Heat pump water heater with low environment temperature

Abstract

The utility model discloses a low-environment-temperature heat pump water heater which comprises a bottom plate, an installation box is arranged on the bottom plate, a containing box is arranged on the installation box, a fan is arranged at the front end of the installation box, a filter screen frame is arranged in the containing box, a first opening is formed in one side of the containing box, a driving plate is arranged above the filter screen frame, a lifting assembly is arranged at the position of the containing box, and the movable end of the lifting assembly is connected with the driving plate. An electromagnetic attraction block and a magnetized attraction block are arranged on the opposite sides of the driving plate and the filter screen frame correspondingly, a push block is slidably arranged at the bottom end in the mounting box, a guide groove is formed in the side wall in the mounting box, the push block is movably connected with the guide groove, a connecting plate sleeves the movable rod, and a push rod rotationally connected with the connecting plate through a supporting plate is arranged in the containing box; a second opening is formed in the installation box, a third opening is formed in the side wall of the containing box, a baffle is arranged on the installation box in a sliding mode, the filter screen is used for a long time, manual replacement of workers is inconvenient, impurities accumulated between the draught fan and the filter screen are difficult to clean, and the filter screen can be conveniently replaced by the workers, and meanwhile the accumulated impurities are cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump water heaters, and particularly relates to a heat pump water heater with a low ambient temperature. Background Art

[0002] A heat pump water heater is an efficient heat energy boosting and transfer device based on the reverse Carnot cycle. It uses a small amount of electric energy as power, takes a refrigerant as a carrier, continuously absorbs low-grade heat energy in the air, converts it into available high-grade heat energy, and then releases the high-grade heat energy into the water to be heated to produce domestic hot water, which is then transported to users through hot water pipelines.

[0003] The Chinese utility model patent with the application number CN202020800788.5 discloses a new type of heat pump water heater with a low ambient temperature, including a bottom plate. On the top surface of the bottom plate, a fan installation box, a heating box, and a heat preservation box are fixedly connected in sequence from left to right. A fan is connected to the inner cavity of the fan installation box by screws. A filter screen is clamped at the connection between the fan installation box and the heating box. An oil tank is clamped at the top of the fan installation box. A heat dissipation window is opened on the outer top surface of the heating box. A cold water tank is arranged on the right side of the inner cavity of the heating box. A heat exchanger is connected to the bottom of the left side of the inner cavity of the heating box by screws. A compressor is clamped on the top of the heat exchanger. It has the advantages that the hot water can be kept warm, ensuring that hot water can flow out immediately when residents use it without being affected by electricity; when the fan sucks in external wind, small impurities can be effectively filtered to prevent small impurities from entering the compressor and the heat exchanger, causing malfunctions in their use.

[0004] However, after the filter screen has been used for a long time, too many impurities adhere to its surface, which easily affects the filtering effect and needs to be replaced. Personnel need to reach into the connection between the fan installation box and the heating box manually for replacement, which is inconvenient. Moreover, some impurities are likely to accumulate between the fan and the filter screen, and it is also very inconvenient for personnel to clean them manually. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a heat pump water heater with a low ambient temperature, which can facilitate personnel to replace the filter screen and at the same time facilitate the cleaning of impurities accumulated in the installation box.

[0006] The above technical object of the utility model is achieved through the following technical solutions: A heat pump water heater with a low ambient temperature, including a bottom plate, on which an installation box, a heating box and a heat preservation box are sequentially arranged. A blower is arranged on one side of the installation box away from the heating box. A receiving box is arranged on the installation box. A filter screen frame is slidably arranged in the receiving box. An opening one for the filter screen to enter and exit is arranged on one side of the filter screen frame. A through hole for the filter screen frame to enter and exit is opened on the installation box. A driving plate is arranged above the filter screen frame. A lifting component is arranged at the receiving box. The movable end of the lifting component is connected to the driving plate. The lifting component can be driven to move the driving plate along the height direction of the receiving box. Electromagnetic suction blocks and magnet-receiving blocks that are magnetically attracted to each other are respectively arranged on the opposite sides of the driving plate and the filter screen frame. A push block is slidably arranged at the bottom end inside the installation box. A guiding groove is opened on the inner side wall of the installation box along its length direction. The push block is movably connected to the guiding groove through a movable rod. A connecting plate is sleeved on the movable rod. A push rod is arranged inside the receiving box directly below the driving plate. One end of the push rod passes through the inside of the receiving box and is located inside the installation box. One end of it located inside the installation box is rotatably connected to the connecting plate through a support plate. An opening two is opened at the bottom end inside the installation box. An opening three is opened on the side wall of the receiving box. A baffle is slidably arranged at the opening three.

