and the circulation mechanism of the air source heat pump capable of achieving defrosting and ice melting provided by the embodiment of the present invention Figure 2 .

[0037] Description of reference numerals:

[0038] 10. Unit body; 11. Water storage tank; 111. Feeding port; 112. Water outlet; 113. Circulating water outlet; 114. Water spray outlet; 115. First open cavity; 116. Second open cavity; 12. Support base; 13. Air outlet; 14. Fan; 15. Air inlet; 16. Evaporation unit;

[0039] 20. Dosing mechanism; 21. Hopper; 22. Material transfer pipeline; 23. Drug discharging assembly; 231. Fixed cylinder; 232. Rotating shaft; 233. Partition plate; 234. Servo motor;

[0040] 30. Circulation mechanism; 31. Circulation pipeline; 32. Circulation pump;

[0041] 40. Condensing unit. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] Please also read Figure 1 and Figure 3 , the air source heat pump capable of defrosting and melting ice provided by the present invention is now described. The air source heat pump capable of defrosting and melting ice comprises a unit body 10 and a dosing mechanism 20. The unit body 10 has an installation space, and has a water storage tank 11 connected to the bottom end of the installation space, and a water outlet 112 is provided on the water storage tank 11. An evaporation unit 16 is provided in the installation space. The evaporation unit 16 divides the installation space into an air outlet chamber and an air inlet chamber connected to the water storage tank 11. The dosing mechanism 20 is fixedly mounted on the unit body 10, and is connected to a feeding port 111 arranged on the water storage tank 11, and can add inorganic salts to the water storage tank 11 according to the ambient temperature.

[0044] Compared with the prior art, the air source heat pump capable of defrosting and melting ice provided in this embodiment has a water storage tank 11 arranged at the bottom of the installation space on the unit body 10, which can ensure that the defrost water flowing down from the evaporation unit 16 can be received, and a dosing mechanism 20 is arranged on the unit body 10, which can add inorganic salts to the water storage tank 11, and the inorganic salts are dissolved in the defrost water in the water storage tank 11 to reduce the melting point of the defrost water, thereby effectively preventing the defrost water from freezing at the bottom of the installation space, and at the same time, the defrost water can be discharged in time through the water outlet 112. This method can effectively avoid energy consumption, and can also prevent the defrost water discharged from the water outlet 112 from clogging the subsequent pipelines, and has a good deicing effect and strong practicality.

[0045] In this embodiment, the unit body 10 may include a cabinet, in which an installation space for the evaporation unit 16 is provided, and a condensing unit 40 connected to the evaporation unit 16 is also provided in the cabinet, and a compressor and a throttling device are provided between the two. Specifically, its working principle is that when the compressor is started, the low-temperature and low-pressure refrigerant is sucked from the evaporation unit 16, where it absorbs outdoor heat, the temperature of the surface of the evaporation unit 16 decreases, and the heat in the air is absorbed into the refrigerant, so that the refrigerant evaporates and becomes low-temperature and low-pressure steam. The refrigerant vapor carrying heat is compressed by the compressor, and the pressure and temperature rise. The high-temperature and high-pressure refrigerant vapor flows through the condensing unit 40, where it releases heat to the indoor air or water circulation, and the refrigerant vapor condenses into a liquid. The condensed liquid refrigerant passes through a throttling device (such as an expansion valve), and the pressure and temperature drop, becoming a low-temperature and low-pressure liquid, and then returns to the evaporation unit 16 again to start a new round of circulation. In addition, the condensing unit 40 is provided with a water inlet and a water outlet, and is connected to a hot water pipeline and a return water pipeline at the same time. The above technologies are all prior art and well known to those skilled in the art, and will not be described in detail here.

[0046] In some embodiments, the unit body 10 may be configured as follows: Figure 1 to Figure 2 See the structure shown. Figure 1 to Figure 2 An air outlet 13 communicating with the air outlet cavity is provided at the top of the unit body 10 , and a fan 14 is provided at the air outlet 13 .

