Air source heat pump

Abstract

The utility model discloses an air source heat pump, which relates to the technical field of air source heat pumps and comprises a casing main body arranged on the outer side of a building wall, a front cover arranged on the front side of the casing main body, a top cover arranged on the upper side of the casing main body, an evaporator arranged on the rear side in the casing main body, and a lifting seat arranged on the inner bottom wall of the casing main body. The top of the lifting seat is connected with the bottom of the evaporator, a lifting gap is formed between the bottom of the evaporator and the inner bottom wall of the machine shell body, a water receiving disc is arranged in the lifting gap, an extension disc is arranged on the side portion of the water receiving disc and extends out of the side portion of the machine shell body, and the bottom of the extension disc is connected with a drainage pipe through a connecting pipe. The drainage pipe is connected with the outer side of the building wall. The service life of the casing main body can be prolonged, and the replacement and maintenance cost can be saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air source heat pump technical field, concretely relates to an air source heat pump. BACKGROUND

[0002] Air source heat pump is a kind of equipment using the heat in air to refrigerate or heat.

[0003] Air source heat pump is divided into outdoor and indoor two parts.Indoor part is hot end (such as radiator, floor heating, domestic hot water, etc.).Outdoor part refers to Figure 1 , including the shell main body 1 installed on the outer side of building wall, the front cover 3 is installed on the front side of shell main body 1, the top cover 4 is installed on the upper side of shell main body 1, the baffle 24 is installed in the inside of shell main body 1, the inside of shell main body 1 is separated into left side part and right side part by baffle 24, the rear side of left side part is installed with evaporator 5, the middle part of left side part is installed with fan frame 7, and the fan is installed on fan frame 7, and right side part is used to accommodate compressor, expansion valve, reversing valve and condenser and other equipment.

[0004] The working principle of air source heat pump when heating is to use inverse Carnot cycle, the refrigerant in evaporator absorbs the heat in air, under the action of compressor, the refrigerant is compressed and temperature rises, then enters condenser and is cooled, condenser transfers heat to indoor hot end, so that the refrigerant is cooled and liquefied, then the refrigerant enters expansion valve and is decompressed, the refrigerant becomes low-temperature and low-pressure gas, reenters evaporator and absorbs the heat in air again to circulate.

[0005] When the humidity of outdoor air increases, the moisture in outdoor air condenses into frost on the surface of evaporator, and the frost reduces the heat exchange capacity of evaporator, which affects the operation of air source heat pump.

[0006] Therefore, defrosting operation is needed. The conventional defrosting method is reverse defrosting method, that is, condenser absorbs heat, evaporator releases heat, so that the frost on the surface of evaporator melts into water, and the melted water accumulates in the inside of shell main body, so that the shell main body increases the risk of rusting due to long-term soaking in melted water, shortens the service life of shell main body and increases the cost of replacement and maintenance.

[0007] Therefore, how to prolong the service life of shell main body and save replacement and maintenance cost is a technical problem to be solved at present. UTILITY MODEL CONTENT

[0008] The utility model provides an air source heat pump, which can prolong the service life of shell main body and save replacement and maintenance cost.

[0009] In order to realize the above-mentioned purpose, the utility model adopts the technical scheme that

[0010] The utility model provides an air source heat pump, including the casing main part of building wall outside, the front side of casing main part is equipped with the front cover, the upper side of casing main part is equipped with the top cover, the inside rear side of casing main part is equipped with evaporator, the inner bottom wall of casing main part is equipped with the elevated seat, the top of elevated seat is connected with the bottom of evaporator, and the bottom of elevated seat and the bottom of casing main part are equipped with the elevated gap, and the water pan is equipped in the elevated gap, the side of water pan is equipped with the extension tray, and the extension tray stretches out from the side of casing main part, and the bottom of extension tray is connected with the drain pipe through the connecting pipe, and the drain pipe is connected with the outside of building wall.

[0011] Further, the bottom of the evaporator is provided with a mounting seat, a through hole is formed in the mounting seat, the top of the elevated seat is provided with an elevated screw, the elevated screw passes through the through hole upwardly, and an elevated nut is threadedly connected to the elevated screw, and the mounting seat is clamped between the elevated nut and the elevated seat.

[0012] Further, the water pan is made of plastic, and the connecting pipe and the drain pipe are made of plastic.

[0013] Further, the side of the casing main part is provided with an avoiding slot, and the extension tray is in interference fit with the avoiding slot.

[0014] Further, the connecting pipe comprises a first pipe body, a second pipe body and a third pipe body which are sequentially connected, the upper end of the first pipe body is connected with the extension tray, the first pipe body extends downwardly, the second pipe body extends along the direction close to the building wall, the third pipe body extends close to the drain pipe, and the end of the third pipe body is connected with the drain pipe.