[0007] Preferably, the lifting component includes a motor arranged on the receiving box and a ball screw connected to its output shaft. One end of the ball screw penetrates into the inside of the receiving box. The driving plate is slidably connected to the ball screw.

[0008] Preferably, a first telescopic spring is sleeved on the outer wall of the push rod. One end of the first telescopic spring is connected to the bottom side inside the receiving box, and the other end of it is connected to the push rod.

[0009] Preferably, two groups of filter screen frames are provided, which are oppositely arranged at both ends inside the receiving box. The ball screw is located between the two groups of filter screen frames, and magnet-receiving blocks are arranged at both upper ends. Two groups of electromagnetic suction blocks are arranged on the driving plate and are magnetically attracted to the two groups of magnet-receiving blocks respectively.

[0010] Preferably, a storage box is arranged at the lower end of the installation box. The opening two is communicated with the inside of the storage box. A blocking block is slidably arranged at the opening two. A linkage plate is arranged on the side of the blocking block facing the storage box. One end of the linkage plate away from the blocking block penetrates into the inside of the installation box. One end of it located inside the installation box is inclined. A second telescopic spring is arranged on the linkage plate and is connected to the installation box.

[0011] Preferably, an opening four communicated with the storage box is opened at the bottom side inside the installation box. The length and width dimensions of the opening four are both smaller than the length and width dimensions of the push block.

[0012] Preferably, a cavity is formed inside the side wall of the installation box. The connecting plate is located inside the cavity. The guiding groove communicates with the cavity, and a guiding groove is arranged along the height of the installation box at one end of the guiding groove.

[0013] The beneficial effects of the present utility model are as follows: By providing a receiving box communicating with the installation box on the installation box, a filter screen frame that can slide in and out of the installation box is arranged in the receiving box. The moving component in the receiving box drives a driving plate. Electromagnetic suction blocks and magnet-receiving blocks that are magnetically attracted to each other are respectively arranged on the opposite sides of the driving plate and the filter screen frame, so as to drive the filter screen frame. An opening three is formed on the side wall of the receiving box, and a baffle is slidably arranged at the opening three. An opening one is formed on the filter screen frame. There is no need for personnel to reach into the installation box to take and replace the filter screen, reducing certain safety hazards. Compared with the prior art, by arranging a push block at the bottom end inside the installation box and forming an opening two at the same time, when the driving plate moves downward, the connecting plate can be indirectly pressed downward through a push rod, so that the push rod slides along the guiding of the guiding groove inside the installation box to push the impurities at the bottom end inside the installation box, and the impurities are sent out through the opening two, reducing the accumulation of impurities inside the installation box. There is no need for personnel to clean manually, which is convenient and fast, and reduces the labor intensity of personnel. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram for showing some mechanisms on the bottom plate in an embodiment of the present utility model;

[0015] Figure 2 It is a schematic diagram for separately showing some structures of the installation box and the receiving box in an embodiment of the present utility model;

[0016] Figure 3 It is Figure 2 a sectional view taken along the A-A direction in

[0017] Figure 4 It is Figure 3 an enlarged view of part B in

[0018] Figure 5 It is an exploded view for showing some structures on the installation box in an embodiment of the present utility model;

