Constant humidity machine for machine room

Abstract

The utility model discloses a constant humidity machine for a machine room. The constant humidity machine comprises a rack, a partition plate, a first dehumidification film, a second dehumidification film, a moving device, a heat exchanger, an axial flow fan, an evaporator, a condenser and an air supply fan. According to the utility model, adsorption dehumidification and dew-point dehumidification are combined, so that the moisture content of air entering the evaporator is greatly reduced, the dew-point dehumidification amount is small, the evaporation temperature does not need to be excessively reduced, and the frosting problem of the evaporator is radically solved; most excessive moisture is removed through adsorption dehumidification, dew point dehumidification is adjusted in a frequency conversion mode, and compared with a single dehumidification mode, dehumidification is rapid, control is accurate, and energy saving and high efficiency are achieved. The first dehumidification film and the second dehumidification film are designed to be backup for each other, the dehumidification films are reused, a part of the condenser is separated to serve as a heat exchanger, moisture volatilization of the dehumidification films is accelerated, and the moisture absorption capacity can be rapidly recovered; a dehumidification channel is arranged, moisture is directly discharged out of a room, and the situation that the moisture absorption effect is affected due to the fact that vapor in the moisture absorption film volatilizes and then enters the room is avoided.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration and air conditioning technology, and in particular to a computer room constant humidity machine. Background Technology

[0002] With data center energy consumption increasing year by year, effectively reducing power usage effectiveness (PUE) in data centers has become a pressing issue. Air conditioning, as the largest consumer of electrical equipment in data centers besides IT consumables, has naturally become a key focus of research for many scientists. High-performance, high-reliability, and highly intelligent data center air conditioning equipment has emerged to address this need.

[0003] Compared to ordinary air conditioning equipment, high temperature and humidity accuracy is a significant characteristic of computer room air conditioning. Constant humidity units are commonly used humidity control devices in computer rooms, effectively humidifying and dehumidifying to meet varying humidity requirements. Common humidification methods include directly humidifying the air with liquid water spray or atomizing water into water vapor and small droplets. Common humidification equipment includes spray pipe humidifiers, wet film humidifiers, infrared humidifiers, and electrode humidifiers. Common dehumidification methods include solid-liquid adsorption dehumidification and mechanical dew point dehumidification. Due to its high efficiency and continuous operation, mechanical dew point dehumidification is widely used in the market, and constant humidity units are currently the most commonly used in computer room air conditioning. The main working principle of a constant humidity unit is to lower the evaporation temperature below the current dew point temperature of the air in the computer room, causing water vapor in the air to condense and be expelled, thus reducing air humidity. Dehumidification efficiency is closely related to evaporation temperature. Under otherwise similar conditions, the lower the evaporation temperature, the higher the dehumidification efficiency. However, continuously lowering the evaporation temperature can lead to many problems, such as increased compressor energy consumption, evaporator frost causing excessively low pressure, and equipment shutdown for protection purposes.

[0004] Therefore, it is necessary to develop a constant humidity system for computer rooms to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to design a computer room constant humidity machine to solve the above problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A computer room humidity control unit, comprising:

[0008] The rack; the rack has internal storage space;

[0009] The partition is horizontally installed inside the frame and divides the storage space into an upper storage space and a lower storage space. A first outlet is provided above the upper storage space; a second outlet is provided below the lower storage space; and an air inlet is provided at the first end of the lower storage space.

[0010] First dehumidifying membrane;

[0011] Second dehumidifying membrane;

[0012] Two moving devices are used to move the first dehumidifying membrane and the second dehumidifying membrane up and down respectively; two through holes are vertically opened in the middle of the partition for the first dehumidifying membrane and the second dehumidifying membrane to move up and down respectively; the two moving devices are arranged side by side;

[0013] Heat exchanger;

[0014] Axial flow fan; both the heat exchanger and the axial flow fan are installed in the upper storage space; when the first dehumidification membrane and the second dehumidification membrane are moved to the upper storage space, they are placed between the heat exchanger and the axial flow fan;

[0015] Evaporator;

[0016] Condenser; heat exchanger is connected to the condenser outlet pipe via a dehumidification and reheat pipe;

[0017] The air supply fan; the evaporator, condenser and air supply fan are all placed in the lower storage space; when the first dehumidifying membrane and the second dehumidifying membrane move down to the lower storage space, air enters from the air inlet, and then the air flows out from the second outlet after passing through the first dehumidifying membrane, the second dehumidifying membrane, the evaporator and the condenser in sequence.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. Combining adsorption dehumidification with dew point dehumidification greatly reduces the moisture content of the air entering the evaporator. At this time, the dew point dehumidification amount is small, and the evaporation temperature does not need to be lowered too much, thus solving the frosting problem of the evaporator at its root.

