Dehumidification heat pump with freeze protection

Abstract

This utility model relates to a dehumidifying heat pump, particularly a dehumidifying heat pump with antifreeze protection. It includes a housing, inside which a surface cooler and a controller are installed. A hot air device is also installed inside the housing and is communicatively connected to the controller. This utility model, by installing a hot air device inside the housing and communicating with the controller, circulates the hot air generated by the hot air device within the housing, increasing the internal temperature and preventing residual water from freezing and causing ice explosions in components such as the surface cooler, thus providing antifreeze protection.

Description

Technical Field

[0001] This utility model relates to a dehumidifying heat pump, and more particularly to a dehumidifying heat pump with antifreeze protection. Background Technology

[0002] As a relatively large commercial unit, dehumidifying heat pump units consume a lot of electricity when they are working. Therefore, in order to respond to the national call for energy conservation and emission reduction, indoor swimming pool venues will shut down the units during off-peak hours to reduce energy consumption.

[0003] However, in some northern regions where winter temperatures can drop below freezing, some users forget to drain residual water from the water cooler or pool water heat exchanger when shutting down their devices, causing components to freeze and burst. If this happens, repairs take a considerable amount of time, and replacements negatively impact the customer experience.

[0004] A swimming pool-specific dehumidifying heat pump with air quality detection, as disclosed in patent announcement number CN216592016U, includes a housing. The top of the housing is provided with a return air inlet, an exhaust air inlet, a fresh air inlet, and a supply air inlet. Inside the housing, a return air fan, an air quality detection probe, an exhaust section, a fresh air section, an evaporator, a condenser, a surface cooler, a supply air fan, and a control box are arranged in sequence.

[0005] In the aforementioned technologies, the casing lacks an antifreeze protection structure. When the external temperature reaches below zero, the water remaining in the surface cooler can freeze, easily causing the components to explode.

[0006] Therefore, there is an urgent need for a dehumidifying heat pump with antifreeze protection. Utility Model Content

[0007] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a dehumidifying heat pump with antifreeze protection.

[0008] The technical solution adopted by this utility model to solve the problem is: a dehumidifying heat pump with antifreeze protection, including a housing, a surface cooler and a controller installed in the housing, a hot air device installed in the housing, and the hot air device being communicatively connected to the controller.

[0009] As a further improvement to the above technical solution, the hot air device includes a PTC electric heater and a fan.

[0010] As a further improvement to the above technical solution, the hot air device also includes a mounting bracket, the top of which is provided with a mounting hole, the PTC electric heater is mounted on the mounting hole, the fan is mounted below the mounting hole, and the air supply end of the fan faces the mounting hole.

[0011] As a further improvement to the above technical solution, a heat exchanger is also installed inside the box, and the hot air device is located near the heat exchanger and the surface cooler.

[0012] As a further improvement to the above technical solution, a first temperature sensor and a second temperature sensor are respectively provided on the surface cooler and the heat exchanger, and the first temperature sensor and the second temperature sensor are communicatively connected to the controller.

[0013] As a further improvement to the above technical solution, a third temperature sensor is installed outside the box to detect the external air temperature.

[0014] As a further improvement to the above technical solution, a return air fan and a supply air fan are also installed inside the housing. There is a cavity between the supply air fan and the surface cooler, and the heat exchanger and the hot air device are both located inside the cavity.

[0015] The beneficial effects of this utility model are: by installing a hot air device inside the box, which is connected to the controller, the hot air generated by the hot air device circulates inside the box, increasing the temperature inside the box and preventing residual water from freezing and causing ice explosions of components such as the surface cooler, thus playing a role in antifreeze protection. Attached Figure Description

[0016] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall rear structure of the present invention;

[0019] Figure 3 This is a structural anatomical view of the hot air device of this utility model;

[0020] In the diagram: 1-box, 10-cavity, 11-air supply outlet, 12-fresh air inlet, 13-exhaust outlet, 14-return air inlet, 15-air supply fan, 16-return air fan, 17-surface cooler, 18-heat exchanger, 19-controller, 2-hot air device, 21-PTC electric heater, 22-fan, 23-mounting bracket, 231-mounting hole. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] Reference Figures 1 to 3 A dehumidifying heat pump with antifreeze protection includes a housing 1. The top of the housing 1 is equipped with an air supply vent 11, a fresh air inlet 12, an exhaust vent 13, and a return air inlet 14. A surface cooler 17 and a controller 19 (also known as a control box) are installed inside the housing 1. A hot air device 2 is also installed inside the housing 1 and is communicatively connected to the controller 19. When the temperature of the surface cooler 17 or other components requiring protection is below 5 degrees Celsius (the specific temperature can be set according to actual conditions), the controller 19 outputs a signal, controlling the AC contactor to engage and thus controlling the start and stop of the hot air device 2, in conjunction with the start and stop status of the unit's water pump (if the water pump is running, the hot air device 2 does not need to be turned on). After the hot air device 2 is turned on, hot air circulation is formed inside the housing 1, increasing the internal temperature of the housing 1 and preventing residual water from freezing and causing the surface cooler 17 and other components to explode, thus providing antifreeze protection.

