Waste energy recovery device of air source heat pump

Abstract

The invention relates to the related technical field of waste heat recovery devices, in particular to a waste energy recovery device of an air source heat pump, which comprises a bottom plate, a waste heat storage frame is mounted on the bottom plate, a built-in heat storage cavity is arranged in the waste heat storage frame, and a water inlet pipe and an air inlet pipe are mounted on the outer wall of one side of the waste heat storage frame. An air outlet pipe and an air outlet pipe are installed on the outer wall of the other side of the waste heat storage frame, a heat exchange pipeline distributed in an S shape is arranged in the built-in heat storage cavity, the two ends of the heat exchange pipeline are connected with the water inlet pipe and the water outlet pipe correspondingly, a plurality of heat conduction plates are installed on the heat exchange pipeline, and one ends of the heat conduction plates extend to the inner periphery of the waste heat storage frame. Heat generated by the compressor in the waste heat storage frame is collected through the heat conducting plate, water in the heat exchange pipeline and air in the built-in heat storage cavity are heated through the heat conducting plate, the heated water can be used for water preheating work of a heat exchanger of a heat pump, and the heated air can be used for defrosting an inlet of an evaporator. And multifunctional utilization of waste heat is achieved, and the using effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of waste heat recovery devices, and specifically to a waste energy recovery device for an air source heat pump. Background Art

[0002] The waste energy recovery device of an air source heat pump is a device used to collect and utilize the waste heat generated by the heat pump system. The main function of the waste heat recovery device is to utilize the waste heat generated in the heat pump system to improve the energy utilization efficiency of the system. During the operation of the air source heat pump system, a certain amount of waste heat will be generated, mainly including the heat of the condenser and the compressor. The waste heat recovery device transfers the waste heat to other media through the heat exchanger installed in the heat pump system, such as the water in the heating system or the hot water storage tank.

[0003] However, during the use of the current air source heat pump, due to the periodic use of the equipment, excess heat is easily accumulated, but the current heat is wasted. Therefore, if a waste energy recovery device is set up, the energy conversion efficiency of the air source heat pump can be greatly improved. For this reason, those skilled in the art have proposed a waste energy recovery device for an air source heat pump to solve the problems raised in the above background. Summary of the Invention

[0004] The purpose of the present invention is to provide a waste energy recovery device for an air source heat pump to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A waste energy recovery device for an air source heat pump, including a bottom plate, and further including:

[0007] A waste heat storage frame, the bottom end of the waste heat storage frame is installed on the bottom plate, an internal heat storage cavity is arranged inside the waste heat storage frame, a water inlet pipe and an air inlet pipe are installed on one outer wall of the waste heat storage frame, an air outlet pipe and a water outlet pipe are installed on the other outer wall of the waste heat storage frame, the water inlet pipe, the air inlet pipe, the water inlet pipe and the water outlet pipe are all communicated with the bottom of the internal heat storage cavity, a notch is arranged on one side of the waste heat storage frame, and the notch is connected to the side part of the internal heat storage cavity;

[0008] A heat exchange pipe, the heat exchange pipe is arranged in an S shape in the internal heat storage cavity, both ends of the heat exchange pipe are respectively connected to one end of the water inlet pipe and one end of the water outlet pipe, and a distance is left between the outer wall of the heat exchange pipe and the inner wall of the internal heat storage cavity;

[0009] Heat conduction plate pieces, the number of the heat conduction plate pieces is set to be several, one end of each heat conduction plate piece is inserted and installed on the pipe body distributed along the width direction of the waste heat storage frame of the heat exchange pipe, and the other end of the heat conduction plate piece extends to the inner periphery of the waste heat storage frame;

[0010] A closing plate, which is detachably installed at the notch and used to close the notch.

[0011] As a further scheme of the present invention: slots are arranged on both sides of the heat exchange pipe, and one end of the heat conduction plate piece passes through the heat exchange pipe through the slots and abuts against the inner wall of the built-in heat storage cavity.

[0012] As a further scheme of the present invention: strip-shaped access grooves are arranged at the corresponding positions of the inner wall of the waste heat storage frame and the heat conduction plate pieces, the front ends of the strip-shaped access grooves extend to the front end of the waste heat storage frame, insertion pieces are arranged at the corresponding positions of the closing plate and the strip-shaped access grooves, and the sum of the lengths of the heat conduction plate pieces and the insertion pieces is equal to the length of the strip-shaped access grooves.

[0013] As a further scheme of the present invention: a number of grid holes are evenly arranged on the heat conduction plate pieces except for the parts placed in the strip-shaped access grooves and the slots.

