Fresh air type low-temperature regeneration rotating wheel dehumidification constant-temperature and constant-humidity unit

Abstract

The utility model relates to the technical field of fresh air type air conditioning units, and particularly discloses a fresh air type low-temperature regeneration rotating wheel dehumidification constant-temperature and constant-humidity unit which comprises a first box body and a second box body, the first box body serves as the air inlet side of the unit, the second box body serves as the air supply side of the unit, and a partition plate is arranged in the middle of the second box body. A first-stage pre-cooling coil and a second-stage pre-cooling coil are installed on the lower portion of the partition plate of the second box body, an air supply outlet is formed in the lower portion of the partition plate of the second box body, and a heat recovery plate heat exchanger and an exhaust outlet are installed on the upper portion of the partition plate of the second box body; according to the utility model, treated fresh air and regenerated fresh air are supplied and filtered in a centralized manner; the unit is simpler in structure and more convenient to use and maintain; the advantage of high energy efficiency of an external concentrated cold source can be utilized, the built-in independent direct expansion cold source can be utilized to realize lower-dew-point and more sufficient pre-cooling dehumidification, and meanwhile, condensation heat dissipation of the built-in direct expansion cold source can be directly utilized as a regeneration air heating heat source of the low-temperature regeneration rotating wheel on site, so that the optimal comprehensive energy efficiency is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of fresh air type air conditioning units, in particular to a fresh air type low temperature regeneration rotary dehumidification constant temperature and humidity unit. Background Art

[0002] In addition to regulating air temperature, constant temperature and humidity air conditioning units also have functions such as humidity regulation and dust removal. Compared with ordinary air conditioners, constant temperature and humidity precision air conditioners require continuous operation all year round, so their reliability is very high. There are many options for the air supply system of constant temperature and humidity machines. The standard constant temperature and humidity machine uses a medium-efficiency filter device to clean the indoor air. According to customer needs, sub-high-efficiency air filters can be selected.

[0003] The existing constant temperature and humidity air-conditioning units have no external centralized cooling source and only use built-in direct expansion cooling sources. They have low energy efficiency and high energy consumption when running for a long time.

[0004] Therefore, it is necessary to design a fresh air type low-temperature regenerative rotary dehumidification constant temperature and humidity unit to solve the problems of low energy efficiency and high energy consumption of conventional constant temperature and humidity air-conditioning units. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a fresh air type low-temperature regeneration rotary dehumidification constant temperature and humidity unit.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a fresh air type low-temperature regenerative rotary dehumidification constant temperature and humidity unit, comprising a box body one and a box body two, wherein the box body one is the air inlet side of the unit, and the box body two is the air supply side of the unit, a partition is provided in the middle of the box body two, a primary precooling coil and a secondary precooling coil are installed at the lower part of the partition of the box body two, an air supply port is provided at the lower part of the partition of the box body two, a heat recovery plate heat exchanger is installed at the upper part of the partition of the box body two, and an exhaust port is provided at the upper part of the partition of the box body two.

[0007] Specifically, an air inlet is arranged at the upper part of the box body 1, a fan 1 is installed inside the box body 1, and a filter is arranged at the front part of the fan 1.

[0008] Specifically, the rear portion of the fan 1 is connected to the upper and lower areas of the partition of the box body 2.

[0009] Specifically, a dehumidification wheel is installed in the second box body, the upper part of the dehumidification wheel is located on the upper part of the partition, the lower part of the dehumidification wheel is located on the lower part of the partition, an auxiliary evaporation coil is installed behind the lower part of the dehumidification wheel, and an air supply port is installed behind the auxiliary evaporation coil.

[0010] Specifically, a vent is provided on the second box body and above the partition, and the heat recovery plate heat exchanger includes inlet one, outlet one, inlet two and outlet two, inlet one is connected to outlet one, and inlet two is connected to outlet two.

[0011] Specifically, the rear of the vent is connected to inlet one, fan two is installed behind outlet one, a condensing heat dissipation coil is installed behind fan two, a dehumidifying wheel is located behind the condensing heat dissipation coil, and the rear of the dehumidifying wheel is connected to inlet two.

[0012] Specifically, the rear portion of the second outlet is connected to the exhaust port.

[0013] The utility model has the following beneficial effects:

[0014] The utility model designs a fresh air type low temperature regeneration rotary dehumidification constant temperature and humidity unit to process the centralized supply and centralized filtration of fresh air and regeneration fresh air, making the unit structure simpler and more convenient to use and maintain.

