Heat pump easy to clean

Abstract

The utility model discloses a heat pump easy to clean. The heat pump easy to clean comprises a condenser, an expansion valve, an evaporator and a compressor which are sequentially connected along an annular path. Wherein the evaporator is arranged in the heat absorption chamber, and the evaporator comprises an evaporation pipe designed to be in a rectangular sheet body shape and a drainage disc arranged below the evaporation pipe; the heat absorption chamber is provided with a first air inlet formed in the side face and a first air outlet formed in the top face, and the evaporation pipe covers the first air inlet. A worker can directly wash the evaporator from the outer side through the first air inlet, so that dust on the surface of the evaporator is discharged along with sewage through the drainage disc, operation of other assemblies is not interfered in the period, and air inlet of the first air inlet and air exhaust of the first air outlet are not interfered either.

Description

Technical Field

[0001] The utility model relates to the field of heat pumps, in particular to a heat pump which is easy to clean. Background Art

[0002] A heat pump generally includes a condenser, an expansion valve, an evaporator and a compressor connected in sequence along a circular path. For a heat pump used in a drying tower, an air filter is generally installed at the air inlet of the condenser. The condenser is not easily attached with dust, while the evaporator is very easy to be attached with dust.

[0003] Existing heat pumps usually design the evaporator inside the shell of the heat pump, and the structure is compact, which makes it difficult for workers to clean the evaporator from the outside, and it is also difficult to remove the evaporator from the inside of the shell for cleaning. Utility Model Content

[0004] The utility model aims to provide a heat pump which is easy to clean, so as to solve the technical problem that the evaporator of the existing heat pump is difficult to clean.

[0005] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:

[0006] A heat pump that is easy to clean comprises a condenser, an expansion valve, an evaporator and a compressor that are sequentially connected along a circular path; wherein the evaporator is arranged inside a heat absorption chamber, the evaporator comprises an evaporation tube designed in a rectangular sheet shape, and a drain pan arranged below the evaporation tube; the heat absorption chamber has a first air inlet arranged on the side and a first air outlet arranged on the top surface, and the evaporation tube covers the first air inlet.

[0007] Furthermore, the first air inlet is symmetrically arranged on both sides of the heat absorption chamber, the two evaporation tubes are symmetrically arranged inside the heat absorption chamber and face one of the first air inlets respectively, the two evaporation tubes are arranged in a V shape in the cross section of the heat absorption chamber, and the first air outlet is arranged between the two evaporation tubes.

[0008] Furthermore, it also includes: a cleaning cover; the cleaning cover is detachably connected to the heat absorption chamber, and the cleaning cover extends upward along the edge of the drain pan to the top of the heat absorption chamber to cover the evaporation tube therein; the cleaning cover has two and covers two of the first air inlets respectively, and one of the cleaning covers is provided with an opening.

[0009] Furthermore, it also includes: a hanger; the hanger is fixedly connected to the top of the heat absorption chamber and the drain pan, and the cleaning cover is sleeved on the hanger.

[0010] Furthermore, the surface of the drain pan is arranged to be inclined, and a drain outlet is arranged at the lowest point of the surface of the drain pan.

[0011] Furthermore, a one-way valve covering the outside of the first air outlet is installed on the top of the heat absorption chamber.

[0012] Furthermore, the one-way valve includes two cover plates rotatably connected to the heat absorption chamber by hinges, and the cover plates are used to open when the first air outlet is discharging air, and to close when the first air outlet is not discharging air; the cover plates include upper and lower layers of metal plates and foam plates.

[0013] Furthermore, it also includes a dust cover, which is detachably covered on a side of the evaporator tube facing the outer side of the heat absorption chamber through an evaporator tube bracket; the evaporator tube bracket is provided with: a first slot for plugging the top of the dust cover; a second slot for plugging the bottom of the dust cover, and the second slot includes two sets of positioning columns arranged side by side.

[0014] Furthermore, it also includes: a frame; evaporating fins attached to the surface of the evaporating tube and used to increase the heat exchange area of ​​the evaporating tube; an electric control box with a built-in controller connected to the compressor for communication; an insect-proof cover detachably connected to the frame and covering the outside of the frame; an instrument fixedly connected to the frame and used to display the working conditions of the evaporator, the condenser and the compressor.