[0019] Figure 6 It is Figure 5 an enlarged view of part C in

[0020] Reference numerals: 1, bottom plate; 2, mounting box; 3, heating box; 4, insulation box; 5, accommodating box; 6, filter screen frame; 7, first opening; 8, filter screen; 9, through hole; 10, driving plate; 11, electromagnetic suction block; 12, magnetically attracted block; 13, pushing block; 14, guiding groove; 15, movable rod; 16, connecting plate; 17, push rod; 18, support plate; 19, second opening; 20, baffle; 21, third opening; 22, motor; 23, ball screw; 24, first telescopic spring; 25, storage box; 26, stop block; 27, linkage plate; 28, second telescopic spring; 29, fourth opening; 30, guiding groove; 31, fan. Detailed implementation manner

[0021] The following is only the preferred implementation manner of the present invention, and the protection scope is not limited to this embodiment. Any technical solutions falling within the idea of the present invention shall belong to the protection scope of the present invention. At the same time, it should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

[0022] It should be noted that in this article, relational terms such as first and second, such as "connecting plate one, connecting plate two", etc., are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0023] The orientation terms mentioned in this embodiment, such as "up, down, left, right", etc., are only used to assist those skilled in the art in this technical field to understand the connection between each feature or part, etc. with the help of each drawing.

[0024] In this embodiment, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] Such as Figures 1 to 6As shown in the figure, a heat pump water heater with a low ambient temperature includes a bottom plate 1. An installation box 2, a heating box 3, and a heat preservation box 4 are arranged on the bottom plate 1 from right to left. A fan 31 is arranged on one side of the installation box 2 away from the heating box 3. A receiving box 5 is arranged on the upper side of the installation box 2. A notch (not marked in the attached drawing) communicating with the inside is opened on the lower side of the receiving box 5. A filter screen frame 6 is slidably arranged in the receiving box 5. The filter screen frame 6 is arranged vertically. An opening 7 for the filter screen 8 to enter and exit is opened on one side thereof. In this embodiment, two groups of filter screen frames 6 are arranged opposite to each other. A driving plate 10 is arranged directly above the filter screen frame 6 inside the receiving box 5. A motor 22 is arranged on the upper side of the outer wall of the receiving box 5. The output shaft of the motor 22 is connected to a ball screw 23. The ball screw 23 is arranged vertically inside the receiving box 5 and is located between the two groups of filter screen frames 6. A magnetic receiving block 12 is arranged on the upper side of the filter screen frame 6. An electromagnetic suction block 11 magnetically matched with the magnetic receiving block 12 is arranged on the lower side of the driving plate 10. An opening 21 is opened on the side wall of the receiving box 5. A baffle 20 is slidably arranged at the opening 21.

[0026] A push block 13 slides horizontally at the bottom end inside the installation box 2. The push block 13 is arranged along the length direction of the installation box 2. An opening 19 is opened on the side of the bottom end inside the installation box 2 facing the fan 31. A long guiding groove 14 is opened on the inner side wall of the installation box 2 along its length direction. The push block 13 is movably connected to the guiding groove 14 through a movable rod 15. Its moving mode is that the movable rod 15 can be driven to slide along the length direction of the guiding groove 14. A connecting plate 16 is sleeved on the movable rod 15. In this embodiment, the movable rod 15 is rotatably connected to the connecting plate 16. Push rods 17 are arranged opposite to each other left and right directly below the driving plate 10 inside the receiving box 5. The push rods 17 are arranged vertically. In this embodiment, the upper ends of the two groups of push rods 17 are connected by a cross plate (not marked in the attached drawing). The lower ends of the push rods 17 pass through the inside of the receiving box 5 and are located inside the installation box 2. And the ends located inside the installation box 2 are rotatably connected to the connecting plate 16 through a support plate 18. It should be noted that in this embodiment, a connecting cross plate (not marked in the attached drawing) is arranged between the lower end of the push rod 17 and the support plate 18 for connection. A first telescopic spring 24 is sleeved on the outer wall of the push rod 17. One end of the first telescopic spring 24 is connected to the bottom side inside the receiving box 5, and the other end is connected to the outer wall of the upper end of the push rod 17.

