De-icing equipment, heat exchangers and compressors

Abstract

The present invention provides a deicing device, a heat exchanger and a compressor, which relates to the technical field of compressors and solves the technical problem that condensation and ice formation in a water receiving tray can easily damage the heat exchanger. The deicing device includes a first deicing component and a second deicing component. The first deicing component is arranged at a position to be deiced, and can make the ice detach from the position to be deiced to a free state; the second deicing component is movably arranged at the position to be deiced, and can remove the ice in a free state from the position to be deiced; the first deicing component includes a resonant piezoelectric sheet and a power supply device, and the power supply device is electrically connected to the resonant piezoelectric sheet; the second deicing component includes a deicing brush and a driving device connected to the deicing brush in a transmission manner, and the driving device can drive the deicing brush to move back and forth at the position to be deiced. The present invention can remove and remove the ice on the water receiving tray of the heat exchanger, solve the problem of ice formation when the heat exchanger is operating in cold areas, and ensure the stability of the heat exchange performance of the unit when operating in cold areas.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a deicing device, a heat exchanger and a compressor. Background Art

[0002] In recent years, with the promotion of the coal-to-electricity policy, the advantages of air-cooled screw units in cooling capacity and breakthroughs in low-temperature technology have made their operation in low-temperature conditions in the north more and more comfortable. The ultra-low-temperature air-cooled screw represented by the "single-machine two-stage" technology can not only adapt to lower temperature environments, but also have better adaptability for medium and large-scale centralized heating projects compared to modular machine products, with a small footprint, stable and reliable, and higher efficiency.

[0003] The fin heat exchanger is the core component of the unit. When the unit is heating, the heat exchanger absorbs the heat from the nearby air, forming a large amount of condensation water on the surface, which flows into the water receiving tray and is discharged.

[0004] The applicant has found that the prior art has at least the following technical problems:

[0005] When operating under low temperature conditions in the north, the condensed water in the water tray freezes and cannot be discharged, which causes the ice chain to extend to the fins, damaging the fins and having a significant impact on their heat transfer performance. Summary of the invention

[0006] The object of the present invention is to provide a deicing device, a heat exchanger and a compressor to solve the technical problem in the prior art that condensation and ice formation on a water receiving pan easily damage the heat exchanger.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention provides a deicing device, comprising a first deicing component and a second deicing component, wherein the first deicing component is arranged at a position to be deiced, and can separate the ice from the position to be deiced into a free state; the second deicing component is movably arranged at the position to be deiced, and can remove the ice in a free state from the position to be deiced.

[0009] As a further improvement of the present invention, the first deicing component includes a resonant piezoelectric sheet and a power supply device, and the power supply device is electrically connected to the resonant piezoelectric sheet.

[0010] As a further improvement of the present invention, the number of the resonant piezoelectric sheet is at least one, and the lengths and / or thicknesses of all the resonant piezoelectric sheets are the same or different.

[0011] As a further improvement of the present invention, the input signal frequency of the power supply device is adjustable.

[0012] As a further improvement of the present invention, the input signal frequency of the power supply device is 900-5000HZ.

[0013] As a further improvement of the present invention, the second deicing assembly includes a deicing brush and a driving device drivingly connected to the deicing brush, and the driving device can drive the deicing brush to move back and forth at the position to be deiced.

[0014] As a further improvement of the present invention, the driving device includes a power source and a transmission member, the power source is transmission-connected to the transmission member, and the de-icing brush is rigidly connected to the transmission member.

[0015] As a further improvement of the present invention, the power source is a motor and a transmission axle, the motor is in transmission connection with the transmission axle, and the transmission member is a conveyor belt, a conveyor chain or a crawler track mounted on the transmission axle.

[0016] As a further improvement of the present invention, the de-icing brush is a hard brush.

[0017] As a further improvement of the present invention, the deicing device further includes a temperature sensor and a controller, and the temperature sensor, the first deicing component and the second deicing component are all electrically connected to the controller.

[0018] The present invention provides a heat exchanger, comprising a water receiving tray and the deicing device, wherein the first deicing component is arranged on the outer side wall of the water receiving tray, and the second deicing component is arranged in the water receiving cavity of the water receiving tray.