[0020] 2. Adsorption dehumidification removes most of the excess moisture, and dew point dehumidification with frequency conversion adjustment is faster, more precise, and more energy-efficient than single dehumidification methods.

[0021] 3. The first and second dehumidification membranes are designed as backups for each other. The dehumidification membranes are reused, and a portion of the condenser is used as a heat exchanger to accelerate the evaporation of moisture from the dehumidification membranes and quickly restore their moisture absorption capacity.

[0022] 4. Equipped with a dehumidification channel, moisture is directly discharged into the room, avoiding the water vapor in the moisture-absorbing membrane from evaporating and then entering the room, which would affect the dehumidification effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this application;

[0024] Figure 2 This is a schematic diagram of the installation structure of the first dehumidification membrane and the second dehumidification membrane in this application;

[0025] Figure 3 This is a schematic diagram of the guide rail structure in this utility model;

[0026] Figure 4 for Figure 3 Enlarged schematic diagram of some of the structures.

[0027] The main corresponding reference numerals in the attached figures are as follows:

[0028] In the diagram: 1. Frame; 2. Partition; 3. Heat exchanger; 4. First dehumidification membrane; 5. Axial flow fan; 6. Dehumidification channel; 7. Moving device; 71. Motor; 72. Gear; 73. Gear plate; 74. Connecting plate; 75. Guide rail; 76. Slide groove; 77. Connecting groove; 78. Weight sensor; 8. Second dehumidification membrane; 9. Evaporator; 10. Condenser; 11. Air supply fan. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component 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.

[0033] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0036] like Figure 1-4 As shown, a computer room humidity control unit includes:

[0037] Rack 1; Rack 1 has storage space inside;

[0038] Partition 2; Partition 2 is horizontally installed inside the frame 1 and divides the storage space into an upper storage space and a lower storage space; a first outlet is provided above the upper storage space; a second outlet is provided below the lower storage space; and an air inlet is provided at the first end of the lower storage space.

[0039] First dehumidifying membrane 4;

[0040] Second dehumidifying membrane 8;

[0041] Two moving devices 7 are used to move the first dehumidifying membrane 4 and the second dehumidifying membrane 8 up and down respectively; two through holes are vertically opened in the middle of the partition plate 2 for the first dehumidifying membrane 4 and the second dehumidifying membrane 8 to move up and down respectively; the two moving devices 7 are arranged side by side;

[0042] Heat exchanger 3;

[0043] Axial flow fan 5; heat exchanger 3 and axial flow fan 5 are both installed in the upper storage space; when the first dehumidification membrane 4 and the second dehumidification membrane 8 are moved to the upper storage space, they are placed between the heat exchanger 3 and the axial flow fan 5; the axial flow fan 5 is placed below the first outlet, the air outlet of the axial flow fan 5 is aligned with the first outlet, and the heat exchanger 3 is placed on one side of the axial flow fan 5.

[0044] Evaporator 9;

[0045] Condenser 10; Heat exchanger 3 is connected to the liquid outlet pipe of condenser 10 through a dehumidification reheat pipe, which is used to accelerate the evaporation of moisture from the saturated dehumidification membrane and can effectively reduce the condensation temperature of the third heat exchanger 3.

[0046] The air supply fan 11; the evaporator 9, condenser 10, and air supply fan 11 are all placed in the lower storage space; when the first dehumidifying membrane 4 and the second dehumidifying membrane 8 move down to the lower storage space, air enters from the air inlet, and then the air flows out from the second outlet after passing through the first dehumidifying membrane 4, the second dehumidifying membrane 8, the evaporator 9, and the condenser 10 in sequence; the air supply fan 11 is placed above the second outlet, and the air outlet of the air supply fan 11 is aligned with the second outlet, and the evaporator 9 and the condenser 10 are placed above the air supply fan 11;

[0047] Two weight sensors 78 are installed in the lower storage space at the lowest position of the first dehumidification membrane 4 and the second dehumidification membrane 8. The weight sensors 78 are installed on the inner wall of the frame 1.