[0027] A storage box 25 is arranged at the lower end of the installation box 2. The opening 19 communicates with the inside of the storage box 25. A blocking block 26 slides up and down at the opening 19. A U-shaped linkage plate 27 is arranged on the side of the blocking block 26 facing the storage box 25. One end of the linkage plate 27 away from the blocking block 26 penetrates into the inside of the installation box 2, and the end located inside the installation box 2 is arranged obliquely. It should be noted that its inclined surface is on the side away from the fan 31. A second telescopic spring 28 is arranged on the end of the linkage plate 27 located outside the installation box 2 and is connected to the outer wall of the installation box 2.

[0028] At the inner bottom side of the installation box 2, an opening four 29 communicating with the storage box 25 is provided between two groups of filter screen frames 6. The length and width dimensions of the opening four 29 are both smaller than those of the push block 13.

[0029] A cavity is provided inside the side wall of the installation box 2. The connecting plate 16 is located inside the cavity. The guiding groove 14 communicates with the cavity, and a guiding groove 30 is provided along the height of the installation box 2 at one end of the guiding groove 14 far away from the fan 31.

[0030] It should be noted that in this embodiment, the length dimension of the push block 13 is the same as the dimension of the closest distance between two groups of filter screen frames 6. When the filter screen frame 6 moves down into the installation box 2, the distance between its lower end and the inner bottom side of the installation box 2 is the same as the height dimension of the push block 13. The purpose is to block the gap between the lower end of the filter screen frame 6 and the inner bottom side of the installation box 2 by the push block 13 without affecting the movement of the push block 13.

[0031] When a person uses the filter screen frame 6, as Figures 1 to 4 shown, one group of filter screen frames 6 is located inside the accommodation box 5, the other group is located inside the installation box 2, the push block 13 is located between two groups of filter screen frames 6, the motor 22 is in a power-off state, the driving plate 10 is located at the upper end of the ball screw 23, the second telescopic spring 28 is in an extended state, and one end of the linkage plate 27 with an inclined surface is located inside the installation box 2. An unused filter screen 8 can be placed inside the filter screen frame 6 located inside the accommodation box 5, and the magnetic receiving block 12 on the filter screen frame 6 located inside the accommodation box 5 is magnetically coupled with the electromagnetic suction block 11 on the driving plate 10 and is limited inside the accommodation box 5.

[0032] When a person needs to replace the used filter screen 8 inside the installation box 2, first, the fan 31 pauses, and the motor 22 is controlled by the control system to drive the ball screw 23. The ball screw 23 moves the filter screen frame 6 located inside the accommodation box 5 down into the installation box 2 through the driving plate 10. Then, the magnetic receiving block 12 on the original filter screen frame 6 located inside the installation box 2 is magnetically coupled with the electromagnetic suction block 11 on the driving plate 10, and the magnetic receiving block 12 on the filter screen frame 6 entering the installation box 2 is no longer magnetically attracted by the electromagnetic suction block 11. Then, the motor 22 rotates in reverse, and the driving plate 10 is indirectly driven to move up and reset, so as to replace the filter screen frame 6 from the installation box 2. The person can pull the baffle 20 to take out the filter screen 8 inside the filter screen frame 6 inside the accommodation box 5 for replacement without reaching into the installation box 2, which is more convenient for replacement and reduces certain safety hazards.

[0033] Meanwhile, during the downward movement of the driving plate 10, the push rod 17 will be pressed downward, causing the push rod 17 to move downward. The push rod 17 pushes the support plate 18, and the connection between the support plate 18 and the connecting plate 16 moves downward under the guidance of the guiding groove 30. The connecting plate 16 also starts to push the push block 13 to slide along the length direction of the guiding groove 14 through the movable rod 15, and begins to push the impurities at the inner bottom end of the installation box 2, and approaches the linkage plate 27 during the movement, pressing it downward, so that the stopper 26 moves downward synchronously and no longer blocks the second opening 19. The pushed impurities enter the interior of the storage box 25 through the second opening 19. When the driving plate 10 moves upward, the push block 13 will also be indirectly driven to move back. During the backward movement, the impurities on the other side of the push block 13 are pushed into the fourth opening 29.