[0015] Further, the bottom of the water pan is provided with a water outlet, and the water outlet is threadedly connected with the upper end of the first pipe body.

[0016] Further, the side of the drain pipe is provided with a receiving groove, the receiving groove is communicated with the drain pipe, the side of the receiving groove is provided with a slot, and the end of the third pipe body is in plug-in fit with the slot.

[0017] The utility model has the beneficial effect that:

[0018] 1. When the surface of the evaporator is frosted, the defrosting is carried out by using the reverse defrosting method, the frost on the surface of the evaporator is melted and flows downwardly into the water pan, the melted water entering the water pan is discharged through the water outlet at the bottom of the extension tray, the connecting pipe and the drain pipe in sequence, the risk of rusting of the casing main part due to long-term soaking in the melted water is reduced, the service life of the casing main part is prolonged, and the replacement and maintenance cost is saved.

[0019] 2. When multiple air source heat pumps are installed in the vertical direction on the outer side of a building wall, the arrangement of the connecting pipe and the drain pipe can guide the melted water to be discharged through the drain pipe, avoid the melted water of the air source heat pump located on the upper position from flowing to the air source heat pump located on the lower position, reduce the risk of rusting of the cabinet body of other air source heat pumps, avoid causing losses to other users, and be conducive to maintaining neighborhood harmony.

[0020] 3. By using a plastic disc as the water receiving disc and using a plastic pipe as the connecting pipe and the drain pipe, the advantages of light weight, low price, and no rusting are achieved, and maintenance costs can be saved.

[0021] 4. By means of the interference fit between the extension disc and the position avoiding groove, the water receiving disc can be prevented from moving inside the cabinet body, and the stability of the water receiving disc is improved.

[0022] 5. Because the second pipe body in the connecting pipe extends along the direction close to the building wall, the third pipe body in the connecting pipe can be arranged closer to the drain pipe arranged close to the wall, and the assembly of the connecting pipe and the drain pipe is facilitated.

[0023] 6. By threadedly connecting the first pipe body in the connecting pipe with the water outlet, and by plug-in fit of the end of the third pipe body in the connecting pipe with the insertion slot on the receiving groove in the drain pipe, the assembly of the connecting pipe with the water outlet and the drain pipe is facilitated, and no fasteners such as screws and bolts are needed for assembly, which is conducive to improving the assembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic diagram of the background art;

[0025] Figure 2 is an assembled perspective view of the water receiving disc and the connecting pipe;

[0026] Figure 3 is a split perspective view of the water receiving disc and the connecting pipe;

[0027] Figure 4 is a split perspective view of the drain pipe and the connecting pipe;

[0028] Figure 5 is an assembled perspective view of the drain pipe and the connecting pipe;

[0029] Figure 6 is an assembled perspective view of the cabinet body and the water receiving disc Figure 1 ;

[0030] Figure 7 is an enlarged view of part A in Figure 6 ;

[0031] Figure 8 is an assembled perspective view of the cabinet body and the water receiving disc Figure 2 ;

[0032] Figure 9 is an assembled perspective view of the casing body, the water pan and the evaporator;

[0033] Figure 10 is Figure 9 is a partial enlarged view at B in figure 1;

[0034] Figure 11 is Figure 9 is a partial enlarged view at C in figure 1;

[0035] Figure 12 is a perspective view of the air source heat pump without the drain pipe;

[0036] Figure 13 is a perspective view of the air source heat pump;

[0037] Figure 14 is a schematic view of the use of the air source heat pump.

[0038] BRIEF DESCRIPTION OF DRAWINGS

[0039] 1 - building wall,

[0040] 2 - casing body, 21 - support frame, 22 - lifting seat, 221 - lifting screw, 222 - lifting nut, 23 - avoiding slot, 24 - partition,

[0041] 3 - front cover,

[0042] 4 - top cover,

[0043] 5 - evaporator, 51 - mounting seat,

[0044] 6 - water pan, 61 - extension pan, 611 - water outlet,

[0045] 7 - fan frame,

[0046] 8 - drain pipe, 81 - receiving groove, 811 - insertion slot, 82 - clamp,

[0047] 9 - connecting pipe, 91 - first pipe body, 92 - second pipe body, 93 - third pipe body. DETAILED DESCRIPTION

[0048] In order to better understand the present application, the present application will be further described below in conjunction with the drawings. It should be noted that in the description of the present application, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0049] Embodiment:

[0050] An air source heat pump, see Figure 6 , comprising a casing body 2.

[0051] See Figure 14 , the casing body 2 is fixedly installed on the outer side of the building wall 1, specifically, the bottom of the casing body 2 is fixedly installed on the support frame 21 by bolts, and the side of the support frame 21 is fixedly installed on the outer side of the building wall 1 by bolts.