[0048] The mobile device 7 includes a motor 71, a gear 72, a toothed plate 73, a guide rail 75, and a connecting plate 74. The motor 71 and the guide rail 75 are fixedly mounted on the frame 1. The guide rail 75 is vertically mounted. The shaft of the motor 71 is connected to the gear 72, and the gear 72 meshes with the toothed plate 73. The guide rail 75 is provided with a sliding groove 76, and a connecting groove 77 is formed in the middle of the sliding groove 76. The back of the toothed plate 73 slides vertically within the sliding groove 76 of the guide rail 75. The connecting plate 74 is vertically slidable within the connecting groove 77. The two sides of the connecting plate 74 are respectively connected to the back of the toothed plate 73 and the first dehumidifying membrane 4 or the second dehumidifying membrane 8. A magnetic shielding agent coating is applied to the inside of the guide rail 75 of the mobile device 7 to prevent the magnetic fields within the two guide rails 75 from interfering with each other. The sliding groove 76 also serves to laterally limit the toothed plate 73, and the connecting groove 77 serves to laterally limit the connecting plate 74. When the mobile device 7 is working, the motor 71 is working, the motor 71 drives the gear 72 to rotate, the gear 72 drives the toothed plate 73 to move up and down, and the toothed plate 73 drives the dehumidification membrane to move up and down through the connecting plate 74.

[0049] The partition 2 has two parallel through holes for the first dehumidifying membrane 4 or the second dehumidifying membrane 8 to move up and down. These through holes can be sealed by an elastic flap after the first dehumidifying membrane 4 or the second dehumidifying membrane 8 has passed through, thus improving airtightness. Alternatively, the length of the first dehumidifying membrane 4 or the second dehumidifying membrane 8 can be designed such that when the first dehumidifying membrane 4 or the second dehumidifying membrane 8 reaches the working position in the upper or lower storage space, a portion of the first dehumidifying membrane 4 or the second dehumidifying membrane 8 still essentially blocks the through holes, thus eliminating the need for the elastic flap.

[0050] The technical means of this invention fully utilizes the advantages of adsorption dehumidification and dew point dehumidification. On the one hand, taking advantage of the sustainability of adsorption dehumidification, the supplied air first passes through a dehumidification membrane formed by a solid adsorbent to remove most of the water vapor in the air. Then, the supplied air passes through an evaporator 9 with large-area fins to further ensure the dehumidification effect. At this time, due to the low moisture content, large fin spacing, and relatively high evaporation temperature, the problems of frost formation and low pressure on the evaporator 9 are solved at the root. At the same time, the two dehumidification membranes can be arranged side by side. When the moisture content of one of them reaches a set value, it automatically retreats to the dehydration zone (upper storage space) to quickly remove moisture in a high-temperature, high-flow-rate environment, restoring normal moisture absorption capacity. Then, it moves down again via the moving device 7, and so on.

[0051] The structure of this application can be summarized into two parts: an adsorption dehumidification system and a dew point dehumidification system. The adsorption dehumidification system includes a first dehumidification membrane 4, a second dehumidification membrane 8, a heat exchanger 3, a dehumidification channel 6 (located above the first air outlet), a moving device 7, and a detection device. The first dehumidification membrane 4 and the second dehumidification membrane 8 are composed of adsorbed silica gel particles, exhibiting strong moisture absorption capacity. At high temperatures, the moisture within the silica gel pores evaporates easily. The first dehumidification membrane 4 and the second dehumidification membrane 8 are placed side-by-side in front of the evaporator 9. The heat exchanger 3 is part of the condenser 10 and serves to accelerate the evaporation of moisture from the dehumidification membranes, restoring their moisture absorption capacity. The dehumidification channel 6 is arranged side-by-side with the heat exchanger 3. The moving device 7 is used to move the first dehumidification membrane 4 and the second dehumidification membrane 8 vertically, moving them to either the dehumidification position (within the lower storage space) or the evaporation position (within the upper storage space). The evaporation point is located before the heat exchanger 3 and is connected to the dehumidification channel 6. Moisture on the moisture-absorbing membrane can be discharged through this channel. The dehumidification point is located before the evaporator 9.

[0052] The dew point dehumidification system includes conventional refrigeration system components such as a compressor, evaporator 9, condenser 10, electronic expansion valve, and fan. The dew point dehumidification system can automatically adjust the frequency of the variable frequency compressor, the speed of the fan, and the opening of the electronic expansion valve according to the difference between the set humidity and the current humidity, thereby adjusting the evaporation temperature and air volume, and thus controlling the dehumidification capacity.