[0015] The fresh air type low-temperature regenerative rotary dehumidification constant temperature and humidity unit designed by the utility model adopts a two-stage pre-cooling and dehumidification measure of an external centralized cold source and a built-in independent direct expansion cold source, and adopts the condensation heat dissipation coil of the built-in direct expansion cold source as the regeneration air heating heat source of the low-temperature regeneration rotary wheel. It can not only utilize the high energy efficiency advantage of the external centralized cold source, but also utilize the built-in independent direct expansion cold source to achieve lower dew point and more sufficient pre-cooling and dehumidification. At the same time, it can also directly utilize the condensation heat dissipation of the built-in direct expansion cold source as the regeneration air heating heat source of the low-temperature regeneration rotary wheel on site, thereby achieving the best comprehensive energy efficiency.

[0016] The fresh air type low-temperature regeneration rotary dehumidification constant temperature and humidity unit designed by the utility model adopts a heat recovery plate heat exchanger, which can recover the heat in the exhaust air of the regeneration air to preheat the regeneration air, thereby reducing the demand for heating the regeneration air and achieving energy saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of a fresh air type low-temperature regenerative rotary dehumidification constant temperature and humidity unit.

[0018] In the figure: 1-air inlet; 2-filter; 3-fan 1; 4-primary pre-cooling coil; 5-secondary pre-cooling coil; 6-dehumidification wheel; 7-auxiliary evaporation coil; 8-air supply port; 9-condensation heat dissipation coil; 10-heat recovery plate heat exchanger; 11-vent; 12-inlet 1; 13-outlet 1; 14-inlet 2; 15-outlet 2; 16-fan 2; 17-exhaust port. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely further describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1:

[0021] like Figure 1 As shown, a fresh air type low-temperature regenerative rotary dehumidification constant temperature and humidity unit includes a box body 1 and a box body 2. The box body 1 is located on the left side of the box body 2. The box body 1 is the air inlet side of the unit. The upper part of the box body 1 is provided with an air inlet 1. A fan 3 is installed inside the box body 1. The fan 3 is an air supply fan. A filter 2 is arranged in front of the fan 3.

[0022] Box body 2 is the air supply side of the unit. A horizontal partition is provided in the middle of box body 2. A primary precooling coil 4 and a secondary precooling coil 5 are installed at the lower part of the partition of box body 2. The primary precooling coil 4 adopts an external centralized cold source, such as high-temperature chilled water with a supply and return water temperature of 12 / 18°C; the secondary precooling coil 5 adopts a built-in independent direct expansion cold source.

[0023] An air supply port 8 is provided at the lower part of the partition of the second box body, a heat recovery plate heat exchanger 10 is installed at the upper part of the partition of the second box body, and an air exhaust port 17 is provided at the upper part of the partition of the second box body.

[0024] The rear part of the fan 1 3 is connected to the upper and lower areas of the partition of the box body 2.

[0025] A dehumidification wheel 6 is installed in the second box body, the upper part of the dehumidification wheel 6 is located on the upper part of the partition, the lower part of the dehumidification wheel 6 is located on the lower part of the partition, an auxiliary evaporation coil 7 is installed behind the lower part of the dehumidification wheel 6, and an air outlet 8 is installed behind the auxiliary evaporation coil 7.

[0026] A vent 11 is provided on the second box body and above the partition.

[0027] The heat recovery plate heat exchanger 10 includes an inlet 12 , an outlet 13 , an inlet 2 14 and an outlet 2 15 . The inlet 12 is connected to the outlet 13 , and the inlet 2 14 is connected to the outlet 2 15 .

[0028] The rear of the vent 11 is connected to the inlet 12, and the rear of the outlet 13 is installed with the fan 16, which is a regeneration fan. The rear of the fan 16 is installed with the condensation heat dissipation coil 9, and the rear of the condensation heat dissipation coil 9 is the dehumidification wheel 6, and the rear of the dehumidification wheel 6 is connected to the inlet 14. The rear of the outlet 15 is connected to the exhaust port 17.

[0029] Both fan 1 3 and fan 2 16 use EC fans, which can adjust the air volume steplessly to meet the requirements of variable air volume.

[0030] Embodiment 2: The specific working principle of the fresh air type low temperature regeneration rotary dehumidification constant temperature and humidity unit adopting the structural form of embodiment 1.