[0015] Furthermore, the condenser is arranged inside the heating chamber; the heating chamber includes: a second air inlet, arranged on the side of the heating chamber; a second air outlet, arranged on the front of the heating chamber; an installation port, arranged on the back of the heating chamber; a back plate, detachably connected to the heating chamber, used to cover the installation port, and the condenser is fixedly connected to the back plate.

[0016] Compared with the prior art, this application has the following beneficial effects:

[0017] Provided is a heat pump that is easy to clean. A worker can directly flush the evaporator from the outside through a first air inlet, so that dust on the surface of the evaporator is discharged through a drain pan along with sewage, without interfering with the operation of other components, and without interfering with the air intake of the first air inlet and the exhaust of the first air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] Figure 1A perspective view of a first embodiment of the present invention;

[0020] Figure 2 It is an assembly diagram of the first embodiment of the utility model;

[0021] Figure 3 It is a front view of the second and third embodiments of the utility model;

[0022] Figure 4 for Figure 3 Cross-sectional view in the AA direction;

[0023] Figure 5 This is a three-dimensional diagram of the second embodiment of the utility model after the insect-proof cover and the electric control box are removed;

[0024] Figure 6 It is an assembly diagram of the evaporator and the cleaning cover of the second embodiment of the utility model;

[0025] Figure 7 A three-dimensional diagram of the cleaning working state of the second embodiment of the utility model;

[0026] Figure 8 for Figure 3 Cross-sectional view in the BB direction;

[0027] Fig. 9 for Figure 3 The cross-sectional view in CC direction;

[0028] Fig.10 It is an assembly diagram of a heating chamber of a third embodiment of the utility model;

[0029] The numbers in the figure represent the following:

[0030] 1-frame; 11-electric control box; 12-insect-proof cover; 13-instrument; 2-heat absorption chamber; 21-first air inlet; 22-first air outlet; 23-check valve; 231-hinge; 232-cover plate; 233-metal plate; 234-foam plate; 3-evaporator; 31-evaporation tube; 32-drain pan; 321-drain outlet; 322-drain pipe; 33-evaporation tube bracket; 331-first slot; 3 32-second slot; 333-positioning column; 34-cleaning cover; 341-opening; 35-hanging fixture; 36-dust cover; 4-heating chamber; 41-second air inlet; 42-second air outlet; 43-installation port; 431-third slot; 432-fourth slot; 44-back plate; 45-protective element; 451-first baffle; 452-second baffle; 5-condenser; 51-condensing tube; 6-compressor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The heat pump comprises a condenser 5, an expansion valve, an evaporator 3 and a compressor 6 which are sequentially connected along a circular path, and the expansion valve is not shown in the figure.

[0033] The working principle of the heat pump is: the liquid refrigerant is depressurized after passing through the expansion valve and then enters the evaporator 3. The refrigerant in the evaporator 3 evaporates in a low-pressure environment and absorbs heat from an external low-temperature heat source. The gaseous refrigerant is then sent to the compressor 6 for compression. The temperature and pressure of the refrigerant increase significantly and then is sent to the condenser 5. The refrigerant in the condenser 5 releases heat and condenses into liquid. After that, the liquid refrigerant is again guided to the expansion valve to complete the cycle.

[0034] (First embodiment)

[0035] Figure 1 This is a three-dimensional diagram of a heat pump. Figure 2 This is the assembly diagram of the heat pump.

[0036] Combination Figure 1 , Figure 2 , the heat pump also includes:

[0037] The frame 1 includes an electric control box 11, a heat absorption chamber 2, and a heating chamber 4 arranged inside the frame;

[0038] A controller is installed inside the electric control box 11 and is communicatively connected to the compressor 6;

[0039] The insect-proof cover 12 is detachably connected to the frame 1 and covers the outer side of the frame 1;

[0040] The instrument 13 is fixedly connected to the frame 1 and is used to display the working conditions of the evaporator 3 , the condenser 5 and the compressor 6 .

[0041] Specifically, the rack 1 is a three-dimensional rectangular frame formed by welding steel pipes, the electric control box 11 and the instrument 13 are both arranged on the side of the rack 1, and the insect-proof cover 12 is arranged on the front and back of the rack 1. The insect-proof cover 12 is mainly used to prevent mosquitoes from entering the interior of the rack 1.