[0053] The air moisture content after passing through the dehumidification membrane is already very low, resulting in minimal condensation when it reaches the evaporator 9. Combined with the large-pitch finned heat exchanger 3 (it is recommended that the fin pitch be no less than 2.0 mm while meeting the heat exchange requirements), frost formation is extremely difficult under normal operating conditions, effectively avoiding problems such as low-pressure protection and system alarms.

[0054] The first dehumidifying membrane 4 and the second dehumidifying membrane 8 serve as backups for each other. They are installed in a staggered configuration and each is equipped with a weight sensor 78 to detect its weight. When the weight of the working dehumidifying membrane exceeds a preset weight, it indicates that the absorbed moisture is nearing saturation, the dehumidification capacity has significantly decreased, and the membrane needs to be replaced. The moving device 7, based on signals from the main unit (which receives the detection signals from the weight sensor 78 and then controls the corresponding moving device 7 to move either the first or second dehumidifying membrane 8), moves the idle dehumidifying membrane in the upper storage space to the lower working area. After positioning, the saturated dehumidifying membrane is moved to the upper position for moisture evaporation and dehumidification.

[0055] During operation, if the required dehumidification capacity exceeds the preset range, both dehumidification films can be simultaneously moved to their working positions (within the lower storage space) to accelerate dehumidification. In this case, once either dehumidification film reaches 70% of its set saturation value, it needs to be moved to the dehumidification position to ensure that a solid dehumidification film is always in operation. Furthermore, to reduce air resistance and avoid affecting humidification operations, ensure that the dehumidification film is not in operation before activating the humidification mode.

[0056] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A machine room dehumidifier, characterized by, The utility model relates to a vertical type heat pump dehumidifier, comprising: a rack; a storage space arranged inside the rack; a partition plate; the partition plate is horizontally arranged in the rack and divides the storage space into an upper storage space and a lower storage space; a first outlet is arranged above the upper storage space, a second outlet is arranged below the lower storage space, and an air inlet is arranged at a first end of the lower storage space; a first dehumidifying membrane; a second dehumidifying membrane; two moving devices for moving the first dehumidifying membrane and the second dehumidifying membrane up and down respectively; two through holes for the first dehumidifying membrane and the second dehumidifying membrane to move up and down are vertically arranged in the middle of the partition plate; and the two moving devices are arranged side by side; a heat exchanger; an axial flow fan; the heat exchanger and the axial flow fan are both arranged in the upper storage space; when the first dehumidifying membrane and the second dehumidifying membrane move up to the upper storage space, they are arranged between the heat exchanger and the axial flow fan; an evaporator; a condenser; the heat exchanger is connected to a condenser liquid outlet pipe through a dehumidification reheating pipe; an air supply fan; the evaporator, the condenser, and the air supply fan are all arranged in the lower storage space; when the first dehumidifying membrane and the second dehumidifying membrane move down to the lower storage space, air enters from the air inlet, and then the air successively passes through the first dehumidifying membrane, the second dehumidifying membrane, the evaporator, and the condenser before flowing out from the second outlet.

2. The machine room constant humidity device according to claim 1, wherein The moving device comprises a motor, a gear, a toothed plate, and a guide rail; the motor and the guide rail are fixedly arranged on the rack, the guide rail is vertically arranged, the rotating shaft of the motor is connected to the gear, the gear is engaged with the toothed plate, a sliding groove is arranged on the guide rail, a connecting groove is arranged in the middle of the sliding groove, the back surface of the toothed plate vertically slides in the sliding groove of the guide rail, and the back surface of the toothed plate is connected to the first dehumidifying membrane and the second dehumidifying membrane through the connecting groove.

3. The machine room constant humidity device according to claim 2, wherein The moving device further comprises a connecting plate, the connecting plate is vertically slidably arranged in the connecting groove, and the two sides of the connecting plate are connected to the back surface of the toothed plate and the first dehumidifying membrane or the second dehumidifying membrane respectively.

4. The machine room constant humidity device according to claim 1, wherein Two weight sensors are arranged in the lower storage space and at the lowest descending position of the first dehumidifying membrane and the second dehumidifying membrane.

5. The machine room type constant humidity controller according to claim 1, wherein The axial flow fan is arranged below the first outlet, the air outlet of the axial flow fan is aligned with the first outlet, and the heat exchanger is arranged on one side of the axial flow fan.

6. The computer room constant humidity machine according to claim 1, characterized in that, The air supply fan is arranged above the second outlet, the air outlet of the air supply fan is aligned with the second outlet, and the evaporator and the condenser are arranged above the air supply fan.

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