[0019] The present invention provides a compressor, comprising the heat exchanger.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The deicing device provided by the present invention can remove and remove ice on the water receiving tray of the heat exchanger, thereby solving the problem of ice formation when the heat exchanger is operating in cold areas and ensuring the stability of the heat exchange performance of the unit when operating in cold areas; in a further improvement scheme of the present invention, by arranging a resonant piezoelectric sheet, not only can the ice be shaken off the water receiving tray, but the condensed water on the water receiving tray can also be vibrated into a flowing water flow to prevent the water receiving tray from freezing. Compared with the thermal deicing method, this deicing method has the characteristic of low energy consumption, and the energy consumption is about one sixtieth of that of electric heating deicing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the heat exchanger of the present invention;

[0024] Figure 2 is a front view of the heat exchanger of the present invention;

[0025] Figure 3 1 is a top view of the heat exchanger of the present invention

[0026] Figure 4 is a side view of the heat exchanger of the present invention;

[0027] Figure 5 It is a three-dimensional structural schematic diagram of the deicing device of the present invention installed on the water receiving tray of the heat exchanger;

[0028] Figure 6 is a top view of the deicing device of the present invention installed on the water receiving tray of the heat exchanger;

[0029] Figure 7 is a side view of the deicing device of the present invention installed on the water receiving tray of the heat exchanger;

[0030] Figure 8 is a front view of the deicing device of the present invention installed on the water receiving tray of the heat exchanger;

[0031] Fig. 9 It is a schematic diagram of the three-dimensional structure of the deicing brush in the deicing device of the present invention.

[0032] In the figure, 1 is a first deicing assembly; 2 is a second deicing assembly; 21 is a deicing brush; 22 is a driving device; 221 is a driving wheel shaft; 222 is a conveyor belt; 100 is a heat exchanger; and 200 is a water receiving tray. DETAILED DESCRIPTION

[0033] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0034] like Figure 5As shown, the present invention provides a deicing device, including a first deicing component 1 and a second deicing component 2. The first deicing component 1 is arranged at a position to be deiced, and can make the ice detach from the position to be deiced to a free state; the second deicing component 2 is movably arranged at the position to be deiced, and can remove the ice in a free state from the position to be deiced.

[0035] like Figure 6 As shown, specifically, in one embodiment of the present invention, the position to be de-iced is the water receiving tray 200 of the heat exchanger 100. The second de-icing assembly 2 moves in the water receiving tray 200 to remove the detached ice or unfrozen condensed water from the water receiving tray 200. The first de-icing assembly 1 can remove the ice on the water receiving tray 200, or make the unfrozen condensed water flow.

[0036] The deicing device provided by the present invention can remove ice on the water receiving tray 200 of the heat exchanger, thereby solving the problem of ice formation when the heat exchanger is operated in cold areas and ensuring the stability of the heat exchange performance of the unit when operating in cold areas.

[0037] like Figure 1 , Figure 2 and Figure 8 As shown, as an optional embodiment, the first deicing assembly 1 includes a resonant piezoelectric sheet and a power supply device, and the power supply device is electrically connected to the resonant piezoelectric sheet. The power supply device can provide an input signal to the resonant piezoelectric sheet to make the resonant piezoelectric sheet vibrate and drive the water receiving tray 200 to follow the vibration.

[0038] Further, the number of the resonant piezoelectric sheets is at least one, and the lengths and / or thicknesses of all the resonant piezoelectric sheets are the same or different. It should be noted that in the present invention, the resonant piezoelectric sheets are arranged on the bottom wall and the two side walls of the water receiving tray 200. The specifications of the resonant piezoelectric sheets are selected and used according to the specifications of the water receiving tray 200.

[0039] It should be noted that the input signal frequency of the power supply device is adjustable. By adjusting the input signal frequency, the vibration frequency of the resonant piezoelectric sheet can be changed to be suitable for use in different working conditions or environments.

[0040] After many tests, the input signal frequency of the power supply device is 900-5000HZ, among which the optimal signal frequency is 5000HZ.

[0041] like Figure 7 and Fig. 9As shown, as an optional embodiment, the second de-icing assembly 2 includes a de-icing brush 21 and a driving device 22 that is transmission-connected to the de-icing brush 21, and the driving device 22 can drive the de-icing brush 21 to reciprocate at the position to be de-iced. It should be noted that the specifications of the de-icing brush 21 are compatible with the specifications of the water receiving tray 200. The water receiving tray 200 is a symmetrical structure with U-shaped water receiving grooves on both sides. The de-icing brush 21 is movably arranged in the water receiving groove and can reciprocate along the length direction of the water receiving groove. In order to ensure the de-icing effect, the bottom of the de-icing brush 21 is in contact with the bottom of the water receiving groove, or has a small gap. The de-icing brush 21 includes a support block, a metal clamp and bristles. The bristles are connected to the support block through the metal clamp, and the support block is rigidly connected to the conveyor belt 222.

[0042] As an optional implementation, the driving device includes a power source and a transmission member, the power source is transmission-connected to the transmission member, and the de-icing brush 21 is rigidly connected to the transmission member.

[0043] The power source is a motor and a transmission axle 221. The motor is connected to the transmission axle 221 by transmission. The transmission member is a conveyor belt 222, a transmission chain or a crawler track sleeved on the transmission axle 221. As shown in the figure, the transmission axle 221 includes two, namely, an active transmission axle 221 and a passive transmission axle 221. The output shaft of the motor is connected to the active transmission axle 221. The two transmission axles 221 are respectively fixed outside the two ends of the water receiving tray 200. There is a gap between the transmission axle 221 and the end of the water receiving tray 200 for ice or water to fall from the gap.