[0025] In a preferred embodiment, the hot air device 2 includes a PTC electric heater 21 and a fan 22. The PTC electric heater 21 has the characteristic of automatic temperature control, and can automatically adjust the power after reaching the set temperature to maintain a constant temperature, avoiding the risk of overheating and fire. In addition, the thermal efficiency of the PTC heater is as high as 99%, and it can automatically adjust the power during use, which is highly efficient and energy-saving. PTC electric heaters also have the characteristics of long life, wide application range, and high safety. The fan 22 adopts a combination of shaded pole motor and metal fan blades. This fan 22 has a simple structure, stable operation, high reliability, low noise and low vibration, and low cost.

[0026] In a preferred embodiment, the hot air device 2 is installed at the bottom of the housing 1. The hot air device 2 also includes a mounting bracket 23, which is a sheet metal part. The top of the mounting bracket 23 is provided with a mounting hole 231. The PTC electric heater 21 is installed on the mounting hole 231, and the fan 22 is installed below the mounting hole 231. The air delivery end of the fan 22 faces the mounting hole 231 (or upwards). The hot air device 2 of this utility model adopts a unique compact and flexible design, with a specially designed small square shape, which ensures installation space without affecting the placement and maintenance space of other components. The PTC electric heating components can be modularly and freely combined according to different housing sizes to adapt to units of various sizes.

[0027] In a preferred embodiment, a heat exchanger 18 is also installed inside the housing 1, and the hot air device 2 is adjacent to the heat exchanger 18 and the surface cooler 17, thereby enabling the hot air device 2 to protect the heat exchanger 18 and the surface cooler 17 at the same time.

[0028] In a preferred embodiment, a first temperature sensor and a second temperature sensor are respectively installed on the surface cooler 17 and the heat exchanger 18. The first and second temperature sensors are communicatively connected to the controller 19. A third temperature sensor is installed outside the housing 1 to detect the external air temperature. Real-time data on the temperature of the metal contact surface and the ambient temperature are collected. The controller 19 adjusts the start and stop of the hot air device 2 by comparing it with a preset temperature threshold. When the temperature at any monitoring point approaches the freezing point, the hot air device 2 is automatically triggered to start until the temperature inside the housing 1 stabilizes within a safe range. By setting multiple temperature sensors to detect the temperature at specific locations, the on / off state of the hot air device 2 is controlled based on the temperature at those locations, thus timely adjusting the internal temperature of the dehumidifying heat pump unit housing 1 and reducing the occurrence of component damage. This technology employs intelligent control, improving the ease of use of the unit and enhancing the stability and reliability of the dehumidifying heat pump unit.

[0029] In some embodiments, a return air fan 16 and a supply air fan 15 are also installed inside the housing 1. A cavity 10 is provided between the supply air fan 15 and the surface cooler 17. The heat exchanger 18 and the hot air device 2 are both located inside the cavity 10, so that the heat energy generated by the PTC electric heater 21 is evenly distributed to the core component area of ​​the unit.

[0030] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A dehumidifying heat pump with antifreeze protection, comprising a housing (1), wherein a surface cooler (17) and a controller (19) are installed inside the housing (1), characterized in that: A hot air device (2) is installed inside the housing (1), and the hot air device (2) is communicatively connected to the controller (19).

2. A dehumidifying heat pump with antifreeze protection as described in claim 1, characterized in that: The hot air device (2) includes a PTC electric heater (21) and a fan (22).

3. A dehumidifying heat pump with antifreeze protection as described in claim 2, characterized in that: The hot air device (2) also includes a mounting bracket (23), the top of which is provided with a mounting hole (231). The PTC electric heater (21) is mounted on the mounting hole (231), and the fan (22) is mounted below the mounting hole (231), with the air supply end of the fan (22) facing the mounting hole (231).

4. A dehumidifying heat pump with antifreeze protection as described in claim 1, characterized in that: A heat exchanger (18) is also installed inside the housing (1), and the hot air device (2) is adjacent to the heat exchanger (18) and the surface cooler (17).

5. A dehumidifying heat pump with antifreeze protection as described in claim 4, characterized in that: The surface cooler (17) and the heat exchanger (18) are respectively equipped with a first temperature sensor and a second temperature sensor, and the first temperature sensor and the second temperature sensor are communicatively connected to the controller (19).

6. A dehumidifying heat pump with antifreeze protection as described in claim 5, characterized in that: A third temperature sensor is installed outside the housing (1) to detect the external air temperature.

7. A dehumidifying heat pump with antifreeze protection as described in claim 4, characterized in that: The housing (1) is also equipped with a return air fan (16) and a blower (15). There is a cavity (10) between the blower (15) and the surface cooler (17). The heat exchanger (18) and the hot air device (2) are both located in the cavity (10).

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