[0052] See Figure 14 , the front side of the casing body 2 is fixedly installed with a front cover 3 by screws, and the upper side of the casing body 2 is fixedly installed with a top cover 4 by screws. After the screws used to fix the top cover 4 and the front cover 3 are removed, the top cover 4 and the front cover 3 can be disassembled to expose the inside of the casing body 2 for maintenance.

[0053] See Figure 9 , the inside rear side of the casing body 2 is provided with an evaporator 5. See Figure 10 , the inner bottom wall of the casing body 2 is welded with a lifting seat 22, which is used to lift the evaporator 5 to form a lifting gap between the bottom of the evaporator 5 and the inner bottom wall of the casing body 2, and the inside of the lifting gap is used to accommodate a water pan 6, which is used to receive the melted water flowing down from the surface of the evaporator 5.

[0054] See Figure 10 , the frame bottom of the evaporator 5 is provided with a mounting seat 51, which is an integral structure with the frame bottom of the evaporator 5, and the mounting seat 51 is provided with a through hole. See Figure 7 and Figure 10 , the top of the lifting seat 22 is welded with a lifting screw 221, which passes through the through hole upward, and the lifting screw 221 is threadedly connected with a lifting nut 222, and the mounting seat 51 is clamped between the lifting nut 222 and the lifting seat 22.

[0055] When assembling the evaporator 5 and the lifting seat 22: first, align the through hole on the mounting seat 51 with the lifting screw 221; then, lower the evaporator 5, which drives the mounting seat 51 to move downward, so that the lifting screw 221 passes through the through hole; finally, screw the lifting nut 222 onto the lifting screw 221, and when the lifting nut 222 abuts against the top surface of the mounting seat 51, the mounting seat 51 is clamped by the lifting nut 222 and the lifting seat 22, and the assembly of the evaporator 5 and the lifting seat 22 is completed.

[0056] When the evaporator 5 and the lifting seat 22 are disassembled: first, the lifting nut 222 is unscrewed from the lifting screw 221; then, the evaporator 5 is lifted upwards, and the mounting seat 51 is moved upwards until the mounting seat 51 is separated from the lifting screw 221, so that the evaporator 5 and the lifting seat 22 are disassembled.

[0057] In the embodiment, the water pan 6 is made of plastic, which is light in weight and does not increase the load of the support frame 21; in addition, the plastic pan is low in price and does not rust, which can save maintenance costs. Referring to Figure 11 , the side of the main body 2 of the shell is provided with a position avoiding groove 23, and the side of the water pan 6 is provided with an extension disc 61, which is an integral structure with the water pan 6 and is in interference fit with the position avoiding groove 23. Referring to Figure 3 and Figure 11 , the bottom of the water pan 6 is provided with a water outlet 611. Through the interference fit of the extension disc 61 and the position avoiding groove 23, the water pan 6 can be prevented from moving inside the main body 2 of the shell, and the stability of the water pan 6 is improved.

[0058] Referring to Figure 14 , the drain pipe 8 is made of plastic and is located outside the building wall 1, and is fixedly installed outside the building wall 1 by a hoop 82. Referring to Figure 4 and Figure 5 , the side of the drain pipe 8 is welded and fixedly provided with a receiving groove 81, which is in communication with the drain pipe 8, and the side of the receiving groove 81 is provided with a slot 811.

[0059] Referring to Figures 2 to 5 , and Figure 12 and Figure 13 , the connecting pipe 9 is also made of plastic and includes a first pipe body 91, a second pipe body 92 and a third pipe body 93 which are sequentially in communication, the upper end of the first pipe body 91 is in threaded connection with the water outlet 611, the first pipe body 91 extends downward, the second pipe body 92 extends along the direction close to the building wall 1, the third pipe body 93 extends towards the direction close to the drain pipe 8, and the distal end of the third pipe body 93 is in plug-in fit with the slot 811.

[0060] The process of assembling the water pan 6, the evaporator 5, the connecting pipe 9 and the main body 2 of the shell in the embodiment is as follows:

[0061] (1) Align the extension disc 61 with the position avoiding groove 23, place the water pan 6 on the inner bottom wall of the main body 2 of the shell, and extrude the extension disc 61 into the position avoiding groove 23 on the side of the main body 2 of the shell.

[0062] (2) Align the through hole on the mounting seat 51 with the lifting screw 221; lower the evaporator 5, the evaporator 5 drives the mounting seat 51 to lower, so that the lifting screw 221 passes through the through hole; screw the lifting nut 222 on the lifting screw 221, when the lifting nut 222 abuts to the top surface of the mounting seat 51, the mounting seat 51 is clamped by the lifting nut 222 and the lifting seat 22, at this time, the evaporator 5 is located directly above the water pan 6.