[0042] (Second embodiment)

[0043] Figure 3 This is the front view of the heat pump. Figure 4 yes Figure 3The cross-sectional view in the AA direction, Figure 5 is a three-dimensional diagram of a heat pump with the insect-proof cover 12 and the electric control box 11 removed, combined with Figure 3 , Figure 4 , Figure 5 .

[0044] The heat absorption chamber 2 is located at the upper layer of the frame 1 , the evaporator 3 is arranged in the heat absorption chamber 2 , and the heat absorption chamber 2 includes a first air inlet 21 arranged on the side and a first air outlet 22 arranged on the top surface.

[0045] A one-way valve 23 covering the outside of the first air outlet 22 is installed on the top of the heat absorption chamber 2. The one-way valve 23 includes two cover plates 232 rotatably connected to the heat absorption chamber 2 by hinges 231. The cover plates 232 are used to open when the first air outlet 22 is exhausting air, and to close when the first air outlet 22 is not exhausting air, so as to prevent condensed water from flowing into the interior of the heat absorption chamber 2 through the first air outlet 22.

[0046] The cover plate 232 includes an upper and lower layer of a metal plate 233 and a foam plate 234 . The foam plate 234 is used to cover the first air outlet 22 , and the metal plate 233 is used to increase the strength of the foam plate 234 and add weight to the foam plate 234 .

[0047] The evaporator 3 comprises:

[0048] The evaporation tube 31 is designed in the shape of a rectangular sheet and covers the first air inlet 21, and its two ends are respectively connected to the expansion valve and the compressor 6;

[0049] The evaporation fins (not shown) are attached to the surface of the evaporation tube 31 to increase the heat exchange area of ​​the evaporation tube 31;

[0050] The drain pan 32 is arranged below the evaporation tube 31 and is used to receive the condensed water on the evaporation tube 31 and the evaporation fins. The surface of the drain pan 32 is arranged obliquely. A drain port 321 is arranged at the lowest point of the surface of the drain pan 32. The drain port 321 is connected to a drain channel through a drain pipe 322. The drain channel is arranged on the ground.

[0051] The evaporation tube bracket 33 is fixedly connected to the frame 1 and is used to connect the evaporation tube 31 and the drain pan 32 .

[0052] Specifically, the first air inlet 21 is symmetrically arranged on both sides of the heat absorption chamber 2, the two evaporation tubes 31 are symmetrically arranged inside the heat absorption chamber 2 and face one first air inlet 21 respectively, the two evaporation tubes 31 are arranged in a V shape in the cross section of the heat absorption chamber 2, and the first air outlet 22 is arranged between the two evaporation tubes 31.

[0053] Figure 6 The assembly diagram of the evaporator 3 and the cleaning cover 34 is shown. Figure 7A three-dimensional view of the evaporator 3 wrapped by the cleaning cover 34 is shown. Figure 6 and Figure 7 .

[0054] In order to facilitate cleaning of the evaporation tube 31 and the evaporation fins, the evaporator 3 further includes:

[0055] The cleaning cover 34 is detachably connected to the heat absorption chamber 2 . The cleaning cover 34 extends upward along the edge of the drain pan 32 to the top of the heat absorption chamber 2 . The evaporation tube 31 and the evaporation fins are covered by the cleaning cover 34 and the evaporation tube bracket 33 .

[0056] The hanger 35 is fixedly connected to the evaporation tube bracket 33 and the edge of the drain pan 32 and is used to connect the cleaning cover 34 .

[0057] Specifically, the hanger 35 is a flange formed on the edges of the evaporating tube bracket 33 and the drain pan 32 , and an elastic band is connected to the edge of the cleaning cover 34 , and the cleaning cover 34 is sleeved on the hanger 35 through the elastic band.

[0058] The two cleaning covers 34 are respectively installed on both sides of the heat absorption chamber 2 and cover the two first air inlets 21 , and an opening 341 is provided on one of the cleaning covers 34 .

[0059] Combination Figure 7 The staff sprays high-pressure water into the interior of the heat absorption chamber 2 through the opening 341 on the cleaning cover 34 to clean the evaporation tube 31 and the evaporation fins. The water splashes onto the cleaning cover 34 and then falls naturally, and then flows along the drain pan 32 and the drain pipe 322 to the drain channel.