[0014] As a further scheme of the present invention: a pressure stabilizing and communicating pipe is installed on one inner wall of the waste heat storage frame, a pressure automatic regulating component is installed at the bottom of the built-in heat storage cavity, and the heat exchange pipe, the air inlet pipe, the air outlet pipe, the water inlet pipe, the water outlet pipe, and the pressure stabilizing and communicating pipe are all arranged above the pressure automatic regulating component.

[0015] As a further scheme of the present invention: a pressure valve is installed in the pressure stabilizing and communicating pipe.

[0016] As a further scheme of the present invention: the pressure automatic regulating component includes a number of automatic telescopic rods installed on the inner bottom surface of the built-in heat storage cavity and a piston plate installed at the top ends of the automatic telescopic rods, and the outer wall of the piston plate is slidably attached to the inner wall of the built-in heat storage cavity.

[0017] The present invention has the following advantages: The device stores the heat generated by the compressor through the waste heat storage frame, utilizes the heat conduction plate and the heat exchange pipeline to realize the utilization of waste heat and the dual heating of water and air. By cooperating with the water inlet pipe, the water outlet pipe and the heat exchange pipeline, the heat exchange pipeline is connected between the external water inlet and the heat pump heat exchanger to realize the waste heat of cold water, thereby avoiding the direct heating of cold water by the heat pump heat exchanger, reducing the energy consumption of the heat pump heat exchanger, improving the energy-saving effect of the overall heat pump. The air inlet pipe is branched and connected to the air inlet of the heat pump. Air enters the built-in heat storage cavity for heating, and then the hot air is poured out through the air outlet pipe. The hot air is used to defrost the outdoor unit fins and the evaporator in the heat pump, ensuring the stable operation of the heat pump. The overall device has a simple structure and diverse functions, can recover and utilize the waste heat of multiple heat pump internal components including the compressor, and has a better use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a schematic diagram of the overall external structure of an embodiment of the present invention.

[0019] Figure 2 FIG. is a schematic diagram of the structure of the waste heat storage frame in an embodiment of the present invention.

[0020] Figure 3 FIG. is a schematic diagram of the structure of the closing plate in an embodiment of the present invention.

[0021] Figure 4 FIG. is a schematic diagram of the structure of the heat exchange pipeline in an embodiment of the present invention.

[0022] Figure 5 FIG. is a schematic diagram of the cooperation between the waste heat storage frame and the heat exchange pipeline in an embodiment of the present invention.

[0023] Figure 6 FIG. is a schematic diagram of the structure of the pressure automatic adjustment component in an embodiment of the present invention.

[0024] Figure 7 is Figure 2 an enlarged schematic diagram of part A in

[0025] In the figure: 1, bottom plate; 2, waste heat storage frame; 201, built-in heat storage cavity; 202, water inlet pipe; 203, water outlet pipe; 204, air inlet pipe; 205, air outlet pipe; 206, strip-shaped access slot; 207, pressure stabilizing communication pipeline; 208, notch; 3, heat exchange pipeline; 301, slot; 4, heat conduction plate; 401, mesh hole; 5, pressure automatic adjustment component; 501, piston plate; 502, automatic telescopic rod; 6, pressure valve; 7, closing plate; 701, insertion piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0029] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.

[0030] Embodiment 1: Please refer to Figures 1 to 7, A waste energy recovery device for an air source heat pump, comprising a bottom plate 1 which is installed in the heat pump by bolts. A waste heat storage frame 2 is fixedly connected to the top end of the bottom plate 1. The size of the waste heat storage frame 2 is set according to the size of the compressor or other components that need to recover and utilize waste heat. An internal heat storage cavity 201 is arranged inside the waste heat storage frame 2. A water inlet pipe 202 and an air inlet pipe 204 are installed on one outer wall of the waste heat storage frame 2, and an air outlet pipe 205 and a water outlet pipe 203 are installed on the other outer wall of the waste heat storage frame 2. The water inlet pipe 202, the air inlet pipe 204, the water inlet pipe 202 and the water outlet pipe 203 are all communicated with the bottom of the internal heat storage cavity 201. A notch 208 is arranged on one side of the waste heat storage frame 2, and the notch 208 is connected to the side part of the internal heat storage cavity 201. A heat exchange pipe 3 distributed in an S shape is arranged in the internal heat storage cavity 201. Two ends of the heat exchange pipe 3 are respectively connected to one end of the water inlet pipe 202 and one end of the water outlet pipe 203. A distance is left between the outer wall of the heat exchange pipe 3 and the inner wall of the internal heat storage cavity 201 to ensure smooth air circulation in the internal heat storage cavity 201. A number of heat conduction plate pieces 4 are installed on the heat exchange pipe 3. One end of the heat conduction plate piece 4 is inserted and installed on the pipe body of the heat exchange pipe 3 distributed along the width direction of the waste heat storage frame 2, and the other end of the heat conduction plate piece 4 extends to the inner periphery of the waste heat storage frame 2. The notch 208 is closed by a closing plate 7, and the outer shape and size of the closing plate 7 correspond to the shape and size of the waste heat storage frame 2.