[0031] The utility model is characterized in that the fresh air and the regenerated fresh air are centrally supplied and filtered, making the unit structure simpler and more convenient to use and maintain; if the pressure of the air supply fan (fan 1 3) is sufficient to overcome the resistance of the regenerated air channel, the regenerated fan (fan 2 16) can be saved. There is no need to install the regenerated air connection duct on site, making the installation more convenient.

[0032] The utility model is characterized in that it adopts a two-stage pre-cooling and dehumidification measure of a primary pre-cooling coil 4 of an external centralized cold source (such as high-temperature chilled water with a supply and return water temperature of 12 / 18°C) and a secondary pre-cooling evaporating coil of an internal independent direct expansion cold source, and adopts a condensing heat dissipation coil 9 of the internal direct expansion cold source as a regeneration air heating heat source for a low-temperature regeneration wheel. Its advantages are that it can not only utilize the advantages of high energy efficiency of an external centralized cold source, but also utilize the internal independent direct expansion cold source to achieve a lower dew point and more sufficient pre-cooling and dehumidification, and at the same time, it can also directly utilize the condensing heat dissipation of the internal direct expansion cold source as a regeneration air heating heat source for a low-temperature regeneration wheel, thereby achieving the best comprehensive energy efficiency.

[0033] The utility model is characterized in that a heat recovery plate heat exchanger 10 is used in the regeneration air process, which can recover the heat in the exhaust of the regeneration air to preheat the regeneration air, thereby reducing the demand for heating of the regeneration air and achieving energy saving effect.

[0034] The utility model is characterized in that an auxiliary evaporator coil 7 equipped with a speed-adjustable fan is arranged on the air outlet side of the wheel processing air, which constitutes a complete built-in independent direct expansion refrigeration system with the secondary pre-cooling evaporator coil 4, the condensing heat dissipation coil 9 and other refrigeration accessories. The air supply temperature of the processed air can be accurately regulated by adjusting the fan speed, or when the inlet air temperature is low in the transition season and the heat absorbed by the secondary pre-cooling evaporator coil 4 is insufficient to supply the regeneration heating demand of the condensing heat dissipation coil 9 alone, the required heat can be auxiliary absorbed.

[0035] The present utility model is not limited to the above-mentioned implementation modes, and anyone should be aware of the structural changes made under the inspiration of the present utility model. Any technical solutions that are the same or similar to the present utility model fall within the protection scope of the present utility model.

[0036] The technology, shape and structure parts not described in detail in the present invention are all known technologies.

Claims

1. A fresh air type low temperature regeneration rotary dehumidification constant temperature and humidity unit, characterized in that: It includes box body 1 and box body 2, wherein box body 1 is the air inlet side of the unit, box body 2 is the air supply side of the unit, a partition is provided in the middle of box body 2, a primary precooling coil and a secondary precooling coil are installed at the lower part of the partition of box body 2, an air supply port is provided at the lower part of the partition of box body 2, a heat recovery plate heat exchanger is installed at the upper part of the partition of box body 2, and an exhaust port is provided at the upper part of the partition of box body 2; An air inlet is arranged at the upper part of the box body 1, a fan 1 is installed inside the box body 1, and a filter is arranged at the front of the fan 1; A vent is provided on the box body 2 and above the partition. The heat recovery plate heat exchanger includes inlet 1, outlet 1, inlet 2 and outlet 2. Inlet 1 is connected to outlet 1, and inlet 2 is connected to outlet 2. The rear of the vent is connected to inlet 1, fan 2 is installed at the rear of outlet 1, and a condensing heat dissipation coil is installed at the rear of fan 2. The rear of the condensing heat dissipation coil is a dehumidification wheel, and the rear of the dehumidification wheel is connected to inlet 2.

2. The fresh air type low temperature regeneration rotary dehumidification constant temperature and humidity unit according to claim 1 is characterized in that: The rear portion of the fan 1 is connected to the upper and lower areas of the partition of the box body 2.

3. The fresh air type low temperature regeneration rotary dehumidification constant temperature and humidity unit according to claim 1 is characterized in that: A dehumidification wheel is installed in the second box body, the upper part of the dehumidification wheel is located on the upper part of the partition, the lower part of the dehumidification wheel is located on the lower part of the partition, an auxiliary evaporation coil is installed behind the lower part of the dehumidification wheel, and an air supply port is installed behind the auxiliary evaporation coil.

4. The fresh air type low temperature regeneration rotary dehumidification constant temperature and humidity unit according to claim 1 is characterized in that: The rear portion of the second outlet is connected to the exhaust port.

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