[0044] Since ice has a certain hardness, in the present invention, the de-icing brush 21 is a hard brush. The de-icing brush 21 is rigidly connected to the conveyor belt 222, and when the conveyor belt 222 moves, the de-icing brush 21 will be driven to move together.

[0045] As an optional embodiment, the deicing device further includes a temperature sensor and a controller, and the temperature sensor, the first deicing component 1, and the second deicing component 2 are all electrically connected to the controller. Specifically, a temperature sensor is provided on the heat exchanger to measure the ambient temperature and transmit the temperature to the controller. Once the ambient temperature is lower than 0°, the controller controls the deicing device to start, the first deicing component 1 starts to vibrate to remove the ice, and the second deicing component 2 starts to move to remove the removed ice.

[0046] like Figure 1-Figure 4 As shown, a heat exchanger provided by the present invention includes a water receiving tray 200 and a deicing device, wherein a first deicing component 1 is arranged on the outer wall of the water receiving tray 200 , and a second deicing component 2 is arranged in the water receiving cavity of the water receiving tray 200 .

[0047] In the present invention, the power source is a motor, which can of course be replaced by other power sources, such as a telescopic cylinder, etc., or the built-in power of the compressor can be used to remove ice without stopping the compressor unit during operation.

[0048] By controlling the vibration frequency of the resonant piezoelectric sheet, the water receiving tray 200 is stimulated to resonate, so that the ice cubes are separated from the water receiving tray 200 and finally swept away by the reciprocating de-icing brush 21.

[0049] The assembly process of the deicing device of the present invention is as follows:

[0050] First, install the resonant piezoelectric sheet at the bottom and both sides of the outside of the water receiving tray 200; then assemble the hard brush onto the conveyor belt 222. Note that the initial installation position of the hard brush should be installed at the end of the water receiving tray 200; finally, put the conveyor belt 222 onto the transmission axle 221, and connect the transmission axle 221 to the power source.

[0051] When the temperature sensor on the unit senses that the ambient temperature is lower than 0°, the de-icing device starts to work. The resonant piezoelectric piece receives the signal and starts to vibrate, which stimulates the water tray 200 to resonate, so that ice cubes cannot adhere to the water tray 200. Because the conveyor belt 222 is rigidly connected to the brush, when power is input to the drive shaft 221, the conveyor belt 222 pushes the hard brush to move along the water tray 200, and the accumulated water and ice cubes in the water tray 200 are removed in time. When the brush completes a stroke and reaches the other end of the water tray 200, the opposite power source is input, and it can return along the original path to sweep away the newly flowing spray water.

[0052] The present invention provides a compressor, comprising the above-mentioned heat exchanger.

[0053] In a further improvement of the present invention, by setting a resonant piezoelectric chip, not only can the ice be shaken off the water receiving tray, but the condensed water on the water receiving tray can also be vibrated into a flowing water stream to prevent the water receiving tray from freezing. This deicing method has the characteristic of low energy consumption compared to thermal deicing methods, and the energy consumption is about one sixtieth of that of electric heating deicing.

[0054] First of all, it should be explained here that “inward” refers to the direction toward the center of the accommodating space, and “outward” refers to the direction away from the center of the accommodating space.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A heat exchanger, characterized in that: The invention comprises a water receiving tray and an ice removal device, wherein the ice removal device comprises a first ice removal component and a second ice removal component, wherein the first ice removal component is arranged at a position to be deiced, and can make ice from the position to be deiced be separated into a free state; the second ice removal component is movably arranged at the position to be deiced, and can make ice in a free state be removed from the position to be deiced; The first deicing assembly includes a resonant piezoelectric sheet and a power supply device, wherein the power supply device is electrically connected to the resonant piezoelectric sheet; The second deicing assembly includes a deicing brush and a driving device connected to the deicing brush, and the driving device can drive the deicing brush to move back and forth at the position to be deiced; The first deicing assembly is arranged on the outer side wall of the water receiving tray, and the second deicing assembly is arranged in the water receiving cavity of the water receiving tray.

2. The heat exchanger according to claim 1, characterized in that: The number of the resonant piezoelectric sheet is at least one, and the lengths and / or thicknesses of all the resonant piezoelectric sheets are the same or different.

3. The heat exchanger according to claim 1, characterized in that: The input signal frequency of the power supply device is adjustable.

4. The heat exchanger according to claim 3, characterized in that The input signal frequency of the power supply device is 900-5000HZ.

5. The heat exchanger according to claim 1, characterized in that: The de-icing brush is a hard brush.

6. The heat exchanger according to claim 1, characterized in that The deicing device further includes a temperature sensor and a controller. The temperature sensor, the first deicing assembly and the second deicing assembly are all electrically connected to the controller.

7. A compressor, characterized in that: Comprising a heat exchanger as described in any one of claims 1-6.

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