[0047] A plurality of air inlets 15 are evenly distributed on the side walls surrounding the unit body 10. Preferably, the unit body 10 may be a rectangular parallelepiped structure with four side walls, and mesh sheets may be respectively provided at positions corresponding to the installation spaces of the side walls, and the air inlets 15 are formed by the mesh holes on the mesh sheets. In the actual working process, the fan 14 introduces air into the air inlet cavity from the air inlet 15, and then flows through the evaporation unit 16 and then flows out through the air outlet cavity at each air outlet 13.

[0048] In some embodiments, the evaporation unit 16 may be configured as follows: Figure 1 to Figure 2 See the structure shown. Figure 1 to Figure 2 The evaporation unit 16 is a V-shaped fin evaporator. This structure can easily form an air outlet cavity and an air inlet cavity, and the design of the fins can increase the heat exchange area with the space, improve the efficiency of heat exchange, and this structure can facilitate the smooth flow of defrost water and is also easy to maintain.

[0049] In some embodiments, the drug adding mechanism 20 may be implemented as follows: Figure 3 See the structure shown. Figure 3 The dosing mechanism 20 includes a hopper 21, a feed pipe 22, a medicine discharging component 23, a temperature sensor and a matching controller. The hopper 21 is fixed on the unit body 10, and has a medicine discharging port at the bottom. One end of the feed pipe 22 is connected to the feed port 111. The medicine discharging component 23 is located above the feed port 111, and the top end is connected to the medicine discharging port, and the bottom end is connected to the feed pipe 22, which can control the quantitative entry of inorganic salts in the hopper 21 into the feed pipe 22. The temperature sensor is arranged on the hopper 21, and can detect the ambient temperature in real time. The control module can control the medicine discharging component 23 according to the data of the temperature sensor to adjust the amount of medicine discharged.

[0050] Specifically, the salt water formed by adding inorganic salt to defrost water has a higher concentration and a lower melting point. Therefore, the temperature sensor monitors the ambient temperature in real time, and controls the medicine discharging component 23 through the controller to adjust the amount of inorganic salt added. The hopper 21 can ensure the storage of inorganic salt, which can be sodium chloride or calcium chloride. The material transfer pipeline 22 can ensure that the inorganic salt is directly delivered to the water storage tank 11.

[0051] The water storage tank 11 has a certain storage space, so it has a constant water storage capacity. The medicine dispensing component 23 can be regularly added with inorganic salts. The specific amount of inorganic salts can be determined according to the ambient temperature when added, thereby avoiding ice in the water storage tank 11.

[0052] In some embodiments, the medicine dispensing component 23 may be configured as follows: Figure 3 to Figure 4 See the structure shown. Figure 3 to Figure 4 The medicine discharging assembly 23 includes a fixed cylinder 231, a rotating shaft 232, a partition plate 233 and a servo motor 234. The axis of the fixed cylinder 231 is arranged in the horizontal direction. The fixed cylinder 231 has a cylinder cavity, and an inlet connected to the hopper 21 is provided at the top, and an outlet connected to the material transfer pipeline 22 is provided at the bottom. The rotating shaft 232 is coaxially connected to the fixed cylinder 231. There are at least four partition plates 233, and each partition plate 233 is arranged in the cylinder cavity around the axis of the rotating shaft 232 in an annular interval. One end of each partition plate 233 is connected to the rotating shaft 232, and the other end extends radially along the rotating shaft 232 and is in sliding contact with the inner wall of the cylinder cavity. Any two adjacent partition plates 233 are enclosed with the inner wall of the cylinder cavity to form a sub-cavity for storing inorganic salts. The servo motor 234 can drive the rotating shaft 232 to rotate.

[0053] In some embodiments, the above-mentioned feeding port 111 may adopt a structure as shown in Figures 5 and 6 . Referring to Figures 5 and 6 , the height of the feeding port 111 is higher than that of the water outlet 112. This structure can prevent the defrosting water from entering the feeding port 111, thereby ensuring that the inorganic salt can directly fall into the water storage tank 11.