[0060] Combination Figure 2 , Figure 4 , Figure 5 The evaporator 3 further includes: a dust cover 36 detachably connected to the evaporation tube bracket 33 , covering a side of the evaporation tube 31 facing the outside of the heat absorption chamber 2 .

[0061] Before cleaning the evaporator tube 31 and the fins, the dust cover 36 needs to be removed. Specifically, the evaporator tube bracket 33 is provided with a first slot 331 and a second slot 332 . The first slot 331 is used to insert the top of the dust cover 36 , and the second slot 332 is used to insert the bottom of the dust cover 36 .

[0062] When removing the dust cover 36 , lift the dust cover 36 upward to separate the bottom of the dust cover 36 from the second slot 332 , then rotate and drag the bottom of the dust cover 36 outward to separate the top of the dust cover 36 from the first slot 331 .

[0063] To facilitate drainage, the second slot 332 is composed of two groups of positioning columns 333 arranged side by side, and water can flow smoothly through the gaps between the positioning columns 333 .

[0064] (Third Embodiment)

[0065] Figure 8 yes Figure 3 The cross-sectional view in the BB direction, Fig. 9 yes Figure 3 The cross-sectional view in the CC direction, Fig.10 This is the assembly drawing of the heating chamber 4, combined with Figure 8 , Fig. 9 , Fig.10 .

[0066] The heating chamber 4 is located at the lower layer of the frame 1, and the condenser 5 is arranged in the heating chamber 4. The heating chamber 4 includes:

[0067] The second air inlet 41 is arranged on the side of the heating chamber 4 and is covered with an air filter;

[0068] The second air outlet 42 is arranged on the front side of the heating chamber 4;

[0069] The installation opening 43 is arranged on the back of the heating chamber 4;

[0070] The back plate 44 is detachably connected to the heating chamber 4 and covers the installation opening 43 , and the condenser 5 is fixedly connected to the back plate 44 .

[0071] Specifically, the condenser 5 includes:

[0072] The condensation pipe 51 is vertically connected to the back plate 44 and suspended inside the heating chamber 4 .

[0073] Condensation fins (not shown) are attached to the surface of the condenser tube 51 to increase the heat exchange area of ​​the condenser tube 51 .

[0074] Combination Fig. 9 A third slot 431 and a fourth slot 432 are respectively provided at the upper and lower sides of the mounting opening 43 . The third slot 431 is used to insert into the top of the back plate 44 , and the fourth slot 432 is used to insert into the bottom of the back plate 44 .

[0075] Combination Fig.10 When removing the back plate 44, lift the back plate 44 upward to separate its bottom from the fourth slot 432, then rotate it outward and drag the bottom of the back plate 44 to separate its top from the third slot 431, and then remove the back plate 44 from the installation port 43, thereby removing the entire condenser 5 and the pipes connecting the compressor 6, which are easy to inspect and repair.

[0076] Combination Fig. 9 and Fig.10 A protective member 45 is detachably connected to one side of the back plate 44 facing the outside of the heating chamber 4. The protective member 45 is used to prevent the staff from contacting the back plate 44 and the pipelines on its surface to avoid the staff from being scalded.

[0077] The protective element 45 comprises:

[0078] A first baffle 451, parallel to the back plate 44;

[0079] The second baffle 452 is vertically and fixedly connected to the upper and lower sides of the first baffle 451 , and is vertically and detachably connected to the back plate 44 .

[0080] Combination Fig. 9 The protective member 45 is connected to the back plate 44 by bolts. When the staff inspects the condenser 5, they can lift the second baffle 452 to lift the back plate 44 and the condenser 5 together, so that the back plate 44 is separated from the installation opening 43.

[0081] (How a heat pump works)

[0082] The following uses the application of a heat pump to a drying tower as an example to illustrate the working principle of the above embodiment.

[0083] The first air inlet 21 and the second air inlet 41 are connected to the indoor room, the first air outlet 22 is connected to the outdoor room through the fan, and the second air outlet 42 is connected to the drying tower through the fan. The heat absorption chamber 2 sucks in air at room temperature through the first air inlet 21, and the air heated by the evaporator 3 is discharged to the outdoor room through the first air outlet 22. The heat pump transfers heat from the evaporator 3 of the heat absorption chamber 2 to the condenser 5 of the heating chamber 4, and the heating chamber 4 sucks in air at room temperature through the second air inlet 41, and the air heated by the condenser 5 is sent to the drying tower through the second air outlet 42.