[0034] The above embodiments are illustrative of the present invention and not restrictive thereof. Any simple transformation of the present invention shall fall within the protection scope of the present invention.

Claims

1. A low ambient temperature heat pump water heater, comprising a bottom plate (1), on which an installation box (2), a heating box (3) and a heat preservation box (4) are sequentially arranged. It is characterized in that A blower (31) is arranged on one side of the installation box (2) away from the heating box (3). A receiving box (5) is arranged on the installation box (2). A filter screen frame (6) is slidably arranged in the receiving box (5). An opening one (7) for the filter screen (8) to enter and exit is arranged on one side of the filter screen frame (6). A through hole (9) for the filter screen frame (6) to enter and exit is opened on the installation box (2). A driving plate (10) is arranged above the filter screen frame (6). A lifting assembly is arranged at the receiving box (5). The movable end of the lifting assembly is connected to the driving plate (10). The lifting assembly can be driven to move the driving plate (10) along the height direction of the receiving box (5). Electromagnetic suction blocks (11) and magnet-receiving blocks (12) which are magnetically attracted to each other are respectively arranged on the opposite sides of the driving plate (10) and the filter screen frame (6). A push block (13) is slidably arranged at the bottom end inside the installation box (2). A guiding groove (14) is opened on the inner side wall of the installation box (2) along its length direction. The push block (13) is movably connected to the guiding groove (14) through a movable rod (15). A connecting plate (16) is sleeved on the movable rod (15). A push rod (17) is arranged inside the receiving box (5) directly below the driving plate (10). One end of the push rod (17) penetrates out of the receiving box (5) and is located inside the installation box (2). The end of the push rod (17) located inside the installation box (2) is rotatably connected to the connecting plate (16) through a support plate (18). An opening two (19) is opened at the bottom end inside the installation box (2). An opening three (21) is opened on the side wall of the receiving box (5). A baffle (20) is slidably arranged at the opening three (21).

2. The low ambient temperature heat pump water heater according to claim 1, characterized in that, The lifting assembly includes a motor (22) arranged on the receiving box (5) and a ball screw (23) connected to its output shaft. One end of the ball screw (23) penetrates into the receiving box (5) internally. The driving plate (10) is slidably connected to the ball screw (23).

3. The low ambient temperature heat pump water heater according to claim 1, wherein A first telescopic spring (24) is sleeved on the outer wall of the push rod (17). One end of the first telescopic spring (24) is connected to the bottom side inside the receiving box (5), and the other end is connected to the push rod (17).

4. The low ambient temperature heat pump water heater according to claim 2, characterized in that, Two groups of filter screen frames (6) are arranged at both ends inside the receiving box (5) oppositely. The ball screw (23) is located between the two groups of filter screen frames (6), and magnet-receiving blocks (12) are arranged at both upper ends. Two groups of electromagnetic suction blocks (11) are arranged on the driving plate (10) and are magnetically attracted to the two groups of magnet-receiving blocks (12) respectively.

5. A low ambient temperature heat pump water heater according to claim 1, characterized in that, A storage box (25) is provided at the lower end of the installation box (2). The second opening (19) communicates with the interior of the storage box (25). A stopper (26) is slidably provided at the second opening (19). A linkage plate (27) is provided on one side of the stopper (26) facing the storage box (25). One end of the linkage plate (27) away from the stopper (26) penetrates into the interior of the installation box (2), and the end thereof located inside the installation box (2) is inclined. A second telescopic spring (28) is provided on the linkage plate (27) and connected to the installation box (2).

6. The low ambient temperature heat pump water heater according to claim 5, characterized in that, A fourth opening (29) communicating with the storage box (25) is formed in the bottom side inside the installation box (2). The length and width dimensions of the fourth opening (29) are both smaller than the length and width dimensions of the push block (13).

7. The low ambient temperature heat pump water heater according to claim 1, wherein A cavity is formed inside the side wall of the installation box (2). The connecting plate (16) is located inside the cavity. The guiding groove (14) communicates with the cavity, and a guiding groove (30) is provided along the height of the installation box (2) at one end of the guiding groove (14).

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