[0031] Please refer to Figure 2 , Figure 4 , Figure 6, slots 301 are provided on both sides of the heat exchange pipe 3. One end of the heat conduction plate 4 passes through the heat exchange pipe 3 through the slot 301 and abuts against the inner wall of the built-in heat storage cavity 201. The outside of the connection between the heat conduction plate 4 and the slot 301 is sealed with sealing glue. Before installing the heat exchange pipe 3, a leak-proof test needs to be carried out to ensure that each insertion and installation point of the heat conduction plate 4 does not leak water. The heat exchange pipe 3 is routed in the horizontal and vertical directions and arranged in the way of "horizontal long and vertical short". The heat conduction plate 4 is inserted into the horizontally arranged part of the heat exchange pipe 3. Strip-shaped access grooves 206 are provided at the corresponding positions on the inner wall of the waste heat storage frame 2 corresponding to the heat conduction plate 4. The front end of the strip-shaped access groove 206 extends to the front end of the waste heat storage frame 2. Insert pieces 701 are provided at the corresponding positions on the closing plate 7 corresponding to the strip-shaped access grooves 206. The sum of the lengths of the heat conduction plate 4 and the insert piece 701 is equal to the length of the strip-shaped access groove 206. The heat exchange pipe 3 together with the heat conduction plate 4 is installed into the built-in heat storage cavity 201, and then the water inlet pipe 202 and the water outlet pipe 203 are screwed and installed at both ends of the heat exchange pipe 3 in a threaded connection manner. Structures for docking with the water inlet pipe 202 and the water outlet pipe 203 are provided at both ends of the heat exchange pipe 3. The heat conduction plate 4 is inserted into the corresponding strip-shaped access groove 206, and then the closing plate 7 is installed through bolts. The insert piece 701 is inserted into the notch 208 position of the strip-shaped access groove 206 to close the notch 208 of the strip-shaped access groove 206. A number of grid holes 401 are evenly arranged at equal intervals on the heat conduction plate 4 except for the parts placed in the strip-shaped access groove 206 and the slot 301. The heat conduction plate 4 is made of copper. The grid holes 401 can increase the contact surface between media such as water and air and it, thereby improving the heat conduction efficiency.

[0032] Embodiment 2: Refer to Figure 2 , Figure 6 , Figure 7 , on the basis of Embodiment 1, a pressure stabilizing and connecting pipe 207 is installed on one inner wall of the waste heat storage frame 2, a pressure automatic regulating component 5 is installed at the bottom of the built-in heat storage cavity 201, and the heat exchange pipe 3, the air inlet pipe 204, the air outlet pipe 205, the water inlet pipe 202, the water outlet pipe 203, and the pressure stabilizing and connecting pipe 207 are all arranged above the pressure automatic regulating component 5. A pressure valve 6 is installed in the pressure stabilizing and connecting pipe 207. The pressure valve 6 automatically opens when it is subjected to a certain intensity of pressure. When the pressure inside the periphery of the waste heat storage frame 2 is too high, a part of the air will be squeezed into the built-in heat storage cavity 201 through the pressure stabilizing and connecting pipe 207 to ensure the stability of the pressure inside the periphery of the waste heat storage frame 2.

[0033] Please refer to Figure 2 , Figure 6, the pressure automatic adjustment component 5 includes a plurality of automatic telescopic rods 502 installed on the inner bottom surface of the built-in heat storage cavity 201 and a piston plate 501 installed at the top end of the automatic telescopic rod 502. The outer wall of the piston plate 501 is in sliding fit with the inner wall of the built-in heat storage cavity 201. The automatic telescopic rod 502 is selected from a spring rod or a hydraulic rod with a function of resetting after expansion and contraction.

[0034] Working principle: During use, the bottom plate 1 is installed in the heat pump, and the compressor or other components that need to recover waste heat are installed in the waste heat storage frame 2. A controllable branch pipe is arranged at the cold water inlet of the heat pump and connected to the water inlet pipe 202. The water outlet pipe 203 is connected to the side of the inlet pipe of the heat pump heat exchanger and a control valve is arranged at the connection, so that the heat exchange pipeline 3 is in parallel with the water inlet pipeline of the heat pump heat exchanger. Furthermore, it is controlled that the cold water directly enters the heat pump heat exchanger or first passes through the heat exchange pipeline 3 and then enters the heat pump heat exchanger. A controllable branch pipe is arranged at the air inlet of the heat pump and connected to the air inlet pipe 204. The air outlet pipe 205 leads to the outdoor unit fin or evaporator through a pipeline. The heat around the waste heat storage frame 2 is absorbed by the heat conduction plate 4. When water is transported in the heat exchange pipeline 3, the water is heated through the heat conduction plate 4, so that the cold water is transported to the heat pump heat exchanger after passing through the waste heat, reducing the energy consumption of the heat pump heat exchanger. Air enters and exits the built-in heat storage cavity 201 through the air inlet pipe 204 and the air outlet pipe 205. The air is heated through the heat conduction plate 4 in the built-in heat storage cavity 201, and the hot air is introduced to the position where the outdoor unit fin or evaporator is located for defrosting treatment, realizing the full utilization of waste heat.