[0054] In some embodiments, the above-mentioned water storage tank 11 may adopt a structure as shown in Figures 5 and 6 . Referring to Figures 5 and 6 , a support seat 12 for fixedly connecting the bottom end of the evaporation unit 16 is provided in the water storage tank 11. The support seat 12 extends along the through direction of the water outlet 112, and divides the water storage tank 11 into a first open cavity 115 and a second open cavity 116. An opening is provided at one end of the support seat 12 away from the chemical dosing mechanism 20 to communicate the two first open cavities 115 and the second open cavity 116.

[0055] Among them, the feeding port 111 is communicated with the first open cavity 115, and the water outlet 112 is communicated with the second open cavity 116.

[0056] The support seat 12 can ensure the fixed connection of the bottom end of the evaporation unit 16, and at the same time prevent the evaporation unit 16 from being immersed in the defrosting water. The inner tank of the water storage tank 11 is divided into a first open cavity 115 and a second open cavity 116 by the support seat 12, and the two are communicated through an opening, enclosing a "凵"-shaped water flow channel. This structure can ensure the communication of both sides of the evaporation unit 16 at the same time. In addition, the feeding port 111 and the water outlet 112 correspond to the first open cavity 115 and the second open cavity 116 respectively, which can ensure the full dissolution of the inorganic salt, ensure the uniform concentration of the defrosting water, and thus avoid icing.

[0057] In some embodiments, referring to Figure 3 and Figure 5 , the air source heat pump capable of defrosting and deicing further includes a circulation mechanism 30. The circulation mechanism 30 includes a circulation pipeline 31 and a circulation pump 32. One end of the circulation pipeline 31 is communicated with the first open cavity 115, and the other end is communicated with the second open cavity 116. The circulation pump 32 is arranged on the circulation pipeline 31 and can transport the brine in the second open cavity 116 to the first open cavity 115 for circulation.

[0058] The circulation mechanism 30 can re-transport the defrosting water in the second open cavity 116 to the first open cavity 115 through the circulation pump 32 and the circulation pipeline 31, thereby ensuring that the defrosting water is in a flowing state in the water flow channel. This structure can effectively stir the defrosting water and the inorganic salt in the water flow channel, promote dissolution, and ensure the uniform concentration of the inorganic salt.

[0059] It should be noted that the two ends of the circulation pipeline 31 are respectively connected to the two ends of the water passage.

[0060] In some embodiments, the water storage tank 11 may be Figure 6 See the structure shown. Figure 6 The side wall of the water storage tank 11 is provided with a circulating water inlet 113 connected to the circulating pipeline 31, and a water spraying port 114 connected to the circulating pipeline 31. The heights of the circulating water inlet 113 and the water spraying port 114 are both lower than the height of the water outlet 112. The water spraying port 114 is located directly below the feeding port 111 and at the bottom of the water storage tank 11.

[0061] The circulating water inlet 113 and the water spraying port 114 are both located at the height of the water outlet 112, which can ensure that a portion of the defrost water will continue to be retained in the water storage tank 11, thereby ensuring that the defrost water that continues to flow down from the evaporation unit 16 forms brine in time to avoid freezing. In addition, the water spraying port 114 is located directly below the feeding port 111, which can ensure that the inorganic salts discharged from the feeding port 111 can be transported forward by the water spraying port 114 for a certain distance, thereby promoting the rapid dissolution of the inorganic salts, and avoiding the accumulation of the inorganic salts at the feeding port 111, which affects the subsequent inorganic salts from entering the water storage tank 11.

[0062] In some embodiments, the circulation mechanism 30 may be implemented as follows: Figure 6 See the structure shown. Figure 6 A nozzle is provided at the circulating water inlet 113 , and the nozzle diameter of the nozzle is small, which can ensure an increased flow rate of the water outlet, thereby more effectively impacting the inorganic salts and preventing the inorganic salts from accumulating below the feeding port 111 .