[0084] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A heat pump that is easy to clean, characterized in that: It comprises a condenser (5), an expansion valve, an evaporator (3) and a compressor (6) which are sequentially connected along a circular path; in, The evaporator (3) is arranged inside the heat absorption chamber (2), and the evaporator (3) comprises an evaporation tube (31) designed in a rectangular sheet shape, and a drainage pan (32) arranged below the evaporation tube (31); The heat absorption chamber (2) is provided with a first air inlet (21) arranged on the side surface and a first air outlet (22) arranged on the top surface, and the evaporation tube (31) covers the first air inlet (21).

2. The easily cleanable heat pump according to claim 1, characterized in that: The first air inlet (21) is symmetrically arranged on both sides of the heat absorption chamber (2), the two evaporation tubes (31) are symmetrically arranged inside the heat absorption chamber (2) and respectively face one of the first air inlets (21), the two evaporation tubes (31) are arranged in a V-shape in a cross section of the heat absorption chamber (2), and the first air outlet (22) is arranged between the two evaporation tubes (31).

3. The easily cleanable heat pump according to claim 1, characterized in that: Also included: a cleaning cover (34); The cleaning cover (34) is detachably connected to the heat absorbing chamber (2), and the cleaning cover (34) extends upward along the edge of the drain pan (32) to the top of the heat absorbing chamber (2), covering the evaporation pipe (31) therein; The cleaning covers (34) are provided in two numbers and respectively cover the two first air inlets (21), wherein one of the cleaning covers (34) is provided with an opening (341).

4. The easily cleanable heat pump according to claim 3, characterized in that: Also includes: a hanger (35); The hanger (35) is fixedly connected to the top of the heat absorption chamber (2) and the drain pan (32), and the cleaning cover (34) is sleeved on the hanger (35).

5. The easily cleanable heat pump according to claim 1, characterized in that: The surface of the drain pan (32) is arranged obliquely, and a drain outlet (321) is arranged at the lowest point of the surface of the drain pan (32).

6. The easily cleanable heat pump according to claim 1, characterized in that: A one-way valve (23) is installed on the top of the heat absorption chamber (2) and covers the outside of the first air outlet (22).

7. The easily cleanable heat pump according to claim 6, characterized in that: The one-way valve (23) comprises two cover plates (232) rotatably connected to the heat absorption chamber (2) via hinges (231), and the cover plates (232) are used to open when the first air outlet (22) is exhausting air, and to close when the first air outlet (22) is not exhausting air; The cover plate (232) comprises an upper and lower metal plate (233) and a foam plate (234).

8. The easily cleanable heat pump according to claim 1, characterized in that: It also includes a dust cover (36), wherein the dust cover (36) is detachably covered on a side of the evaporation tube (31) facing the outside of the heat absorption chamber (2) through the evaporation tube bracket (33); The evaporation tube support (33) is provided with: A first slot (331) for plugging into the top of the dust cover (36); The second slot (332) is used for plugging into the bottom of the dust cover (36), and the second slot (332) includes two groups of positioning columns (333) arranged side by side.

9. The easily cleanable heat pump according to claim 1, characterized in that: Also includes: Rack (1); Evaporation fins are attached to the surface of the evaporation tube (31) and are used to increase the heat exchange area of ​​the evaporation tube (31); An electric control box (11) having a built-in controller that is communicatively connected to the compressor (6); An insect-proof cover (12) is detachably connected to the frame (1) and covers the outside of the frame (1); An instrument (13) is fixedly connected to the frame (1) and is used to display the operating conditions of the evaporator (3), the condenser (5) and the compressor (6).

10. The easily cleanable heat pump according to claim 1, characterized in that: The condenser (5) is arranged inside the heating chamber (4); The heating chamber (4) comprises: A second air inlet (41) is arranged on a side of the heating chamber (4); A second air outlet (42) is arranged on the front side of the heating chamber (4); A mounting opening (43) is arranged on the back side of the heating chamber (4); A back plate (44) is detachably connected to the heating chamber (4) and is used to cover the installation opening (43); the condenser (5) is fixedly connected to the back plate (44).

Images