[0035] All of the components of the present invention are common standard parts or parts known to those skilled in the art. Their structures and principles can all be learned by those skilled in the art through technical manuals or through conventional experimental methods. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0036] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An energy recovery device for an air source heat pump, comprising a bottom plate (1), characterized in that, Further comprising: A waste heat storage box (2), the bottom end of the waste heat storage box (2) is installed on the bottom plate (1), an internal heat storage cavity (201) is arranged inside the waste heat storage box (2), a water inlet pipe (202) and an air inlet pipe (204) are installed on one outer wall of the waste heat storage box (2), an air outlet pipe (205) and a water outlet pipe (205) are installed on the other outer wall of the waste heat storage box (2), the water inlet pipe (202), the air inlet pipe (204), the water inlet pipe (202) and the water outlet pipe (203) are all communicated with the bottom of the internal heat storage cavity (201), a notch (208) is arranged on one side of the waste heat storage box (2), and the notch (208) is connected to the side of the internal heat storage cavity (201); A heat exchange pipe (3), the heat exchange pipe (3) is arranged in an S shape inside the internal heat storage cavity (201), two ends of the heat exchange pipe (3) are respectively connected to one end of the water inlet pipe (202) and one end of the water outlet pipe (203), and a distance is left between the outer wall of the heat exchange pipe (3) and the inner wall of the internal heat storage cavity (201); Heat conducting plate pieces (4), the number of the heat conducting plate pieces (4) is set to be several, one end of each heat conducting plate piece (4) is inserted and installed on the pipe body of the heat exchange pipe (3) distributed along the width direction of the waste heat storage box (2), and the other end of the heat conducting plate piece (4) extends to the inner periphery of the waste heat storage box (2); A closing plate (7), the closing plate (7) is detachably installed at the notch (208) and is used for closing the notch (208).

2. The waste energy recovery device of an air source heat pump according to claim 1, characterized in that, Slots (301) are arranged on both sides of the heat exchange pipe (3), and one end of the heat conducting plate piece (4) passes through the heat exchange pipe (3) through the slots (301) and abuts against the inner wall of the internal heat storage cavity (201).

3. The waste energy recovery device of an air source heat pump according to claim 2, wherein Strip-shaped access slots (206) are arranged at the corresponding positions of the inner wall of the waste heat storage box (2) and the heat conducting plate pieces (4), the front ends of the strip-shaped access slots (206) extend to the front end of the waste heat storage box (2), inserting pieces (701) are arranged at the corresponding positions of the closing plate (7) and the strip-shaped access slots (206), and the sum of the lengths of the heat conducting plate pieces (4) and the inserting pieces (701) is equal to the length of the strip-shaped access slots (206).

4. The waste energy recovery device of an air source heat pump according to claim 2, characterized in that, A plurality of grid holes (401) are evenly arranged at equal intervals on the heat conducting plate pieces (4) except for the parts placed in the strip-shaped access slots (206) and the slots (301).

5. The waste energy recovery device of an air source heat pump according to claim 1, characterized in that, A pressure stabilizing communication pipe (207) is installed on one inner wall of the waste heat storage box (2), a pressure automatic regulating component (5) is installed at the bottom of the internal heat storage cavity (201), and the heat exchange pipe (3), the air inlet pipe (204), the air outlet pipe (205), the water inlet pipe (202), the water outlet pipe (203), and the pressure stabilizing communication pipe (207) are all arranged above the pressure automatic regulating component (5).

6. The waste energy recovery device of an air source heat pump according to claim 5, characterized in that, A pressure valve (6) is installed inside the pressure stabilizing communication pipe (207).

7. The waste energy recovery device of an air source heat pump according to claim 5, characterized in that The pressure automatic adjustment component (5) includes a plurality of automatic telescopic rods (502) installed on the inner bottom surface of the built-in heat storage cavity (201) and a piston plate (501) installed at the top end of the automatic telescopic rod (502). The outer wall of the piston plate (501) is in sliding fit with the inner wall of the built-in heat storage cavity (201).

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