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air source heat pump capable of defrosting and melting ice, characterized in that: include: The unit body has an installation space, and has a water storage tank connected to the bottom end of the installation space, and the water storage tank is provided with a water outlet; an evaporation unit is provided in the installation space; the evaporation unit divides the installation space into an air outlet cavity and an air inlet cavity connected to the water storage tank; a support base is provided in the water storage tank for fixed connection to the bottom end of the evaporation unit, and the support base extends along the through direction of the water outlet, and divides the water storage tank into a first open cavity and a second open cavity; A dosing mechanism is fixedly mounted on the unit body and connected to a feed port arranged on the water storage tank, and is used for adding inorganic salts into the water storage tank according to the ambient temperature; the feed port is connected to the first open cavity, and the water outlet is connected to the second open cavity; a port connecting the two first open cavities and the second open cavity is provided at the end of the support seat away from the dosing mechanism; the dosing mechanism comprises a hopper, a material transfer pipeline, a medicine discharging component, a temperature sensor and a matching control module; the hopper is fixedly mounted on the unit body, and has a medicine discharging port at the bottom; one end of the material transfer pipeline is connected to the feed port; the medicine discharging component is located above the feed port, and the top end is connected to the medicine discharging port, and the bottom end is connected to the material transfer pipeline, and is used for controlling the inorganic salt in the hopper to quantitatively enter into the material transfer pipeline; the temperature sensor is arranged on the hopper, and is used for real-time detection of the ambient temperature; the control module is used for controlling the medicine discharging component according to the data of the temperature sensor, so as to adjust the amount of medicine discharged; A circulation mechanism, comprising a circulation pipeline and a circulation pump; one end of the circulation pipeline is connected to the first open cavity, and the other end is connected to the second open cavity; the circulation pump is arranged on the circulation pipeline, and is used to transport the saline in the second open cavity to the first open cavity for circulation; Among them, a circulating water inlet for connection to the circulating pipeline and a water spray outlet for connection to the circulating pipeline are provided on the side wall of the water storage tank; the heights of the circulating water inlet and the water spray outlet are lower than the height of the water outlet; the water spray outlet is located directly below the feeding port and at the bottom of the water storage tank.

2. The air source heat pump capable of achieving defrosting and ice melting as claimed in claim 1, characterized in that: An air outlet communicating with the air outlet cavity is provided at the top of the unit body, and a fan is provided at the air outlet; A plurality of air inlets are evenly distributed around the side wall of the unit body.

3. The air source heat pump capable of achieving defrosting and ice melting as claimed in claim 2, characterized in that: The evaporation unit is a V-shaped fin evaporator.

4. The air source heat pump capable of achieving defrosting and ice melting as claimed in claim 1, characterized in that: The medicine dispensing component comprises: A fixed cylinder, the axis of which is arranged in the horizontal direction, the fixed cylinder has a cylinder cavity, and the top end is provided with an inlet connected to the hopper, and the bottom end is provided with an outlet connected to the material transfer pipeline; A rotating shaft, coaxially rotatably connected to the fixed cylinder; There are at least four partition plates, each of which is arranged in the cylindrical cavity at an annular interval around the axis of the rotating shaft, one end of each partition plate is connected to the rotating shaft, and the other end extends along the radial direction of the rotating shaft and is in sliding contact with the inner wall of the cylindrical cavity; any two adjacent partition plates are enclosed with the inner wall of the cylindrical cavity to form a sub-cavity for storing inorganic salts; The servo motor is used to drive the rotating shaft to rotate.

5. The air source heat pump capable of achieving defrosting and ice melting as claimed in claim 1, characterized in that: The height of the feeding port is higher than the height of the water outlet.

6. The air source heat pump capable of achieving defrosting and ice melting as claimed in claim 1, characterized in that: A nozzle is arranged at the circulating water outlet.

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