[0063] (3) Screw the upper end of the first pipe body 91 in the connecting pipe 9 with the water outlet 611 of the extension disc 61.

[0064] The process of installing the air source heat pump of the embodiment on the outside of the building wall 1 is as follows:

[0065] (1) Fix the side of the support frame 21 on the outside of the building wall 1 by using the bolt; fix the drain pipe 8 on the outside of the building wall 1 by using the clamp 82.

[0066] (2) Place the air source heat pump of the embodiment on the support frame 21, so that the end of the third pipe body 93 in the connecting pipe 9 is inserted into the slot 811 on the receiving groove 81; then, fix the cabinet body 2 in the air source heat pump of the embodiment on the top of the support frame 21 by using the bolt.

[0067] The principle that the air source heat pump of the embodiment can reduce the risk of rust is as follows:

[0068] When the surface of the evaporator 5 is frosted, defrosting is performed by using the reverse defrosting method, the frost on the surface of the evaporator 5 melts and flows downward into the water pan 6, the melted water entering the water pan 6 is discharged through the water outlet 611 at the bottom of the extension disc 61, the connecting pipe 9 and the drain pipe 8 in turn, avoiding the accumulation of the melted water in the inside of the cabinet body 2, reducing the risk of rust of the cabinet body 2 due to long-term soaking in the melted water, being conducive to prolonging the service life of the cabinet body 2 and saving replacement and maintenance costs.

[0069] On the outside of the building wall 1, when multiple air source heat pumps are installed in the vertical direction, the arrangement of the connecting pipe 9 and the drain pipe 8 can guide the melted water to be discharged through the drain pipe 8, avoiding the melted water of the air source heat pump located higher to flow onto the air source heat pump located lower, reducing the risk of rust of the cabinet body 2 of other air source heat pumps, avoiding causing losses to other users, and being conducive to maintaining neighborhood harmony.

[0070] Because the second pipe body 92 in the connecting pipe 9 extends along the direction close to the building wall 1, the third pipe body 93 in the connecting pipe 9 can be arranged closer to the drain pipe 8 arranged close to the wall, facilitating the assembly of the connecting pipe 9 and the drain pipe 8.

[0071] By screwing the first pipe body 91 in the connecting pipe 9 with the water outlet 611, and inserting the end of the third pipe body 93 in the connecting pipe 9 into the insertion slot 811 on the receiving groove 81 in the drain pipe 8, the connecting pipe 9 can be assembled with the water outlet 611 and the drain pipe 8 conveniently, without using fasteners such as screws and bolts for assembly, which is beneficial to improve the assembly efficiency.

[0072] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. An air source heat pump comprising a casing main body provided on the outside of a building wall, a front cover provided on the front side of the casing main body, a top cover provided on the upper side of the casing main body, and an evaporator provided on the inside rear side of the casing main body, characterized in that, The inner bottom wall of the shell body is provided with a raised seat, the top of the raised seat is connected with the bottom of the evaporator, a raised gap is arranged between the bottom of the evaporator and the inner bottom wall of the shell body, a water collecting tray is arranged in the raised gap, the side of the water collecting tray is provided with an extension tray, the extension tray extends from the side of the shell body, the bottom of the extension tray is connected with a drain pipe through a connecting pipe, and the drain pipe is connected with the outside of the building wall.

2. An air source heat pump as claimed in claim 1, wherein, The bottom of the evaporator is provided with a mounting seat, the mounting seat is provided with a through hole, the top of the raised seat is provided with a raised screw rod, the raised screw rod penetrates the through hole upwards, and a raised nut is threadedly connected with the raised screw rod, and the mounting seat is clamped between the raised nut and the raised seat.

3. An air source heat pump as claimed in claim 1, wherein, The water collecting tray is made of a plastic tray, and the connecting pipe and the drain pipe are made of plastic pipes.

4. An air source heat pump as claimed in claim 1, wherein, The side of the shell body is provided with a position avoiding groove, and the extension tray is in interference fit with the position avoiding groove.

5. An air source heat pump as claimed in any one of claims 1 to 4, wherein, The connecting pipe comprises a first pipe body, a second pipe body and a third pipe body which are sequentially communicated, the upper end of the first pipe body is connected with the extension tray, the first pipe body extends downwards, the second pipe body extends along the direction close to the building wall, the third pipe body extends towards the direction close to the drain pipe, and the tail end of the third pipe body is connected with the drain pipe.

6. An air source heat pump as claimed in claim 5, wherein, The bottom of the water collecting tray is provided with a water outlet, and the water outlet is threadedly connected with the upper end of the first pipe body.

7. An air source heat pump as claimed in claim 5, wherein, The side of the drain pipe is provided with a receiving groove, the receiving groove is communicated with the drain pipe, the side of the receiving groove is provided with a slot, and the tail end of the third pipe body is in plug-in fit with the slot.

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